TW201800062A - Connecting rod typed vertebral body expanding and fixing brace and operation tool thereof characterized by making two supporting plates expand or contract. Therefore, when in the contraction state, the implant surgery can be carried out conveniently, and after implantation, the expending angle of the supporting plates can be adjusted - Google Patents

Abstract

The present invention relates to a connecting rod typed vertebral sbody expanding and fixing brace mainly comprising a brace head, a screw rod, a pushing block, two supporting plates, and two supporting arms. Wherein the brace head is penetratedly equipped with a through hole; the screw rod penetrates the through hole of the brace head and comprises a head end and a screw thread section; the pushing block is penetratedly equipped with a screw hole, and the screw thread section of the screw rod can penetrate and be screwed into the screw hole; two supporting plates respectively use one end thereof to hingedly connect to the corresponding side of the brace head; each supporting arm comprises a first end and a second end; the first ends of two supporting arms are respectively connected to the pushing block; and the second ends of two supporting arms are respectively connected to two supporting plates. By rotating the screw rod, the pushing block can move in the screw thread section so as to drive two supporting arms to make two supporting plates expand or contract. When in the contraction state, the implant surgery can be carried out conveniently; and after implantation, the expending angle of the supporting plates can be adjusted. Therefore, the effect of the spine correction can be achieved.

Description

Connecting rod type expanded vertebral body fixing bracket and operation tool thereof

The invention relates to a connecting rod type expanded vertebral body fixing bracket and an operating tool thereof, particularly to a connecting rod type expanding vertebral body fixing bracket which is implanted between adjacent vertebral bodies or vertebral bodies of a human spine to support the vertebral body. And its operating tools.

Among the conventional fixed brackets currently on the market to support the vertebral body of the human spine are known as: Ospheris Spinal Fracture Reconstruction System manufactured by ALPATEC SPINE INC. (Ministry of Health Medical Instrument No. 026334), It is used to provide internal fixation and stabilization of the vertebral body through an implant. The implant is made of titanium alloy and has a mesh structure. The mechanical structure is used to open and expand the filling material. However, this fixed bracket is only suitable for internal support of the vertebrae. Due to the large gap of the mesh structure after expansion, the filling material will flow around, so it is not suitable for intervertebral support. Moreover, relying solely on the mesh structure, the support strength is limited, and it cannot be supported at a specific angle with a single side tilt.

In addition, check US Patent Publication No. US 2012071977 A1 "Apparatus for Bone Restoration of the Spine and Methods of Use", which discloses an expandable implant that can be used by Insert into the ridge Inside the vertebral body (as shown in Figures 24 to 29 of the patent), or between two vertebrae (as shown in Figure 9 of the patent). However, this implant relies solely on a mechanical support structure, which may cause insufficient support strength if it is used for a long time. Moreover, the support structure of the implant is parallel and vertical, and it cannot be tilted unilaterally. Specific angle support adjustment.

Furthermore, check China Patent Publication No. 200743485 "Expandable Spine Repair Device", which discloses a device that can correct and repair spinal fractures or deformations. Similarly, the device only supports by mechanical structure, and it also belongs to parallel up and down, and it can not support the specific angle of the unilateral tilt adjustment.

In addition, check Chinese Patent Bulletin No. 585091 "An intervertebral support reduction device", which discloses that a plurality of internal and external concave and convex folded structures are used to support the two vertebrae. However, this reset device obviously cannot be filled with filler to strengthen the support strength. Because the gap between the folded structures is large, the slurry-like filler will flow around. In addition, this resetter can't adjust the specific angle for unilateral tilt.

The invention provides a connecting rod type expanded vertebral body fixing bracket and an operation tool thereof, which can be implanted between adjacent vertebral bodies of a human spine or inside the vertebral body, and can be used to adjust the angle of a single side inclined support. In addition, additional fillers can be added to increase support strength.

In addition, by using the connecting rod type expanded vertebral body fixation bracket of the present invention, the deformed or damaged vertebral curve and vertebral body can be restored and expanded. At the same time, a filler injection hole is provided to improve the traditional fixation. Disadvantages of the stent, increase the convenience of surgery, and the surgical wound is small, can be increased Quick wound healing.

To achieve the above object, the present invention relates to a connecting rod type expanded vertebral body fixation stent, which mainly includes: a stent head, which is provided with a through hole therethrough; a screw, which passes through the through hole of the stent head, and the screw includes a head end, and A threaded section; a push block provided with a screw hole penetrating therethrough, and the threaded section of the screw threaded through and screwed into the screw hole; two brace plates, one end of which is hinged to the corresponding two sides of the bracket head respectively; and two braces Each arm includes a first end and a second end, the first ends of the two support arms are respectively connected to the pushing block, and the second ends of the two support arms are respectively connected to the two support plates; , The screw can be rotated to move the push block to the threaded section, thereby driving the second support arm to stretch or contract the second support plate.

According to this, the present invention can freely adjust the expansion angle or shrink the two stent according to different requirements by the design of the above-mentioned link-type expansion structure. For example, when performing surgical implantation between vertebral bodies or vertebral bodies, the two stent is used. The plate is carried out in a fully condensed state, occupying a small cross-sectional area, so the surgical wound is small, which can accelerate the recovery time of the patient. On the other hand, after implantation, the screw is rotated according to the support angle required by the patient to adjust the extension angle. The extension angle of the expansion structure of the present invention can be adjusted according to actual needs, and is not particularly limited. It can be 0 ° or more and 180 ° or less, preferably 40 ° or less, such as about 5 °, 8 °, 10 °, 20 °, or 40 °.

Preferably, the rod-type expanded vertebral body fixation bracket of the present invention may further include a grouting bag having an opening; the grouting bag may at least partially cover the two supporting plates, the two supporting arms, the pushing block, the stent head, And screw, and the opening can be fixed to the holder head. According to the invention, the filling material can be filled in the grouting bag through the grouting bag, and the filling material filled in the grouting bag will not be filled. Leakage out of the vertebral body, the filler can further increase the support strength after curing.

In addition, the present invention provides a connecting rod type expanded vertebral body fixation stent, which may further include: a set of rings that tie the ring bundle and fix the opening of the grouting bag on the stent head. In other words, the present invention can tightly open the grouting bag by means of a collar, so as to stably and solidly store the filling material in the grouting bag without leaking through the opening.

Preferably, in the present invention, a connecting rod type expanded vertebral body fixing bracket, wherein the grouting bag may be made of a material with high biocompatibility. The material with high biocompatibility of the present invention is not particularly limited, as long as it is a material that can be implanted in a living body and has a high degree of compatibility with the living body without causing rejection, for example, polyparaphenylene Ethylene formate (PET), polyetheretherketone (PEEK), resin blends containing these, and even titanium or other equivalent materials are all acceptable.

In addition, at least one of the two supporting plates, the two supporting arms, the pushing block, the stent head, the screw, and the collar of the connecting rod type expanded vertebral body fixing bracket of the present invention can also be made of high strength and high biocompatibility. Materials such as titanium, stainless steel, alloys containing these, or other equivalent materials may be used.

In addition, in the present invention, a connecting rod type expanded vertebral body fixation stent, wherein the stent head can be further provided with a grouting hole; the filling material can be filled into the grouting bag through the grouting hole. The filling material of the present invention is not particularly limited, as long as it is generally widely used for filling the intervertebral body or the intervertebral body of a human spine, and it is preferably a fragment of autograft or allograft Bone graft, orthopedic substitute substitutes), bone cement, bone meal, polymethyl methacrylate (PMMA) and / or mixtures thereof, compositions, composites and the like.

Furthermore, in the present invention, a connecting rod type expanded vertebral body fixing bracket, wherein the first end and the second end of each support arm can be respectively provided with a convex post, the push block can be provided with two jacks, and each support plate A receiving slot can be provided; the protruding posts on the first end of the two supporting arms are respectively inserted in the two jacks of the push block and can rotate freely; the protruding posts on the second end of the two supporting arms respectively accommodate the receiving slots of the two supporting plates. And can rotate freely.

Preferably, in the present invention, a connecting rod type expanded vertebral body fixation bracket, wherein each support plate includes a plurality of through holes and a sawtooth surface, and the sawtooth surface is used to contact the surface of the vertebral body. According to this, by providing a plurality of through holes in each support plate, the present invention enables the filling flow to pass through the plurality of through holes during filling of the filling material, thereby completing the grouting procedure quickly and uniformly. In addition, the serrated surface of each support plate can increase the friction between the contact surface of the grouting bag and the inner surface of the grouting bag, and the surface of the vertebral body in contact, thereby making the grouting bag and the fixed bracket difficult. Offset.

In order to achieve the above object, the present invention provides an operating tool for a connecting rod type expanded vertebral body fixing bracket, which mainly includes: a set of tubes having a stent head connecting portion, a clamping portion, an extended grouting hole, and an extended through hole Among them, the stent head connection part can be used to connect to the stent head of the connecting rod-type expanded vertebral body fixed stent, the extended grouting hole can be connected to the grouting hole of the stent head, and the extended through hole can be connected to the through hole of the stent head; a grouting tube, It passes through the extension grouting hole and is coupled to the grouting hole of the bracket head; an adjustment rod passes through the extension through hole and is coupled to the head end of the screw; and a fixed rotating head, which The clamping part is coupled to the clamping part of the casing, and the clamping part is fastened to the grouting tube.

According to this, the present invention can smoothly couple the grouting tube and the adjustment rod to the connecting rod-type expanded vertebral body fixing bracket by using the sleeve of the operating tool; that is, the adjustment rod and the grouting tube are respectively extended through the extension channel. The hole and the extended grouting hole are respectively coupled to the head end of the screw and the grouting hole of the bracket head. Therefore, in the present invention, the screw can be moved to the thread section by operating the adjusting rod to rotate the screw to drive the second support arm to stretch or contract the second support plate; in addition, the grouting tube can be used to perform grouting and the filling material The slurry can enter the grouting bag through the grouting tube and grouting hole.

Preferably, in the present invention, an operating tool for a connecting rod type expanded vertebral body fixing bracket, wherein the grouting tube may include a threaded end, and an internal thread may be opened in the grouting hole of the stent head; the threaded end of the grouting tube may be screwed Internal thread in grouting hole. According to this, by screwing the grouting tube into the grouting hole of the stent head, in addition to fixing the grouting tube and the stent head, the stent head can be fixed on the sleeve to facilitate the operation.

In addition, the present invention provides an operating tool for a connecting rod type expanded vertebral body fixation bracket, which further includes a joint. The joint includes a fixed knob and is provided with an axial hole and a radial hole. The axial hole can be sleeved on the grouting tube. On, the fixed knob is screwed into the radial hole and the grouting tube is fastened. According to this, the present invention can easily remove the grouting pipe which is difficult to remove after the grouting operation by fastening the joint of the operation tool to the grouting pipe.

In the following, to make the description more concise, the connecting rod type expanded vertebral body fixation bracket is simply referred to as "stent".

1‧‧‧ connecting rod type expansion vertebral body fixing bracket

2‧‧‧ bracket head

21‧‧‧through hole

22‧‧‧ Grouting hole

23‧‧‧ Collar

3‧‧‧ Screw

31‧‧‧ head end

32‧‧‧Thread Section

4‧‧‧ push block

41‧‧‧Screw holes

42‧‧‧jack

5‧‧‧ stay

50‧‧‧ rib

51‧‧‧container

52‧‧‧through hole

53‧‧‧Serrated surface

6‧‧‧ Arm

61‧‧‧ the first end

62‧‧‧ the second end

611,621

7‧‧‧ grouting bag

71‧‧‧ opening

M‧‧‧Operation tools

8‧‧‧ Casing

81‧‧‧ bracket head connection

82‧‧‧Clamping section

83‧‧‧Extend grouting hole

84‧‧‧Extended through hole

91‧‧‧ Grouting tube

911‧‧‧Threaded End

92‧‧‧Adjustment lever

93‧‧‧Fixed rotor

94‧‧‧ connector

940‧‧‧Fixed knob

941‧‧‧Axial hole

S‧‧‧vertebral body

FIG. 1 is an exploded perspective view of a bracket according to a preferred embodiment of the present invention.

FIG. 2A is a perspective view of a bracket according to a preferred embodiment of the present invention.

FIG. 2B is a perspective view of the bracket of another preferred embodiment of the present invention from another angle.

FIG. 3 is an exploded perspective view of an operating tool according to a preferred embodiment of the present invention.

FIG. 4 is a schematic diagram of a bracket and an operating tool according to a preferred embodiment of the present invention.

5 is a schematic side view of a bracket and a grouting bag according to a preferred embodiment of the present invention.

FIG. 6 is a schematic diagram of a grout tube removal operation according to a preferred embodiment of the present invention.

FIG. 7 is a schematic view of a stent arranged vertically between adjacent vertebral bodies according to a preferred embodiment of the present invention.

FIG. 8 is a schematic plan view of a stent arranged horizontally between adjacent vertebral bodies according to a preferred embodiment of the present invention.

FIG. 9A is a schematic view of a stent arranged vertically in a vertebral body according to a preferred embodiment of the present invention.

FIG. 9B is a schematic view of a stent arranged horizontally in a vertebral body according to a preferred embodiment of the present invention.

Before the rod-type expanded vertebral body fixing bracket and the operation tool of the present invention are described in detail in this embodiment, it should be particularly noted that in the following description, similar elements will be represented by the same element symbols. Moreover, the drawings of the present invention are only for illustrative purposes, they are not necessarily drawn to scale, and not all details are necessarily presented in the drawings.

Please refer to FIG. 1, which is an exploded perspective view of a bracket according to a preferred embodiment of the present invention. As shown in the figure, a connecting rod type extended vertebral body fixation bracket 1 in this embodiment mainly includes: a stent head 2, a screw 3, a push block 4, two stay plates 5, two stay arms 6, and a grout. Bag 7, and a set of rings 23. Among them, the bracket head 2 is provided with a through hole 21 and a grouting hole 22 therethrough, and the screw 3 includes a head end 31 and a threaded section 32, and the screw 3 passes through the through hole 21 of the bracket head 2 and the head end 31 is located at The through hole 21 of the bracket head 2.

However, in this embodiment, the main components including the stent head 2, the screw 3, the push block 4, the support plate 5, the support arm 6, and the collar 23 are made of titanium alloy, which has high strength characteristics, and It is a material with high biocompatibility, and it will not cause rejection with internal tissues.

In addition, the pushing block 4 has a threaded hole 41 passing therethrough, and the screw section 32 of the screw 3 passes through and is screwed into the screw hole 4; in other words, when the screw 3 is rotated, the pushing block 4 can be moved to the screw section of the screw 3 32. Also, as shown in the two supporting plates 5, one end of each supporting plate 5 is hinged to the corresponding side of the bracket head 2, so the other end can swing freely. In addition, each support plate 5 includes a plurality of through holes 52 and a sawtooth surface 53. The sawtooth surface 53 is used to contact the surface of the vertebral body, and can produce anti-slip effect.

Furthermore, as shown in the figure, the two support arms 6 each include a first end 61 and a second end 62, and the first ends 61 of the two support arms 6 are connected respectively. To the pushing block 4, and the second ends 62 are respectively connected to the two supporting plates 5. To further explain, the first end 61 and the second end 62 of each support arm 6 in this embodiment are respectively provided with a convex post 611, 621, and the push block 4 is provided with two insertion holes 42, and each support plate 5 is provided with a The receiving groove 51 is formed by opening all grooves in the reinforcing ribs 50 on the back of the supporting plate 5. With this, two The projections 611 of the first end 61 of the support arm 6 are respectively inserted in the two jacks 42 of the push block 4 and can rotate freely, and the projections 621 of the second end 62 of the two support arm 6 respectively accommodate the two support plates 5 The receiving groove 51 can also rotate freely.

Secondly, please refer to FIG. 2A and FIG. 2B. FIG. 2A is a perspective view of the bracket of a preferred embodiment of the present invention, and FIG. 2B is a perspective view of the bracket of another preferred embodiment of the present invention from another angle. The structure and connection relationship of the constituent elements are specifically omitted in FIG. 2A and FIG. 2B.

When the stent of this embodiment is implanted during surgery, the pushing block 4 is located at the extreme end of the threaded section 32, so that the two supporting plates 5 are in a fully contracted state (not shown). When the stent is implanted in a predetermined position, as shown in FIGS. 2A and 2B, the screw 3 is rotated to move the pusher block 4 on the threaded section 32 toward the head end 31. At this time, the two supporting arms 6 connected to the pushing block 4 are also driven accordingly, so that the two supporting plates 5 are stretched to the required stretching angle. In the present embodiment, when the pushing block 4 moves upward in the innermost part of the thread section 32, the maximum stretching angle is about 40 °.

It should be particularly noted that if the combination of a support arm 6 and a support plate 5 is regarded as a set of spreading members, although the present embodiment presents the cooperation of two sets of spreading members, the present invention does not adopt this. Limited. In other embodiments of the present invention, the number of spreading members can be further expanded, such as the cooperation of three sets of spreading members or the cooperation of four sets of spreading members, and the configuration method can be the same as that of the above embodiment. The opening members can be spread out at equal angles of 120 degrees each, that is, the included angle between the adjacent support arms 6 is 120 degrees; the four sets of spreading members can be spread out at equal angles of 90 degrees each, that is, between the adjacent support arms 6 The included angle is 90 degrees, and so on. To sum up, although this embodiment uses the two supporting plates 5 to spread out in a split shape, the supporting structure of multiple supporting plates 5 should be Covered by the scope of the present invention.

Please refer to FIG. 3 and FIG. 4. FIG. 3 is an exploded perspective view of an operating tool according to a preferred embodiment of the present invention, and FIG. 4 is a schematic diagram of a support and operating tool according to a preferred embodiment of the present invention. As shown in FIG. 3, the operation tool M of the connecting rod-type expanded vertebral body fixing bracket in this embodiment mainly includes: a set of tubes 8, a grouting tube 91, an adjustment rod 92, a fixed rotor 93, and a joint 94 . The cannula 8 includes a stent head connection portion 81, a clamping portion 82, an extended grouting hole 83, and an extended through hole 84, wherein the stent head connection portion 81 is connected to the connecting rod type expanded vertebral body fixation of this embodiment. Bracket head 2 of the bracket 1.

The following briefly describes the implementation method of the rod-type expanded vertebral body fixing bracket 1 and its operation tool M. First, first connect the bracket and the operating tool M. First, the extension grout hole 83 is aligned to communicate with the grout hole 22 of the bracket head 2 and the extension through hole 84 is aligned to communicate with the through hole 21 of the bracket head 2. The grouting tube 91 is threaded through the extending grouting hole 83 and screwed to the grouting hole 22 of the bracket head 2. Wherein, the grouting pipe 91 of this embodiment includes a threaded end 911, and an internal thread is formed in the grouting hole 22 of the bracket head 2; and the threaded end 911 of the grouting pipe 91 is screwed to the internal thread in the grouting hole 22. Next, the fixed rotor 93 is coupled to the clamping portion 82 of the sleeve 8, and the fixed rotor 93 is rotated to fasten the clamping portion 82 to clamp the grouting tube 91. At this time, the bracket has been connected with the bracket head of the sleeve 8. The connection portion 81 is tightly engaged.

Then, the operation can be performed, and the stent is implanted between the vertebral body or the vertebral body. After the stent is implanted in the predetermined position, the adjustment rod 92 is passed through the extension through hole 84 and coupled to the head end 31 of the screw 3, and the operation can be performed. Adjust the action. Please refer to FIG. 1, FIG. 2A, FIG. 2B, and FIG. 3 at the same time. The end of the adjusting rod 92 of this embodiment is provided with a linear projection, which can be coupled to the head end 31 of the screw 3. In the shape of a groove, when the adjusting rod 92 is rotated, the screw 3 is also rotated, which in turn drives the push block to move and stretches the two supporting plates 5 to support and restore the original height of the vertebral body.

It should be particularly noted that, after the adjustment of the supporting angle of the stent is completed, this embodiment further uses a filler to strengthen the supporting strength. This technical means will be described in detail below.

Please refer to FIG. 5 again, which is a schematic side view of a bracket and a grouting bag according to a preferred embodiment of the present invention. As shown in FIG. 1, the grouting bag 7 of this embodiment has an opening 71 and partially covers the two supporting plates 5, the two supporting arms 6, the pushing block 4, the bracket head 2, and the screw 3. Moreover, the opening 71 is fixed to the bracket head 2, and a set of rings 23 is used to bind and fix the opening 71 of the grouting bag 7 on the bracket head 2.

According to this, after the adjustment of the brace's supporting angle is completed, the grouting step of the filling material is performed, which is mainly grouted through the grouting tube 91 in the operation tool M, and at least partially when the filling material fills the grouting bag 7 When curing, it is preferable to remove the grouting tube 91 after the filler is completely cured.

In this embodiment, the grouting bag 7 is made of PET, which is a material with high biocompatibility, so it is difficult to produce a rejection phenomenon with the internal tissues. In addition, the filler is a bone cement, but not limited to this. Other bone fragments such as autogenous bone or allogeneous bone, orthopedic substitutes, bone meal, polymethyl methacrylate and / or mixtures, compositions, composites Things can be applied.

In the present embodiment, during the grouting operation, the bone cement system first flows through the grouting tube 91 and finally flows into and fills the grouting bag 7, wherein the supporting plate 51 The multiple through-holes 52 on the surface also provide a good flow path for the slurry. Here, it should be noted that in different embodiments, it is not necessary to completely fill the grouting bag 7 with the bone cement. The pressure of the grouting should be adjusted according to the actual extension angle of the stent to achieve the best support. effect.

Please refer to FIG. 3 and FIG. 6 together. FIG. 6 is a schematic diagram of a grout tube removal operation according to a preferred embodiment of the present invention. After the grouting is completed, there is solid bone cement in the grouting tube 91 and the screw joint with the grouting hole 22, so the grouting tube 91 may sometimes be difficult to remove from the casing 8. Therefore, in this embodiment, the operation tool M is specially designed with a joint 94, which is mainly used to assist in removing the grouting pipe 91.

To further explain, as shown in FIG. 3, the joint 94 of this embodiment includes a fixed knob 940 and an axial hole 941 and a radial hole. As shown in FIG. 6, in this embodiment, when the grouting pipe is pulled out, the axial hole 941 is sleeved on the grouting pipe 91, and the fixing knob 940 is screwed to the radial hole and the grouting pipe 91 is fastened. Then, by turning the joint 94, the grouting tube 91 can be easily detached from the grouting hole 22 of the stent head 2, and the stent can also be detached from the cannula 8 to complete the stent implantation operation.

The application range of the rod-type expanded vertebral body fixing bracket 1 of the present invention is briefly introduced below. Please refer to FIG. 7, FIG. 8, FIG. 9A, and FIG. 9B at the same time. FIG. 7 is a schematic view of a vertical arrangement of a stent between adjacent vertebral bodies according to a preferred embodiment of the present invention. FIG. 8 is a preferred embodiment of the present invention. A schematic view of a horizontal arrangement of a stent between adjacent vertebral bodies. FIG. 9A is a schematic view of a stent arranged vertically in a vertebral body according to a preferred embodiment of the present invention. FIG. 9B is a horizontal configuration of a stent in a preferred embodiment of the present invention. Schematic view of the vertebral body.

As shown in FIG. 7, the stent of this embodiment can be applied to Intervertebral disc loss, loss, or spinal curvature caused by wear of the vertebral body S or bone loss, and through the vertical installation of the stent of the present invention, the intervertebral height can be appropriately adjusted in response to the spinal bending angle.

In addition, the bracket of this embodiment can also be installed in a horizontal manner. As shown in FIG. 8, it is a plan view of the vertebral body S. In this embodiment, the stent is arranged in a horizontal direction, and its support is like a fan, which can increase the support surface of the stent. According to this, this configuration method only needs a single support to achieve sufficient support effect, and does not need to adopt vertical configuration like the conventional technology, and requires two supports to support.

Moreover, the stent of this embodiment can also be installed inside the vertebral body. In detail, the vertebral body S is hollowed out due to bone loss in common elderly people. However, the stent of the present invention can strengthen the support strength of the vertebral body S, that is, it can be directly implanted inside the vertebral body S, and can be adopted in the vertical configuration according to actual needs. Inside the vertebral body S, as shown in FIG. 9A; or horizontally, inside the vertebral body S, as shown in FIG. 9B.

The above-mentioned embodiments are merely examples for convenience of explanation, and the scope of the claims of the present invention shall be based on the scope of the patent application, rather than being limited to the above-mentioned embodiments.

1‧‧‧ connecting rod type expansion vertebral body fixing bracket

2‧‧‧ bracket head

21‧‧‧through hole

22‧‧‧ Grouting hole

23‧‧‧ Collar

3‧‧‧ Screw

31‧‧‧ head end

32‧‧‧Thread Section

4‧‧‧ push block

41‧‧‧Screw holes

42‧‧‧jack

5‧‧‧ stay

50‧‧‧ rib

51‧‧‧container

52‧‧‧through hole

53‧‧‧Serrated surface

6‧‧‧ Arm

61‧‧‧ the first end

62‧‧‧ the second end

611,621

7‧‧‧ grouting bag

71‧‧‧ opening

Claims (10)

A connecting rod type expanded vertebral body fixing bracket includes: a stent head provided with a through hole penetrating therethrough; a screw threaded through the through hole of the stent head; the screw including a head end and a threaded section; a push A block is provided with a screw hole penetrating therethrough, the threaded section of the screw threaded through and screwed into the screw hole; two brace plates, one end of which is hinged to the corresponding two sides of the bracket head respectively; and two braces, each A support arm includes a first end and a second end, the first ends of the two support arms are respectively connected to the pushing block, and the second ends of the two support arms are respectively connected to the two support plates; Wherein, the screw is rotated to move the pushing block to the thread section, and then the two supporting arms are driven to stretch or contract the two supporting plates. For example, the connecting rod-type expanded vertebral body fixation bracket of claim 1, further comprising a grouting bag having an opening; the grouting bag is at least partially covering the two supporting plates, the two supporting arms, the pushing block, the The bracket head and the screw, and the opening is fixed to the bracket head. For example, the rod-type expandable vertebral body fixation bracket of claim 2, further comprising: a set of rings that binds the ring and fixes the opening of the grouting bag on the head of the stent. For example, the rod-type expandable vertebral body fixing bracket of claim 3, wherein the grouting bag is made of a material with high biocompatibility. For example, the connecting rod-type expanded vertebral body fixation stent of claim 4, wherein the head of the stent is further provided with a grouting hole; a filling material is filled through the grouting hole; Fill into the grouting bag. For example, the connecting rod-type expanded vertebral body fixing bracket of claim 1, wherein the first end and the second end of each support arm are respectively provided with a convex post, the push block is provided with two jacks, and each support plate A receiving slot is provided; the protrusions on the first ends of the two support arms are respectively inserted in the two jacks of the push block and can rotate freely; The convex posts respectively receive the receiving grooves of the two supporting plates and can rotate freely. The connecting rod-type expanded vertebral body fixation stent of claim 1, wherein each support plate includes a plurality of through holes and a sawtooth surface, and the sawtooth surface refers to a surface contacting the vertebral body. An operating tool for a connecting rod type expanded vertebral body fixation stent, comprising: a set of tubes having a stent head connecting portion, a clamping portion, an extended grouting hole, and an extended through hole, wherein the stent head connecting portion is The extension grouting hole for connecting to the stent head of the connecting rod type expanded vertebral body fixation stent as claimed in claim 4, the extended grouting hole is connected to the grouting hole of the stent head, and the extended through-hole is connected to the through-hole of the stent head. A grouting tube that passes through the extension grouting hole and is coupled to the grouting hole of the bracket head; an adjustment rod that passes through the extension through hole and is coupled to the head end of the screw; and A fixed rotor is coupled to the clamping portion of the casing, and the clamping portion fastens the grouting tube. For example, the operation tool of the connecting rod-type expanded vertebral body fixing bracket of claim 8, wherein the grouting tube includes a threaded end, and the grouting hole of the stent head is provided with an internal thread; the threaded end of the grouting tube is screwed on The grouting hole The internal thread. For example, the operation tool of the rod-type expanded vertebral body fixation bracket of claim 8 further includes a joint including a fixed knob and an axial hole and a radial hole. The axial hole is sleeved on On the grouting pipe, the fixing knob is screwed to the radial hole and fastens the grouting pipe.