Adjustable gap osteotomy guider for fixing single condyle

Abstract

The invention provides an osteotomy guider capable of fixing a single condyle and adjusting a gap, and belongs to the technical field of medical apparatuses and instruments. An osteotomy guider upper body; the fixing block is fixedly connected to the lower end of the osteotomy guider upper body; the osteotomy guider lower body is arranged at the lower end of the osteotomy guider upper body; the sliding groove is formed in one side end of the fixing block; the function of adjusting the joint gap and the function of adjusting the thighbone osteotomy amount are added on the basis of an original thighbone osteotomy guider, meanwhile, thighbone single-side fixation is changed into thighbone and tibia double-side fixation, the function of filling the joint gap is achieved without being matched with other instruments for use after modification, the instrument accuracy can be improved, the osteotomy accuracy is guaranteed, and the application range of the thighbone osteotomy guider is widened. Meanwhile, the thighbone and the tibia are fixed on the two sides, so that the stability of the osteotomy position and angle is ensured, and the condition that the osteotomy position and angle deviate is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, and in particular relates to an osteotomy guide for fixing a single condyle with an adjustable gap. Background Art

[0002] Osteotomy guide is an auxiliary tool used in orthopedic surgery, mainly used to accurately locate and guide bone cutting. This tool is essential to improve the accuracy and safety of surgery. According to different surgical needs, osteotomy guides can be divided into different types, such as linear, curved, angle-adjustable, etc. Doctors can choose the appropriate guide for surgery according to the patient's specific situation.

[0003] Similar existing technology products are assemblies. During processing and manufacturing, the raw materials are processed and formed by turning and wire cutting, and the parts are assembled after forming. In the existing unicompartmental knee replacement surgery, when shaping the femur, a femoral osteotomy guide is required to remove excess bone for shaping to meet the installation of the unicompartmental knee prosthesis, so as to facilitate the surgeon to perform unicompartmental knee replacement on the patient. The unicompartmental surgery osteotomy guide currently used on the market only fixes the femoral side and needs to be used in conjunction with a gap pad to fill the gap between the patient's femur and tibia. Because only the femoral osteotomy guide is fixed and the gap pad is not fixed, there is a large error in the use of the combination, and there is a risk of inaccurate osteotomy amount and osteotomy position deviation in the femoral osteotomy, resulting in the need for secondary osteotomy of the femur, which increases the risk of wound infection or secondary injury to the patient.

[0004] The femoral osteotomy guide currently used in the market cannot flexibly adjust the amount of osteotomy of the surgical tool according to the amount of bone defect in the patient during surgery. For patients with larger bone defects clinically, it is impossible to retain more of their own high-quality bones. The joint mobility of patients after surgery is reduced, affecting their postoperative recovery. At the same time, some patients with larger bone defects cannot undergo partial knee replacement and have to undergo total knee replacement, which is more traumatic to the patients. Summary of the invention

[0005] The purpose of the present invention is to provide an osteotomy guide for fixing a unicompartmental adjustable gap, aiming to solve the problem that the unicompartmental surgical osteotomy guide used in the prior art only fixes the femoral side and needs to be used in conjunction with a gap pad to fill the gap between the patient's femur and tibia. Since only the femoral osteotomy guide is fixed and the gap pad is not fixed, there is a large error in the coordinated use, and there is a risk of inaccurate osteotomy amount and osteotomy position deviation in femoral osteotomy, resulting in the need for secondary osteotomy of the femur, increasing the risk of wound infection or secondary injury to the patient. At the same time, the function of increasing the amount of osteotomy to be able to adjust the amount of osteotomy according to the actual situation of the patient is increased, thereby improving the flexible operability of the surgical tool and the choice of clinical patients.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An osteotomy guide for fixing a single condylar adjustable gap, comprising:

[0008] Osteotomy guide upper body;

[0009] A fixing block, the fixing block being fixedly connected to the lower end of the upper body of the osteotomy guide;

[0010] The lower body of the osteotomy guide is arranged at the lower end of the upper body of the osteotomy guide;

[0011] A slide groove, the slide groove is opened at one side end of the fixed block;

[0012] A locking nut, wherein the locking nut is slidably connected in the slide groove;

[0013] A threaded hole, the threaded hole is opened at one side end of the lower body of the osteotomy guide, and the locking nut is threadedly connected in the threaded hole;

[0014] The first latching tooth and the second latching tooth are respectively fixedly connected to the lower body of the osteotomy guide and the proximal end of the fixing block.

[0015] As a preferred solution of the present invention, a plurality of scale grooves are formed on one side end of the fixing block, and the spacing between each scale groove is 1 mm.

[0016] As a preferred solution of the present invention, the lower body of the osteotomy guide is L-shaped, and the fixing block is T-shaped.

[0017] As a preferred solution of the present invention, the lower body of the osteotomy guide is flush with the upper body of the osteotomy guide.

[0018] As a preferred solution of the present invention, the first latching tooth and the second latching tooth are designed oppositely.

[0019] As a preferred solution of the present invention, one side end of the upper body of the osteotomy guide is fixedly connected to a support plate, a slot is provided at the upper end of the support plate, an adjustment gasket is provided at the upper end of the support plate, a block is fixedly connected to the lower end of the adjustment gasket, and the block is located in the slot.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The osteotomy guide can achieve precise guidance and fixation of the osteotomy position through the design of the fixing block and the lower body of the osteotomy guide, which helps to improve the accuracy and safety of the operation and reduce the risk of surgery. The lower body of the osteotomy guide and the fixing block are connected through the locking nut and the threaded hole, so the osteotomy gap can be easily adjusted. This design allows doctors to perform personalized osteotomy according to the patient's specific situation to better meet surgical needs.

[0022] 2. The spacing of the scale grooves is 1mm, which allows the doctor to intuitively understand the size of the osteotomy gap and make precise adjustments, improving the controllability and accuracy of the operation and helping to improve the surgical effect. The L-shaped design of the lower body of the osteotomy guide and the T-shaped design of the fixing block, as well as the opposite design of the first and second teeth, make the entire osteotomy guide have a stable structure, which helps to ensure the stability of the osteotomy guide during surgery and reduce surgical risks.

[0023] 3. Change the original unilateral fixation of the femur to bilateral fixation of the femur and tibia to enhance the stability of the instrument during use and improve the accuracy of the instrument.

[0024] 4. Add the function of adjusting the amount of femoral osteotomy. Add a slot at the tail of the osteotome that cooperates with a 1mm or 2mm gasket to facilitate doctors to adjust the amount of osteotomy according to the patient's bone defect during surgery, retain the patient's high-quality bone, and avoid the problem of long recovery time and poor recovery effect caused by too much osteotomy on the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is the main stereoscopic view in the present invention;

[0027] Figure 2 It is the first explosion diagram in the present invention;

[0028] Figure 3 is a second explosion diagram in the present invention;

[0029] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A;

[0030] Figure 5 It is a side perspective view of the present invention.

[0031] In the figure: 1. upper body of osteotomy guide; 2. lower body of osteotomy guide; 3. locking nut; 4. slide groove; 5. first clamping tooth; 6. threaded hole; 7. second clamping tooth; 8. scale groove; 9. fixing block; 10. support plate; 11. adjustment gasket; 12. clamping block; 13. clamping groove. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0033] Example 1

[0034] See also Figure 1-Figure 5 , the present invention provides the following technical solutions:

[0035] An osteotomy guide for fixing a single condylar adjustable gap, comprising:

[0036] Osteotomy guide upper body 1;

[0037] A fixing block 9, the fixing block 9 is fixedly connected to the lower end of the upper body 1 of the osteotomy guide;

[0038] The osteotomy guide lower body 2 is arranged at the lower end of the osteotomy guide upper body 1;

[0039] A slide groove 4, which is opened at one side end of the fixed block 9;

[0040] A locking nut 3, wherein the locking nut 3 is slidably connected in the slide groove 4;

[0041] A threaded hole 6 is provided at one side end of the lower body 2 of the osteotomy guide, and a locking nut 3 is threadedly connected in the threaded hole 6;

[0042] A first latching tooth 5 and a second latching tooth 7, wherein the first latching tooth 5 and the second latching tooth 7 are respectively fixedly connected to the proximal ends of the lower body 2 of the osteotomy guide and the fixing block 9;

[0043] A support plate 10 is fixedly connected to one side end of the upper body 1 of the osteotomy guide. A slot 13 is provided at the upper end of the support plate 10. An adjustment gasket 11 is provided at the upper end of the support plate 10. A block 12 is fixedly connected to the lower end of the adjustment gasket 11. The block 12 is located in the slot 13.

[0044] In a specific embodiment of the present invention, the upper body 1 of the osteotomy guide is used to be placed on the bone surface to provide guidance for the osteotomy operation, the lower body 2 of the osteotomy guide is used to contact the bone surface, the slide groove 4 can be used for the movement and adjustment of the locking nut 3, the locking nut 3 is used in the slide groove 4 to adjust the distance between the lower body 2 of the osteotomy guide and the fixing block 9, the threaded hole 6 is used to fix the locking nut 3, the first latch 5 and the second latch 7 are designed to engage with each other to prevent relative sliding between the lower body 2 of the osteotomy guide and the fixing block 9, the device can expand the gap of the adjustment device by adjusting the upper and lower heights of the locking nut 3, so as to solve the problem that the existing unicompartmental femoral osteotomy guide has a large error when used in conjunction with other instruments, and there is a risk of inaccurate osteotomy amount and osteotomy position deviation in femoral osteotomy, resulting in the need for secondary osteotomy of the femur. The problem is solved, and the risk of wound infection or secondary injury to patients is reduced. By using the femoral osteotomy guide for unicompartmental surgery, the function of adjusting the joint gap is added to the original femoral osteotomy guide, and the unilateral fixation of the femur is modified to the bilateral fixation of the femur and tibia. After the modification, there is no need to cooperate with other instruments to realize the function of filling the joint gap, which can improve the accuracy of the instrument and ensure the accuracy of the osteotomy. At the same time, bilateral fixation of the femur and tibia is adopted to ensure the stability of the osteotomy position and angle, and avoid the occurrence of deviation of the osteotomy position and angle. The block 12 at the bottom of the adjusting gasket 11 is inserted into the slot 13, so that the height of the support plate 10 can be increased, and the height of the adjusting gasket 11 can be controlled at 1mm-2mm. The adjusting gasket 11 of 1mm or 2mm can be added to realize the adjustment of the femoral osteotomy amount, which can meet the use needs of patients with excessive bone defects.

[0045] For details, please refer to Figure 1-Figure 4 A plurality of scale grooves 8 are provided on one side of the fixed block 9, and the spacing between each scale groove 8 is 1 mm.

[0046] In this embodiment, the design of the graduated groove 8 enables the doctor to accurately see the descending distance of the lower body 2 of the osteotomy guide during the operation, thereby ensuring the doctor's observation during the operation.

[0047] For details, please refer to Figure 1-Figure 5 The lower body 2 of the osteotomy guide is L-shaped, and the fixing block 9 is T-shaped.

[0048] In this embodiment, the lower body 2 of the osteotomy guide is L-shaped, and the fixing block 9 is T-shaped, which ensures better stability of the device during surgery and is convenient for personnel to pick up, thereby improving stability.

[0049] For details, please refer to Figure 1-Figure 5 , the lower body 2 of the osteotomy guide is flush with the upper body 1 of the osteotomy guide.

[0050] In this embodiment, the lower body 2 of the osteotomy guide is flush with the upper body 1 of the osteotomy guide, which helps to ensure the stability and accuracy of the osteotomy guide during surgery.

[0051] For details, please refer to Figure 1-Figure 5 The first latching tooth 5 and the second latching tooth 7 are designed in opposite manner.

[0052] In this embodiment, the first latching tooth 5 and the second latching tooth 7 are designed in opposite ways, so that the locking is more secure during the engagement, and the opposite design is used to ensure the accuracy of the operation.

[0053] The working principle and use process of the present invention are as follows: the upper body 1 of the osteotomy guide is placed at the position where osteotomy is required to ensure that the upper body 1 of the osteotomy guide is stably fixed, the lower body 2 of the osteotomy guide is placed at the lower end of the upper body 1 of the osteotomy guide so that it is opposite to the upper body 1 of the osteotomy guide, the locking nut 3 is slidably connected to the slide groove 4, and the locking nut 3 is threadedly connected to the threaded hole 6, and the position of the locking nut 3 is adjusted so that it engages with the first latch tooth 5 and the second latch tooth 7, thereby fixing the lower body 2 of the osteotomy guide and the fixing block 9, and adjusting the distance between the lower body 2 of the osteotomy guide and the fixing block 9 according to the position and angle of the osteotomy required, that is, adjusting the position of the lower body 2 of the osteotomy guide so that it reaches the required osteotomy gap, and after confirming that the position and angle of the lower body 2 of the osteotomy guide are correct, the first latch tooth 5 and the second latch tooth 7 are locked by the locking nut 3, thereby fixing the osteotomy guide The position of the lower body 2 of the device is adjusted and fixed, and the osteotomy operation can be performed after the adjustment and fixation of the osteotomy guide is completed to ensure the accuracy of the osteotomy. At the same time, bilateral fixation of the femur and tibia is used to ensure the stability of the osteotomy position and angle, and the deviation of the osteotomy position and angle is avoided. The function of adjusting the joint gap is added to the original femoral osteotomy guide, and the unilateral fixation of the femur is modified to the bilateral fixation of the femur and tibia. After the modification, there is no need to cooperate with other instruments to realize the function of filling the joint gap, which can improve the accuracy of the instrument and ensure the accuracy of the osteotomy. At the same time, bilateral fixation of the femur and tibia is used to ensure the stability of the osteotomy position and angle, and the deviation of the osteotomy position and angle is avoided. A slot is added at the tail of the guide, and a 1mm or 2mm gasket can be added to adjust the femoral osteotomy amount, which can meet the use needs of patients with excessive bone defects.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An osteotomy guide for fixing a single condylar adjustable gap, characterized in that: include: Osteotomy guide upper body (1); A fixing block (9), the fixing block (9) being fixedly connected to the lower end of the upper body (1) of the osteotomy guide; An osteotomy guide lower body (2), wherein the osteotomy guide lower body (2) is arranged at the lower end of the osteotomy guide upper body (1); A slide groove (4), wherein the slide groove (4) is provided at one side end of the fixed block (9); A locking nut (3), wherein the locking nut (3) is slidably connected in the slide groove (4); A threaded hole (6), the threaded hole (6) being formed at one side end of the lower body (2) of the osteotomy guide, the locking nut (3) being threadedly connected in the threaded hole (6); A first latching tooth (5) and a second latching tooth (7), wherein the first latching tooth (5) and the second latching tooth (7) are respectively fixedly connected to the proximal ends of the lower body (2) of the osteotomy guide and the fixing block (9).

2. The osteotomy guide for fixing a single condylar adjustable gap according to claim 1, characterized in that: A plurality of scale grooves (8) are provided on one side end of the fixed block (9), and the spacing between each scale groove (8) is 1 mm.

3. The osteotomy guide for fixing a single condylar adjustable gap according to claim 2, characterized in that: The lower body (2) of the osteotomy guide is designed in an L shape, and the fixing block (9) is designed in a T shape.

4. The osteotomy guide for fixing a single condylar adjustable gap according to claim 3, characterized in that: The lower body (2) of the osteotomy guide is flush with the upper body (1) of the osteotomy guide.

5. The osteotomy guide for fixing a single condylar adjustable gap according to claim 4, characterized in that: The first latching tooth (5) and the second latching tooth (7) are designed in opposite manner.

6. The osteotomy guide for fixing a single condylar adjustable gap according to claim 5, characterized in that: A support plate (10) is fixedly connected to one side end of the upper body (1) of the osteotomy guide, a slot (13) is provided at the upper end of the support plate (10), an adjustment gasket (11) is provided at the upper end of the support plate (10), a block (12) is fixedly connected to the lower end of the adjustment gasket (11), and the block (12) is located in the slot (13).

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