CN110538007A - Elbow joint prosthesis - Google Patents
Elbow joint prosthesis Download PDFInfo
- Publication number
- CN110538007A CN110538007A CN201910867246.1A CN201910867246A CN110538007A CN 110538007 A CN110538007 A CN 110538007A CN 201910867246 A CN201910867246 A CN 201910867246A CN 110538007 A CN110538007 A CN 110538007A
- Authority
- CN
- China
- Prior art keywords
- head
- component
- ulnar
- humeral
- humerus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000002310 elbow joint Anatomy 0.000 title claims abstract description 27
- 210000000623 ulna Anatomy 0.000 claims abstract description 26
- 210000004095 humeral head Anatomy 0.000 claims description 37
- 210000002758 humerus Anatomy 0.000 abstract description 67
- 230000001766 physiological effect Effects 0.000 description 4
- 230000006399 behavior Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 108010048734 sclerotin Proteins 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3804—Joints for elbows or knees for elbows
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3804—Joints for elbows or knees for elbows
- A61F2002/3813—Joints for elbows or knees for elbows for ulno-humeral joints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3804—Joints for elbows or knees for elbows
- A61F2002/3822—Humeral components
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3804—Joints for elbows or knees for elbows
- A61F2002/3831—Ulnar components
Abstract
The invention provides an elbow joint prosthesis which is provided with a connecting component, a humerus component, an ulna component and a radius component, wherein the humerus component comprises a humerus handle and a humerus head arranged at one end of the humerus handle, the position of the humerus head can be adjusted, the humerus head is connected with the connecting component, and the humerus head can swing relative to the connecting component along a first axis to adjust the position; the ulnar component comprises an ulnar handle and an ulnar head arranged at one end of the ulnar handle, the ulnar head is arranged on the connecting component in a swinging way, the ulnar head can swing relative to the connecting component along a second axis, and the second axis is vertical to the first axis; the radial member is provided on the connecting member, and the radial member is movable within a predetermined range relative to the connecting member. By adopting the technical scheme, the angle adjustment of the humerus component and the ulna component in two different directions can be realized so as to meet the use requirements of different patients. The radial component is arranged to facilitate the movement of the patient and avoid the damage caused by the overlarge movement range.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an elbow joint prosthesis.
Background
when the elbow joint is injured by rheumatism, a deformed joint, or trauma, the function of the elbow joint is lost, and severe pain is felt. In this case, in order to restore the function of the elbow joint, a replacement operation of the artificial elbow joint is required. For example, during a total elbow replacement procedure, a surgeon implants a prosthetic humeral component into the distal end of the patient's humerus and a prosthetic ulnar component into the proximal end of the patient's ulna. The relative positions of the humerus component and the ulna component in the existing elbow joint prosthesis are not easy to adjust, the universality is poor, and the use requirements of patients cannot be met.
Disclosure of Invention
The invention provides an elbow joint prosthesis, which aims to solve the problem that the relative positions of a humerus component and an ulna component of the elbow joint prosthesis in the prior art are not easy to adjust.
in order to solve the above problems, the present invention provides an elbow joint prosthesis comprising: a connecting member; the humerus component comprises a humerus handle and a humerus head arranged at one end of the humerus handle, the position of the humerus head is adjustable, the humerus head is connected with the connecting component, and the humerus head can swing relative to the connecting component along a first axis to adjust the position; the ulnar component comprises an ulnar handle and an ulnar head arranged at one end of the ulnar handle, the ulnar head is arranged on the connecting component in a swinging manner, the ulnar head can swing relative to the connecting component along a second axis, and the second axis is vertical to the first axis; a radius part disposed on the connecting part, the radius part being movable within a predetermined range with respect to the connecting part.
Further, the connecting part comprises a first connecting part and a second connecting part which are detachably connected, the position of the humerus head is adjustably connected with the first connecting part, the ulnar head is arranged on the second connecting part in a swinging mode, and the radius part is movably arranged on the second connecting part.
Further, the humeral head has a plurality of teeth thereon, and the first connecting portion includes: the first connecting piece is provided with a plurality of teeth, the humerus head is detachably connected with the first connecting piece, and the plurality of teeth on the humerus head are in position-adjustable limit fit with the plurality of teeth on the first connecting piece; the second connecting piece is connected with the first connecting piece, the second connecting part is arranged on the second connecting piece in a penetrating mode, and the ulna component is hinged to the second connecting part.
Further, the humeral head includes a first body connected with the humeral stem and a plurality of teeth disposed on the first body, the plurality of teeth of the humeral head being disposed on one side of the first body around the first axis; the first connecting piece comprises a second body and a plurality of teeth arranged on the second body, the second body is connected with the second connecting portion, and the plurality of teeth of the first connecting piece are arranged on one side of the second body around the first axis.
Further, the elbow prosthesis may further include a fastener removably coupled to the first connector and the humeral head to fixedly couple the humeral head to the first connector after the relative position of the humeral head to the first connector is adjusted.
Furthermore, the second connecting piece comprises a supporting piece and two limiting rings arranged on the supporting piece at intervals, the supporting piece is connected with the first connecting piece, the second connecting part penetrates through the two limiting rings, the ulna head is located between the two limiting rings, and the two sides of the ulna head are in one-to-one corresponding limiting fit with the two limiting rings.
furthermore, the ulna head comprises a barrel body and a limiting part which is convexly arranged on the outer wall of the barrel body, at least one of the barrel body and the limiting part is connected with the ulna handle, the barrel body is sleeved on the second connecting part to swing relative to the connecting part along the second axis, and two sides of the limiting part are in one-to-one corresponding limiting fit with two sides of the supporting part to limit the rotating range of the barrel body.
Furthermore, the second connecting portion is of a columnar structure, the second connecting portion penetrates through the first connecting portion, a groove is formed in one end of the second connecting portion, and the radius component is movably arranged in the groove.
Furthermore, a limiting groove is formed in the side wall of the groove, and the two side walls of the limiting groove are respectively in limiting fit with the radius component so as to limit the moving range of the radius component.
Further, the radius part comprises a ball head, an intermediate rod and a radius handle which are connected in sequence, wherein the ball head is rotatably arranged in the groove, and an included angle is formed between the extending direction of the intermediate rod and the extending direction of the radius handle.
By applying the technical scheme of the invention, the elbow joint prosthesis is provided with a connecting component, a humerus component, an ulna component and a radius component, wherein the humerus component comprises a humerus handle and a humerus head arranged at one end of the humerus handle, the position of the humerus head can be adjusted, the humerus head is connected with the connecting component, and the humerus head can swing relative to the connecting component along a first axis to adjust the position; the ulnar component comprises an ulnar handle and an ulnar head arranged at one end of the ulnar handle, the ulnar head is arranged on the connecting component in a swinging way, the ulnar head can swing relative to the connecting component along a second axis, and the second axis is vertical to the first axis; the radial member is provided on the connecting member, and the radial member is movable within a predetermined range relative to the connecting member. By adopting the technical scheme, the angle adjustment of the humerus component and the ulna component in two different directions can be realized, wherein the humerus head can swing relative to the connecting component along the first axis to adjust the relative position with the ulna component in one direction, the humerus head is implanted into a patient body after being adjusted so as to meet the use requirements of different patients, the ulna head can swing relative to the connecting component along the second axis, and the physiological activity requirements of the patient can be met after the ulna head is implanted. Moreover, the radius part can move in a preset range relative to the connecting part, so that the movement of a patient is convenient, and damage caused by overlarge moving range can be avoided.
The elbow joint prosthesis not only accords with the motion characteristics of daily behaviors of a human body, but also has good stability and safety, can be partially replaced or completely replaced, improves the biocompatibility with sclerotin, is not easy to cause complications such as looseness, infection, instability and the like, and has long service life.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic structural diagram of an elbow prosthesis provided by an embodiment of the present invention;
Figure 2 shows a side view of the elbow prosthesis of figure 1;
Fig. 3 shows a partial schematic structural view of the humeral component of fig. 1;
Fig. 4 is a schematic view showing a first connection portion among the connection members of fig. 1;
FIG. 5 shows a schematic view of the ulnar component of FIG. 1;
fig. 6 is a schematic view showing a structure of a second connection part among the connection parts of fig. 1;
Fig. 7 shows a schematic view of the radial component of fig. 1.
wherein the figures include the following reference numerals:
10. A connecting member; 11. a first connection portion; 12. a second connecting portion; 13. a first connecting member; 14. a second connecting member; 15. a support member; 16. a limiting ring; 17. a groove; 18. a limiting groove; 20. a humeral component; 21. a humeral stem; 22. a humeral head; 30. an ulnar component; 31. a ulna stem; 32. an ulnar head; 33. a barrel; 34. a limiting member; 40. a radial component; 41. a ball head; 42. an intermediate lever; 43. a radius handle.
Detailed Description
the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 7, an embodiment of the present invention provides an elbow joint prosthesis including: a connecting member 10; a humerus component 20, wherein the humerus component 20 includes a humerus stem 21 and a humerus head 22 disposed at one end of the humerus stem 21, the humerus head 22 is connected with the connecting component 10 in a position-adjustable manner, and the humerus head 22 can swing along a first axis relative to the connecting component 10 for position adjustment; an ulnar component 30, the ulnar component 30 including an ulnar stem 31 and an ulnar head 32 disposed at one end of the ulnar stem 31, the ulnar head 32 being swingably disposed on the connecting member 10, the ulnar head 32 being swingable relative to the connecting member 10 along a second axis, the second axis being perpendicular to the first axis; a radius part 40, the radius part 40 being provided on the connecting member 10, the radius part 40 being movable within a predetermined range with respect to the connecting member 10.
By applying the technical scheme of the embodiment, a connecting component 10, a humerus component 20, an ulna component 30 and a radius component 40 are arranged in the elbow joint prosthesis, wherein the humerus component 20 comprises a humerus stem 21 and a humerus head 22 arranged at one end of the humerus stem 21, the humerus head 22 is connected with the connecting component 10 in an adjustable position, and the humerus head 22 can swing relative to the connecting component 10 along a first axis to perform position adjustment; the ulnar component 30 includes an ulnar stem 31 and an ulnar head 32 disposed at one end of the ulnar stem 31, the ulnar head 32 being swingably disposed on the connecting member 10, the ulnar head 32 being swingable relative to the connecting member 10 along a second axis perpendicular to the first axis; the radius part 40 is provided on the connecting member 10, and the radius part 40 is movable within a predetermined range with respect to the connecting member 10. By adopting the technical scheme, the angle adjustment of the humerus component 20 and the ulna component 30 in two different directions can be realized, wherein the humerus head 22 can swing relative to the connecting component 10 along the first axis to adjust the relative position with the ulna component 30 in one direction, and after being adjusted, the humerus head 22 is implanted into a patient body so as to meet the use requirements of different patients, and the ulna head 32 can swing relative to the connecting component 10 along the second axis to meet the physiological activity requirements of the patient after being implanted. Moreover, the radial portion 40 can move within a predetermined range relative to the connecting portion 10, which facilitates the patient's movement and prevents damage due to an excessive range of movement.
In this embodiment, the connecting member 10 includes a first connecting portion 11 and a second connecting portion 12, the first connecting portion 11 and the second connecting portion 12 are detachably connected, the humeral head 22 is connected to the first connecting portion 11 with an adjustable position, the ulnar head 32 is swingably provided on the second connecting portion 12, and the radius member 40 is movably provided on the second connecting portion 12. Through the arrangement, the arrangement and the connection of all the parts are facilitated. The humeral head 22 is positionally adjustable in connection with the first connection part 11, allowing for relative positional adjustment of the humeral component 20 and the connection part 10, and after adjustment, can be fixed to determine the positional relationship between the two.
In this embodiment, the humeral head 22 has a plurality of teeth thereon, and the first coupling portion 11 includes: a first connecting piece 13, wherein the first connecting piece 13 is provided with a plurality of teeth, a humerus head 22 is detachably connected with the first connecting piece 13, and the plurality of teeth on the humerus head 22 are in position-adjustable limit fit with the plurality of teeth on the first connecting piece 13; and a second connecting part 14 connected with the first connecting part 13, wherein the second connecting part 12 is arranged on the second connecting part 14 in a penetrating way, and the ulnar component 30 is hinged with the second connecting part 12. Thus, the relative position of the plurality of teeth on the humeral head 22 and the plurality of teeth on the first connector 13 can be adjusted to adjust the angle of the humeral component 20 relative to the first connector 13, and after the angle is adjusted, the humeral component can be limited by the engagement of the teeth. It can be understood that when the position adjustment is required, the humeral head 22 is detached from the first connecting member 13, the humeral head 22 is connected to the first connecting member 13 after the adjustment, and the humeral head 22 and the first connecting member 13 are limited by the engagement of the plurality of teeth on the humeral head 22 and the plurality of teeth on the first connecting member 13, so as to avoid looseness. The ulnar component 30 is hinged to the second connecting portion 12 to facilitate physiological activities.
specifically, the humeral head 22 includes a first body connected with the humeral stem 21 and a plurality of teeth disposed on the first body, the plurality of teeth of the humeral head 22 being disposed on one side of the first body around a first axis; the first link 13 includes a second body connected to the second link 12 and a plurality of teeth provided on the second body, the plurality of teeth of the first link 13 being provided on one side of the second body around the first axis. After rotating a certain angle, the teeth of the humeral head 22 can be engaged with the teeth of the first connecting member 13, so that reliable position limitation is realized, loosening is avoided, and the reliability of long-term implantation of the prosthesis is ensured.
In this embodiment, the elbow prosthesis further includes a fastener removably coupled to the first connector 13 and the humeral head 22 to fixedly couple the humeral head 22 to the first connector 13 after the relative position of the humeral head 22 to the first connector 13 is adjusted. This allows for the removal and secure attachment of humeral head 22 to first connector 13 by a fastener.
in this embodiment, the second connecting member 14 includes a supporting member 15 and two limiting rings 16 disposed on the supporting member 15 at intervals, the supporting member 15 is connected to the first connecting member 13, the second connecting member 12 is inserted through the two limiting rings 16, the ulnar head 32 is located between the two limiting rings 16, and two sides of the ulnar head 32 are in one-to-one spacing fit with the two limiting rings 16. The second connecting part 12 and the second connecting part 14 can be connected in a plugging mode, and two sides of the ulnar head 32 can be limited by the two limiting rings 16 so as to avoid loosening.
In this embodiment, the ulnar head 32 includes a barrel 33 and a stopper 34 protruding from the outer wall of the barrel 33, at least one of the barrel 33 and the stopper 34 is connected to the ulnar stem 31, the barrel 33 is sleeved on the second connecting portion 12 to swing along the second axis relative to the connecting portion 10, and two sides of the stopper 34 are in one-to-one spacing fit with two sides of the supporting member 15 to limit the rotation range of the barrel 33. The barrel 33 is fitted over the second connecting portion 12 to facilitate the swinging of the ulnar head 32 relative to the connecting member 10. Moreover, the two sides of the limiting piece 34 are in one-to-one corresponding limiting fit with the two sides of the supporting piece 15, so that the rotation range of the cylinder 33 can be limited, and the elbow joint can be prevented from exceeding the normal moving range.
in this embodiment, the second connecting portion 12 is a column-shaped structure, the second connecting portion 12 is inserted into the first connecting portion 11, one end of the second connecting portion 12 has a groove 17, and the radius component 40 is movably disposed in the groove 17. With the above arrangement, the second connection portion 12 is connected to the first connection portion 11. Furthermore, one end of the second connecting portion 12 has a recess 17 to facilitate the movement of the radius portion 40 to meet the movement requirement of the human body.
Furthermore, the side wall of the groove 17 is provided with a limiting groove 18, and two side walls of the limiting groove 18 are respectively in limiting fit with the radius part 40 so as to limit the moving range of the radius part 40. Through the arrangement, the movement of the radius part 40 can be limited, so that damage caused by excessive movement is avoided. The limiting groove 18 is arranged, so that the structure is simple and the processing is convenient.
in the present embodiment, the radius component 40 includes a ball 41, an intermediate rod 42 and a radius shaft 43 connected in sequence, wherein the ball 41 is rotatably disposed in the recess 17, and the extending direction of the intermediate rod 42 forms an angle with the extending direction of the radius shaft 43. The ball head 41 is rotatably arranged in the groove 17, so that multi-angle movement can be realized, and the movement of the radius part 40 is facilitated.
Alternatively, the inner surface of the recess 17 is a portion of a sphere, which better matches the ball head 41. The middle rod 42 passes through the limiting groove 18, and the middle rod 42 is in limiting fit with two side walls of the limiting groove 18, so that the moving range of the radius part 40 is limited.
By applying the technical scheme of the invention, the elbow joint prosthesis is provided with a connecting component 10, a humerus component 20, an ulna component 30 and a radius component 40, wherein the humerus component 20 comprises a humerus handle 21 and a humerus head 22 arranged at one end of the humerus handle 21, the position of the humerus head 22 can be adjusted, the humerus head 22 is connected with the connecting component 10, and the humerus head 22 can swing relative to the connecting component 10 along a first axis to adjust the position; the ulnar component 30 includes an ulnar stem 31 and an ulnar head 32 disposed at one end of the ulnar stem 31, the ulnar head 32 being swingably disposed on the connecting member 10, the ulnar head 32 being swingable relative to the connecting member 10 along a second axis perpendicular to the first axis; the radius part 40 is provided on the connecting member 10, and the radius part 40 is movable within a predetermined range with respect to the connecting member 10. By adopting the technical scheme, the angle adjustment of the humerus component 20 and the ulna component 30 in two different directions can be realized, wherein the humerus head 22 can swing relative to the connecting component 10 along the first axis to adjust the relative position with the ulna component 30 in one direction, and after being adjusted, the humerus head 22 is implanted into a patient body so as to meet the use requirements of different patients, and the ulna head 32 can swing relative to the connecting component 10 along the second axis to meet the physiological activity requirements of the patient after being implanted. Moreover, the radial portion 40 can move within a predetermined range relative to the connecting portion 10, which facilitates the patient's movement and prevents damage due to an excessive range of movement.
The invention provides an elbow joint prosthesis, which comprises a humerus component, an ulna component, a radius component and a connecting component, wherein the humerus component comprises a humerus stem and a humerus head. Optionally, the humeral head has an adjustment accuracy of 1 ° (smaller angles can be made) with the first connector, and the humeral head or the first connector has a graduation mark to facilitate precise position adjustment. The purpose of adjusting the angle of the humeral component is achieved by adjusting the humeral head and the first connector. The second connecting piece can be matched with the second connecting part to achieve the purpose of rotation.
Optionally, the humeral component also includes a trabecular bone structure disposed on the humeral stem so that it can be well integrated with the bone at a later stage with good long-term stability. The radius component includes a radius head and a radius shaft, the radius head being received in the recess of the connecting component and having a certain rotational characteristic while also preventing excessive eversion of the elbow joint.
The elbow joint prosthesis not only accords with the motion characteristics of daily behaviors of a human body, but also has good stability and safety, can be partially replaced or completely replaced, improves the biocompatibility with sclerotin, is not easy to cause complications such as looseness, infection, instability and the like, and has long service life.
the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. an elbow prosthesis, comprising:
a connecting member (10);
A humeral component (20), wherein the humeral component (20) comprises a humeral stem (21) and a humeral head (22) arranged at one end of the humeral stem (21), the humeral head (22) is connected with the connecting component (10) in a position-adjustable manner, and the humeral head (22) can swing along a first axis relative to the connecting component (10) for position adjustment;
An ulnar component (30), the ulnar component (30) including an ulnar stem (31) and an ulnar head (32) disposed at one end of the ulnar stem (31), the ulnar head (32) being swingably disposed on the connecting member (10), the ulnar head (32) being swingable relative to the connecting member (10) along a second axis, the second axis being perpendicular to the first axis;
A radial member (40), said radial member (40) being disposed on said connecting member (10), said radial member (40) being movable within a predetermined range relative to said connecting member (10).
2. The elbow joint prosthesis according to claim 1, wherein the connecting member (10) includes a first connecting portion (11) and a second connecting portion (12), the first connecting portion (11) and the second connecting portion (12) being detachably connected, the humeral head (22) being positionally adjustably connected with the first connecting portion (11), the ulnar head (32) being swingably provided on the second connecting portion (12), and the radius member (40) being movably provided on the second connecting portion (12).
3. The elbow prosthesis according to claim 2, wherein the humeral head (22) has a plurality of teeth thereon, and the first connection portion (11) comprises:
A first connector (13), the first connector (13) having a plurality of teeth thereon, the humeral head (22) being detachably connected to the first connector (13), the plurality of teeth on the humeral head (22) being positionally adjustable in a positive fit with the plurality of teeth on the first connector (13);
The second connecting piece (14) is connected with the first connecting piece (13), the second connecting part (12) penetrates through the second connecting piece (14), and the ulna component (30) is hinged to the second connecting part (12).
4. The elbow joint prosthesis of claim 3,
The humeral head (22) comprises a first body connected with the humeral stem (21) and a plurality of teeth disposed on the first body, the plurality of teeth of the humeral head (22) being disposed on one side of the first body around the first axis;
The first connecting piece (13) comprises a second body and a plurality of teeth arranged on the second body, the second body is connected with the second connecting portion (12), and the plurality of teeth of the first connecting piece (13) are arranged on one side of the second body around the first axis.
5. the elbow prosthesis according to claim 3 further comprising a fastener removably connected with the first connector (13) and the humeral head (22) to fixedly connect the humeral head (22) with the first connector (13) after the relative position of the humeral head (22) and the first connector (13) is adjusted.
6. The elbow joint prosthesis according to claim 3, wherein the second connecting member (14) comprises a supporting member (15) and two limiting rings (16) arranged on the supporting member (15) at intervals, the supporting member (15) is connected with the first connecting member (13), the second connecting member (12) is arranged through the two limiting rings (16), the ulnar head (32) is positioned between the two limiting rings (16), and two sides of the ulnar head (32) are in limiting fit with the two limiting rings (16) in a one-to-one correspondence manner.
7. The elbow joint prosthesis according to claim 6, wherein the ulnar head (32) comprises a cylinder (33) and a limiting member (34) convexly disposed on an outer wall of the cylinder (33), at least one of the cylinder (33) and the limiting member (34) is connected with the ulnar stem (31), the cylinder (33) is sleeved on the second connecting portion (12) to swing along a second axis relative to the connecting member (10), and two sides of the limiting member (34) are in one-to-one limiting fit with two sides of the supporting member (15) to limit a rotation range of the cylinder (33).
8. The elbow joint prosthesis according to claim 2, wherein the second connecting portion (12) is a cylindrical structure, the second connecting portion (12) is inserted into the first connecting portion (11), one end of the second connecting portion (12) is provided with a groove (17), and the radius component (40) is movably disposed in the groove (17).
9. The elbow joint prosthesis according to claim 8, wherein the side wall of the recess (17) is provided with a limiting groove (18), and two side walls of the limiting groove (18) are respectively in limiting fit with the radius part (40) to limit the moving range of the radius part (40).
10. The elbow prosthesis according to claim 8, characterized in that the radial component (40) comprises a ball head (41), an intermediate rod (42) and a radial stem (43) connected in series, wherein the ball head (41) is rotatably arranged in the recess (17), and the intermediate rod (42) extends in an angle with the radial stem (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910867246.1A CN110538007B (en) | 2019-09-12 | Elbow joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910867246.1A CN110538007B (en) | 2019-09-12 | Elbow joint prosthesis |
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| CN110538007A true CN110538007A (en) | 2019-12-06 |
| CN110538007B CN110538007B (en) | 2024-04-12 |
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| CN115836931A (en) * | 2023-02-24 | 2023-03-24 | 北京爱康宜诚医疗器材有限公司 | Elbow joint prosthesis |
| CN115844597A (en) * | 2023-02-27 | 2023-03-28 | 北京积水潭医院 | Elbow joint prosthesis |
| CN116965981A (en) * | 2023-09-25 | 2023-10-31 | 北京爱康宜诚医疗器材有限公司 | Elbow joint prosthesis |
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| CN115836931A (en) * | 2023-02-24 | 2023-03-24 | 北京爱康宜诚医疗器材有限公司 | Elbow joint prosthesis |
| CN115844597A (en) * | 2023-02-27 | 2023-03-28 | 北京积水潭医院 | Elbow joint prosthesis |
| CN115844597B (en) * | 2023-02-27 | 2023-07-14 | 北京积水潭医院 | Elbow joint prosthesis |
| CN116965981A (en) * | 2023-09-25 | 2023-10-31 | 北京爱康宜诚医疗器材有限公司 | Elbow joint prosthesis |
| CN116965981B (en) * | 2023-09-25 | 2024-01-23 | 北京爱康宜诚医疗器材有限公司 | Elbow joint prosthesis |
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