CN114795599A - Medical titanium cage with adjustable length and use method - Google Patents

Medical titanium cage with adjustable length and use method Download PDF

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Publication number
CN114795599A
CN114795599A CN202210461150.7A CN202210461150A CN114795599A CN 114795599 A CN114795599 A CN 114795599A CN 202210461150 A CN202210461150 A CN 202210461150A CN 114795599 A CN114795599 A CN 114795599A
Authority
CN
China
Prior art keywords
sleeve
adjusting screw
titanium cage
stay bar
upper terminal
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.)
Pending
Application number
CN202210461150.7A
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Chinese (zh)
Inventor
刘刚
孙敬方
刘宾
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.)
Nanjing Sports Medicine Integration Rehabilitation Industry Research Institute Co ltd
Original Assignee
Nanjing Sports Medicine Integration Rehabilitation Industry Research Institute Co ltd
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Publication date
Application filed by Nanjing Sports Medicine Integration Rehabilitation Industry Research Institute Co ltd filed Critical Nanjing Sports Medicine Integration Rehabilitation Industry Research Institute Co ltd
Priority to CN202210461150.7A priority Critical patent/CN114795599A/en
Publication of CN114795599A publication Critical patent/CN114795599A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • 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
    • A61F2/442—Intervertebral or spinal discs, e.g. resilient
    • 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
    • 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
    • A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—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
    • 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

Abstract

The invention provides a medical titanium cage with adjustable length, which specifically comprises an upper terminal, a lower terminal, a sleeve, an adjusting screw, a support rod A and a support rod B; the inner wall of the upper terminal is arranged on the outer wall of the sleeve and can move in a telescopic mode along the axial direction of the sleeve; the inner side wall of the lower terminal is fixedly arranged at the bottom of the outer wall of the sleeve; two ends of the adjusting screw rod are movably arranged at two ends of the inner wall of the sleeve in the radial direction; one end of the stay bar A and one end of the stay bar B are connected and fixedly mounted at the top of the upper terminal, and the other ends of the stay bar A and the stay bar B are respectively and independently connected with the adjusting screw rod through the connecting piece. Meanwhile, the invention also provides a using method of the medical titanium cage with adjustable length, and the medical titanium cage has the characteristics of labor saving and self-locking through the mode that the upper end surface moves and the lower end surface is fixed, and in addition, has the function of adjusting length.

Description

Medical titanium cage with adjustable length and use method
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a medical titanium cage with adjustable length and a using method thereof.
Background
Modern medical treatment means for spinal diseases and wounds adopts artificial instruments to fuse vertebral bodies, the technology of vertebral body fusion is mature, and the mechanical structure of the vertebral bodies can be reconstructed. The fusion cage is mainly made of allogenic bone, ceramic, metal, high polymer material, carbon fiber, artificial composite material and the like, and titanium alloy and pure titanium are used as the manufacturing materials of the titanium cage in the prior art, so that the fusion cage has better tissue compatibility, clear imaging and reliable strength.
Currently, the length of a titanium cage is adjusted by threads in most clinical applications. The length of the titanium cage is adjusted by the aid of threads, the adjustment is slow, the length positioning is not accurate, clinical risks are increased, and postoperative recovery is affected.
Disclosure of Invention
The technical scheme is as follows: in order to solve the technical problem, the medical titanium cage with the adjustable length provided by the invention specifically comprises an upper terminal, a lower terminal, a sleeve, an adjusting screw rod, a support rod A and a support rod B; the inner wall of the upper terminal is sleeved on the outer wall of the sleeve and can move in a telescopic manner along the axial direction of the sleeve; the inner side wall of the lower terminal is fixedly sleeved at the bottom of the outer wall of the sleeve; two ends of the adjusting screw rod are movably arranged at two ends of the inner wall of the sleeve in the radial direction; one end of the stay bar A and one end of the stay bar B are connected and fixedly mounted at the top of the upper terminal, and the other ends of the stay bar A and the stay bar B are respectively and independently connected with the adjusting screw rod through the connecting piece.
As an improvement, the outer surfaces of the upper terminal, the lower terminal and the sleeve are respectively provided with a plurality of groups of through holes with hollow structures at intervals, wherein the through holes are at least one of triangular, long strip, circular, rhombic and irregular edges.
As an improvement, the device also comprises a slide block A and a slide block B; the sliding blocks A and B are respectively and independently in threaded connection with the adjusting screw rods, and the end portions of the sliding blocks A and B are respectively and independently connected with the supporting rods A and B in a hinged mode.
As the improvement, the upper terminal comprises a connecting shaft, and the connecting shaft is fixedly arranged at the top of the upper terminal and faces the direction of the sleeve and is used for fixedly arranging the end parts of the support rod A and the support rod B.
As an improvement, the device also comprises a positioning channel; the positioning channel comprises two groups of symmetrical channels, each group of channels is formed by connecting a plurality of groups of adjacent slotted holes, the positioning channels are symmetrically arranged on the upper terminal and the lower terminal respectively, the positioning channel of the upper terminal is of a structure with two closed ends, and the positioning channel of the lower terminal is of a structure with an open upper end and a closed lower end.
As an improvement, the adjustable positioning sleeve further comprises two rows of positioning slotted holes, each row is formed by arranging spaced penetrating slotted holes in the vertical direction, the positioning slotted holes are arranged on the sleeve, and two ends of the adjusting screw rod are movably arranged in two symmetrical slotted holes of the two rows of positioning slotted holes through fixing pieces and can rotate along the slotted holes.
As an improvement, the adjusting screw rod is bounded by the middle point of the screw rod, opposite thread structures are respectively arranged at two ends of the adjusting screw rod, the adjusting screw rod comprises a left-handed thread structure and a right-handed thread structure, and the sliding block A and the sliding block B are independently in threaded connection with the left-handed thread structure and the right-handed thread structure.
As an improvement, the stay bar A and the stay bar B are both elastic structural bars.
As another specific embodiment of the present invention, the present invention further provides a use method of the medical titanium cage, which specifically comprises the following steps:
assembling a medical titanium cage;
firstly, mounting an adjusting screw in a pair of slotted holes on a sleeve, then sleeving and mounting an upper terminal and the sleeve, then fixedly mounting the top ends of a stay bar A and a stay bar B on an upper terminal connecting shaft, and respectively and independently hinging the other ends of the stay bar A and the stay bar B with a sliding block A and a sliding block B; finally, the lower terminal is sleeved at the bottom of the sleeve to complete assembly;
(II) adjusting the length of the titanium cage to be proper;
according to the actual required length of the titanium cage, the adjusting screw rod is rotated to drive the sliding block A and the sliding block B to move along the left-handed thread structure and the right-handed thread structure arranged on the adjusting screw rod, so that the stable adjustment of the triangular stable structure is completed until the proper length of the titanium cage is obtained, and the adjusting screw rod is stopped rotating to lock the titanium cage.
Has the advantages that: the titanium cage provided by the invention has the characteristics of labor saving and self-locking through the mode that the upper end surface moves and the lower end surface is fixed, and in addition, has the functions of opening and length adjustment. Specifically, (1) set up the triangle-shaped stable structure that adjusting screw, two sets of elastic construction's vaulting pole are constituteed, and the both sides that use the intermediate point to be the center on the cooperation adjusting screw are provided with the anti-thread structure that rings, and through the screw thread removal between the screw thread slider that adopts the vaulting pole bottom and the adjusting screw, length adjustable length has been realized, simultaneously, also can be through the threaded connection between slider and the adjusting screw, can auto-lock, prevents to go up terminal and sleeve and slide within a definite time. (2) The size and the elastic structure of the adjusting support rods are arranged, the length between the upper end cover and the sleeve can be adjusted, and the two groups of support rods are combined to form the elastic structure and used for simulating the elastic function of the human lumbar intervertebral disc.
Drawings
FIG. 1 is a schematic cross-sectional structure view of a medical titanium cage with adjustable length according to the present invention.
FIG. 2 is a schematic diagram of the external structure of the medical titanium cage with adjustable length, which is perpendicular to the direction of the adjusting screw.
FIG. 3 is a schematic view of the external structure of the medical titanium cage with adjustable length along the direction of the adjusting screw rod.
FIG. 4 is a schematic view of the structure of the present invention when two struts are spread apart.
FIG. 5 is a schematic view of the adjustable screw rod of the present invention installed in the positioning slot and the positioning slot.
Fig. 6 is a schematic structural view of the mounting position of the connecting shaft of the present invention.
In the figure: the terminal comprises an upper terminal 1, a lower terminal 2, a sleeve 3, an adjusting screw rod 4, a support rod A5, a support rod B6, a slide block A7, a slide block B8, a connecting shaft 9, a through hole 10, a positioning groove hole 11 and a positioning groove channel 12.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The medical titanium cage with the adjustable length specifically comprises an upper terminal 1, a lower terminal 2, a sleeve 3, an adjusting screw rod 4, a support rod A5 and a support rod B6; the inner wall of the upper terminal 1 is arranged on the outer wall of the sleeve 3 and can move in a telescopic mode along the axial direction of the sleeve 3; the inner side wall of the lower terminal 2 is fixedly arranged at the bottom of the outer wall of the sleeve 3; two ends of the adjusting screw rod 4 are movably arranged at two ends of the inner wall of the sleeve 3 along the radial direction; one end of the stay bar A5 and one end of the stay bar B6 are connected and fixedly mounted at the top of the upper terminal 1, and the other ends are respectively and independently connected with the adjusting screw rod 4 through connecting pieces.
The brace A and the brace B are of elastic structure rod-shaped structures, and the movable upper terminal 1 and the movable lower terminal 2 have adjustable elastic modulus and can simulate the elastic characteristics of the spine and the intervertebral disc.
The outer surfaces of the upper terminal 1, the lower terminal 2 and the sleeve 3 are respectively provided with a plurality of groups of through holes 10 with hollow structures at intervals, wherein the through holes 10 are at least one of triangular, long strip-shaped, circular, rhombic and irregular edges.
The device also comprises a slide block A7 and a slide block B8; the sliding blocks A7 and B8 are respectively and independently in threaded connection with the adjusting screw rod 4, and the end parts of the sliding blocks are respectively and independently connected with the support rods A5 and B6 in a hinged mode.
The upper terminal 1 comprises a connecting shaft 9 which is fixedly arranged at the top of the upper terminal 1 and faces the direction of the sleeve 3 and is used for fixedly arranging the end parts of the support rod A5 and the support rod B6.
The positioning slot channel 12 is characterized by further comprising two groups of symmetrical slot channels, each group of slot channels is formed by connecting a plurality of groups of adjacent slotted holes, the positioning slot channels 12 are symmetrically mounted on the upper terminal 1 and the lower terminal 2 respectively, the positioning slot channels 12 of the upper terminal 1 are of a structure with two closed ends, and the positioning slot channels 12 of the lower terminal 2 are of a structure with an open upper end and a closed lower end.
The adjustable positioning device is characterized by further comprising two rows of positioning slotted holes 11, wherein each row is formed by arranging spaced through slotted holes in the vertical direction, the positioning slotted holes 11 are installed on the sleeve 3, and two ends of the adjusting screw rod 4 are movably installed in two symmetrical slotted holes of the two rows of positioning slotted holes 11 through fixing pieces and can rotate along the slotted holes. The adjusting screw rod 4 is bounded by the middle point of the screw rod, and opposite thread structures are respectively arranged at two ends of the adjusting screw rod, wherein the adjusting screw rod comprises a left-handed thread structure and a right-handed thread structure, and the sliding block A7 and the sliding block B8 are independently in threaded connection with the left-handed thread structure and the right-handed thread structure. Wherein the stay bar A5 and the stay bar B6 are elastic structural bars.
The medical titanium cage with the adjustable length is sleeved with the sleeve 3 through the lower terminal 2 and fixed through the threaded hole, and the upper terminal 2 is of a movable structure and can slide up and down after being sleeved with the upper end of the sleeve 3. The adjusting screw rod 4 is rotatably connected with the sleeve 3 and can freely rotate around a slotted hole of the sleeve 3. The sliding block A7 and the sliding block B8 are in threaded connection with the adjusting screw rod, reverse threads are arranged at two ends of the adjusting screw rod 4, and the sliding block can be controlled to move in a translation mode through rotation of the adjusting screw rod 4.
Further, the rotation can be realized to vaulting pole A one end and slider A's tip are articulated, and rotation can be realized to vaulting pole B one end and slider B's tip are articulated, and vaulting pole A's the other end, vaulting pole B's the other end are connected, and articulate with connecting axle 9 of the inside movable terminal of movable upper terminal 1.
As a specific implementation mode of the invention, the use method of the medical titanium cage with the adjustable length comprises the following specific steps:
assembling a medical titanium cage;
firstly, installing an adjusting screw rod 4 in a pair of slotted holes on a sleeve 3, then installing an upper terminal 1 and the sleeve 3 in a sleeved mode, then fixedly installing the top ends of a stay bar A5 and a stay bar B6 on a connecting shaft of the upper terminal 1, and respectively and independently hinging the other ends of the stay bar A5 and the stay bar B6 with a sliding block A7 and a sliding block B8; finally, the lower terminal 2 is sleeved at the bottom of the sleeve 3 to complete assembly;
(II) adjusting the length of the titanium cage to be proper;
according to the actual required length of the titanium cage, the sliding block A7 and the sliding block B8 are driven to move along the left-handed thread structure and the right-handed thread structure arranged on the adjusting screw rod (4) by rotating the adjusting screw rod 4, the stable adjustment of the triangular stable structure is completed until the proper length of the titanium cage is obtained, and the adjusting screw rod 4 is stopped to rotate for locking.
Screwing adjusting screw 4 can realize that the screw rod rotates, because adjusting screw 4 midpoint both ends are equipped with reverse thread structure, specifically are left thread structure, right thread structure, therefore can adjust the distance between slider A and slider B to the length of the triangle that control vaulting pole A, and vaulting pole B and adjusting screw constitute jointly, thereby realize length adjustment. Meanwhile, the screw thread and the sliding block of the adjusting screw rod can be self-locked through screw thread screwing regulation, and further the upper terminal and the sleeve are prevented from sliding.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (9)

1. A medical titanium cage with adjustable length is characterized in that: comprises an upper terminal (1), a lower terminal (2), a sleeve (3), an adjusting screw (4), a stay bar A (5) and a stay bar B (6); the inner wall of the upper terminal (1) is sleeved on the outer wall of the sleeve (3) and can move in a telescopic manner along the axial direction of the sleeve (3); the inner side wall of the lower terminal (2) is fixedly sleeved at the bottom of the outer wall of the sleeve (3); two ends of the adjusting screw rod (4) are movably arranged at two ends of the inner wall of the sleeve (3) along the radial direction; one end of the support rod A (5) and one end of the support rod B (6) are connected and fixedly mounted at the top of the upper terminal (1), and the other ends of the support rods are respectively and independently connected with the adjusting screw rod (4) through connecting pieces.
2. The medical titanium cage with the adjustable length as claimed in claim 1, wherein: the outer surfaces of the upper terminal (1), the lower terminal (2) and the sleeve (3) are respectively provided with a plurality of groups of through holes (10) with hollow structures at intervals, wherein the through holes (10) are at least one of triangular, long strip-shaped, circular, rhombic and irregular edges.
3. The medical titanium cage with the adjustable length as claimed in claim 1, wherein: the device also comprises a slide block A (7) and a slide block B (8); the sliding blocks A (7) and B (8) are respectively and independently in threaded connection with the adjusting screw rods (4), and the end parts of the sliding blocks A (7) and B (8) are respectively and independently connected with the support rods A (5) and B (6) in a hinged mode.
4. The medical titanium cage with the adjustable length as claimed in claim 1, wherein: the upper terminal (1) comprises a connecting shaft (9), the connecting shaft is fixedly mounted at the top of the upper terminal (1) and faces the direction of the sleeve (3), and the connecting shaft is used for fixedly mounting the end parts of the support rod A (5) and the support rod B (6).
5. The medical titanium cage with the adjustable length as claimed in claim 1, wherein: still include positioning channel way (12), positioning channel way (12) include the channel of two sets of symmetries, and each group channel way links up by the multiunit adjacent slotted hole and constitutes, and positioning channel way (12) are installed on upper terminal (1), lower terminal (2) respectively symmetrically, and wherein upper terminal's (1) positioning channel way (12) are both ends closed structure, and lower terminal's (2) positioning channel way (12) are for the upper end to open, lower extreme closed structure.
6. The medical titanium cage with the adjustable length as claimed in claim 5, wherein: the adjustable positioning device is characterized by further comprising two rows of positioning slotted holes (11), wherein each row is formed by arranging spaced through slotted holes in the vertical direction, the positioning slotted holes (11) are installed on the sleeve (3), and two ends of the adjusting screw rod (4) are movably installed in two symmetrical slotted holes of the two rows of positioning slotted holes (11) through fixing pieces and can rotate along the slotted holes.
7. The medical titanium cage with the adjustable length as claimed in claim 1, wherein: adjusting screw (4) use the mid point of screw rod as the border, both ends are provided with opposite helicitic texture respectively, including left-handed helicitic texture and right-handed helicitic texture, wherein slider A (7), slider B (8) independent threaded connection are on left-handed helicitic texture and right-handed helicitic texture.
8. The medical titanium cage with the adjustable length as claimed in claim 1, wherein: wherein, the stay bar A (5) and the stay bar B (6) are elastic structure bars.
9. A method for using the medical titanium cage with the adjustable length according to any one of claims 1 to 8, wherein the method comprises the following steps: the method comprises the following specific steps:
assembling a medical titanium cage;
firstly, installing an adjusting screw (4) in a pair of slotted holes in a sleeve (3), then sleeving an upper terminal (1) with the sleeve (3), then fixedly installing the top ends of a stay bar A (5) and a stay bar B (6) on a connecting shaft of the upper terminal (1), and respectively and independently hinging the other ends of the stay bar A (5) and the stay bar B (6) with a sliding block A (7) and a sliding block B (8); finally, the lower terminal (2) is sleeved at the bottom of the sleeve (3) to complete assembly;
(II) adjusting the length of the titanium cage to be proper;
according to the actual required length of the titanium cage, the slide block A (7) and the slide block B (8) are driven to move along the left-handed thread structure and the right-handed thread structure arranged on the adjusting screw rod (4) by rotating the adjusting screw rod (4), the stable adjustment of the triangular stable structure is completed until the proper length of the titanium cage is obtained, and the adjusting screw rod (4) is stopped to rotate to lock.
CN202210461150.7A 2022-04-28 2022-04-28 Medical titanium cage with adjustable length and use method Pending CN114795599A (en)

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Application Number Priority Date Filing Date Title
CN202210461150.7A CN114795599A (en) 2022-04-28 2022-04-28 Medical titanium cage with adjustable length and use method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210461150.7A CN114795599A (en) 2022-04-28 2022-04-28 Medical titanium cage with adjustable length and use method

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CN114795599A true CN114795599A (en) 2022-07-29

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US20040049271A1 (en) * 2001-08-03 2004-03-11 Lutz Biedermann Spacer having a variable axial length
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