CN111249039B - Expandable bone forming device - Google Patents

Expandable bone forming device Download PDF

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Publication number
CN111249039B
CN111249039B CN202010053491.1A CN202010053491A CN111249039B CN 111249039 B CN111249039 B CN 111249039B CN 202010053491 A CN202010053491 A CN 202010053491A CN 111249039 B CN111249039 B CN 111249039B
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Prior art keywords
bone
opening
base body
distraction
damaged
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CN202010053491.1A
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CN111249039A (en
Inventor
李严
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Hebei Ruihe Medical Devices Co ltd
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Hebei Ruihe Medical Devices Co ltd
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Publication of CN111249039A publication Critical patent/CN111249039A/en
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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
    • A61F2/28—Bones
    • 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
    • A61F2002/2835—Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
    • 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
    • A61F2002/30471—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
    • 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

Abstract

The invention provides an expandable bone forming device, which belongs to the technical field of medical instruments and comprises a base body, a first expansion valve component, a second expansion valve component and an adjusting component. Wherein the matrix is placed between the damaged bones of the patient. The first distraction flap assembly includes two oppositely disposed first distraction flaps. The second distraction flap assembly includes two oppositely disposed second distraction flaps. And the adjusting assembly is arranged on the base body and used for adjusting the two first opening petals and the two second opening petals to be turned on or turned off. The first distraction flap assembly is used for propping up the damaged part of the patient's skeleton through the opening of the two first distraction flaps, and the second distraction flap assembly is used for propping up the damaged part of the patient's skeleton further through the opening of the two second distraction flaps. The expandable bone forming device provided by the invention can ensure that the damaged part of the bone is perfectly supported and stably fixed, and the support structure can also facilitate the regeneration and fusion of the damaged part of the bone.

Description

Expandable bone forming device
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an expandable bone forming device.
Background
Bones are the hard organs that make up the internal bones of skeletal animals, primarily used to move, support and protect the body. The skeleton is composed of various shapes and has complex internal and external structures, so that the skeleton can keep hard while reducing the weight. The bone may be damaged and the damaged portion may be lost due to tumor, fracture, infection, accident, and the like. In treating these patients, a bone fusion device is generally implanted in a bone defect to expand and reposition the damaged and collapsed portion of the bone, thereby restoring the bone to its original shape.
In the prior art, after the damaged part of the skeleton is expanded, the expansion height of the bone fusion device is different, and when the expansion height is larger, the fusion device cannot keep the position of the damaged part of the skeleton fixed in a short period. During the period of bone restoration, the regenerated bone cannot be fused with the bone fusion device, resulting in poor bone restoration.
Disclosure of Invention
The invention aims to provide a distraction type bone forming device, and aims to solve the problems that the existing fusion cage for distraction of bones cannot ensure that the position of the damaged part of the bones is fixed, and the fusion cage cannot be fused with the bone after the bones are regenerated, so that the fusion effect is poor.
In order to achieve the purpose, the invention adopts the technical scheme that: there is provided an expandable bone shaping device comprising:
a substrate for placement in a patient in the absence of damaged bone;
the first opening valve component is positioned at one end of the base body and comprises at least two first opening valves, each first opening valve is hinged with one end of the base body, the first opening valves can be mutually closed to form a conical or frustum-shaped structure, and each first opening valve can be in an opening state relative to the central axis of the base body;
the second opening valve component is positioned at the other end of the base body and comprises at least two second opening valves, each second opening valve is hinged with the other end of the base body, the second opening valves can be mutually closed to form a conical or frustum-shaped structure, and each second opening valve can be in an opening state relative to the central axis of the base body; and
the adjusting assembly is arranged on the base body and used for adjusting the first opening petals and the second opening petals to be opened or closed in a turning manner;
the first opening valve component is used for supporting the part of the patient with the damaged and collapsed bone through the opening of each first opening valve, and the second opening valve component is used for further supporting the part of the patient with the damaged and collapsed bone through the opening of each second opening valve.
As another embodiment of this application, adjusting part includes adjusting screw, adjusting screw along the axis direction of base member set up in the inside of base member, and both ends stretch out respectively two terminal surfaces of base member, adjusting screw includes spiral tooth portion, spiral tooth portion respectively with first lamella subassembly with the second struts lamella subassembly and meshes mutually for rotate and adjust two first lamella and two are propped open the lamella upset of second and open or the upset is closed.
As another embodiment of the present application, the adjustment assembly further comprises an adjustment knob connected to the adjustment screw and located outside the base for facilitating the operator to manipulate the adjustment screw to rotate within the base.
As another embodiment of the present application, each of the first distraction petals includes:
the first overturning part is used for overturning along the length direction of the base body and used for supporting the damaged part of the skeleton of the patient; and
the first hinge part is hinged to the base body and connected with the first overturning part, and comprises a first worm gear structure which is meshed with the adjusting screw rod and used for rotating along with the rotation of the adjusting screw rod and driving the first overturning part to overturn.
As another embodiment of this application, first upset portion is half cone structure, be equipped with on the first upset portion and be used for placing when the upset is closed the first recess of adjusting screw's the end that stretches out.
As another embodiment of the present application, each of the second distraction petals includes:
the second overturning part is used for overturning along the length direction of the base body and used for supporting the damaged part of the skeleton of the patient; and
the second hinge part is hinged to the base body and connected with the second overturning part, and comprises a second worm gear structure which is meshed with the adjusting screw rod and used for rotating along with the rotation of the adjusting screw rod and driving the second overturning part to overturn.
As another embodiment of this application, second upset portion is half cone structure, be equipped with on the second upset portion and be used for placing when the upset is closed half round platform shape second recess of adjust knob, the axis of second recess with adjusting screw's axis collineation setting.
As another embodiment of the present application, the adjusting screw further comprises a polished rod portion;
the two spiral tooth parts are respectively arranged at two ends of the adjusting screw rod, the rotating directions of the two spiral tooth parts are opposite and are respectively used for being meshed with the first hinge part and the second hinge part, the polished rod part is arranged between the two spiral tooth parts, and the diameter of the polished rod part is larger than that of the spiral tooth part and is used for being rotatably connected with the base body.
As another embodiment of the application, the matrix is a cylindrical structure, the outer surface of the matrix is provided with a porous bone fusion layer, and the porous bone fusion layer is used for being fused with the matrix after bone regeneration;
the outer surfaces of the first distraction valve and the second distraction valve are provided with porous bone fusion layers for bone regeneration fusion.
As another embodiment of the present application, the diameter of the bottom surface of the first turning part is equal to the diameter of the base body;
the diameter of the bottom surface of the second overturning part is equal to that of the base body.
The expandable bone forming device provided by the invention has the beneficial effects that: compared with the prior art, the distraction type bone forming device mainly comprises a base body, a first distraction flap component, a second distraction flap component and an adjusting component, and is simple in structure and convenient to use. First opening lamella subassembly is propped open the lamella by two relative settings and is constituteed, and two first opening lamellas are articulated mutually with the one end of base member, can overturn relatively along the length direction of base member on the base member to open or close. When two first open petals are in the open state, can support for the injury position of skeleton, when two first open petals are in the closed state, can be convenient for this can open bone forming device's of propping place. The second struts lamella subassembly by two relative second that set up struts the lamella and constitutes, two second strut lamella and the other end of base member are articulated mutually, can carry out relative upset along the length direction of base member on the base member equally to open or close. When two second prop open lamella and be in the open mode, can support for the injury position of skeleton, when two second prop open lamella and be in the closed condition, can be convenient for this can prop open placing of bone forming device. The adjusting part is located the base member, and the staff can open or close through two first petals and two second petals that strut of adjusting part regulation, convenient operation. The first valve subassembly that struts after opening and the second valve subassembly that struts after opening and base member form the structure that the four corners extends, are convenient for be fixed in the damage position of skeleton, and simultaneously, this kind of structure also provides a carrier for skeleton sclerotin regeneration, can fuse with the open bone forming device that can strut after the skeleton grows, guarantees the recovery effect of skeleton. According to the expandable bone forming device provided by the invention, the base body, the first expandable valve component and the second expandable valve component can be opened and closed, so that the damaged part of the bone can be perfectly expanded and stably fixed. In addition, the structure during supporting can be convenient for the regeneration fusion of the bone injury part, and the fusion effect is good, the structure is simple, and the use is convenient.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a first schematic view of the structure of an expandable bone formation device (with a first and second expansion flap assembly open) provided in accordance with an embodiment of the present invention;
FIG. 2 is a second schematic view of the expandable bone formation device configuration (with the first and second distraction flap assemblies open) provided in accordance with an embodiment of the present invention;
FIG. 3 is a third schematic view of the configuration of the distractible bone shaping device (with the first and second distracting flap assemblies closed) provided in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of a first distraction flap of the distraction bone shaping device according to an embodiment of the invention;
FIG. 5 is a schematic view of a second distraction flap of the distraction bone shaping device according to an embodiment of the invention;
FIG. 6 is a schematic view of an adjustment assembly of the distractible bone shaping device according to one embodiment of the present invention;
in the figure: 10. a substrate; 11. a porous bone fusion layer; 20. a first distraction flap assembly; 21. a first distraction flap; 211. a first turning part; 212. a first hinge portion; 213. a first groove; 30. a second distraction flap assembly; 31. a second distraction flap; 311. a second turning part; 312. a second hinge portion; 313. a second groove; 40. an adjustment assembly; 41. adjusting the screw rod; 411. a helical tooth portion; 412. a light bar section; 42. and adjusting a knob.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 6 together, the expandable bone shaping device of the present invention will now be described. The expandable bone forming device comprises a base body 10, a first expansion valve component 20, a second expansion valve component 30 and an adjusting component 40. Wherein the matrix 10 is placed in the damaged defect of the bone. First opening lamella subassembly 20 includes two relative first opening lamella 21 that set up, and two first opening lamella 21 are articulated mutually with the one end of base member 10 respectively, and two first opening lamella 21 are used for along the length direction relative upset of base member 10 on base member 10, can close each other and form and be toper or frustum shape structure, and every first opening lamella 21 can be for the axis of base member 10 is opening the state. Second struts lamella subassembly 30, including two second that set up relatively struts lamella 31, two second strut lamella 31 are articulated mutually with the other end of base member 10 respectively, and two second strut lamellas 31 are used for relatively overturning along the length direction of base member 10 on base member 10, can close each other and form and be toper or frustum shape structure, and every second strut lamella 31 can be for the axis of base member 10 to be the state of opening. And the adjusting assembly 40 is arranged on the base body 10 and is used for adjusting the two first distraction lobes 21 and the two second distraction lobes 31 to be overturned and opened or overturned and closed. The first distraction flap assembly 20 is used to support the injured portion of the patient's bone by opening the two first distraction flaps 21, and the second distraction flap assembly 30 is used to further support the injured portion of the patient's bone by opening the two second distraction flaps 31.
The invention provides a distraction type bone forming device, which has the use mode as follows: firstly, determining an optimal placement position according to the structure of the missing part of the skeleton of a patient; then, placing the expandable bone forming device with the first expansion valve component 20 and the second expansion valve component 30 in a closed state at the missing part of the bone; the two first distraction flaps 21 and the two second distraction flaps 31 are adjusted to be overturned and opened through the adjusting component 40, and the opening angle is adjusted, so that the damaged parts of the bones are firmly propped up.
Compared with the prior art, the expandable bone forming device mainly comprises a base body 10, a first expansion flap component 20, a second expansion flap component 30 and an adjusting component 40, and is simple in structure and convenient to use. The first opening flap assembly 20 is composed of two oppositely arranged first opening flaps 21, and the two first opening flaps 21 are hinged to one end of the base body 10 and can be oppositely turned on the base body 10 along the length direction of the base body 10 to be opened or closed. When two first petals 21 of strutting are in the open mode, can support for the injury position of skeleton, when two first petals 21 of strutting are in the closed mode, be toper or frustum shape, can be convenient for this strutting the placing of bone forming device. The second spreading flap assembly 30 is composed of two oppositely arranged second spreading flaps 31, and the two second spreading flaps 31 are hinged to the other end of the base body 10 and can be oppositely turned along the length direction of the base body 10 on the base body 10 to be opened or closed. When two second distraction lamellas 31 are in the open mode, can support for the injury position of skeleton, when two second distraction lamellas 31 are in the closed mode, can be convenient for this can strut placing of formula bone forming device. The adjusting assembly 40 is located on the base body 10, and the staff can adjust the two first distraction flaps 21 and the two second distraction flaps 31 to open or close through the adjusting assembly 40, so that the operation is convenient. The opened first spreading valve component 20, the opened second spreading valve component 30 and the base body 10 form a structure with four corners extending, so that the structure is convenient to fix at the damaged part of the skeleton, meanwhile, the structure also provides a carrier for skeleton bone regeneration, the skeleton can be regenerated at the periphery of the opened spreading type bone forming device and fused with the spreading type bone forming device, and the recovery effect of the skeleton is ensured.
The expandable bone forming device provided by the invention can ensure that the damaged part of the bone can be perfectly expanded and stably fixed through the arranged base body 10, the first expandable flap component 20 capable of being opened and closed and the second expandable flap component 30 capable of being opened and closed. In addition, the structure during supporting can be convenient for the regeneration fusion of the bone injury part, the fusion effect is better, the structure is simple, and the use is convenient.
Referring to fig. 1 to 6 together, the adjusting assembly 40 includes an adjusting screw 41, the adjusting screw 41 is disposed inside the base 10 along the length direction of the base 10, and a through hole for placing the adjusting screw 41 is disposed inside the base 10. Two ends of the adjusting screw 41 respectively extend out of two end faces of the base body 10, so as to be connected with the first spreading petal 21 and the second spreading petal 31. The adjusting screw 41 includes a spiral tooth portion 411, and the spiral tooth portion 411 is respectively engaged with the first expansion flap assembly 20 and the second expansion flap assembly 30, so that the two first expansion flaps 21 and the two second expansion flaps 31 can be turned on or turned off while rotation is ensured. The adjusting screw rod 41 has the advantages of being simple in structure and high in practicability.
Referring to fig. 1 to 6 together, the adjusting assembly 40 further includes an adjusting knob 42, which is sleeved on one end of the adjusting screw 41 extending out of the two end surfaces of the base 10, and can be operated conveniently, and a worker can control the adjusting screw 41 to rotate in the base 10 by adjusting the adjusting knob 42.
In this embodiment, the top end of the adjusting knob 42 has a cross-shaped groove, which facilitates the screwing of the adjusting knob 42 by using a tool.
As an embodiment of the expandable bone formation device according to the embodiment of the present invention, referring to fig. 1 to 6, each of the first expansion flaps 21 includes a first turning portion 211 and a first hinge portion 212. The first turnover part 211 is used for turning along the length direction of the base body 10, and can support the damaged part of the patient bone after turning. First articulated portion 212 is articulated mutually with base member 10, and is connected with first upset portion 211, and first articulated portion 212 includes first worm gear structure, and first worm gear structure can be fan-shaped, and first worm gear structure and adjusting screw 41's helical tooth portion 411 screw-thread fit can rotate along with adjusting screw 41's rotation to can drive first upset portion 211 and overturn, simple structure, the practicality is strong.
It should be noted that the first worm gear structure in the first hinge portion 212 can be self-locked with the helical tooth portion 411.
Referring to fig. 1 to 6 together, as a specific implementation manner of the expandable bone shaping device provided in the embodiment of the present invention, the first flipping part 211 has a semi-circular conical structure, a semi-circular first groove 213 for placing the extending end of the adjusting screw 41 is disposed on the first flipping part 211 during the flipping-over and closing, and an axis of the first groove 213 is collinear with an axis of the adjusting screw 41. The semicircular conical structure is convenient to place in the damaged part of the skeleton, the stress area of the damaged part can be reduced, the pressure of the butt joint is increased, and the stable placement of the expandable bone forming device at the damaged part of the skeleton can be further ensured. The first groove 213 can ensure that after the two first opening flaps 21 are closed, a placing space can be provided for the extended adjusting screw 41, so that the two first opening flaps 21 can be conveniently closed.
Referring to fig. 1 to 6 together, the second spreading flap 31 includes a second turning portion 311 and a second hinge portion 312. The second flipping part 311 is used for flipping along the longitudinal direction of the base 10, and can prop up the damaged portion of the patient's bone together with the first distraction flap 21. The second hinge portion 312 is hinged to the base 10 and connected to the second flipping portion 311, and the second hinge portion 312 includes a second worm gear structure engaged with the helical tooth portion 411 of the adjusting screw 41, and can rotate along with the rotation of the adjusting screw 41 and drive the second flipping portion 311 to flip.
It should be noted that the second worm gear structure in the first hinge portion 212 can be self-locked with the helical tooth portion 411.
Referring to fig. 1 to 6 together, as a specific implementation manner of the expandable bone shaping device provided in the embodiment of the present invention, the second turning part 311 is a semi-cone structure, a semi-circular truncated second groove 313 for placing the adjusting knob 42 during turning over and closing is disposed on the second turning part 311, and an axis of the second groove 313 is collinear with an axis of the adjusting screw 41. The semicircular conical structure is convenient to place in the damaged part of the skeleton, the stress area of the damaged part can be reduced, the pressure at the abutting part is increased, and the supporting type bone forming device can be further guaranteed to be stably placed at the missing part of the skeleton. The second groove 313 can ensure that after the two second split petals 31 are closed, a placing space can be provided for the extended adjusting knob 42, so that the two second split petals 31 can be conveniently placed in a closed manner.
As an embodiment of the expandable bone shaping device according to the embodiment of the present invention, referring to fig. 1 to 6, the adjusting screw 41 further includes a light rod part 412. Two helical tooth portions 411 are respectively disposed at two ends of the adjusting screw 41, and the rotation directions of the two helical tooth portions 411 are opposite and are respectively used for meshing with the first worm gear structure of the first hinge portion 212 and the second worm gear structure of the second hinge portion 312. The polished rod part 412 is arranged between the two spiral tooth parts 411, and the diameter of the polished rod part 412 is larger than that of the spiral tooth parts 411, so that the polished rod part 412 can be rotatably connected with the base body 10 to ensure the axial fixation of the adjusting screw rod 41 in the base body 10.
Referring to fig. 1 to 6 together, as a specific embodiment of the expandable bone forming device according to an embodiment of the present invention, a base 10 is a cylindrical structure, and the cylindrical structure can be conveniently placed on an injured and collapsed portion of a bone. The outer surface of base member 10 is equipped with porous bone fusion layer 11, and porous bone fusion layer 11 can be convenient for bone regeneration back and fuse with base member 10, and the outer surface of first lamella 21 and second lamella 31 of strutting all is equipped with porous bone fusion layer 11, the bone regeneration of being convenient for fuses.
In this embodiment, the structure of the substrate 10 may be other prismatic structures.
Referring to fig. 1 to 6 together, as a specific embodiment of the expandable bone forming device provided in the embodiment of the present invention, the diameter of the bottom surface of the first flipping part 211 is equal to the diameter of the base 10, and the diameter of the bottom surface of the second flipping part 311 is equal to the diameter of the base 10. The structure is convenient for placing the expandable bone forming device, simultaneously ensures that the space occupancy rate is moderate when the damaged part of the bone is expanded, can be convenient for the regeneration of the bone in the hole in the period of bone recovery, and is fused with the expandable bone forming device.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. Distractable bone shaping device, comprising:
a substrate for placement in a patient in the absence of damaged bone;
the first opening valve component is positioned at one end of the base body and comprises at least two first opening valves, each first opening valve is hinged with one end of the base body, the first opening valves can be mutually closed to form a conical or frustum-shaped structure, and each first opening valve can be in an opening state relative to the central axis of the base body; each first opening flap comprises a first turning part and a first hinge part; the first overturning part is used for overturning along the length direction of the base body and used for supporting the damaged part of the skeleton of the patient; the first hinge part is hinged with the base body and connected with the first overturning part, and the first hinge part comprises a first worm gear structure;
the second opening valve component is positioned at the other end of the base body and comprises at least two second opening valves, each second opening valve is hinged with the other end of the base body, the second opening valves can be mutually closed to form a conical or frustum-shaped structure, and each second opening valve can be in an opening state relative to the central axis of the base body; each second distraction flap comprises a second flip portion and a second hinge portion; the second overturning part is used for overturning along the length direction of the base body and used for supporting the damaged part of the skeleton of the patient; the second hinge part is hinged with the base body and is connected with the second overturning part, and the second hinge part comprises a second worm gear structure; and
the adjusting assembly comprises an adjusting screw rod, the adjusting screw rod is arranged inside the base body along the central axis direction of the base body, two ends of the adjusting screw rod respectively extend out of two end faces of the base body, the adjusting screw rod comprises a spiral tooth part, and the spiral tooth part is respectively meshed with the first worm gear structure and the second worm gear structure and is used for rotating and adjusting the two first opening petals and the two second opening petals to be opened in a turnover mode or closed in a turnover mode;
the first opening valve component is used for supporting the part of the patient with the damaged and collapsed bone through the opening of each first opening valve, and the second opening valve component is used for further supporting the part of the patient with the damaged and collapsed bone through the opening of each second opening valve.
2. The distractible bone shaping device of claim 1, wherein the adjustment assembly further comprises an adjustment knob coupled to the adjustment screw and located outside the base for facilitating operator manipulation of the adjustment screw for rotation within the base.
3. The distractible bone shaping device of claim 2, wherein the first upturned portion is of a semi-conical configuration, and wherein the first upturned portion defines a first recess for receiving the extended end of the adjustment screw when the first upturned portion is closed.
4. The distractible bone shaping device of claim 3, wherein the second turning portion is of a semi-conical configuration, and wherein the second turning portion has a semi-circular truncated-cone-shaped second recess for receiving the adjustment knob when turned closed, the axis of the second recess being collinear with the axis of the adjustment screw.
5. The distractible bone shaping device of claim 4 wherein said adjustment screw further comprises a polished rod portion;
the two spiral tooth parts are respectively arranged at two ends of the adjusting screw rod, the rotating directions of the two spiral tooth parts are opposite and are respectively used for being meshed with the first hinge part and the second hinge part, the polished rod part is arranged between the two spiral tooth parts, and the diameter of the polished rod part is larger than that of the spiral tooth part and is used for being rotatably connected with the base body.
6. The expandable bone formation device of claim 5, wherein the matrix is a cylindrical structure, and the outer surface of the matrix is provided with a porous bone fusion layer, and the porous bone fusion layer is used for fusing with the matrix after bone regeneration;
the outer surfaces of the first distraction valve and the second distraction valve are provided with porous bone fusion layers for bone regeneration fusion.
7. The distractible bone shaping device of claim 6 wherein the bottom surface of the first upturned portion has a diameter equal to the diameter of the base;
the diameter of the bottom surface of the second overturning part is equal to that of the base body.
CN202010053491.1A 2020-01-17 2020-01-17 Expandable bone forming device Active CN111249039B (en)

Priority Applications (1)

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