CN113317859B - Percutaneous screw longitudinal rod system - Google Patents
Percutaneous screw longitudinal rod system Download PDFInfo
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- CN113317859B CN113317859B CN202110663941.3A CN202110663941A CN113317859B CN 113317859 B CN113317859 B CN 113317859B CN 202110663941 A CN202110663941 A CN 202110663941A CN 113317859 B CN113317859 B CN 113317859B
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- screw
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- seat structure
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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
- A61B17/7002—Longitudinal elements, e.g. rods
-
- 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
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides a percutaneous screw longitudinal rod system, and relates to the technical field of medical instruments. The percutaneous screw longitudinal rod system comprises a conical pedicle screw and a rod head, wherein a movable seat structure is movably connected to the side surface of the conical pedicle screw close to the top, a limiting seat structure is arranged on the side surface of the conical pedicle screw and above the movable seat structure, and a groove is formed in the top end of the conical pedicle screw; the side of the club head is provided with marked lines, and the side of the club head is provided with bulges corresponding to the grooves. Through being provided with recess and protruding structure, insert it into and block in the time of the use, just can be fine carry out restriction stability (can restrict the rotation and the removal of excellent head) to the stick head, through the marking that sets up, the other end of the definite stick head that can be convenient and the position of awl bow radical screw and sliding seat structure.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a percutaneous screw longitudinal rod system.
Background
The percutaneous screw longitudinal rod system mainly comprises a conical pedicle screw and a rod head structure, the conical pedicle screw is connected to a bone, then the rod head structure is used for adjusting and correcting, and fixing and limiting are carried out, so that the percutaneous screw longitudinal rod system is a common bone correcting and repairing tool in the existing orthopedic surgery.
The existing percutaneous screw longitudinal rod system has the following defects when in use:
(1) the pre-bent rod can roll after being put in, and needs to be continuously adjusted to meet the physiological curvature;
(2) the rod floats towards the head end and the tail end, and the head end and the tail end need to be repeatedly exposed to determine whether the reserved length is proper or not;
(3) and not as desirable to maintain stability of the rod tool.
In order to solve the problems, the invention provides a novel structure of a percutaneous screw longitudinal rod system, which is more convenient for an orthopedist to use.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a percutaneous screw longitudinal rod system, which solves the problem that the existing percutaneous screw longitudinal rod system is inconvenient to use.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the percutaneous screw longitudinal rod system comprises a conical pedicle screw and a rod head, wherein a movable seat structure is movably connected to the side surface of the conical pedicle screw close to the top, a limiting seat structure is arranged on the side surface of the conical pedicle screw and above the movable seat structure, and a groove is formed in the top end of the conical pedicle screw;
the side of the club head is provided with marked lines, and the side of the club head is provided with bulges corresponding to the grooves.
Preferably, the sliding seat structure is established including the cover and is established the annular seat in awl bow root screw side, the first spacing limit of top fixedly connected with of annular seat, the spacing limit of top fixedly connected with second on first spacing limit, the medial surface on the spacing limit of second is provided with the tooth, the top fixedly connected with top platform on the spacing limit of second.
Preferably, the number of the first limit edges, the second limit edges and the top platform is two, and the first limit edges, the second limit edges and the top platform are symmetrically distributed.
Preferably, the bottom end of the conical pedicle screw is provided with a taper angle, and the side surface of the conical pedicle screw is provided with a thread line.
Preferably, the thread line comprises a lower section thread and an upper section thread, the tail end of the lower section thread is smoothly connected with the head end of the upper section thread, and the pitch of the lower section thread is 1.5-3 times that of the upper section thread.
Preferably, the limiting seat structure comprises an annular limiting lug, a limiting ring and an elastic limiting structure, the annular limiting lug is fixedly connected to the side face of the conical bow root screw, an arc-shaped opening is formed in the inner side of the limiting ring and sleeved on the outer side of the annular limiting lug, and the elastic limiting structure is arranged at the lower end of the limiting ring.
Preferably, the annular limiting convex block is a hollow annular shell, the inner side surface of the hollow annular shell is a cylindrical surface, and the inner side surface of the annular limiting convex block is close to the top and is fixedly connected with the side surface of the pedicle screw.
Preferably, the number of the elastic limit structures is provided with a plurality of elastic limit structures, and the plurality of elastic limit structures are arranged in an annular array.
Preferably, the elastic limiting structure comprises a through hole, a guide cylinder is closely matched and connected to the inner side wall of the through hole and close to the bottom end of the through hole, a thin rod is arranged inside the guide cylinder, a stopper is fixedly connected to the bottom end of the thin rod, an end block is arranged at the top end of the thin rod, a spring is arranged inside the through hole and above the end block, and a threaded plug is connected to the inside of the through hole and above the spring in a threaded manner.
The working principle is as follows: when the limiting ring 302 is pulled upwards, the bottom end of the annular limiting lug 301 deforms inwards to form an arch, and the limiting ring 302 cannot be taken down;
and finally, the protrusion 7 at the bottom of the club head 5 is inserted into the groove 4, so that the club head 5 can be stably limited, and then the adjustment is carried out according to the marked line 6, so that the use is very convenient.
(III) advantageous effects
The invention provides a percutaneous screw longitudinal rod system. The method has the following beneficial effects:
1. according to the invention, the groove and the protrusion structure are arranged, so that the club head can be well limited and stabilized (the rotation and the movement of the club head can be limited) when being inserted and clamped in use, the positions of the other end of the club head, the pedicle screw and the movable seat structure can be conveniently determined through the arranged marking line, repeated adjustment is not needed, and the club head can be conveniently realized according to the marking line.
2. According to the invention, the limiting seat structure is arranged, the limiting ring can be conveniently pressed in and out but cannot be pulled out, the movable seat structure is inserted and then inserted into the limiting ring, the position of the movable seat structure can be limited, and the installation is very convenient.
3. According to the invention, the elastic limiting structure is arranged, and the bottom end of the stopper is abutted against the movable seat structure, so that the stability of the movable seat structure is controlled.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is a schematic top view of the present invention;
FIG. 5 is a schematic cross-sectional view of the present invention;
FIG. 6 is an enlarged view taken at A of FIG. 5 in accordance with the present invention;
fig. 7 is a schematic sectional view of the elastic limiting structure of the present invention.
Wherein, 1, the pedicle screw of awl; 2. a movable seat structure; 201. an annular seat; 202. a first limit edge; 203. a second limit edge; 204. teeth; 205. a top stage; 3. a limiting seat structure; 301. an annular limit bump; 302. a limiting ring; 303. an elastic limit structure; 3031. a through hole; 3032. a guide cylinder; 3033. a thin rod; 3034. a stopper; 3035. a spring; 3036. a thread block; 4. a groove; 5. a rod head; 6. marking lines; 7. a protrusion; 8. a thread path.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 7, an embodiment of the present invention provides a percutaneous screw rod straightening system, which includes a pedicle screw 1 and a rod head 5, wherein a movable seat structure 2 is movably connected to a side surface of the pedicle screw 1 near the top, the movable seat structure 2 can rotate relative to the pedicle screw 1, a limit seat structure 3 is disposed on the side surface of the pedicle screw 1 and above the movable seat structure 2, the movable seat structure 2 further has a certain amount of up-and-down movement under the limit of the limit seat structure 3, and a groove 4 is disposed at the top end of the pedicle screw 1;
the side of club head 5 is provided with marking 6, and marking 6's effect is that convenience of customers observes and adjusts reserved length, and the side of club head 5 is provided with the arch 7 that corresponds with recess 4, and arch 7 can inject the inside of recess 4, and the polygon can be adopted to recess 4 and protruding 7's shape.
The movable seat structure 2 comprises an annular seat 201 sleeved on the side face of the pedicle screw 1, a first limit 202 fixedly connected to the top of the annular seat 201, a second limit 203 fixedly connected to the top of the first limit 202, teeth 204 arranged on the inner side face of the second limit 203, a top platform 205 fixedly connected to the top of the second limit 203, the first limit 202, the second limit 203 and the top platform 205 are both provided with two numbers, the two first limit 202, the second limit 203 and the top platform 205 are symmetrically distributed, and the rod head 5 is located between the two first limit 202, the second limit 203 and the top platform 205.
The bottom of the pedicle screw of awl 1 is provided with the cone angle, and the side of pedicle screw of awl 1 is provided with the threadline 8, and the threadline 8 includes hypomere screw thread and upper segment screw thread, hypomere screw thread tail end and the head end smooth connection of upper segment screw thread, and the pitch of hypomere screw thread makes 1.5-3 times of upper segment screw thread pitch, can guarantee the stability of pedicle screw of awl 1 installation.
The limiting seat structure 3 comprises an annular limiting bump 301, a limiting ring 302 and an elastic limiting structure 303, wherein the annular limiting bump 301 is fixedly connected to the side surface of the pedicle screw 1, the inner side of the limiting ring 302 is provided with an arc-shaped opening, the arc-shaped opening is sleeved on the outer side of the annular limiting bump 301, the limiting ring 302 is convenient to install, the elastic limiting structure 303 is arranged at the lower end of the limiting ring 302, the annular limiting bump 301 is a hollow annular shell, the inner side surface of the hollow annular shell is a cylindrical surface, deformation can be generated when the outer surface of the annular limiting bump 301 is pressed, the inner side surface of the annular limiting bump 301 is close to the top and is fixedly connected with the side surface of the pedicle screw 1, if the outer side surface is pressed from the bottom, the outer side surface of the annular limiting bump 301 forms an arch shape, the limiting ring 302 cannot be taken out, but if the annular limiting bump is pushed downwards from the top, the limiting ring 302 can be conveniently installed, the number of the elastic limiting structures 303 is provided with a plurality of, a plurality of elastic limiting structures 303 are arranged in an annular array, each elastic limiting structure 303 comprises a through hole 3031, the inner side wall of each through hole 3031 is closely matched and connected with a guide cylinder 3032 close to the bottom end, a thin rod 3033 is arranged inside each guide cylinder 3032, a blocking head 3034 is fixedly connected to the bottom end of each thin rod 3033, an end block is arranged at the top end of each thin rod 3033, a spring 3035 is arranged inside each through hole 3031 and above the end block, a threaded blocking block 3036 is connected inside each through hole 3031 and above the spring 3035 in a threaded manner, the bottom end of the blocking head 3034 is supported above the movable seat structure 2, and the stability of the movable seat structure 2 can be guaranteed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. Excellent system is indulged to percutaneous screw, including awl pedicle of vertebral arch screw (1), stick head (5), its characterized in that: a movable seat structure (2) is movably connected to the side surface of the conical pedicle screw (1) close to the top, a limiting seat structure (3) is arranged on the side surface of the conical pedicle screw (1) and above the movable seat structure (2), and a groove (4) is formed in the top end of the conical pedicle screw (1);
the side surface of the club head (5) is provided with a marked line (6), and the side surface of the club head (5) is provided with a bulge (7) corresponding to the groove (4);
the limiting seat structure (3) comprises an annular limiting convex block (301), a limiting ring (302) and an elastic limiting structure (303), the annular limiting convex block (301) is fixedly connected to the side surface of the pedicle screw (1), an arc-shaped opening is formed in the inner side of the limiting ring (302) and sleeved on the outer side of the annular limiting convex block (301), and the elastic limiting structure (303) is arranged at the lower end of the limiting ring (302);
annular spacing lug (301) are hollow annular casing, and the medial surface of hollow annular casing sets up to the face of cylinder, when guaranteeing annular spacing lug (301) surface pressurized, can produce deformation, the medial surface of annular spacing lug (301) just is close to the side fixed connection of top and awl bow root screw (1), if from the bottom pressurized, the lateral surface that will make annular spacing lug (301) forms an arch, can't take out spacing ring (302), but if follow the top and impel downwards, can be convenient install spacing ring (302) and go up.
2. The percutaneous screw longitudinal rod system according to claim 1, wherein: the movable seat structure (2) is established annular seat (201) including the cover in the side of awl bow root screw (1), the first spacing limit of top fixedly connected with (202) of annular seat (201), the spacing limit of top fixedly connected with second (203) of first spacing limit (202), the medial surface of the spacing limit of second (203) is provided with tooth (204), the top fixedly connected with top platform (205) of the spacing limit of second (203).
3. The percutaneous screw longitudinal rod system according to claim 2, wherein: the number of the first limit edges (202), the second limit edges (203) and the top platform (205) is two, and the first limit edges (202), the second limit edges (203) and the top platform (205) are symmetrically distributed.
4. The percutaneous screw longitudinal rod system according to claim 1, wherein: the bottom end of the conical-arch-root screw (1) is provided with a cone angle, and the side surface of the conical-arch-root screw (1) is provided with a thread line (8).
5. The percutaneous screw longitudinal rod system according to claim 4, wherein: the thread line (8) comprises a lower section thread and an upper section thread, the tail end of the lower section thread is smoothly connected with the head end of the upper section thread, and the thread pitch of the lower section thread is 1.5-3 times that of the upper section thread.
6. The percutaneous screw longitudinal rod system according to claim 1, wherein: the number of the elastic limiting structures (303) is provided with a plurality of elastic limiting structures, and the elastic limiting structures (303) are arranged in an annular array.
7. The percutaneous screw longitudinal rod system according to claim 1 or 6, wherein: elasticity limit structure (303) include through-hole (3031), the inside wall of through-hole (3031) and be close to the bottom and closely cooperate and be connected with guide cylinder (3032), the inside of guide cylinder (3032) is provided with thin pole (3033), the bottom fixedly connected with of thin pole (3033) keeps off head (3034), the top of thin pole (3033) is provided with the end block, the inside of through-hole (3031) and the top that is located the end block are provided with spring (3035), the inside of through-hole (3031) and the top threaded connection who is located spring (3035) have screw thread stop block (3036).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110663941.3A CN113317859B (en) | 2021-06-16 | 2021-06-16 | Percutaneous screw longitudinal rod system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110663941.3A CN113317859B (en) | 2021-06-16 | 2021-06-16 | Percutaneous screw longitudinal rod system |
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| CN113317859A CN113317859A (en) | 2021-08-31 |
| CN113317859B true CN113317859B (en) | 2022-09-27 |
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| WO2001047425A1 (en) * | 1999-12-24 | 2001-07-05 | Societe De Fabrication De Materiel Orthopedique (Sofamor) | Pedicle screws with inclined channels to hold support rods |
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| CN211705129U (en) * | 2019-12-20 | 2020-10-20 | 江苏陇盛光学薄膜材料有限公司 | Clamping type shifting machine for lifting appliance |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001047425A1 (en) * | 1999-12-24 | 2001-07-05 | Societe De Fabrication De Materiel Orthopedique (Sofamor) | Pedicle screws with inclined channels to hold support rods |
| CN208507531U (en) * | 2018-07-08 | 2019-02-15 | 普禄达（厦门）电子科技有限公司 | A kind of novel silica gel keypad with lock function |
| CN209723478U (en) * | 2019-02-25 | 2019-12-03 | 广东创璟新材料科技有限公司 | A kind of buckle-type PVC heat-insulation wall plate |
| CN109998646A (en) * | 2019-04-28 | 2019-07-12 | 青岛大学附属医院 | A kind of backbone scope hollow arbor braid lock puncture positioning device |
| CN211705129U (en) * | 2019-12-20 | 2020-10-20 | 江苏陇盛光学薄膜材料有限公司 | Clamping type shifting machine for lifting appliance |
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