US20140128984A1 - Artificial implant for carpometacarpal joint - Google Patents

Artificial implant for carpometacarpal joint Download PDF

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Publication number
US20140128984A1
US20140128984A1 US14/057,737 US201314057737A US2014128984A1 US 20140128984 A1 US20140128984 A1 US 20140128984A1 US 201314057737 A US201314057737 A US 201314057737A US 2014128984 A1 US2014128984 A1 US 2014128984A1
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United States
Prior art keywords
articular
artificial implant
carpometacarpal joint
bone
attached flange
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Abandoned
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US14/057,737
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English (en)
Inventor
I-Ming Jou
Wei-Jr Lin
Po-Ting Wu
Li-Chieh Kuo
Fong-Chin Su
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Individual
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Individual
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Assigned to SU, FONG-CHIN reassignment SU, FONG-CHIN ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JOU, I-MING, KUO, LI-CHIEH, LIN, WEI-JR, SU, FONG-CHIN, WU, PO-TING
Publication of US20140128984A1 publication Critical patent/US20140128984A1/en
Priority to US14/752,577 priority Critical patent/US9452058B2/en
Abandoned legal-status Critical Current

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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
    • A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4241—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06166—Sutures
    • 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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30252—Three-dimensional shapes quadric-shaped
    • A61F2002/30257—Three-dimensional shapes quadric-shaped paraboloidal
    • 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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30301—Three-dimensional shapes saddle-shaped
    • 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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30576—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
    • A61F2002/30578—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs having apertures, e.g. for receiving fixation screws
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2002/30934—Special articulating surfaces
    • 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
    • A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4241—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
    • A61F2002/4256—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers for carpo-metacarpal joints, i.e. CMC joints
    • A61F2002/4258—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers for carpo-metacarpal joints, i.e. CMC joints for trapezo-metacarpal joints of thumbs

Definitions

  • the present invention relates to an artificial implant, and more particularly to an artificial implant for a carpometacarpal (CMC) joint used with a surgical suture.
  • CMC carpometacarpal
  • Osteoarthritis is a disease that affects the joints. When intra-articular cartilage of the joints is damaged or worn, it causes osteoarthritis, and thus affects joint stiffness, pain and loss of function. Osteoarthritis commonly occurs in hip joint, knee joint, spinal joint and joints of the hand (such as palm and thumb joint).
  • the carpometacarpal (CMC) joint arthritis is one of the most important issue in the degenerative arthritis disease of the upper limb.
  • the CMC joint is located at the base portion of the thumb in anatomy, wherein a distal end of the CMC joint is a metacarpal bone, and a proximal end thereof is a trapezium close to the radial side.
  • the CMC joint is the most activity joint of hand joints and can stretch, bend, adduct, abduct and rotate. Thus, once the CMC joint is degenerated, lesioned or wounded, it will cause great influence in daily life.
  • the doctor When the medicament or injection can't be effective to relieve pain and can't further deal with the degenerative arthritis of the CMC joint, the doctor generally advise the patient to be treated by a hand joint surgery. Further, the design of the artificial implant and the development of material fabrication thereof are continuously improved, so that artificial implants are applied to clinical use day by day.
  • the injured CMC joint is replaced by arthroplasty surgery, and thus it not only reduces pain from arthritis, but also maintains the CMC joint activities and the behavior function of hand.
  • the arthroplasty is a surgically method for reducing the pain from arthritis and restoring the joint function.
  • the process of a traditional surgery for replacing an artificial CMC joint is firstly to crosscut a wound from the root of the thumb, then temporarily cut and remove the tendon of a abductor pollicis longus (APL) attached to the trapezium, open a joint capsule of the CMC joint, and abscise the damaged CMC joint surface at the proximal end of a first metacarpal to form an incision.
  • APL abductor pollicis longus
  • a portion of an implant is inserted into a bone marrow cavity of the first metacarpal from the incision at the proximal end of the first metacarpal.
  • a surgical suture is used to reconstruct the APL tendon cut during the surgery, followed by suturing the wound.
  • the surgical suture at both sides of the APL in advance.
  • the APL tendon can be attached on the outer surface of the first metacarpal by surgical suturing.
  • the steps of cutting the APL tendon or drilling holes on the first metacarpal both are to destroy the tissue of the metacarpal or the tendon before reconstruction.
  • the surgical suture arranged in advance is easily over-pushed into the bone marrow cavity by the artificial implant when the artificial implant is implanted into the bone marrow cavity. This causes the displacement of the surgical suture and thus it is difficult to carry out the precise positioning.
  • the surgical suture arranged in advance may be destroyed by the artificial implant when the artificial implant is implanted into the bone marrow cavity, it's thus more difficult to process the reconstruction surgery for the APL tendon.
  • a primary object of the present invention is to provide an artificial implant for a carpometacarpal (CMC) joint, wherein the artificial implant for the CMC joint has an attached flange to provide suture perforation, so as to omit the step of drilling holes on the first metacarpal.
  • This facilitates the surgical suture to be fixed onto the artificial joint implant without destroying the tendon of the abductor pollicis longus (APL).
  • APL abductor pollicis longus
  • an artificial implant for the carpometacarpal (CMC) joint which comprises:
  • an insert portion having an inserting end for inserting into a bone marrow cavity exposed from an incision of the first metacarpal bone, and a front end;
  • an articular replacement portion connected to the front end of the inserting portion and disposed outside the incision of the first metacarpal bone, and having an articular profile surface to replace the carpometacarpal joint surface of the first metacarpal bone;
  • an attached flange protruded from a peripheral of the articular replacement portion, attached to an outer bone surface of the first metacarpal bone adjacent to the incision, and having at least one suture hole;
  • At least one suture passes through the suture hole for assisting to fix an abductor pollicis longus (APL) to the outer bone surface.
  • APL abductor pollicis longus
  • the attached flange is integrally connected to the articular replacement portion through a tilting connection surface.
  • the articular profile surface of the articular replacement portion includes a major axis and a minor axis
  • the attached flange is protruded from the peripheral of the articular replacement portion
  • an included angle is defined between the attached flange and the major axis of the articular profile surface.
  • the attached flange is located at a position offsetting 0 to 45 degrees toward an outer side of a palm from an intersection point of the peripheral of the articular profile surface and the major axis of the articular profile surface.
  • a ratio of the length of the major axis of the articular profile surface of the articular replacement portion and the length of the attached flange is 10:1 to 2:1.
  • the suture hole is circular, oval or regular polygonal.
  • the insert portion, the articular replacement portion and the attached flange are integrated into one piece.
  • the material of the insert portion, the articular replacement portion and the attached flange are titanium, silica gel, zirconia or pyrocarbon.
  • the articular replacement portion and the attached flange are made of biocompatible metal or alloy and processed by powder injection molding and high-temperature sintering.
  • the articular profile surface is saddle-shaped, double parabolic concave discoid, single parabolic concave discoid, spherical, hemispherical, polygonal spherical or polygonal hemispherical.
  • FIG. 1A is a perspective view of an artificial implant for a carpometacarpal joint according to a preferred embodiment of the present invention
  • FIG. 1B is another perspective view of the artificial implant for the carpometacarpal joint according to the preferred embodiment of the present invention.
  • FIG. 2A is a schematic view of the artificial implant for the carpometacarpal joint according to the preferred embodiment of the present invention when cutting a wound from the skin of the root of the thumb;
  • FIG. 2B is a schematic view of the artificial implant for the carpometacarpal joint according to the preferred embodiment of the present invention when cutting and removing a damaged proximal end articular surface of the first metacarpal bone;
  • FIG. 2C is a schematic view of the artificial implant for the carpometacarpal joint according to the preferred embodiment of the present invention when the artificial implant for the carpometacarpal joint is inserted into the bone marrow cavity of the first metacarpal bone;
  • FIG. 2D is a schematic view of the artificial implant for the carpometacarpal joint according to the preferred embodiment of the present invention when a suture passes through the suture hole of an attached flange for assisting to fix an abductor pollicis longus to the outer bone surface.
  • an artificial implant 100 for a carpometacarpal (CMC) joint used for replacing a carpometacarpal joint articular surface of a first metacarpal bone is illustrated.
  • the artificial implant 100 for the carpometacarpal joint comprises: an insert portion 110 , an articular replacement portion 120 , and an attached flange 130 , wherein the insert portion 110 , the articular replacement portion 120 and the attached flange 130 are made of biocompatible metal or alloy, such as titanium, silica gel, zirconia or pyrocarbon.
  • the insert portion 110 , the articular replacement portion 120 and the attached flange 130 are made of biocompatible metal or alloy and processed by powder injection molding and high-temperature sintering; and the insert portion 110 , the articular replacement portion 120 and the attached flange 130 are preferably integrated into one piece, but not limited thereto.
  • the insert portion 110 has an inserting end 111 and a front end 112 , wherein the inserting end 111 is used for inserting into a bone marrow cavity exposed from an incision of the first metacarpal bone.
  • the articular replacement portion 120 is connected to the front end 112 of the insert portion 110 and disposed outside the incision of the first metacarpal bone, and has an articular profile surface 121 to replace the carpometacarpal joint surface of the first metacarpal bone, where in the articular profile surface 121 can be saddle-shaped, double parabolic concave discoid, single parabolic concave discoid, spherical, hemispherical, polygonal spherical or polygonal hemispherical for being corresponding to a remote portion surface of a trapezium.
  • the articular profile surface 121 of the articular replacement portion 120 when the articular profile surface 121 of the articular replacement portion 120 is saddle-shaped or double parabolic concave discoid, the articular profile surface 121 includes a major axis 120 a and a minor axis 120 b, wherein the attached flange 130 is integrally connected to the articular replacement portion 120 through a tilting connection surface 132 , and protruded from the peripheral of the articular replacement portion 120 ; and an included angle is defined between the attached flange 130 and the major axis 120 a of the articular profile surface 121 .
  • the attached flange 130 is located at a position offsetting 0 to 45 degrees toward an outer side of a palm from an intersection point of the peripheral of the articular profile surface 121 and the major axis 120 a of the articular profile surface 121 , for being corresponding to the location of an attached portion of a tendon of a abductor pollicis longus (APL).
  • APL abductor pollicis longus
  • a ratio of the length of the major axis 120 a of the articular profile surface 121 of the articular replacement portion 120 and the length of the attached flange 130 is 10:1 to 2:1, such as 5:1, but not limited thereto.
  • the attached flange 130 is protruded from an peripheral of the articular replacement portion 120 , and can be attached to an outer bone surface of the first metacarpal bone adjacent to the incision (i.e. corresponding to the location of the attached portion of the APL tendon), wherein the attached flange 130 has at least one suture hole 131 , such as one, two, three or four, but not limited thereto.
  • the suture hole 131 is circular, oval or regular polygonal, but not limited thereto.
  • the diameter of the suture hole 131 is set in accordance with at least one times of the diameter of the suture.
  • the diameter of the suture hole 131 can be set to be two times, three times or more of the diameter of the suture.
  • the attached flange 130 is preferred integrally connected to the peripheral the articular replacement portion 120 through a tilting connection surface 132 for increasing the connection strength with the articular replacement portion 120 .
  • the artificial implant 100 for a carpometacarpal joint is applied for arthroplasty surgery, for replacing the damaged carpometacarpal joint.
  • the surgical process comprises steps, as follows:
  • a wound is cut from the skin of the root of the thumb, and a portion of the APL tendon attached to the outer bone surface of the first metacarpal bone 200 is moved aside by a forceps for at least exposing the first metacarpal bone 200 and the trapezium 300 .
  • the carpometacarpal (CMC) joint is located between the first metacarpal bone 200 and the trapezium 300 .
  • FIG. 2A is an example of a right hand direction, but the surgical process is practically not limited thereto.
  • the joint capsule of the carpometacarpal joint is opened, and a damaged proximal end articular surface of the first metacarpal bone 200 near the carpometacarpal joint is cut and removed to form an incision 201 .
  • the proximal end articular surface of the trapezium 300 can be also removed at the same time to form another incision 301 .
  • FIG. 2B also illustrates the other adjacent bones, such as the second metacarpal bone 400 , the trapezoid 500 and the navicular bone 600 , so as to facilitate a clear understanding of the relative position of the bones.
  • the artificial implant 100 for the carpometacarpal joint is inserted into the bone marrow cavity 202 of the partially cut first metacarpal bone 200 through the incision 201 thereof in manner of the articular replacement portion 120 facing outward and the insert portion 110 facing inward.
  • the surgical process can be relatively simple. If necessary, the incision 301 of the trapezium 300 is formed in advance, and the other artificial implant 302 also can be embedded into the incision 301 .
  • the attached flange 130 is preferably located at the radial side of the first metacarpal bone 200 . That is to say, the attached flange 130 is located at a position offsetting 0 to 45 degrees toward an outer side of a palm from the intersection point of the peripheral of the articular profile surface 121 for being corresponding to the location of the abductor pollicis longus 700 of the first metacarpal bone 200 , wherein the attached flange 130 is used to allow at least one suture 800 to pass through the suture hole 131 , so that the suture hole 131 provides a structural base for securing the suture 800 .
  • the suture 800 is made of biocompatible or biodegradable material and can be a single strand type, a double strand type or a multi-strand type, but not limited thereto.
  • the abductor pollicis longus 700 attached to the outer bone surface of the first metacarpal bone 200 is returned by a forceps, and then the suture 800 passes through the abductor pollicis longus 700 and is knotted by Krackow suturing or other suturing techniques, wherein the attached flange 130 is attached and flush to the outer bone surface of the first metacarpal bone 200 adjacent to the incision 201 .
  • the abductor pollicis longus 700 is stitched on the attached flange 130 by at least two sutures 800 , it would be beneficial to allow the abductor pollicis longus 700 to be attached and flush to the outer bone surface of a front side of the first metacarpal bone 200 in a manner of surface contact, for the purpose of reattaching the tendon of a abductor pollicis longus to the outer bone surface.
  • the wound of the skin is sutured to complete the arthroplasty surgery of the carpometacarpal joint.
  • the abductor pollicis longus 700 can be sutured and fixed to the outer bone surface of the first metacarpal bone 200 and the attached flange 130 without cutting the abductor pollicis longus 700 , so as to simplify the arthroplasty surgery of the carpometacarpal joint.
  • the artificial implant for the carpometacarpal joint of the present invention is provided with the suture hole 131 formed on the attached flange 130 of the artificial implant 100 for the carpometacarpal joint, which not only can omit the step of drilling holes on the first metacarpal bone but also can easily fix the surgical suture on the artificial implant without destroying the abductor pollicis longus.
  • the present invention can simplify the surgical steps and improve surgical efficiency, thereby increasing the success rate of the arthroplasty surgery of the artificial implant for the carpometacarpal joint.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Vascular Medicine (AREA)
  • Transplantation (AREA)
  • Cardiology (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Prostheses (AREA)
US14/057,737 2012-11-07 2013-10-18 Artificial implant for carpometacarpal joint Abandoned US20140128984A1 (en)

Priority Applications (1)

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US14/752,577 US9452058B2 (en) 2012-11-07 2015-06-26 Artificial implant for carpometacarpal joint

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TW101141387A TWI498111B (zh) 2012-11-07 2012-11-07 拇指腕掌關節人工植體
TW101141387 2012-11-07

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US20190083273A1 (en) * 2016-03-28 2019-03-21 Wright Medical Technology, Inc. Anterior resurfacing talar plate
US10799365B1 (en) * 2019-03-25 2020-10-13 Loci Orthopaedics Limited Bone joint implants
CN118750648A (zh) * 2024-09-09 2024-10-11 湖南碳康生物科技有限公司 一种碳纤维复合材料多孔人工掌骨及其制备方法

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CN111772885A (zh) * 2020-08-20 2020-10-16 宁波市第六医院 一种部分置换大多角骨假体及其制作方法

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US20190083273A1 (en) * 2016-03-28 2019-03-21 Wright Medical Technology, Inc. Anterior resurfacing talar plate
US11504244B2 (en) * 2016-03-28 2022-11-22 Wright Medical Technology, Inc. Anterior resurfacing talar plate
US10799365B1 (en) * 2019-03-25 2020-10-13 Loci Orthopaedics Limited Bone joint implants
CN118750648A (zh) * 2024-09-09 2024-10-11 湖南碳康生物科技有限公司 一种碳纤维复合材料多孔人工掌骨及其制备方法

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