CN111329568B - Flexible combined fixing device for spine - Google Patents
Flexible combined fixing device for spine Download PDFInfo
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- CN111329568B CN111329568B CN202010257227.XA CN202010257227A CN111329568B CN 111329568 B CN111329568 B CN 111329568B CN 202010257227 A CN202010257227 A CN 202010257227A CN 111329568 B CN111329568 B CN 111329568B
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- fixing
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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
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
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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
- A61B17/84—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
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
- A61B17/862—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the periphery of the screw head
-
- 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)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention relates to a flexible combined fixing device for a spine. According to the invention, each fixing nail can be connected with two connecting rods, so that the connection mode between the adjacent fixing nails is very stable, and the connection among a plurality of fixing nails is relatively flexible, so that the fixing nail is more suitable for the actual recovery after the spinal surgery. The two connecting rods are connected with the fixing nails, but certain elasticity and flexibility exist between the two connections, and if a spaced connection mode is selected, namely a mode that the three fixing nails are connected by the two connecting rods, certain flexibility can be ensured; if the mode that two adjacent staple are connected by two connecting rods is selected, the steadiness of connecting can be increased, the intensity demand of each connecting rod is reduced to can relax to the material selection and the volume etc. of connecting rod.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a flexible combined fixing device for a spine.
Background
Scoliosis, commonly referred to as scoliosis, is a three-dimensional deformity of the spine that includes sequence abnormalities in the coronal, sagittal, and axial positions. The normal human spine should be a straight line as viewed from the back, and the torso is bilaterally symmetrical. A severe scoliosis may affect the growth and development of infants and teenagers, deform the body, and severely affect the cardio-pulmonary function and even involve the spinal cord, resulting in paralysis. Mild scoliosis can be observed and severe ones require surgical treatment. Scoliosis is a common disease which endangers adolescents and children, and the key is early discovery and early treatment. The heavier scoliosis requires corrective surgery, which requires fixation of the spine.
CN202942196U discloses a flexible fixing device for spine, which comprises a fine adjustment knob, a flexible section, a positioning upper screw, a connecting cross bar and a locking screw. Two locking screws in the same form are main body parts of the spine flexible fixing device, screw rods are arranged at the lower parts of the locking screws, threads are arranged on the screw rods, screw head heads are arranged at the upper ends of the locking screws, transverse through holes are formed in the screw head ends, a connecting cross rod is arranged by penetrating through the through holes in the two locking screws, the middle section of the connecting cross rod is a flexible section, and fine adjustment knobs are arranged at the two ends of the connecting cross rod. Can provide long-term durability and stability for spinal flexible fixation.
The existing spinal fixation devices are all rigid fixed connection, but in actual use, because the connection between spinal bone blocks needs to have certain elasticity, the pure rigid connection is slow in recovery on one hand, and discomfort of a patient is strong in actual use on the other hand.
Disclosure of Invention
In view of the above, in order to solve the above problems, there is provided a flexible combined fixing device for a spine, comprising fixing nails and connecting rods:
the number of the fixing nails and the number of the connecting rods are multiple, each fixing nail comprises a nail body and a nail head, the nail body is used for being nailed into the vertebra, and the nail head is used for fixing the connecting rods; the connecting rod comprises a head end and a tail end, and the shapes of the head end and the tail end are consistent; the two fixing nails can be fixedly connected with the head end and the tail end of one connecting rod, and each nail head can fix at most two connecting rods at one time;
the connecting rods can be independently locked at the positions of the two connecting rods connected on each fixing nail, and the positions of the two connecting rods connected on the single fixing nail are flexibly connected.
The nail body is in a nail shape, and the peripheral wall of the nail body is provided with threads which can be screwed into the vertebra; one end of the nail body is provided with a nail head which comprises a nail head seat, a first fixing part and a second fixing part; the nail head seat and the nail body are integrally formed, and the axial diameter of the nail head seat is larger than that of the nail body; the nail head seat is provided with a first fixing part, the first fixing part is two first lugs which protrude from the edge of the nail head seat along the axial direction of the nail head seat, a connecting rod can be inserted between the two first lugs in a way of being perpendicular to the axial direction of the fixing nail, namely, the distance between the two first lugs is greater than the diameter of the connecting rod; the threads are arranged between the two first lugs and can be screwed into the first fixing blocks along the axial direction of the fixing nails, and the first fixing blocks are used for pressing the connecting rods inserted between the first lugs.
The top of the first fixing part is provided with a second fixing part, the second fixing part consists of two second ears which are arranged in the same direction as the first ears, each second ear is connected to one first ear, and the tops of the two second ears are fixedly connected, so that the tops of the two second ears form a complete circular ring; the connecting rod can be inserted between the two second ears; a second fixing block and a third fixing block can be screwed between the two second lugs, and the second fixing block and the third fixing block are used for pressing the connecting rod inserted between the second lugs;
an I-shaped connecting block is arranged between the second lug and the first lug, and the section of the I-shaped connecting block is I-shaped; the first ear is fixedly connected with the bottom edge of the I-shaped block, the accommodating cavity capable of accommodating the top part of the I-shaped block is arranged at the bottom part of the second ear, and the size of the accommodating cavity can be adjusted by adjusting a screw at the top part of the second ear, so that the I-shaped block and the second ear can be connected in a loosening manner, and the mutual movement range of the I-shaped block and the second ear can be adjusted.
An elastic material is disposed between the first ear and the second ear and the elastic material encases the block, thereby providing flexibility in the relative movement of the second ear and the first ear.
The other end of the connecting rod inserted between the first lug and the second lug is connected with different fixing nails respectively, so that the three fixing nails are connected by the two connecting rods.
The same staple is connected respectively to the other end of the connecting rod that inserts between the first ear and the second ear to make and be connected by two connecting rods between two staples, increase stability.
According to the invention, each fixing nail can be connected with two connecting rods, so that the connection mode between the adjacent fixing nails is very stable, and the connection among a plurality of fixing nails is relatively flexible, so that the fixing nail is more suitable for the recovery after the actual spine operation.
The two connecting rods are connected with the fixing nails, but certain elasticity and flexibility exist between the two connections, and if a spaced connection mode is selected, namely a mode that the three fixing nails are connected by the two connecting rods, certain flexibility can be ensured; if select two adjacent staple by the mode that two connecting rods are connected, then can increase the steadiness of connecting, reduce the intensity demand of each connecting rod to can all relax to the material selection and the volume etc. of connecting rod, and not tie between the staple of different groups, make the postoperative resume more comfortable.
Drawings
The accompanying drawings, which are included to provide further understanding of the disclosed subject matter, are incorporated in and constitute a part of this specification. The drawings illustrate the implementations of the disclosed subject matter and, together with the detailed description, serve to explain the principles of implementations of the disclosed subject matter. No attempt is made to show structural details of the disclosed subject matter in more detail than is necessary for a fundamental understanding of the disclosed subject matter and its various modes of practice.
FIG. 1 is a schematic view of a staple and connecting rod of the present invention;
FIG. 2 is a schematic view of the head of the staple;
fig. 3 is a schematic view of different connection modes of the fixing nail and the connecting rod of the invention.
Detailed Description
The advantages, features and methods of accomplishing the same will become apparent from the drawings and the detailed description that follows.
Example 1:
a flexible combined fixing device of a spine comprises fixing nails 1 and connecting rods 2:
the number of the fixing nails 1 and the number of the connecting rods 2 are multiple, each fixing nail 1 comprises a nail body 3 and a nail head 4, the nail body 3 is used for being nailed into the vertebra, and the nail head 4 is used for fixing the connecting rods 2; the connecting rod 2 comprises a head end and a tail end, and the shapes of the head end and the tail end are consistent; the two fixing nails 1 can be fixedly connected with the head end and the tail end of one connecting rod 2, and each nail head 4 can fix at most two connecting rods 2 at one time;
the positions of the two connecting rods 2 connected on each fixing nail 1 can be independently used for locking the connecting rods 2, and the positions of the two connecting rods 2 connected on the single fixing nail 1 are flexibly connected.
The nail body 3 is nail-shaped, and the peripheral wall is provided with threads which can be screwed into the vertebra; one end of the nail body 3 is provided with a nail head 4, and the nail head 4 comprises a nail head seat 41, a first fixing part 42 and a second fixing part 43; the nail head seat 41 and the nail body 3 are integrally formed, and the axial diameter of the nail head seat is larger than that of the nail body 3; the nail head seat 41 is provided with first fixing parts 42, the first fixing parts 42 are two first ears 44 which protrude from the edge of the nail head seat 41 along the axial direction of the nail head seat 41, the two first ears 44 can be inserted into the connecting rod 2 perpendicular to the axial direction of the fixing nail 1, namely, the distance between the two first ears 44 is greater than the diameter of the connecting rod 2; threads are arranged between the two first lugs 44, and can be screwed into a first fixing block 45 along the axial direction of the fixing nail 1, and the first fixing block 45 is used for pressing the connecting rod 2 inserted between the first lugs 44.
The second fixing part 43 is arranged on the top of the first fixing part 42, the second fixing part 43 is composed of two second ears 46 which are arranged in the same direction as the first ears 44, each second ear 46 is connected to one first ear 44, and the tops of the two second ears 46 are fixedly connected, so that the tops of the two second ears 46 form a complete circle; the connecting rod 2 can be inserted between the two second ears 46; a second fixing block 47 and a third fixing block 48 can be screwed between the two second lugs 46, and the second fixing block 47 and the third fixing block 48 are used for pressing the connecting rod 2 inserted between the second lugs 46;
an I-shaped connecting block 49 is arranged between the second lug 46 and the first lug 44, and the section of the I-shaped connecting block 49 is I-shaped; the first ear 44 is fixedly connected to the bottom edge of the i-block, the bottom of the second ear 46 is provided with a receiving cavity for receiving the top of the i-block, and the size of the receiving cavity can be adjusted by adjusting the screw 50 at the top of the second ear 46, so that the i-block and the second ear 46 can be connected loosely and the extent of their mutual movement can be adjusted.
An elastic material is disposed between the first ear 44 and the second ear 46 and encases the block, thereby providing resiliency to the movement of the second ear 46 and the first ear 44 relative to each other.
The other ends of the connecting rods 2 inserted between the first lugs 44 and the connecting rods 2 inserted between the second lugs 46 are respectively connected with different fixing nails 1, so that the three fixing nails 1 are connected by the two connecting rods 2.
The other ends of the connecting rods 2 inserted between the first lugs 44 and the connecting rods 2 inserted between the second lugs 46 are respectively connected with the same fixing nails 1, so that the two fixing nails 1 are connected by the two connecting rods 2, and the stability is improved.
Example 2:
this embodiment introduces a simple method of use:
when the fixing nail is used, the hole is drilled in the vertebra, then the fixing nail is placed in the hole, and other operations before the fixing nail is placed in the hole are not described again;
after the fixing nails are placed in the fixing holes, the fixing nails and the vertebra are stably connected, then a connecting rod is inserted between two adjacent fixing nails, and the connecting rod is fixed by screwing in the first fixing block;
then the second fixed block is screwed in, the second connecting rod is inserted, the third fixed block is screwed in, the other ends of the connecting rods 2 inserted between the first lugs 44 and the second lugs 46 are respectively connected with different fixing nails 1, so that the three fixing nails 1 are connected with each spinal bone by the way of connecting the two connecting rods 2, and therefore the adjacent spinal bones are stably and fixedly connected, and the adjacent three spinal bones can slightly move to realize flexible connection, so that the connection flexibility is improved, and the fixing device is more suitable for actual use conditions and recovery conditions.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The utility model provides a flexible combined fixing device of backbone, includes staple (1) and connecting rod (2), its characterized in that:
the number of the fixing nails (1) and the number of the connecting rods (2) are multiple, each fixing nail (1) comprises a nail body (3) and a nail head (4), the nail body (3) is used for being nailed into the vertebra, and the nail head (4) is used for fixing the connecting rods (2); the connecting rod (2) comprises a head end and a tail end, and the head end and the tail end are consistent in shape; the two fixing nails (1) can be fixedly connected with the head end and the tail end of one connecting rod (2), and each nail head (4) can fix the two connecting rods (2) at one time;
the positions of the two connecting rods (2) connected on each fixing nail (1) can be independently used for locking the connecting rods (2), and the positions of the two connecting rods (2) connected on the single fixing nail (1) are flexibly connected;
the nail body (3) is in a nail shape, and the peripheral wall is provided with threads which can be screwed into the vertebra; one end of the nail body (3) is provided with a nail head (4), and the nail head (4) comprises a nail head seat (41), a first fixing part (42) and a second fixing part (43); the nail head seat (41) and the nail body (3) are integrally formed, and the axial diameter of the nail head seat is larger than that of the nail body (3); the nail head seat (41) is provided with a first fixing part (42), the first fixing part (42) comprises two first lugs (44) which protrude axially along the nail head seat (41) from the edge of the nail head seat (41), the connecting rod (2) can be inserted between the two first lugs (44) in a manner of being perpendicular to the axial direction of the fixing nail (1), namely, the distance between the two first lugs (44) is greater than the diameter of the connecting rod (2); threads are arranged between the two first lugs (44), the first fixing blocks (45) can be screwed in along the axial direction of the fixing nail (1), and the first fixing blocks (45) are used for pressing the connecting rods (2) inserted between the first lugs (44);
a second fixing part (43) is arranged at the top of the first fixing part (42), the second fixing part (43) consists of two second ears (46) which are arranged in the same direction as the first ears (44), each second ear (46) is connected to one first ear (44), and the tops of the two second ears (46) are fixedly connected, so that the tops of the two second ears (46) form a complete circular ring; the connecting rod (2) can be inserted between the two second ears (46); a second fixing block (47) and a third fixing block (48) can be screwed between the two second lugs (46), and the second fixing block (47) and the third fixing block (48) are used for pressing the connecting rod (2) inserted between the second lugs (46);
an I-shaped connecting block (49) is arranged between the second lug (46) and the first lug (44), and the section of the I-shaped connecting block (49) is I-shaped; the first ear (44) is fixedly connected with the bottom edge of the I-shaped block, the bottom of the second ear (46) is provided with a containing cavity capable of containing the top of the I-shaped block, and the size of the containing cavity can be adjusted by adjusting a screw (50) at the top of the second ear (46), so that the I-shaped block and the second ear (46) can be connected in a loose way, and the mutual moving range can be adjusted;
an elastic material is disposed between the first ear (44) and the second ear (46), and the elastic material encases the drum-shaped block, thereby providing elasticity for the second ear (46) and the first ear (44) to move relative to each other.
2. The flexible modular fixture of claim 1 wherein:
the other ends of the connecting rods (2) inserted between the first lugs (44) and the connecting rods (2) inserted between the second lugs (46) are respectively connected with different fixing nails (1), so that the three fixing nails (1) are connected by the two connecting rods (2).
3. A flexible modular fixture as claimed in claim 1 wherein:
the other end of the connecting rod (2) inserted between the first lug (44) and the other end of the connecting rod (2) inserted between the second lug (46) are respectively connected with the same fixing nail (1), so that the two fixing nails (1) are connected through the two connecting rods (2), and the stability is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010257227.XA CN111329568B (en) | 2020-04-03 | 2020-04-03 | Flexible combined fixing device for spine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010257227.XA CN111329568B (en) | 2020-04-03 | 2020-04-03 | Flexible combined fixing device for spine |
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| Publication Number | Publication Date |
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| CN111329568A CN111329568A (en) | 2020-06-26 |
| CN111329568B true CN111329568B (en) | 2023-04-11 |
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| CN202010257227.XA Active CN111329568B (en) | 2020-04-03 | 2020-04-03 | Flexible combined fixing device for spine |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101466319A (en) * | 2006-04-24 | 2009-06-24 | 华沙整形外科股份有限公司 | Connector apparatus |
| CN105078562A (en) * | 2015-03-13 | 2015-11-25 | 上海三友医疗器械有限公司 | Medical screw with connector |
| CN206044709U (en) * | 2016-02-02 | 2017-03-29 | 薛妹妹 | A kind of automatically reset pedicle nail |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040087952A1 (en) * | 2002-10-31 | 2004-05-06 | Amie Borgstrom | Universal polyaxial washer assemblies |
| US20040111088A1 (en) * | 2002-12-06 | 2004-06-10 | Picetti George D. | Multi-rod bone attachment member |
| CA2573649C (en) * | 2004-07-12 | 2012-04-10 | Synthes (U.S.A.) | Device for the dynamic fixation of bones |
| CN102488548B (en) * | 2011-11-30 | 2013-09-18 | 上海拓腾医疗器械有限公司 | Internal fixing device and internal fixing method of vertebral columns |
| US10238432B2 (en) * | 2017-02-10 | 2019-03-26 | Medos International Sàrl | Tandem rod connectors and related methods |
| CN109549696B (en) * | 2017-09-27 | 2024-03-22 | 上海三友医疗器械股份有限公司 | Adjustable double-groove spine internal fixation device and bone screw |
| CN109875669A (en) * | 2019-04-23 | 2019-06-14 | 天津正天医疗器械有限公司 | A kind of spinal fixation system |
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2020
- 2020-04-03 CN CN202010257227.XA patent/CN111329568B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101466319A (en) * | 2006-04-24 | 2009-06-24 | 华沙整形外科股份有限公司 | Connector apparatus |
| CN105078562A (en) * | 2015-03-13 | 2015-11-25 | 上海三友医疗器械有限公司 | Medical screw with connector |
| CN206044709U (en) * | 2016-02-02 | 2017-03-29 | 薛妹妹 | A kind of automatically reset pedicle nail |
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| CN111329568A (en) | 2020-06-26 |
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