CN112006766A - Hook rod connecting assembly and internal fixing system - Google Patents
Hook rod connecting assembly and internal fixing system Download PDFInfo
- Publication number
- CN112006766A CN112006766A CN202010900252.5A CN202010900252A CN112006766A CN 112006766 A CN112006766 A CN 112006766A CN 202010900252 A CN202010900252 A CN 202010900252A CN 112006766 A CN112006766 A CN 112006766A
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- CN
- China
- Prior art keywords
- hook
- rod
- mounting
- connecting rod
- joint
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- 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.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/704—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other the longitudinal element passing through a ball-joint in the screw head
Abstract
The invention provides a hook rod connecting component and an internal fixing system, comprising: the bone hook comprises a hook body and a hook part bearing piece, the top surface of the hook part bearing piece is a spherical surface protruding upwards, a connecting rod is arranged on the top surface of the hook part bearing piece, and a rod body bearing part is arranged on the connecting rod; one end of the connecting rod is provided with an installation joint, the installation joint is provided with an installation hole, the top surface of the installation joint is an upward convex spherical surface, and the bottom surface of the installation joint is provided with an installation part ball socket; the bottom surface of the limiting part is provided with a limiting part ball socket, and the limiting part is provided with a limiting connecting part; the connecting rod passes the mounting hole, and the body of rod bearing portion is connected with spacing connecting portion. The bone hook and the connecting rod have higher degree of freedom, can treat diseases with different physical signs, can effectively fix vertebral plates, are simple to operate, and improve the operation efficiency.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a hook rod connecting assembly and an internal fixing system.
Background
At present, a nail-rod-hook internal fixation system which is commonly used in clinical treatment of spinal degeneration, trauma, tumor and orthopedic surgery mainly comprises a pedicle screw, a bone hook and a connecting rod structure. In the existing nail-rod-hook internal fixing system, after the bone hook is connected with the connecting rod, the relative position of the bone hook and the connecting rod cannot be adjusted, so that the requirements of patients with various physical signs cannot be met.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the technical problem underlying the present invention is to provide a hook and rod connecting assembly and an internal fixing system.
To achieve the above and other related objects, the present invention provides a hook bar connecting assembly comprising:
the bone hook comprises a hook body and a hook part bearing piece arranged on the top surface of the hook body, wherein the top surface of the hook part bearing piece is an upward convex spherical surface, a connecting rod is arranged on the top surface of the hook part bearing piece, and a rod body bearing part is arranged on the connecting rod;
the connecting rod is provided with an installation joint at one end, an installation hole is formed in the top surface of the installation joint and penetrates through the bottom surface of the installation joint, and the central axis of the installation hole is perpendicular to the central axis of the connecting rod; the top surface of the mounting joint is an upward convex spherical surface, and the bottom surface of the mounting joint is provided with a mounting part ball socket for placing the top of the hook part bearing piece; the central axis of the top surface of the mounting joint is collinear with the central axis of the ball socket of the mounting part;
the bottom surface of the limiting part is provided with a limiting part ball socket for embedding the top of the mounting joint, and the limiting part is provided with a limiting connecting part;
the connecting rod passes through the mounting hole, and the rod body bearing part is connected with the limiting connecting part.
Preferably, the limiting connection part is an internal threaded hole arranged on the limiting part; the rod body bearing part is an external thread part arranged on the connecting rod.
Preferably, the diameter of the ball socket of the limiting part is equal to the diameter of the top surface of the mounting joint.
Preferably, the diameter of the mounting portion socket is equal to the diameter of the top surface of the hook receiver.
Preferably, the locating part includes bottom support piece and sets up in the connector of bottom support piece top, the size of the lateral surface of connector is less than bottom support piece's lateral surface size.
Preferably, the hook rod connecting assembly further comprises: the clamping pliers comprise two clamping handles which are movably connected, and each clamping handle is provided with a convex part; the hook body is provided with two opposite sunken parts, and each sunken part is used for the protruding part to insert.
Preferably, the hook rod connecting assembly further comprises: the locking wrench is characterized in that an inner hole is formed in the head end of the locking wrench, and the inner hole is of a hexagonal structure; the outer side surface of the top of the mounting joint is of a hexagonal structure; the inner hole is used for inserting the top of the installation joint.
The invention also relates to an internal fixation system comprising: the screw structure and the hook rod connecting component;
the screw structure includes: nail seats and pedicle screws;
the top of the nail seat is provided with an installation groove, the installation groove is sunken downwards from the top of the nail seat and penetrates through the nail seat along the radial direction, a locking thread part is arranged on the inner side surface of the installation groove, and a through hole communicated with the installation groove is arranged on the bottom surface of the nail seat;
the pedicle screw comprises a screw rod and a screw head arranged at the upper end of the screw rod, the screw rod penetrates through the through hole, and the screw head is positioned in the mounting groove;
one end of the connecting rod, which is far away from the installation joint, is arranged in the installation groove.
As described above, the hook rod connecting assembly and the internal fixing system of the present invention have the following advantageous effects:
in the hook rod connecting assembly, one end of the connecting rod is provided with the mounting joint, the bone hook, the connecting rod and the limiting piece are sequentially arranged from bottom to top, the connecting rod of the bone hook penetrates through the mounting hole of the mounting joint, and the rod body bearing part of the connecting rod is connected with the limiting connecting part of the limiting piece; the top of the mounting joint is placed in a limiting part ball socket on the bottom surface of the limiting part, and the top of the hook part bearing piece is placed in a mounting part ball socket on the bottom surface of the mounting joint; then the connective bar sets up erection joint's one end and bone hook and can realize relative rotation, then has higher degree of freedom between bone hook and the connective bar, utilizes the degree of freedom between bone hook and the connective bar to treat the disease of different signs, can effectively fix the vertebral plate, easy operation improves operation efficiency.
Drawings
Fig. 1 is a perspective view of the internal fixation system of the present embodiment.
Fig. 2 is a schematic perspective view of the internal fixation system of the present embodiment.
Fig. 3 is a schematic cross-sectional view of the internal fixation system of the present embodiment.
Fig. 4 is a schematic perspective view of a bone hook of the hook rod connecting assembly of the present embodiment.
Fig. 5 is a perspective view of the top surface of the connecting rod of the hook rod connecting assembly of the present embodiment.
Fig. 6 is a perspective view of the bottom surface of the connecting rod of the hook rod connecting assembly of the present embodiment.
Fig. 7 is a schematic perspective view illustrating a bottom surface of a limiting member of the hook rod connecting assembly according to the present embodiment.
Fig. 8 is a perspective view of the screw structure of the internal fixation system of the present embodiment.
Fig. 9 is a schematic perspective view of the locking wrench of the present embodiment.
Fig. 10 is a perspective view of the clamping forceps of this embodiment.
Description of the reference numerals
100 bone hook
110 hook body
111 concave part
120 hook receiving piece
Top surface of 121-part receiving member
130 connecting rod
131 bar body bearing part
132 rivet welding flange
200 connecting rod
210 installation joint
211 mounting hole
212 top surface of installation joint
213 mounting part ball socket
300 position limiter
301 bottom support
302 connecting head
310 ball socket with limiting part
320 spacing connecting part
400 holding clamp
410 grip handle
411 convex part
412 main handle
413 extending handle
500 locking spanner
510 inner hole
610 nail seat
611 mounting groove
612 locking screw thread part
613 through hole
620 pedicle screw
621 screw rod
622 head of screw
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to the attached drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1 to 10, the hook bar connecting assembly of the present embodiment includes:
the bone hook 100 comprises a hook body 110 and a hook part bearing piece 120 arranged on the top surface of the hook body 110, wherein the top surface 121 of the hook part bearing piece 120 is a spherical surface protruding upwards, a connecting rod 130 is arranged on the top surface 121 of the hook part bearing piece 120, and a rod body bearing part 131 is arranged on the connecting rod 130;
the connecting rod 200 is provided with an installation joint 210 at one end of the connecting rod 200, an installation hole 211 is formed in the top surface 212 of the installation joint 210, the installation hole 211 penetrates through the bottom surface of the installation joint 210, and the central axis of the installation hole 211 is perpendicular to the central axis of the connecting rod 200; the top surface 212 of the mounting joint 210 is a spherical surface protruding upward, and the bottom surface of the mounting joint 210 is provided with a mounting portion ball socket 213 into which the top of the hook receiving member 120 is inserted; the central axis of the top surface 212 of the mounting joint 210 is collinear with the central axis of the mounting socket 213;
a limiting part ball socket 310 for placing the top of the mounting joint 210 into is arranged on the bottom surface of the limiting part 300, and a limiting connecting part 320 is arranged on the limiting part 300;
the connecting rod 130 passes through the mounting hole 211, and the rod body receiving part 131 is connected with the limit connecting part 320.
In the hook rod connecting assembly, one end of a connecting rod 200 is provided with a mounting joint 210, a bone hook 100, the connecting rod 200 and a limiting part 300 are sequentially arranged from bottom to top, a connecting rod 130 of the bone hook 100 penetrates through a mounting hole 211 of the mounting joint 210, and a rod body bearing part 131 of the connecting rod 130 is connected with a limiting connecting part 320 of the limiting part 300; the top of the mounting joint 210 is seated in the limiting portion socket 310 on the bottom surface of the limiting member 300, and the top of the hook receiving member 120 is seated in the mounting portion socket 213 on the bottom surface of the mounting joint 210; then the connective bar 200 sets up the one end of erection joint 210 and can realize relative rotation with bone hook 100, then has higher degree of freedom between bone hook 100 and the connective bar 200, utilizes the degree of freedom between bone hook 100 and the connective bar 200 can treat the disease of different signs, can effectively fix the vertebral plate, easy operation improves operation efficiency.
The top of the mounting joint 210 is in spherical contact with the ball socket 310 of the limiting part, the top of the hook part bearing 120 is in spherical contact with the ball socket 213 of the mounting part, and the central axis of the top surface 212 of the mounting joint 210 is collinear with the central axis of the ball socket 213 of the mounting part, so that the bone hook 100 can rotate around the central axis of the ball socket 213 of the mounting part; the limiting member 300 is connected to the connecting rod 130, and the limiting member 300 contacts the mounting joint 210, so that the limiting member 300 can limit the axial movement of the mounting joint 210.
The limiting connection part 320 is an internal threaded hole arranged on the limiting part 300; the rod receiving portion 131 is an external thread portion provided on the connecting rod 130. The internal thread hole is matched with the external thread part, so that the limit connecting part 320 and the rod body bearing part 131 are stably connected. After the stopper 300 is locked, the axial movement of the mount joint 210 can be restricted.
The diameter of the retaining portion socket 310 is the same as the diameter of the top surface 212 of the mounting joint 210. The diameter of the mounting portion socket 213 is equal to the diameter of the top surface 121 of the hook receiver 120. This configuration facilitates the rotation of the limiting member 300 together with the bone hook 100 around the central axis of the mounting portion socket 213 after the limiting member 300 is locked.
The position-limiting member 300 includes a bottom supporting member 301 and a connecting head 302 disposed above the bottom supporting member 301, and a size of an outer side surface of the connecting head 302 is smaller than a size of an outer side surface of the bottom supporting member 301. This structure facilitates the installation of the position limiting member 300, and enables the position limiting member 300 to stably support the installation joint 210.
The hook rod coupling assembling still includes: the clamping forceps 400 comprises two movably connected clamping handles 410, and a convex part 411 is arranged on each clamping handle 410; the hook body 110 is provided with two oppositely disposed recesses 111, and each recess 111 is inserted by the protrusion 411. The concave portion 111 and the convex portion 411 are fitted to each other. The convex portion 411 of the clamping handle 410 of the clamping forceps 400 can be embedded into the corresponding concave portion 111 of the bone hook 100, and the clamping forceps 400 can stably clamp the bone hook 100.
Each grip shank 410 includes a main shank portion 412 and an extension shank portion 413 connected to the main shank portion 412, and the main shank portion 412 and the extension shank portion 413 form an obtuse angle. The grip handle 410 is constructed to avoid obscuring the surgical field of view. Projection 411 is provided on extension stem 413.
The hook rod coupling assembling still includes: the locking wrench 500 is characterized in that an inner hole 510 is formed in the head end of the locking wrench 500, and the inner hole 510 is of a hexagonal structure; the outer side surface of the top of the limiting member 300 is of a hexagonal structure; the inner bore 510 is for the top of the field joint 210 to be inserted. The structure of the inner hole 510 is matched with the structure of the top of the limiting member 300. The locking wrench 500 is constructed to facilitate the installation of the stopper 300.
In this embodiment, after the limiting member 300 is connected to the bone hook 100, the rivet welding flange 132 is disposed on the top end of the connecting rod 130 of the bone hook 100, and the rivet welding flange 132 rivets the path of the limiting member 300 moving upward out of the connecting rod 130. The rivet welding flange 132 prevents the limiting member 300 from moving out of the top end of the connecting rod 130 of the bone hook 100, and the limiting member 300 cannot be removed, so as to prevent the limiting member 300 from falling off during the operation.
The internal fixation system of this embodiment includes: a screw structure and hook bar connection assembly;
the screw structure includes: a nail holder 610 and a pedicle screw 620;
the top of the nail seat 610 is provided with a mounting groove 611, the mounting groove 611 is recessed downwards from the top of the nail seat 610 and radially penetrates through the nail seat 610, the inner side surface of the mounting groove 611 is provided with a locking thread part 612, and the bottom surface of the nail seat 610 is provided with a through hole 613 communicated with the mounting groove 611;
the pedicle screw 620 comprises a screw rod 621 and a screw head 622 arranged at the upper end of the screw rod 621, the screw rod 621 passes through the through hole 613, and the screw head 622 is positioned in the mounting groove 611;
an end of the connection rod 200 remote from the mounting joint 210 is disposed in the mounting groove 611.
During operation, the required pedicle screws 620 are firstly drilled, the bone hooks 100 are directly held by the clamping forceps 400, the vertebral plates of a patient are hooked by the bone hooks 100, the connecting rod 200 is placed in the mounting grooves 611 of the screw seats 610, the titanium rod is locked by the screw plugs matched with the pedicle screws 620, finally the limiting parts 300 on the bone hooks 100 are locked by the locking wrenches 500, the mounting of the internal fixing system on one side can be completed, the internal fixing system on the opposite side is mounted in the same step, and the subsequent ending stage of the operation can be started.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. A hook rod connection assembly, comprising:
the bone hook (100) comprises a hook body (110) and a hook part bearing piece (120) arranged on the top surface of the hook body (110), the top surface (121) of the hook part bearing piece (120) is a spherical surface protruding upwards, a connecting rod (130) is arranged on the top surface (121) of the hook part bearing piece (120), and a rod body bearing part (131) is arranged on the connecting rod (130);
the connecting rod (200), wherein one end of the connecting rod (200) is provided with an installation joint (210), the top surface (212) of the installation joint (210) is provided with an installation hole (211), the installation hole (211) penetrates through the bottom surface of the installation joint (210), and the central axis of the installation hole (211) is perpendicular to the central axis of the connecting rod (200); the top surface (212) of the mounting joint (210) is a spherical surface protruding upwards, and the bottom surface of the mounting joint (210) is provided with a mounting part ball socket (213) for placing the top part of the hook part bearing piece (120); the central axis of the top surface (212) of the mounting joint (210) is collinear with the central axis of the mounting socket (213);
the bottom surface of the limiting piece (300) is provided with a limiting part ball socket (310) for the top of the mounting joint (210) to be embedded into, and the limiting piece (300) is provided with a limiting connecting part (320);
the connecting rod (130) penetrates through the mounting hole (211), and the rod body bearing part (131) is connected with the limiting connecting part (320).
2. The hook bar connection assembly of claim 1, wherein: the limiting connecting part (320) is an internal threaded hole arranged on the limiting part (300); the rod body bearing part (131) is an external thread part arranged on the connecting rod (130).
3. The hook bar connection assembly of claim 1, wherein: the diameter of the limiting part ball socket (310) is equal to that of the top surface (212) of the mounting joint (210).
4. The hook bar connection assembly of claim 1, wherein: the diameter of the mounting portion socket (213) is equal to the diameter of the top surface (121) of the hook receiving member (120).
5. The hook bar connection assembly of claim 1, wherein: the locating part (300) comprises a bottom support part (301) and a connector (302) arranged above the bottom support part (301), and the size of the outer side face of the connector (302) is smaller than that of the outer side face of the bottom support part (301).
6. A hook and rod connection assembly according to any one of claims 1 to 5, further comprising: the clamping forceps (400) comprise two clamping handles (410) which are movably connected, and each clamping handle (410) is provided with a convex part (411); the hook body (110) is provided with two opposite concave parts (111), and each concave part (111) is used for the insertion of the convex part (411).
7. The hook bar connection assembly of claim 6, further comprising: the locking wrench (500), the head end of the locking wrench (500) is provided with an inner hole (510), and the inner hole (510) is of a hexagonal structure; the outer side surface of the top of the mounting joint (210) is of a hexagonal structure;
the inner bore (510) is for insertion of the top of the installation joint (210).
8. An internal fixation system, comprising: a screw construction and hook and rod connection assembly according to any one of claims 1 to 7;
the screw structure includes: a nail seat (610) and a pedicle screw (620);
the top of the nail seat (610) is provided with a mounting groove (611), the mounting groove (611) is recessed downwards from the top of the nail seat (610) and penetrates through the nail seat (610) along the radial direction, the inner side surface of the mounting groove (611) is provided with a locking threaded part (612), and the bottom surface of the nail seat (610) is provided with a through hole (613) communicated with the mounting groove (611);
the pedicle screw (620) comprises a screw rod (621) and a screw head (622) arranged at the upper end of the screw rod (621), the screw rod (621) passes through the through hole (613), and the screw head (622) is positioned in the mounting groove (611);
one end of the connecting rod (200) far away from the installation joint (210) is arranged in the installation groove (611).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010900252.5A CN112006766A (en) | 2020-08-31 | 2020-08-31 | Hook rod connecting assembly and internal fixing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010900252.5A CN112006766A (en) | 2020-08-31 | 2020-08-31 | Hook rod connecting assembly and internal fixing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112006766A true CN112006766A (en) | 2020-12-01 |
Family
ID=73515253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010900252.5A Pending CN112006766A (en) | 2020-08-31 | 2020-08-31 | Hook rod connecting assembly and internal fixing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112006766A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114404010A (en) * | 2021-12-23 | 2022-04-29 | 山东师范大学 | Adjustable vertebral lamina hook internal fixation device for lumbar isthmus fissure |
-
2020
- 2020-08-31 CN CN202010900252.5A patent/CN112006766A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114404010A (en) * | 2021-12-23 | 2022-04-29 | 山东师范大学 | Adjustable vertebral lamina hook internal fixation device for lumbar isthmus fissure |
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Inventor after: Li Feng Inventor after: Liu Mingyan Inventor after: Liu Xing Inventor before: Li Feng Inventor before: Liu Mingyan Inventor before: Liu Xing |