TW202011903A - Expandable and adjustable implantation device capable of making the vertebral body deformed and restored to the original angle thereof - Google Patents

Abstract

The invention provides an expandable and adjustable implantation device, which uses a bracket to be expanded in the vertebral bone and applies force to the upper and lower vertebral endplates to make the vertebral body deformed and restored to the original angle thereof. Supporting arms of the bracket are respectively disposed at two ends of the bracket to provide firm supports. The invention further provides a hollow part disposed to the bracket. The hollow part can reduce the applied force required for being expanded, so that the bracket is easier to expand in the vertebral bone to apply force to the upper and lower vertebral endplates to make the vertebral body deformed and restored to its original angle.

Description

Expandable and adjustable implant device

The invention relates to an expandable and adjustable implantation device, in particular to an expandable and adjustable implantation device for vertebrae and its structure.

With the rapid development of science and technology, the continuous advancement of medical technology and the continuous expansion of knowledge, many people have heard how to treat bone back mud to reduce the severe back pain caused by vertebral compression fractures. This technology has surprisingly developed so far It is the use of the metal dome made of metal to support the deformed spine, and the bone mud is poured into the spine.

The spine is composed of a series of vertebrae, which mainly bear the changes of human body weight and strength. Among them, the lower thoracolumbar vertebral body is the place that bears the most of these forces, and it is also the most common place for vertebral compression fractures. The common causes of spinal fractures are roughly divided into acute external injury, osteoporosis, pathological fractures and so on.

After the vertebral body fracture, the spinal nerve will be compressed or damaged due to the deformation of the vertebral body, causing severe pain. The old minimally invasive treatment method is simply perfusion of bone cement in the vertebral body to fix the fractured vertebral body. Solve the pain caused by the instability of the vertebral body caused by the fracture. The vertebral body reduction technique is to reduce the collapsed vertebral body in addition to fixing the fracture, so as to restore the normal lumbar physiophysis of the human lumbar spine. This technique is to extend the implant or tool into the vertebral body and apply force to cause the collapse After the height of the vertebral body rises to the height of the original vertebral body, it is fixed with bone cement.

Osteoporosis is already the second most important epidemic in the world, second only to cardiovascular disease. The consequence is the occurrence of fractures in various parts, among which the vertebral body and hip fractures are the most severe, and more than 100,000 people in Taiwan cause spinal fractures every year due to osteoporosis. The treatment of vertebral fractures is currently based on vertebroplasty and balloon dilatation. Vertebroplasty is the injection of bone mud into the damaged vertebral body through a metal channel to fix the fracture of the vertebral body, increase the stability of the spine, and reduce pain. In balloon dilatation, a curled balloon is stretched into the vertebral body and then infused with physiological saline to inflate it, reducing the spine. When the correction is complete, the balloon is withdrawn and bone cement is injected to maintain the spine's strength.

Both procedures have their shortcomings. Vertebroplasty is easy to leak during the bone cement injection process and balloon dilatation is easy to collapse again after the balloon is withdrawn during the operation and before the bone cement is infused. In the most recent technology, a new type of expandable spinal implant has emerged. This implant can restore the deformed vertebral body to its original height and maintain it. Then the bone cement is injected from the end of the implant because the implant has been propped Opening a vertebral body space can reduce the risk of leakage during bone cement perfusion, and continue to support the height of the vertebral body until the bone cement is hardened, so there will be no loss of vertebral body height during surgery.

Taking the patent US 8657832 as an example, the metal mesh bracket simply has freed up space as the main function, because the support area is only the tip portion of the deformed mesh, and the support force is very limited. Taking the patent TW I581755 as an example again, although the reset effect is good, the bracket structure is complicated and the processing is not easy, which results in high costs. And because the design structure mainly supports the center in the center, the edges of the upper and lower metal plates are seriously deformed. Support is weak.

Therefore, the present invention provides an expandable and adjustable implantation device, which uses mechanical force to expand the stent vertically in the vertebral bones. After deployment, it exerts force on the upper and lower vertebral body endplates to deform the vertebral body back to the original vertebral body height, and then reinjects After bone cement is fixed, the fractured vertebral body is restored to its original contour.

The purpose of the present invention is to provide an expandable and adjustable implantation device, which uses mechanical force to vertically expand the stent in the vertebral bones. After deployment, it exerts force on the upper and lower vertebral body endplates to deform the vertebral body back to the original vertebral body height, and Reinject bone cement and fix it to restore the original contour of the fractured vertebral body.

The purpose of the present invention is to provide an expandable and adjustable implantation device, which uses a mechanical force to vertically expand a stent provided with a hollow portion in the bone of the vertebral body, and exerts force on the end plates of the upper and lower vertebral bodies after the deployment to deform the vertebral body back to its original shape The height of the vertebral body is fixed by reinjecting bone cement to restore the original contour of the fractured vertebral body.

In order to achieve the above-mentioned purposes and effects, the present invention discloses an expandable and adjustable implant device, which includes: a support, including: an upper support member; a first bending member, the first bending member One end is connected to one end of the upper support member; a lower support member, one end of which is connected to the other end of the first bending member; and a second bending member, one end of the second bending member is connected to the other of the upper support member One end, the other end of which is connected to the other end of the lower support; a first tube, which is connected to the bracket, and one end of the first tube is connected to the first bending part; and a second tube, the second tube One end is sleeved on the first tube and interferes with each other, the other end of the second tube penetrates the second bending part; wherein, when the second tube moves, part of the second tube is removed from the first tube When being removed, the first bending member and the second bending member are simultaneously deformed to stretch the upper support member and the lower support member.

In an embodiment of the present invention, a first clamping portion of a first bending portion of the first bending member is inserted into the first tube member, and a second bending of the second bending member A second clamping block is provided in the part and inserted into the second tube.

In an embodiment of the present invention, at least one ratchet is disposed on the side of the first tube, the at least one ratchet includes at least one inclined surface, the inclined surface faces the first bending member, and the inner side of the second tube is disposed at least A buckle, the at least one buckle slides on the inclined surface, so that the at least one buckle is engaged with the at least one ratchet.

In an embodiment of the invention, at least one first outlet is provided on the side of the first tube.

In an embodiment of the present invention, the other end of the first tube is provided with a first feed port.

In an embodiment of the invention, a first duct is further included, and the first duct is disposed at the other end of the second tube.

In an embodiment of the present invention, one end of the first conduit is provided with a first feed port, which communicates with the first feed port.

In addition, the present invention discloses an expandable and adjustable implant device, which includes: a bracket including: an upper support member; a first bending member, one end of the first bending member is connected to one end of the upper support member , At least one first hollow part is provided on the side of the first bending member; one end of the lower support member is connected to the other end of the first bending member; and a second bending member, one end of the second bending member Connected to the other end of the upper support member, the other end of which is connected to the other end of the lower support member, at least a second hollow part is provided on the side of the second bending member; a first tube member, which is connected to the bracket, the One end of the first pipe is connected to the first bending piece; and a second pipe piece, one end of the second pipe piece is sleeved on the first pipe piece and interferes with each other, and the other end of the second pipe piece passes through the second bending piece Wherein; when the second tube moves, part of the second tube is moved out of the first tube, and at the same time the first bending member and the second bending member are deformed to open the upper support member And the lower support.

In an embodiment of the present invention, a first clamping portion of a first bending portion of the first bending member is inserted into the first tube member, and a second bending of the second bending member A second clamping block is provided in the part and inserted into the second tube.

In an embodiment of the present invention, at least one ratchet is provided on the side of the first tube, the at least one ratchet includes at least one inclined surface, the inclined surface faces the first bending member, and at least one is disposed inside the second tube A buckle, the at least one buckle slides on the inclined surface, so that the at least one buckle is engaged with the at least one ratchet.

In an embodiment of the invention, at least one first outlet is provided on the side of the first tube.

In an embodiment of the present invention, the other end of the first tube is provided with a first feed port.

In an embodiment of the invention, a first duct is further included, and the first duct is disposed at the other end of the second tube.

In an embodiment of the present invention, one end of the first conduit is provided with a first feed port, which communicates with the first feed port.

10‧‧‧Extended and adjustable implant device

10’‧‧‧ Compressed

100‧‧‧The first pipe fitting

110‧‧‧Fixed hole

120‧‧‧The first outlet

140‧‧‧The third outlet

160‧‧‧ratchet

162‧‧‧Vertical

164‧‧‧Bevel

180‧‧‧First inlet

20‧‧‧spine

200‧‧‧Second pipe fitting

210‧‧‧Fixed hole

240‧‧‧Snap

30‧‧‧Materials

300‧‧‧Bracket

300’‧‧‧Bracket

320‧‧‧Upper support

340‧‧‧The first bending piece

342‧‧‧The first bending part

344‧‧‧First card block

346‧‧‧The third block

348‧‧‧The first cutout

360‧‧‧Lower support

380‧‧‧The second bending part

382‧‧‧Second bending part

384‧‧‧Second card block

386‧‧‧ fourth card block

388‧‧‧Second cutout

400‧‧‧The first catheter

440‧‧‧First feeding port

Figure 1: It is a schematic structural view of the first embodiment of the present invention; Figures 2A to 2B: It is a perspective view of the parts of the first embodiment of the present invention; Figure 3: It is the first embodiment of the present invention 4A to 4D: it is a schematic diagram of the first embodiment of the invention; FIG. 5 is a schematic diagram of the second embodiment of the invention; and FIG. 6A to 6C : It is a schematic diagram of the operation of the second embodiment of the present invention.

In order for your reviewer to have a better understanding and understanding of the features and effects of the present invention, the examples and supporting descriptions are accompanied by the following description: The present invention provides an expandable and adjustable implant device that uses mechanical force The stent is vertically deployed in the bone of the vertebral body. After the deployment, the upper and lower vertebral body endplates are forced to deform the vertebral body to return to the original angle. Compared with the previous case, the support arm of the stent is located at both ends, providing strong ends It is supported, and the present invention further provides a hollow part on the bracket to make the bracket lighter in weight and easier to expand in the bone of the vertebral body. After deployment, the end plate of the upper and lower vertebral bodies is forced to deform the vertebral body back to its original angle.

Please refer to FIGS. 1 to 3 together. FIG. 1 is a schematic structural view of a first embodiment of the present invention, FIGS. 2A to 2B are perspective views of parts of a first embodiment of the present invention, and FIG. 3 is a A cross-sectional view of the first embodiment of the invention. As shown, an expandable and adjustable implant device 10 includes a first tube 100, a second tube 200, a stent 300, and a first catheter 400.

A bracket 300 of this embodiment is an integrally formed structure, which includes an upper support member 320, a first bending member 340, a lower support member 360, and a second bending member 380, one end of the first bending member 340 One end of the upper support member 320 is connected, one end of the lower support member 360 is connected to the other end of the first bending member 340, one end of the second bending member 380 is connected to the other end of the upper support member 320, and the other end is connected to the lower support member At the other end of 360, the first pipe member 100 is disposed inside the bracket 300, one end of the first pipe member 100 is connected to the first bending member 340, and one end of the second pipe member 200 is sleeved on the first pipe member 100 and interferes with each other And the other end of the second tube 200 is provided with a second bending member 380. In this embodiment, a first clamping block 344 is disposed on a first bending portion 342 of the first bending member 340, which is inserted in A second clamping block 384 is disposed on the first tube 100 and one of the second bending parts 382 of the second bending component 380, and is inserted into the second tube 200 to connect the bracket 300 with the first tube 100 and the first Two pipe fittings 200. In the present invention, at least one ratchet 160 may be disposed on the side of the first tube 100. In this embodiment, at least one ratchet 160 disposed on the side of the first tube 100 is a plurality of ratchets 160 as an example. The teeth 160 are provided with at least one inclined surface 164. In this embodiment, the ratchet teeth 160 include a vertical surface 162 and an inclined surface 164, the inclined surface 164 is connected to the vertical surface 162, and the inclined surface 164 faces the first bending member 340 The vertical surface 162 of the present invention may also be a slanted surface, the present invention is not limited thereto, and at least one buckle 240 is provided inside the second tube 200, and a first conduit 400 is provided at the other end of the second tube 200. For example, the setting method is set (as shown in Figure 2B).

Please refer to FIGS. 4A to 4D. FIGS. 4A to 4D are schematic diagrams of the first embodiment of the present invention. As shown in the figure, the present invention is sleeved on the second tube 200 by the first conduit 400, In this way, the expandable and adjustable implant device 10 is implanted into the vertebra 20, and then the first catheter 400 is pulled in the direction of the outside of the vertebra 20, and the second tube 200 screwed on it is slid on the first tube 100 to make the second The tube 200 is partially away from the first bending part 100, and the first clamping block 344 and the second clamping block 384 of the bracket 300 are respectively inserted into the two fixing holes 110 and the second tube 200 provided in the first tube 100 The second fixing hole 210 keeps the first clamping block 344 and the second clamping block 384 away from each other, and the first bending piece 340 and the second bending piece 380 connected thereto extend outward to support the upper support 320 and the lower support 360, the upper support member 320 and the lower support member 360 are unfolded in the vertebral bone 20, and the deformed vertebral bone 20 is restored to its original shape. As shown in FIG. 4D, at least one catch 240 is disposed inside the second tube 200, And engage the ratchet teeth 160, as the second tube 200 slides on the first tube 100, at least one buckle 240 expands outward, and slides over the inclined surfaces 164 of the ratchet teeth 160, The at least one buckle 240 is contracted by the at least one buckle 240 to contact the vertical surface 162, so that it can keep the second tube 200 away from the first bending member 342 and keep the upper support portion 320 and the lower support portion 360 Unfold.

In the above embodiment, the first tube 100 further includes two first discharge ports 120 and two third discharge ports 140 opposite to each other. The channel connecting the two first discharge ports 120 and the second third discharge ports 140 The connected channels are perpendicular to each other and staggered, so that the two first outlets 120 and the second third outlets 140 communicate with each other, and the first tube 100 is provided with a first inlet 180 at the other end (as shown in FIG. 1) The first feed port 180 communicates with the first feed port 440 of one of the first ducts 400 for materials to pass through.

Following the above, after the expandable and adjustable implantation device 10 is deployed in this embodiment, a material 30 (which may be medical bone cement) is added from the first catheter 400, and from the first feeding port of the first catheter 400 440 is injected into the liquid inlet 180 of the first tube 100, and then enters the vertebral bone 20 from the first material outlet 120 and the third material outlet 140 (as shown in FIG. 4C), so that the material 30 fills the spine 20.

In the above embodiment, the first conduit 400 may be provided with an internal thread and a threaded portion provided at the other end of the second tube 200, so that the first tube 400 may be screwed on the second tube 200 to move the second tube 200 Or, the first duct 400 is provided with a locking groove to engage with each other by providing a protrusion on the other end of the second pipe 200. The method of installing the first duct 400 on the second pipe 200 is only one embodiment of the present invention. It is not intended to limit the scope of implementation of the present invention, and the above method may also be fit or mesh.

Referring again to FIG. 3, as shown in the figure, the first bending member 340 of this embodiment can be provided with a third clamping block 346 relative to the first clamping block 344, which is inserted on the first tube member 100 and connected with the second bending The folding member 380 can be provided with a fourth clamping block 386 relative to the second clamping block 384, and inserted into the second tube 200, so that the first tube 100 and the second tube 200 can be more firmly fixed on the bracket 300.

The stent 300 of the implantable device 10 that can be expanded and adjusted according to the present invention is integrally formed, and the first bending member 340 and the second bending member 380 are deformed by the reverse movement of the first tube member 100 and the second tube member 200 to deform the bracket 300 The support is located at both ends of the upper and lower support members 320 and 360 to improve the support force, and the bracket is adjusted by the at least one catch 240 of the ratchet teeth 160 of the first pipe member 100 and the second pipe member 200 300 is the unfolded size, and the first tube 100 has an opening or a discharge port. In order to provide a channel for material transportation, the threaded part 220 can be connected to the first catheter 400. The threaded connection can firmly operate the operation and can also make the first The catheter 400 exits the operation area more safely and effectively.

Please refer to FIG. 5, which is a schematic structural view of a second embodiment of the present invention. As shown in the figure, it includes a first tube 100, a second tube 200, and a bracket 300', wherein the bracket 300' is formed integrally The structure.

Following the above, a bracket 300 ′ of this embodiment includes an upper support 320, a first bending member 340, a lower support 360 and a second bending member 380, one end of the first bending member 340 is connected One end of the upper support member 320, one end of the lower support member 360 is connected to the other end of the first bending member 340, one end of the second bending member 380 is connected to the other end of the upper support member 320, and the other end is connected to the lower support member 360 At the other end, the first tube 100 is disposed inside the bracket 300, one end of the first tube 100 is connected to the first bending member 340, and one end of the second tube 200 is sleeved on the first tube 100 and interferes with each other, and The other end of the second tube 200 is provided with a second bending member 380. In the present invention, at least one ratchet 160 can be provided on the side of the first tube 100. In this embodiment, at least one of the side of the first tube 100 is provided. The ratchet teeth 160 take a plurality of ratchet teeth 160 as an example. The ratchet teeth 160 are provided with at least one inclined surface 164. The ratchet teeth 160 include a vertical surface 162 and a inclined surface 164. The inclined surface 164 is connected to the vertical surface 162. The inclined surface 164 faces the first bending member 340, and the vertical surface 162 may also be an inclined surface. The present invention is not limited thereto, and the other end of the second pipe member 200 is provided with a first conduit 400. The setting method in this embodiment is a sleeve Assume.

In this embodiment, at least one first hollow part 348 is provided on the side of the first bending part 340 of the bracket 300', and at least one second hollow part 388 and at least one first hollow part are provided on the side of the second bending part 380 348 and the at least one second hollowed portion 388 can make the bracket 300' more lightweight, and make the first bending member 340 and the second bending member 380 easier to bend.

Referring again to FIG. 5, as shown in the figure, the first bending member 340 of this embodiment may be provided with a third clamping block 346 relative to the first clamping block 344, inserted on the first tube 100, and the second bending The folding member 380 can be provided with a fourth clamping block 386 relative to the second clamping block 384, and inserted into the second tube 200, so that the first tube 100 and the second tube 200 can be more firmly fixed on the bracket 300'.

Refer to FIG. 6A to FIG. 6C, which are schematic diagrams of the operation of the second embodiment of the present invention. As shown in the figure, the operation mode of the bracket 300' is the same as that of the bracket 300 described above, so no further description is required.

The stent 300' of the implantable device 10 which can be expanded and adjusted according to the present invention is formed in one piece, and hollows 348, 388 are further provided on the sides of the stent 300' to make the stent 300' more compact and easier to bend through the first tube The reverse movement of 100 and the second tube 200 deforms the first bending member 340 and the second bending member 380 to prop the bracket 300' apart, and the support of the present invention is located at both ends of the upper and lower support members 320, 360 to increase Supporting force, and adjust the expanded size of the bracket 300' by the ratchet teeth 160 of the first tube 100 and at least one catch 240 of the second tube 200, and the first tube 100 has an opening or a discharge port, To provide a channel for material transportation, the threaded portion 220 can be connected to the first catheter 400, and the threaded connection can firmly operate the operation and also enable the first catheter 400 to exit the surgical area more safely and effectively.

In summary, the expandable and adjustable implant device of the present invention is sleeved on a catheter, and a stent is deployed in the bone of the vertebral body. The stent is applied to the end plates of the upper and lower vertebral bodies to deform the vertebral body and return to the vertebral body. The original angle of the bracket, and the support arms of the bracket are placed at both ends to provide strong support; furthermore, a hollow part is provided on the bracket, and the hollow part is used to reduce the force required to expand the bracket, so that the bracket is placed on the vertebral bone The inside is easier to expand, and the bracket with the hollow part is applied to the end plates of the upper and lower vertebral bodies to deform the vertebral body and return to the original angle of the vertebral body.

Therefore, the present invention is truly novel, progressive and available for industrial use. It should meet the patent application requirements of my country's Patent Law. It is undoubtedly necessary to file an invention patent application in accordance with the law and pray for the early grant of patents.

However, the above is only an embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, all changes and modifications based on the shape, structure, features and spirit described in the patent application scope of the present invention are cited. All should be included in the patent application scope of the present invention.

10‧‧‧Extended and adjustable implant device

100‧‧‧The first pipe fitting

120‧‧‧The first outlet

140‧‧‧The third outlet

160‧‧‧ratchet

180‧‧‧First inlet

200‧‧‧Second pipe fitting

300‧‧‧Bracket

320‧‧‧Upper support

340‧‧‧The first bending piece

342‧‧‧The first bending part

344‧‧‧First card block

360‧‧‧Lower support

380‧‧‧The second bending part

382‧‧‧Second bending part

384‧‧‧Second card block

400‧‧‧The first catheter

Claims (14)

An expandable and adjustable implantation device includes: a bracket, which includes: an upper support member; a first bending member, one end of the first bending member is connected to one end of the upper support member; a lower support member, One end thereof is connected to the other end of the first bending member; and a second bending member, one end of the second bending member is connected to the other end of the upper support member, and the other end thereof is connected to the other end of the lower support member; A first pipe member connected to the bracket, one end of the first pipe member is connected to the first bending member; and a second pipe member, one end of the second pipe member is sleeved on the first pipe member and interferes with each other, the The other end of the second tube is pierced with the second bending part; wherein when the second tube moves, part of the second tube is moved out of the first tube, and the first bending part and the The second bending member deforms to stretch the upper support member and the lower support member. The structure of the expandable and adjustable implant device as described in claim 1, wherein a first clamping part of a first bending part of the first bending part is provided and inserted into the first tube, the second A second clamping block is disposed on a second bending portion of one of the bending members, and is inserted into the second tube member. The structure of the expandable and adjustable implant device according to claim 1, wherein the side of the first tube is provided with at least one ratchet, the at least one ratchet includes at least one inclined plane, and the at least one inclined plane faces the first bend At least one buckle is arranged on the inner side of the second tube, and the at least one buckle slides on the inclined surface, so that the at least one elastic buckle is engaged with the at least one ratchet. The structure of the implantable device with expandability and adjustment according to claim 1, wherein at least one first outlet is provided on the side of the first tube. The structure of the expandable and adjustable implant device as described in claim 1, wherein the other end of the first tube is provided with a first feed port. The structure of the expandable and adjustable implant device as described in claim 5 further includes a first catheter, the first catheter is disposed at the other end of the second tube. The structure of the expandable and adjustable implantation device according to claim 6, wherein one end of the first conduit is provided with a first feeding port, which communicates with the first feeding port. An implantable device that can be expanded and adjusted includes: a support, which includes: an upper support member; a first bending member, one end of the first bending member is connected to one end of the upper support member, and the first bending At least one first hollow part is provided on the side of the folding member; a lower support member, one end of which is connected to the other end of the first bending member; and a second bending member, one end of the second bending member is connected to the upper supporting member The other end, the other end of which is connected to the other end of the lower support, at least one second hollow part is provided on the side of the second bending part; a first tube is connected to the bracket, and one end of the first tube Connected to the first bending member; and a second pipe member, one end of the second pipe member is sleeved on the first pipe member and interferes with each other, the other end of the second pipe member is penetrated by the second bending member; wherein, when When the second pipe member moves, part of the second pipe member is removed from the first pipe member, and simultaneously deforms the first bending member and the second bending member to stretch the upper support member and the lower support member . The structure of the implantable device with expandability and adjustment as described in claim 8, wherein a first clamping part of a first bending part of the first bending member is inserted into the first tube member and the second A second clamping block is disposed on a second bending portion of one of the bending members, and is inserted into the second tube member. The structure of an expandable and adjustable implant device according to claim 8, wherein at least one ratchet is provided on the side of the first tube, the at least one ratchet includes at least one inclined surface, and the at least one inclined surface faces the first bend At least one buckle is arranged on the inner side of the second tube, and the at least one buckle slides on the inclined surface, so that the at least one elastic buckle is engaged with the at least one ratchet. The structure of the expandable and adjustable implant device as described in claim 8, wherein at least one first outlet is provided on the side of the first tube. The expandable and adjustable implant device structure as described in claim 8, wherein the other end of the first tube is provided with a first feed port. The structure of the expandable and adjustable implant device according to claim 12, further comprising a first catheter, the first catheter is disposed at the other end of the second tube. The structure of the expandable and adjustable implantation device according to claim 13, wherein one end of the first conduit is provided with a first feeding port, which communicates with the first feeding port.

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