CN112137773B - Artificial scaphoid for driving in inverted tooth type ball socket joint - Google Patents

Artificial scaphoid for driving in inverted tooth type ball socket joint Download PDF

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Publication number
CN112137773B
CN112137773B CN201910571832.1A CN201910571832A CN112137773B CN 112137773 B CN112137773 B CN 112137773B CN 201910571832 A CN201910571832 A CN 201910571832A CN 112137773 B CN112137773 B CN 112137773B
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scaphoid
ball
joint
radial
artificial
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CN112137773A (en
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张海宁
冷萍
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Beijing AK Medical Co Ltd
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Affiliated Hospital of University of Qingdao
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    • 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
    • A61F2/4261—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for wrists
    • 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
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • 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
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
    • 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
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30378—Spherically-shaped protrusion and recess
    • 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
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
    • 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
    • A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
    • A61F2002/30649—Ball-and-socket 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • 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
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30904—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves serrated profile, i.e. saw-toothed
    • 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
    • A61F2/4261—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for wrists
    • A61F2002/4264—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for wrists for radio-carpal 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
    • A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4261—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for wrists
    • A61F2002/4271—Carpal bones
    • A61F2002/4287—Proximal carpal row, i.e. bones adjacent the radius and the ulna
    • A61F2002/4289—Scaphoid or navicular bone

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

The invention provides a striking inverted tooth type ball-and-socket joint artificial scaphoid, which is an implant used for reconstructing the original scaphoid function and reserving the gap and the mobility of a radial wrist joint, and comprises a scaphoid and a support body, wherein the scaphoid is an irregular shape which is similar to the scaphoid of a human body and consists of a head part, a body part and a tail part, the support body consists of a ball head, a neck collar and a handle, a spherical socket is arranged at the position of the body part of the scaphoid, which is opposite to the ball head of the support body, and forms the ball-and-socket joint with the ball head, the handle is a striking type handle, the striking type handle is a long conical structure with an inverted tooth-shaped structure and is provided with a rough coating, the striking inverted tooth type ball-and-socket joint artificial scaphoid is implanted into the radial wrist joint by utilizing an implantation instrument, and the striking inverted tooth type ball-and-socket joint artificial scaphoid can be used for realizing the reconstruction of the wrist joint. The device has the structural characteristics of dispersing stress, keeping the gap of the radial-wrist joint, keeping better mobility of the radial-wrist joint and well reconstructing the radial-wrist joint.

Description

Artificial scaphoid for driving in inverted tooth type ball socket joint
Technical Field
The invention belongs to the technical field of repairing and reconstructing a radiocarpal joint by using an implant, and particularly relates to an artificial scaphoid of a striking-in pawl type ball-and-socket joint.
Background
Necrosis of scaphoid bone, nonunion, delayed healing and the like caused by trauma, strain or other reasons are clinically troublesome problems, and symptoms such as pain, reduced mobility of wrist joints and the like are generated. Most of the existing treatment means are tissue filling such as scaphoid excision tendon and bone grafting fusion, and the like, the effect is limited, and the problems of adjacent carpal bone degeneration, mobility reduction, narrow radial wrist joint gap and the like can be caused. At present, an endophyte and an operation mode which are suitable for reconstructing the original scaphoid function and reserving the gap and the mobility of the wrist joints are still lacking clinically.
Disclosure of Invention
The invention aims to provide an artificial scaphoid of a striking-in inverted tooth type ball socket joint, which is used in operations such as scaphoid necrosis and the like needing replacing scaphoid, can reduce the radial side pressure of a wrist joint, relieve pain symptoms, keep the mobility of the radial wrist joint such as stretching, bending and rotation, improve the operation effect and facilitate clinical application.
In order to solve the technical problems, the invention adopts the following technical scheme to realize:
the artificial scaphoid with the driving-in inverted tooth type ball-and-socket joint is an internal implant used for reconstructing the original scaphoid function and keeping the clearance and the mobility of the radial wrist joint, and comprises a scaphoid body and a support body, wherein the scaphoid body is an irregular shape which is similar to the scaphoid of a human body and consists of a head part, a body part and a tail part, the support body consists of a ball head, a neck collar and a handle, a spherical pit is formed at the position, opposite to the ball head of the support body, of the body part of the scaphoid body, the spherical pit and the ball head form the ball-and-socket joint, the handle is a driving-in type handle, the driving-in type handle is a long conical structure with an inverted tooth-shaped structure and is provided with a rough coating, and the structure is implanted into the radial wrist joint by using an implantation instrument and is used for realizing the reconstruction of the radial wrist joint.
The artificial scaphoid of the driving-in inverted tooth type ball socket joint is characterized in that the ball head is spherical with a smooth surface, and the neck collar is of a circular ring-shaped structure.
The artificial scaphoid of the driving-in inverted tooth type ball-and-socket joint is made of polyethylene or other wear-resistant materials, and the support body is made of metal or alloy.
The scaphoid body is an irregular shape which is similar to the scaphoid of a human body and consists of a head part, a body part and a tail part, a spherical socket is arranged at the position of the body part, which is opposite to the support body, and the spherical socket and the ball head of the support body form a ball-and-socket joint.
Compared with the prior art, the invention has the advantages and positive effects that:
the artificial scaphoid driven into the inverted tooth type ball-and-socket joint is convenient and simple to use, can reconstruct and restore a relatively normal radial wrist joint gap, simulates the irregular appearance of the scaphoid, and the head, the body and the tail of the artificial scaphoid can be matched with the distal joint surfaces of the trapezium, the lunate and the radius in an involutive manner, so that adjacent bone degeneration caused by friction on adjacent carpal bones is reduced. The ball-and-socket joint formed by the spherical socket of the scaphoid body part and the ball head of the support body has high freedom degree, can keep the natural rotation and flexion and extension mobility of the reconstructed wrist joint, maintain the normal clearance of the wrist joint and avoid the problems of abrasion of the artificial scaphoid body and the distal end of the radius and long-term joint clearance stenosis. The neck collar of the support body can prevent the long-term support body from sinking in the radius, and avoids the narrow gap of the wrist joint. The rough coating of the driving-in type support body can produce bone growth effect and good long-term stability. The structural characteristics of the device can disperse stress, keep better mobility and well reconstruct the wrist joint.
Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view showing the overall structure of an artificial scaphoid of a driving-in inverted tooth type ball-and-socket joint according to the present invention;
fig. 2 is a schematic structural view of the artificial scaphoid implanted into the human radial wrist joint of the driving-in pawl type ball-and-socket joint of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
Scaphoid necrosis, collapse, nonunion of fracture, etc., often lead to symptoms of pain in the wrist joint, decreased mobility, etc. At present, an internal implant which is suitable for reconstructing the original scaphoid function and reserving the gap and the mobility of the wrist joint is still lacking clinically. The invention designs the artificial scaphoid of the driving-in pawl type ball socket joint for solving the problems, can rebuild the original scaphoid function, keeps the range of motion of the radial wrist joint such as flexion and rotation, reduces the radial pressure of the wrist joint and relieves the pain symptom.
The following describes the implementation of the present invention with specific embodiments in conjunction with the accompanying drawings:
as shown in fig. 1, the present embodiment provides an artificial scaphoid of a driving-in inverted tooth type ball-and-socket joint, which is an endoprosthesis used for reconstructing the original scaphoid function and preserving the gap and mobility of the radial wrist joint, and comprises a scaphoid body 10 and a support body 20, wherein the scaphoid body 10 is made of a polyethylene wear-resistant material, and the support body 20 is made of a metal or an alloy. The corpus navicularis 10 is an irregular shape similar to the scaphoid of a human body and composed of a head 11, a body 12 and a tail 13, a spherical socket 14 is formed at the position, opposite to the support body 20, of the body 12, and a ball joint is formed by the spherical socket 14 and a ball head 21 of the support body 20. The support body 20 consists of a ball head 21, a neck collar 22 and a handle 23; the ball head 21 is in a spherical shape with a smooth surface, the neck collar 22 is in a circular structure, the handle 23 is a striking-in type handle which is in a long conical structure with an inverted tooth-shaped structure and is provided with a rough coating, and the striking-in type handle is implanted into the radial wrist joint by using an implantation instrument and is used for realizing the reconstruction of the radial wrist joint.
In the embodiment, the artificial scaphoid of the impacted pawl type ball-and-socket joint is accurately implanted into the radial wrist joint, so that the normal radial wrist joint gap can be reconstructed, the mobility of the radial wrist joint is reserved, the friction between the artificial scaphoid and the adjacent wrist bone is reduced, the narrow radial wrist joint gap is avoided, and the effect of replacing the necrotic scaphoid is achieved.
When the artificial scaphoid bone is applied, as shown in figure 2, the radial wrist joint is exposed, the necrotic or diseased scaphoid is removed, the scaphoid body 10 which is impacted into the artificial scaphoid of the inverted tooth type ball-and-socket joint is placed at the anatomical position of the original scaphoid, the ideal corresponding position is marked on the joint surface of the corresponding distal radius end, the scaphoid body is taken out, a bone tunnel is drilled at the position of the marked distal radius end by using a drill bit, and the distal radius bone is drilled into the bone with the same diameter as the neck collar and the same depth as the thickness of the neck collar so as to bite the residual bone at the neck collar part; striking the support body 20 into the bone tunnel until the neck portion is submerged in the previously fabricated neck void; the flexion and extension of the joint of the radius wrist are expanded, the scaphoid body is placed in the original scaphoid dissection position, the ball head of the support body is placed in the spherical pit of the scaphoid body, the joint of the radius wrist is reset, and the implantation of the artificial scaphoid of the impacted pawl type ball-and-socket joint is completed.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (2)

1. The artificial scaphoid with the driving-in inverted tooth type ball-and-socket joint is an implant used for reconstructing the original scaphoid function and keeping the gap and the mobility of the radial-and-wrist joint, and comprises a scaphoid body and a support body, wherein the scaphoid body is an irregular shape which is similar to the scaphoid of a human body and consists of a head part, a body part and a tail part, the support body consists of a ball head, a neck collar and a handle, a spherical socket is formed at the position, opposite to the ball head of the support body, of the body part of the scaphoid body, the spherical socket and the ball head form the ball-and-socket joint, the handle is a driving-in type handle, the driving-in type handle is a long conical structure with an inverted tooth-shaped structure and is provided with a rough coating, and the structure is implanted into the radial-and-wrist joint by using an implantation instrument and is used for realizing the reconstruction of the radial-and-wrist joint; the bulb is the smooth sphere in surface shape, the neck is the ring form structure.
2. The driving-in inverted-tooth ball-and-socket joint artificial scaphoid as claimed in claim 1, wherein: the scaphoid is made of polyethylene, and the support body is made of alloy.
CN201910571832.1A 2019-06-28 2019-06-28 Artificial scaphoid for driving in inverted tooth type ball socket joint Active CN112137773B (en)

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CN1416330A (en) * 2000-01-30 2003-05-07 岱密克龙有限公司 Component for prosthetic joint having diamond load bearing and articulation surface
CN101708139A (en) * 2009-05-31 2010-05-19 天津市威曼生物材料有限公司 Ball-and-socket type wrist joint prosthesis device
CN103445888A (en) * 2013-09-11 2013-12-18 徐永清 Externally clamping fixed high-functionality artificial wrist joint prosthesis device
CN104605963A (en) * 2015-02-10 2015-05-13 北京市春立正达医疗器械股份有限公司 Wrist joint prosthesis
WO2015150347A1 (en) * 2014-03-31 2015-10-08 Universiteit Gent Endoprosthesis
CN105434086A (en) * 2016-02-01 2016-03-30 中南大学湘雅医院 Wrist joint implant

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EP0034192A1 (en) * 1980-02-14 1981-08-26 Howmedica International, Inc. A wrist prosthesis
US8152854B2 (en) * 2009-09-30 2012-04-10 Imbriglia Joseph E Resurfacing implant for the wrist and method of implantation thereof

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