Osteotomy guide plate

Abstract

The utility model discloses an osteotomy guide plate which comprises a guide plate base, a fixing nail, an osteotomy slotted vane and a slotted vane fixing piece. The guide plate base is provided with a fixing hole and a mounting groove, the fixing nail penetrates through the fixing hole to fix the guide plate base to a target skeleton, and the mounting groove is used for mounting an osteotomy slotted sheet; the slotted vane fixing part is detachably mounted on the guide plate base and can be switched between a first state and a second state relative to the guide plate base, the slotted vane fixing part in the first state is used for preventing the osteotomy slotted vane from being separated from the mounting groove, and the slotted vane fixing part in the second state allows the osteotomy slotted vane to be separated from the mounting groove. The problem that an osteotomy slotted vane of a traditional split type guide plate is prone to falling off due to vibration of a saw blade is solved, it is guaranteed that the operation process is conducted smoothly, and convenience is provided for doctors.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to osteotomy guide plates. Background Technology

[0002] In knee replacement surgery, when performing tibial osteotomy, a split tibial osteotomy guide is generally used to adjust the amount of osteotomy to achieve the ideal osteotomy for the patient by changing different osteotomy grooves.

[0003] However, in traditional split-type tibial osteotomy guides, the osteotomy groove lacks a fixing device to avoid hindering its flexibility. During osteotomy, the osteotomy groove is prone to dislodging from the fixed guide base due to the vibration of the saw blade in the osteotomy groove, affecting the surgical process. Therefore, there is an urgent need to propose an osteotomy guide with an osteotomy groove that can be easily fixed during use and easily removed during disassembly. Summary of the Invention

[0004] This disclosure provides an osteotomy guide plate that solves the problem in the prior art where the osteotomy groove of a split guide plate is easily dislodged by the vibration of the saw blade.

[0005] This disclosure provides an osteotomy guide plate, including a guide plate base, a fixing pin, an osteotomy groove, and a groove fixing member. The guide plate base is provided with a fixing hole and an installation groove. The fixing pin passes through the fixing hole to fix the guide plate base to the target bone. The installation groove is used to install the osteotomy groove. The groove fixing member is detachably installed on the guide plate base and can switch between a first state and a second state relative to the guide plate base. In the first state, the groove fixing member is used to prevent the osteotomy groove from falling out of the installation groove. In the second state, the groove fixing member allows the osteotomy groove to fall out of the installation groove.

[0006] According to the above embodiments, in a first optional implementation, the slot plate fixing member is rotatably connected to the guide plate base, and the slot plate fixing member rotates relative to the guide plate base to switch between the first state and the second state.

[0007] According to the above embodiments, in the second optional implementation, the slot plate fixing member includes a plate-shaped body with a preset length and a mounting shaft disposed on one side of the body, the mounting shaft being inserted into the guide plate base.

[0008] According to the above embodiments, in the third optional implementation, the slot plate fixing member further includes a toggle part, which is used to receive external force to switch between the first state and the second state.

[0009] According to the above embodiments, in the fourth optional implementation, the actuating part is provided on the side of the main body opposite to the mounting shaft, and the actuating part and the mounting shaft are respectively located at both ends of the length direction of the main body.

[0010] According to the above embodiments, in the fifth optional implementation, the body of the slot fastener is provided with a snap-fit, which is used to engage with the fixing nail in the first state so that the body blocks the osteotomy slot installed in the mounting groove.

[0011] According to the above embodiments, in the sixth optional implementation, the tail portion of the fixing nail is provided with a slot for matching with the bayonet.

[0012] According to the above implementation method, in the seventh optional implementation method, the bayonet is arc-shaped.

[0013] According to the above embodiments, in the eighth optional implementation, the osteotomy slot includes an osteotomy slot and a locking block. The osteotomy slot is used to guide the saw blade, and the locking block is used to match and install with the mounting slot.

[0014] According to the above implementation method, in the ninth optional implementation, the number of fixing nails is at least two.

[0015] Beneficial effects

[0016] The osteotomy guide plate proposed in this disclosure, through the setting of the slotted plate fixing member, allows the slotted plate fixing member relative to the guide plate base to switch between a first state and a second state. In the first state, the slotted plate fixing member prevents the osteotomy slotted plate from dislodging from the mounting slot, while in the second state, the slotted plate fixing member allows the osteotomy slotted plate to dislodge from the mounting slot. This solves the problem of the osteotomy slotted plate being easily dislodged by the vibration of the saw blade in traditional split guide plates, ensuring the smooth progress of the surgical procedure and providing convenience for doctors. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the osteotomy guide plate structure according to an embodiment of the present disclosure. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the osteotomy guide plate structure according to an embodiment of the present disclosure. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the osteotomy guide plate structure when the slotted fastener of this embodiment is in the first state. Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the osteotomy guide plate structure when the slotted fastener of this embodiment is in the first state. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the osteotomy guide plate structure when the slotted plate fixing member of this embodiment is in the second state;

[0022] Figure 6This is a schematic diagram of an osteotomy guide plate structure with two fixing nails installed according to an embodiment of the present disclosure;

[0023] Figure 7 This is a schematic diagram of the slotted fastener structure according to an embodiment of the present disclosure. Figure 1 ;

[0024] Figure 8 This is a schematic diagram of the slotted fastener structure according to an embodiment of the present disclosure. Figure 2 ;

[0025] Reference numerals: 1-guide plate base, 101-fixing hole, 102-mounting groove, 103-mounting hole, 2-fixing nail, 201-first fixing nail, 202-second fixing nail, 203-slot, 3-osteotomy groove, 301-osteotomy groove, 302-slot block, 4-groove piece fixing component, 401-body, 402-mounting shaft, 403-moving part, 404-bayon, 405-notch. Detailed Implementation

[0026] The features and exemplary embodiments of various aspects of this disclosure will now be described in detail. To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, will provide a further detailed description. It should be understood that the specific embodiments described herein are intended to explain this disclosure only and not to limit it. For those skilled in the art, this disclosure can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this disclosure by illustrating examples.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other. The embodiments will now be described in detail with reference to the accompanying drawings.

[0029] In practice, the inventors discovered that when using traditional split-type tibial osteotomy guide plates, the osteotomy groove lacks a fixing device in order not to hinder its flexibility. During the osteotomy process, the osteotomy groove is prone to dislodging from the fixed guide plate base due to the vibration of the saw blade in the osteotomy groove, which affects the surgical process.

[0030] Therefore, this disclosure provides an osteotomy guide plate, with reference to Figures 1-6 The osteotomy guide plate includes a guide plate base 1, a fixing pin 2, an osteotomy groove 3, and a groove fixing member 4. The guide plate base 1 is provided with a fixing hole 101 and an installation groove 102. The fixing pin 2 passes through the fixing hole 101 to fix the guide plate base 1 to the target bone. The installation groove 102 is used to install the osteotomy groove 3. The groove fixing member 4 is detachably installed on the guide plate base 1 and can switch between a first state and a second state relative to the guide plate base 1. In the first state, the groove fixing member 4 is used to prevent the osteotomy groove 3 from coming out of the installation groove 102. In the second state, the groove fixing member 4 allows the osteotomy groove 3 to come out of the installation groove 102.

[0031] Understandably, by switching between the first and second states of the slotted plate fixing component 4, the osteotomy slotted plate 3 can be easily fixed during use and can be promptly removed during disassembly. This solves the problem of the osteotomy slotted plate of traditional split guide plates being easily dislodged by the vibration of the saw blade, ensuring the smooth progress of the operation and providing convenience for doctors.

[0032] Continue to refer to Figures 1-6 The guide plate base 1 is used to connect with the patient's bone during surgery. For example, when preparing the tibial plane, the guide plate base 1 is fixed to the anterior side of the tibia using fixation pins 2. The fixation hole 101 of the guide plate base 1 is a through hole extending from the front and back of the base, and the mounting groove 102 has a "T" shaped cross-section. Furthermore, the guide plate base 1 is also provided with mounting holes 103 parallel to the fixation hole 101.

[0033] The osteotomy groove 3 includes an osteotomy groove 301 and a retaining block 302. The osteotomy groove 301 provides guidance for the saw blade, and the retaining block 302 is used to match and install with the mounting groove 102. Specifically, the cross-section of the retaining block 302 is an inverted "T" shape that matches the cross-section of the mounting groove 102. It can be understood that the osteotomy groove 301 on different models of osteotomy groove 3 has different distances from the guide plate base 1. During surgery, different models of osteotomy groove 3 can be replaced to adapt to different osteotomy volume requirements.

[0034] like Figure 7 and Figure 8 As shown, the slot plate fixing member 4 includes a plate-shaped body 401 with a preset length and a mounting shaft 402 disposed on one side of the body 401. The mounting shaft 402 is inserted into the mounting hole 103 of the guide plate base 1. The slot plate fixing member 4 is rotatably connected to the guide plate base 1 through the mounting hole 103. The slot plate fixing member 4 rotates relative to the guide plate base 1 to switch between the first state and the second state. Figure 3This is a schematic diagram of the slotted plate fixing member 4 in the first state. Figure 5 This is a schematic diagram of the slotted plate fixing member 4 in the second state.

[0035] The slotted plate fixing member 4 also includes a toggle part 403, which is used to receive external force to switch between the first state and the second state. The toggle part 403 is disposed on the side of the body 401 opposite to the mounting shaft 402, and the toggle part 403 and the mounting shaft 402 are respectively located at both ends of the body 401 in the length direction. Figure 7 and Figure 8 As shown, the actuating part 403 is a rod-shaped part perpendicular to the main body 401.

[0036] like Figure 1 and Figure 5 As shown, the tail portion of the first fixing pin 201, located at the end furthest from the mounting shaft 402, is provided with a slot 203. The body 401 of the slot fastener 4 is provided with a latch 404, and the slot 203 is used to mate with the latch 404. The latch 404 is arc-shaped and is used to engage with the first fixing pin 201 in the first state so that the body 401 blocks the osteotomy slot 3 installed in the mounting groove 102.

[0037] To ensure the guide plate base 1 is stably fixed to the patient's bone and prevents loosening after fixation, at least two fixation screws 2 are typically used. This ensures the guide plate base 1 is stably fixed without rotating relative to the bone, achieving a good fixation effect. Understandably, to prevent the osteotomy groove 3 from being affected by the second fixation screw 202 in its first position, a notch 405 is provided on the body 401 that matches the position of the second fixation screw 202 for avoidance.

[0038] Of course, in an optional embodiment (not shown in the figure), the tail of the second fixing pin 202 can also be provided with a groove in the same way as the first fixing pin 201. In this case, the corresponding notch 405 can be set as a snap-fit ​​404, that is, the body 401 of the slotted fastener 4 is provided with two snap-fits 404, and the two snap-fits 404 match the grooves 203 of the two fixing pins 2. In another optional embodiment (not shown in the figure), only the tail of the second fixing pin 202 can be provided with a groove 203, and the corresponding part of the body 401 of the slotted fastener 4 can be provided with a snap-fit ​​404, while the first fixing pin 201 is not provided with a groove 203, and the part of the body 1 of the slotted fastener 4 corresponding to the first fixing pin 201 is provided with a notch 404.

[0039] In actual use, the guide plate base 1 is first fixed to the patient's bone using the fixing pin 2. Then, the osteotomy groove 3 and the groove fixing member 4 are respectively inserted into the guide plate base 1. During osteotomy, the groove fixing member 4 is rotated to the first state by holding the lever 403, that is, the groove fixing member 4 engages with the slot 203 of the pin tail of the fixing pin 2. At this time, the locking block 302 connecting the osteotomy groove 3 and the guide plate base 1 cannot disengage relative to the mounting slot 102, thus fixing the osteotomy groove 3 relative to the guide plate base 1. Furthermore, while the saw blade extends into the osteotomy groove 301 to perform osteotomy, it also prevents the groove fixing member 4 from rotating to the second state. Similarly, after the osteotomy is completed, the saw blade is pulled out, and the groove fixing member 4 is rotated to the second state to disassemble the osteotomy groove 3.

[0040] In summary, the osteotomy guide plate proposed in this disclosure, through the setting of the grooved fixing member 4, allows the grooved fixing member 4 to switch between a first state and a second state relative to the guide plate base 1. In the first state, the grooved fixing member 4 prevents the osteotomy groove 3 from dislodging from the mounting groove 102, while in the second state, the grooved fixing member 4 allows the osteotomy groove 3 to dislodge from the mounting groove 102. This solves the problem of the osteotomy groove being easily dislodged by the vibration of the saw blade in traditional split guide plates, ensuring the smooth progress of the operation and providing convenience for doctors.

[0041] Although this disclosure has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, such modifications or improvements made without departing from the spirit of this disclosure are all within the scope of protection claimed by this disclosure.

Claims

1. An osteotomy guide plate, characterized in that, Includes guide plate base, fixation nails, osteotomy groove, and groove fixation components; The guide plate base is provided with a fixing hole and an installation groove. The fixing nail passes through the fixing hole to fix the guide plate base to the target bone. The installation groove is used to install the osteotomy groove piece. The slotted plate fixing member is detachably installed on the guide plate base and can switch between a first state and a second state relative to the guide plate base. In the first state, the slotted plate fixing member is used to prevent the osteotomy slotted plate from coming out of the mounting slot, while in the second state, the slotted plate fixing member allows the osteotomy slotted plate to come out of the mounting slot.

2. The osteotomy guide plate according to claim 1, characterized in that, The slotted plate fixing member is rotatably connected to the guide plate base, and the slotted plate fixing member rotates relative to the guide plate base to switch between the first state and the second state.

3. The osteotomy guide plate according to claim 2, characterized in that, The slotted plate fixing component includes a plate-shaped body with a preset length and a mounting shaft disposed on one side of the body, the mounting shaft being inserted into the guide plate base.

4. The osteotomy guide plate according to claim 3, characterized in that, The slotted plate fixing component also includes a toggle part, which is used to receive external force to switch between the first state and the second state.

5. The osteotomy guide plate according to claim 4, characterized in that, The actuating part is disposed on the side of the main body opposite to the mounting shaft, and the actuating part and the mounting shaft are respectively located at both ends of the length direction of the main body.

6. The osteotomy guide plate according to claim 3, characterized in that, The body of the groove fastener is provided with a snap-fit, which is used to engage with the fixing nail in the first state so that the body blocks the osteotomy groove installed in the mounting groove.

7. The osteotomy guide plate according to claim 6, characterized in that, The tail portion of the fixing nail is provided with a slot, which is used to match the bayonet.

8. The osteotomy guide plate according to claim 6, characterized in that, The bayonet is arc-shaped.

9. The osteotomy guide plate according to claim 1, characterized in that, The bone-cutting groove includes a bone-cutting groove and a locking block. The bone-cutting groove is used to guide the saw blade, and the locking block is used to match and install with the mounting groove.

10. The osteotomy guide plate according to claim 1, characterized in that, The number of fixing pins is at least two.

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