Two-in-one knee joint additive manufacturing osteotomy guide plate
By designing a two-in-one additive manufacturing osteotomy guide for the femur and tibia, the problem of existing guides not being applicable to both simultaneously has been solved, enabling osteotomy to be performed without changing the guide, thus improving the practicality and safety of the surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- B ONE MEDICAL (SUZHOU) CO LTD
- Filing Date
- 2024-12-26
- Publication Date
- 2026-04-17
AI Technical Summary
Existing knee osteotomy guides cannot be used for both the femur and tibia simultaneously, requiring the guides to be changed repeatedly during surgery, which increases the difficulty of the operation and the surgical risk for doctors.
A two-in-one knee joint additive manufacturing osteotomy guide plate was designed, which has an attachment surface adapted to the femur and tibia and an osteotomy groove set on the substrate. It can be fixed to the femur and tibia at the same time, so as to remove bone at the same time without replacing the guide plate.
This expands the applicability of surgical guides, simplifies surgical procedures, reduces surgical risks, and improves the practicality and efficiency of surgery.
Smart Images
Figure CN224126017U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a two-in-one knee joint additive manufacturing osteotomy guide plate, belonging to the field of medical devices. Background Technology
[0002] With the accelerating aging of society and the influence of factors such as people's lifestyles, the incidence of knee joint diseases is showing a gradual upward trend, with conditions such as knee osteoarthritis becoming increasingly common. As the largest and most complex joint in the human body, the knee joint plays a crucial role in daily activities such as walking on flat ground, going up and down stairs, and squatting. Once problems arise, they will seriously affect people's quality of life.
[0003] Currently, various osteotomy guides are available on the market, including femoral osteotomy guides and tibial osteotomy guides. However, a single type of osteotomy guide cannot meet actual needs, and switching between guides during surgery increases the surgical procedure, not only adding to the surgeon's workload but also increasing surgical risks.
[0004] In view of this, it is indeed necessary to improve the existing guide plate to solve the above problems. Utility Model Content
[0005] To address the aforementioned technical problems, this utility model provides a two-in-one knee joint additive manufacturing osteotomy guide plate. This guide plate can simultaneously cut the human femur and tibia, making it more widely applicable and practical.
[0006] The technical solution of this utility model is:
[0007] A two-in-one knee joint additive manufacturing osteotomy guide plate includes a base and a first fixing portion and a second fixing portion extending outward from opposite sides of the base. Each of the first fixing portion and the second fixing portion includes an attachment portion extending in a direction perpendicular to the base, and a first attachment surface and a second attachment surface are formed on the corresponding attachment portions. The first attachment surface is adapted to the shape of the human femur, and the second attachment surface is adapted to the shape of the human tibia, so as to fix the guide plate to the human femur and the human tibia simultaneously. The base is provided with an osteotomy groove, which can be selectively aligned with the human femur and / or the human tibia.
[0008] As a further improvement of this utility model, in the cross-sectional direction of the substrate, the line connecting the first fixing part and the second fixing part is defined as the first direction, the second direction is perpendicular to the first direction, the osteotomy groove extends along the second direction, and includes a first osteotomy groove disposed near the first fixing part and a second osteotomy groove disposed near the second fixing part.
[0009] As a further improvement of this utility model, on the first plane constructed by the first direction and the second direction, the first osteotomy groove is inclined relative to the second direction, and the base is defined to have a first reference line extending along the second direction, and the included angle between the first osteotomy groove and the first reference line is between 0-5°.
[0010] As a further improvement of this utility model, the thickness direction of the substrate is defined as the third direction, and a second plane is constructed with the second direction and the third direction. On the second plane, the second osteotomy groove is inclined relative to the second direction.
[0011] As a further improvement of this utility model, on the second plane, the substrate is defined to have a second reference line extending along the second direction, and the included angle between the second osteotomy groove and the second reference line is between 0 and 5°.
[0012] As a further improvement of this utility model, in the direction perpendicular to the substrate, the first attachment surface and the second attachment surface are both disposed on the upper surface of the corresponding attachment part. The first attachment surface and the second attachment surface are higher than the upper surface of the substrate, so as to form a cutting area between the two attachment parts and the substrate. The cutting area is interconnected with the osteotomy groove.
[0013] As a further improvement of this utility model, both the first fixing part and the second fixing part are provided with through fixing holes, and there are at least three fixing holes.
[0014] As a further improvement of this utility model, the guide plate has an attachment side for attaching to the human femur and the human tibia and an observation side for observation. The three fixing holes are arranged in a triangular pattern on the observation side and are approximately straight on the attachment side.
[0015] As a further improvement of this utility model, at least one fixing hole is inclined.
[0016] As a further improvement of this utility model, the substrate is also provided with a through observation hole, which is used to observe the osteotomy.
[0017] The beneficial technical effects of this utility model are as follows: This utility model provides outwardly extending first and second fixing parts on opposite sides of the base. Both the first and second fixing parts include attachment parts extending perpendicular to the base, and a first attachment surface and a second attachment surface are formed on the corresponding attachment parts. The first attachment surface is adapted to the shape of the human femur, and the second attachment surface is adapted to the shape of the human tibia, so as to fix the guide plate to the human femur and the human tibia at the same time. By providing osteotomy grooves on the base, the osteotomy grooves can be selectively aligned with the human femur and / or the human tibia, so as to simultaneously cut the human femur and the human tibia without replacing the guide plate. This makes it more applicable and more practical. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the two-in-one knee joint additive manufacturing osteotomy guide plate conforming to the preferred embodiment of this utility model.
[0019] Figure 2 yes Figure 1 A schematic diagram of the guide plate from another angle. Detailed Implementation
[0020] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0021] Please see Figure 1 and Figure 2As shown, this utility model discloses a two-in-one knee joint additive manufacturing osteotomy guide plate 100. The guide plate 100 includes a base 1 and a first fixing part 21 and a second fixing part 22 extending outward from opposite sides of the base 1. The first fixing part 21 and the second fixing part 22 each include an attachment part 211 extending in a direction perpendicular to the base 1, and a first attachment surface 2111 and a second attachment surface 2112 are formed on the corresponding attachment parts 211. The first attachment surface 2111 is adapted to the shape of the human femur, and the second attachment surface 2112 is adapted to the shape of the human tibia, so as to fix the guide plate 100 to the human femur and the human tibia at the same time. The base is provided with an osteotomy groove 3, which can be selectively aligned with the human femur and / or the human tibia. In other words, by setting the first attachment surface 2111 and the second attachment surface 2112, they can be simultaneously attached to the human femur and the human tibia, allowing the substrate 1 to cover both the human femur and the human tibia. This enables selective cutting of either the femur or the tibia via the osteotomy groove 3, eliminating the need to replace different guide plates 100. This broadens the applicability and enhances practicality. Preferably, the first attachment surface 2111 and the second attachment surface 2112 can be formed by 3D printing based on CT scan results, thus ensuring their compatibility with the shapes of the human femur and the human tibia.
[0022] In a direction perpendicular to the substrate 1, the first attachment surface 2111 and the second attachment surface 2112 are both disposed on the upper surface of the corresponding attachment portion 211. The first attachment surface 2111 and the second attachment surface 2112 are higher than the upper surface of the substrate 1, so as to form a cutting area 210 between the two attachment portions 211 and the substrate 1. The cutting area 210 is in communication with the osteotomy groove 3.
[0023] In this embodiment, the cutting area 210 is an empty area. The human femur and the human tibia are attached by the first attachment surface 2111 and the second attachment surface 2112, making the cutting area 210 hollow, that is, forming a gap between the bone to be cut and the base 1. At this time, the osteotomy tool enters the cutting area 210 through the osteotomy groove 3 and performs osteotomy.
[0024] Preferably, both the first fixing part 21 and the second fixing part 22 are provided with through fixing holes 4, and there are at least three fixing holes 4. By providing fixing holes 4, the first fixing part 21 and the second fixing part 22 are fixed to the femur and the tibia of the human body, that is, the guide plate 100 is fixed.
[0025] In this embodiment, the guide plate 100 has an attachment side 200 for attaching to the femur and tibia of the human body, and an observation side 300 for observation. At least one fixing hole 4 is inclined, such that the three fixing holes 4 are arranged in a triangular pattern on the observation side 300, and are nearly straight on the attachment side 200. This arrangement, through the inclined fixing holes 4, prevents the guide plate 100 from detaching from its fixation due to vibration during the cutting process, thus making the guide plate 100 more stably fixed.
[0026] The substrate 1 is also provided with a through observation hole 5, which is connected to the cutting area 210 for observing the osteotomy.
[0027] In the cross-sectional direction of the base 1, the line connecting the first fixing part 21 and the second fixing part 22 is defined as the first direction, and the second direction is perpendicular to the first direction. The osteotomy groove 3 extends along the second direction and includes a first osteotomy groove 31 disposed near the first fixing part 21 and a second osteotomy groove 32 disposed near the second fixing part 22. The observation hole 5 is located between the first osteotomy groove 31 and the second osteotomy groove 32. At this time, by adjusting the position of the guide plate 100 relative to the human femur and human tibia, the positions of the first osteotomy groove 31 and the second osteotomy groove 32 can be adjusted accordingly to adjust the amount of osteotomy of the human femur and human tibia.
[0028] On a first plane constructed by the first and second directions, the first osteotomy groove 31 is inclined relative to the second direction, defining the base 1 as having a first reference line extending along the second direction, and the angle between the first osteotomy groove 31 and the first reference line is between 0 and 5°. This inclined arrangement is adapted to the structure of the human femur and facilitates osteotomy operations.
[0029] The thickness direction of the substrate 1 is defined as the third direction. A second plane is constructed using the second direction and the third direction. On the second plane, the second osteotomy groove 32 is inclined relative to the second direction.
[0030] Preferably, on the second plane, the base 1 is defined with a second reference line extending along the second direction, and the angle between the second osteotomy groove 32 and the second reference line is between 0 and 5°. This configuration allows the second osteotomy groove 32 to adapt to the structure of the human tibia, thus facilitating osteotomy operations.
[0031] It should be noted that in this embodiment, although both the first osteotomy groove 31 and the second osteotomy groove 32 are inclined, their inclination directions are different, which is based on the structural differences between the human femur and the human tibia.
[0032] In summary, the two-in-one knee joint additive manufacturing osteotomy guide plate 100 of this utility model has outwardly extending first fixing part 21 and second fixing part 22 on opposite sides of the base 1. Both the first fixing part 21 and the second fixing part 22 include an attachment part 211 extending in a direction perpendicular to the base 1, and a first attachment surface 2111 and a second attachment surface 2112 are formed on the corresponding attachment part 211. The first attachment surface 2111 is adapted to the shape of the human femur, and the second attachment surface 2112 is adapted to the shape of the human tibia, so as to fix the guide plate 100 to the human femur and the human tibia at the same time. By providing osteotomy groove 3 on the base 1, the osteotomy groove 3 can be selectively aligned with the human femur and / or the human tibia, so as to simultaneously cut the human femur and the human tibia without replacing the guide plate 100. It has a wider range of applications and is more practical.
[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A two-in-one knee arthroplasty additive manufacturing osteotomy guide, characterized in that, The device includes a base and a first fixing portion and a second fixing portion extending outward from opposite sides of the base. Each of the first fixing portion and the second fixing portion includes an attachment portion extending in a direction perpendicular to the base, and a first attachment surface and a second attachment surface are formed on the corresponding attachment portions. The first attachment surface is adapted to the shape of the human femur, and the second attachment surface is adapted to the shape of the human tibia, so as to fix the guide plate to the human femur and the human tibia simultaneously. The base is provided with an osteotomy groove, which can be selectively aligned with the human femur and / or the human tibia.
2. The two-in-one knee arthroplasty osteotomy guide, according to claim 1, wherein, In the cross-sectional direction of the substrate, the line connecting the first fixation part and the second fixation part is defined as the first direction, the second direction is perpendicular to the first direction, the osteotomy groove extends along the second direction, and includes a first osteotomy groove disposed near the first fixation part and a second osteotomy groove disposed near the second fixation part.
3. The two-in-one knee arthroplasty osteotomy guide of claim 2, wherein, On a first plane constructed by the first direction and the second direction, the first osteotomy groove is inclined relative to the second direction, and the matrix is defined to have a first reference line extending along the second direction, with the included angle between the first osteotomy groove and the first reference line being between 0 and 5°.
4. The two-in-one knee arthroplasty osteotomy guide of claim 2, wherein, The thickness direction of the substrate is defined as the third direction. A second plane is constructed using the second direction and the third direction. On the second plane, the second osteotomy groove is inclined relative to the second direction.
5. The two-in-one knee arthroplasty osteotomy guide, according to claim 4, wherein, On the second plane, the substrate is defined to have a second reference line extending along the second direction, and the angle between the second osteotomy groove and the second reference line is between 0 and 5°.
6. The two-in-one knee arthroplasty osteotomy guide of claim 1, wherein, In a direction perpendicular to the substrate, the first attachment surface and the second attachment surface are both disposed on the upper surface of the corresponding attachment portion. The first attachment surface and the second attachment surface are higher than the upper surface of the substrate to form a cutting area between the two attachment portions and the substrate. The cutting area is interconnected with the osteotomy groove.
7. The two-in-one knee arthroplasty osteotomy guide of claim 1, wherein, Both the first fixing part and the second fixing part are provided with through fixing holes, and there are at least three fixing holes.
8. The two-in-one knee arthroplasty osteotomy guide of claim 7, wherein, The guide plate has an attachment side for attaching to the femur and tibia of the human body and an observation side for observation. Three fixing holes are arranged in a triangular pattern on the observation side and are approximately straight on the attachment side.
9. The two-in-one knee arthroplasty osteotomy guide of claim 7, wherein, At least one fixing hole is set at an angle.
10. The two-in-one knee arthroplasty osteotomy guide of claim 1, wherein, The substrate is also provided with a through observation hole, which is used to observe the osteotomy.