Thumb carpometacarpal joint artificial implant
A carpometacarpal joint and artificial implant technology, which is applied in the field of thumb carpal metacarpal joint artificial implants, can solve problems such as difficulty in precise positioning, increased surgical difficulty in reconstructing the attachment end of the abductor longus longus tendon, and displacement of surgical sutures.
Inactive Publication Date: 2015-12-23
苏芳庆
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Problems solved by technology
In addition, the reserved surgical sutures are often pushed into the bone marrow cavity by the artificial joint implants when the artificial joint implant is implanted into the bone marrow cavity, resulting in displacement of the surgical sutures, making it difficult to locate accurately, and Or, the reserved surgical sutures are destroyed during the implantation of the prosthetic joint, thus increasing the difficulty of reconstruction of the abductor thumb longus tendon attachment
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[0027] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments of the present invention will be exemplified below, together with the accompanying drawings, and described in detail as follows. Furthermore, the directional terms mentioned in the present invention are, for example, up, down, top, bottom, front, back, left, right, inside, outside, side, surrounding, central, horizontal, transverse, vertical, longitudinal, axial, The radial direction, the uppermost layer or the lowermost layer, etc. are only directions referring to the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.
[0028] Please refer to Figure 1A As shown, the artificial implant 100 of the thumb carpometacarpal joint in a preferred embodiment of the present invention is used to replace a thumb carpometacarpal joint surfac...
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The invention discloses an artificial implant for the carpometacarpal joint. The artificial implant is used for arthroplasty of the carpometacarpal joint surface of the first metacarpal bone and comprises an insert portion, an arthroplasty portion and an attached flange. The insert portion is provided with an insert end and a front end, the insert end is inserted into a marrow cavity exposed in an incision of the first metacarpal bone. The arthroplasty portion is connected to the front end of the insert portion and arranged outside the incision of the first metacarpal bone and is provided with a joint profile surface so as to substitute for the carpometacarpal joint surface of the first metacarpal bone. The attached flange is convexly arranged at a rim of the arthroplasty portion and used for flatly attaching to an exoskeleton surface of the incision adjacent to the first metacarpal bone. Besides, the attached flange is provided with at least one suture through hole for at least one suture to pass, so that abductor pollicis longus can be assisted in being fixed to the surface of the exoskeleton.
Description
technical field [0001] The invention relates to an artificial joint implant, in particular to an artificial implant of the thumb carpal metacarpal joint which is convenient for using surgical sutures. Background technique [0002] Osteoarthritis is a disease that affects the joints. Osteoarthritis occurs when the cartilage in the joints becomes damaged or worn away, causing stiffness, pain and loss of function in the affected joints. Osteoarthritis most commonly occurs in the hip, knee, spine and hand joints (such as the joints of the palm and thumb). Among them, thumb carpometacarpal joint (CMC) arthritis is one of the most important issues in degenerative arthritis of the upper limbs. The thumb carpalmetacarpal joint (CMC) is located anatomically at the base of the thumb, distal to the first metacarpal bone and proximal to the trapezium on the radius side. The thumb carpal metacarpal joint (CMC) can extend, adduct, abduct and rotate, and is the joint with the largest amo...
Claims
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IPC IPC(8): A61F2/42
CPCA61F2/4241A61F2002/30001
Inventor 林暐智吴柏廷苏芳庆
Owner 苏芳庆