CN103919594B - Vertebral Reamer - Google Patents

Abstract

The invention relates to a vertebra reaming device, in particular to a vertebra reaming device with a covering device. The vertebra reaming device of the present invention comprises: a deployment device having a proximal end with a steering mechanism and a distal end with a deployment device, wherein the deployment device is adjustable to a deployed state or a collapsed state by the steering mechanism; a covering device for remotely covering said deployment device such that said covering device is remotely adjustable from said deployment device from a collapsed position to an expanded position to create a space in a vertebra; and a connecting mechanism for connecting the proximal end of the covering device and the distraction device, wherein the connecting mechanism is located outside the body at a connecting position during the operation.

Description

Vertebral Reamer

technical field

The invention relates to a vertebral hole reaming device, in particular to a vertebral hole reaming device with a covering device.

Background technique

In orthopedic surgery, it is often necessary to ream the vertebrae first. At present, there are two common orthopedic reaming operations: one is to use a mechanical reaming device to ream the hole, for example: US patents 20110196494, 20110184447, 20100076426, 20070067034, 20060009689 , 20050143827, 20220052623, 6354995, 6676665, etc., Chinese Taiwan patents 585091, I318110, etc., but the biggest problem of the above-mentioned technology is: the crushed cancellous bone (cancellous bone) fragments during reaming often fall in the reaming device, causing The reaming device is stuck, so that the reaming component cannot be retracted (restored to a contracted state), and even the entire reaming device is stuck in the reaming part and cannot be taken out.

The other is to use a filling type reaming device, such as the series products of Kyphon Company of the United States. The series products of Kyphon Company are various balloons to meet different needs. The relevant patents of the device itself are such as: US Patent 5972015, 6066154 , 6,235,043, 6,423,083, 6,607,544, 6,623,505, 6,663,647, 6,716,216, etc., and related patents on its use methods such as: U.S. Patents 5,972,015, 6,048,346, 6,235,043, 6,248,110, 6,280,456, 6,440,138, 6,607,544, 6,716,276, 6,716, etc. In summary, Kypon’s reaming device and reaming method are nothing more than using high pressure to pour liquid (such as water) into the balloon (various balloons are used according to different needs) to inflate the balloon to push the vertebrae The inner cancellous bone to achieve the purpose of reaming. However, the above-mentioned device or method has many disadvantages, for example: the balloon must be connected to a nozzle, so when the liquid is injected under high pressure, the balloon may fall off from the nozzle, or even the balloon may burst, and the other The operation method is also relatively complicated; moreover, in order to meet different needs, the balloon must be designed with an internal restriction or an external restriction, for example, refer to the above-mentioned US Patent 6066154, or a specially designed reaming device, For example, US Patent No. 6,235,043 makes the manufacture and use of balloons relatively difficult.

Contents of the invention

One object of the present invention is to provide a vertebral reaming device.

Another object of the present invention is to provide a vertebral reaming device with a covering device.

Another object of the present invention is to provide a reusable vertebral reaming device.

Another object of the present invention is to provide a vertebral reaming device with a detachable covering device.

Another object of the present invention is to provide a vertebral reaming device that can replace the covering device.

Another object of the present invention is to provide a vertebral reaming device with the function of spreading the vertebrae.

Another object of the present invention is to provide a vertebral reaming device that prevents bone fragments from jamming the deploying device.

Another object of the present invention is to provide a vertebral reaming device that creates a space in the vertebrae.

The vertebral hole reaming device of the present invention uses a coating device to cover a remote expansion device of the distraction device, so that the distraction device can use mechanical force to expand and contract the remote expansion device in the vertebrae, thereby propping up the vertebrae Opening a space, the expansion device can further block the bone fragments in the vertebrae by the covering device, so that it will not be stuck by the bone fragments in the vertebrae, affecting its expansion and contraction functions or even causing the expansion device to be unable to move through the vertebrae. inner withdrawal; there is a connection mechanism between the covering device and the spreading device, wherein the covering device and the spreading device can further be a detachable connecting mechanism, and the detachable connection between the covering device and the spreading device Mechanism, after the vertebral reaming device expands a space in the vertebra and withdraws from the vertebra, the covering device can be easily removed from the spreading device. After the spreading device is sterilized, another new covering can be connected device, reused.

Vertebral reaming device of the present invention, it comprises:

A distraction device has an operating mechanism at its proximal end and an expansion device at its remote end, wherein the expansion device can be adjusted to an expanded state or a retracted state by the operating mechanism;

A covering device, the remote part of which is used to cover the expanding device, so that the remote part of the covering device can be adjusted from the contracted state to the expanded state by the expanding device to create a space in the vertebrae (as shown in Figures 7a and 7b) ;and

A connection mechanism, the connection mechanism is used to connect the proximal end of the covering device and the expansion device, wherein the connection position of the connection mechanism is located outside the body during the operation (as shown in FIG. 7 a ).

Above-mentioned stretching device comprises:

a deployment device;

a joystick with one end being the joystick proximal end and the other end being the joystick remote, the joystick remote being coupled to the deployment device; and

An assisting deployment device, one end of which is a manipulation end, and the other end is a joint end, wherein the manipulation end of the assisting deployment device is connected with the proximal end of the joystick to form the manipulation mechanism, and the manipulation mechanism makes the assisting deployment The device can use the joystick to adjust the expansion device to an expanded state or a contracted state (as shown in Figures 3a-3h), the joint end of the assisting expansion device and the proximal end of the covering device have a connection mechanism, The connecting mechanism is used to connect the assisting deployment device and the wrapping device;

Wherein the covering device is used for covering the operating rod and the expanding device.

The above-mentioned deployment device can be any known deployment device, such as U.S. Patent Nos. 20110196494, 20110184447, 20100076426, 20070067034, 20060009689, 20050143827, 20220052623, 6354995, 6676665, etc., or the devices described in Taiwan Patent Nos. Among them, lantern-shaped deployment devices (Fig. 2a, 2b, 2c, 2d) or strip-shaped deployment devices (Fig. 2g, 2h, 2i) are preferred.

The above-mentioned deployment device may have an arc protrusion (as shown in FIG. 1 b ) at its remote end, and the arc protrusion is used to withstand the distal end of the covering device, so as to prevent the remote end of the deployment device from being too far away. sharp to puncture the covering device when disassembling or assembling the covering device or manipulating the deployment device.

The above covering device may have a protruding portion at its distal end (as shown in Figure 1b), and the arcuate protruding portion of the spreading device may withstand the protruding portion, wherein the thickness of the protruding portion may be slightly thicker The thickness of other parts of the covering device is used to withstand the pressure from the spreading device.

The above connection mechanism can be a fixed connection mechanism or a detachable connection mechanism (as shown in Figures 1b, 4a-4f), and a detachable connection mechanism is preferred.

The above-mentioned detachable connection mechanism (as shown in Figure 1b, 4a~4f), by this detachable connection mechanism, the covering device can be easily removed from the spreading device. After the spreading device is sterilized, it can be used The detachable connection mechanism is connected to another new covering device for repeated use.

The distal end of the above-mentioned coating device can be in any known shape such as a spherical shape, a spherical shape, a gourd shape, a square shape, or a square shape.

The above covering device has an annular protrusion (as shown in Figure 1b) at its proximal end, which is used to combine with the joint end of the device for assisting deployment, and the annular protrusion can further have a fixed convex point (such as 1b) or a snap-fit part (as shown in Figure 4b, 4c) to increase the fixing effect of the combination of the covering device and the joint end of the assisting deployment device, and form a joint with the joint end of the assisting deployment device Detachable links.

The above-mentioned fixed connection mechanism may further have a connection kit, the connection kit forms a fixed connection mechanism with the joint end of the assisting deployment device, so as to connect the covering device and the assisting deployment device, the The fixed connection mechanism can be any known fixed connection mechanism, such as snap-fit, screw-fit, buckle-fit and other connection mechanisms.

The above-mentioned detachable connection mechanism can further have a connection kit, and the connection kit forms a detachable connection mechanism (as shown in Figures 4a, 4d, 4f) with the joint end of the assisting device to connect the described The covering device and the assisting device for deployment, the detachable connection mechanism can be any known detachable connection mechanism, such as snapping, screwing, buckling and other connection methods (as shown in Figures 4a, 4d, 4f Show).

The above-mentioned detachable connection mechanism between the joint end of the assisting device for deployment and the covering device can be any known detachable connection mechanism, such as snap-fit, screw-fit, buckle-fit, etc. (as shown in Figure 4a, 4b, 4c, 4d, 4e, 4f). Through the detachable connection, the covering device is a detachable covering device, and the unfolding device can be re-used after being sterilized with another covering device.

The material of the above-mentioned coating device is made of a biocompatible material, preferably an elastic biocompatible material, such as PU (polyurethane Poly-Urethane), silica gel (silicone rubber) and nylon ( Nylon) and so on.

The above-mentioned vertebral reaming device may further include a hollow rod, one end of the hollow rod is a proximal end, and the other end is a distal end, wherein the proximal end of the hollow rod is connected to the joint end of the assisting device, The distal end of the hollow rod is connected to the proximal end of the deployment device (as shown in Figures 2g, 2h, and 2i) or the remote end of the hollow rod is substantially integrally formed with the proximal end of the deployment device (such as 1a, 1b, 2a, 2b, 2c, 2d, 2e, 2f), then the deployment device can be moved by the relative stretching of the operating rod and the hollow rod (as shown in Fig. 3a, 3b, 3c, 3d) control the expansion device to be adjusted to an expanded state or a contracted state.

Description of drawings

Fig. 1a is a schematic diagram of a preferred embodiment of the vertebral hole reaming device of the present invention.

Fig. 1b is an expanded schematic diagram of a preferred embodiment of the vertebral hole reaming device of the present invention.

2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i, 2j, 2k, 2l, 2m, 2n, 2o are respectively schematic diagrams of preferred specific examples of the expansion device of the vertebral reaming device of the present invention.

Figures 3a, 3b, 3c, 3d, 3e, 3f, 3g, and 3h are respectively schematic diagrams of preferred specific examples of four deployment modes of the vertebral reaming device of the present invention.

Figures 4a, 4b, 4c, 4d, 4e, and 4f respectively show the connection methods between six kinds of expansion devices and covering devices of the vertebral reaming device of the present invention.

5a and 5b are schematic diagrams of preferred examples of disassembly and combination between the expansion device and the covering device of the vertebral reaming device of the present invention.

6a and 6b are schematic diagrams of disassembly and assembly methods between the expansion device and the covering device of the vertebral reaming device of the present invention.

Figures 7a, 7b and 7c are schematic views of the operation mode of the vertebral reaming device of the present invention.

reference sign

100. Spreading device 110. Expanding device 111. Lantern-shaped expanding device

112. Slit 113. Slotted hole 114. Strip expansion device

115. Plate-shaped spreading device 116. Spreading rod 117. Blade-shaped spreading device

118. Arc protrusion 119. Thread 120. Assisting deployment device

130. Joystick 140. Hollow rod 200. Covering device

210. Spherical covering member 211. Protrusion 220. Rod-shaped covering member

230. Annular protrusion 231. Fixing hole 232. Engagement part

233. Annular groove 234. Side panels 300. Detachable coupling mechanism

310. Connecting kit 311. Bump engaging part 312. Engaging hole

313. Tenon 320. Joint end 321. Fixing groove

322. Fixing bump 323. Engagement slot 324. Engagement bump

325. Annular bump 326. Snap vane 400. Fitting

500. Vertebrae 600. Space

detailed description

Fig. 1a is a schematic diagram of a preferred embodiment of the vertebral hole reaming device of the present invention. The coating device 200 is composed of a ball-shaped coating part 210 and a rod-shaped coating part 220 to completely cover the deployment device 110 and the hollow rod 140, so as to prevent bodily fluids and other tissues in the body from contacting the deployment device 110. At the same time, the coating device 200, Blocking the bone fragments in the vertebrae, so that the expansion device 110 will not be stuck due to the bone fragments in the vertebrae, so that the expansion device 110 cannot be retracted to a contracted state, so that the expansion device cannot be withdrawn from the vertebrae. The wrapping device 200 is connected with the assisting device 120 by using a connection kit 310, and the connection kit 310 is a detachable connection, so that the wrapping device 200 is a detachable wrapping device 200, and the vertebral reaming device is After use, the used covering device 200 can be removed from the spreading device 100 , and another covering device 200 can be installed on the spreading device 100 for repeated use. In addition, the deploying device 110 has an arc convex portion 118, the top of the arc convex portion 118 is arc-shaped, so as to avoid piercing the covering device 200 when disassembling and assembling the covering device 200, and the covering device 200 is prevented from being pierced. The front end of device 200 has a protruding part 211, and the thickness of this protruding part 211 is slightly thicker than the thickness of other parts of described cladding device 200, in order to support the pressure from the arc convex part 118 of spreading device 110 (see Figures 5a, 5b). The assisting deployment device 120 expands or contracts the deployment device 110 in a push or pull manner, so that the deployment device 110 spreads the covering device 200 in the vertebrae, and creates a space in the vertebrae, so as to facilitate Subsequent surgery to place bone fixation devices or perfuse medical fillers is performed. The above-mentioned connecting kit 310 for connecting the covering device 200 and the assisting device 120 to expand can also be a fixed connection, which only needs to add a non-detachable snapping structure or buckling structure to the connecting kit 310 .

Fig. 1b is an expanded schematic diagram of a preferred embodiment of the vertebral hole reaming device of the present invention. Wherein, there is a detachable connection mechanism 300 between the covering device 200 and the assisting device 120. In the detachable connection mechanism 300, there is a fixing hole 231 on the ring-shaped convex part 230 of the covering device 200, which is used to cooperate with the assisting device. The fixed protrusion 322 on the coupling end 320 of the deployment device 120 is connected so that the assisting deployment device 120 and the wrapping device 200 will not slide or rotate, and further use the protrusions of the connection kit 310 to engage the component 311 and the coupling end 320 The fixing slot 321 of the cover member 200 is fixed to the assisting device 120 for deployment. The detachable connection mechanism 300 between the covering device 200 and the assisting device 120 makes the covering device 200 a detachable covering device 200. After use, the vertebral reaming device can be The used covering device 200 is removed from the spreading device 100 , and another covering device 200 is installed on the spreading device 100 for repeated use. And the connection position of the detachable connection mechanism 300 is outside the body during the operation.

2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i, 2j, 2k, 2l, 2m, 2n, 2o are respectively schematic diagrams of preferred specific examples of the expansion device of the vertebral reaming device of the present invention. Figure 2a shows the four-piece lantern-shaped stent 111 in a retracted state. Fig. 2b shows: the four-piece lantern-shaped deployment device 111 in a deployed state. FIG. 2 c shows the four-piece lantern-shaped stent 111 in a contracted state with slits 112 and slots 113 . FIG. 2 d shows that the four-piece lantern-shaped deployment device 111 is in a deployed state by utilizing the structures of the slits 112 and the slots 113 . Figure 2e shows: the two-piece lantern-shaped stent 111 in a retracted state. Figure 2f shows: the two-piece lantern-shaped deployment device 111 in the deployed state. Fig. 2g shows: the strip-shaped deployment device 114 in a contracted state. Figure 2h shows: the strip-shaped deployment device 114 in the deployed state. Fig. 2i shows: the gourd-shaped strip-shaped unfolding device 114 in an unfolded state. Figure 2j shows: the plate-like stent 115 in a retracted state. FIG. 2k shows that the plate-shaped deployment device 115 is stretched to the deployed state by using the deployment rod 116 . Fig. 2l shows: the blade-type deployment device 117 in a retracted state. Figure 2m shows the blade-type deployment device 117 in a deployed state. Figure 2n shows the stent 110 in a retracted state. FIG. 2 o shows that the deployment device 110 is stretched to a deployed state by using the deployment rod 116 .

Figures 3a, 3b, 3c, 3d, 3e, 3f, 3g, and 3h are respectively schematic diagrams of preferred specific examples of four deployment modes of the vertebral reaming device of the present invention. Figures 3a and 3b show that: pushing the assisting deployment device 120, the relative movement between the joystick 130 and the hollow rod 140 will expand the deployment device 110 from the contracted state (as shown in Figure 3a) to the deployed state (as shown in Figure 3b Show). Figures 3c and 3d show that: pulling the joystick 130, the relative movement between the joystick 130 and the hollow rod 140 will expand the deployment device 110 from the contracted state (as shown in Figure 3c) to the unfolded state (as shown in Figure 3d ). Figures 3e and 3f show: rotate the joystick 130, and use the rotation of the rotating thread 119 on the joystick to drive the unfolding rod 116, so as to expand the unfolding rod 116, so that the plate-shaped unfolding device 115 is changed from the contracted state (as shown in Figure 3e Shown) unfolded into the unfolded state (as shown in Figure 3f). Figures 3g and 3h show that: turning the joystick 130 expands the blade-type spreading device 117 from the retracted state (as shown in Figure 3g) to the deployed state (as shown in Figure 3h).

4a, 4b, 4c, 4d, 4e, and 4f respectively show six detachable connection mechanisms 300 of the vertebral reaming device of the present invention. FIG. 4 a shows that the cladding device 200 is fixed to the deployment assisting device 120 by engaging the protrusion engaging part 311 of the connection kit 310 with the fixing groove 321 in the coupling end 320 of the assisting deployment device 120 . FIG. 4b shows that the cladding device 200 is fixed to the assisted-deployment device 120 by using the engaging part 232 of the annular protrusion 230 of the covering part 200 to engage with the engaging groove 323 in the coupling end 320 of the assisting-deployment device 120 . FIG. 4c shows that the cladding device 200 is fixed to the assisted-deployment device 120 by using the engaging part 232 of the annular protrusion 230 of the covering part 200 to engage with the engaging groove 323 in the coupling end 320 of the assisting-deployment device 120 . FIG. 4 d shows that the cladding device 200 is fixed to the deployment assisting device 120 by using the engaging hole 312 of the connecting sleeve 310 to engage with the engaging protrusion 324 of the coupling end 320 . Figure 4e shows: the annular groove 233 of the annular protrusion 230 of the covering device 200 is used to engage with the annular protrusion 325 of the joint end 320, and the connection between the joint end 320 of the covering device 200 and the connecting sleeve 310 is further utilized. The screwing between them fixes the covering device 200 to the assisting device 120 for deployment. FIG. 4 f shows that the cladding device 200 is fixed to the deployment assisting device 120 by using the tenon 313 of the connection kit 310 to engage with the engaging blade 326 of the joint end 320 . The above-mentioned connection method can also be a fixed connection, and those who are familiar with this technology can modify it from the above structure, such as: adding a locking or buckling mechanism to make it a fixed connection.

5a and 5b are schematic diagrams of preferred examples of disassembly and combination between the expansion device and the covering device of the vertebral reaming device of the present invention. The deployment device 110 has an arc convex portion 118, the top of the arc convex portion 118 is arc-shaped, so as to avoid piercing the covering device 200 when the covering device 200 is disassembled. The front end has a protruding portion 211 , the thickness of which is slightly thicker than that of other parts of the wrapping device 200 , to support the pressure from the arc convex portion 118 of the spreading device 110 .

6a and 6b are schematic diagrams of disassembly and assembly methods between the spreading device and the covering device of the vertebral reaming device of the present invention. The covering device 200 is a detachable covering device 200 by the detachable connecting mechanism 300 between the spreading device 100 and the connecting sleeve 310, and the used covering device 200 can be used after the vertebral reaming device is used. The covering device 200 is detached and another covering device 200 is installed on the spreading device so that it can be reused.

Figures 7a, 7b and 7c are schematic views of the operation mode of the vertebral reaming device of the present invention. FIG. 7 a shows: the wrapping device 200 and the deployment device 110 are placed into the vertebrae 500 through the tube 400 . FIG. 7 b shows that the deployment device 110 is deployed by using the deployment assisting device 120 , and the spherical covering part 210 is stretched by the deployment device 110 to create a space 600 in the vertebra 500 . FIG. 7 c shows that the expansion device 110 is contracted by the assisting expansion device 120 , and the covering device 200 and the expansion device 110 are taken out from the vertebra 700 , and the space 600 generated after the reaming can be seen.

Claims (12)

1. A vertebral reaming device that can replace the covering device, which comprises: A stretching device, its proximal end has an operating mechanism, and its remote end has an expansion device, wherein the expansion device is adjusted to an expanded state or a retracted state by the operating mechanism; a covering device, the distal end of which is used to cover the spreading device, so that the remote part of the covering device is adjusted from a contracted state to an expanded state by the spreading device to create a space in the vertebrae; and A connection mechanism, the connection mechanism is used to connect the proximal end of the covering device and the expansion device, wherein the connection position of the connection mechanism is located outside the body during the operation, and the connection mechanism is a detachable connection mechanism. 2. The vertebral reaming device of claim 1, wherein: The steering mechanism includes a joystick having a proximal joystick at one end and a remote joystick at the other end, the remote joystick being coupled to the deployment device; and The spreading device further includes a device for assisting deployment, one end of which is a manipulation end, and the other end is a joint end, wherein the manipulation end of the device for assisting deployment is connected to the proximal end of the joystick, so that the device for assisting deployment can use the The joystick adjusts the expansion device to an expanded state or a contracted state, and the connecting mechanism is used to connect the joint end of the assisting expansion device and the proximal end of the covering device; Wherein the covering device is used for covering the operating rod and the expanding device. 3. The vertebral reaming device as claimed in claim 2, wherein the vertebral reaming device further comprises a hollow rod, one end of which is a proximal end and the other end is a distal end, wherein the proximal end of the hollow rod is in contact with The joint end of the assisting deployment device is connected, the remote end of the hollow rod is connected to the proximal end of the deployment device, and the deployment device is controlled by the relative stretching motion of the hollow rod and the operating rod. The unfolding device adjusts it to an expanded state or a retracted state. 4. The vertebral reaming device according to claim 2, wherein the proximal end of the covering device has an annular protrusion for combining with the coupling end of the assisting deployment device. 5 . The vertebral reaming device according to claim 4 , wherein the annular protrusion has an engaging part for forming a detachable connection mechanism with the coupling end of the assisting device for expansion. 5 . 6. The vertebral reaming device according to claim 2, wherein the connection mechanism has a connection sleeve, and the connection sleeve and the joint end of the assisting device form a detachable connection mechanism to connect the covering The detachable connection mechanism between the device and the device for assisting deployment is snap-fit, screw-fit or buckle-fit. 7. The vertebral reaming device according to claim 1 or 2, wherein the connection mechanism is snap-fit, screw-fit or buckle-fit. 8. The vertebral hole reaming device according to claim 1 or 2, wherein the covering device is made of polyurethane, silicone or nylon. 9. The vertebral reaming device according to claim 1 or 2, wherein the coating device is a spherical coating device, a ball-like coating device, a gourd-shaped coating device or a square coating device. 10. The vertebral reaming device according to claim 1 or 2, wherein the deployment device is a lantern-shaped deployment device. 11. The vertebral reaming device according to claim 1 or 2, wherein the distal end of the spreading device has a circular arc protrusion. 12. The vertebral reaming device of claim 1 or 2, wherein the distal tip of the covering device has a protrusion.