Osteotomy guider for distal femur osteotomy

Abstract

The utility model relates to an osteotomy guider for distal femur osteotomy, which comprises an osteotomy guiding piece, a distal positioning piece, a proximal positioning piece and a closed guiding piece, and an osteotomy groove is arranged on the osteotomy guiding piece and is used for guiding osteotomy; the far-end positioning piece and the near-end positioning piece are arranged on the left side and the right side of the osteotomy guiding piece respectively and are detachably connected with the osteotomy guiding piece, the osteotomy guiding piece is used for connecting the far-end positioning piece and the near-end positioning piece, and the far-end positioning piece and the near-end positioning piece are arranged at the two ends of an area to be subjected to osteotomy; the closing guide piece is detachably connected with the far-end positioning piece and the near-end positioning piece, and after osteotomy is completed, the closing guide piece is used for guiding osteotomy closing. Compared with the prior art, the osteotomy guider is simple in structure and convenient to operate, and the thighbone is fitted through the fitting areas of the osteotomy guiding piece, the far-end positioning piece and the near-end positioning piece.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially is related to a kind of osteotomy guide for femur distal osteotomy. BACKGROUND

[0002] Knee joint osteoarthritis is common disease, frequently-occurring disease, and more than 65 years old in elderly population, more than 50% incidence of disease, and knee joint surface replacement is the final effective means for treating knee joint osteoarthritis, which restores joint movement by installing artificial joint implant after osteotomy, greatly improves the quality of life of patients, for femur distal wear surface, to reconstruct femur distal articular surface, the articular surface of femur distal needs to be resected by doctor, and artificial joint prosthesis is installed, so that patients can stand again and walk normally.

[0003] In traditional knee replacement, doctors usually set femur distal osteotome on the distal femur of patients according to their own experience, and then set femur force line inspection device on femur distal osteotome to verify femoral mechanical axis to confirm whether the installation position of femur distal osteotome is appropriate, and then adjust femur distal osteotome to the appropriate position to guide doctors to complete femur distal osteotomy operation, so as to ensure that the lower limbs can restore normal joint movement after assembling artificial joint prosthesis after completing femur distal osteotomy operation.

[0004] DFO (Distal Femoral Osteotomy) femur distal osteotomy is a surgical operation for correcting knee joint deformity, but there is currently a lack of osteotomy guide for assisting femur distal osteotomy. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of osteotomy guide for femur distal osteotomy, the osteotomy guide simple structure, it is convenient to operate, by fitting area of osteotomy guide piece, distal positioning piece and proximal positioning piece, fitting is carried out to femur, so as not to measure, directly realize osteotomy guide, further increase the convenience and accuracy of osteotomy.

[0006] The utility model can be realized by the following technical scheme:

[0007] A kind of osteotomy guide for femur distal osteotomy, including osteotomy guide piece, distal positioning piece, proximal positioning piece and closure guide piece,

[0008] The osteotomy guide piece is equipped with osteotomy groove, and the osteotomy groove is used to guide osteotomy;

[0009] The far end positioning member and the near end positioning member are respectively arranged on the left and right sides of the osteotomy guide, and the far end positioning member and the near end positioning member are detachably connected with the osteotomy guide, the osteotomy guide is used for connecting the far end positioning member and the near end positioning member, and the far end positioning member and the near end positioning member are arranged at the two ends of the region to be osteotomized.

[0010] The closing guide is detachably connected with the far end positioning member and the near end positioning member, and the closing guide is used for guiding the osteotomy closure after the osteotomy is completed.

[0011] As a preferred technical scheme, the far end positioning member and the near end positioning member are located on the two sides of the osteotomy groove on the osteotomy guide in the connected state, and do not coincide with the osteotomy groove.

[0012] In an embodiment of the utility model, the osteotomy guide includes a main plate and a connecting plate, the main plate is provided with an osteotomy groove,

[0013] The connecting plate is provided with a near end positioning end and a far end positioning end at the left and right ends respectively, the far end positioning member is detachably connected with the far end positioning end, and the near end positioning member is detachably connected with the near end positioning end.

[0014] As a preferred technical scheme, the main plate and the connecting plate are integrally formed.

[0015] In an embodiment of the utility model, the far end positioning member is provided with a far end recess on one side, the near end positioning member is provided with a near end recess on one side,

[0016] The far end positioning end is connected with the far end recess, and the near end positioning end is connected with the near end recess.

[0017] In an embodiment of the utility model, the near end positioning end is provided with a near end positioning column, and the far end positioning end is provided with a far end positioning column,

[0018] The far end recess is provided with a far end positioning groove, and the near end recess is provided with a near end positioning groove,

[0019] The far end positioning column is inserted into the far end positioning groove, and the near end positioning column is inserted into the near end positioning groove.

[0020] As a preferred technical scheme, the far end recess is arranged on the far end positioning member and is arranged on the side of the far end positioning member facing the near end recess, and reaches the edge position of the far end positioning member, so as to form a semirecessed structure, and the opening of the semirecessed structure faces the direction of the near end recess;

[0021] The far end recess is provided with a far end positioning groove, and the far end positioning groove is a non-through circular hole and is matched with the shape of the far end positioning column.

[0022] As a preferred technical scheme, the proximal recess is arranged on the proximal positioning member and on the side thereof facing the distal recess, and extends to the edge of the proximal positioning member, forming a semi-recessed structure, and the opening of the semi-recessed structure faces the distal recess.

[0023] The proximal positioning groove is a non-through circular hole and is matched with the shape of the proximal positioning column.

[0024] In an embodiment of the utility model, the bone cutting guide further comprises a fixing plate and a first fixing column,

[0025] The left and right sides of the main plate are each provided with a fixing plate, the left and right sections of the main plate are each provided with a first through hole, each of the fixing plates is provided with a second through hole, and the first fixing column passes through the first through hole and the second through hole in sequence and is fixed to the femur.

[0026] In an embodiment of the utility model, the middle part of the distal positioning member is provided with a distal positioning hole, the middle part of the proximal positioning member is provided with a proximal positioning hole, and the first fixing column passes through the distal positioning hole and the proximal positioning hole respectively and fixes the distal positioning member and the proximal positioning member to the two ends of the bone cutting region.

[0027] In an embodiment of the utility model, the closure guide comprises a fixing part and a guiding part which are separated from each other, the fixing part is detachably connected with the distal positioning member, and the guiding part is detachably connected with the proximal positioning member.

[0028] In an embodiment of the utility model, the side surface of the fixing part is provided with an extension handle, the side surface of the guiding part is provided with a guiding groove, and the extension handle end is matched with the guiding groove.

[0029] In an embodiment of the utility model, the closure guide further comprises a second fixing column,

[0030] The fixing part and the guiding part are each provided with a guiding hole,

[0031] The middle part of the distal positioning member is provided with a distal positioning hole, and the middle part of the proximal positioning member is provided with a proximal positioning hole,

[0032] The second fixing column passes through the guiding hole and the distal positioning hole or the proximal positioning hole in sequence and is fixed to the femur.

[0033] In an embodiment of the utility model, the closure guide further comprises a fixing part, the fixing part is arranged on the back surface of the fixing part, and the fixing part is used for clamping with the distal recess.

[0034] Compared with the prior art, the utility model has the following beneficial effects:

[0035] 1. The bone cutting guide for distal femur cutting of the present application sets the bone cutting guide and the distal proximal positioning member, thereby guiding the distal femur cutting and realizing high-precision cutting.

[0036] 2. The bone cutting guide for distal femur cutting of the present application sets the bone cutting guide, the distal positioning member and the proximal positioning member, thereby fitting the femur without measurement, directly realizing the cutting guide and further increasing the convenience and accuracy of cutting.

[0037] 3. The bone cutting guide for distal femur cutting of the present application first fixes the bone cutting guide, the distal positioning member and the proximal positioning member to the cutting area, uses the cutting groove to cut, removes the bone cutting guide after cutting, connects the closing guide with the distal positioning member and the proximal positioning member, and guides the cutting closing. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is a front view structural schematic diagram of the bone cutting guide in the present application;

[0039] Figure 2 It is a back view structural schematic diagram of the bone cutting guide in the present application;

[0040] Figure 3 It is an oblique view structural schematic diagram of the bone cutting guide in the present application;

[0041] Figure 4 It is a front view structural schematic diagram of the distal positioning member and the proximal positioning member in the present application;

[0042] Figure 5 It is a back view structural schematic diagram of the distal positioning member and the proximal positioning member in the present application;

[0043] Figure 6 It is a combination structural schematic diagram of the bone cutting guide, the distal positioning member and the proximal positioning member in the present application;

[0044] Figure 7 It is a whole assembly structural schematic diagram of the bone cutting guide, the distal positioning member and the proximal positioning member in the present application;

[0045] Figure 8 It is a use structural schematic diagram of the bone cutting guide, the distal positioning member and the proximal positioning member in the present application;

[0046] Figure 9 It is a front view structural schematic diagram of the closing guide in the present application;

[0047] Figure 10 It is a back view structural schematic diagram of the closing guide in the present application;

[0048] Figure 11 It is the combination structure schematic view of the closure guide, the distal end positioning member and the proximal end positioning member in the utility model;

[0049] Figure 12 It is the integral assembly structure schematic view of the closure guide, the distal end positioning member and the proximal end positioning member in the utility model;

[0050] Figure 13 It is the use structure schematic view of the closure guide, the distal end positioning member and the proximal end positioning member in the utility model.

[0051] The drawing number explanation: 1, osteotomy guide, 11, osteotomy slot, 12, main body plate, 13, distal end positioning end, 14, distal end positioning column, 15, proximal end positioning end, 16, proximal end positioning column, 17, connecting plate, 18, fixed plate, 19, first fixed column, 2, distal end positioning member, 21, distal end recess, 22, distal end positioning slot, 23, distal end positioning hole, 3, proximal end positioning member, 31, proximal end recess, 32, proximal end positioning slot, 33, proximal end positioning hole, 4, closure guide, 41, fixed part, 42, extension handle, 43, limiting member, 44, second fixed column, 45, guide part, 46, guide slot, 47, guide hole. DETAILED DESCRIPTION

[0052] The utility model will be described in detail below in combination with the drawings and specific embodiments. The embodiment is implemented on the premise of the technical scheme of the utility model, and detailed implementation mode and specific operation process are given, but the protection scope of the utility model is not limited to the following examples.

[0053] It should be noted that: similar signs and letters indicate similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0054] In the description of the utility model, it should be explained that, the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0055] In the description of the utility model, it is to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two element internal communication。For ordinary skilled person in the art, the above-mentioned term can be understood according to the specific meaning of the utility model.

[0056] Some embodiments of the utility model are described in detail below in conjunction with the drawings.In the case of no conflict, the following examples and features in examples can be combined with each other.

[0057] Embodiment

[0058] Reference Figures 1 to 13 The embodiment provides a bone cutting guide for distal femur osteotomy, including bone cutting guide 1, distal positioning piece 2, proximal positioning piece 3 and closure guide 4,

[0059] The bone cutting guide 1 is provided with bone cutting groove 11, and the bone cutting groove 11 is used to guide bone cutting;

[0060] The distal positioning piece 2 and the proximal positioning piece 3 are respectively arranged on the left and right sides of the bone cutting guide 1, the distal positioning piece 2 and the proximal positioning piece 3 are detachably connected with the bone cutting guide 1, the bone cutting guide 1 is used to connect the distal positioning piece 2 and the proximal positioning piece 3, and the distal positioning piece 2 and the proximal positioning piece 3 are arranged at the two ends of the bone cutting area;

[0061] The closure guide 4 is detachably connected with the distal positioning piece 2 and the proximal positioning piece 3, and the closure guide 4 is used to guide bone cutting closure when bone cutting is completed.

[0062] In the embodiment, the bone cutting guide 1 includes main body plate 12 and connecting plate 17, the main body plate 12 is provided with bone cutting groove 11,

[0063] The main body plate 12 is provided with connecting plate 17, the left and right ends of the connecting plate 17 are respectively provided with proximal positioning end 15 and distal positioning end 13, the distal positioning piece 2 is detachably connected with the distal positioning end 13, and the proximal positioning piece 3 is detachably connected with the proximal positioning end 15.

[0064] In the embodiment, the main body plate 12 and the connecting plate 17 are integrally formed.

[0065] In the embodiment, one side of the distal positioning piece 2 is provided with distal recess 21, and one side of the proximal positioning piece 3 is provided with proximal recess 31,

[0066] The distal positioning end 13 is connected with the distal recess 21, and the proximal positioning end 15 is connected with the proximal recess 31.

[0067] In the embodiment, the proximal positioning end 15 is provided with a proximal positioning column 16, and the distal positioning end 13 is provided with a distal positioning column 14.

[0068] The distal recess 21 is provided with a distal positioning groove 22, and the proximal recess 31 is provided with a proximal positioning groove 32.

[0069] The distal positioning column 14 is inserted into the distal positioning groove 22, and the proximal positioning column 16 is inserted into the proximal positioning groove 32.

[0070] In the embodiment, the osteotomy guide 1 further comprises a fixing plate 18 and a first fixing column 19.

[0071] The fixing plate 18 is arranged on the left and right sides of the main plate 12, and the first fixing column 19 passes through the first through hole and the second through hole and is fixed on the femur.

[0072] In the embodiment, the distal positioning member 2 is provided with a distal positioning hole 23 in the middle, the proximal positioning member 3 is provided with a proximal positioning hole 33 in the middle, and the first fixing column 19 passes through the distal positioning hole 23 and the proximal positioning hole 33 respectively to fix the distal positioning member 2 and the proximal positioning member 3 on both ends of the osteotomy region.

[0073] In the embodiment, the closure guide 4 comprises a fixing part 41 and a guiding part 45 which are separated from each other, the fixing part 41 is detachably connected with the distal positioning member 2, and the guiding part 45 is detachably connected with the proximal positioning member 3.

[0074] In the embodiment, the fixing part 41 is provided with an extension handle 42 on the side surface, the guiding part 45 is provided with a guiding groove 46 on the side surface, and the extension handle 42 is matched with the guiding groove 46.

[0075] In the embodiment, the closure guide 4 further comprises a second fixing column 44.

[0076] The guiding hole 47 is arranged on the fixing part 41 and the guiding part 45.

[0077] The distal positioning member 2 is provided with a distal positioning hole 23 in the middle, and the proximal positioning member 3 is provided with a proximal positioning hole 33 in the middle.

[0078] The second fixing column 44 passes through the guiding hole 47 and the distal positioning hole 23 or the proximal positioning hole 33 in sequence and is fixed on the femur.

[0079] In the present embodiment, the closure guide 4 further comprises a fixing member 43 arranged on the back of the fixing portion 41, which is used for clamping with the distal recess 21.

[0080] The above description of the embodiments is to facilitate the ordinary skilled in the art to understand and use the utility model. The person skilled in the art can obviously easily make various modifications to these embodiments, and apply the general principles described herein to other embodiments without having to go through creative labor. Therefore, the utility model is not limited to the above embodiments, and the improvements and modifications made by the person skilled in the art according to the disclosure of the utility model without departing from the scope of the utility model should be within the protection scope of the utility model.

Claims

1. An osteotomy guide for use in an osteotomy of the distal end of a femur, the guide comprising: The application relates to an osteotomy guiding device, which comprises an osteotomy guide (1), a distal positioning member (2), a proximal positioning member (3) and a closure guide (4). The osteotomy guide (1) is provided with an osteotomy groove (11) for guiding osteotomy. The distal positioning member (2) and the proximal positioning member (3) are arranged on the left and right sides of the osteotomy guide (1) respectively, and are detachably connected with the osteotomy guide (1). The closure guide (4) is detachably connected with the distal positioning member (2) and the proximal positioning member (3), and is used for guiding osteotomy closure after the osteotomy is completed.

2. The osteotomy guide for use in distal femoral osteotomy according to claim 1, characterized in that The osteotomy guide (1) comprises a main plate (12) and a connecting plate (17), and the main plate (12) is provided with the osteotomy groove (11). The main plate (12) is provided with the connecting plate (17) above, and the connecting plate (17) is provided with a proximal positioning end (15) and a distal positioning end (13) at the left and right ends respectively.

3. The osteotomy guide for use in distal femoral osteotomies of claim 2, wherein, The distal positioning member (2) is provided with a distal recess (21) on one side, and the proximal positioning member (3) is provided with a proximal recess (31) on one side. The distal positioning end (13) is connected with the distal recess (21), and the proximal positioning end (15) is connected with the proximal recess (31).

4. The osteotomy guide for use in distal femoral osteotomies of claim 3, wherein, The proximal positioning end (15) is provided with a proximal positioning column (16), and the distal positioning end (13) is provided with a distal positioning column (14). The distal recess (21) is provided with a distal positioning groove (22), and the proximal recess (31) is provided with a proximal positioning groove (32). The distal positioning column (14) is inserted into the distal positioning groove (22), and the proximal positioning column (16) is inserted into the proximal positioning groove (32).

5. The osteotomy guide for use in distal femoral osteotomies of claim 2, wherein, The osteotomy guide (1) further comprises a fixing plate (18) and a first fixing column (19). The main plate (12) is provided with one fixing plate (18) on the left and right sides, and is provided with one first through hole on the left and right sections.

6. The osteotomy guide for use in distal femoral osteotomies of claim 5, wherein, The distal positioning member (2) is provided with a distal positioning hole (23) in the middle, and the proximal positioning member (3) is provided with a proximal positioning hole (33) in the middle.

7. The osteotomy guide for use in distal femoral osteotomies of claim 3, wherein, The first fixing column (19) is arranged to pass through the distal positioning hole (23) and the proximal positioning hole (33) respectively, so as to fix the distal positioning member (2) and the proximal positioning member (3) on the two ends of the osteotomy area. The closure guide (4) comprises a fixing part (41) and a guiding part (45) which are separated from each other. The fixing part (41) is detachably connected with the distal positioning member (2), and the guiding part (45) is detachably connected with the proximal positioning member (3).

8. The osteotomy guide for use in distal femoral osteotomies of claim 7, wherein, The fixed part (41) is provided with an extension handle (42) on one side, the guide part (45) is provided with a guide slot (46) on one side, and the extension handle (42) is matched with the guide slot (46) at the end.

9. The osteotomy guide for use in distal femoral osteotomies of claim 7, wherein, The closing guide (4) further comprises a second fixing column (44), The fixed part (41) and the guide part (45) are both provided with a guide hole (47), The distal end positioning member (2) is provided with a distal end positioning hole (23) in the middle, and the proximal end positioning member (3) is provided with a proximal end positioning hole (33) in the middle, The second fixing column (44) is fixed on the femur in sequence through the guide hole (47) and the distal end positioning hole (23) or the proximal end positioning hole (33).

10. The osteotomy guide for use in distal femoral osteotomies of claim 7, wherein, The closing guide (4) further comprises a fixing member (43), which is arranged on the back of the fixed part (41), and the fixing member (43) is used for clamping with the distal end groove (21).

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