CN112472371A

CN112472371A - Keep shin bone false body of bone dirt line

Info

Publication number: CN112472371A
Application number: CN202011413486.3A
Authority: CN
Inventors: 邹明霞; 曹鹏飞
Original assignee: Beijing Lidakang Technology Co Ltd
Current assignee: Beijing Lidakang Technology Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-03-12

Abstract

The utility model relates to a remain tibial prosthesis of bone dirty line relates to medical instrument's technical field, and it includes near-end prosthesis, distal end prosthesis and sets up near-end prosthesis with extension prosthesis between the distal end prosthesis, the extension prosthesis one side of keeping away from of distal end prosthesis is connected with the otic placode, the screw hole has been seted up on the otic placode. The present application has the effect of reducing the effect of distal tibial osteosarcoma surgery on the growth of the tibia of a pediatric patient.

Description

Keep shin bone false body of bone dirt line

Technical Field

The application relates to the field of medical equipment, in particular to a tibia prosthesis capable of keeping bone dirty lines.

Background

The tibia is the second best site for osteosarcoma of the femur alone, accounting for approximately 19% of total osteosarcoma, and of which 20% occurs in the distal tibia. The distal tibia has a high number of tendons, blood vessels and nerves, so that it is difficult to obtain a good tumor boundary. Therefore, the scholars recommend the amputation of the knee as the first surgical mode for the distal tibial osteosarcoma. With the progress of chemotherapy and surgical techniques in recent years, limb protection treatment of distal tibial osteosarcoma can also achieve good survival rate, and is accepted and recommended by bone tumor doctors.

The above treatment operation requires cutting off the distal end of the tibia and implanting a prosthesis in the missing part of the tibia, so that limbs are reserved, but the bone dirty lines are also cut off while the distal end of the whole femur is cut off, the growth of the tibia of a child patient is influenced, and the height of a child patient is limited or the length of the legs of the child patient is different.

Disclosure of Invention

To reduce the effect of distal tibial osteosarcoma surgery on the growth of the tibia in pediatric patients, the present application provides a tibial prosthesis that retains the bone wax lines.

The application provides a remain shin bone prosthesis of bone dirty line adopts following technical scheme:

the utility model provides a remain tibial prosthesis of bone dirty line, includes near-end prosthesis, distal end prosthesis and connects near-end prosthesis with extension prosthesis between the distal end prosthesis, the extension prosthesis one side of keeping away from of distal end prosthesis is connected with the otic placode, the screw hole has been seted up on the otic placode.

Through adopting above-mentioned technical scheme, near-end prosthesis is connected with the shin bone near-end, and the otic placode of distal end prosthesis passes through the screw and is connected with the shin bone distal end, remains the bone dirty line to make children patient's shin bone can continue to grow, reduce the influence to infant's shank length.

Optionally, the ear plate is provided with two and fits with the front side and the inner side of the tibia far end respectively.

By adopting the technical scheme, the two ear plates are respectively matched and attached with the front side and the inner side of the far end of the tibia, so that the fibula can be avoided; when a human body walks, the far end of the tibia inclines towards the front side, the stress on the front side joint of the far-end prosthesis and the far end of the tibia is more, and the ear plate on the front side can support the front side joint and enhance the connection strength.

Optionally, a porous trabecular bone structure is arranged at one end of the distal prosthesis far away from the extension prosthesis.

By adopting the technical scheme, the far end of the tibia can grow into a porous bone trabecular structure and is fused with a far-end prosthesis.

Optionally, the proximal prosthesis includes a broach and a proximal seat, the proximal seat is provided with a proximal slot, the extension prosthesis is connected with a proximal insertion column adapted to be inserted into the proximal slot, the distal prosthesis is connected with a distal insertion column, and the extension prosthesis is provided with a distal slot adapted to be inserted into the distal insertion column.

By adopting the technical scheme, the broach is used for being inserted into a medullary cavity at the proximal end of the tibia, the proximal slot is connected with the proximal insertion column in an insertion mode, the connection strength between the proximal prosthesis and the first base can be enhanced, and the distal insertion column is connected with the distal slot in an insertion mode, so that the connection strength between the distal prosthesis and the second base can be enhanced.

Optionally, the edges of the two ends of the extension prosthesis are provided with anti-rotation bumps, and the edges of the near-end seat body and the far-end prosthesis are provided with anti-rotation grooves which are in adaptive joint with the anti-rotation bumps.

Through adopting above-mentioned technical scheme, prevent changeing the lug and preventing changeing the recess joint, can prevent between first base and the near-end false body, relative rotation between second base and the distal end false body.

Optionally, the extension false body is including connecting the first base of near-end false body and connecting the second base of distal end false body, first base with the second base is the cylinder, and its surface that is close to each other is the installation face, two homogeneous connection has the cross section to be semicircular joint post on the installation face, joint post and rather than being connected with first base or second base diameter the same and axis coincidence, two the joint post splices into a complete cylinder, joint post and another installation face unsmooth cooperation on one of them installation face.

Through adopting above-mentioned technical scheme, the extension false body comprises first base and second base two parts, can splice with near-end false body and distal end false body respectively when the operation, and the convenience is in implanting, and two joint posts can prevent first base and second base relative rotation, and the installation face can make first base and second base be difficult to radial dislocation with the unsmooth cooperation of joint post.

Optionally, two mounting surfaces are provided with two clamping blocks close to the outer edge of the mounting surface, the number of the clamping blocks on each mounting surface is two, circle center connecting lines of the two clamping blocks and the mounting surface are not in the same straight line, and the two clamping columns are provided with clamping grooves matched and clamped with the clamping blocks.

Through adopting above-mentioned technical scheme, two fixture blocks all cooperate with the draw-in groove, can prevent that first base and second base from misplacing in front and back direction and left and right sides direction.

Optionally, the side surfaces, close to each other, of the two clamping columns are provided with pin grooves parallel to the mounting surface, the two pin grooves are through grooves and are spliced into a through hole, and a pin column is inserted into the through hole in an adaptive manner.

Through adopting above-mentioned technical scheme, the round pin post can prevent dislocation from top to bottom with two cotter way joint of first base and second base.

Optionally, the broach is sleeved with a porous trabecular bone sleeve body, and the trabecular bone sleeve body is clamped with the near-end seat body.

By adopting the technical scheme, the trabecular bone sleeve body can grow together with the proximal tibia, so that the connection between the proximal prosthesis and the proximal tibia is enhanced.

Optionally, one side of the proximal seat body, which is close to the broach, is provided with a tapered end, and the bone trabecula sleeve body is sleeved and clamped with the tapered end of the proximal seat body.

By adopting the technical scheme, the near-end seat body is processed into the tapered end to be clamped with the bone trabecula sleeve body, so that the processing and manufacturing are convenient.

Optionally, the bone trabecula sleeve body is in threaded fit with the proximal seat body.

By adopting the technical scheme, the bone trabecula sleeve body and the near-end seat body can be stably connected, and the installation is convenient.

Optionally, the bone trabecula sleeve body and the near-end seat body are in clamping fit through convex teeth and tooth grooves.

By adopting the technical scheme, the bone trabecula sleeve body and the near-end seat body can be prevented from rotating relatively, and the processing and the manufacturing are convenient.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the proximal prosthesis is connected with the proximal tibia, the ear plate of the distal prosthesis is connected with the distal tibia through a screw, and a bone dirt line is reserved, so that the tibia of a child patient can continue to grow, and the influence on the length of the calf of an infant patient is reduced;

2. the two ear plates can avoid the fibula and adapt to the position of the operation wound, and the ear plate on the front side can support the joint of the front side to strengthen the connection strength;

3. the first base and the second base of the extension prosthesis can be respectively spliced with the near-end prosthesis and the far-end prosthesis, so that the extension prosthesis is convenient to implant;

4. the fixture block of extension false body can prevent that first base and second base from misplacing in front and back direction and left and right sides direction, and the round pin post can prevent that first base and second base from misplacing from top to bottom with two cotter way joint.

Drawings

FIG. 1 is a schematic view of a tibial prosthesis retaining bone lining according to a first embodiment;

FIG. 2 is an exploded view of a tibial prosthesis retaining bone wax lines according to one embodiment;

FIG. 3 is a schematic view of an elongated prosthesis of a tibial prosthesis retaining a bone wax line according to an embodiment;

FIG. 4 is a schematic view of the proximal prosthesis and the trabecular sleeve of the tibial prosthesis retaining the bone cement line according to the second embodiment;

FIG. 5 is a schematic structural view of the proximal prosthesis and the trabecular sleeve of the tibial prosthesis retaining the bone cerumen line according to the third embodiment;

FIG. 6 is a schematic view of an extended prosthesis structure of a tibial prosthesis retaining a bone cement line according to the fourth embodiment;

FIG. 7 is an exploded view of an extended prosthesis of a tibial prosthesis retaining the scaling wires of the fourth embodiment;

fig. 8 is a schematic view of an extended prosthesis structure of a tibial prosthesis retaining a bone wax line according to the fifth embodiment.

Description of reference numerals: 1. a proximal prosthesis; 2. a distal prosthesis; 3. lengthening the prosthesis; 4. a proximal tibia end; 5. a distal tibia end; 11. a broach; 12. a proximal seat body; 121. a tapered end; 122. a proximal slot; 123. a convex tooth; 13. a trabecular bone sleeve; 131. a tooth socket; 21. an ear plate; 211. screw holes; 22. a trabecular bone structure; 23. a distal end plug-in post; 31. a first base; 311. a proximal end plug-in post; 32. a second base; 321. a distal slot; 33. a mounting surface; 331. a clamping block; 34. a clamping column; 341. a card slot; 342. a pin slot; 35. a pin; 36. an anti-rotation projection; 6. an anti-rotation groove.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses a tibial prosthesis for retaining bone dirty lines.

Example one

Referring to fig. 1, the tibial prosthesis for retaining the bone scaling line comprises a proximal prosthesis 1, a distal prosthesis 2, and an extension prosthesis 3 arranged between the proximal prosthesis 1 and the distal prosthesis 2, wherein the length of the tibial prosthesis for retaining the bone scaling line can be adjusted by selecting the extension prostheses 3 with different lengths. During operation, the diseased part of the tibia of the infant patient is cut off, the proximal tibia end 4 and the distal tibia end 5 are reserved, the proximal prosthesis 1 is connected with the proximal tibia end 4, and the distal tibia end 5 is connected with the distal prosthesis 2.

Referring to fig. 2, the proximal prosthesis 1 includes a broach 11 and a proximal seat 12, the broach 11 is a cylinder for inserting into the medullary cavity of the proximal tibia 4, one end of the broach 11 away from the proximal seat 12 is integrally formed with a dome to avoid damaging the inner wall of the medullary cavity, and the proximal seat 12 is a cylinder which has a larger diameter than the broach 11 and is coaxially and integrally connected with the broach 11 and is used for connecting with the extension prosthesis 3. The bone trabecula sleeve body 13 can be sleeved on the intramedullary nail 11, holes are covered on the bone trabecula sleeve body 13, and after the intramedullary nail 11 is inserted into a medullary cavity of a tibia, the bone trabecula sleeve body 13 is attached to the inner wall of the medullary cavity and can grow together with the proximal end 4 of the tibia. One end of the proximal seat body 12 close to the broach 11 can be processed into a tapered end 121, and the trabecular bone sleeve body 13 is nested and pressed on the tapered end 121 of the proximal seat body 12.

Referring to fig. 1 and 2, one end of the distal prosthesis 2 close to the elongated prosthesis 3 is a cylinder and has the same diameter as the proximal seat 12, an ear plate 21 is disposed on one side of the distal prosthesis 2 away from the elongated prosthesis 3, the ear plate 21 is fixedly connected to a side surface of the distal prosthesis 2, and the ear plate 21 is provided with a screw hole 211 for passing a screw therethrough to be fixedly connected with the distal tibia end 5. The number of the ear plates 21 can be two, and the two ear plates 21 are respectively connected to the front side and the inner side of the tibia far end 5 and are respectively attached to the front side and the inner side of the tibia far end 5 in shape. The fibula on the outer side of the tibia can be avoided by the two ear plates 21, in addition, the tibia inclines towards the front side when a human body walks, the stress on the front side joint of the far-end prosthesis 2 and the tibia far end 5 is more, and the ear plates 21 on the front side can support the front side joint and enhance the connection strength.

Referring to fig. 2, a porous trabecular bone structure 22 is further disposed at an end of the distal prosthesis 2 away from the extension prosthesis 3, the porous trabecular bone structure 22 is directly attached to the distal tibia end 5 during implantation, and the distal tibia end 5 can grow into the porous trabecular bone structure 22 and be fused with the distal prosthesis 2.

Referring to fig. 2 and 3, the extension prosthesis 3 is a cylinder and has the same diameter as the proximal seat 12 and the distal prosthesis 2, one end of the extension prosthesis 3 close to the proximal seat 12 is fixedly connected with a proximal insertion column 311, the circumference of the proximal insertion column 311 is tapered, and the diameter of the end far away from the proximal seat 12 is smaller than the diameter of the end of the connecting end seat 12. The proximal insertion column 311 is coaxial with the extension prosthesis 3, and has a diameter smaller than that of the extension prosthesis 3, and the proximal seat body 12 is provided with a proximal insertion slot 122 adapted to the proximal insertion column 311 for enhancing the connection with the proximal prosthesis 1.

Referring to fig. 2 and 3, a distal insertion column 23 is fixedly connected to one end of the distal prosthesis 2 close to the elongated prosthesis 3, the distal insertion column 23 is coaxial with the distal prosthesis 2 and has a diameter smaller than that of the distal prosthesis 2, the circumferential surface of the distal insertion column 23 is conical, and the diameter of the end far away from the distal prosthesis 2 is smaller than that of the end connected to the distal prosthesis 2. The extension prosthesis 3 is provided with a distal slot 321 which is in adaptive insertion with the distal insertion column 23, so as to enhance the connection strength between the extension prosthesis 3 and the distal prosthesis 2.

Referring to fig. 2 and 3, anti-rotation protrusions 36 are integrally connected to both ends of the extension prosthesis 3, and the anti-rotation protrusions 36 are adjacent to the edge of the extension prosthesis 3. The number of the anti-rotation lugs 36 at each end of the extension prosthesis 3 is two, the two anti-rotation lugs 36 are symmetrically arranged at two opposite sides of the extension prosthesis 3 and can be obtained by cutting through grooves on two end faces of the extension prosthesis 3, the outer side faces of the anti-rotation lugs 36 are cambered surfaces and flush with the circumferential surface of the extension prosthesis 3, and the inner side faces of the anti-rotation lugs are planes. The near-end seat body 12 and the far-end prosthesis 2 are both provided with anti-rotation grooves 6 which are adaptive and clamped with the anti-rotation lugs 36, so that the relative rotation between the extension prosthesis 3 and the near-end prosthesis 1 and the far-end prosthesis 2 can be prevented.

The edges and corners of the proximal prosthesis 1, the distal prosthesis 2 and the extension prosthesis 3 are all treated as arc-shaped transitions, relieving the compression on the surrounding tissue.

The diseased part of the tibia of the sick child is cut off in the operation, the proximal tibia 4 and the distal tibia 5 are reserved, then the proximal prosthesis 1 is connected with the proximal tibia 4 through the broach 11 and the trabecular sleeve body 13, the ear plate 21 of the distal prosthesis 2 is connected with the distal tibia 5 through the screw, and then the extension prosthesis 3 is installed. After the tibia far end 5 is reserved, the bone dirty line is reserved, so that the tibia far end 5 can continue to grow, and the influence on the length of the crus of the child patient is reduced.

Example two

Referring to fig. 4, the difference between the first embodiment and the second embodiment is that an external thread is formed at one end of the proximal seat 12 close to the broach 11, an internal thread is formed at one end of the trabecular bone sleeve 13 close to the proximal seat 12, and the trabecular bone sleeve 13 is in threaded fit with the proximal seat 12, so that the connection can be stable and the installation is convenient.

EXAMPLE III

Referring to fig. 5, the difference between the first embodiment and the second embodiment is that the proximal housing 12 is concave-convex fitted with the trabecular sleeve body 13. The edge of the proximal seat body 12 close to one end of the broach 11 is integrally connected with a plurality of convex teeth 123, and the bone trabecular sleeve body 13 is provided with tooth sockets 131 which have the same number as the convex teeth 123 and are matched and clamped, so that relative rotation can be prevented, and the processing and manufacturing are convenient.

Example four

Referring to fig. 6, the present embodiment is different from the first embodiment in that the extension prosthesis 3 includes a first base 31 and a second base 32, the first base 31 is inserted into the proximal housing 12 of the proximal prosthesis 1 through the proximal insertion column 311, and the second base 32 is inserted into the distal prosthesis 2 through the distal insertion column 23.

Referring to fig. 6, the first base 31 and the second base 32 are cylinders and have the same diameter as the proximal seat 12 and the distal prosthesis 2, the surfaces close to each other are mounting surfaces 33, the two mounting surfaces 33 are integrally connected with clamping columns 34, and the cross sections of the two clamping columns 34 are semicircular. The clamping columns 34 and the first base 31 or the second base 32 integrally connected with the clamping columns have the same diameter and the same axis, and the first base 31, the second base 32 and the two clamping columns 34 can be spliced into a finished cylinder. The clamping columns 34 on one mounting surface 33 are in concave-convex fit with the other mounting surface 33.

Referring to fig. 6 and 7, the two mounting surfaces 33 are provided with the latch 331, and the latch 331 is adjacent to the outer edge of the mounting surface 33. The number of the fixture blocks 331 on each mounting surface 33 can be two, and the connecting line of the centers of the two fixture blocks 331 and the mounting surface 33 is not on the same straight line. The end surfaces of the two clamping columns 34 are provided with clamping grooves 341 which are matched and clamped with the two clamping blocks 331. After the first base 31 and the second base 32 are spliced, the two clamping blocks 331 on the mounting surface 33 are matched with the clamping grooves 341, so that radial dislocation of the first base 31 and the second base 32 can be prevented.

During operation, the proximal prosthesis 1 and the distal prosthesis 2 are implanted, the first base 31 and the proximal prosthesis 1 are inserted, the second base 32 and the second base 32 are inserted, and the first base 31 and the second base 32 are spliced, so that sufficient installation space can be reserved for the proximal insertion column 311 and the distal insertion column 23.

EXAMPLE five

Referring to fig. 8, the difference between the present embodiment and the fourth embodiment is that the side surfaces of the two clamping columns 34 close to each other are both provided with pin grooves 342 parallel to the mounting surface 33, each of the two pin grooves 342 is a through groove, and the height of the pin groove 342 along the length direction of the clamping column 34 is not less than the height of the fixture block 331 on the mounting surface 33. After the two clamping columns 34 are spliced, the two pin grooves 342 are aligned and spliced to form a through hole, a pin column 35 is inserted into the through hole in an adaptive mode, and the pin column 35 can prevent the first base 31 and the second base 32 from being vertically staggered.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A tibial prosthesis for retaining a bone wax line, comprising: including near-end prosthesis (1), distal end prosthesis (2) and connection near-end prosthesis (1) with extension prosthesis (3) between distal end prosthesis (2), keep away from extension prosthesis (3) one side of distal end prosthesis (2) and be connected with otic placode (21), screw hole (211) have been seted up on otic placode (21).

2. The tibial prosthesis for retaining a bone tartar line, as recited in claim 1, wherein: the ear plate (21) is provided with two and is respectively attached to the front side and the inner side of the tibia far end (5).

3. The tibial prosthesis for retaining a bone tartar line, as defined in claim 1 or 2, wherein: and a porous bone trabecular structure (22) is arranged at one end of the far-end prosthesis (2) far away from the extension prosthesis (3).

4. The tibial prosthesis for retaining a bone tartar line, as recited in claim 1, wherein: the near-end prosthesis (1) comprises a broach (11) and a near-end seat body (12), a near-end slot (122) is formed in the near-end seat body (12), a near-end inserting column (311) which is connected with the extension prosthesis (3) in a matched and inserting mode with the near-end slot (122) is connected onto the extension prosthesis (3), a far-end inserting column (23) is connected onto the far-end prosthesis (2), and a far-end slot (321) which is matched and inserted with the far-end inserting column (23) is formed in the extension prosthesis (3).

5. The tibial prosthesis for retaining a bone tartar line, as recited in claim 1, wherein: the edge at the both ends of extension false body (3) all is provided with prevents changeing lug (36), the edge of near-end pedestal (12) and the edge of distal end false body (2) all offer with prevent changeing the recess (6) of preventing that lug (36) adaptation joint changes.

6. The tibial prosthesis for retaining a bone tartar line, as recited in claim 1, wherein: extension false body (3) are including connecting first base (31) of near-end false body (1) and connection second base (32) of distal end false body (2), first base (31) with second base (32) are the cylinder, and its surface that is close to each other is installation face (33), two homogeneous body connection has cross section for semicircular joint post (34) on installation face (33), joint post (34) and rather than be connected with first base (31) or second base (32) diameter the same and axis coincidence, two joint post (34) splice into a complete cylinder, joint post (34) on one of them installation face (33) and another installation face (33) unsmooth cooperation.

7. The tibial prosthesis for retaining a bone tartar line, as recited in claim 6, wherein: the two mounting surfaces (33) are respectively provided with two clamping blocks (331) close to the outer edge of the mounting surface (33), the number of the clamping blocks (331) on each mounting surface (33) is two, a circle center connecting line of the two clamping blocks (331) and the mounting surface (33) is not in the same straight line, and the two clamping columns (34) are respectively provided with clamping grooves (341) which are in adaptive clamping connection with the clamping blocks (331).

8. The tibial prosthesis for retaining a bone tartar line, as recited in claim 6, wherein: the side faces, close to each other, of the two clamping columns (34) are provided with pin grooves (342) parallel to the mounting face (33), the pin grooves (342) are through grooves and are spliced into a through hole, and a pin column (35) is inserted into the through hole in an adaptive mode.

9. The tibial prosthesis for retaining a bone tartar line, as recited in claim 4, wherein: the bone trabecula sleeve body (13) with a plurality of holes is sleeved on the broach (11), and the bone trabecula sleeve body (13) is clamped with the near-end seat body (12).

10. The tibial prosthesis for retaining a bone tartar line, as recited in claim 9, wherein: one side of the near end seat body (12) close to the broach (11) is provided with a conical end (121), and the trabecular bone sleeve body (13) is sleeved and clamped at the conical end (121) of the near end seat body (12); the bone trabecula sleeve body (13) is in threaded fit with the near-end seat body (12); the bone trabecula sleeve body (13) is in clamping fit with the near-end seat body (12) through convex teeth (123) and tooth grooves (131).