CN215130927U - Total knee prosthesis for reserving ankle joint tibial tumor - Google Patents
Total knee prosthesis for reserving ankle joint tibial tumor Download PDFInfo
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- CN215130927U CN215130927U CN202120588834.4U CN202120588834U CN215130927U CN 215130927 U CN215130927 U CN 215130927U CN 202120588834 U CN202120588834 U CN 202120588834U CN 215130927 U CN215130927 U CN 215130927U
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- 210000000544 articulatio talocruralis Anatomy 0.000 title claims abstract description 23
- 210000003127 knee Anatomy 0.000 title claims abstract description 23
- 206010028980 Neoplasm Diseases 0.000 title claims description 19
- 210000002303 tibia Anatomy 0.000 claims abstract description 95
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 210000000988 bone and bone Anatomy 0.000 claims description 15
- 230000001154 acute effect Effects 0.000 claims description 3
- 206010043827 tibia fracture Diseases 0.000 claims description 2
- 206010005949 Bone cancer Diseases 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 210000004872 soft tissue Anatomy 0.000 description 5
- 238000002513 implantation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 210000003423 ankle Anatomy 0.000 description 1
- 210000000549 articulatio subtalaris Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model provides a remain total knee prosthesis of ankle joint shin bone tumour, include: the prosthesis comprises a prosthesis main body and an L-shaped steel plate connected with the prosthesis main body through screws; the lower end of the prosthesis main body is abutted against the far-end joint surface of the tibia, and the upper end of the prosthesis main body is arranged towards the near-end direction of the tibia; the short side of the L-shaped steel plate is connected with the far end of the tibia through screws, and the long side of the L-shaped steel plate is close to the near end of the tibia and is fixed on one side of the prosthesis main body, which faces the near end of the tibia, through screws. The advantages are that: the ankle joint surface is kept, and the recovery period is shortened; and the technical problem that the osteotomy length is not accurate is solved, and the operation difficulty is reduced.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, specifically speaking is a remain total knee prosthesis of ankle joint shin bone tumour.
Background
The tibia, which is an important weight-bearing bone of the human body, is a main component of the lower limb. The tibialis and subtalar joints serve as important components of the ankle-hindfoot complex and serve the functions of maintaining weight-bearing walking of the lower extremities and maintaining normal ankle mobility.
In the prior art, the tibia far-end joint surface cannot be reserved, so that the recovery period is long after the prosthesis is implanted; different patients have different cases, so that the matched osteotomy guide plate is not available, the osteotomy length cannot be accurately determined, and the problems of overlong or overlong prosthesis after implantation exist in the operation.
SUMMERY OF THE UTILITY MODEL
The utility model provides a remain total knee prosthesis of ankle joint shin bone tumour, the purpose is overcome above-mentioned technical defect at least, shortens the recovery cycle, reduces the operation degree of difficulty, solves the fixed insecure problem in shin bone distal end initial stage.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
a total knee prosthesis for preserving tibial tumors of an ankle joint, comprising: the prosthesis comprises a prosthesis main body and an L-shaped steel plate connected with the prosthesis main body through a screw;
the lower end of the prosthesis main body is abutted against the far-end joint surface of the tibia, and the upper end of the prosthesis main body is arranged towards the near-end direction of the tibia; the short side of the L-shaped steel plate is connected with the far end of the tibia through a screw, and the long side of the L-shaped steel plate is close to the near end of the tibia and is fixed on one side of the prosthesis main body, which faces the near end of the tibia, through a screw.
Preferably, the prosthesis main body comprises a cylindrical connecting section and a tibia far-end connecting section which is integrally formed with the bottom end face of the cylindrical connecting section, and one end, which is far away from the cylindrical connecting section, of the tibia far-end connecting section is connected with the tibia far end.
Furthermore, two symmetrical convex parts extend out of one end of the cylindrical connecting section, which is close to the proximal end of the tibia, from the outer edge of the cylindrical connecting section along the same axis, and the cross section of each convex part is arc-shaped; a conical hole is formed in one end, close to the proximal end of the tibia, of the cylindrical connecting section, and the conical hole and the cylindrical connecting section are coaxial;
two first lug plates and a second lug plate are arranged at one end, connected with the cylindrical connecting section, of the cylindrical connecting section, and the first lug plates and the second lug plates extend to the direction of the cylindrical connecting section along the outer edge of the cylindrical connecting section;
the first lug plate, the second lug plate all with contained angle between the cylindrical connecting section central line is the acute angle.
Furthermore, the tibia far-end connecting section is of a cylindrical structure, and one end of the tibia far-end connecting section, which is far away from the cylindrical connecting section, is provided with four cones connected with the tibia far-end articular surface along the outer edge of the cylindrical connecting section.
Furthermore, one side of the first ear plate and one side of the second ear plate, which face to the center line of the cylindrical connecting section, are both in a trabecular bone structure;
the tibia far-end connecting section and one end, connected with the tibia far-end connecting section, of the cone are all of a bone trabecula structure.
Preferably, two nail holes arranged at intervals are formed in the second ear plate along the far end direction of the tibia.
Preferably, the tibia fracture plate further comprises a connecting body matched with the upper end of the cylindrical connecting section, and a broach is integrally connected to one end, deviating from the cylindrical connecting section, of the connecting body and used for being connected with the proximal end of the tibia.
Preferably, the long edge of the L-shaped steel plate is provided with at least two adjusting holes in the direction close to the proximal end of the tibia, and one side far away from the proximal end of the tibia is provided with at least one first fixing hole;
and at least two second fixing holes are formed in the short edge of the L-shaped steel plate.
Preferably, a plurality of suture holes are formed on the cylindrical connecting section.
The utility model discloses a remain total knee prosthesis of ankle joint shin bone tumour, its advantage is:
1. in the utility model, the structural design of the total knee prosthesis ensures that the ankle joint surface is kept in the using process, and the recovery period is shortened; the technical problem that the osteotomy length is not accurate is solved, and the operation difficulty is reduced;
2. in the utility model, the design of the first ear plate, the second ear plate, the cone and the like improves the stability of the far end of the tibia at the initial stage and prevents dislocation;
3. the utility model discloses in, sew up the position design in hole for sew up dissociative soft tissue, and the processing and the later stage of giving the soft tissue sew up wound work and bring the facility.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic perspective view of a total knee prosthesis for retaining tibial tumors of an ankle joint according to the present invention;
FIG. 2 is a schematic perspective view of a portion of the prosthesis body of the present invention;
fig. 3 is a schematic perspective view of the L-shaped steel plate of the present invention;
FIG. 4 is a view of the lower portion of a total knee prosthesis for preserving tibial tumors of the ankle joint of the present invention after attachment to the distal end of the tibia;
FIG. 5 is a view showing the state of the knee prosthesis for retaining the tibial tumor of the ankle joint in the total tibial osteotomy of the tibial tumor of the present invention;
FIG. 6 and FIG. 7 are diagrams showing different usage conditions of the knee prosthesis for retaining tibial tumor of ankle joint according to the present invention, wherein the connection body is connected to the knee prosthesis;
wherein:
the prosthesis comprises a prosthesis body 1, a cylindrical connecting section 11, a tibia far-end connecting section 12, a convex part 13, a conical hole 14, a first ear plate 15, a second ear plate 16, a nail hole 16a, a cone 17 and a suture hole 18;
a screw 2;
the L-shaped steel plate 3, an adjusting hole 31, a first fixing hole 32 and a second fixing hole 33;
a distal tibial end 4;
the proximal tibia end 5, the platform support 6, the osteotomy connecting section 7, the trabecular bone structure 8, the connecting body 9 and the broach 91.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
In order to solve the technical problem that the recovery cycle is long after unable shin bone distal end articular surface, the prosthetic implants among the prior art, it is shown according to fig. 1 to fig. 4, the utility model provides a remain total knee prosthesis of ankle joint shin bone tumour, include: the prosthesis comprises a prosthesis main body 1 and an L-shaped steel plate 3 connected with the prosthesis main body 1 through a screw; wherein, the lower end of the prosthesis main body 1 is abutted against the joint surface of the tibia far end 4, and the upper end is arranged towards the tibia near end 5; the short side of the L-shaped steel plate 3 is connected with the far end 4 of the tibia through a screw, and the long side of the L-shaped steel plate is close to the near end 5 of the tibia and is fixed on one side of the prosthesis main body 1, which faces the near end 5 of the tibia, through a screw;
prosthesis main part 1 include cylindrical linkage segment 11 and with the shin bone distal end linkage segment 12 of cylindrical linkage segment 11's bottom terminal surface integrated into one piece, shin bone distal end linkage segment 12 deviates from the one end and the shin bone distal end 4 of cylindrical linkage segment 11 are connected.
More specifically, at least two adjusting holes 31 are formed in the long side of the L-shaped steel plate 3 in the direction close to the proximal tibia end 5, so that screws can move on the adjusting holes 31, and after the screws are adjusted to a proper position as required, the upper portion of the cylindrical connecting section 11 is fixedly connected with the long side of the L-shaped steel plate 3; the number of the adjusting holes 31 and the number of the mounting screws in the using process are determined according to the surgical requirements;
at least one first fixing hole 32 is formed in one side, far away from the proximal tibia end 5, of the long edge of the L-shaped steel plate 3, and is used for connecting and fixing one end, close to the distal tibia end 4, of the cylindrical connecting section 11 with the distal tibia end 4 reserved in the operation process, and therefore the stability of prosthesis implantation is further enhanced;
at least two second fixing holes 33 are formed in the short side of the L-shaped steel plate 3 and used for connecting and fixing the short side of the L-shaped steel plate 3 with the tibia far end 4 reserved in the operation process, and therefore the stability of prosthesis implantation is further enhanced.
In a specific embodiment: two symmetrical convex parts 13 extend from the outer edge of one end of the cylindrical connecting section 11 close to the proximal tibia end 5, the convex parts 13 and the cylindrical connecting section 11 are coaxial, and the cross section of each convex part 13 is arc-shaped; the convex part 13 is used for connecting with the platform support 6 in operation or the tibia near end 5 reserved in the operation of the patient or connecting with the osteotomy connecting section 7 in operation (the platform support 6 and the osteotomy connecting section 7 are common structures in the field, and the specific structures are shown in a use state diagram);
a conical hole 14 is formed in one end, close to the proximal tibia end 5, of the cylindrical connecting section 11, the conical hole 14 and the cylindrical connecting section 11 are coaxial, and the conical hole 14 is used for being connected with the platform support 6, the osteotomy connecting section 7 or other structures;
two first ear plates 15 and one second ear plate 16 are arranged at one end of the cylindrical connecting section 11, which is connected with the cylindrical connecting section 11, and the first ear plates 15 and the second ear plates 16 extend to the direction of the cylindrical connecting section 11 along the outer edge of the cylindrical connecting section 11; the included angle between the first lug plate 15 and the second lug plate 16 and the central line of the cylindrical connecting section 11 is an acute angle; one surface (namely the inner side) of each of the first ear plate 15 and the second ear plate 16 facing the center line of the cylindrical connecting section 11 is a trabecular bone structure 8 (namely a layer blackened at the relevant structure in each figure is a trabecular bone structure, the tibia far-end connecting section 12 is formed by the trabecular bone structure), the thickness of the trabecular bone structure 8 at the position of the first ear plate 15 is preferably 0.8mm, and the thickness of the trabecular bone structure 8 at the position of the second ear plate 16 is preferably 1mm, so that later-stage bones can grow better, and dislocation caused by unstable matching and poor initial-stage stability is prevented; one surfaces (namely the outer sides) of the first lug plate 15 and the second lug plate 16 departing from the central line of the cylindrical connecting section 11 are of smooth solid structures; two nail holes 16a which are arranged at intervals are formed in the second ear plate 16 along the far end direction of the tibia;
in the use process, the outer side of the second ear plate 16 is completely attached to the reserved far end 4 of the tibia and is fixed on the reserved far end 4 of the tibia through a driving nail perpendicular to the second ear plate 16, so that the long-term stability of the prosthesis in a human body is improved;
the cylindrical connecting section 11 and the tibia far-end connecting section 12 are both smooth cylindrical solid structures basically inosculating with the tibia of a patient, have the function of replacing part of the tibia, and are subjected to surface polishing treatment, so that soft tissues cannot be injured; the design of the cylinder is basically coincident with the original tibia force line of the patient; the diameter of the artificial tibia is basically consistent with the original tibia after measurement simulation.
In a specific embodiment: the tibia far-end connecting section 12 is of a cylindrical structure, and one end of the tibia far-end connecting section, which is far away from the cylindrical connecting section 11, is provided with four cones 17 connected with the joint surface of the tibia far end 4 along the outer edge; the tibia far-end connecting section 12 and one end of the cone 17 connected with the tibia far-end connecting section 12 are both bone trabecular structures 8; the thickness of the tibia far-end connecting section 12 is preferably 3 mm; the cone 17 is designed to enable the prosthesis to be rapidly and stably inserted into the reserved joint surface of the tibia far end 4, so that the prosthesis can be better fixed, and a stable support is provided for later activities of a patient; the design of the trabecular bone structure 8 on the cone 17 can effectively promote bone ingrowth;
when meeting the situation of the total tibia osteotomy of the tibia tumor, the structure of the utility model can be connected with the existing osteotomy connecting section 7 and the platform support 6 in sequence (as shown in figure 5).
In a specific embodiment: the tibia far-end connector comprises a cylindrical connecting section 11, and is characterized by further comprising a connecting body 9 matched with the upper end of the cylindrical connecting section 11, wherein a broach 91 is integrally connected to one end, deviating from the cylindrical connecting section 11, of the connecting body 9 and is used for being connected with the tibia near end 5;
when the tibia tumor part is cut, the prosthesis connected with the connecting body 9 is selected to be implanted into the patient according to the operation requirement, so that the broach 91 is inserted into the proximal tibia 5 (shown in figure 6) reserved by the patient; if the length is not sufficient, an existing osteotomy connection 7 (fig. 7) can be connected between the connector body 9 and the upper portion of the cylindrical connection 11.
In a specific embodiment: the cylindrical connecting section 11 is provided with a plurality of suture holes 18, and the design positions of the suture holes 18 on the structure are kept away from the position where the L-shaped steel plate 3 is attached, so that free soft tissues can be sutured, and convenience is brought to the treatment of the soft tissues and the later wound suturing work.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A total knee prosthesis for preserving tibial tumors of an ankle joint, comprising: comprises a prosthesis main body (1) and an L-shaped steel plate (3) which is connected with the prosthesis main body (1) through a screw;
wherein the lower end of the prosthesis main body (1) is abutted against the joint surface of the far end of the tibia, and the upper end of the prosthesis main body is arranged towards the direction of the near end of the tibia; the short side of the L-shaped steel plate (3) is connected with the far end of the tibia through a screw, and the long side of the L-shaped steel plate is close to the near end of the tibia and is fixed on one side of the prosthesis main body (1) facing the near end of the tibia through the screw.
2. The total knee prosthesis for preserving tibial tumors of the ankle joint of claim 1, wherein: prosthesis main part (1) including cylindrical linkage segment (11) and with the shin bone distal end linkage segment (12) of the bottom end face integrated into one piece of cylindrical linkage segment (11), shin bone distal end linkage segment (12) deviates from the one end and the shin bone distal end of cylindrical linkage segment (11) are connected.
3. The total knee prosthesis for preserving tibial tumors of the ankle joint of claim 2, wherein: one end of the cylindrical connecting section (11) close to the proximal end of the tibia extends out of two symmetrical convex parts (13) along the outer edge of the cylindrical connecting section, the convex parts (13) and the cylindrical connecting section (11) are coaxial, and the cross section of each convex part (13) is arc-shaped; a conical hole (14) is formed in one end, close to the proximal end of the tibia, of the cylindrical connecting section (11), and the conical hole (14) and the cylindrical connecting section (11) are coaxial;
one end of the cylindrical connecting section (11) connected with the cylindrical connecting section (11) is provided with two first ear plates (15) and one second ear plate (16), and the first ear plates (15) and the second ear plates (16) extend to the direction of the cylindrical connecting section (11) along the outer edge of the cylindrical connecting section (11);
the first ear plate (15) and the second ear plate (16) are all acute angles with an included angle between the central lines of the cylindrical connecting sections (11).
4. The total knee prosthesis for preserving tibial tumors of the ankle joint of claim 3, wherein: the tibia far-end connecting section (12) is of a cylindrical structure, and one end of the tibia far-end connecting section (11) which is far away from the cylindrical connecting section is provided with four cones (17) connected with tibia far-end joint surfaces along the outer edge of the cylindrical connecting section.
5. The total knee prosthesis for preserving tibial tumors of the ankle joint of claim 4, wherein: one surfaces of the first ear plate (15) and the second ear plate (16) facing to the central line of the cylindrical connecting section (11) are all bone trabecula structures;
the tibia far-end connecting section (12) and one end, connected with the tibia far-end connecting section (12), of the cone (17) are all of a bone trabecular structure.
6. The total knee prosthesis for preserving tibial tumors of the ankle joint of claim 3, wherein: two nail holes (16a) arranged at intervals are arranged on the second ear plate (16) along the far end direction of the tibia.
7. The total knee prosthesis for preserving tibial tumors of the ankle joint of claim 3, wherein: the tibia fracture plate is characterized by further comprising a connecting body (9) matched with the upper end of the cylindrical connecting section (11), wherein a broach (91) is integrally connected to one end, deviating from the cylindrical connecting section (11), of the connecting body (9) and is used for being connected with the proximal end of the tibia.
8. The total knee prosthesis for preserving tibial tumors of the ankle joint of claim 1, wherein: at least two adjusting holes (31) are formed in the long edge of the L-shaped steel plate (3) in the direction close to the proximal end of the tibia, and at least one first fixing hole (32) is formed in one side far away from the proximal end of the tibia;
and at least two second fixing holes (33) are formed in the short edge of the L-shaped steel plate (3).
9. The total knee prosthesis for preserving tibial tumors of the ankle joint of any of claims 2 to 8, wherein: the cylindrical connecting section (11) is provided with a plurality of suture holes (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120588834.4U CN215130927U (en) | 2021-03-23 | 2021-03-23 | Total knee prosthesis for reserving ankle joint tibial tumor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120588834.4U CN215130927U (en) | 2021-03-23 | 2021-03-23 | Total knee prosthesis for reserving ankle joint tibial tumor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215130927U true CN215130927U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120588834.4U Active CN215130927U (en) | 2021-03-23 | 2021-03-23 | Total knee prosthesis for reserving ankle joint tibial tumor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215130927U (en) |
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2021
- 2021-03-23 CN CN202120588834.4U patent/CN215130927U/en active Active
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