Osteotomy guide plate and osteotomy system

Abstract

The present invention provides an osteotomy guide plate and an osteotomy system, the osteotomy guide plate comprising: a guide plate body, on which a saw blade groove for osteotomy is arranged; a slide groove, which is arranged through the front surface and the rear surface of the guide plate body, and a plurality of first arc grooves are arranged on the inner wall of the slide groove; a slider, which is slidably arranged in the slide groove, and a plurality of second arc grooves are arranged on the slider, each of which can correspond to one of the first arc grooves to form a circular hole; a control device, which is connected to the slider and can drive the slider to reciprocate in the slide groove to close or open the channel between adjacent circular holes. The osteotomy system comprises the above-mentioned osteotomy guide plate. The osteotomy guide plate of the present invention can realize rapid adjustment of the position of the osteotomy guide plate without having to be removed from the positioning pin and then fixed, which simplifies the steps of removing and re-fixing the osteotomy guide plate and reduces the operation time.

Description

Technical Field

[0001] The invention belongs to the technical field of surgical instruments, and in particular relates to an osteotomy guide plate and an osteotomy system. Background Art

[0002] During knee surgery, the joint surface needs to be properly osteotomized to meet the matching requirements of a specific prosthesis. Traditional osteotomy guides have positioning holes on their surface, and the positioning holes are roughly positioned with positioning pins inserted into the bone surface. If the positioning is not ideal, the osteotomy guide needs to be removed and the positioning pins and the positioning holes need to be readjusted to find the ideal osteotomy surface. This positioning method is time-consuming and labor-intensive, and is not conducive to shortening the operation time.

[0003] Therefore, there is an urgent need for an osteotomy guide plate and an osteotomy system to solve the problem that the above-mentioned osteotomy guide plate is time-consuming and labor-intensive in positioning the osteotomy surface. Summary of the invention

[0004] The invention provides an osteotomy guide plate, which does not need to be removed when adjusting and positioning an osteotomy surface, thereby realizing rapid adjustment of an osteotomy position.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An osteotomy guide plate, comprising:

[0007] A guide plate body, on which a saw blade groove for osteotomy is provided;

[0008] A slide groove is provided through the front surface and the rear surface of the guide plate body, and a plurality of first arc grooves are provided on the inner wall of the slide groove;

[0009] A slider is slidably disposed in the slide groove, and a plurality of second arc grooves are disposed on the slider, each of the second arc grooves being able to correspond to one of the first arc grooves to form a circular hole;

[0010] A control device is connected to the slider and can drive the slider to move back and forth in the slide slot to close or open the channel between adjacent circular holes.

[0011] As a preferred solution of the above-mentioned osteotomy guide plate, the control device includes a connecting rod mechanism and a positioning mechanism, the connecting rod mechanism is connected to the slider, the positioning mechanism is fixed on the guide plate body, the connecting rod mechanism is hinged to the positioning mechanism, and the positioning mechanism can fix the position of the connecting rod mechanism.

[0012] As a preferred solution of the above-mentioned osteotomy guide plate, the positioning mechanism:

[0013] A base, which is fixed to the side of the guide plate body and is provided with a first clamping structure;

[0014] A handle, whose rotation center is hinged to a pillar of the guide plate body, and the handle is hinged to the connecting rod mechanism at a position deviating from the rotation center. A second clamping structure that can be clamped with the first clamping structure is provided on the end surface of the handle that contacts the base. The first clamping structure and the second clamping structure can fix the position of the handle after being clamped.

[0015] As a preferred solution of the above-mentioned osteotomy guide plate, the first clamping structure includes a groove opened inwardly from the side of the base that contacts the handle, a spring is fixedly connected to the bottom of the groove, and a bayonet is connected to the top of the spring.

[0016] As a preferred solution of the above-mentioned osteotomy guide plate, the second clamping structure includes two spaced-apart clamping grooves provided at the end of the handle, and when the clamping pin is opposite to one of the clamping grooves, the clamping pin can be clamped into the clamping groove.

[0017] As a preferred embodiment of the above-mentioned osteotomy guide plate, the connecting rod mechanism includes a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is connected to the slider, one end of the third connecting rod is hinged to the handle, and both ends of the second connecting rod are respectively hinged to the other end of the first connecting rod and the other end of the third connecting rod.

[0018] As a preferred solution of the above-mentioned osteotomy guide plate, the number of the slide grooves is two or more, and one sliding block is arranged in each of the slide grooves.

[0019] As a preferred solution of the above-mentioned osteotomy guide plate, the first connecting rod is connected to each of the sliding blocks.

[0020] As a preferred solution of the above-mentioned osteotomy guide plate, three first arc grooves arranged at intervals are arranged in each of the slide grooves.

[0021] An osteotomy system comprises the above-mentioned osteotomy guide plate, and the osteotomy system also comprises a positioning pin. When the channel between the adjacent circular holes is opened, the positioning pin can pass through the channel.

[0022] The advantages and positive effects of the present invention are:

[0023] The osteotomy guide in this embodiment is driven by a control device to move the slider, thereby controlling the closing and opening states of the channel between the circular holes. When the channel is closed, the positioning pin is inserted into the circular hole and fixed on the bone cortex to preliminarily locate the position of the osteotomy guide. If the position of the osteotomy surface needs to be adjusted after the preliminary positioning, the control device drives the slider to slide to open the channel, and the positioning pin remains at its position on the bone cortex. By moving the osteotomy guide, the position of the circular hole is changed relative to the positioning pin, and then the channel is closed again, thereby realizing the rapid adjustment of the position of the osteotomy guide without having to remove the osteotomy guide from the positioning pin and re-fixing it, thereby simplifying the steps of removing and re-fixing the osteotomy guide and reducing the operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the structure when the channels between adjacent circular holes on the osteotomy guide plate in this embodiment are closed;

[0025] Figure 2 is a schematic diagram of the structure when the channels between adjacent circular holes on the osteotomy guide plate of the present embodiment are opened;

[0026] Figure 3 yes Figure 1 Top view of the middle osteotomy guide;

[0027] Figure 4 yes Figure 3 Schematic diagram of the cross section along the AA direction;

[0028] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle.

[0029] In the figure:

[0030] 1. Guide plate body; 2. Slide groove; 3. Slider; 4. Connecting rod mechanism; 5. Positioning mechanism; 6. Round hole;

[0031] 11. saw blade groove; 21. first arc groove; 31. second arc groove;

[0032] 41. first connecting rod; 42. second connecting rod; 43. third connecting rod;

[0033] 51, base; 511, groove; 512, spring; 513, latch; 514, arc groove;

[0034] 52. handle; 521. card slot. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The embodiments of the present invention are further described below in conjunction with the accompanying drawings:

[0039] like Figure 1 and Figure 2 As shown, this embodiment provides an osteotomy guide plate, which includes a guide plate body 1, a slide 2, a slider 3 and a control device. The guide plate body 1 is provided with a saw blade groove 11 for osteotomy. The slide 2 is provided through the front surface and the rear surface of the guide plate body 1, and a plurality of first arc grooves 21 are provided on the inner wall of the slide 2. The front surface and the rear surface of the guide plate body 1 are two opposite surfaces away from the bone and close to the bone respectively when in use.

[0040] The slide block 3 is slidably disposed in the slide groove 2, and a plurality of second arc grooves 31 are disposed on the slide block 3, and each second arc groove 31 can correspond to one of the first arc grooves 21 to form a circular hole 6. When the positioning pin is used to determine the osteotomy surface, when the osteotomy surface is positioned, the positioning pin is inserted into the circular hole 6 and fixed on the bone cortex.

[0041] In this embodiment, the control device of the osteotomy guide plate is connected to the slider 3 and can drive the slider 3 to move back and forth in the slide groove 2 to close or open the channel between adjacent circular holes 6.

[0042] Reference Figure 1 and Figure 2 The osteotomy guide in this embodiment drives the slider 3 to move through the control device, thereby controlling the closing and opening states of the channel between the circular holes 6. When the channel is closed, the positioning pin is inserted into the circular hole 6 and fixed on the bone cortex to preliminarily locate the position of the osteotomy guide. If the position of the osteotomy surface needs to be adjusted after the preliminary positioning of the osteotomy guide, the slider 3 is driven by the control device to slide to open the channel, and the positioning pin remains at its position on the bone cortex. By moving the osteotomy guide, the position of the circular hole 6 is changed relative to the positioning pin, and then the channel is closed again. In this way, the position of the osteotomy guide does not need to be removed from the positioning pin and re-fixed, and the position of the osteotomy guide can be quickly adjusted, thereby simplifying the steps of removing and re-fixing the osteotomy guide and reducing the operation time.

[0043] In this embodiment, the control device includes a connecting rod mechanism 4 and a positioning mechanism 5. The connecting rod mechanism 4 is connected to the slider 3, and the positioning mechanism 5 is fixed on the guide plate body 1. The connecting rod mechanism 4 and the positioning mechanism 5 are hinged, and the positioning mechanism 5 can fix the position of the connecting rod mechanism 4.

[0044] The positioning mechanism 5 includes a base 51 and a handle 52, wherein the base 51 is fixed to the side of the guide plate body 1, and a first clamping structure is provided on the base 51. The rotation center of the handle 52 is hinged to a pillar of the guide plate body, and the position of the handle 52 deviating from the rotation center is hinged to the connecting rod mechanism 4. The end surface of the handle 52 in contact with the base 51 is provided with a second clamping structure that can be clamped with the first clamping structure. After the first clamping structure and the second clamping structure are clamped, the position of the handle 52 can be fixed.

[0045] Reference Figure 3 , Figure 4 and Figure 5 Specifically, the first clamping structure includes a groove 511 formed inwardly on the side of the base 51 that contacts the handle 52, a spring 512 is fixedly connected to the bottom of the groove 511, and a latch 513 is connected to the top of the spring 512. The second clamping structure includes two spaced-apart clamping grooves 521 provided at the end of the handle 52, and when the latch 513 is opposite to one of the clamping grooves 521, the latch 513 can be partially inserted into the clamping groove 521. When the two clamping grooves 521 are respectively matched with the latch 513, the handle 52 no longer rotates, and the slider 3 slides to the position where the passage of the adjacent circular holes 6 in the slide groove 2 is opened or closed and remains stationary, thereby ensuring that the passage between the adjacent circular holes 6 is in a stable state of being opened or closed.

[0046] In this embodiment, the latch 513 is spherical, and the latch 513 can be set to other shapes according to specific needs.

[0047] In other embodiments, the first clamping structure and the second clamping structure may also be in other forms, as long as the slider 3 can remain stationary at the position where the passages of the adjacent circular holes 6 are opened or closed.

[0048] Reference Figure 4 In this embodiment, an arc groove 514 is provided on the base 51 , the end surface of the handle 52 in contact with the arc groove 514 is an arc surface, and the end surface of the handle 52 is arranged in close contact with the arc groove 514 , and the groove 511 is arranged inwardly in the arc groove 514 .

[0049] In this embodiment, if Figure 1 and Figure 2 As shown, the link mechanism 4 includes a first link 41, a second link 42 and a third link 43, one end of the first link 41 is connected to the slider 3, one end of the third link 43 is hinged to a handle 52, and both ends of the second link 42 are respectively hinged to the other end of the first link 41 and the other end of the third link 43. When the handle 52 is rotated, the slider 3 is driven to slide in the slide groove 2 through the first link 41, the second link 42 and the third link 43 of the link mechanism 4.

[0050] In this embodiment, the number of the slide grooves 2 is two. According to the need of adjusting or positioning the osteotomy surface, the number of the slide grooves 2 can be set to three or more, and a sliding block 3 is arranged in each slide groove 2.

[0051] The first connecting rod 41 is connected to each slider 3, so that the sliders 3 can be driven to slide simultaneously by the first connecting rod 41 to ensure that the sliding of the sliders 3 in different slide grooves 2 remains synchronized, so that when the positioning needle is locating the position of the osteotomy guide or adjusting the position of the osteotomy guide, the circular holes 6 in various places can remain consistent.

[0052] Three first circular arc grooves 21 are arranged at intervals in each slide groove 2. The three first circular arc grooves 21 are connected in pairs to form a triangle, thereby ensuring that the osteotomy guide plate can be adjusted in the horizontal and vertical directions relative to the positioning needle.

[0053] This embodiment also provides an osteotomy system, including the above-mentioned osteotomy guide plate. The osteotomy system also includes a positioning pin. When the channel between adjacent circular holes 6 is opened, the positioning pin can pass through the channel.

[0054] When the osteotomy guide plate and the positioning pin are used to determine the osteotomy surface, the passages between the adjacent circular holes 6 on the osteotomy guide plate are first closed, and the bayonet 513 on the base 51 is inserted into the corresponding slot 521 of the handle 52, the position of the slider 3 is fixed, and the positioning pin is passed through the cortical bone fixed by the circular hole 6 to confirm whether the osteotomy surface is suitable; if adjustment is required, the handle 52 is rotated so that the bayonet 513 is inserted into another slot 521 of the handle 52, the position of the slider 3 is fixed, so that the passage between the adjacent circular holes 6 is opened, and then the guide plate body 1 is moved to move the positioning pin to the circular hole 6 at other suitable positions, and then the handle 52 is rotated in the opposite direction to close the passage between the adjacent circular holes 6 to complete the positioning of the osteotomy surface. If multiple positioning pins are used, the positions of the multiple positioning pins can be adjusted at the same time. In this process, there is no need to remove the osteotomy guide plate from the positioning pin and re-fix it. It is only necessary to rotate the handle 52 and move the guide plate body 1, so that the osteotomy position can be quickly adjusted, the operation is convenient, and the operation time is short, which can effectively reduce the operation time.

[0055] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An osteotomy guide plate, characterized in that: include: A guide plate body (1) having a saw blade groove (11) for osteotomy provided thereon; A slide groove (2) is provided through the front surface and the rear surface of the guide plate body (1), and a plurality of first arc grooves (21) are provided on the inner wall of the slide groove (2); A sliding block (3) is slidably disposed in the sliding groove (2), and a plurality of second arc grooves (31) are disposed on the sliding block (3), and each of the second arc grooves (31) can correspond to one of the first arc grooves (21) to form a circular hole (6); a control device connected to the slider (3) and capable of driving the slider (3) to move back and forth in the slide groove (2) so as to close or open the passage between adjacent circular holes (6); The control device comprises a connecting rod mechanism (4) and a positioning mechanism (5), wherein the connecting rod mechanism (4) is connected to the slider (3), the positioning mechanism (5) is fixed to the guide plate body (1), the connecting rod mechanism (4) is hinged to the positioning mechanism (5), and the positioning mechanism (5) is capable of fixing the position of the connecting rod mechanism (4); The positioning mechanism (5) comprises: A base (51) fixed to a side surface of the guide plate body (1), and a first clamping structure is provided on the base (51); A handle (52) having a rotation center hinged to a support column of the guide plate body (1); the handle (52) is hinged to the connecting rod mechanism (4) at a position deviating from the rotation center; a second clamping structure capable of being clamped to the first clamping structure is provided on the end surface of the handle (52) in contact with the base (51); and the first clamping structure and the second clamping structure are clamped to fix the position of the handle (52).

2. The osteotomy guide plate according to claim 1, characterized in that: The first clamping structure comprises a groove (511) formed inwardly on a side of the base (51) in contact with the handle (52), a spring (512) being fixedly connected to the bottom of the groove (511), and a clamping pin (513) being connected to the top of the spring (512).

3. The osteotomy guide plate according to claim 2, characterized in that: The second locking structure comprises two locking grooves (521) arranged at intervals at the end of the handle (52); when the locking pin (513) is opposite to one of the locking grooves (521), the locking pin (513) can be locked into the locking groove (521).

4. The osteotomy guide plate according to claim 1, characterized in that: The connecting rod mechanism (4) comprises a first connecting rod (41), a second connecting rod (42) and a third connecting rod (43); one end of the first connecting rod (41) is connected to the slider (3); one end of the third connecting rod (43) is hinged to the handle (52); and two ends of the second connecting rod (42) are respectively hinged to the other end of the first connecting rod (41) and the other end of the third connecting rod (43).

5. The osteotomy guide plate according to claim 4, characterized in that: The number of the slide grooves (2) is two or more, and a sliding block (3) is arranged in each of the slide grooves (2).

6. The osteotomy guide plate according to claim 4, characterized in that: The first connecting rod (41) is connected to each of the sliding blocks (3).

7. The osteotomy guide plate according to claim 5, characterized in that: Each of the slide grooves (2) is provided with three first arc grooves (21) arranged at intervals.

8. An osteotomy system, characterized in that: The osteotomy guide plate comprises any one of claims 1 to 7, wherein the osteotomy system further comprises a positioning pin, and when the channel between adjacent circular holes (6) is opened, the positioning pin can pass through the channel.

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