TWI840183B - Surgical navigation fixing device - Google Patents

Abstract

A surgical navigation fixing device is proposed. The surgical navigation fixing device is configured to fix to an object. The surgical navigation fixing device includes a reference array assembly and a fixing assembly. The fixing assembly is pivotally disposed on the reference array assembly. The fixing assembly includes a base, a clamp and a retaining unit. The base includes a mounting portion and an opening. The clamp is pivotally disposed on the mounting portion, and configured to clamp the object. The retaining unit passes through the mounting portion via the opening. The retaining unit is embedded in the object, and therefore the reference array assembly and the fixing assembly are firmly fixed on the object. Thus, the surgical navigation fixing device of the present disclosure improves the stability of the reference array assembly and the fixing assembly fixed on the object and avoids the problem of damage to the object.

Description

Surgical navigation fixation device

The present invention relates to a surgical navigation fixation device, and in particular to a fixation device used for a cervical spine surgical navigation marking element.

With the advent of an aging society and the effects of long-term poor posture, the incidence of cervical spine diseases has increased year by year. In the treatment of cervical spine surgery, computer-assisted navigation systems are usually used to increase surgical safety. Due to the physiological structure of the cervical spine, the distance between the vertebral arteries, nervous system and spinal cord is closer than that of the thoracic and lumbar spine. Compared with the surgical navigation of the thoracic and lumbar spine, cervical spine navigation requires more careful planning, otherwise it will cause complications of the nervous system or blood system.

Common cervical spine surgeries are usually performed using a navigation system with pedicle screws fixed to the cervical spine, or a navigation system with a reference array fixed to the cervical spine. Pedicle screws have good mechanical stability and fusion rate because they are placed in the pedicles. However, when drilling holes for pedicle screws, the screws may penetrate the pedicles and damage nerves and blood vessels. Reference arrays are fixed to the cervical spinous processes by clamping or pinning. However, since the cervical spinous processes are small, the clamping sites are inconsistent and few. Generally, reference arrays are not easy to clamp. Two-point clamping or sharp-point clamping can easily break the spinous processes or cannot be stably fixed to the spinous processes. Pinning can also easily cause spinal process fractures. In addition to being incompatible with the cervical spine structure, there is also a risk of biting off the cervical spinous processes.

In view of this, developing a stable and surgical navigation fixation device suitable for cervical spine structure has become a worthy research and development goal for relevant industries.

Therefore, the purpose of the present invention is to provide a surgical navigation fixation device, which can be effectively fixed to the cervical spinous process through a clamp and a stabilizer, and avoid the problem of damage to the cervical spinous process.

According to an embodiment of the present invention, a surgical navigation fixation device is provided for fixing to an object. The surgical navigation fixation device comprises a frame assembly and a fixing assembly. The fixing assembly is pivoted on the frame assembly, and the fixing assembly comprises a seat, a clamp and a stabilizer. The seat has a mounting portion and an opening. The clamp is pivoted on the mounting portion and is used to clamp the object. The stabilizer is inserted into the mounting portion through the opening. The stabilizer is embedded in the object, so that the frame assembly and the fixing assembly are firmly fixed to the object.

Thus, the surgical navigation fixation device of the present invention can increase the area of the clamped object and disperse the clamping force through the clamp, and strengthen the stability of the frame assembly and the fixing assembly fixed to the object through the stabilizer, thereby preventing damage to the object and strengthening the fixation, and can further improve the surgical navigation positioning and save the operation time.

Other embodiments of the above-mentioned embodiment are as follows: the above-mentioned frame assembly includes a connecting rod and a reference frame, the connecting rod has a first end and a second end, the reference frame is pivoted at the first end, and the fixing assembly is pivoted at the second end.

Other embodiments of the aforementioned embodiment are as follows: a first normal direction of the aforementioned first end is perpendicular to a second normal direction of the second end.

Other embodiments of the aforementioned implementation are as follows: the aforementioned clamp is a two-claw clamp, each of which has two clamping claws, and the two clamping claws are integrally formed.

Other embodiments of the above-mentioned embodiment are as follows: the above-mentioned fixing assembly further includes an adjusting member and a moving member. The adjusting member is pivoted around the opening, and the adjusting member can move up and down relative to the mounting portion to open or close the two claws. The moving member is disposed at the mounting portion and is located between the adjusting member and the clamp. The moving member abuts against an inclined surface of the two claws, and the moving member can push the inclined surface as the adjusting member moves, thereby opening or closing the two claws.

Other embodiments of the aforementioned embodiment are as follows: the aforementioned surgical navigation fixation device further includes a connecting piece, which is used to connect a connecting portion of the seat body to the second end of the connecting rod.

Other embodiments of the aforementioned embodiment are as follows: the aforementioned frame assembly further includes a coupling member and a linkage member, and the coupling member couples the reference frame to the first end of the connecting rod through the linkage member.

Other embodiments of the above-mentioned embodiment are as follows: the above-mentioned clamp has four claws, and the fixing assembly further includes four adjusting pieces and a moving piece. The four adjusting pieces are pivotally arranged around the opening, and the four adjusting pieces can move up and down relative to the mounting portion, and adjust the four claws respectively to open or close the four claws. The moving piece is arranged at the mounting portion and is located between the four adjusting pieces and the clamp. The moving piece abuts against an inclined surface of the four claws, and the moving piece can push each inclined surface respectively as the four adjusting pieces move, thereby opening or closing the four claws.

Other embodiments of the aforementioned implementation are as follows: the aforementioned fixing assembly further includes a plurality of clamping members for clamping the clamp and the mounting portion.

Other embodiments of the above-mentioned embodiment are as follows: the teeth of the above-mentioned clamp are wavy.

The following will describe several embodiments of the present invention with reference to the drawings. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is to say, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some commonly known structures and components will be depicted in the drawings in a simple schematic manner; and repeated components may be represented by the same number.

In addition, in this article, when a certain component (or unit or module, etc.) is "connected" to another component, it may refer to that the component is directly connected to the other component, or it may refer to that the component is indirectly connected to the other component, that is, there are other components between the component and the other component. When it is clearly stated that a certain component is "directly connected" to another component, it means that there are no other components between the component and the other component. The terms first, second, third, etc. are only used to describe different components, and there is no restriction on the components themselves. Therefore, the first component can also be renamed as the second component. Moreover, the combination of components/units/circuits in this article is not a generally known, conventional or familiar combination in this field. Whether the components/units/circuits themselves are known cannot be used to determine whether their combination relationship is easy to be completed by ordinary knowledge in the technical field.

Please refer to Figure 1 and Figure 2, Figure 1 is a three-dimensional schematic diagram of a surgical navigation fixture 100 according to the first embodiment of the present invention; and Figure 2 is an exploded schematic diagram of the surgical navigation fixture 100 according to Figure 1. The surgical navigation fixture 100 is used to fix a marking element to an object to assist the positioning of a surgical navigation system.

The surgical navigation fixation device 100 comprises a frame assembly 110, a fixing assembly 120 and a connecting member 130, wherein the connecting member 130 is disposed between the frame assembly 110 and the fixing assembly 120. In the first embodiment, the marking element may be a reflective ball, and the object may be a cervical vertebral process, but the present invention is not limited thereto.

The frame assembly 110 includes a connecting rod 111, a reference frame 112, a coupling member 113, a linking member 114 and a reflective ball base 115. The coupling member 113 and the linking member 114 are disposed between the connecting rod 111 and the reference frame 112. The reflective ball base 115 is disposed on the reference frame 112 and is used to install a reflective ball, thereby assisting surgical navigation and positioning.

Please refer to Figures 1, 2 and 3, Figure 3 is a three-dimensional schematic diagram of the connecting rod 111 of the surgical navigation fixation device 100 according to Figure 1. The connecting rod 111 has a first end 1111 and a second end 1112, the reference frame 112 is pivoted at the first end 1111, and the fixing assembly 120 is pivoted at the second end 1112; in the first embodiment, a first normal line A1 of the first end 1111 is perpendicular to a second normal line A2 of the second end 1112.

Thereby, the surgical navigation fixation device 100 of the present invention will not interfere with the operation of surgical instruments and affect the surgical efficiency when installed in the reference frame 112, nor will it cause the positioning mark to be obscured and affect the positioning.

The reference frame 112 is coupled to the connecting rod 111 through the coupling member 113 and the connecting member 114. Specifically, the coupling member 113 can pass through the connecting member 114 to couple the reference frame 112 to the first end 1111 of the connecting rod 111; in the first embodiment, the coupling member 113 can be a screw, and the connecting member 114 can be a gear seat, but the present invention is not limited thereto.

The fixing assembly 120 includes a base 121, a clamp 122, a stabilizer 123, an adjustment member 124, a moving member 125 and a plurality of clamping members 126. The clamp 122 and the adjustment member 124 are pivotally mounted on the base 121, the stabilizer 123 is passed through the base 121, the moving member 125 is disposed between the adjustment member 124 and the clamp 122, and the clamping member 126 is disposed between the base 121 and the clamp 122.

The seat 121 has a mounting portion 1211, an opening 1212 and a connecting portion 1213; the clamp 122 and the moving member 125 are pivotally mounted on the mounting portion 1211, the stabilizing member 123 is passed through the opening 1212 and is mounted on the mounting portion 1211, and the adjusting member 124 is pivotally mounted around the opening 1212; in the first embodiment, the seat 121 is a saddle, but the present invention is not limited thereto.

Please refer to Figure 1 and Figure 4. Figure 4 is a three-dimensional schematic diagram of the claw 1221 of the clamp 122 of the surgical navigation fixation device 100 according to Figure 1. The clamp 122 is used to clamp an object. In the first embodiment, the clamp 122 is two claws 1221, which are pivotally arranged on both sides of the mounting portion 1211, and each claw 1221 has two clamping claws 1221a and 1221b. In particular, the two clamping claws 1221a and 1221b are integrally formed and actuated simultaneously, and the teeth of the two clamping claws 1221a and 1221b are wavy. Thus, the surgical navigation fixation device 100 can increase the clamping area of the clamped object and thus increase the clamping force by using the two claws 1221 having the two clamping claws 1221a and 1221b respectively, and can effectively disperse the clamping force to avoid damaging the object.

The stabilizer 123 can be embedded in an object, so that the frame assembly 110 and the fixing assembly 120 are fixed to the object stably. Specifically, the stabilizer 123 is inserted through the center of the mounting portion 1211, and the stabilizer 123 can be rotated and drilled into a portion of the surface of the object to enhance the stability of the fixing assembly 120, and further fix the frame assembly 110 to the object stably; in the first embodiment, the stabilizer 123 can be a bone pin, but the present invention is not limited thereto.

Please refer to FIG. 1, FIG. 4, FIG. 5A and FIG. 5B. FIG. 5A is a cross-sectional view of the fixing assembly 120 along the section line 5-5 of FIG. 1, which is used to show that the adjusting member 124 opens the clamp 122. FIG. 5B is a cross-sectional view of the fixing assembly 120 along the section line 5-5 of FIG. 1, which is used to show that the adjusting member 124 closes the clamp 122. The adjusting member 124 and the moving member 125 are used to open or close the two claws 1221.

Specifically, the two claws 1221 each have an inclined surface B, the adjusting member 124 abuts against the moving member 125, and the moving member 125 abuts against the inclined surface B. The adjusting member 124 can move up and down relative to the mounting portion 1211, and the moving member 125 can push the inclined surface B along with the movement of the adjusting member 124, thereby opening or closing the two claws 1221. Thus, by rotating a single adjusting member 124 to control the opening or closing of the two claws 1221, the clamping and fixing is more efficient.

To further explain, when the adjusting member 124 moves upward, the moving member 125 can reduce the force applied to the pushing inclined surface B, thereby opening the two claws 1221; when the adjusting member 124 moves downward, the moving member 125 can increase the force applied to the pushing inclined surface B, thereby closing the two claws 1221; in the first embodiment, the adjusting member 124 can be a screw and the moving member 125 can be a gasket, but the present invention is not limited to this.

The fastening member 126 is used to fasten the clamp 122 and the mounting portion 1211 so that the clamp 122 is pivoted on the mounting portion 1211 . In the first embodiment, the fastening member 126 is a positioning pin.

The connecting member 130 is used to pivot the fixing assembly 120 on the frame assembly 110. Specifically, the connecting member 130 can connect the connecting portion 1213 of the seat body 121 to the second end 1112 of the connecting rod 111. In the first embodiment, the connecting member 130 is a screw.

Please refer to FIG. 6 and FIG. 7, FIG. 6 is a three-dimensional schematic diagram of a surgical navigation fixation device 200 according to the second embodiment of the present invention; and FIG. 7 is an exploded schematic diagram of the surgical navigation fixation device 200 according to FIG. 6. The surgical navigation fixation device 200 includes a frame assembly 210, a fixing assembly 220, and a connecting member 230, and the connecting member 230 is disposed between the frame assembly 210 and the fixing assembly 220. In the second embodiment, the marking element may be a reflective ball, and the object may be a cervical vertebral process, but the present invention is not limited thereto.

The frame assembly 210 includes a connecting rod 211, a reference frame 212, a coupling 213, a link 214 and a reflective ball base 215. The coupling 213 and the link 214 are disposed between the connecting rod 211 and the reference frame 212. The reflective ball base 215 is disposed on the reference frame 212 to install a reflective ball, thereby assisting in surgical navigation and positioning.

The connecting rod 211 has a first end 2111 and a second end 2112. The reference frame 212 is pivoted at the first end 2111, and the fixing assembly 220 is pivoted at the second end 2112. The connecting rod 211 is the same as the connecting rod 111 in FIGS. 1 to 3, and will not be described again.

The reference frame 212 is coupled to the connecting rod 211 through the coupling member 213 and the connecting member 214. Specifically, the coupling member 213 can pass through the connecting member 214 to couple the reference frame 212 to the first end 2111 of the connecting rod 211; in the second embodiment, the coupling member 213 can be a screw, and the connecting member 214 can be a gear seat, but the present invention is not limited thereto.

The fixing assembly 220 includes a base 221, a clamp 222, a stabilizer 223, four adjusting members 224, a moving member 225 and a plurality of clamping members 226. The clamp 222 and the adjusting member 224 are pivotally mounted on the base 221, the stabilizer 223 is passed through the base 221, the moving member 225 is disposed between the adjusting member 224 and the clamp 222, and the clamping member 226 is disposed between the base 221 and the clamp 222.

The seat 221 has a mounting portion 2211, an opening 2212 and a connecting portion 2213; the clamp 222 and the moving member 225 are pivotally mounted on the mounting portion 2211, the stabilizing member 223 is passed through the opening 2212 and is mounted on the mounting portion 2211, and the adjusting member 224 is pivotally mounted around the opening 2212; in the second embodiment, the seat 221 is a saddle, but the present invention is not limited thereto.

In the second embodiment, the clamp 222 is a four-claw 2221, and the four-claw 2221 is evenly distributed on the mounting portion 2211. Each claw 2221 can adjust the degree of opening and closing respectively, and the teeth of each claw 2221 are wavy; thereby, the surgical navigation fixation device 200 can increase the clamping area of the clamped object through the four claws 2221 to increase the clamping force, and at the same time can effectively disperse the clamping force to avoid damage to the object.

The stabilizer 223 can be embedded in an object, so that the frame assembly 210 and the fixing assembly 220 are fixed to the object stably. Specifically, the stabilizer 223 is inserted through the center of the mounting portion 2211, and the stabilizer 223 can be rotated and drilled into a part of the surface of the object to enhance the stability of the fixing assembly 220, and further fix the frame assembly 210 to the object stably; in the second embodiment, the stabilizer 223 can be a bone pin, but the present invention is not limited thereto.

In the second embodiment, the four adjusting members 224 and the moving member 225 are used to respectively open or close the four claws 2221. Specifically, each claw 2221 has an inclined surface B, and the four adjusting members 224 respectively adjust one of the claws 2221, and the four adjusting members 224 abut against the moving member 225, and the moving member 225 abuts against the inclined surface B. The adjusting member 224 can move up and down relative to the mounting portion 2211, and the moving member 225 can push each inclined surface B respectively as the different adjusting members 224 move, thereby opening or closing the four claws 2221.

To further explain, when the adjusting member 224 moves upward, the movable member 225 at the corresponding position can reduce the force of pushing the corresponding inclined surface B, thereby causing the corresponding claw 2221 to open outward; when the adjusting member 224 moves downward, the movable member 225 at the corresponding position can increase the force of pushing the corresponding inclined surface B, thereby causing the corresponding claw 2221 to close inward; in the second embodiment, the adjusting member 224 can be a screw, and the movable member 225 can be a cross-shaped gasket, but the present invention is not limited to this.

The fastening member 226 is used to fasten the clamp 222 and the mounting portion 2211 so that the clamp 222 is pivoted on the mounting portion 2211 . In the second embodiment, the fastening member 226 is a positioning pin.

The connecting member 230 is used to pivot the fixing assembly 220 on the frame assembly 210. Specifically, the connecting member 230 can connect the connecting portion 2213 of the seat 221 to the second end 2112 of the connecting rod 211. In the second embodiment, the connecting member 230 is a screw.

From the above implementation, it can be seen that the present invention has the following advantages. First, the clamping area of the clamped object can be increased to increase the clamping force, and at the same time, the clamping force can be effectively dispersed by multi-point clamping to avoid damage to the object (such as the spinous process of the cervical vertebra); second, the stability of the frame assembly and the fixing assembly fixed to the object can be enhanced by using the clamp in combination with a stabilizer disposed in the center of the mounting portion, thereby having the effect of more perfecting the surgical navigation positioning and thus saving the surgical time.

Although the present invention has been disclosed in the form of implementation as above, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined in the attached patent application.

100,200: Surgical navigation fixation device

110,210:Frame assembly

111,211: Connecting rod

1111,2111:First end

1112,2112: Second end

112,212: Reference Framework

113,213: Binding parts

114,214: Linkage

115,215:Reflective ball base

120,220:Fixed components

121,221: Seat

1211,2211: Installation Department

1212,2212:Open

1213,2213:Connection

122,222: Clamp

1221,2221: Claw

1221a,1221b: Clamping claws

123,223:Stable firmware

124,224:Adjustment parts

125,225: Moving parts

126,226:Card firmware

130,230: Connectors

A1: First Normal

A2: Second Normal

B: Inclined surface

Figure 1 is a three-dimensional schematic diagram of the surgical navigation fixture of the first embodiment of the present invention; Figure 2 is an exploded schematic diagram of the surgical navigation fixture according to Figure 1; Figure 3 is a three-dimensional schematic diagram of the connecting rod of the surgical navigation fixture according to Figure 1; Figure 4 is a three-dimensional schematic diagram of the claw of the clamp of the surgical navigation fixture according to Figure 1; Figure 5A is a cross-sectional view of the fixing assembly along the section line 5-5 of Figure 1, which is used to indicate that the adjustment piece opens the clamp; Figure 5B is a cross-sectional view of the fixing assembly along the section line 5-5 of Figure 1, which is used to indicate that the adjustment piece closes the clamp; Figure 6 is a three-dimensional schematic diagram of the surgical navigation fixture of the second embodiment of the present invention; and Figure 7 is an exploded view of the surgical navigation fixation device according to Figure 6.

100: Surgical navigation fixation device

110:Frame assembly

111: Connecting rod

1111: First end

1112: Second end

112: Reference Framework

113: Binding parts

114: Linkage

115: Reflective ball base

120:Fixed components

121: Seat

1211: Installation Department

1212: Open mouth

1213:Connection part

122: Clamp

1221: Claw

123: Firmware

124: Adjustment parts

125: Moving parts

126:Card firmware

130: Connectors

Claims (10)

A surgical navigation fixation device is used to fix an object. The surgical navigation fixation device comprises: a frame assembly; and a fixation assembly pivotally mounted on the frame assembly. The fixation assembly comprises: a base having a mounting portion and an opening; a clamp pivotally mounted on the mounting portion and used to clamp the object; a stabilizer penetrating through the opening and mounted on the mounting portion; and at least one adjustment member pivotally mounted on the opening. The at least one adjusting member is disposed on the periphery of the object, and the at least one adjusting member can move up and down relative to the mounting portion to open or close the clamp; and a moving member is disposed on the mounting portion and located between the at least one adjusting member and the clamp, and the moving member can drive the clamp to open or close as the at least one adjusting member moves; wherein the stabilizing member is embedded in the object, so that the frame assembly and the fixing assembly are stably fixed to the object. A surgical navigation fixation device as described in claim 1, wherein the frame assembly comprises: a connecting rod having a first end and a second end; and a reference frame pivoted at the first end; wherein the fixation assembly pivots at the second end. A surgical navigation fixation device as described in claim 2, wherein a first normal direction of the first end is perpendicular to a second normal direction of the second end. As described in claim 1, the surgical navigation fixation device, wherein the clamp is a two-claw, each of which has two clamping claws, and the two clamping claws are integrally formed. As described in claim 4, the number of the at least one adjustment member is one, the adjustment member can move up and down to open or close the two claws, the moving member abuts against an inclined surface of the two claws, and the moving member can push the inclined surface as the adjustment member moves, thereby opening or closing the two claws. The surgical navigation fixation device as described in claim 2 further comprises a connecting member, which is used to connect a connecting portion of the base to the second end of the connecting rod. A surgical navigation fixation device as described in claim 2, wherein the frame assembly further comprises a coupling member and a linkage member, wherein the coupling member couples the reference frame to the first end of the connecting rod via the linkage member. The surgical navigation fixation device as described in claim 1, wherein the clamp is a four-claw, the number of the at least one adjustment member is four, the four adjustment members can move up and down, and adjust the four claws respectively to open or close the four claws, the moving member abuts against one of the inclined surfaces of the four claws, and the moving member can push each of the inclined surfaces respectively as the four adjustment members move, thereby opening or closing the four claws. The surgical navigation fixation device as described in claim 1, wherein the fixation assembly further comprises a plurality of fastening members for fastening the clamp and the mounting portion. A surgical navigation fixation device as described in claim 1, wherein the teeth of the clamp are wavy.

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