CN219661998U - Medical artificial ulnar joint prosthesis - Google Patents
Medical artificial ulnar joint prosthesis Download PDFInfo
- Publication number
- CN219661998U CN219661998U CN202320192172.8U CN202320192172U CN219661998U CN 219661998 U CN219661998 U CN 219661998U CN 202320192172 U CN202320192172 U CN 202320192172U CN 219661998 U CN219661998 U CN 219661998U
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- Prior art keywords
- base
- artificial
- radius
- inner ring
- cavity
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- 210000000623 ulna Anatomy 0.000 claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims abstract description 13
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 9
- 210000000988 bone and bone Anatomy 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000005524 ceramic coating Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 210000000245 forearm Anatomy 0.000 abstract description 5
- 210000002758 humerus Anatomy 0.000 description 8
- 210000002310 elbow joint Anatomy 0.000 description 6
- 206010010356 Congenital anomaly Diseases 0.000 description 4
- 206010017076 Fracture Diseases 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 208000027205 Congenital disease Diseases 0.000 description 1
- 206010058314 Dysplasia Diseases 0.000 description 1
- 208000016285 Movement disease Diseases 0.000 description 1
- 208000035977 Rare disease Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 206010049514 Traumatic fracture Diseases 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000008468 bone growth Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003387 muscular Effects 0.000 description 1
- 238000004393 prognosis Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
The utility model discloses a medical artificial upper ulna-radius joint prosthesis, which comprises an upper ulna-radius joint base, a base inner ring, an artificial radius prosthesis handle and an artificial radius small head; the upper ulnar joint base is provided with a connecting section on one side and a base body part on the other side, the connecting section is fixedly connected with ulna, the base body part is internally provided with a loading cavity, and the loading cavity is provided with cavity openings which penetrate through the top end and the bottom end of the base body part; the inner ring of the base is rotatably arranged in the loading cavity, the inner ring of the base is provided with a through hole penetrating through the top end and the bottom end of the inner ring of the base, and the through hole corresponds to the cavity opening of the loading cavity in a straight line; the lower end of the artificial radius prosthesis handle is used for being inserted along the radius marrow cavity and fixedly connected with the radius, and the upper end of the artificial radius prosthesis handle extends to the upper part of the seat body after passing through the through hole of the inner ring of the base, and an artificial radius small head is detachably arranged on the upper end of the artificial radius prosthesis handle. The utility model can reconstruct the upper ulnar joint and restore the ball-and-socket type rotation function of the forearm.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a medical artificial ulnar joint prosthesis.
Background
Congenital superior ulnar fusion is a rare disease characterized by the fact that the proximal ends of the radius and ulna are in bony connection, so that the forearm is fixed at the pronation position and cannot be supinated. Described first by Saniford. Because the disease is a congenital disease with unknown reasons, patients often combine congenital postrotation muscular dysplasia and even deficiency, so that the effect of a simple separation operation is not satisfactory, and the rebusness is easy to occur. The existing operation mode can not restore the normal upper ulnar radial joint structure, and the existing operation method is adopted for treatment, so that only partial functions can be restored or the problems of unstable joints and the like exist.
Traumatic fracture of the small head of the radius, especially the fracture of the small head of the radius, has unsatisfactory treatment and prognosis effects, and often leaves the forearm or elbow joint movement disorder. The existing operation mode can not restore the normal upper ulnar and radial joint structure, is forced to cut the small head of the radius, is easy to cause eversion deformity of elbow joint after operation, and can only restore partial functions or has the problems of unstable joint and the like.
Disclosure of Invention
The utility model aims to provide a medical artificial ulnar joint prosthesis, which effectively overcomes the defects of the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a medical artificial upper ulna-radius joint prosthesis comprises an upper ulna-radius joint base, a base inner ring, an artificial radius prosthesis handle and an artificial radius small head; the upper ulnar joint base is provided with a connecting section on one side and a base body part on the other side, the connecting section is used for being fixedly connected with ulna, the base body part is internally provided with a loading cavity, and the loading cavity is provided with an orifice penetrating through the top end and the bottom end of the base body part; the inner ring of the base is rotatably arranged in the loading cavity, the inner ring of the base is provided with a through hole penetrating through the top end and the bottom end of the inner ring of the base, and the through hole corresponds to the cavity opening of the loading cavity in a straight line; the lower end of the artificial radius prosthesis handle is used for being inserted along a radius marrow cavity and fixedly connected with a radius, the upper end of the artificial radius prosthesis handle extends to the upper part of the seat body after passing through the through hole of the inner ring of the base, and the artificial radius small head is detachably arranged on the upper end of the artificial radius prosthesis handle.
As a further technical scheme of the utility model: the connecting section is in a round rod shape extending towards the ulna and penetrating into the ulna, and threads for fixing the connecting section into the ulna are arranged on the outer circumferential surface of the connecting section.
As a further technical scheme of the utility model: the seat body comprises a first base and a second base, wherein the first base is integrally connected with the connecting section, the second base is detachably installed with the first base, and the loading cavity is formed between the first base and the second base.
As a further technical scheme of the utility model: the installation between first base and the second base is fixed through locking spring piece cooperation screw, supplies the lock spring piece to fix first base and second base lock after, fixes the middle section of lock spring piece at second base and both ends of lock spring piece at first base through a plurality of screws.
As a further technical scheme of the utility model: the inner cavity surface of the loading cavity and the outer peripheral surface of the base inner ring are corresponding spherical sliding surfaces, and an end head section penetrating out of the cavity opening is formed on each cavity opening of the loading cavity corresponding to the base inner ring.
As a further technical scheme of the utility model: the artificial radius small head is of a cylindrical structure, a mounting screw hole is formed in the center of the bottom end of the artificial radius small head, and a screw connection section which can be detachably and screwed with the mounting screw hole is formed at the upper end of the artificial radius prosthesis handle corresponding to the mounting screw hole of the artificial radius small head.
As a further technical scheme of the utility model: the upper ulnar joint base and the inner ring of the base are made of titanium alloy.
As a further technical scheme of the utility model: the artificial radius small head is a nano ceramic bone body.
As a further technical scheme of the utility model: the artificial radius prosthesis handle is made of titanium alloy, and a porous ceramic coating is arranged at the lower end of the artificial radius prosthesis handle inserted along the radial marrow cavity.
As a further technical scheme of the utility model: the medical artificial ulnar joint prosthesis can be made of titanium alloy materials through 3D printing.
Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a medical artificial upper ulna-radius joint prosthesis, which is matched with an upper ulna-radius joint base, a base inner ring, an artificial radius-radius prosthesis handle and an artificial radius small head, after the artificial radius-radius prosthesis handle is arranged on a radius, the upper ulna-radius joint base and the base inner ring can realize normal rotation of the whole radius, a ball socket structure can generate 360 degrees of mobility, and the medical artificial upper ulna-radius joint prosthesis can be effectively used for congenital upper ulna-radius joint fusion, radius small head replacement of radius small head fracture, and upper ulna-radius joint reconstruction operation of radius small head replacement needed by other reasons, and can reconstruct the upper ulna-radius joint and recover forearm rotation function; and the artificial small head of the radius is used for replacing the radius part of the humerus and the external condyle of the humerus of a human body to form the humerus joint, so that the humerus joint can be rebuilt, the elbow joint buckling function can be recovered, and the elbow joint eversion deformity can be prevented.
Drawings
Fig. 1 is an exploded view of a medical artificial superior ulnar joint prosthesis.
Fig. 2 is an assembled view of a medical artificial superior ulnar joint prosthesis.
Fig. 3 is a schematic view showing the mounting between the first base and the second base being fixed by the lock spring piece in cooperation with the screw.
Detailed Description
The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the scope of the utility model.
Referring to fig. 1 and 2, a medical artificial upper ulnar joint prosthesis comprises an upper ulnar joint base 10, a base inner ring 20, an artificial radius prosthesis handle 30 and an artificial radius small head 40; the upper ulnar joint base 10 is provided with a connecting section 11 on one side and a base body 12 on the other side, the connecting section 11 is used for fixedly connecting with ulna, the base body 12 is internally provided with a loading cavity 101, and the loading cavity 101 is provided with a cavity opening 102 penetrating through the top end and the bottom end of the base body 12; the base inner ring 20 is rotatably installed in the loading cavity 101, the base inner ring 20 is provided with a through hole 21 penetrating through the top end and the bottom end of the base inner ring, and the through hole 21 corresponds to the cavity opening 102 of the loading cavity 101 in a straight line; the lower end of the artificial radius prosthesis stem 30 is configured to be inserted along the radius medullary cavity and fixedly connected with the radius, and the upper end of the artificial radius prosthesis stem 30 extends above the seat 12 after passing through the through hole 21 of the inner ring 20 of the base, and the artificial radius small head 40 is detachably mounted thereon.
Further, the inner cavity surface of the loading cavity 101 and the outer peripheral surface of the base inner ring 20 are corresponding spherical sliding surfaces, and the base inner ring 20 is formed with a tip section 22 penetrating from the cavity opening 102 corresponding to each cavity opening 102 of the loading cavity 101, so that the base inner ring 20 can rotate in the loading cavity 101.
Further, the connecting section 11 is in a round rod shape extending towards the ulna and penetrating into the ulna, and threads for fixing the connecting section 11 into the ulna are arranged on the outer circumferential surface of the connecting section 11.
Further, referring to fig. 3 in combination, the housing 12 includes a first base 121 integrally connected with the connection section 11 and a second base 122 detachably mounted to the first base 121, and the loading chamber 101 is formed between the first base 121 and the second base 122. In this embodiment, the first base 121 and the second base 122 are fixed by the lock spring piece 123 and the screws 124, and after the lock spring piece 123 locks and fixes the first base 121 and the second base 122, the middle section of the lock spring piece 123 is fixed on the second base 122 and both ends of the lock spring piece 123 are fixed on the first base 121 by the screws 124. In addition, the installation between the first base 121 and the second base 122 includes, but is not limited to, fixing the first base 121 and the second base 122 by the lock spring 123 and the screw 124, and the screw 124 may be directly used to connect the first base 121 and the second base 122.
Further, the artificial radius small head 40 is in a cylindrical structure, a mounting screw hole 41 is concavely formed in the center of the bottom end of the artificial radius small head 40, and a screw section 301 which can be detachably screw-mounted with the mounting screw hole 41 is formed at the upper end of the artificial radius prosthesis handle 30 corresponding to the mounting screw hole 41 of the artificial radius small head 40.
Further, in this embodiment, the upper ulnar joint base 10 and the base inner ring 20 are made of titanium alloy, which has the characteristics of high specific strength, mechanical properties close to those of human bones, strength far superior to that of pure titanium, fatigue resistance, corrosion resistance, excellent biocompatibility and the like.
Further, in this embodiment, the artificial radius small head 40 is a nano ceramic bone body, has excellent affinity with biological tissue, can resist thrombosis, has good sterilization performance, and has good physical and chemical stability.
Further, in this embodiment, the artificial radius prosthesis stem 30 is made of titanium alloy, and has the characteristics of high specific strength, mechanical properties close to those of human bone, strength far superior to that of pure titanium, fatigue resistance, corrosion resistance, excellent biocompatibility and the like.
Furthermore, the lower end of the artificial radius prosthesis handle 30 inserted along the radial marrow cavity is provided with a conical porous ceramic coating 31, which has bone growth inducibility, is favorable for fixing the artificial radius prosthesis handle 30, and has the characteristics of fatigue resistance, corrosion resistance, excellent biocompatibility and the like.
It can be appreciated that the method for installing the medical artificial ulnar joint prosthesis comprises the following steps: first, the connecting section 11 of the upper ulnar base 10 is fixed into the ulna; second, after the artificial radius small head 40 is mounted on the upper end of the artificial radius prosthesis stem 30 and the base inner ring 20 is sleeved on the upper end of the artificial radius prosthesis stem 30, the lower end of the artificial radius prosthesis stem 30 is inserted and fixed in the radius; third, the second base 122 is installed in correspondence with the first base 121, and the base inner ring 20 is rotatably fitted into the fitting chamber 101 of the base body 12 while the base body 12 of the upper ulnar joint base 10 is assembled; thereby completing the installation of the medical artificial ulnar joint prosthesis. In addition, the medical artificial ulnar joint prosthesis can be made of 3D printing titanium alloy materials, can be customized according to individuation, completely meets the requirements of patient anatomy and biomechanics, recovers functions of the upper ulnar joint and the brachiocephalic joint to the maximum extent, and prevents deformity.
In summary, according to the medical artificial ulnar joint prosthesis, through the cooperation among the upper ulnar joint base 10, the base inner ring 20, the artificial radius prosthesis handle 30 and the artificial radius small head 40, after the artificial radius prosthesis handle 30 is installed on a radius, the normal rotation of the whole radius can be realized through the upper ulnar joint base 10 and the base inner ring 20, the ball and socket structure can generate 360 degrees of mobility, and the medical artificial ulnar joint prosthesis can be effectively used for congenital upper ulnar joint fusion, radius small head replacement of radius small head fracture, and upper ulnar joint reconstruction operation of radius small head replacement needed by other reasons, and can reconstruct the upper ulnar joint and recover the forearm rotation function; and the artificial small head 40 replaces the radius part of the humerus and the external condyle of the humerus to form the humerus joint, so that the humerus joint can be rebuilt, which is beneficial to restoring the elbow joint buckling function and preventing the elbow joint eversion deformity.
Any combination of the various embodiments of the utility model should be considered as being within the scope of the present disclosure, as long as the inventive concept is not violated; within the scope of the technical idea of the utility model, any combination of various simple modifications and different embodiments of the technical proposal without departing from the inventive idea of the utility model should be within the scope of the utility model.
Claims (10)
1. A medical artificial ulnar joint prosthesis, which is characterized in that: comprises an upper ulnar joint base (10), a base inner ring (20), an artificial radius prosthesis handle (30) and an artificial radius small head (40); the upper ulnar joint base (10) is provided with a connecting section (11) on one side and a base body (12) on the other side, the connecting section (11) is fixedly connected with ulna, the base body (12) is internally provided with a loading cavity (101), and the loading cavity (101) is provided with a cavity opening (102) penetrating through the top end and the bottom end of the base body (12); the base inner ring (20) can be rotatably arranged in the loading cavity (101), the base inner ring (20) is provided with a through hole (21) penetrating through the top end and the bottom end of the base inner ring, and the through hole (21) corresponds to the cavity opening (102) of the loading cavity (101) in a straight line; the lower end of the artificial radius prosthesis handle (30) is used for being inserted along a radius marrow cavity and fixedly connected with a radius, and the upper end of the artificial radius prosthesis handle (30) extends to the upper part of the seat body (12) after passing through the through hole (21) of the base inner ring (20) and is detachably provided with the artificial radius small head (40) thereon.
2. The medical artificial superior ulnar joint prosthesis of claim 1, wherein: the connecting section (11) is in a round rod shape extending towards the ulna and penetrating into the ulna, and threads for fixing the connecting section (11) into the ulna are arranged on the outer circumferential surface of the connecting section (11).
3. The medical artificial superior ulnar joint prosthesis of claim 1, wherein: the seat body (12) comprises a first base (121) integrally connected with the connecting section (11) and a second base (122) detachably mounted with the first base (121), and the loading cavity (101) is formed between the first base (121) and the second base (122).
4. A medical artificial superior ulnar joint prosthesis according to claim 3, wherein: the installation between first base (121) and second base (122) is fixed through locking spring piece (123) cooperation screw (124), supplies locking spring piece (123) to fix first base (121) and second base (122) lock after, fixes the middle section of locking spring piece (123) at second base (122) and both ends of locking spring piece (123) at first base (121) through a plurality of screws (124).
5. The medical artificial superior ulnar joint prosthesis of claim 1, wherein: the inner cavity surface of the loading cavity (101) and the outer peripheral surface of the base inner ring (20) are spherical sliding spheres, and the base inner ring (20) is provided with a head section (22) penetrating out of the cavity opening (102) corresponding to each cavity opening (102) of the loading cavity (101).
6. The medical artificial superior ulnar joint prosthesis of claim 1, wherein: the artificial radius small head (40) is of a cylindrical structure, a mounting screw hole (41) is formed in the center of the bottom end of the artificial radius small head (40), and a screw connection section (301) which can be detachably and screwed with the mounting screw hole (41) is formed in the upper end of the artificial radius prosthesis handle (30) corresponding to the mounting screw hole (41) of the artificial radius small head (40).
7. The medical artificial superior ulnar joint prosthesis of claim 1, wherein: the upper ulnar joint base (10) and the base inner ring (20) are made of titanium alloy.
8. The medical artificial superior ulnar joint prosthesis of claim 1, wherein: the artificial radius small head (40) is a nano ceramic bone body.
9. The medical artificial superior ulnar joint prosthesis of claim 1, wherein: the artificial radius prosthesis handle (30) is made of titanium alloy, and a porous ceramic coating (31) is arranged at the lower end of the artificial radius prosthesis handle (30) inserted along the radius marrow cavity.
10. The medical artificial superior ulnar joint prosthesis according to any one of claims 1-9, wherein: titanium alloy material can be printed through 3D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320192172.8U CN219661998U (en) | 2023-02-09 | 2023-02-09 | Medical artificial ulnar joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320192172.8U CN219661998U (en) | 2023-02-09 | 2023-02-09 | Medical artificial ulnar joint prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219661998U true CN219661998U (en) | 2023-09-12 |
Family
ID=87899335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320192172.8U Active CN219661998U (en) | 2023-02-09 | 2023-02-09 | Medical artificial ulnar joint prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219661998U (en) |
-
2023
- 2023-02-09 CN CN202320192172.8U patent/CN219661998U/en active Active
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