US20180333262A1 - Implant device for promoting bone growth - Google Patents

Implant device for promoting bone growth Download PDF

Info

Publication number
US20180333262A1
US20180333262A1 US15/779,437 US201615779437A US2018333262A1 US 20180333262 A1 US20180333262 A1 US 20180333262A1 US 201615779437 A US201615779437 A US 201615779437A US 2018333262 A1 US2018333262 A1 US 2018333262A1
Authority
US
United States
Prior art keywords
implant
elongation
rod
bar
stimulation
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.)
Abandoned
Application number
US15/779,437
Other languages
English (en)
Inventor
Yong Won KWON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ikey Co Ltd
Original Assignee
Ikey Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ikey Co Ltd filed Critical Ikey Co Ltd
Assigned to IKEY CO., LTD reassignment IKEY CO., LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KWON, YONG WON
Publication of US20180333262A1 publication Critical patent/US20180333262A1/en
Abandoned legal-status Critical Current

Links

Images

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
    • A61F2/28—Bones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B2017/681—Alignment, compression, or distraction mechanisms
    • 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
    • A61F2/30721—Accessories
    • A61F2/30749—Fixation appliances for connecting prostheses to the body
    • 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
    • A61F2002/30092—Properties of materials and coating materials using shape memory or superelastic materials, e.g. nitinol
    • A61F2002/30095—
    • 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
    • A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
    • A61F2002/3055—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting length
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2002/3093—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth for promoting ingrowth of bone tissue

Definitions

  • the present disclosure relates to an implant device for promoting bone growth, and more particularly, to an implant device for promoting bone growth, which is configured to promote bone growth without damage of a growth plate, thereby improving the safety of a procedure.
  • a long bone such as a femur, a tibia, a humerus, and the like, includes a diaphysis forming a central portion of the long bone, a metaphysis provided at both end portions of the diaphysis, and an epiphysis provided outside the metaphysis. Also, a growth plate is located between the metaphysis and the epiphysis. In this case, a medullary cavity, which is filled with bone marrow, is present inside the diaphysis, and a bone may be grown by the growth plate.
  • a length growth of the growth plate of the long bone is inhibited when the growth plate of the long bone receives compressive force inward from the epiphysis toward the metaphysis, while the length growth of the growth plate of the long bone is promoted when the growth plate of the long bone receives tensile stress outward from the metaphysis toward the epiphysis.
  • the device according to the related art configured to promote bone growth is installed outside the human body and configured to apply tensile stress. Since skin tissues are subject to pressure together during the stimulation of the growth plate, excessive force applied to the skin tissues, thereby causing a wearer to suffer pain. In addition, there has been a problem that the wearer cannot live everyday life due to a device exposed outside.
  • an implant device for promoting bone growth which is configured to promote bone growth without damage of a growth plate, thereby improving the safety of a procedure.
  • the present disclosure provides an implant device for promoting bone growth, the implant device including: a first implant bar implanted to penetrate a metaphysis corresponding to the inside of a growth plate of a long bone to be treated; a second implant bar implanted to penetrate an epiphysis of the outside of the growth plate; and a stimulation elongation unit located close to an external surface of the long bone to be treated and installed in skin tissues surrounding the long bone to be treated, wherein the stimulation elongation unit is elongated between end portions of the respective implant bars to increase a distance between the first implant bar and the second implant bar so that the growth plate may be extended.
  • an implant device for promoting bone growth provides the following effects.
  • implant bars implanted to penetrate both sides of a growth plate of a long bone stimulate the growth plate with the elongation of a stimulation elongation unit, and each component may be mounted in a compact structure in skin tissues.
  • a wearer can live everyday life with the implant device worn, so that a convenience of using a product can be improved.
  • the stimulation elongation unit is connected to both exposed ends of each of a first implant bar and a second implant bar that are implanted to penetrate inner and outer sides of the growth plate to thereby elongate the both exposed ends of each of the first and second implant bars.
  • the elongation of a central portion and an outer portion of the growth plate portion can be uniformly promoted at the same time.
  • a variation of an elongation rod portion located in a direction in which the long bone is curved is set to be larger than a variation of an elongation rod portion located on another side so that rotational deformation may be induced. Accordingly, a more active growth promotion effect may be given to the growth plate corresponding to the direction in which the long bone is curved than to the growth plate corresponding to a direction opposite to the direction in which the long bone is curved. Thus, the curved long bone may be corrected.
  • the stimulation elongation unit compactly includes a single arc-shaped member including a shape memory alloy material of which a curvature is reduced by body temperature, a sensation of foreign materials can be minimized in skin tissues. Also, the stimulation elongation unit is elastically deformed into a round shape and pressure is dispersed slantwise in an arc direction during the shape deformation. Thus, by giving stable stimulation, damage of the growth plate can be prevented to improve safety of a product.
  • FIG. 1 is a front view of an implant device for promoting bone growth according to a first embodiment of the present disclosure.
  • FIG. 2 is a side view of the implant device for promoting bone growth according to the first embodiment of the present disclosure.
  • FIG. 3 is a diagram of an example of a stimulation elongation unit of the implant device for promoting bone growth according to the first embodiment of the present disclosure.
  • FIG. 4 is a front view of an implant device for promoting bone growth according to a second embodiment of the present disclosure.
  • FIG. 5 is a cross-sectional view of a stimulation elongation unit of the implant device for promoting bone growth according to the second embodiment of the present disclosure.
  • FIG. 1 is a front view of an implant device for promoting bone growth according to a first embodiment of the present disclosure.
  • FIG. 2 is a side view of the implant device for promoting bone growth according to the first embodiment of the present disclosure.
  • FIG. 3 is a diagram of an example of a stimulation elongation unit of the implant device for promoting bone growth according to the first embodiment of the present disclosure.
  • an implant device 100 for promoting bone growth includes a first implant bar 10 , a second implant bar 20 , and a stimulation elongation unit 30 .
  • the implant device 100 for promoting bone growth refers to a device configured to promote the growth of a length of a bone by applying tensile stress to a peripheral portion of a growth plate 5 so that the growth plate 5 may be pulled up and down.
  • the first implant bar 10 is implanted to penetrate a metaphysis 3 corresponding to the inside of the growth plate 5 of a long bone 1 to be treated
  • the second implant bar 20 is located parallel to the first implant bar 10 and implanted to penetrate an epiphysis 4 of the outside of the growth plate 5 .
  • the long bone 1 to be treated refers to a portion of a long bone (e.g., a femur, tibia, a humerus, and the like) for which a procedure for growth promotion is planned.
  • the long bone 1 to be treated may be set by a judgement of a practitioner or a request of a person to be treated.
  • the long bone 1 includes a diaphysis 2 , the metaphysis 3 , the growth plate 5 , the epiphysis 4 , an articular cartilage 7 , and the like, and the first implant bar 10 and the second implant bar 20 are preferably implanted in the metaphysis 3 and the epiphysis 4 , respectively, which are located on both sides of the growth plate 5 .
  • directions in which the first implant bar 10 and the second implant bar 20 are located are set to correspond to a target growth direction of the long bone 1 .
  • the first implant bar 10 and the second implant bar 20 are implanted parallel to each other in a direction perpendicular to the target growth direction of the long bone 1 .
  • uniform tensile stress may be applied to each portion of the growth plate 5 .
  • first implant bar 10 and the second implant bar 20 preferably include a titanium-based alloy or a Teflon-based synthetic resin, which does not cause a rejection reaction to the human body.
  • skin tissues 6 corresponding to the long bone 1 are incised to expose the metaphysis 3 and the epiphysis 4 , and a treatment hole is formed in the metaphysis 3 and the epiphysis 4 using a drill device.
  • first implant bar 10 and the second implant bar 20 are implanted in the metaphysis 3 or the epiphysis 4 through the formed treatment hole.
  • first implant bar 10 and the second implant bar 20 are provided to have lengths greater than lateral thicknesses of implanted portions, so that both end portions of the first implant bar 10 and the second implant bar 20 are exposed to both side portions of the long bone 1 .
  • first implant bar 10 and the second implant bar 20 may be provided to have the same length or provided to have respectively different lengths.
  • the stimulation elongation unit 30 is coupled to the both exposed end portions of each of the implant bars 10 and 20 .
  • Each of the implant bars 10 and 20 is applied with pressure due to the elongation of the stimulation elongation unit 30 so that the implant bars 10 and 20 may be spaced apart from each other.
  • tensile stress capable of promoting length growth of the long bone 1 may be applied to the growth plate 5 .
  • first implant bar 10 and the second implant bar 20 may have a hexagonal pillar shape or a cylindrical shape, so that warpage of the first implant bar 10 and the second implant bar 20 may be prevented when pressure is applied by the stimulation elongation unit 30 . Also, pressure applied to each of the implant bars 10 and 20 may be dispersed into the treatment hole so that damage of the treatment hole and the epiphysis/metaphysis may be prevented.
  • the stimulation elongation unit 30 is located close to an external surface of the long bone 1 to be treated, and installed in the skin tissues 6 surrounding the long bone 1 to be treated. Also, the stimulation elongation unit 30 is elongated between the end portions of each of the implant bars 10 and 20 to increase a distance between the implant bars 10 and 20 so that the growth plate 5 may be extended.
  • a pair of stimulation elongation units 30 are more preferably provided between one end portions of the implant bars 10 and 20 and between another end portions of the implant bars 10 and 20 , respectively.
  • the respective stimulation elongation units 30 may be formed to be elongated by the same length or formed to be elongated by different lengths.
  • the stimulation elongation unit 30 preferably includes a first elongation rod portion 30 a located between one end portion of the first implant bar 10 and one end portion of the second implant bar 20 , which are exposed to one side portion of the long bone 1 . Also, the stimulation elongation unit 30 preferably includes a second elongation rod portion 30 b located between another end portion of the first implant bar 10 and another end portion of the second implant bar 20 , which are exposed to another side portion of the long bone 1 .
  • the stimulation elongation unit 30 may be coupled to each of the implant bars 10 and 20 so that the implant bars 10 and 20 may be connected to each other along a surface of the long bone 1 . Also, after the stimulation elongation unit 30 is coupled to each of the implant bars 10 and 20 , the incised skin tissues 6 are sutured to expose the long bone 1 , and the implant device 100 for promoting bone growth may be installed between the long bone 1 and the skin tissues 6 .
  • the growth plate 5 may be stimulated by the respective implant bars 10 and 20 that are implanted to penetrate both sides of the growth plate 5 of the long bone 1 .
  • each of components such as each of the implant bars 10 and 20 , the stimulation elongation unit 30 , and the like, may be mounted in a compact structure in the skin tissues.
  • the device after the device is installed in the long bone 1 to be treated, only if the skin tissues 6 are healed, a wearer may live everyday life with the device worn, so that a convenience of using a product may be improved.
  • the stimulation elongation unit 30 is elongated to increase a distance between the implant bars 10 and 20 so that the growth plate 5 may be extended.
  • the growth plate 5 consists of a population of chondrocytes.
  • the growth plate 5 may continuously generate new bone marrow through processes, such as proliferation of chondrocytes, hypertrophy, secretion of extracellular matrices, invasion of blood vessels and osteoprogenitor cells, ossification, and the like
  • the growth plate 5 when the growth plate 5 is extended, the growth plate 5 is pulled in a direction in which a space between the metaphysis 3 and the epiphysis 4 widens. Furthermore, with an increase in distance between the metaphysis 3 and the epiphysis 4 , a process of growing the length of the long bone 1 using the growth plate 5 may be promoted.
  • tensile stress applied to each of the implant bars 10 and 20 by the stimulation elongation unit 30 is preferably set to a pressure equal to or less than a pressure under which the chondrocytes may be broken.
  • the stimulation elongation unit 30 includes a pair of elongation rod portions 30 a and 30 b so that both end portions of each of the implant bars 10 and 20 may be applied with pressure at the same time. Therefore, uniform stimulation may be applied to each portion of the growth plate 5 . As a result, abnormal growth of the long bone 1 due to non-uniform stimulation may be prevented, and the long bone 1 may be accurately grown to correspond to a planned growth direction.
  • the stimulation elongation unit 30 may be elongated to increase a distance between the implant bars 10 and 20 installed on both sides of the growth plate 5 .
  • tensile stress pulling outward may be applied to the growth plate 5 , and the growth of a length of the long bone 1 may be promoted.
  • components e.g., the implant bars 10 and 20 , and the stimulation elongation unit 30 , and the like
  • smooth stimulation may be given to the growth plate 5 without damage of the skin tissues 6 , thereby improving growth promotion performance of a product.
  • both end portions of the stimulation elongation unit 30 that is, both end portions of each of the elongation rod portions 30 a and 30 b are coupled to the end portions of the first implant bar 10 and the second implant bar 20 .
  • an upper end portion of the first elongation rod portion 30 a is preferably coupled to one end portion of the first implant bar 10
  • a lower end portion of the first elongation rod portion 30 a is preferably coupled to one end portion of the second implant bar 20
  • an upper end portion of the second elongation rod portion 30 b is preferably coupled to the first implant bar 10
  • a lower end portion of the second elongation rod portion 30 b is coupled to another end portion of the second implant bar 20 .
  • each of the elongation rod portions 30 a and 30 b preferably includes a round bar shape including an elastic shape memory alloy material, which is transformed to reduce a curvature of each of the elongation rod portions 30 a and 30 b at a predetermined first temperature or higher.
  • each of the elongation rod portions 30 a and 30 b includes an arc-shaped round bar and includes a shape memory alloy, which has a large curvature below the predetermined first temperature and has a reduced curvature at the predetermined first temperature or higher.
  • the shape memory alloy refers to an alloy having a property of returning to a defined shape at a predetermined constant temperature.
  • the shape memory alloy may include various kinds of alloys, such as a nickel (Ni)/titanium (Ti) alloy, a copper/zinc alloy, a gold/copper/zinc alloy, and the like.
  • the shape memory ally preferably includes a nitinol (Ni—Ti) alloy, which minimizes a negative reaction of the human body.
  • each of the elongation rod portions 30 a and 30 b may include a 1-way shape memory alloy so that an alloy configured to memorize an arbitrary shape is put into a Martensite phase by a cooling process to change a shape, and returns to the memorized shape by a heating process.
  • each of the elongation rod portions 30 a and 30 b may include a two-way shape memory alloy configured to memorize both an Austenite-phase shape and a Martensite-phase shape so that a shape of each of the elongation rod portions 30 a and 30 b may be shifted by heating and cooling processes.
  • a shape into which each of the elongation rod portions 30 a and 30 b is to be deformed may be set to a bar shape that is close to a straight line having a small curvature, and the first temperature may be set at about 36.5° C., which is a normal body temperature.
  • each of the elongation rod portions 30 a and 30 b is deformed into a bar shape, which is close to a circular shape having a large curvature, below the first temperature and then installed in the body.
  • Each of the elongation rod portions 30 a and 30 b is heated to the first temperature or higher by body temperature and gradually transformed to correspond to a memorized shape, and has a reduced curvature.
  • each of the elongation rod portions 30 a and 30 b may include a two-way shape memory alloy.
  • Each of the elongation rod portions 30 a and 30 b may store a bar shape close to a circular shape having a large curvature below the first temperature, and store a bar shape close to a straight line having a small curvature at the first temperature or higher.
  • each of the elongation rod portions 30 a and 30 b is installed in the body in a cooled state, each of the elongation rod portions 30 a and 30 b is heated to reduce a curvature of each of the elongation rod portions 30 a and 30 b.
  • a distance between the first implant bar 10 and the second implant bar 20 may increase.
  • the elongation rod portions 30 a and 30 b connect the end portions of each of the implant bars 10 and 20 and are slantwise formed forward or backward so that the elongation rod portions 30 a and 30 b may be closely adhered to the surface of the long bone 1 .
  • each of the elongation rod portions 30 a and 30 b may be coupled to the end portions of the first implant bar 10 and the second implant bar ( 20 ) in an inclined direction.
  • a pressure due to shape deformation of the elongation rod portions 30 a and 30 b may not be directly applied in a direction in which the implant bars 10 and 20 are spaced apart from each other but be dispersed slantwise in the arc directions.
  • the arc-shaped elongation rod portions 30 a and 30 b may be elastically deformed due to round shapes thereof. Therefore, the arc-shaped elongation rod portions 30 a and 30 b may absorb compressive force applied to each of the implant bars 10 and 20 and stably stimulate the implant bars 10 and 20 .
  • the stimulation elongation unit 30 is provided in a round shape and deformed elastically. Pressure generated during the deformation of the stimulation elongation unit 30 is dispersed slantwise in an arc direction and applied to each of the implant bars 10 and 20 .
  • stimulation may be stably given without damage of the growth plate 5 or the long bone 1 , which may be caused due to an excessive pressure load, and thus the safety of a product may be enhanced.
  • the elongation rod portions 30 a and 30 b include a single arc-shaped member, which is formed of a shape memory alloy to increase a distance between the implant bars 10 and 20 so that a curvature of the single arc-shaped member may be reduced by body temperature.
  • a simplified structure facilitates miniaturization of the device, a sensation of foreign materials may be minimized in the skin tissues 6 .
  • each of the elongation rod portions 30 a and 30 b includes a pair of elongation rod portions, which are located in arc shapes to be symmetric to each other.
  • Ring binding portions 31 b are preferably hinge-coupled to both end portions of each of the elongation rod portions 30 a and 30 b and surround narrow tubular portions 11 a formed at the end portions of the implant bars 10 and 20 .
  • the first elongation rod portion 30 a includes one elongation rod portion 31 formed slantwise backward and another elongation rod portion 32 formed slantwise forward.
  • the second elongation rod portion 30 b also includes a pair of elongation rod portions 33 and 34 formed slantwise forward and backward, respectively.
  • a force generated by the first elongation rod portion 31 formed slantwise backward and a force generated by the first elongation rod portion 32 formed slantwise forward are generated in opposite inclined directions.
  • the forces generated in forward and backward directions which are conflicting directions, counterbalance each other and are removed, and only a force generated in a vertical direction corresponding to a direction in which the implant bars 10 and 20 are located remains.
  • directions of forces generated by the first elongation rod portion 31 and 32 and the second elongation rod portion 33 and 34 may be uniformized, so that distortion and deformation due to forward/backward differences in forces applied to both end portions of the implant bars 10 and 20 may be prevented. Furthermore, force may be applied to the both end portions of the implant bars 10 and 20 in a uniform thickness so that the growth plate 5 may be stably stimulated.
  • each of the elongation rod portions 30 a and 30 b is preferably coupled to the end portions of each of the implant bars 10 and 20 through the ring binding portions 31 b formed at both end portions of each of the elongation rod portions 30 a and 30 b.
  • each of the implant bars 10 and 20 preferably includes a base bar 11 including narrow tubular portions 11 a provided at both end portions thereof and fastening portions 12 coupled to end portions of the narrow tubular portions 11 a.
  • binding holes 31 c are formed inside the ring binding portions 31 b.
  • the fastening portions 12 may be coupled to the end portions of the narrow tubular portions 11 a so that the elongation rod portions 30 a and 30 b may be hinge-coupled to the implant bars 10 and 20 .
  • variations in respective curvatures of the first elongation rod portion 30 a and the second elongation rod portion 30 b, which are reduced at the first temperature or higher, are preferably set to be different from each other to correspond to a direction in which the long bone is curved.
  • one of the first variation and the second variation may be set to be greater than the other thereof.
  • a variation is set to be great, it is preferably understood that a variation in distance between the end portions is great at the first temperature or higher.
  • the variation in the curvature of each of the elongation rod portions ( 30 a and 30 b ) is preferably set to correspond to the direction in which the long bone is curved. That is, when the long bone 1 is curved toward one end portion of each of the implant bars 10 and 20 , the first variation of the first elongation rod portion 30 a may be set to be larger than the second variation. Also, when the long bone is curved toward another end portion of each of the implant bars 10 and 20 , the second variation of the second elongation rod portion 30 b may be set to be higher than the first variation.
  • the curved long bone may be corrected.
  • each of the elongation rod portions 30 a and 30 b are preferably hinge-coupled to the end portions of each of the elongation rod portions 30 a and 30 b so that the end portions of each of the elongation rod portions 30 a and 30 b may rotate in a lateral direction.
  • FIG. 4 is a front view of an implant device for promoting bone growth according to a second embodiment of the present disclosure.
  • FIG. 5 is a cross-sectional view of a stimulation elongation unit of the implant device for promoting bone growth according to the second embodiment of the present disclosure.
  • basic components except for a stimulation elongation unit 230 are the same as in the above-described first embodiment, detailed descriptions of the same components will be omitted.
  • the stimulation elongation unit 230 preferably includes an inner rod 232 , an outer rod 231 , and an elastic member 233 .
  • the inner rod 232 is coupled to an end portion of a first implant bar 210
  • the outer rod 231 is coupled to an end portion of a second implant bar 220
  • the outer rod 231 may be provided as a hollow type, and the inner rod 232 may be inserted into the outer rod 231 .
  • the elastic member 233 elastically supports between the outer rod 231 and the inner rod 232 so that the inner rod 232 may be withdrawn from the outer rod 231 .
  • the stimulation elongation unit 230 may be elongated due to elastic force of the elastic member 233 , and stimulation for promoting growth may be given to the growth plate 5 .
  • a serrated protrusion 232 c having an inclined upper portion may protrude from an outer circumference of the inner rod 232 , while a serrated groove 231 c having an inclined upper portion may be formed at an inner circumference of the outer rod 231 to correspond to the serrated protrusion 232 c.
  • the inner rod 232 may be slidably withdrawn from a lower portion of the outer rod 231 toward an upper portion thereof in an inclined direction of the serrated protrusion 232 c.
  • a distance between the implant bars 210 and 220 may increase.
  • a sliding direction of the inner rod 232 is limited to one direction, so that a reduction of the distance between the implant bars 210 and 220 due to external force may be prevented.
  • the increased distance between the metaphysis 3 and the epiphysis 4 may be stably maintained, and compressive force for inhibiting growth may be prevented from being applied to the growth plate 5 .
  • an upper hinge portion 232 a is formed at an upper end portion of the inner rod 232 and hinge-coupled to a narrow tubular portion 211 a formed at the end portion of the first implant bar 210 so that the inner rod 232 may be coupled to the end portion of the first implant bar 210 .
  • the first implant bar 210 includes a base bar 211 having the narrow tubular portions 211 a provided at both end portions thereof, and fastening portions 212 coupled to end portions of the narrow tubular portions 211 a. Also, the fastening portions 212 are coupled to the end portions of the narrow tubular portions 211 a that have penetrated binding holes 232 b of the upper hinge portion 232 a, so that the inner rod 232 may be hinge-coupled to the end portion of the first implant bar 210 .
  • a lower hinge portion 231 a is formed at a lower end portion of the outer rod 231 and hinge-coupled to a narrow tubular portion formed at the end portion of the second implant bar 220 so that the outer rod 231 may be coupled to the end portion of the second implant bar 220 .
  • the lower hinge portion 231 a may be coupled to the narrow tubular portion of the second implant bar 220 through a binding hole 231 b formed in the lower hinge portion 231 a .
  • the outer rod 231 may be provided as a hollow type, and the inner rod 232 may be inserted into the outer rod 231 .
  • the outer rod 231 has a lower opening, and the inner rod 232 may be inserted into the outer rod 231 through the lower opening of the outer rod 231 and withdrawn from an upper portion of the outer rod 231 .
  • the lower hinge portion 231 a is detachably attached to the outer rod 231 .
  • a serrated protrusion having the same shape as that of the inner rod 232 may be formed on the lower hinge portion 231 a and fastened to the lower opening of the outer rod 231 .
  • a communication hole is preferably formed in the lower hinge portion 231 a so that an inner pressure of a hollow of the outer rod 231 may not be reduced when the inner rod 232 is withdrawn.
  • outer rod 231 and the inner rod 232 preferably include an alloy or a synthetic resin material, which has predetermined elastic force without causing a negative reaction to the human body.
  • the serrated protrusion 232 c and the serrated groove 231 c are formed in multiple stages along a lengthwise direction of each of the outer rod 231 and the inner rod 232 .
  • the elastic member 233 includes a coil spring including a shape memory alloy material, which is elongated at a predetermined first temperature or higher and contracted at a predetermined second temperature or lower, and is mounted on an outer circumference of the inner rod 232 .
  • the elastic member 233 preferably includes a two-way shape memory alloy configured to memorize both an Austenite-phase shape and a Martensite-phase shape so that a shape of the two-way shape memory alloy may be shifted by heating and cooling processes.
  • the first temperature is preferably set to about 36.5° C., which is similar to body temperature
  • the second temperature is preferably set to a temperature lower than the first temperature, which is not naturally generated in the body.
  • a length difference of the elastic member 233 may be set to a minute value corresponding to a height of one or two serrated protrusions 232 c.
  • the elastic member 233 is mounted such that a lower end portion of the elastic member 233 is seated on an upper end of the outer rod 231 , while an upper end portion of the elastic member 233 is engaged with the lower portion of the serrated protrusion 232 c of the inner rod 232 .
  • the elastic member 233 is installed while being cooled and contracted, and heated by body temperature and elongated. Also, in a state in which the elongated lower end portion of the elastic member 233 is seated on the upper end of the outer rod 231 , a flat engaging surface formed in the lower portion of the serrated protrusion ( 232 c ) is applied with pressure upward by the upper end portion of the elastic member 233 . Accordingly, the inner rod 232 may be withdrawn from the outer rod 231 .
  • the stimulation elongation unit 230 may be elongated, and a distance between the implant bars 210 and 220 may be increased.
  • the implant bars 210 and 220 are spaced apart from each other by a distance corresponding to a height of one serrated protrusion 232 c during the elongation of the elastic member 233 so as not to apply excessive stimulation to the growth plate 5 .
  • the growth plate 5 may be safely stimulated.
  • the elastic member 233 is cooled by applying a cold pack or the like on skin tissues.
  • the upper end portion of the elastic member 233 may slide down and contracted along an inclined surface of an upper portion of the serrated protrusion 232 c.
  • the contracted elastic member 233 may be reheated by body temperature at the time of the removal of a cold pack or the like and elongated in the same process between the lower engaging surface of the serrated protrusion 232 c and the upper end of the outer rod 231 .
  • the stimulation elongation unit 230 may be continuously elongated such that a certain amount of stimulation may be repetitively applied to the growth plate 5 .
  • the implant device 100 for promoting bone growth is installed once, the long-growth promoting implant device 100 may be used over a long period of time until the growth of the long bone 1 is completed in a wide range corresponding to an overlapping length between the inner rod 232 and the outer rod 231 .
  • efficiency of a product may be improved.
  • stimulation elongation units 230 may be respectively located between one end portions of the implant bars 210 and 220 and between another end portions of the implant bars 210 and 220 .
  • the respective stimulation elongation units 230 may include elastic members having different variations.
  • one stimulation elongation unit and another stimulation elongation unit may be set to have different elongated lengths.
  • a variation of each of the elastic members may be set to correspond to a direction in which the long bone is curved.
  • a variation of the elastic member located on a curved side of the long bone may be set to be larger than variations of elastic members located on other sides so that the curved long bone may be corrected.
  • end portions of each of the stimulation elongation units is preferably hinge-coupled to end portions of each of the implant bars so that the end portions of each of the stimulation elongation units may rotate in a lateral direction.
  • the present disclosure provides an implant device for promoting bone growth and can be applied to the industry of implant devices for promoting bone growth.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Vascular Medicine (AREA)
  • Neurology (AREA)
  • Prostheses (AREA)
  • Pain & Pain Management (AREA)
  • Rheumatology (AREA)
  • Surgical Instruments (AREA)
US15/779,437 2015-12-14 2016-10-26 Implant device for promoting bone growth Abandoned US20180333262A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2015-0177956 2015-12-14
KR1020150177956A KR101666527B1 (ko) 2015-12-14 2015-12-14 뼈 성장 촉진용 임플란트 장치
PCT/KR2016/012050 WO2017104965A1 (ko) 2015-12-14 2016-10-26 뼈 성장 촉진용 임플란트 장치

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2016/012050 A-371-Of-International WO2017104965A1 (ko) 2015-12-14 2016-10-26 뼈 성장 촉진용 임플란트 장치

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/013,133 Division US11607313B2 (en) 2015-12-14 2020-09-04 Implant device for promoting bone growth

Publications (1)

Publication Number Publication Date
US20180333262A1 true US20180333262A1 (en) 2018-11-22

Family

ID=57256837

Family Applications (2)

Application Number Title Priority Date Filing Date
US15/779,437 Abandoned US20180333262A1 (en) 2015-12-14 2016-10-26 Implant device for promoting bone growth
US17/013,133 Active US11607313B2 (en) 2015-12-14 2020-09-04 Implant device for promoting bone growth

Family Applications After (1)

Application Number Title Priority Date Filing Date
US17/013,133 Active US11607313B2 (en) 2015-12-14 2020-09-04 Implant device for promoting bone growth

Country Status (4)

Country Link
US (2) US20180333262A1 (ja)
JP (1) JP6686142B2 (ja)
KR (1) KR101666527B1 (ja)
WO (1) WO2017104965A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101666527B1 (ko) * 2015-12-14 2016-10-24 권용원 뼈 성장 촉진용 임플란트 장치
KR102066839B1 (ko) * 2018-06-08 2020-01-16 주식회사 아이키 뼈 성장 촉진을 위한 모니터링 시스템
KR102093023B1 (ko) * 2018-06-08 2020-03-24 주식회사 아이키 인체 외부에서의 조작이 가능한 식립 타입 뼈 성장 촉진 장치
KR102224244B1 (ko) * 2018-08-28 2021-03-08 주식회사 아이키 인체 외부에서의 조작이 가능한 식립 타입 뼈 성장 촉진 장치
KR102328801B1 (ko) 2019-12-18 2021-11-18 인제대학교 산학협력단 척추 교정 장치
KR102324935B1 (ko) 2019-12-18 2021-11-10 인제대학교 산학협력단 탄성 가압 타입 뼈 성장 촉진 장치
KR102538485B1 (ko) 2023-03-14 2023-05-31 주식회사 엠디온바이오 뼈 성장 촉진 장치

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5449359A (en) * 1991-09-05 1995-09-12 Groiso; Jorge A. Elastic clip for osteosynthesis
US20100036430A1 (en) * 2004-09-14 2010-02-11 Wright Medical Technology, Inc. Compression brace

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH630798A5 (fr) * 1979-01-16 1982-07-15 Jaquet Orthopedie Fixateur externe pour osteosynthese.
DE10156316A1 (de) * 2001-11-19 2003-06-05 Wittenstein Ag Distraktionsvorrichtung
US6966911B2 (en) * 2002-01-22 2005-11-22 Jorge Abel Groiso Bone staple and methods for correcting bone deficiencies by controllably suppressing and/or inducing the growth of the epiphyseal plate
JP2005065748A (ja) * 2003-08-27 2005-03-17 Kozo Nakamura クランプ具、および創外固定器
US7297146B2 (en) * 2004-01-30 2007-11-20 Warsaw Orthopedic, Inc. Orthopedic distraction implants and techniques
KR20090081173A (ko) * 2008-01-23 2009-07-28 이순혁 형상기억합금을 구비한 장골/경골 신연장치
KR101106021B1 (ko) 2008-10-15 2012-01-17 김재한 키 성장 촉진용 보조구
US9962199B2 (en) * 2008-10-31 2018-05-08 Peter Forsell Device and method for bone adjustment with anchoring function
CA2811562C (en) * 2010-09-27 2017-11-21 Apifix Ltd. Ratcheted spinal device
US20120209338A1 (en) * 2011-02-10 2012-08-16 Jorge Groiso Device for correction of bone and soft tissue disorders
KR101666527B1 (ko) * 2015-12-14 2016-10-24 권용원 뼈 성장 촉진용 임플란트 장치

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5449359A (en) * 1991-09-05 1995-09-12 Groiso; Jorge A. Elastic clip for osteosynthesis
US20100036430A1 (en) * 2004-09-14 2010-02-11 Wright Medical Technology, Inc. Compression brace

Also Published As

Publication number Publication date
US20200397585A1 (en) 2020-12-24
US11607313B2 (en) 2023-03-21
JP6686142B2 (ja) 2020-04-22
KR101666527B1 (ko) 2016-10-24
WO2017104965A1 (ko) 2017-06-22
JP2018538055A (ja) 2018-12-27

Similar Documents

Publication Publication Date Title
US11607313B2 (en) Implant device for promoting bone growth
US10610218B2 (en) Staples for generating and applying compression within a body
US9724138B2 (en) Intermedullary devices for generating and applying compression within a body
AU2014331635B2 (en) Intramedullary implant, system, and method for inserting an implant into a bone
US9532881B2 (en) Memory material implant system and methods of use
US9498266B2 (en) Intramedullary implant, system, and method for inserting an implant into a bone
JP6964599B2 (ja) 関節固定装置
US20150230843A1 (en) Controlling the unloading stress of nitinol devices and/or other shape memory material devices
EP1804698B1 (en) Intramedullary nail device for repairing long bone
US20070016303A1 (en) Implant for spinal stabilization and its method of use
US20080051792A1 (en) Device for Fastening Post-Craniotomy Bone Flaps
US10695189B2 (en) Interspinous omnidirectional dynamic stabilization device
US20140156017A1 (en) Flex anchor for attaching a prosthesis to bone
KR101066324B1 (ko) 척추 극돌기 간격 유지장치
AU2015229098B2 (en) System for stimulating bone growth, tissue healing and/or pain control, and method of use
KR101515724B1 (ko) 척추질환 치료용 임플란트
KR102093023B1 (ko) 인체 외부에서의 조작이 가능한 식립 타입 뼈 성장 촉진 장치
US11986572B2 (en) Device for the non-invasive induction of dynamic deformation of body tissue to differentiate tissue cells
KR101822356B1 (ko) 골반의 전방 및 후방 지주 골절의 동시 고정을 위한 해부학적 금속판
CN202288441U (zh) 一种椎管成形及侧块螺钉一体式固定系统
KR102224244B1 (ko) 인체 외부에서의 조작이 가능한 식립 타입 뼈 성장 촉진 장치
Nikita Stimulator Paradigm: Artificial Retina
Yudoyono et al. Cervical spondylotic myelopathy release by unilateral open-door laminoplasty with miniplate alone: Three years follow-up
UA108579C2 (en) Endoprosthesis of the "las" spine segments

Legal Events

Date Code Title Description
AS Assignment

Owner name: IKEY CO., LTD, KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KWON, YONG WON;REEL/FRAME:045906/0182

Effective date: 20180521

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION