WO2023124032A1 - 人工椎体 - Google Patents

人工椎体 Download PDF

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Publication number
WO2023124032A1
WO2023124032A1 PCT/CN2022/107155 CN2022107155W WO2023124032A1 WO 2023124032 A1 WO2023124032 A1 WO 2023124032A1 CN 2022107155 W CN2022107155 W CN 2022107155W WO 2023124032 A1 WO2023124032 A1 WO 2023124032A1
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WO
WIPO (PCT)
Prior art keywords
rotating body
housing
artificial vertebral
matching
vertebral body
Prior art date
Application number
PCT/CN2022/107155
Other languages
English (en)
French (fr)
Inventor
吴海源
许书富
张雪东
张勋
甄超
董亚龙
董骧
Original Assignee
北京纳通医疗科技控股有限公司
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 北京纳通医疗科技控股有限公司 filed Critical 北京纳通医疗科技控股有限公司
Publication of WO2023124032A1 publication Critical patent/WO2023124032A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • 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
    • A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
    • 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
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30494—Cooperating protrusions and recesses, e.g. radial serrations, located on abutting end surfaces of a longitudinal connection
    • 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
    • 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
    • A61F2002/30556—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting thickness
    • 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
    • A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring elements

Definitions

  • the present disclosure relates to the technical field of medical devices, in particular, to an artificial vertebral body.
  • Artificial vertebral bodies are used to treat vertebral body burst fractures, kyphotic deformities, spinal tumors and other diseases.
  • the damaged or diseased vertebral bodies of the patient need to be resected, and the vertebral body substitutes are used to maintain the normal spine after resection. Load and physiological curvature.
  • the adjustment of the artificial vertebral body is inconvenient, the structure is unstable, and the end plate is easy to sink during use.
  • Embodiments of the present disclosure provide an artificial vertebral body with convenient adjustment, stable structure and anti-retraction mechanism.
  • the artificial vertebral body of the embodiment of the present disclosure includes: a housing, the inner peripheral surface of the housing has a first matching portion; a rotating body, the rotating body is rotatably arranged in the housing, and the outer circumference of the rotating body
  • the surface has a second matching part, the first matching part can be matched with the second matching part, so as to limit the rotating body to only rotate clockwise or counterclockwise; the supporting part, the supporting part runs through the rotating body And screwed with the rotating body, the rotating body is rotatable relative to the housing to drive the supporting member to move along the axial direction of the rotating body.
  • the artificial vertebral body in the embodiment of the present disclosure is provided with a rotating body, a first matching part and a second matching part, and the self-locking of the artificial vertebral body expansion mechanism can be realized through the first matching part and the second matching part, thereby achieving stable height maintenance. Meet the surgical requirements.
  • the housing includes an elastic portion, the elastic portion is disposed opposite to the rotating body in the radial direction of the rotating body, and the first matching portion is formed in the elastic portion. side, so that the elastic part can drive the first matching part and the second matching part to separate.
  • the housing has a base body and the elastic portion, the base body has a chamber, the rotating body is rotatably disposed in the chamber, and the base body is disposed adjacent to one end of the rotating body.
  • the second matching portion includes a plurality of ratchets, and the plurality of ratchets are arranged at intervals along the outer peripheral surface of the rotating body, the first matching portion is a protrusion, and the protrusion can Located between two adjacent ratchets, when the rotating body rotates clockwise or counterclockwise, the protrusions can slide over the ratchets, and the protrusions can limit all The rotating body rotates in the opposite direction.
  • the artificial vertebral body further includes a driving member, which is passed through the elastic part and can drive the elastic part to move so that the first matching part and the second matching part Leave.
  • the elastic part is provided with a through hole passing through the elastic part, and the driving part is fitted in the through hole through threads.
  • the housing is provided with a limiting member, and the limiting member can cooperate with the rotating body to restrict the rotating body from slipping out of the housing along the axial direction of the rotating body.
  • the limiting member is a pin shaft
  • the outer peripheral surface of the rotating body is provided with a positioning groove extending along its circumference, and the pin shaft passes through the housing to cooperate with the positioning groove, In order to limit the movement of the rotating body along the axial direction of the rotating body.
  • the limiting member is a locking protrusion
  • the locking protrusion is arranged at one end of the casing adjacent to the rotating body and extends inwardly along the radial direction of the rotating body. An end of the rotating body away from the housing is abutted against, so as to limit the rotating body from slipping out of the housing along the axial direction of the rotating body.
  • the end of the housing away from the support and the end of the support away from the housing are both provided with a plurality of protrusions.
  • the artificial vertebral body further includes a first endplate and a second endplate, the first endplate is detachably arranged on the end of the support member away from the shell, and the second endplate
  • the end plate is detachably arranged on the end of the housing away from the support, the end of the first end plate away from the support is the first end, and the second end plate is away from the end of the housing.
  • One end is a second end, and both the first end and the second end are provided with a plurality of protrusions.
  • Fig. 1 is a schematic structural view of an artificial vertebral body according to the first embodiment of the present disclosure.
  • Fig. 2 is a schematic structural view of a support member and an end plate of an artificial vertebral body according to the first embodiment of the present disclosure.
  • Fig. 3 is an exploded view of the rotating body and the casing of the artificial vertebral body according to the first embodiment of the present disclosure.
  • Fig. 4 is an assembly view of the rotating body and the casing of the artificial vertebral body according to the first embodiment of the present disclosure.
  • Fig. 5 is a top view of the rotating body and the casing of the artificial vertebral body according to the first embodiment of the present disclosure.
  • Fig. 6 is a schematic structural view of the rotating body of the artificial vertebral body according to the first embodiment of the present disclosure.
  • Fig. 7 is a cross-sectional view of the rotating body of the artificial vertebral body according to the first embodiment of the present disclosure.
  • Fig. 8 is a schematic structural view of the shell of the artificial vertebral body according to the first embodiment of the present disclosure.
  • Fig. 9 is a top view of the shell of the artificial vertebral body according to the first embodiment of the present disclosure.
  • Fig. 10 is an exploded view of the rotating body and the casing of the artificial vertebral body according to the second embodiment of the present disclosure.
  • Fig. 11 is a schematic structural view of the shell of the artificial vertebral body according to the second embodiment of the present disclosure.
  • Fig. 12 is a schematic structural view of the shell of the artificial vertebral body according to the second embodiment of the present disclosure.
  • Artificial vertebral body 100 support member 1; limiting groove 11; end plate 2; raised part 21; shell 3; first matching part 31; transition surface 311; elastic part 32; through hole 321; 331; notch 34; card protrusion 35; operating hole 36; rotating body 4; second matching part 41; positioning groove 42; first part 43; second part 44;
  • the types of artificial vertebral bodies include titanium cages and expandable artificial vertebral bodies.
  • the titanium cage has the following disadvantages: the titanium cage needs to be cut according to the actual height during the operation, and the height matching is not strong. In addition, the titanium cage is easy to cause collapse, even if The upper and lower end covers of the titanium cage also need to be fixed with screws, and the operation is more cumbersome.
  • the artificial vertebral body of the embodiment of the present disclosure will be described below with reference to FIGS. 1-12 .
  • the artificial vertebral body of the embodiment of the present disclosure includes a casing 3 , a rotating body 4 and a support member 1 .
  • the inner peripheral surface of the housing 3 has a first matching portion 31 , specifically, as shown in FIG. 8 and FIG. 9 , the first matching portion 31 is provided on the inner peripheral surface of the upper end of the housing 3 .
  • the rotating body 4 is rotatably arranged in the casing 3, and the outer peripheral surface of the rotating body 4 has a second matching portion 41, and the first matching portion 31 can cooperate with the second matching portion 41, so as to limit the rotating body 4 to be only able to rotate clockwise or clockwise. Turn counterclockwise.
  • the rotating body 4 is rotatably arranged in the upper end of the housing 3, the rotating body 4 includes a connected first part 43 and a second part 44, and the outer peripheral surface of the first part 43 is provided with a movable
  • the second matching part 41 matched with the first matching part 31, through the cooperation of the first matching part 31 and the second matching part 41, the rotating body 4 can rotate clockwise and cannot rotate counterclockwise, or the rotating body 4 can rotate counterclockwise.
  • the hour hand turns and cannot turn clockwise.
  • the supporting member 1 passes through the rotating body 4 and is screwed with the rotating body 4 .
  • the rotating body 4 is rotatable relative to the housing 3 to drive the supporting member 1 to move along the axial direction of the rotating body 4 (up and down as shown in FIG. 1 ).
  • the support member 1 runs through the rotating body 4, and the lower end of the support member 1 is set in the housing 3, the outer peripheral side of the supporting member 1 is provided with external threads, and the inner periphery of the rotating body 4 The side is provided with an internal thread, so that the rotating body 4 rotates clockwise to drive the support member 1 to move upward.
  • the first matching part 31 and the second matching part 41 can realize the automatic expansion mechanism.
  • the first matching part 31 and the second matching part 41 can realize the self-locking of the spreading mechanism, prevent the rotating body 4 from rotating clockwise, and realize the stable maintenance of the height of the supporting member 1 .
  • the artificial vertebral body 100 of the embodiment of the present disclosure is provided with a rotating body 4, a first fitting part 31 and a second fitting part 41, and by rotating the rotating body 4 to drive the supporting part 1 to move up and down, the artificial vertebral body 100 is stretched, and the second The first matching part 31 and the second matching part 41 can realize the self-locking of the expansion mechanism of the artificial vertebral body 100, thereby realizing the stable maintenance of the height of the artificial vertebral body 100, and the first matching part 31 is arranged on the inner peripheral surface of the shell 3, and the second The two matching parts 41 are arranged on the rotating body 4, so that there is no specific requirement on the thickness of the outer wall of the casing 3, and the addition of the first matching part 31 and the second matching part 41 will not affect the space for bone grafting.
  • the end of the rotating body 4 facing the inside of the housing 3 is provided with a plurality of operating teeth 45 extending along the circumferential direction of the rotating body 4, and the plurality of operating teeth 45 are arranged at even intervals along the circumferential direction of the rotating body 4.
  • 3 is provided with an operation hole 36, and a part of the operation teeth 45 is arranged opposite to the operation hole 36 in the radial direction of the rotating body 4 (inward and outward directions as shown in FIG. 1 ).
  • the lower end surface of the second part 44 is provided with a plurality of operating teeth 45, and the plurality of operating teeth 45 are arranged at equal intervals along the circumferential direction of the rotating body 4, and the housing 3 is provided with through
  • the operating hole 36 of the housing 3 the operating hole 36 and the operating tooth 45 are arranged oppositely in the inner and outer direction, and the rotating handle 5 can be used to pass through the operating hole 36 and cooperate with the operating tooth 45 of the second part 44, thereby driving the rotating handle 5 to drive
  • the rotating body 4 rotates in the housing 3 .
  • the end of the rotating handle 5 connected to the operating hole 36 is set as a gear structure, and the gear structure can be engaged with the operating teeth 45, so that the rotating handle 5 can be rotated to drive the rotating body 4 to rotate.
  • the operating handle 5 and the gear structure in All are known in the art, and will not be repeated here.
  • the housing 3 includes an elastic portion 32, the elastic portion 32 is arranged opposite to the rotating body 4 in the radial direction of the rotating body 4 (inward and outward directions as shown in FIG. 1 ), and the first matching portion 31 is formed on The inner surface of the elastic part 32 is so that the elastic part 32 can drive the first matching part 31 and the second matching part 41 to separate.
  • the elastic portion 32 has the ability to elastically deform, the elastic portion 32 is located at the upper end of the housing 3 and is arranged opposite to the rotating body 4 in the inner and outer direction, and the first matching portion 31 is arranged on the elastic
  • the elastic part 32 can be pulled to move outward along the inner and outer directions to drive the first matching part 31 to move outward, or the elastic part 32 can be pulled to move upward in the up-down direction To drive the first matching part 31 to move upward, or pull the elastic part 32 to move downward in the up and down direction to drive the first matching part 31 to move downward, so that the first matching part 31 and the second matching part 41 on the rotating body 4 disengage, so as to realize the unlocking of the first matching part 31 and the second matching part 41, and then make the rotating body 4 reverse to lower the position of the support 1.
  • the elastic part 32 since the elastic part 32 has
  • the housing 3 has a base body 33 and an elastic portion 32
  • the base body 33 has a cavity 331
  • the rotating body 4 is rotatably disposed in the cavity 331
  • one end of the base body 33 adjacent to the rotating body 4 is provided with a notch 34
  • the elastic portion 32 is disposed in the notch 34
  • the elastic portion 32 extends along the circumferential direction of the housing 3
  • one end of the elastic portion 32 in the extending direction is connected to the housing 3 .
  • the base body 33 is a sleeve without a top surface, the inner peripheral surface of the sleeve forms a chamber 331, and the rotating body 4 is rotatably arranged in the chamber 331, and the base body 33
  • the side surface of the upper end is provided with a notch 34 that runs through the base body 33 along the internal and external direction, the elastic part 32 is located in the notch 34 and one side of the elastic part 32 is connected with the notch 34, and the upper end surface of the elastic part 32 is flat with the base body 33 Align, the bottom surface of the elastic part 32 and the other side of the elastic part 32 are spaced apart from the inner peripheral surface of the notch 34, when the height of the support 1 needs to be lowered, the elastic part 32 can be pulled out from the notch 34, Thus, it is convenient to disengage the first fitting part 31 and the second fitting part 41 .
  • the bottom of the chamber 331 is provided with a stepped surface.
  • the rotating body 4 When the rotating body 4 is arranged in the chamber 331, the operating teeth 45 of the rotating body 4 can abut against the stepped surface.
  • the rotating body 4 By setting the stepped surface, the rotating body 4 can The position within the chamber 331 is defined.
  • the elastic part 32 and the base body 33 can be integrally formed to ensure the stability of the overall structure.
  • the elastic part 32 can be formed by cutting the base body 33 by means of wire cutting or the like. In other embodiments, other processing methods can also be used, and the elastic part 32 and the base body 33 can also be provided as separate structures.
  • the second matching portion 41 includes a plurality of ratchets arranged at intervals along the outer peripheral surface of the rotating body 4
  • the first matching portion 31 is a protrusion
  • the protrusion can be located between two adjacent ratchets. Between them, when the rotating body 4 rotates in one of clockwise or counterclockwise directions, the protrusion can slide over the ratchet, and the protrusion can restrict the rotating body 4 from rotating in the other opposite direction.
  • the second matching portion 41 is a plurality of ratchets, which are arranged at intervals along the outer circumference of the rotating body 4, and the plurality of ratchets can rotate synchronously with the rotating body 4.
  • a matching part 31 is a protrusion, and the protrusion is arranged on the inner peripheral surface of the elastic part 32.
  • the inner peripheral surface of the protrusion extends clockwise and slopes inwardly along the inner and outer directions, and the protrusion can be a curved surface or a straight surface.
  • the rotating body 4 drives a plurality of ratchets
  • the ratchet can slide on the transition surface 311, so that the rotating body 4 rotates smoothly.
  • the rotating body 4 rotates counterclockwise, the raised side will be stuck with the ratchet, thereby preventing rotation
  • the body 4 counterclockwise, when the height of the support 1 needs to be lowered, the elastic part 32 is pulled to drive the ratchet to disengage from the protrusion, so that the rotating body 4 can rotate counterclockwise, or (as shown in Figure 4 and Figure 5 ) when When the height of the support 1 needs to be raised, the multiple ratchets rotate counterclockwise with the rotating body 4, and the protrusions can be inserted into the tooth grooves of two adjacent ratchets.
  • the rotating body 4 drives the multiple ratchets to rotate When passing through an angle, the ratchet can slide on the transition surface 311, so that the rotating body 4 can rotate smoothly.
  • the rotating body 4 rotates clockwise, because the raised side will be stuck with the ratchet, thereby preventing the rotating body 4 Rotate clockwise, when the height of the supporting member 1 needs to be lowered, pull the elastic part 32 to drive the ratchet to disengage from the protrusion, so that the rotating body 4 can rotate clockwise.
  • the artificial vertebral body 100 also includes a driver (not shown in the figure), the driver is passed through the elastic part 32, and can drive the elastic part 32 to move so that the first matching part 31 and the second matching part 41 separation.
  • the driving member can be a pin shaft and can be worn on the elastic portion 32 , and the elastic portion 32 is driven away from the rotating body 4 by the driving member, so that the first matching portion 31 and the second matching portion 41 are separated.
  • the elastic portion 32 is provided with a through hole 321 passing through the elastic portion 32 , and the driving member is fitted into the through hole 321 through threads.
  • the elastic portion 32 is provided with a through hole 321 penetrating the elastic portion 32 along the internal and external directions
  • the driving member is provided with external threads
  • the elastic portion 32 is provided with internal threads that match the external threads. thread, so that the driver is fixed on the elastic part 32 through the cooperation of the internal and external threads, preventing the driver from breaking away from the elastic part 32, and ensuring the moving efficiency of the driver to drive the elastic part 32.
  • the driving member by rotating the driving member, the driving member abuts against the rotating body 4 and continues to rotate the driving member. Due to the action of the rotating body 4, the elastic part 32 will be pushed away from the rotating body 4, so that the first The first matching portion 31 is separated from the second matching portion 41 ; the first matching portion 31 and the second matching portion 41 can also be separated by directly pulling the elastic portion 32 outward through the driving member.
  • the driving member and the through hole 321 can also be engaged by clamping, interference fit, etc., and the through hole 321 and the operation hole 36 are arranged opposite to each other in the up and down direction. Specifically, the through hole 321 and the operation hole 36 are arranged opposite to each other in the vertical direction.
  • a dual-channel tube can be used to implant into the human body, so that the two channels are respectively aligned with the through hole 321 and the operation hole. Hole 36, then stretch into the operating handle 5 or the driver in the double channel pipe, which can simplify the operation process.
  • the through hole 321 can be set as a full hole or larger than a half hole. In other embodiments, the through hole 321 and the operation hole 36 are arranged staggered up and down.
  • the housing 3 is provided with a limiting member, which can cooperate with the rotating body 4 to restrict the rotating body 4 from slipping out of the housing 3 along the axial direction of the rotating body 4 .
  • a limiting member which can cooperate with the rotating body 4 to restrict the rotating body 4 from slipping out of the housing 3 along the axial direction of the rotating body 4 .
  • the limiting member is a pin shaft (not shown in the figure)
  • the outer peripheral surface of the rotating body 4 is provided with a positioning groove 42 extending along its circumferential direction
  • the pin shaft passes through the housing 3 to cooperate with the positioning groove 42 , so as to restrict the movement of the rotating body 4 along the axial direction of the rotating body 4 .
  • the outer peripheral side of the rotating body 4 is provided with an annular positioning groove 42, and one end of the pin shaft can pass through the housing 3 and be placed in the positioning groove 42, so that when the rotating body 4 When rotating, due to the cooperation of the positioning groove 42 and the pin shaft, the rotating body 4 can be smoothly rotated in the housing 3, preventing the rotating body 4 from moving in the up and down direction, thereby ensuring that the rotating body 4 only rotates in the housing 3 , to prevent the rotating body 4 from moving up and down in the housing 3 .
  • the limiting member is a locking protrusion 35, which is arranged at one end of the casing 3 adjacent to the rotating body 4 and extends inward along the radial direction of the rotating body 4, and the locking protrusion 35 and the rotating body 4 are far away from the housing.
  • One end of the body 3 abuts against each other to restrict the rotating body 4 from coming out of the housing 3 along the axial direction of the rotating body 4 .
  • the locking protrusion 35 is arranged on the elastic part 32, and the rotation body 4 can be restricted in the chamber 331 through the cooperation of the locking protrusion 35 and the step surface, and the locking protrusion 35 is arranged on the elastic part 331 at the same time.
  • the elastic part 32 can be pulled apart by the driving member so that the locking protrusion 35 does not interfere. After the rotating body 4 is placed, the elastic part 32 is loosened. At this time, the locking protrusion 35 can limit the position of the rotating body 4 , which saves the trouble of setting the positioning groove 42 on the rotating body 4 , and the operation is simple and convenient.
  • the housing 3 further includes a connecting plate (not shown in the figure), the connecting plate is arranged at one end of the housing 3 adjacent to the rotating body 4, and the locking protrusion 35 is formed on the side of the connecting plate facing the rotating body 4 .
  • the upper end of the housing 3 is provided with a mounting hole (not shown in the figure), the connecting plate is located in the mounting hole, and the bottom of the connecting plate is connected to the bottom of the mounting hole, and the locking protrusion 35 is formed on the upper end of the connecting plate
  • the locking protrusion 35 is in contact with the upper end surface of the rotator 4, and the rotator 4 can be conveniently installed in the housing 3 through the connecting plate, thereby improving the installation efficiency of the rotator 4.
  • the outer peripheral side of the support member 1 is provided with a limiting groove 11 extending in the up and down direction, and one end of the pin 6 passes through the housing 3 and is set in the limiting groove 11, so that the pin 6 and the limiting The cooperation of the slot 11 limits the rotation of the support member 1 .
  • the outer peripheral side of the support member 1 is provided with a limiting groove 11 extending in the up and down direction, and one end of the pin 6 passes through the housing 3 and is inserted into the limiting groove 11, thereby passing The cooperation between the pin 6 and the groove 11 limits the rotation of the support member 1, so that the rotation of the rotating body 4 drives the support member 1 to move up and down.
  • the end of the housing 3 away from the support 1 and the end of the support 1 away from the housing 3 are both provided with a plurality of protrusions 21 .
  • an end plate 2 is provided on the end of the housing 3 away from the support member 1, and a plurality of protrusions 21 are provided on the bottom of the housing 3 and the top of the end plate 2.
  • the protrusions 21 are conical, and through a plurality of The raised portion 21 can increase the initial stability of the connection between the endplate 2 and the shell 3 and the vertebrae of the human body, and achieve long-term fixation after the human bone grows and is completely connected with the connecting body of the artificial vertebral body 100 .
  • the artificial vertebral body 100 also includes a first endplate and a second endplate (not shown in the figure), the first endplate is detachably arranged at the end of the support member 1 away from the shell 3, the second endplate The two end plates are detachably arranged at the end of the shell 3 away from the support 1, the end of the first end plate away from the support 1 is the first end, and the end of the second end plate away from the shell 3 is the second end, Both the first end and the second end are provided with a plurality of protrusions 21 .
  • the first end plate can be fixed on the upper end of the support member 1 by fasteners (not shown in the figure) and the upper end of the first end plate is provided with a plurality of protrusions 21,
  • the second The end plate can be fixed on the lower end of the housing 3 by fasteners (not shown in the figure), and the lower end of the second end plate is provided with a plurality of raised portions 21, so that different shapes (rectangular or circular) can be replaced according to actual conditions. ) of the first endplate and the second endplate, so that the artificial vertebral body can be adapted to different positions such as the cervical spine or the thoracolumbar spine, and the therapeutic effect of the artificial vertebral body 100 is improved.
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features.
  • the features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • a first feature being “on” or “under” a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch.
  • “above”, “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • “Below”, “beneath” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • the terms “one embodiment,” “some embodiments,” “example,” “specific examples,” or “some examples” mean a specific feature, structure, material, or feature described in connection with the embodiment or example. Features are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

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Abstract

一种人工椎体，包括壳体（3）、转动体（4）和支撑件（1），壳体（3）的内周面具有第一配合部（31），转动体（4）可转动地设在壳体（3）内，转动体（4）的外周面具有第二配合部（41），第一配合部（31）能够与第二配合部（41）配合，以限制转动体（4）仅能够顺时针或逆时针转动，支撑件（1）贯穿转动体（4）且与转动体（4）螺接，转动体（4）相对于壳体（3）可转动以带动支撑件（1）沿转动体（4）的轴向移动。

Description

人工椎体
相关申请的交叉引用
本申请要求在2021年12月31日在中国提交的中国专利申请号202111660565.9的优先权，其全部内容通过引用并入本文。
技术领域
本公开涉及医疗器械技术领域，具体地，涉及一种人工椎体。
背景技术
人工椎体用于治疗椎体爆裂骨折、脊柱后凸畸形、脊柱肿瘤等疾病，在手术中需要将患者受损或病变的椎体进行切除，切除后使用椎体替代物移植以维持正常的脊柱载荷及生理曲度。
相关技术中，人工椎体调节不方便、结构不稳定、在使用过程中终板易沉陷。
发明内容
本公开的实施例提出一种调节方便、结构稳定、具有防退机制的人工椎体。
本公开实施例的人工椎体包括：壳体，所述壳体的内周面具有第一配合部；转动体，所述转动体可转动地设在所述壳体内，所述转动体的外周面具有第二配合部，所述第一配合部能够与所述第二配合部配合，以限制所述转动体仅能够顺时针或逆时针转动；支撑件，所述支撑件贯穿所述转动体且与所述转动体螺接，所述转动体相对于所述壳体可转动以带动所述支撑件沿所述转动体的轴向移动。
本公开实施例的人工椎体，设置转动体、第一配合部和第二配合部，通过第一配合部和第二配合部能够实现人工椎体撑开机制自锁，从而实现高度稳定保持，满足手术要求。
在一些实施例中，所述壳体包括弹性部，所述弹性部与所述转动体在所述转动体的径向方向上相对设置，所述第一配合部形成在所述弹性部的内侧面，以便所述弹性部能够带动所述第一配合部和所述第二配合部分离。
在一些实施例中，所述壳体具有基体和所述弹性部，所述基体具有腔室，所述转动体可转动地设在所述腔室内，所述基体邻近所述转动体的一端设有槽口，所述弹性部设在所述槽口内，所述弹性部沿所述壳体的周向延伸，所述弹性部的延伸方向的一端与所述壳体相连。
在一些实施例中，所述第二配合部包括多个棘齿，多个所述棘齿沿所述转动体的外周 面间隔设置，所述第一配合部为凸起，所述凸起能够位于相邻两个所述棘齿之间，所述转动体沿顺时针或逆时针其中一个方向转动时，所述凸起能够从所述棘齿上滑过，且所述凸起能够限制所述转动体沿另一个相反方向转动。
在一些实施例中，所述人工椎体还包括驱动件，所述驱动件穿设在所述弹性部内，能够驱动所述弹性部移动以使所述第一配合部与所述第二配合部分离。
在一些实施例中，所述弹性部上设有贯穿所述弹性部的通孔，所述驱动件通过螺纹配合在所述通孔内。
在一些实施例中，所述壳体设置有限位件，所述限位件能够与所述转动体配合以限制所述转动体沿所述转动体的轴向脱出所述壳体。
在一些实施例中，所述限位件为销轴，所述转动体的外周面设有沿其周向延伸的定位槽，所述销轴穿过所述壳体与所述定位槽配合，以便限制所述转动体沿所述转动体轴向移动。
在一些实施例中，所述限位件为卡凸，所述卡凸设置于所述壳体邻近所述转动体的一端且沿所述转动体的径向向内延伸，所述卡凸与所述转动体远离所述壳体的一端相抵，以限制所述转动体沿所述转动体的轴向脱出所述壳体。
在一些实施例中，所述壳体远离所述支撑件的一端和所述支撑件远离所述壳体的一端均设置有多个凸起部。
在一些实施例中，所述人工椎体还包括第一终板和第二终板，所述第一终板可拆卸地设在所述支撑件远离所述壳体的一端，所述第二终板可拆卸地设在所述壳体远离所述支撑件的一端，所述第一终板背离所述支撑件的一端为第一端部，所述第二终板背离所述壳体的一端为第二端部，所述第一端部和所述第二端部均设有多个凸起部。
附图说明
图1是本公开第一实施例的实施例的人工椎体的结构示意图。
图2是本公开第一实施例的实施例的人工椎体的支撑件和终板的结构示意图。
图3是本公开第一实施例的人工椎体的转动体和壳体的爆炸图。
图4是本公开第一实施例的人工椎体的转动体和壳体的装配图。
图5是本公开第一实施例的人工椎体的转动体和壳体的俯视图。
图6是本公开第一实施例的人工椎体的转动体的结构示意图。
图7是本公开第一实施例的人工椎体的转动体的剖视图。
图8是本公开第一实施例的人工椎体的壳体的结构示意图。
图9是本公开第一实施例的人工椎体的壳体的俯视图。
图10是本公开第二实施例的人工椎体的转动体和壳体的爆炸图。
图11是本公开第二实施例的人工椎体的壳体的结构示意图。
图12是本公开第二实施例的人工椎体的壳体的结构示意图。
附图标记：
人工椎体100；支撑件1；限位槽11；终板2；凸起部21；壳体3；第一配合部31；过渡面311；弹性部32；通孔321；基体33；腔室331；槽口34；卡凸35；操作孔36；转动体4；第二配合部41；定位槽42；第一部分43；第二部分44；操作齿45；旋转手柄5；销钉6。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
相关技术中，人工椎体的类型有钛笼和可撑开人工椎体，钛笼有以下缺点：术中需要根据实际高度裁剪钛笼，高度匹配性不强，此外钛笼容易导致塌陷，即使钛笼安装上下端盖，也需要螺丝等固定，操作较为繁琐。
可撑开人工椎体不存在防退机制，在静止情况下能够实现稳定撑开，在震动情况下可能会导致终板沉陷，另外也有在可撑开人工椎体内安装锁紧机制，即由螺钉直接压迫撑开内芯(本公开实施例的支撑件)，此结构存在以下弊端：由于需要螺钉锁紧，导致撑开主体必须保证一定厚度，导致内部植骨窗结构偏小，同时占用椎体高度，螺钉直接压迫椎体撑开内芯，锁紧效果不太稳定，容易导致螺钉松脱，终板沉陷。
下面参考附图1-12描述本公开实施例的人工椎体。
如图1-5所示，本公开实施例的人工椎体包括壳体3、转动体4和支撑件1。
壳体3的内周面具有第一配合部31，具体地，如图8和图9所示，壳体3的上端部的内周面上设有第一配合部31。
转动体4可转动地设在壳体3内，转动体4的外周面具有第二配合部41，第一配合部31能够与第二配合部41配合，以限制转动体4仅能够顺时针或逆时针转动。具体地，如图4-7所示，转动体4可转动的设在壳体3的上端部内，转动体4包括相连的第一部分43和第二部分44，第一部分43的外周面设有可与第一配合部31相配合的第二配合部41，通过第一配合部31和第二配合部41配合，使得转动体4能够顺时针转动且不能逆时针转动，或者使得转动体4能够逆时针转动且不能顺时针转动。
支撑件1贯穿转动体4且与转动体4螺接，转动体4相对于壳体3可转动以带动支撑件1沿转动体4的轴向(如图1所示的上下方向)移动。具体地，如图1-3所示，支撑件1 贯穿转动体4，且支撑件1的下端部设在壳体3内，支撑件1的外周侧设有外螺纹，转动体4的内周侧设有内螺纹，由此，通过转动体4顺时针转动以带动支撑件1向上移动，当人工椎体100撑开后，第一配合部31和第二配合部41能够实现撑开机制自锁，防止转动体4逆时针转动，实现支撑件1的高度稳定保持，或(如图4和图5所示)转动体4逆时针转动以带动支撑件1向上移动，当人工椎体100撑开后，第一配合部31和第二配合部41能够实现撑开机制自锁，防止转动体4顺时针转动，实现支撑件1的高度稳定保持。
本公开实施例的人工椎体100，设置转动体4、第一配合部31和第二配合部41，通过转动转动体4以带动支撑件1上下移动，使得人工椎体100撑开，且第一配合部31和第二配合部41能够实现人工椎体100撑开机制自锁，从而实现人工椎体100高度稳定保持，且第一配合部31设在壳体3的内周面上，第二配合部41设在转动体4上，从而对壳体3的外壁厚度无特定要求，不会因第一配合部31和第二配合部41的加入影响植骨的空间。
本实施例中，转动体4朝向壳体3内的一端设置有沿转动体4的周向延伸的多个操作齿45，多个操作齿45沿转动体4的周向均匀间隔设置，壳体3设置有操作孔36，部分操作齿45与操作孔36在转动体4的径向(如图1所示的内外方向)相对设置。具体地，如图2和图3所示，第二部分44的下端面设有多个操作齿45，多个操作齿45沿转动体4的周向等间隔设置，壳体3上设有贯穿壳体3的操作孔36，操作孔36与操作齿45在内外方向上相对设置，可利用旋转手柄5穿过操作孔36与第二部分44的操作齿45配合，从而通过转动旋转手柄5带动转动体4在壳体3内转动。可以理解的是，旋转手柄5与操作孔36连接的一端设置为齿轮结构，齿轮结构能够与操作齿45啮合，从而能够转动旋转手柄5以带动转动体4转动，至于操作手柄5以及齿轮结构在本领域中都是已知的，在此不再进行赘述。
在一些实施例中，壳体3包括弹性部32，弹性部32与转动体4在转动体4的径向方向(如图1所示的内外方向)上相对设置，第一配合部31形成在弹性部32的内侧面，以便弹性部32能够带动第一配合部31和第二配合部41分离。
具体地，如图3-12所示，弹性部32具有弹性变形的能力，弹性部32位于壳体3的上端部且与转动体4在内外方向上相对设置，第一配合部31设在弹性部32的内周侧，当需要降低支撑件1的高度时，可拉动弹性部32沿内外方向向外运动以带动第一配合部31向外运动，或拉动弹性部32在上下方向上向上运动以带动第一配合部31向上运动，或拉动弹性部32在上下方向上向下运动以带动第一配合部31向下运动，使得第一配合部31和转动体4上的第二配合部41脱离，从而实现第一配合部31和第二配合部41解锁，进而使得转动体4可以反转以使支撑件1的位置降低，当支撑件1的位置调节到合适的位置，可松开弹性部32，由于弹性部32具有弹性变形的能力，弹性部32可带动第一配合部31自动 和第二配合部41配合以防止支撑件1下沉。
在一些实施例中，壳体3具有基体33和弹性部32，基体33具有腔室331，转动体4可转动地设在腔室331内，基体33邻近转动体4的一端设有槽口34，弹性部32设在槽口34内，弹性部32沿壳体3的周向延伸，弹性部32的延伸方向的一端与壳体3相连。具体地，如图8、11和12所示，基体33为无顶面的套筒，套筒的内周面形成腔室331，转动体4可转动地设在腔室331内，基体33的上端部的侧面上设有沿内外方向贯穿基体33的槽口34，弹性部32设在槽口34内且弹性部32的一侧与槽口34相连，弹性部32的上端面与基体33平齐，弹性部32的底面和弹性部32的另一侧均与槽口34的内周面间隔设置，当需要降低支撑件1的高度时，可将弹性部32从槽口34内拉出，从而方便第一配合部31和第二配合部41脱离。本实施例中，腔室331的底部设置有台阶面，转动体4设置于腔室331内时，转动体4的操作齿45可抵接于台阶面上，通过设置台阶面能够对转动体4在腔室331内的位置进行限定。同时，弹性部32和基体33可一体成型，能够保证整体结构的稳定性，具体地，通过线切割等方式在基体33上进行切割以形成弹性部32即可。在其他实施例中，也可以通过其他加工方式进行加工，也可以将弹性部32和基体33设置为分体结构。
在一些实施例中，第二配合部41包括多个棘齿，多个棘齿沿转动体4的外周面间隔设置，第一配合部31为凸起，凸起能够位于相邻两个棘齿之间，转动体4沿顺时针或逆时针其中一个方向转动时，凸起能够从棘齿上滑过，且凸起能够限制转动体4沿另一个相反方向转动。
具体地，如图6-9所示，第二配合部41为多个棘齿，多个棘齿沿转动体4的外周侧间隔设置，且多个棘齿可随转动体4同步转动，第一配合部31为凸起，凸起设在弹性部32的内周面上，凸起的内周面沿顺时针方向延伸且沿内外方向向内倾斜，且凸起可以为曲面也可以为直面，当需要升高支撑件1的高度时，多个棘齿随转动体4顺时针转动，凸起可穿设在相邻的两个棘齿的齿槽中，当转动体4带动多个棘齿转过一个角度时，棘齿可在过渡面311上滑动，从而使得转动体4流畅地转动，当转动体4逆时针转动时，由于凸起的侧面将与棘齿卡死，从而防止转动体4逆时针，当需要降低支撑件1的高度时，拉动弹性部32以带动棘齿与凸起脱离，从而可使得转动体4逆时针转动，或(如图4和图5所示)当需要升高支撑件1的高度时，多个棘齿随转动体4逆时针转动，凸起可穿设在相邻的两个棘齿的齿槽中，当转动体4带动多个棘齿转过一个角度时，棘齿可在过渡面311上滑动，从而使得转动体4流畅地转动，当转动体4顺时针转动时，由于凸起的侧面将与棘齿卡死，从而防止转动体4顺时针转动，当需要降低支撑件1的高度时，拉动弹性部32以带动棘齿与凸起脱离，从而可使得转动体4顺时针转动。
在一些实施例中，人工椎体100还包括驱动件(图中未示意出)，驱动件穿设在弹性部32内，能够驱动弹性部32移动以使第一配合部31与第二配合部41分离。具体地，驱动件可以为销轴且可穿设在弹性部32上，通过驱动件带动弹性部32远离转动体4，从而使得第一配合部31和第二配合部41分离。
在一些实施例中，弹性部32上设有贯穿弹性部32的通孔321，驱动件通过螺纹配合在通孔321内。具体地，如图8和11所示，弹性部32上设有沿内外方向贯穿弹性部32的通孔321，驱动件上设有外螺纹，弹性部32上设有与外螺纹相配合的内螺纹，从而通过内外螺纹的配合，将驱动件固定在弹性部32上，防止驱动件和弹性部32脱离，保证了驱动件带动弹性部32的移动效率。本实施例中，通过旋转驱动件，使驱动件抵接到转动体4上，继续转动驱动件，由于转动体4的作用，将使弹性部32被顶起远离转动体4，从而能够使第一配合部31和第二配合部41分离；也可以直接通过驱动件向外拉扯弹性部32使第一配合部31和第二配合部41分离。
可以理解的是，驱动件和通孔321还可以通过卡接、过盈配合等，且通孔321和操作孔36在上下方向上相对设置。具体地，将通孔321和操作孔36在上下方向上相对设置，在椎体植入过程中，可使用双通道管植入到人体内，使其两个通道分别对准通孔321和操作孔36，然后在双通道管内伸入操作手柄5或驱动件即可，能够简化手术过程。同时，通孔321可设置为全孔或者大于半孔均可。在其他实施例中，通孔321和操作孔36在上下方向上错开设置。
在一些实施例中，壳体3设置有限位件，限位件能够与转动体4配合以限制转动体4沿转动体4轴向脱出壳体3。由此，通过限位件和台阶面与转动体4配合，使得转动体4能够在壳体3内顺时针或逆时针转动的同时能够限制转动体4沿上下方向移动，防止了转动体4从壳体3内滑脱，从而保证了转动体4的工作效率。
在一些实施例中，限位件为销轴(图中未示意出)，转动体4的外周面设有沿其周向延伸的定位槽42，销轴穿过壳体3与定位槽42配合，以便限制转动体4沿转动体4轴向移动。具体地，如图3-9所示，转动体4的外周侧设有环形定位槽42，销轴的一端可穿过壳体3且穿设在定位槽42内，由此，当转动体4转动时，由于定位槽42和销轴的配合，可使得转动体4在壳体3内流畅地转动，防止转动体4沿上下方向移动，从而保证了转动体4在壳体3内只进行转动，避免了转动体4在壳体3内沿上下方向窜动。
在另外一个实施例中，限位件为卡凸35，卡凸35设置于壳体3邻近转动体4的一端且沿转动体4的径向向内延伸，卡凸35与转动体4远离壳体3的一端相抵，以限制转动体4沿转动体4轴向脱出壳体3。具体地，如图10-11所示，卡凸35设置在弹性部32上，通过卡凸35和台阶面的配合能够将转动体4限制在腔室331内，同时将卡凸35设置在弹性部 32上，当需要将转动体4放置在壳体3内时，通过驱动件拉开弹性部32，使卡凸35不产生干涉即可，转动体4放置完成后，松开弹性部32，此时卡凸35能够对转动体4起到限位的作用，免去了转动体4上开设定位槽42的麻烦，且操作简单方便。
在一些实施例中，壳体3还包括连接板(图中未示意出)，连接板设在壳体3邻近转动体4的一端，卡凸35形成在连接板的朝向转动体4的一侧。具体地，壳体3的上端设有安装孔(图中未示意出)，连接板设在安装孔内，且连接板的底部与安装孔的底部相连，卡凸35形成在连接板的上端部的内周侧上，卡凸35与转动体4的上端面相抵，通过连接板可方便转动体4安装在壳体3内，提高了转动体4的安装效率，同时本实施例中，不需要将卡凸35安装在弹性部32上，可将转动体4放进腔室331后，将卡凸35通过连接板安装在安装孔即可。
在一些实施例中，支撑件1的外周侧设有沿上下方向延伸的限位槽11，通过销钉6的一端穿过壳体3且穿设在限位槽11内，从而通过销钉6和限位槽11的配合以限制支撑件1转动。具体地，如图2和图3，支撑件1的外周侧设有沿上下方向延伸的限位槽11，通过销钉6的一端穿过壳体3且穿设在限位槽11内，从而通过销钉6和凹槽11的配合以限制支撑件1转动，以便转动体4转动带动支撑件1沿上下方向移动。
在一些实施例中，壳体3远离支撑件1的一端和支撑件1远离壳体3的一端均设置有多个凸起部21。具体地，壳体3远离支撑件1的一端设置有终板2，壳体3的底部和终板2的顶部均设有多个凸起部21，凸起部21为锥型，通过多个凸起部21能够增加终板2和壳体3与人体椎骨连接初期的稳定性，待人体骨质生长并与人工椎体100的连接体完全连接后达到长期固定的效果。
在另外一个实施例中，人工椎体100还包括第一终板和第二终板(图中未示意出)，第一终板可拆卸地设在支撑件1远离壳体3的一端，第二终板可拆卸地设在壳体3远离支撑件1的一端，第一终板背离支撑件1的一端为第一端部，第二终板背离壳体3的一端为第二端部，第一端部和第二端部均设有多个凸起部21。具体地，在此实施例中，第一终板可通过紧固件(图中未示意出)固定在支撑件1的上端且第一终板的上端设有多个凸起部21，第二终板可通过紧固件(图中未示意出)固定在壳体3的下端且第二终板的下端设有多个凸起部21，从而可根据实际情况更换不同形状(矩形或圆形)的第一终板和第二终板，从而能够使该人工椎体能够适应于颈椎或胸腰椎等不同的位置，提高了人工椎体100的治疗效果。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的 方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本公开的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本公开中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。
在本公开中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本公开中，术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (11)

  1. 一种人工椎体，其特征在于，包括：
    壳体，所述壳体的内周面具有第一配合部；
    转动体，所述转动体可转动地设在所述壳体内，所述转动体的外周面具有第二配合部，所述第一配合部能够与所述第二配合部配合，以限制所述转动体仅能够顺时针或逆时针转动；
    支撑件，所述支撑件贯穿所述转动体且与所述转动体螺接，所述转动体相对于所述壳体可转动以带动所述支撑件沿所述转动体的轴向移动。
  2. 根据权利要求1所述的人工椎体，其特征在于，所述壳体包括弹性部，所述弹性部与所述转动体在所述转动体的径向方向上相对设置，所述第一配合部形成在所述弹性部的内侧面，以便所述弹性部能够带动所述第一配合部和所述第二配合部分离。
  3. 根据权利要求2所述的人工椎体，其特征在于，所述壳体具有基体和所述弹性部，所述基体具有腔室，所述转动体可转动地设在所述腔室内，所述基体邻近所述转动体的一端设有槽口，所述弹性部设在所述槽口内，所述弹性部沿所述壳体的周向延伸，所述弹性部的延伸方向的一端与所述壳体相连。
  4. 根据权利要求2或3所述的人工椎体，其特征在于，所述第二配合部包括多个棘齿，多个所述棘齿沿所述转动体的外周面间隔设置，所述第一配合部为凸起，所述凸起能够位于相邻两个所述棘齿之间，所述转动体沿顺时针或逆时针其中一个方向转动时，所述凸起能够从所述棘齿上滑过，且所述凸起能够限制所述转动体沿另一个相反方向转动。
  5. 根据权利要求2至4中任一项所述的人工椎体，其特征在于，还包括驱动件，所述驱动件穿设在所述弹性部内，能够驱动所述弹性部移动以使所述第一配合部与所述第二配合部分离。
  6. 根据权利要求5所述的人工椎体，其特征在于，所述弹性部上设有贯穿所述弹性部的通孔，所述驱动件通过螺纹配合在所述通孔内。
  7. 根据权利要求1至6中任一项所述的人工椎体，其特征在于，所述壳体设置有限位件，所述限位件能够与所述转动体配合以限制所述转动体沿所述转动体的轴向脱出所述壳体。
  8. 根据权利要求7所述的人工椎体，其特征在于，所述限位件为销轴，所述转动体的外周面设有沿其周向延伸的定位槽，所述销轴穿过所述壳体与所述定位槽配合，以便限制所述转动体沿所述转动体轴向移动。
  9. 根据权利要求7所述的人工椎体，其特征在于，所述限位件为卡凸，所述卡凸设置 于所述壳体邻近所述转动体的一端且沿所述转动体的径向向内延伸，所述卡凸与所述转动体远离所述壳体的一端相抵，以限制所述转动体沿所述转动体的轴向脱出所述壳体。
  10. 根据权利要求1至9中任一项所述的人工椎体，其特征在于，所述壳体远离所述支撑件的一端和所述支撑件远离所述壳体的一端均设置有多个凸起部。
  11. 根据权利要求1至10中任一项所述的人工椎体，其特征在于，所述人工椎体还包括第一终板和第二终板，所述第一终板可拆卸地设在所述支撑件远离所述壳体的一端，所述第二终板可拆卸地设在所述壳体远离所述支撑件的一端，所述第一终板背离所述支撑件的一端为第一端部，所述第二终板背离所述壳体的一端为第二端部，所述第一端部和所述第二端部均设有多个凸起部。
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CN114392016A (zh) * 2021-12-31 2022-04-26 北京纳通医疗科技控股有限公司 人工椎体

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