CN116019538A - Implant for high-level tibia osteotomy - Google Patents
Implant for high-level tibia osteotomy Download PDFInfo
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- CN116019538A CN116019538A CN202310317607.1A CN202310317607A CN116019538A CN 116019538 A CN116019538 A CN 116019538A CN 202310317607 A CN202310317607 A CN 202310317607A CN 116019538 A CN116019538 A CN 116019538A
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Abstract
The invention discloses an implant for high-level tibia osteotomy, which comprises: the connecting plate is used for being connected with the bone body; the cushion block is arranged on one side of the connecting plate and is used for supporting the cushion block and the bone in the bone notch, the high-level tibia osteotomy implant provided by the invention is used for fixing the cushion block and the bone through the connecting plate, supporting the joint in the bone notch through the cushion block in a clamping manner, the connecting plate and the cushion block are integrally fixed, the occlusion auxiliary connecting plate of the cushion block is utilized for fixing the bone notch, the movement of the cushion block is limited through the connecting plate, the support is ensured to be stable, the combination of the cushion block and the bone is greatly reduced, and compared with the traditional steel plate, fewer bone nails are used for fixing.
Description
Technical Field
The invention belongs to the technical field of high-level tibia osteotomy medical equipment, and particularly relates to an implant for high-level tibia osteotomy.
Background
Knee osteoarthritis is the most common arthropathy in middle-aged and elderly people in China, with patellofemoral joint and medial tibiofemoral joint lesions being the most common. With the aging of the population structure of China, the disease is more prominent. Has important significance in actively preventing and treating the disease. The varus and valgus deformity generated by the unicondylar knee osteoarthritis can cause abnormal distribution of the load stress of the joint, such as varus deformity of the knee joint, so as to cause stress concentration on the inner side of the knee joint and accelerate degeneration of the joint on the inner side. When the knee joint eversion deformity occurs, the stress on the outer side of the joint is concentrated, so that the degeneration of the outer side joint is accelerated.
Artificial joint replacement has been widely used for severe knee osteoarthritis at present, but due to the high cost, the risk of infection (infection is devastating) within 2 years after surgery is not suitable for young patients under 60 years old, and the like, and is refused by many patients. Therefore, the tibia high osteotomy (HTO) is mostly adopted to treat the knee internal and external eversion deformity of the knee osteoarthritis of middle-aged and old people, and has obvious effects of relieving pain and improving functions.
The tibia high osteotomy (HTO) corrects the lower limb force line through the osteotomy, so that the stress part of the knee joint is transferred from the medial compartment to the lateral compartment which are severely worn (as shown in fig. 1, the bone body is cut off, the bone body is reshaped and laid out, the stress joint part is changed, and then the stress joint part is fixed by a steel plate, or the steel plate and the bone nails are fixed after the gap is filled), the pressure of the medial joint is reduced, the wear of the joint cartilage is slowed down, and the opportunity of repairing and regenerating is provided. Thus completing the treatment of osteoarthritis, which is a means for making full use of the favorable conditions of the outside healthy articular cartilage to partially repair the degenerated joint.
However, the traditional steel plate used in the existing tibia high osteotomy is generally made of titanium alloy, the appearance is long and narrow, the incision for the operation is increased, the fixed bone nails are also increased, and the difficulty for recovering and later dismantling the steel plate after the operation of a patient is increased.
Disclosure of Invention
Aiming at the defects in the prior art, the invention solves the problems that the traditional steel plate used in the existing tibia high osteotomy is generally made of titanium alloy, the appearance is long and narrow, the incision for the operation is increased, the fixed bone nails are also increased, and the difficulty for recovering and later dismantling the steel plate after the operation of a patient is increased.
In order to achieve the above object, the present invention provides an implant for high tibial osteotomy, comprising:
the connecting plate is used for being connected with the bone body;
the cushion block is arranged on one side of the connecting plate and used for being supported in the bone notch.
Optionally, the connecting plate includes:
a plate body;
the first through holes are horizontally arranged on the plate body;
the second through holes are horizontally or obliquely arranged on the plate body, and one end of each second through hole penetrates through the cushion block.
Optionally, the cushion block is detachably connected with the connecting plate to form a T-shaped structure.
Optionally, the cushion block includes:
two vertical plates are arranged on one side of the base plate at intervals, and the other side of the base plate is connected with the connecting plate;
one end of the two shifting blocks is rotatably connected between the two vertical plates, and the other end of the two shifting blocks is exposed out of the two vertical plates;
the first driving mechanism is arranged between the two shifting blocks and can change the included angle of the two shifting blocks.
Optionally, the first driving mechanism includes:
the first driving block is in a water drop shape and is movably arranged between the two shifting blocks and the base plate, and first teeth meshed with each other are arranged at the mutually approaching ends of the two shifting blocks;
the first positioning hole is arranged on the side, close to the connecting plate, of the first driving block;
and one end of the first threaded rod passes through the connecting plate in a spiral way, and the other end of the first threaded rod passes through the base plate and is rotationally connected with the first positioning hole.
Optionally, the first driving mechanism includes:
the second driving block is in a strip shape, two shifting blocks are arranged at intervals, and one end of the second driving block passes through the gap between the two shifting blocks and is in friction transmission or engagement transmission with the two shifting blocks;
the threaded hole is formed in the side, close to the connecting plate, of the second driving block;
and two ends of the second threaded rod are respectively a polished rod part and a threaded part, the polished rod part penetrates through the base plate and the connecting plate, and the threaded part penetrates through and is in threaded connection with the threaded hole.
Optionally, the cushion block includes:
one end of the block is clamped with the connecting plate through a horizontal chute, and the other end of the block is provided with a circular cavity;
the upper end and the lower end of the cavity are provided with through grooves communicated with the outside, the spring ring is positioned in the cavity, and the two ends of the spring ring are exposed out of the through grooves;
and one end of the second driving mechanism is exposed out of the connecting plate, and the other end of the second driving mechanism can extrude the spring ring to deform.
Optionally, the second driving mechanism includes:
a third threaded rod, one end of which passes through the connecting plate in a spiral way, and the other end of which passes through the block body and is positioned in the cavity;
and two ends of the contact block are respectively connected with the third threaded rod and the spring ring.
Optionally, a support block is disposed in the cavity, and the support block is located inside the spring ring.
Optionally, the second driving mechanism includes:
one end of the fourth threaded rod penetrates through the spring ring to be in threaded connection with the supporting block, and the other end of the fourth threaded rod is provided with a straight groove;
and the through hole penetrates through the connecting plate and the block body and is concentric with the fourth threaded rod.
The implant for high-level tibia osteotomy of the invention fixes the cushion block and the bone through the connecting plate, supports the joint in the bone notch through the clamping of the cushion block, achieves the operation effect, is integrally fixed with the cushion block, not only utilizes the bone notch to fix the occluding auxiliary connecting plate of the cushion block, but also limits the movement of the cushion block through the connecting plate to ensure stable support, and the two are combined with the operation wound to be greatly reduced, and uses fewer bone nails compared with the traditional steel plate for fixing.
The cushion block of the implant for the high-level tibia osteotomy has an adjusting function, the effective supporting height of the cushion block can be adaptively changed according to the actual gap size, so that the optimal operation effect is ensured, equipment is prevented from being lost in the adapting process when the implant is adapted according to the bone gap, the situation that the wound is required to be corrected again due to the fact that the implant is not adapted to the bone gap is avoided, the adaptation of the implant is completed once after the bone gap is completed, and the operation workload is reduced.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular descriptions of exemplary embodiments of the invention as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the invention.
Fig. 1 shows a schematic view of the use of a high tibial osteotomy implant according to the prior art.
Fig. 2 shows a schematic view of the use of a high tibial osteotomy implant according to the invention.
Fig. 3 shows a schematic structural view of a high tibial osteotomy implant according to embodiment 1 of the present invention.
Fig. 4 shows a schematic structural view of a high tibial osteotomy implant according to embodiment 2 of the present invention.
Fig. 5 shows a schematic structural view of a high tibial osteotomy implant according to example 3 of the present invention.
Fig. 6 shows a schematic structural view of a high tibial osteotomy implant according to example 4 of the present invention.
Fig. 7 shows a schematic structural view of a high tibial osteotomy implant according to example 5 of the present invention.
Reference numerals illustrate:
1. a connecting plate; 2. a cushion block; 3. bone nails; 4. a substrate; 5. a shifting block; 6. a first driving block; 7. a first threaded rod; 8. a second driving block; 9. a second threaded rod; 10. a block; 11. a spring ring; 12. a third threaded rod; 13. a contact block; 14. a fourth threaded rod; 15. and (5) supporting blocks.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1
As shown in fig. 2-3, a high tibial osteotomy implant, comprising:
the connecting plate 1 is used for being connected with a bone body;
and the cushion block 2 is arranged on one side of the connecting plate 1 and is used for being supported in the bone notch.
Specifically, cushion 2 and connecting plate 1 set up together, support the breach after the bone operation through cushion 2, avoid the breach closure, fix on the skeleton surface through connecting plate 1 through bone nail 3, and then fix cushion 2 in the bone breach.
Furthermore, the connecting plate 1 and the cushion block 2 are made of tantalum metal, and the tantalum metal has extremely high melting point and extremely high chemical corrosion resistance, can stably exist in a body for a long time, does not release toxic substances, reduces rejection reaction, has extremely good osseointegration, and promotes better and faster osseointegration.
In the present embodiment, the connection plate 1 includes:
a plate body;
the first through holes are horizontally arranged on the plate body;
the second through holes are horizontally or obliquely arranged on the plate body, and one end of each second through hole penetrates through the cushion block connecting plate 1.
Specifically, the first through hole and the second through hole cooperate to improve the mounting stability of the implant.
Further, the end, far away from the cushion block 2, of the first through hole and the second through hole is provided with a countersunk hole.
In this embodiment, the cushion block 2 is detachably connected with the connecting plate 1 to form a T-shaped structure.
Specifically, the connection plate 1 and the cushion block 2 are detachably connected, so that cushion blocks 2 with different sizes can be conveniently replaced according to actual bone gaps, the connection plate 1 and the cushion blocks 2 are not required to be integrally arranged, the cushion blocks 2 can be timely replaced in operation, the connection plate 1 is universal, and the loss and the medical cost of an operation preparation device are reduced.
Example 2
Fig. 4 shows a schematic structural view of a high tibial osteotomy implant according to embodiment 2 of the present invention.
As shown in fig. 4, the high-level tibial osteotomy implant of the present embodiment differs from the high-level tibial osteotomy implant of embodiment 1 in that:
in the present embodiment, the pad 2 includes:
two vertical plates are arranged on one side of the base plate 4 at intervals, and the other side of the base plate is connected with the connecting plate 1;
one end of the two shifting blocks 5 is rotatably connected between the two vertical plates, and the other end of the two shifting blocks is exposed out of the two vertical plates;
the first driving mechanism is arranged between the two shifting blocks 5 and can change the included angle of the two shifting blocks 5.
Specifically, the base plate 4 is connected with the connecting plate 1 to fix the cushion block 2, and the two shifting blocks 5 are driven by the first driving mechanism to change the included angle so as to adapt to the use of bone gaps with different sizes, so that the suitability of the implant is improved.
Further, the shifting block 5 is in a hook shape and is oppositely arranged, and the second through hole is formed in the vertical plate.
In the present embodiment, the first driving mechanism includes:
the first driving block 6 is in a water drop shape and is movably arranged between the two shifting blocks 5 and the base plate 4, and first teeth meshed with each other are arranged at the mutually approaching ends of the two shifting blocks 5;
a first positioning hole arranged on the side of the first driving block 6 close to the connecting plate 1;
a first threaded rod 7, one end of which is threaded through the connecting plate 1 and the other end of which is threaded through the base plate 4 and is rotatably connected with the first positioning hole.
Specifically, one end of the first threaded rod 7 can be exposed out of the connecting plate 1, the first threaded rod 7 moves axially by rotating the exposed end, and then the first driving block 6 is driven to gradually expand the included angle of the two shifting blocks 5, so that the two shifting blocks 5 are opened and supported in the bone notch, and the opened angle is changed to adapt to the bone notch with different sizes.
Example 3
Fig. 5 shows a schematic structural view of a high tibial osteotomy implant according to example 3 of the present invention.
As shown in fig. 5, the high-level tibial osteotomy implant of the present embodiment differs from the high-level tibial osteotomy implant of example 2 in that:
in the present embodiment, the first driving mechanism includes:
the second driving block 8 is in a strip shape, the two shifting blocks 5 are arranged at intervals, and one end of the second driving block 8 passes through the gap between the two shifting blocks 5 and is in friction transmission or engagement transmission with the two shifting blocks 5;
the threaded hole is arranged on the side, close to the connecting plate 1, of the second driving block 8;
and two ends of the second threaded rod 9 are respectively a polished rod part and a threaded part, the polished rod part passes through the base plate 4 and the connecting plate 1, and the threaded part passes through and is in threaded connection with the threaded hole.
Specifically, the polished rod portion is connected with the rotation of connecting plate 1, and one end is provided with cross or a word groove, and keeps away from the one side parallel and level of cushion 2 with connecting plate 1, guarantees that polished rod portion tip exposes always in connecting plate 1, and convenient drive drives the contained angle change of two shifting blocks 5 through 8 horizontal migration of second drive piece.
Further, the outer periphery of the polish rod part is provided with a limiting part, and the second threaded rod 9 is prevented from moving axially.
Example 4
Fig. 6 shows a schematic structural view of a high tibial osteotomy implant according to example 4 of the present invention.
As shown in fig. 6, the high-level tibial osteotomy implant of the present embodiment differs from the high-level tibial osteotomy implant of embodiment 1 in that:
in the present embodiment, the pad 2 includes:
one end of the block body 10 is clamped with the connecting plate 1 through a horizontal chute, and the other end of the block body is provided with a circular cavity;
the spring ring 11, the upper and lower both ends of the cavity have through grooves which communicate with outside, the spring ring 11 locates in cavity, and both ends are exposed to the through grooves;
and one end of the second driving mechanism is exposed out of the connecting plate 1, and the other end of the second driving mechanism can extrude the spring ring 11 to deform.
Specifically, extrude spring ring 11 through second actuating mechanism and warp, become vertical oblate form from the circular, and then support in the bone breach, spring ring 11 has elasticity simultaneously, but slight adaptability deformation and continuously guarantee the tensioning force, avoid embedding cushion 2 and the inner wall direct hard contact of bone breach and then inlay the inner wall of bone breach.
In the present embodiment, the second driving mechanism includes:
a third threaded rod 12, one end of which is threaded through the connecting plate 1 and the other end of which is positioned in the cavity through the block 10;
and the two ends of the contact block 13 are respectively connected with the third threaded rod 12 and the spring ring 11.
Specifically, rotating the third threaded rod 12 from the connection plate 1 side presses the spring ring 11 to deform, and the contact block 13 ensures the contact area and prevents the third threaded rod 12 from rotating and wearing the spring ring 11 when directly contacting the spring ring 11.
Example 5
Fig. 7 shows a schematic structural view of a high tibial osteotomy implant according to example 5 of the present invention.
As shown in fig. 7, the high-level tibial osteotomy implant of this embodiment differs from the high-level tibial osteotomy implant of embodiment 4 in that:
in this embodiment, a spacer 15 is disposed within the cavity, the spacer 15 being located within the spring ring 11.
In particular, the spring ring 11 is prevented from being forced to be depressed inward by the stay 15.
In the present embodiment, the second driving mechanism includes:
a fourth threaded rod 14, one end of which passes through the spring ring 11 and is in threaded connection with the supporting block 15, and the other end of which is provided with a straight slot;
the through hole, which runs through the connection plate 1 and the block 10, is concentric with the fourth threaded rod 14.
Specifically, the screwdriver rotates the fourth threaded rod 14 through the through hole to press the spring ring 11 to deform, and the fourth threaded rod 14 penetrates through the spring ring 11 to avoid the spring ring 11 from moving.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.
Claims (8)
1. An implant for a high tibial osteotomy, comprising:
the connecting plate is used for being connected with the bone body;
the cushion block is arranged on one side of the connecting plate and is used for being supported in the bone notch;
the cushion block comprises:
two vertical plates are arranged on one side of the base plate at intervals, and the other side of the base plate is connected with the connecting plate;
one end of the two shifting blocks is rotatably connected between the two vertical plates, and the other end of the two shifting blocks is exposed out of the two vertical plates;
the first driving mechanism is arranged between the two shifting blocks and can change the included angle of the two shifting blocks;
or the cushion block comprises:
one end of the block is clamped with the connecting plate through a horizontal chute, and the other end of the block is provided with a circular cavity;
the upper end and the lower end of the cavity are provided with through grooves communicated with the outside, the spring ring is positioned in the cavity, and the two ends of the spring ring are exposed out of the through grooves;
and one end of the second driving mechanism is exposed out of the connecting plate, and the other end of the second driving mechanism can extrude the spring ring to deform.
2. The high tibial osteotomy implant of claim 1, wherein the web comprises:
a plate body;
the first through holes are horizontally arranged on the plate body;
the second through holes are horizontally or obliquely arranged on the plate body, and one end of each second through hole penetrates through the cushion block.
3. The implant of claim 1, wherein the spacer is removably attachable to the connecting plate in a T-shaped configuration.
4. The high tibial osteotomy implant of claim 1, wherein the first drive mechanism comprises:
the first driving block is in a water drop shape and is movably arranged between the two shifting blocks and the base plate, and first teeth meshed with each other are arranged at the mutually approaching ends of the two shifting blocks;
the first positioning hole is arranged on the side, close to the connecting plate, of the first driving block;
and one end of the first threaded rod passes through the connecting plate in a spiral way, and the other end of the first threaded rod passes through the base plate and is rotationally connected with the first positioning hole.
5. The high tibial osteotomy implant of claim 1, wherein the first drive mechanism comprises:
the second driving block is in a strip shape, two shifting blocks are arranged at intervals, and one end of the second driving block passes through the gap between the two shifting blocks and is in friction transmission or engagement transmission with the two shifting blocks;
the threaded hole is formed in the side, close to the connecting plate, of the second driving block;
and two ends of the second threaded rod are respectively a polished rod part and a threaded part, the polished rod part penetrates through the base plate and the connecting plate, and the threaded part penetrates through and is in threaded connection with the threaded hole.
6. The high tibial osteotomy implant of claim 1, wherein the second drive mechanism comprises:
a third threaded rod, one end of which passes through the connecting plate in a spiral way, and the other end of which passes through the block body and is positioned in the cavity;
and two ends of the contact block are respectively connected with the third threaded rod and the spring ring.
7. The implant of claim 1, wherein a spacer is disposed within the cavity, the spacer being positioned within the spring ring.
8. The high tibial osteotomy implant of claim 1, wherein the second drive mechanism comprises:
one end of the fourth threaded rod penetrates through the spring ring to be in threaded connection with the supporting block, and the other end of the fourth threaded rod is provided with a straight groove;
and the through hole penetrates through the connecting plate and the block body and is concentric with the fourth threaded rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310317607.1A CN116019538B (en) | 2023-03-29 | 2023-03-29 | Implant for high-level tibia osteotomy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310317607.1A CN116019538B (en) | 2023-03-29 | 2023-03-29 | Implant for high-level tibia osteotomy |
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| Publication Number | Publication Date |
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| CN116019538A true CN116019538A (en) | 2023-04-28 |
| CN116019538B CN116019538B (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310317607.1A Active CN116019538B (en) | 2023-03-29 | 2023-03-29 | Implant for high-level tibia osteotomy |
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| Publication number | Publication date |
|---|---|
| CN116019538B (en) | 2023-06-23 |
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