CN106037915A - Screw nut upwards screwing clamp sleeve type screw - Google Patents
Screw nut upwards screwing clamp sleeve type screw Download PDFInfo
- Publication number
- CN106037915A CN106037915A CN201610316971.6A CN201610316971A CN106037915A CN 106037915 A CN106037915 A CN 106037915A CN 201610316971 A CN201610316971 A CN 201610316971A CN 106037915 A CN106037915 A CN 106037915A
- Authority
- CN
- China
- Prior art keywords
- screw
- back seat
- nut
- screw back
- root
- 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.)
- Granted
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Classifications
-
- 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
Abstract
The invention relates to a screw nut upwards screwing clamp sleeve type screw, which belongs to the technical field of a medical appliance, and aims at solving the problems of operation complexity, long surgery time and great surgery difficulty in the surgery process in the prior art. The screw nut upwards screwing clamp sleeve type screw comprises an outer connecting rod, a screw back seat, a screw nut and a screw root screw, wherein the screw back seat is of an integral U-shaped structure; the upper part of the screw back seat is of a conical structure with the appearance dimension gradually becoming small from top to bottom; the lower part of the screw back seat is of a ball-shaped structure; the upper part of the conical structure is provided with a cylindrical groove perpendicular to the axial line of the screw back seat; the inner surface of the ball-shaped structure is a ball surface; the outer connecting rod is matched with the cylindrical groove; a ball head arranged at the upper part of the screw root screw is matched with the ball-shaped structure of the screw back seat; the screw nut is connected with the outer surface of the screw back seat through screw threads; the conversion from movable connection to fixed connection is realized between the outer connecting rod and the screw back seat by screwing the screw nut in the screw back seat; and the conversion from movable connection to fixed connection is realized between the screw root screw and the screw back seat by screwing the screw nut in the screw back seat.
Description
Technical field
The invention belongs to technical field of medical instruments, be specifically related to rotating cutting ferrule type screw on a kind of nut.
Background technology
At present, carry out clinically generally using nail to be attached during fracture operation, multiaxis nail bag of the prior art
Include screw root rivet nut, back seat and nut, need first screw root rivet nut to be screwed in operation process to execute art position, raw according to patient
Reason curvature adjusts the putting position of connecting rod, uses instrument locking nut the most again；Due to must be first by screw in prior art
Root rivet nut and back seat assemble and screw in human body again, the two before locking can relative motion within the specific limits, can be to spiral shell in operation
The screw-in of nail root rivet nut interferes；Nut must finally be installed and for ensureing that the required length screwed in of locking effect has one simultaneously
Fixed requirement, complex operation during operation, time-consuming, operating time can be extended and increase operating difficulty.
Summary of the invention
It is an object of the invention to propose rotating cutting ferrule type screw on a kind of nut, when solving the operation that prior art exists
The problem that complex operation, operating time length and operating difficulty are big.
For achieving the above object, on the nut of the present invention, rotating cutting ferrule type screw includes external connection bar, screw back seat, spiral shell
Female and screw root is followed closely；
Described screw back seat is integral type U-shape structure, and top is the pyramidal structure that overall dimensions tapers into from top to bottom,
Bottom is spherical structure, and described pyramidal structure top has the cylinder shape groove being perpendicular to screw back seat axis, described spherical junctions
Structure inner surface is sphere；
Described outer link and described cylinder shape groove coordinate, and described screw root nails on the bulb part in portion and described screw
The spherical structure of back seat coordinates, and described nut and described screw back seat outer surface thread connect；External connection bar and screw back seat
Between realize being movably attached to the conversion of fixing connection, screw root nail and screw back seat by nut screwing on screw back seat
Between realize being movably attached to the conversion of fixing connection by nut screwing on screw back seat.
Described cylinder shape groove inwall is uniformly distributed the rectangular channel being parallel to cylinder shape groove end face, described external connection bar
Outer surface has uniform cannelure, described cannelure and described rectangular channel and coordinates.
Described spherical structure inner surface has inner groove, the uniform cannelure of bulb part of described screw root nail, described ring
The inner groove of shape groove and described spherical structure inner surface coordinates.
Described screw root nail bulb portions end has Flos Mume notch, and the afterbody of described screw root nail has notch.
The screw back seat that the invention have the benefit that on the nut of the present invention in rotating cutting ferrule type screw has elasticity,
Can deform according to job demand, nut is before surgery already installed on screw back seat outer surface, and external connection bar is performed the operation
Before be arranged in screw back seat, only need to first screw in screw root during operation and follow closely in the corresponding position of human body, then by operation consent assemble
The afterbody bulb part of good screw back seat press-in screw root nail, is rotated down the certain position of nut arrival and can complete screw
Fixing, easy to operate during operation, save operating time, reduce operating difficulty, alleviate patient suffering, improve procedure efficiency.
Accompanying drawing explanation
Fig. 1 is that on the nut of the present invention, front overall structure schematic diagram installed by rotating cutting ferrule type screw；
Fig. 2 be on the nut of the present invention rotating cutting ferrule type screw install after overall structure schematic diagram；
Fig. 3 is rotating cutting ferrule type screw peripheral connecting rod isometric view on the nut of the present invention；
Fig. 4 is screw back seat isometric view in rotating cutting ferrule type screw on the nut of the present invention；
Fig. 5 is nut isometric view in rotating cutting ferrule type screw on the nut of the present invention；
Fig. 6 is that on the nut of the present invention, in rotating cutting ferrule type screw, screw root follows closely isometric view；
Wherein: 1, external connection bar, 2, screw back seat, 201, pyramidal structure, 202, spherical structure, 3, nut, 4, screw
Root is followed closely, and 401, bulb part.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the present invention are described further.
Seeing accompanying drawing 1 and accompanying drawing 2, on the nut of the present invention, rotating cutting ferrule type screw includes external connection bar 1, screw back seat
2, nut 3 and screw root nail 4；Screw back seat 2 has elasticity, is externally connected to nut 3, along with the different screw-in situations of nut 3
Screw back seat 2 does corresponding deformation, can make screw back seat 2 internally crimp by rotating up nut 3, arrive certain
Till appropriate location, can make screw back seat 2 that restorative deformation occurs by being rotated down nut 3, gradually restore to the original state；Outside connects
It is internal that extension bar 1 is positioned at screw back seat 2, during operation can relative accommodation, put appearance according to what patient's condition determined external connection bar 1
State, then external connection bar 1 is affixed with screw back seat 2；It is internal that the bulb part 401 of screw root nail 4 is positioned at screw back seat 2, hands
Can be with relative motion during art, after determining relative position, screw root nail 4 is affixed with screw back seat 2.
Seeing accompanying drawing 3, accompanying drawing 4, accompanying drawing 5 and accompanying drawing 6, described screw back seat 2 has elasticity, and top is inverted cone-shaped structure
201, bottom is spherical structure 202；Inverted cone-shaped structure 201 portion of external has screw thread, and there is cylinder shape groove inside, also has all
The rectangular channel of even distribution, spherical structure 202 has inner groove, and spherical structure 202 portion inner surface is also sphere；Screw root nail 4
Bulb part 401 be positioned at the inside of spherical structure 202 of screw back seat 2 bottom, and internal sphere-contact, at screw back seat 2
Internally crimp is flexibly connected to screw back seat 2 before certain position with screw root nail 4, internally extrudes at screw back seat 2
After being deformed to certain position, to follow closely 4 affixed for screw back seat 2 and screw root；The taper knot on top during described screw back seat 2 naturalness
The tapering of structure 201 can ensure that the bulb part 401 of screw root nail 4 can be installed in the spherical structure 202 of screw back seat 2 just
Portion, and the pyramidal structure 201 of external connection bar 1 and screw back seat 2 is flexibly connected.
Described screw root is followed closely 4 bulb parts 401 and is had equally distributed cannelure, in time contacting with screw back seat 2
Increase contact surface, make connection with firmly；Screw root is followed closely 4 bulb parts 401 and is had Flos Mume notch, lays operation work when being used for performing the operation
Tool；The afterbody of screw root nail 4 has notch and screws in space for increasing, and is easier to screw in human body during operation.
Described external connection bar 1 outer surface has uniform cannelure, its cannelure rectangle corresponding with screw back seat 2
Groove coordinates, and external connection bar 1 is positioned at inside the cylinder shape groove of screw back seat 2, and before screw back seat 2 deforms, outside connects
Extension bar 1 is flexibly connected with screw back seat 2, and after screw back seat 2 deforms, external connection bar 1 is affixed with screw back seat 2；Whole knot
Structure is attached with other screw by external connection bar 1, completes to fix skeleton.
Described nut 3 is threadeded with screw back seat 2, and nut 3 is threaded onto the outer surface of screw back seat 2, by rotation
Turn nut 3 makes screw back seat 2 deform, and rotates up nut 3 and can make screw back seat 2 internally crimp, arrives certain
Appropriate location till, now external connection bar 1, screw back seat 2, nut 3 and screw root nail 4 are all relatively fixed, and are rotated down
Nut 3 can make screw back seat 2 that restorative deformation occurs, and gradually restores to the original state, now screw back seat 2 respectively with external connection bar 1
With screw root nail 4 flexible connection；Owing to screw back seat 2 has elasticity, nut 3 is installed when screw back seat 2 outer surface, Ke Yixian
Extrusion screw back seat 2 lower spherical structure 202, then installs nut 3.
The work process of the present invention is: on the nut of the present invention, the screw back seat 2 in rotating cutting ferrule type screw has elasticity
Can deform according to job demand, nut 3 before surgery already installed on screw back seat 2 outer surface, external connection bar 1 hands
Preoperative it is arranged in screw back seat 2, only need to first screw in screw root nail 4 during operation in the corresponding position of human body, then by operation consent
The screw back seat 2 assembled is pressed into the afterbody spherical structure 202 of screw root nail 4, rotates up nut and arrives certain position i.e.
Screw fixing of the present invention can be completed, thus can solve complex operation time-consuming asking during operation present in prior art
Topic, saves operating time, reduces operating difficulty, alleviates patient suffering, improves procedure efficiency.
During postoperative removable screw, only need to be rotated down nut 3, owing to screw back seat 2 has elasticity, screw back seat 2 bottom
Spherical structure 202 will open reinstatement automatically, so can complete screw root nail 4 and separate with screw back seat 2, then take
Go out the dismounting that screw root nail 4 can complete the screw of the present invention.
Claims (4)
1. rotating cutting ferrule type screw on nut, follows closely including external connection bar (1), screw back seat (2), nut (3) and screw root
(4)；It is characterized in that, described screw back seat (2) is integral type U-shape structure, and top is that overall dimensions tapers into from top to bottom
Pyramidal structure (201), bottom is spherical structure (202), and described pyramidal structure (201) top has and is perpendicular to screw back seat
(2) cylinder shape groove of axis, described spherical structure (202) inner surface is sphere；
Described outer link and described cylinder shape groove coordinate, the bulb part (401) on described screw root nail (4) top and described
The spherical structure (202) of screw back seat (2) coordinates, and described nut (3) and described screw back seat (2) outer surface thread connect；Outward
Pass through the nut (3) screw-in on screw back seat (2) between portion's connecting rod (1) and screw back seat (2) to realize being movably attached to admittedly
The fixed conversion connected, passes through the nut (3) screw-in on screw back seat (2) and realizes between screw root nail (4) and screw back seat (2)
It is movably attached to the conversion of fixing connection.
Rotating cutting ferrule type screw on nut the most according to claim 1, it is characterised in that described cylinder shape groove inwall is equal
Even distribution is parallel to the rectangular channel of cylinder shape groove end face, and described external connection bar (1) outer surface has uniform cannelure, described
Cannelure and described rectangular channel coordinate.
Rotating cutting ferrule type screw on nut the most according to claim 1 and 2, it is characterised in that described spherical structure (202)
Inner surface has inner groove, bulb part (401) the uniform cannelure of described screw root nail (4), described cannelure and described ball
The inner groove of shape structure (202) inner surface coordinates.
Rotating cutting ferrule type screw on nut the most according to claim 1 and 2, it is characterised in that described screw root nail (4)
Bulb part (401) end has Flos Mume notch, and the afterbody of described screw root nail (4) has notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610316971.6A CN106037915B (en) | 2016-05-12 | 2016-05-12 | Rotating cutting ferrule type screw on nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610316971.6A CN106037915B (en) | 2016-05-12 | 2016-05-12 | Rotating cutting ferrule type screw on nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106037915A true CN106037915A (en) | 2016-10-26 |
| CN106037915B CN106037915B (en) | 2019-01-01 |
Family
ID=57176911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610316971.6A Active CN106037915B (en) | 2016-05-12 | 2016-05-12 | Rotating cutting ferrule type screw on nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106037915B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108186094A (en) * | 2018-02-10 | 2018-06-22 | 吉林百恩医疗器械科技有限公司 | A kind of novel fast insertion type galianconism multi-axial screws |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021126326A1 (en) * | 2019-12-19 | 2021-06-24 | Wright Medical Technology, Inc. | Implant with intramedullary portion and variable angle extramedullary portion |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2511825Y (en) * | 2001-10-26 | 2002-09-18 | 芮涛 | Self-lock multi-axis screw |
| CN2617325Y (en) * | 2003-01-09 | 2004-05-26 | 张家港市欣荣医疗器械有限公司 | Bone screw |
| WO2004089245A2 (en) * | 2003-04-04 | 2004-10-21 | Theken Surgical, Llc | Bone anchor |
| US20080269742A1 (en) * | 2007-04-25 | 2008-10-30 | Levy Mark M | Connector assembly for bone anchoring element |
| CN102836001A (en) * | 2012-09-14 | 2012-12-26 | 苏州艾迪尔医疗器械有限公司 | Universal coaptation nail for minimally invasive surgery |
-
2016
- 2016-05-12 CN CN201610316971.6A patent/CN106037915B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108186094A (en) * | 2018-02-10 | 2018-06-22 | 吉林百恩医疗器械科技有限公司 | A kind of novel fast insertion type galianconism multi-axial screws |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106037915B (en) | 2019-01-01 |
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