Spinal surgery devices
Through the intervertebral insertion module, a combination device of fusion prosthesis and guide, the major problems of sedimentation and incision of intervertebral fusion prosthesis are solved, and the spinal fusion effect of spinal balance and small incisions are achieved.
Patent Information
- Application Number
- CN202110725128.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2021-05-26
- Filing Date
- 2021-06-29
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2041-06-29
AI Technical Summary
The intervertebral fusion prosthesis is prone to subsidence during existing spinal fusion surgery, resulting in spinal imbalance, large surgical incisions and difficult to maintain the initial shape, affecting the surgical effect and patient recovery.
Using a combination device of intervertebral insertion module, intervertebral fusion prosthesis and intervertebral guide, the shortened folding structure and "cross" shape design ensures that the intervertebral fusion prosthesis contacts the lateral edge of the spine body, reduces incisions and maintains spinal balance.
Effectively prevent the settlement of intervertebral fusion prosthesis, maintain spinal balance, reduce surgical incisions, improve surgical results and patient recovery quality.
Smart Images
Figure CN115399926B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a spinal surgery apparatus for performing spinal fusion between two adjacent vertebral bodies associated with degenerative spinal disease in a vertebral column through the back of a patient's body. Background Art
[0002] Typically, the spine has a total of 33 vertebrae (hereinafter referred to as vertebral bodies). For example, the cervical spine has 7 vertebral bodies, the thoracic spine has 12 vertebral bodies, the lumbar spine has 5 vertebral bodies, the sacral spine has 5 vertebral bodies, and the coccyx has 4 vertebral bodies. Furthermore, intervertebral discs are located between the cervical, thoracic, and lumbar vertebrae.
[0003] The intervertebral disc is a strong connecting tissue that connects two adjacent vertebrae and supports weight when placed under load. Meanwhile, the spine, the organ that forms the core of the human body, is susceptible to degenerative damage due to improper posture, lifestyle habits, and aging.
[0004] When non-surgical treatments have yielded a poor prognosis, degenerative spinal disease can be treated with surgery known as interbody fusion. This interbody fusion procedure treats the intervertebral disc located between two vertebrae associated with degenerative spinal disease in at least one of the cervical and lumbar spines, promoting direct bone fusion between the two vertebrae.
[0005] To achieve this, intervertebral fusion surgery requires the use of a spinal fusion prosthesis (spinecage) inserted between the two vertebrae and surgical instruments integrated with the prosthesis. The spinal fusion prosthesis acts as an artificial disc, supporting the weight load applied to the spine, restoring the spacing between the vertebrae, and relieving nerve compression, thereby alleviating neurological symptoms.
[0006] However, the above-mentioned intervertebral fusion prosthesis is located in the central area of the vertebral body and contacts the cancellous bone of the vertebral body. Due to the elastic coefficient higher than that of the bone, it causes settlement or has poor bone integration with fibrous tissue due to surface characteristics. Therefore, intervertebral fusion surgery is performed in an unstable surgical environment.
[0007] During spinal intervertebral fusion surgery, the intervertebral fusion prosthesis is located only in the central area of the vertebral bodies between the two vertebrae. Therefore, when the spine is radiographed after the intervertebral fusion surgery, the above-mentioned subsidence phenomenon causes an imbalance of the spine in the left and right and front and back directions of the body when viewed from the sagittal plane and the coronal plane.
[0008] The surgical instrument, along with the intervertebral fusion prosthesis, is inserted through an incision in the patient's back. The instrument passes through the incision and reaches between two vertebrae associated with degenerative spinal damage, whereupon the intervertebral fusion prosthesis is inserted. However, the surgical instrument requires a relatively large incision in the patient's body to access the two vertebrae.
[0009] Furthermore, during the insertion of the intervertebral fusion prosthesis between the two vertebrae, the position of the surgical tool is adjusted in the incision site of the body and the intervertebral fusion prosthesis is rotated on the intervertebral space of the spine by the surgical tool. The surgical tool deforms the incision site of the body into a shape different from its original shape, thereby making spinal fusion surgery difficult and causing a larger surgical wound to the patient.
[0010] On the other hand, the above-mentioned spinal fusion technique is similarly disclosed as a prior art in Korean Patent Publication No. 10-2155089, entitled “Trocar for Spinal Surgery.” Summary of the Invention
[0011] The present invention has been proposed to solve the existing problems. The purpose of the present invention is to provide a spinal surgical device suitable for the following situations, namely, in spinal fusion surgery as a surgical treatment for degenerative spinal diseases, the phenomenon of subsidence of an intervertebral fusion prosthesis on the vertebral body is prevented in advance, when radiographing, the balance of the spine is maintained in the left and right and front and back of the body when observed from the sagittal plane and the coronal plane, during the operation, the patient's body is incised to the minimum extent, and even if surgical tools and an intervertebral fusion prosthesis are inserted into the incised part of the body, the incised part of the body continues to maintain its original shape.
[0012] The spinal surgical device of the present invention performs spinal fusion between two adjacent vertebrae related to degenerative spinal disease in the spine through the back of the patient's body, and is characterized in that it includes: an intervertebral insertion module formed in a shortened (telescope) folding structure; an intervertebral fusion prosthesis combined with the above-mentioned intervertebral insertion module; and an intervertebral guide inserted into the incision site of the patient's body to surround the above-mentioned intervertebral insertion module and the above-mentioned intervertebral fusion prosthesis and introduce the above-mentioned intervertebral insertion module and the above-mentioned intervertebral fusion prosthesis between the two above-mentioned vertebrae. When observed with the spinal cord formed along the length direction of the above-mentioned spine as a reference, the above-mentioned intervertebral fusion prosthesis forms a "cross" shape with the above-mentioned spinal cord between the two above-mentioned vertebrae and contacts the two side edges of the above-mentioned individual vertebrae together with the central area of the individual vertebrae, and the height of the position close to the above-mentioned spinal cord is greater than the height of the position away from the above-mentioned spinal cord.
[0013] The intervertebral insertion module may include a coupling rod, a guide tube and a holding tube that sequentially surround the coupling rod. The coupling rod, the guide tube and the holding tube may form the shortened folding structure.
[0014] The above-mentioned combining rod may include: a threaded portion, which is spirally connected to the above-mentioned intervertebral fusion prosthesis at the front; a sliding portion, which extends horizontally from the above-mentioned threaded portion; and a driver, which is at the rear, extending from the above-mentioned sliding portion toward the opposite side of the above-mentioned threaded portion. The above-mentioned threaded portion and the above-mentioned driver are located around one end and the other end of the above-mentioned guide tube. When the above-mentioned driver moves relative to the above-mentioned other end of the above-mentioned guide tube, the above-mentioned threaded portion can move in and out at one end of the above-mentioned guide tube.
[0015] When the above-mentioned combining rod has a threaded portion, a sliding portion and a driver connected in sequence, the above-mentioned guide tube may include: a sliding portion, which surrounds the above-mentioned threaded portion and the above-mentioned sliding portion in the front and guides the movement of the above-mentioned threaded portion and the above-mentioned sliding portion; a limiting portion, which extends from the above-mentioned sliding portion toward the opposite side of the above-mentioned sliding portion in the rear, surrounds the above-mentioned driver and limits the movement of the above-mentioned driver; and a pressurizing operating portion, which protrudes from the outer peripheral surface of the above-mentioned limiting portion. The length formed by the above-mentioned sliding portion and the above-mentioned limiting portion along the length direction of the above-mentioned intervertebral insertion module may be smaller than the length of the above-mentioned threaded portion, the above-mentioned sliding portion and the above-mentioned driver.
[0016] The sliding portion and the limiting portion can move relative to the holding tube. In the sliding portion, two anti-rotation protrusions are provided on the opposite side of the limiting portion. When the combining rod moves relative to the guide tube, in the sliding portion, the threaded portion moves in and out between the two anti-rotation protrusions. In the limiting portion, a part of the driver is inserted into the interior of the limiting portion to limit the movement of the part of the driver. In the limiting portion, the remaining part of the driver can be exposed to the outside of the limiting portion to allow the remaining part of the driver to move freely.
[0017] When the guide tube has a sliding portion and a limiting portion along a straight line and the threaded portion and the sliding portion of the connecting rod are surrounded in the sliding portion, and the driver of the connecting rod is surrounded in the limiting portion, the holding tube may include: two clamps, which accommodate and clamp the intervertebral fusion prosthesis in the front; and an entry portion, which is integrated with the two clamps at one end at the rear, surrounds a part of the sliding portion and allows the remaining part of the sliding portion to move in and out, and the two clamps and the entry portion can be used together to insert the intervertebral fusion prosthesis into the intervertebral guide.
[0018] Since the driver performs relative rotational motion with respect to the limiting portion, the intervertebral fusion prosthesis can be spirally coupled to the threaded portion through the threaded groove of the intervertebral fusion prosthesis between the two clamps. Since the sliding portion performs horizontal motion with respect to the entry portion, the intervertebral fusion prosthesis is buckled into the two anti-rotation grooves of the intervertebral fusion prosthesis by the two anti-rotation protrusions of the sliding portion between the two clamps, and is clamped by the two clamps opposite to the entry portion by moving between the two clamps.
[0019] When the holding tube has two clamps and an entry portion along a straight line and the threaded portion of the coupling rod and the sliding portion of the guide tube are exposed between the two clamps through the entry portion, the intervertebral fusion prosthesis can have the following components in a manner of being located between the two clamps to have a specified length: a docking portion, located in front of the intervertebral fusion prosthesis and on the opposite side of the entry portion; a bone fusion portion, extending from the docking portion; and a connecting portion, located behind the intervertebral fusion prosthesis and extending from the bone fusion portion toward the opposite side of the docking portion. The connecting portion can be spirally coupled to the coupling rod by accommodating the threaded portion in the thread groove of the connecting portion, and is subjected to external force through at least one of the coupling rod and the guide tube.
[0020] For the above-mentioned docking part, the above-mentioned bone fusion part and the above-mentioned connecting part, the above-mentioned docking part may have a first outer peripheral surface along one side of the above-mentioned intervertebral fusion prosthesis, the above-mentioned bone fusion part may have a second outer peripheral surface along the left side of the above-mentioned intervertebral fusion prosthesis, the above-mentioned bone fusion part may have a third outer peripheral surface along the right side of the above-mentioned intervertebral fusion prosthesis, the above-mentioned connecting part may have a fourth outer peripheral surface along the other side of the above-mentioned intervertebral fusion prosthesis, the above-mentioned docking part, the above-mentioned bone fusion part and the above-mentioned connecting part may have a fifth outer peripheral surface along the lower outermost part of the above-mentioned intervertebral fusion prosthesis, and the above-mentioned docking part, the above-mentioned bone fusion part and the above-mentioned connecting part may have a sixth outer peripheral surface along the upper outermost part of the above-mentioned intervertebral fusion prosthesis.
[0021] The above-mentioned first outer peripheral surface may be located at a position away from the above-mentioned entry portion, and the above-mentioned fourth outer peripheral surface may face the above-mentioned entry portion. The above-mentioned first outer peripheral surface and the above-mentioned fourth outer peripheral surface may be located between the second outer peripheral surface, the third outer peripheral surface, the fifth outer peripheral surface and the sixth outer peripheral surface and form a curved surface. The area of the above-mentioned first outer peripheral surface may be smaller than the area of the above-mentioned fourth outer peripheral surface.
[0022] The second outer peripheral surface may connect the first outer peripheral surface and the fourth outer peripheral surface and the fifth outer peripheral surface and the sixth outer peripheral surface between the first outer peripheral surface and the fourth outer peripheral surface. The height of the second outer peripheral surface may be smaller than that of the third outer peripheral surface.
[0023] The above-mentioned third outer peripheral surface can connect the above-mentioned first outer peripheral surface and the above-mentioned fourth outer peripheral surface and the fifth outer peripheral surface and the sixth outer peripheral surface between the above-mentioned first outer peripheral surface and the above-mentioned fourth outer peripheral surface. The height of the above-mentioned second outer peripheral surface can be greater than the height of the above-mentioned second outer peripheral surface, and compared with the above-mentioned second outer peripheral surface, it can be relatively convexly curved toward the direction pointing to the above-mentioned third outer peripheral surface.
[0024] The above-mentioned fourth outer peripheral surface may have a thread groove that passes through the central area of the above-mentioned fourth outer peripheral surface to be formed inside the above-mentioned docking part, and may have anti-rotation grooves located on both sides of the above-mentioned thread groove in the above-mentioned fourth outer peripheral surface and passing through the above-mentioned fourth outer peripheral surface and formed in the above-mentioned interior of the above-mentioned docking part. The above-mentioned threaded portion of the above-mentioned combining rod is buckled into the above-mentioned thread groove of the above-mentioned docking part in the above-mentioned intervertebral fusion prosthesis, and the individual anti-rotation protrusions of the above-mentioned sliding part can be buckled into the above-mentioned anti-rotation groove of the above-mentioned docking part in the above-mentioned intervertebral fusion prosthesis.
[0025] The fifth outer peripheral surface and the sixth outer peripheral surface may be located between the first outer peripheral surface and the fourth outer peripheral surface, bulge from the first outer peripheral surface and the fourth outer peripheral surface toward the fifth outer peripheral surface and the sixth outer peripheral surface, and gradually expand from the second outer peripheral surface toward the third outer peripheral surface.
[0026] The second outer peripheral surface, the third outer peripheral surface, the fifth outer peripheral surface and the sixth outer peripheral surface may have multiple bone storage holes. Along the same virtual horizontal line between the above-mentioned second outer peripheral surface and the above-mentioned third outer peripheral surface, the multiple bone storage holes on the above-mentioned second outer peripheral surface correspond one-to-one to the multiple bone storage holes on the above-mentioned third outer peripheral surface. Along the same virtual vertical line between the above-mentioned fifth outer peripheral surface and the above-mentioned sixth outer peripheral surface, the multiple bone storage holes on the above-mentioned fifth outer peripheral surface correspond one-to-one to the multiple bone storage holes on the above-mentioned sixth outer peripheral surface.
[0027] The individual bone storage holes on the second outer peripheral surface and the individual bone storage holes on the third outer peripheral surface can be connected through a first common hole located between the individual bone storage holes on the second outer peripheral surface and the individual bone storage holes on the third outer peripheral surface along the above-mentioned virtual horizontal line, and the individual bone storage holes on the fifth outer peripheral surface and the individual bone storage holes on the sixth outer peripheral surface can be connected through a second common hole located between the individual bone storage holes on the fifth outer peripheral surface and the individual bone storage holes on the sixth outer peripheral surface along the above-mentioned virtual vertical line.
[0028] The first common hole or the second common hole can be formed in plurality and isolated between the second outer peripheral surface, the third outer peripheral surface, the fifth outer peripheral surface and the sixth outer peripheral surface, and the first common hole intersects with the second common hole between the second outer peripheral surface, the third outer peripheral surface, the fifth outer peripheral surface and the sixth outer peripheral surface.
[0029] The fifth outer peripheral surface may have two first serrated tracks along the left and right peripheries of the intervertebral fusion prosthesis, and the sixth outer peripheral surface may have two second serrated tracks along the left and right peripheries of the intervertebral fusion prosthesis.
[0030] The fifth outer peripheral surface may have a plurality of the bone storage holes between the two first sawtooth tracks, and the sixth outer peripheral surface may have a plurality of the bone storage holes between the two second sawtooth tracks.
[0031] The fifth outer peripheral surface and the sixth outer peripheral surface may have a large bone storage hole between the above-mentioned docking part and the above-mentioned connecting part, which exposes the interior of the above-mentioned bone fusion part by penetrating the above-mentioned fifth outer peripheral surface and the sixth outer peripheral surface. In the above-mentioned fifth outer peripheral surface, there is a bone storage hole between the individual first serrated track and the above-mentioned bone storage hole. In the above-mentioned sixth outer peripheral surface, there is a bone storage hole between the individual second serrated track and the above-mentioned bone storage hole.
[0032] When two first serrated tracks are formed on both side edges of the fifth outer peripheral surface and two second serrated tracks are formed on both side edges of the sixth outer peripheral surface along the length direction of the fifth outer peripheral surface and the sixth outer peripheral surface, in the first outer peripheral surface or the fourth outer peripheral surface, the height of the second outer peripheral surface may be smaller than the height of the third outer peripheral surface. When the position of the second outer peripheral surface is lower than the position of the third outer peripheral surface, an angle of 6° to 12° is formed between a vertical line passing through the center of the first outer peripheral surface or the fourth outer peripheral surface and a diagonal line connecting the two first or second serrated tracks.
[0033] The height of the second outer peripheral surface or the third outer peripheral surface may reach a range of 9 mm to 13 mm in the central area of the above-mentioned second outer peripheral surface or the third outer peripheral surface, the length of the fifth or sixth outer peripheral surface may reach a range of 40 mm to 50 mm between the above-mentioned first outer peripheral surface and the above-mentioned second outer peripheral surface, and the width of the above-mentioned fifth or sixth outer peripheral surface may reach a range of 16 mm to 22 mm in the central area of the above-mentioned fifth or sixth outer peripheral surface.
[0034] The abutting portion, the bone fusion portion, and the connecting portion may include titanium (Ti) or polyetheretherketone (PEEK).
[0035] When the holding tube has two clamps and an entry portion along a straight line and the threaded portion of the coupling rod and the sliding portion of the guide tube are exposed between the two clamps through the entry portion and the intervertebral fusion prosthesis spirally coupled to the threaded portion is clamped between the two clamps, the intervertebral guide may include: a columnar adjustment operating portion located outside the patient's body; an adjustment support portion located on the adjustment operating portion and located around the incision site of the body; and an adjustment tunnel portion passing through the incision site of the body and reaching the area between the two vertebrae, the adjustment tunnel portion accommodating the intervertebral fusion prosthesis, the two clamps and the entry portion on the adjustment support portion.
[0036] The above-mentioned adjustment support portion can form a main body near the above-mentioned adjustment operation portion and be divided into two armrests at a position away from the above-mentioned adjustment operation portion, and has a bending portion and a bracket located in sequence along the length direction of the individual armrest. When the above-mentioned bracket is pressed by the two above-mentioned clips and the above-mentioned entry portion, the above-mentioned bending portion changes the height of the above-mentioned bending portion along the length direction of the above-mentioned individual armrest.
[0037] The above-mentioned adjustment support portion can form a main body near the above-mentioned adjustment operation portion and be divided into two armrests at a position away from the above-mentioned adjustment operation portion, and has a bracket in contact with the above-mentioned adjustment tunnel portion in the individual armrest. When the above-mentioned bracket is pressed by the two above-mentioned clips and the above-mentioned entry portion, the above-mentioned individual armrests are unfolded at a right angle in the length direction of the above-mentioned individual armrests.
[0038] When the above-mentioned adjustment support portion forms a main body near the above-mentioned adjustment operation portion and is divided into two armrests at a position away from the above-mentioned adjustment operation portion, the above-mentioned adjustment tunnel portion may include: an entry and exit channel, which is inserted into and fixed to the two above-mentioned armrests and extends in a direction away from the two above-mentioned armrests; and an entry and exit channel, which is formed as a whole with the above-mentioned entry and exit channel on the opposite side of the individual armrests, and the width gradually decreases relative to the width of the above-mentioned entry and exit channel.
[0039] The inlet and outlet passage may have two inlet and outlet guide blades fixed to the two armrests, bent toward the interior of each armrest at the lower and upper sides, and the inlet and outlet passage may have inlet and outlet guide blades bent toward the center axis between the two inlet and outlet guide blades.
[0040] As for the above-mentioned entrance and exit channel and the above-mentioned entrance and exit channel, when the above-mentioned connecting rod and the above-mentioned entry part move between the two above-mentioned clamps, the above-mentioned intervertebral fusion prosthesis, the two above-mentioned clamps and the above-mentioned entry part can be accommodated in the above-mentioned entrance and exit channel and the above-mentioned entrance and exit channel, and the above-mentioned intervertebral fusion prosthesis is introduced between the two above-mentioned vertebral bodies through the above-mentioned entrance and exit channel and the two above-mentioned clamps.
[0041] In order to make the above-mentioned intervertebral fusion prosthesis form a "cross" shape with the above-mentioned spinal cord between the two above-mentioned vertebrae, the threaded portion of the above-mentioned connecting rod can be separated from the threaded groove of the above-mentioned intervertebral fusion prosthesis between the two above-mentioned vertebrae, and one of the two anti-rotation protrusions of the above-mentioned intervertebral fusion prosthesis is separated from the above-mentioned intervertebral fusion prosthesis in the above-mentioned sliding portion, and the above-mentioned intervertebral fusion prosthesis is rotated relative to the above-mentioned spinal cord between the two above-mentioned vertebrae through the remaining anti-rotation protrusion.
[0042] The spinal surgical device of the present invention has the following effects, namely, it includes an intervertebral insertion module with a shortened folding structure, a box-shaped intervertebral fusion prosthesis, and an intervertebral guide with a tunnel structure. The intervertebral fusion prosthesis is combined at the front end of the intervertebral insertion module around the patient's body, the intervertebral guide is inserted into the incision site of the patient's body, the patient's spine is exposed to the outside through the intervertebral guide, the intervertebral insertion module and the intervertebral fusion prosthesis are inserted into the above-mentioned intervertebral guide, the length of the folding structure is changed in the intervertebral insertion module, and the intervertebral fusion prosthesis is introduced between two vertebrae along the intervertebral guide, the length of the folding structure is changed in the intervertebral insertion module, and the intervertebral fusion prosthesis is rotated. The fusion prosthesis is used to position the intervertebral fusion prosthesis in the central area (= cancellous bone) and the side edges (= cortical bone) of the vertebral body. In spinal fusion surgery, which is a surgical treatment for degenerative spinal diseases, the intervertebral fusion prosthesis is positioned on the cancellous bone and cortical bone of the vertebral body to prevent the intervertebral fusion prosthesis from settling in advance. When radiographing, the balance of the spine is maintained in the left and right and front and back of the body when viewed from the sagittal and coronal planes. During the operation, the patient's body is minimally incised, and the intervertebral insertion module and intervertebral fusion prosthesis are inserted into the incised part of the body along the intervertebral guide, so that the incised part of the body can continue to maintain its original shape. BRIEF DESCRIPTION OF THE DRAWINGS
[0043] Figure 1 A schematic diagram showing the spinal surgery apparatus of the present invention.
[0044] Figure 2 To show Figure 1 An exploded perspective view of an intervertebral insertion module in a spinal surgical device.
[0045] Figure 3 Part (a) shows Figure 2 Stereoscopic view of the intervertebral insertion module.
[0046] Figure 3 Part (b) shows a portion of Figure 3 (a) is a stereoscopic view of the intervertebral insertion module.
[0047] Figure 4 Part (a) shows Figure 1 A three-dimensional view of an intervertebral fusion prosthesis in a spinal surgical apparatus.
[0048] Figure 4 Part (b) is shown in detail in Figure 4 (a) is a cross-sectional view of the bone fusion portion of the intervertebral fusion prosthesis.
[0049] Figure 4 Part (c) shows Figure 4 (a) is a front view of the docking portion of the intervertebral fusion prosthesis.
[0050] Figure 4 Part (d) shows Figure 4 (a) is a front view of the connection portion of the intervertebral fusion prosthesis.
[0051] Figure 5 To show that Figure 4 (a) shows the positions for measuring the length (L), width (W), height (H), and angle (α) of the intervertebral fusion prosthesis after it is erected, as viewed from multiple angles.
[0052] Figure 6 To show Figure 4 Part (a) is a perspective view of a modified example of an intervertebral fusion prosthesis.
[0053] Figure 7 Part (a) is shown from one side Figure 1 A stereoscopic view of an intervertebral guide in a spinal surgery device.
[0054] Figure 7 Part (b) shows the Figure 7 (a) is a stereoscopic view of the intervertebral guide.
[0055] Figure 8 Part (a) shows Figure 7 Part (a) is a perspective view of the adjustment support portion in the intervertebral guide.
[0056] Figure 8 Part (b) shows the Figure 8 (a) is a perspective view of a modified example of the adjustment support portion.
[0057] Figure 9 To briefly show the direction Figure 1 A three-dimensional diagram showing the positional relationship between the vertebral bodies and the intervertebral fusion prosthesis after the intervertebral fusion prosthesis is introduced between the two vertebral bodies and the intervertebral fusion prosthesis is rotated on the vertebral bodies. DETAILED DESCRIPTION
[0058] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.
[0059] Figure 1 1 is a simplified diagram showing the spinal surgery apparatus of the present invention. Figure 9 To briefly show the direction Figure 1 A three-dimensional diagram showing the positional relationship between the vertebral bodies and the intervertebral fusion prosthesis after the intervertebral fusion prosthesis is introduced between the two vertebral bodies and the intervertebral fusion prosthesis is rotated on the vertebral bodies.
[0060] Reference Figure 1 and Figure 9The spinal surgery apparatus 180 of the present invention is used to perform spinal fusion surgery between two adjacent vertebrae associated with degenerative spinal disease in a patient's back along a direction D. Briefly, the spinal surgery apparatus 180 includes an intervertebral insertion module 60, an intervertebral fusion prosthesis 90, and an intervertebral guide 150.
[0061] exist Figure 2 or Figure 3 In part (a), the intervertebral insertion module 60 is formed in a shortened (telescope) folded structure. Figure 4 In part (a), the intervertebral fusion prosthesis 90 is formed into a box shape and is coupled to the intervertebral insertion module 60. The intervertebral guide 150 is inserted into the incision site of the patient's body along a direction D to surround the intervertebral insertion module 60 and the intervertebral fusion prosthesis 90 and insert the intervertebral insertion module 60 and the intervertebral fusion prosthesis 90 between the two vertebrae 193 and 196.
[0062] When observing the spinal cord 199 formed along the length direction of the spine 200, Figure 1 and Figure 9 The above-mentioned intervertebral fusion prosthesis 90 forms a "cross" shape with the spinal cord 199 between the two vertebrae 193 and 196, and contacts the two side edges 191 and 192 of the individual vertebrae 193 or 196 together with the central area of the individual vertebrae 193 or 196. The height of the position close to the spinal cord 199 is greater than the height of the position away from the spinal cord 199.
[0063] Figure 2 To show Figure 1 An exploded perspective view of an intervertebral insertion module in a spinal surgery device. Figure 3 Part (a) shows Figure 2 A stereoscopic view of the intervertebral insertion module. Figure 3 Part (b) shows a portion of Figure 3 (a) is a stereoscopic view of the intervertebral insertion module.
[0064] Reference Figure 2 and Figure 3 Part (a) and Figure 3 In part (b), the intervertebral insertion module 60 includes a coupling rod 10 and a guide tube 30 and a holding tube 50 that surround the coupling rod 10 in sequence. Figure 2 and Figure 3 When the part (a) is formed, the above-mentioned combining rod 10, guide tube 30 and holding tube 50 form a shortened folding structure.
[0065] like Figure 2 As shown, the above-mentioned connecting rod 10 includes: a threaded portion 3, which is in the front and is connected to the intervertebral fusion prosthesis ( Figure 1 or Figure 4 (a) portion 90) spirally coupled; a sliding portion 6 extending horizontally from the threaded portion 3; and a driver 9, at the rear, extending from the sliding portion 6 toward the opposite side of the threaded portion 3.
[0066] Among them, when considering Figure 3 Part (a) and Figure 3 In part (b), the threaded portion 3 and the driver 9 are located around one end and the other end of the guide tube 30. When the driver 9 moves (M1 or R) relative to the other end of the guide tube 30, the threaded portion 3 moves in and out of the one end of the guide tube 30.
[0067] When the above-mentioned connecting rod 10 has a threaded portion 3, a sliding portion 6 and a driver 9 connected in sequence, as shown in FIG. Figure 2 As shown, the guide tube 30 includes a sliding portion 23, a limiting portion 26 and a pressurizing operation portion 29. Figure 2 and Figure 3 Part (a) and Figure 3 In part (b), the sliding portion 23 surrounds the threaded portion 3 and the sliding portion 6 in front of the guide tube 30 and guides the movement of the threaded portion 3 and the sliding portion 6.
[0068] When considering Figure 2 and Figure 3 Part (a) and Figure 3 In the case of part (b), the limiting portion 26 extends from the sliding portion 23 to the opposite side of the sliding portion 23 behind the guide tube 30 and surrounds the driver 9 to limit the movement of the driver 9. Figure 2 As shown, the pressing operation portion 29 protrudes from the outer peripheral surface of the restricting portion 26 .
[0069] Among them, when considering Figure 2 and Figure 3 In the case of the portion (a), the length of the sliding portion 23 and the limiting portion 26 along the longitudinal direction of the intervertebral insertion module 10 is smaller than the length of the threaded portion 3, the sliding portion 6 and the driver 9. Figure 3 a and Figure 3 In b, the sliding portion 23 and the restricting portion 26 move relative to the gripping tube 50 ( M2 ). The sliding portion 23 has two anti-rotation protrusions 22 on the opposite side of the restricting portion 26 .
[0070] And, in Figure 3 Part (a) and Figure 3In part (b), when the combining rod 10 moves relative to the guide tube 30, in the sliding portion 23, the sliding portion 23 and the limiting portion 26 allow the threaded portion 3 to move in and out between the two anti-rotation protrusions 22, and in the limiting portion 26, the movement of a part of the driver 9 is restricted by inserting a part of the driver 9 into the interior of the limiting portion 26, and in the limiting portion 26, the remaining part of the driver 9 is exposed to the outside of the limiting portion 26 to allow the remaining part of the driver 9 to move freely.
[0071] When the guide tube 30 has a sliding portion 23 and a limiting portion 26 along a straight line and surrounds the threaded portion 3 and the gliding portion 6 of the coupling rod 10 in the sliding portion 23, and surrounds the driver 9 of the coupling rod 10 in the limiting portion 26, as shown in FIG. Figure 2 As shown, the holding tube 50 includes two clamps 44 and an entry portion 48 .
[0072] like Figure 1 As shown, the two clips 44 receive the intervertebral fusion prosthesis 90 in the front and clamp the intervertebral fusion prosthesis 90. Figure 3 Part (a) and Figure 3 As shown in part (b) of FIG. 1 , the entry portion 48 is formed integrally with the two clips 44 at one end at the rear to surround a portion of the sliding portion 23 and allow the remaining portion of the sliding portion 23 to enter and exit.
[0073] Among them, when considering Figure 1 When the two clamps 44 and the entry portion 48 are inserted into the intervertebral fusion prosthesis 90, the intervertebral fusion prosthesis 90 is inserted into the intervertebral guide 90. On the other hand, since the driver 9 performs a relative rotational motion (R) relative to the restriction portion 26, the intervertebral fusion prosthesis 90 passes through the thread groove ( Figure 4 The G1 of the portion (d) is spirally coupled to the threaded portion 3 .
[0074] Furthermore, since the sliding portion 23 moves horizontally relative to the entry portion 48 (M2), the intervertebral fusion prosthesis 90 is buckled between the two clips 44 toward the two anti-rotation protrusions 22 of the sliding portion 23 into the two anti-rotation grooves of the intervertebral fusion prosthesis 90 ( Figure 4 G2 of part (d) is clamped by the two clamps 44 on the opposite side of the entry portion 48 by moving between the two clamps 44.
[0075] Figure 4 Part (a) shows Figure 1 A three-dimensional view of an intervertebral fusion prosthesis in a spinal surgical device. Figure 4 Part (b) is shown in detail in Figure 4 (a) is a cross-sectional view of the bone fusion portion of the intervertebral fusion prosthesis, Figure 4 Part (c) shows Figure 4(a) is a front view of the docking portion of the intervertebral fusion prosthesis, Figure 4 Part (d) shows Figure 4 (a) is a front view of the connection portion of the intervertebral fusion prosthesis.
[0076] Figure 5 To show that Figure 4 The figure (a) shows the measurement positions of the length (L), width (W), height (H) and angle (α) of the intervertebral fusion prosthesis after it is erected, Figure 6 To show Figure 4 Part (a) is a perspective view of a modified example of an intervertebral fusion prosthesis.
[0077] Reference Figure 4 Part (a) to Figure 4 Part (d) and Figure 5 and Figure 6 , when the above holding tube ( Figure 2 50) has two clips ( Figure 2 44) and enter the department ( Figure 2 48) and expose the connecting rod ( Figure 2 10) of the threaded portion ( Figure 2 3) and guide tube ( Figure 2 30) sliding portion ( Figure 2 23) When Figure 4 As shown in part (a) of FIG. 8 , the intervertebral fusion prosthesis 90 includes a docking portion 83 , a bone fusion portion 86 , and a connecting portion 89 , which is positioned between two clips 44 and has a predetermined length.
[0078] When considering Figure 1 and Figure 4 In the case of the portion (a), the docking portion 83 is located in front of the intervertebral fusion prosthesis 90 on the opposite side of the entry portion 48. Figure 4 As shown in part (a) of FIG. 8 , the bone fusion portion 86 extends from the docking portion 83. Figure 4 As shown in part (a) of FIG. 1 , the connecting portion 89 is located at the rear of the intervertebral fusion prosthesis 90 and extends from the bone fusion portion 86 toward the opposite side of the docking portion 83. Figure 1 and Figure 4 In part (d), the connecting portion 89 is spirally coupled to the coupling rod 10 by receiving the threaded portion 3 in the thread groove G1 of the connecting portion 89 , and at least one of the coupling rod 10 and the guide tube 30 is subjected to external force.
[0079] like Figure 4 Part (a) of Figure 4 Part (c) and Figure 4As shown in part (d), with respect to the above-mentioned docking portion 83, the bone fusion portion 86 and the connecting portion 89, the docking portion 83 has a first outer peripheral surface (not shown) along one side of the intervertebral fusion prosthesis 90, the bone fusion portion 86 has a second outer peripheral surface (not shown) along the left side of the intervertebral fusion prosthesis 90, the bone fusion portion 86 has a third outer peripheral surface (not shown) along the right side of the intervertebral fusion prosthesis 90, and the connecting portion 89 has a fourth outer peripheral surface (not shown) along the other side of the intervertebral fusion prosthesis 90.
[0080] And, as Figure 4 Part (a) of Figure 4 Part (c) and Figure 4 As shown in part (d), for the above-mentioned docking part 83, bone fusion part 86 and connecting part 89, there is a fifth outer peripheral surface S1 along the lower outermost fifth outer peripheral surface S1 of the intervertebral fusion prosthesis 90 in the docking part 83, bone fusion part 86 and connecting part 89, and there is a sixth outer peripheral surface S2 along the upper outermost part of the intervertebral fusion prosthesis 90 in the docking part 83, bone fusion part 86 and connecting part 89.
[0081] When considering Figure 1 、 Figure 4 Part (a) and Figure 4 In the case of the portion (c), the first outer peripheral surface is located away from the entry portion 48. Figure 1 、 Figure 4 Part (a) and Figure 4 As shown in (d), the fourth outer peripheral surface faces the entry portion 48. The first and fourth outer peripheral surfaces are located between the second, third, fifth, and sixth outer peripheral surfaces S1 and S2 to form a curved surface, and the area of the first outer peripheral surface is smaller than that of the fourth outer peripheral surface.
[0082] like Figure 4 As shown in part (a) of FIG, the second outer peripheral surface connects the first outer peripheral surface and the fourth outer peripheral surface and the fifth outer peripheral surface S1 and the sixth outer peripheral surface S2 between the first outer peripheral surface and the fourth outer peripheral surface, as shown in FIG. Figure 4 As shown in part (a), the height of the second peripheral surface is smaller than the height of the third peripheral surface. Figure 4 As shown in part (a), the above-mentioned third outer peripheral surface connects the first outer peripheral surface and the fourth outer peripheral surface and the fifth outer peripheral surface S1 and the sixth outer peripheral surface S2 between the first outer peripheral surface and the fourth outer peripheral surface. The height of the above-mentioned third outer peripheral surface is greater than the height of the second outer peripheral surface. Compared with the second outer peripheral surface, it is relatively convexly curved toward the direction pointing to the third outer peripheral surface.
[0083] like Figure 4 Part (a) and Figure 4As shown in part (d), the fourth outer peripheral surface has a thread groove G1 formed inside the docking portion 83 by penetrating the central area of the fourth outer peripheral surface, and has an anti-rotation groove G2 located on both sides of the thread groove G1 in the fourth outer peripheral surface, penetrating the fourth outer peripheral surface and formed inside the docking portion 83. Figure 1 、 Figure 2 and Figure 4 In part (d), the threaded portion 3 of the coupling rod 10 is buckled into the thread groove G1 of the docking portion 83 in the intervertebral fusion prosthesis 90 .
[0084] When considering Figure 1 、 Figure 2 and Figure 3 Part (b) and Figure 4 In the (d) portion, the individual anti-rotation protrusions 22 of the sliding portion 23 are buckled into the anti-rotation grooves G2 of the docking portion 83 in the intervertebral fusion prosthesis 90. Figure 4 As shown in part (a), the fifth outer peripheral surface S1 and the sixth outer peripheral surface S2 are located between the first outer peripheral surface and the fourth outer peripheral surface, bulge from the first outer peripheral surface and the fourth outer peripheral surface toward the fifth outer peripheral surface S1 and the sixth outer peripheral surface S2, and gradually expand from the second outer peripheral surface toward the third outer peripheral surface.
[0085] like Figure 4 As shown in part (b), the second outer surface, the third outer surface, the fifth outer surface S1 and the sixth outer surface S2 have multiple bone storage holes 74. Along the same virtual horizontal line between the second outer surface and the third outer surface, the multiple bone storage holes 74 on the second outer surface correspond one-to-one to the multiple bone storage holes on the third outer surface. Along the same virtual vertical line between the fifth outer surface S1 and the sixth outer surface S2, the multiple bone storage holes 74 on the fifth outer surface correspond one-to-one to the multiple bone storage holes 74 on the sixth outer surface.
[0086] like Figure 4 As shown in part (b), the individual bone storage holes 74 on the second peripheral surface and the individual bone storage holes 74 on the third peripheral surface are connected via a first common hole H1 located along a virtual horizontal line between the individual bone storage holes 74 on the second peripheral surface and the individual bone storage holes 74 on the third peripheral surface. Figure 4 As shown in part (b), the individual bone storage holes 74 of the fifth peripheral surface S1 and the individual bone storage holes 74 of the sixth peripheral surface S2 are connected by a second common hole H2 located between the individual bone storage holes 74 of the fifth peripheral surface S1 and the individual bone storage holes 74 of the sixth peripheral surface S2 along a virtual vertical line.
[0087] When considering Figure 4In the case of part (b), the first common holes H1 or the second common holes H2 are formed in plurality and isolated between the second peripheral surface, the third peripheral surface, the fifth peripheral surface S1 and the sixth peripheral surface S2. Figure 4 As shown in part (b) of FIG, the first common hole H1 intersects the second common hole H2 between the second outer peripheral surface, the third outer peripheral surface, the fifth outer peripheral surface S1, and the sixth outer peripheral surface S2. Figure 4 Part (a) of Figure 4 Part (c) and Figure 4 As shown in part (d) of FIG. 8 , the fifth outer peripheral surface S1 has two first serrated tracks 78 along the left and right peripheries of the intervertebral fusion prosthesis 90 .
[0088] like Figure 4 Part (a) of Figure 4 Part (c) and Figure 4 As shown in part (d), the sixth outer peripheral surface S2 has two second sawtooth tracks 78 along the left and right sides of the intervertebral fusion prosthesis 90. Figure 4 Part (a) to Figure 4 In the case of the portion (d), the fifth peripheral surface S1 has a plurality of bone storage holes 74 between the two first sawtooth tracks. Figure 4 Part (a) to Figure 4 As shown in part (d) of FIG. 5 , the sixth outer peripheral surface S2 has a plurality of bone storage holes 74 between the two second serrated tracks 78 .
[0089] In contrast, Figure 4 The intervertebral fusion prosthesis 90 can be Figure 6 The intervertebral fusion prosthesis 120 is replaced. The intervertebral fusion prosthesis 120 is also formed by the docking part 113, the bone fusion part 116, and the connecting part 119. The docking part 113, the bone fusion part 116, and the connecting part 119 have the same Figure 4 The shapes of the butt joint 83, the bone fusion part 86 and the connecting part 89 are similar, but the bone fusion part 116 has the same shape as the Figure 4 The bone fusion part has 86 different structures.
[0090] Specifically, in the above-mentioned bone fusion part 116, the fifth outer peripheral surface S3 and the sixth outer peripheral surface S4 have a large bone storage hole 106 between the docking part 113 and the connecting part 119, which exposes the interior of the bone fusion part 116 by penetrating the fifth outer peripheral surface S3 and the sixth outer peripheral surface S4. In the fifth outer peripheral surface S3, there is a bone storage hole 106 between the individual first serrated track 109 and the large bone storage hole 103, and in the sixth outer peripheral surface S4, there is a bone storage hole 106 between the individual second serrated track 109 and the large bone storage hole 103.
[0091] on the other hand, Figure 4 When two first sawtooth tracks 78 are formed on both side edges of the fifth outer peripheral surface S1 and two second sawtooth tracks 78 are formed on both side edges of the sixth outer peripheral surface S2 along the length direction of the fifth outer peripheral surface S1 and the sixth outer peripheral surface S2, as shown in FIG. Figure 5 As shown, in the above-mentioned first outer peripheral surface or fourth outer peripheral surface, the height H of the second outer peripheral surface is less than the height H of the third outer peripheral surface. When the position of the second outer peripheral surface is lower than the position of the third outer peripheral surface, an angle α of 6° to 12° is formed between the vertical line P1 passing through the center of the first outer peripheral surface or the fourth outer peripheral surface and the oblique line P2 connecting the two first or second zigzag tracks 78.
[0092] And, as Figure 5 As shown, the height H of the second or third outer peripheral surface reaches a range of 9 mm to 13 mm in the central area of the second or third outer peripheral surface. The length L of the fifth or sixth outer peripheral surface S1, S2 reaches a range of 40 mm to 50 mm between the first outer peripheral surface and the second outer peripheral surface. The width W of the fifth or sixth outer peripheral surface S1, S2 reaches a range of 16 mm to 22 mm in the central area of the fifth or sixth outer peripheral surface S1, S2. Figure 6 The intervertebral fusion prosthesis 120 may have Figure 5 The intervertebral fusion prosthesis 90 has the same size range of angle, height H, length L, and width W.
[0093] The docking portion 83 or 113 , the bone fusion portion 86 or 116 , and the connecting portion 89 or 119 comprise titanium or polyetheretherketone.
[0094] Figure 7 Part (a) is shown from one side Figure 1 A three-dimensional view of an intervertebral guide in a spinal surgery device. Figure 7 Part (b) shows the Figure 7 (a) is a stereoscopic view of the intervertebral guide.
[0095] and, Figure 8 Part (a) shows Figure 7 (a) is a perspective view of the adjustment support portion of the intervertebral guide, Figure 8 Part (b) shows the Figure 8 (a) is a perspective view of a modified example of the adjustment support portion.
[0096] Reference Figure 7 Part (a) of Figure 7 Part (b) of Figure 8 Part (a) and Figure 8 (b) of the above holding tube ( Figure 2 50) along a straight line having two clamps ( Figure 2 44) and enter the department ( Figure 2 48) and expose the connecting rod ( Figure 2 10) of the threaded portion ( Figure 2 3) and guide tube ( Figure 2 30) sliding portion ( Figure 2 23) and the intervertebral fusion prosthesis ( Figure 1 90) when, if Figure 7 As shown in part (a) of FIG. 1 , the intervertebral guide 150 includes an adjustment operation portion 143 , an adjustment support portion 146 , and an adjustment tunnel portion 149 .
[0097] The adjustment operation part 143 is in a column shape and is located outside the patient's body. The adjustment support part 146 passes through the incision part of the patient's body and reaches the two vertebrae ( Figure 1 The area between 193 and 196). Figure 1 and Figure 7 In part (a), the adjustment tunnel portion 149 accommodates the intervertebral fusion prosthesis 90 , the two clips 44 , and the entry portion 48 on the adjustment support portion 146 .
[0098] like Figure 7 Part (a) of Figure 7 Part (b) and Figure 8 As shown in part (a), the adjustment support portion 146 forms a main body near the adjustment operation portion 143 and is divided into two armrests 133 and 134 at a position away from the adjustment operation portion 143, and has a bent portion 131 and a bracket 132 sequentially located on the individual armrests 133 or 134 along the length direction of the individual armrests 133 or 134. Figure 1 、 Figure 7 Part (a) and Figure 8 In part (a), when the bracket 132 is pressed by the two clips 44 and the entry portion 48 , the height of the bent portion 131 changes along the length direction of the individual armrest 133 or 134 .
[0099] In contrast, Figure 8 The adjustment support portion 146 of part (a) may be Figure 8 Specifically, the adjustment support portion 170 is replaced by the adjustment support portion 170 in the adjustment operation portion ( Figure 7 (a) portion 143) forms a body and is divided into two armrests 166, 168 at a position away from the adjustment operation portion 143, with an adjustment tunnel portion ( Figure 7(a) of the portion 149) contacts the bracket 164. Wherein, when considering Figure 1 and Figure 8 In part (b), when the bracket 164 is pressed by the two clips 44 and the entry portion 48, the above-mentioned individual armrests 166 or 168 are unfolded at a right angle in the longitudinal direction of the individual armrests 166 or 168.
[0100] On the other hand, Figure 7 Part (a) and Figure 8 As shown in part (a) of FIG, when the adjustment support portion 146 forms a body near the adjustment operating portion 143 and is divided into two armrests 133 and 134 at a position away from the adjustment operating portion 143, as shown in FIG. Figure 7 Part (a) and Figure 7 As shown in part (b) of FIG, the regulating tunnel portion 149 includes an inlet and outlet passage 137 and an inlet and outlet passage 139. Figure 7 Part (a) and Figure 7 As shown in part (b) of the drawing, the access passage 137 is inserted into and fixed to the two armrests 133 and 134 and extends in a direction away from the two armrests 133 and 134.
[0101] like Figure 7 Part (a) and Figure 7 As shown in part (b) of FIG, the entrance and exit passage 139 is formed integrally with the entrance and exit passage 137 on the opposite side of the individual handrails 133 and 134, and its width gradually decreases relative to the width of the entrance and exit passage 137. Figure 7 As shown in part (a) of FIG. 1 , the inlet and outlet passage 137 has two inlet and outlet guide blades 136 fixed to the two handrails 133 and 134 and bent at the lower and upper sides toward the interior of the respective handrails 133 or 134. Figure 7 As shown in part (a) of FIG. 1 , the inlet and outlet passage 139 includes an inlet and outlet guide vane 138 that is bent toward the central axis between the two inlet and outlet guide vanes 136 .
[0102] When considering Figures 1 to 3 and Figure 7 When the connecting rod 10 and the entry portion 48 move between the two clamps 44, the intervertebral fusion prosthesis 90, the two clamps 44, and the entry portion 48 are accommodated in the entry and exit channel 137 and the entry and exit channel 139, and the intervertebral fusion prosthesis 90, the two clamps 44, and the entry portion 48 are inserted into the two vertebrae ( Figure 1 An intervertebral fusion prosthesis 90 is introduced between 193 and 196).
[0103] When considering Figures 1 to 3 and Figure 9In order to make the intervertebral fusion prosthesis 90 form a "cross" shape with the spinal cord 199 between the two vertebrae 193, 196, the threaded portion 3 of the coupling rod 10 is separated from the thread groove G1 of the intervertebral fusion prosthesis 90 between the two vertebrae 193, 196. Figure 2 、 Figure 3 and Figure 9 When the intervertebral fusion prosthesis 90 is rotated relative to the spinal cord 199 between the two vertebral bodies 193 and 196 , one of the two anti-rotation protrusions 22 is separated from the intervertebral fusion prosthesis 90 in the sliding portion 23 .
Claims
1. A spinal surgery apparatus for performing spinal fusion between two adjacent vertebrae associated with degenerative spinal disease in a spine through the back of a patient's body, characterized in that: include: The intervertebral insertion module is formed with a shortened folding structure; An intervertebral fusion prosthesis in combination with the above-mentioned intervertebral insertion module; and An intervertebral guide is inserted into the incision site of the patient's body to surround the intervertebral insertion module and the intervertebral fusion prosthesis and to introduce the intervertebral insertion module and the intervertebral fusion prosthesis between the two vertebrae. When viewed with the spinal cord formed along the length of the vertebrae as a reference, the intervertebral fusion prosthesis forms a "cross" shape with the spinal cord between the two vertebrae and contacts both side edges of the individual vertebrae together with the central region of the individual vertebrae, with the height of the position closer to the spinal cord being greater than the height of the position farther from the spinal cord. The intervertebral insertion module includes a connecting rod, a guide tube and a holding tube that surround the connecting rod in sequence. The above-mentioned combining rod, the above-mentioned guide tube and the above-mentioned holding tube form the above-mentioned shortened folding structure. The above-mentioned combining rod comprises: The threaded portion is located in the front and is spirally connected to the above-mentioned intervertebral fusion prosthesis; a sliding portion extending horizontally from the threaded portion; and A driver, extending from the sliding portion to the opposite side of the threaded portion at the rear, The threaded portion and the driver are located around one end and the other end of the guide tube. When the driver moves relative to the other end of the guide tube, the threaded portion moves in and out of one end of the guide tube. When the above-mentioned connecting rod has a threaded portion, a sliding portion and a driver connected in sequence, The guide tube includes: a sliding portion that surrounds the threaded portion and the sliding portion at the front and guides the movement of the threaded portion and the sliding portion; a restricting portion extending rearwardly from the sliding portion toward a side opposite to the sliding portion, surrounding the driver and restricting movement of the driver; and The pressurizing operation portion protrudes from the outer peripheral surface of the above-mentioned restricting portion, The length of the sliding portion and the limiting portion along the longitudinal direction of the intervertebral insertion module is smaller than the length of the threaded portion, the sliding portion and the driver. The sliding portion and the restricting portion move relative to the holding tube. In the above-mentioned sliding part, two anti-rotation protrusions are provided on the opposite side of the above-mentioned restricting part. When the coupling rod moves relative to the guide tube, the threaded portion moves in and out between the two anti-rotation protrusions in the sliding portion. In the restriction portion, a portion of the driver is inserted into the restriction portion to restrict movement of the portion of the driver. In the restricting portion, the remaining portion of the actuator is exposed to the outside of the restricting portion so that the remaining portion of the actuator can move freely. When the guide tube has a sliding portion and a limiting portion along a straight line and the sliding portion surrounds the threaded portion and the gliding portion of the coupling rod and the limiting portion surrounds the driver of the coupling rod, The above-mentioned holding tube includes: two clips for receiving and clamping the intervertebral fusion prosthesis in front; and The entry portion is formed into one piece with the two clips at the rear through one end, surrounds a part of the sliding portion and enables the remaining part of the sliding portion to enter and exit. The two clips and the entry portion are inserted into the intervertebral fusion prosthesis through the intervertebral guide. As the driver performs relative rotational motion with respect to the limiting portion, the intervertebral fusion prosthesis is screwed together with the threaded portion through the thread groove of the intervertebral fusion prosthesis between the two clamps. Since the sliding portion moves horizontally relative to the entry portion, the intervertebral fusion prosthesis is buckled into the two anti-rotation grooves of the intervertebral fusion prosthesis between the two clamps toward the two anti-rotation protrusions of the sliding portion, and is clamped by the two clamps opposite to the entry portion by moving between the two clamps.
2. The spinal surgery device according to claim 1, wherein: When the holding tube has two clamps and an entry portion along a straight line and the threaded portion of the coupling rod and the sliding portion of the guide tube are exposed between the two clamps through the entry portion, The intervertebral fusion prosthesis has the following components so as to be positioned between the two clips and have a predetermined length: The docking portion is located in front of the intervertebral fusion prosthesis and on the opposite side of the entry portion; a bone fusion portion extending from the abutting portion; and The connecting portion is located at the rear of the intervertebral fusion prosthesis and extends from the bone fusion portion toward the opposite side of the docking portion. The connecting portion is screwed together with the connecting rod by receiving the threaded portion in the threaded groove of the connecting portion. External force is applied to at least one of the coupling rod and the guide tube.
3. The spinal surgery device according to claim 2, wherein: For the above-mentioned docking part, the above-mentioned bone fusion part and the above-mentioned connection part, In the abutment portion, a first outer peripheral surface is provided along one side of the intervertebral fusion prosthesis. The bone fusion portion has a second outer peripheral surface along the left side of the intervertebral fusion prosthesis. In the bone fusion part, a third outer peripheral surface is provided along the right side of the intervertebral fusion prosthesis. The connecting portion has a fourth outer peripheral surface along the other side of the intervertebral fusion prosthesis. In the abutting portion, the bone fusion portion, and the connecting portion, a fifth outer peripheral surface is provided along the outermost periphery of the lower portion of the intervertebral fusion prosthesis. The abutting portion, the bone fusion portion, and the connecting portion include a sixth outer peripheral surface along the uppermost periphery of the intervertebral fusion prosthesis.
4. The spinal surgery device according to claim 3, wherein: The first outer peripheral surface is located away from the entry portion. The fourth outer peripheral surface faces the entry portion. The first outer peripheral surface and the fourth outer peripheral surface are located between the second outer peripheral surface, the third outer peripheral surface, the fifth outer peripheral surface and the sixth outer peripheral surface and form a curved surface. The area of the first outer peripheral surface is smaller than the area of the fourth outer peripheral surface.
5. The spinal surgery device according to claim 3, wherein: The second outer peripheral surface is between the first outer peripheral surface and the fourth outer peripheral surface, connecting the first outer peripheral surface and the fourth outer peripheral surface and the fifth outer peripheral surface and the sixth outer peripheral surface. The height of the second outer peripheral surface is smaller than the height of the third outer peripheral surface.
6. The spinal surgery device according to claim 3, wherein: The third outer peripheral surface is between the first outer peripheral surface and the fourth outer peripheral surface, connecting the first outer peripheral surface and the fourth outer peripheral surface and the fifth outer peripheral surface and the sixth outer peripheral surface. The height of the third outer peripheral surface is greater than the height of the second outer peripheral surface. Compared with the second outer peripheral surface, the outer peripheral surface is relatively convexly curved in a direction pointing toward the third outer peripheral surface.
7. The spinal surgery device according to claim 3, wherein: The fourth outer peripheral surface has a thread groove formed inside the docking portion and passing through a central area of the fourth outer peripheral surface. The fourth outer peripheral surface has an anti-rotation groove located on both sides of the thread groove in the fourth outer peripheral surface and penetrating the fourth outer peripheral surface and formed in the inner part of the docking portion. The threaded portion of the coupling rod is buckled into the threaded groove of the docking portion in the intervertebral fusion prosthesis. The individual anti-rotation protrusions of the sliding portion are buckled into the anti-rotation grooves of the docking portion in the intervertebral fusion prosthesis.
8. The spinal surgery device according to claim 3, wherein: The fifth outer peripheral surface and the sixth outer peripheral surface are located between the first outer peripheral surface and the fourth outer peripheral surface. It bulges from the first outer peripheral surface and the fourth outer peripheral surface toward the fifth outer peripheral surface and the sixth outer peripheral surface, It gradually expands from the second outer peripheral surface toward the third outer peripheral surface.
9. The spinal surgery device according to claim 3, wherein: There are multiple bone storage holes on the second peripheral surface, the third peripheral surface, the fifth peripheral surface and the sixth peripheral surface. Along the same virtual horizontal line between the second outer peripheral surface and the third outer peripheral surface, the plurality of bone storage holes on the second outer peripheral surface correspond one to one with the plurality of bone storage holes on the third outer peripheral surface. Along the same virtual vertical line between the fifth outer peripheral surface and the sixth outer peripheral surface, the plurality of bone storage holes on the fifth outer peripheral surface correspond one to one with the plurality of bone storage holes on the sixth outer peripheral surface.
10. The spinal surgery device according to claim 9, wherein: The individual bone storage holes on the second peripheral surface and the individual bone storage holes on the third peripheral surface are connected via a first common hole located between the individual bone storage holes on the second peripheral surface and the individual bone storage holes on the third peripheral surface along the virtual horizontal line. The individual bone storage holes on the fifth peripheral surface and the individual bone storage holes on the sixth peripheral surface are connected via a second common hole located between the individual bone storage holes on the fifth peripheral surface and the individual bone storage holes on the sixth peripheral surface along the virtual vertical line.
11. The spinal surgery device according to claim 10, wherein: A plurality of first common holes or second common holes are formed between the second outer peripheral surface, the third outer peripheral surface, the fifth outer peripheral surface, and the sixth outer peripheral surface and are isolated. The first common hole intersects the second common hole between the second outer peripheral surface, the third outer peripheral surface, the fifth outer peripheral surface, and the sixth outer peripheral surface.
12. The spinal surgery device according to claim 9, wherein: The fifth outer peripheral surface has two first sawtooth tracks along the left side and the right side of the intervertebral fusion prosthesis. The sixth outer peripheral surface has two second zigzag tracks along the left and right peripheries of the intervertebral fusion prosthesis.
13. The spinal surgery device according to claim 12, wherein: The fifth outer peripheral surface has a plurality of bone storage holes between the two first sawtooth tracks. The sixth outer peripheral surface has a plurality of bone storage holes between the two second serrated tracks.
14. The spinal surgery device according to claim 12, wherein: The fifth and sixth outer peripheral surfaces have a large bone storage hole between the abutting portion and the connecting portion, which penetrates the fifth and sixth outer peripheral surfaces to expose the interior of the bone fusion portion. In the fifth outer peripheral surface, a bone storage hole is provided between each first sawtooth track and the large bone storage hole. The sixth outer peripheral surface has a bone storage hole between each second sawtooth track and the large bone storage hole.
15. The spinal surgery device according to claim 3, wherein When two first sawtooth tracks are formed on both side edges of the fifth outer peripheral surface and two second sawtooth tracks are formed on both side edges of the sixth outer peripheral surface along the length direction of the fifth outer peripheral surface and the sixth outer peripheral surface, In the first peripheral surface or the fourth peripheral surface, The height of the second outer peripheral surface is smaller than the height of the third outer peripheral surface. When the position of the second outer peripheral surface is lower than the position of the third outer peripheral surface, An angle of 6° to 12° is formed between a vertical line passing through the center of the first outer peripheral surface or the fourth outer peripheral surface and an oblique line connecting the two first or second sawtooth tracks.
16. The spinal surgery device according to claim 3, wherein: The height of the second or third outer peripheral surface is in the range of 9 mm to 13 mm in the central area of the second or third outer peripheral surface. The length of the fifth or sixth outer peripheral surface is in the range of 40 mm to 50 mm between the first outer peripheral surface and the second outer peripheral surface. The width of the fifth or sixth outer peripheral surface is in the range of 16 mm to 22 mm in the central region of the fifth or sixth outer peripheral surface.
17. The spinal surgery device according to claim 2, wherein: The docking portion, the bone fusion portion and the connecting portion include titanium or polyetheretherketone.
18. The spinal surgery device according to claim 1, wherein When the holding tube has two clamps and an entry portion along a straight line and the threaded portion of the coupling rod and the sliding portion of the guide tube are exposed between the two clamps through the entry portion, and the intervertebral fusion prosthesis spirally coupled to the threaded portion is clamped between the two clamps, The intervertebral guide includes: a column-shaped adjustment operating portion located outside the patient's body; an adjustment support portion, located on the adjustment operation portion and located around the incision site of the body; and adjusting the tunnel portion, passing through the incision portion of the body and reaching the area between the two vertebrae, The adjustment tunnel portion receives the intervertebral fusion prosthesis, the two clips and the entry portion on the adjustment support portion.
19. The spinal surgery device according to claim 18, wherein The adjustment support portion forms a main body near the adjustment operation portion and is divided into two armrests at a position away from the adjustment operation portion, and has a bent portion and a bracket sequentially located on the individual armrests along the length direction of the individual armrests. When the bracket is pressed by the two clips and the entry portion, the height of the bent portion changes along the length direction of the individual handrail.
20. The spinal surgery device according to claim 18, wherein The adjustment support portion forms a main body near the adjustment operation portion and is divided into two armrests at a position away from the adjustment operation portion, and has a bracket in each armrest that contacts the adjustment tunnel portion. When the bracket is pressed by the two clips and the entry portion, the individual armrests are unfolded at a right angle in the longitudinal direction of the individual armrests.
21. The spinal surgery device according to claim 18, wherein When the adjustment support portion forms a main body near the adjustment operation portion and is divided into two armrests at a position away from the adjustment operation portion, The above-mentioned regulating tunnel part includes: an access channel, inserted into and fixed to the two armrests, and extending in a direction away from the two armrests; and The entrance and exit passage is formed integrally with the entrance and exit passage on the opposite side of the individual handrails, and its width gradually decreases relative to the width of the entrance and exit passage.
22. The spinal surgery device according to claim 21, wherein: The inlet and outlet passage has two inlet and outlet guide blades fixed to the two handrails, bent toward the inside of each handrail at the lower side and the upper side. The inlet and outlet passage has an inlet and outlet guide vane and is bent toward a central axis between two of the inlet and outlet guide vanes.
23. The spinal surgery device according to claim 21, wherein: As for the above-mentioned access channel and the above-mentioned in-and-out channel, when the above-mentioned coupling rod and the above-mentioned entry portion move between the two above-mentioned clamps, the above-mentioned intervertebral fusion prosthesis, the two above-mentioned clamps and the above-mentioned entry portion are accommodated in the above-mentioned access channel and the above-mentioned in-and-out channel. The intervertebral fusion prosthesis is introduced between the two vertebrae through the inlet and outlet channel and the two clamps.
24. The spinal surgery device according to claim 23, wherein: In order to make the intervertebral fusion prosthesis form a "cross" shape between the two vertebrae and the spinal cord, The threaded portion of the coupling rod is separated from the thread groove of the intervertebral fusion prosthesis between the two vertebrae. In the sliding portion, one of the two anti-rotation protrusions is separated from the intervertebral fusion prosthesis, and the intervertebral fusion prosthesis is rotated relative to the spinal cord between the two vertebral bodies by the remaining anti-rotation protrusion.
Citation Information
Patent Citations
Intervertebral fusion device and installation tool thereof
CN104116552A
Implant delivery systems, devices, and methods
US20170252028A1
KR20190056085A