CN211484859U - Plug fixed block - Google Patents
Plug fixed block Download PDFInfo
- Publication number
- CN211484859U CN211484859U CN201922388273.9U CN201922388273U CN211484859U CN 211484859 U CN211484859 U CN 211484859U CN 201922388273 U CN201922388273 U CN 201922388273U CN 211484859 U CN211484859 U CN 211484859U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- hole
- screw hole
- screw
- fixing
- 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.)
- Active
Links
Images
Abstract
The utility model relates to an end cap fixed block specifically includes: an upper edge portion including an upper fixing screw-coupling hole; the lower edge part comprises a lower fixed screw hole which is arranged opposite to the upper fixed screw hole, and the hole wall of the lower fixed screw hole is provided with a thread; a first connecting rod insertion hole located at one side of the connecting portion of the upper and lower edge portions; a second connecting rod insertion hole located at the other side of the upper and lower edge portion connecting portion; the first side opening is arranged at the outer side of the tail end of the first connecting rod jack of the upper fixing screw hole and the lower fixing screw hole; the second side opening is formed in the outer side of the tail end of the second connecting rod jack of the upper fixing screw hole and the lower fixing screw hole; and the positioning hole is positioned at the opposite ends of the first connecting rod jack and the second connecting rod jack and used for temporarily fixing the plug fixing block in the operation.
Description
Technical Field
The utility model relates to an orthopedics medical instrument field especially relates to an end cap fixed block.
Background
Fracture is a common clinical disease, and reduction and fixation of fracture are difficult, so that the injury rate is high. At present, a plurality of treatment methods and fixing devices for fracture are provided, surgical treatment is the preferred treatment method, and a bone fracture plate and bone screws are generally adopted to fix a fracture part in the operation.
The fixing device is particularly applied to the process of fracture fixation and bone orthopedic, and the problems of stress shielding, stress concentration and stress shielding exist in steel plates and intramedullary nails. External fixators often do not function as a final fixation due to post-operative infection. In addition, in the existing apparatus using the connecting rod and the clamping block as the connecting and fixing device, the clamping block and the connecting rod slide and rotate in the operation and operation, which seriously affects the operation, and the bone is usually not healed or malformed after the operation due to the rod slip and rod slip caused by unreliable locking in the operation. Therefore, the traditional fracture fixation device has the defects of inconvenient selection and use, inflexible use, high manufacturing cost and poor clinical treatment effect, and needs to be further improved.
Disclosure of Invention
The utility model aims at providing an end cap fixed block, its project organization is simple, assembles portably, uses in a flexible way, and the suitability is good, and the expansibility is strong, firm in connection, low in manufacturing cost.
In order to achieve the above object, the utility model provides an end cap fixed block, the end cap fixed block specifically includes:
an upper rim portion including an upper fixing screw hole;
the lower edge part comprises a lower fixed screw hole which is arranged opposite to the upper fixed screw hole, and the hole wall of the lower fixed screw hole is provided with a thread;
a first connecting rod insertion hole located at one side of the upper and lower edge portion connecting portion;
a second connecting rod insertion hole located at the other side of the upper and lower edge portion connecting portions;
the first side opening is formed in the outer side of the tail end of the first connecting rod jack of the upper fixing screw hole and the lower fixing screw hole;
the second side opening is formed in the outer side of the tail end of the second connecting rod jack of the upper fixing screw hole and the lower fixing screw hole;
when the end part of a first connecting rod is inserted into the through hole of the first connecting rod, the end part of a second connecting rod is inserted into the through hole of the second connecting rod, and a locking screw penetrates through the upper fixing screw hole and the lower fixing screw hole, the upper screwing part of the locking screw is screwed with the thread of the lower fixing screwing hole, and the screw cap of the locking screw abuts against the upper fixing screwing hole, so that the upper edge part and the lower edge part are extruded, the end part of the first connecting rod is tightly fixed in the through hole of the first connecting rod, and the end part of the second connecting rod is tightly fixed in the through hole of the second connecting rod; the screw cap is fixedly connected with the end part of the first connecting rod through the first side opening in an extruding way, and the screw cap is fixedly connected with the end part of the second connecting rod through the second side opening in an extruding way;
and the positioning hole is positioned at the opposite ends of the first connecting rod jack and the second connecting rod jack and used for temporarily fixing the plug fixing block in the operation.
Preferably, the plug fixing portion further includes: a cross-hole;
the cross hole is positioned in the upper fixed threaded connection hole, and is generated by respectively intersecting the first connecting rod jack and the second connecting rod jack with the upper fixed threaded connection hole and used for extruding the connecting rod.
Preferably, the externally-applied radian range of the plug fixing block is 45-60 degrees.
Preferably, the tail end of the plug fixing block is subjected to rounding treatment, and the radius R of the rounding is 3.5-5.5 mm.
Preferably, the aperture of the positioning hole is smaller than that of the connecting rod connecting hole.
Preferably, the hole diameter of the first connecting rod insertion hole is equal to or different from the hole diameter of the second connecting rod insertion hole.
The embodiment of the utility model provides a pair of end cap fixed block, design simple structure assembles portably, and nimble fixed is difficult for taking off the pole, and suitability and expansibility are strong, promote the anticreep performance of end, low in manufacturing cost.
Drawings
Fig. 1 is a top view of a plug fixing block according to an embodiment of the present invention;
fig. 2 is a side view of a plug fixing block according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of portion A-A of FIG. 1;
fig. 4 is a schematic view of the plug fixing block, the locking screw and the connecting rod according to the embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Fig. 1 is a top view of a plug fixing block according to an embodiment of the present invention, fig. 2 is a side view of the plug fixing block according to the embodiment of the present invention, and fig. 3 is a cross-sectional view of a portion a-a in fig. 1; combine fig. 1, fig. 2 and fig. 3 to show, the utility model discloses the end cap fixed block of embodiment is integrated into one piece structure, and the end cap fixed block specifically includes: an upper edge portion 31 and a lower edge portion 32.
The plug fixing block is of a semi-closed structure, and the upper edge part 31 and the lower edge part 32 are integrally formed.
The upper edge part 31 is located at the upper end of the plug fixing block, the surface of the upper edge part 31 is a smooth curved surface, the upper edge part 31 comprises an upper fixing threaded hole 310, the hole wall of the upper fixing threaded hole 310 is a smooth curved surface and is used for being attached to a screw cap part of the locking screw, the screw cap part of the locking screw is completely accommodated in the upper fixing threaded hole 310, and therefore the screw cap surface of the locking screw is flush with the surface of the upper edge part 31.
The lower edge part 32 is located at the lower end of the plug fixing block, and is an arc surface with a certain radian on one side of the bone surface of the skeleton, the lower edge part 32 comprises a lower fixing threaded hole 320, the lower fixing threaded hole 320 and the upper fixing threaded hole 310 are arranged oppositely, and a fastening thread is arranged on the hole wall of the lower fixing threaded hole 320 and is used for being connected with an upper threaded part of a locking screw, so that the locking connection of the upper threaded part of the locking screw and the lower fixing threaded hole 320 is realized.
Specifically, the hole diameter of the upper fixing screw hole 310 is larger than the hole diameter of the lower fixing screw hole 320, so that the screw cap portion of the locking screw can be clamped on the upper edge portion 31, and the connection between the fixing block and the bone is firmer.
A first connecting rod insertion hole 33 formed at one side of the connection portion of the upper and lower edge portions 31 and 32; a second connecting rod insertion hole 34 at the other side of the connection portion of the upper edge part 31 and the lower edge part 32; the first connecting rod through hole 33 and the second connecting rod through hole 34 are symmetrically disposed at two sides of the through hole formed by the upper fixing screw hole 310 and the lower fixing screw hole 320, and are perpendicular to the insertion direction of the through hole, and the aperture of the first connecting rod insertion hole is equal to or different from the aperture of the second connecting rod insertion hole.
Preferably, in the embodiment of the present invention, the diameter of the first connecting rod is equal to the diameter of the second connecting rod, so that the diameters of the first connecting rod insertion hole 33 and the second connecting rod insertion hole 34 are equal.
A first side opening 35 opened at an outer side of the end of the first connecting rod insertion hole 33 of the upper fixing screw hole 310 and the lower fixing screw hole 320; and a second side opening 36 opened at an outer side of the distal ends of the second connecting rod through holes 34 of the upper and lower fixing screw holes 310 and 310.
The first side opening 35 and the second side opening 36 are used for observing and confirming the state of the insertion of the connecting rod into the connecting rod through hole.
A compression slit 37 is arranged between the upper edge part 31 and the lower edge part 32 inside the plug fixed block, the opening square of the compression slit 37 is consistent with the insertion square of the connecting rod through hole, and the compression slit 37 is respectively communicated with the first connecting rod insertion hole 33 and the second connecting rod insertion hole 34; the compression joint 37 adjusts the gap between the upper edge part 31 and the lower edge part 32 through the locking screw, so that the connecting rod is extruded by two sides of the through hole, the fixing of the plug fixing block to the connecting rod is further realized, the fastening and plugging effects of the plug fixing block are further realized, and the double-rod fixing block is further limited and prevented from being separated from the connecting rod.
In one embodiment, after the locking screw is inserted through the upper fixing screw hole 310 of the upper edge portion 31 and the lower fixing screw hole 320 of the lower edge portion 32, the upper screw portion of the locking screw is connected to the lower fixing screw hole 320, as the upper screw portion is connected to the fastening screw and engaged, the screw cap portion of the locking screw is engaged with the upper fixing screw hole 310, as the screw cap portion is fully engaged and received in the upper fixing screw hole 310, the gap of the compression slit 37 is further compressed and does not change, and the screw portion and the head portion of the locking screw are inserted into the bone after passing through the lower fixing screw hole 320, respectively.
And a cross hole 38, which is formed in the upper fixing screw hole 310 by the intersection of the first and second connecting rod insertion holes 33 and 34 with the upper fixing screw hole 310, for pressing and fixing the function of the connecting rod by the locking screw.
In a specific embodiment, two connecting rods are respectively inserted into the first connecting rod insertion hole 33 and the second connecting rod insertion hole 34, after the locking screw is inserted from the upper fixing screw hole 310 and the lower fixing screw hole 320, the upper screwing part of the locking screw is screwed with the thread of the lower fixing screwing hole 320, and the screw cap of the locking screw abuts against the upper fixing screwing hole 310, so that the upper edge part 31 and the lower edge part 32 are pressed, and the two connecting rods are respectively and tightly fixed in the first connecting rod insertion hole 33 and the second connecting rod insertion hole 34; and the screw cap presses and fixes the connecting rod through the compression slit 37 between the upper edge portion 31 and the lower edge portion 32.
And the positioning holes 39 are positioned at the opposite ends of the first connecting rod insertion holes 33 and the second connecting rod insertion holes 34 and used for temporarily fixing the plug fixing block in the operation.
Fig. 3 is a sectional view of a portion a-a in fig. 1, and as shown in fig. 1 and fig. 3, one side of the lower edge portion 32, which is attached to the bone surface, is an arc surface with a certain radian, and the radius of curvature of the arc surface ranges from 8 mm to 12mm, so that the plug fixing block is attached to the bone surface more tightly, and the connection to the fracture part is firmer.
Fig. 4 is a schematic view of the plug fixing block, the locking screw and the connecting rod provided in the embodiment of the present invention, which is shown in fig. 1 and 4, to describe a process of the plug fixing block, the locking screw 1 and the connecting rod 2.
In the process of orthopedic surgery, two connecting rods 2 are respectively inserted into a first connecting rod insertion hole 33 and a second connecting rod insertion hole 34 of a plug fixing block, after a locking screw 1 is inserted into an upper fixing threaded hole 310 of an upper edge portion 31 and a lower fixing threaded hole 320 of a lower edge portion 32, an upper threaded portion of the locking screw 1 is in threaded connection with the threads of the lower fixing threaded hole 320, as the upper threaded portion of the locking screw 1 is connected with and engaged with fastening threads, a screw cap portion of the locking screw 1 is attached to the upper fixing threaded hole 310, as the screw cap portion is completely attached and accommodated in the upper fixing threaded hole 310, a gap of a compression slit 37 is further compressed by the screw cap until the gap is not changed any more, so that the locking screw 1 extrudes the upper edge portion 31 and the lower edge portion 32, and simultaneously the screw caps of the locking screw 1 respectively extrude the connecting rods 2 at two sides through cross holes 38, thereby enabling the connecting rods 2 to be tightly fixed in the first connecting rod through holes 33 and the second, and then the screw part and the nail head part of the locking screw 1 respectively pass through the lower fixing threaded hole 320 and then are implanted into the bone, so that the plug fixing block, the locking screw 1 and the connecting rod 2 are completely fixed together.
The embodiment of the utility model provides a pair of end cap fixed block, design simple structure assembles portably, and nimble fixed is difficult for taking off the pole, and suitability and expansibility are strong, promote the anticreep performance of end, low in manufacturing cost.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides an end cap fixed block, its characterized in that, the end cap fixed block specifically includes:
an upper rim portion including an upper fixing screw hole;
the lower edge part comprises a lower fixed screw hole which is arranged opposite to the upper fixed screw hole, and the hole wall of the lower fixed screw hole is provided with a thread;
a first connecting rod insertion hole located at one side of the upper and lower edge portion connecting portion;
a second connecting rod insertion hole located at the other side of the upper and lower edge portion connecting portions;
the first side opening is formed in the outer side of the tail end of the first connecting rod jack of the upper fixing screw hole and the lower fixing screw hole;
the second side opening is formed in the outer side of the tail end of the second connecting rod jack of the upper fixing screw hole and the lower fixing screw hole;
when the end part of a first connecting rod is inserted into the through hole of the first connecting rod, the end part of a second connecting rod is inserted into the through hole of the second connecting rod, and a locking screw penetrates through the upper fixing screw hole and the lower fixing screw hole, the upper screwing part of the locking screw is screwed with the thread of the lower fixing screwing hole, and the screw cap of the locking screw abuts against the upper fixing screwing hole, so that the upper edge part and the lower edge part are extruded, the end part of the first connecting rod is tightly fixed in the through hole of the first connecting rod, and the end part of the second connecting rod is tightly fixed in the through hole of the second connecting rod; the screw cap is fixedly connected with the end part of the first connecting rod through the first side opening in an extruding way, and the screw cap is fixedly connected with the end part of the second connecting rod through the second side opening in an extruding way;
and the positioning hole is positioned at the opposite ends of the first connecting rod jack and the second connecting rod jack and used for temporarily fixing the plug fixing block in the operation.
2. The plug fixed block according to claim 1, further comprising: a cross-hole;
the cross hole is positioned in the upper fixed threaded connection hole, and is generated by respectively intersecting the first connecting rod jack and the second connecting rod jack with the upper fixed threaded connection hole and used for extruding the connecting rod.
3. The plug fixed block according to claim 1, wherein the radian of the outer edge of the plug fixed block ranges from 45 degrees to 60 degrees.
4. The plug fixed block according to claim 3, wherein the tail end of the plug fixed block is subjected to rounding treatment, and the radius R of the rounding is 3.5-5.5 mm.
5. The plug fixed block according to claim 1, wherein the first connecting rod insertion hole has an equal or different aperture than the second connecting rod insertion hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922388273.9U CN211484859U (en) | 2019-12-26 | 2019-12-26 | Plug fixed block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922388273.9U CN211484859U (en) | 2019-12-26 | 2019-12-26 | Plug fixed block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211484859U true CN211484859U (en) | 2020-09-15 |
Family
ID=72420229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922388273.9U Active CN211484859U (en) | 2019-12-26 | 2019-12-26 | Plug fixed block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211484859U (en) |
-
2019
- 2019-12-26 CN CN201922388273.9U patent/CN211484859U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3383297B1 (en) | External fixator assembly | |
| US20160220290A1 (en) | Bone screw with multiple thread profiles for far cortical locking and flexible engagement to a bone | |
| JP7416728B2 (en) | External fixation connecting rod with female fitting | |
| US20070260247A1 (en) | Interlocking intramedullary nails with outer screw | |
| JP2007506449A (en) | Tightening device | |
| EP2713918A1 (en) | Assemblies for aligning a bone fixation plate | |
| CN211484859U (en) | Plug fixed block | |
| EP2224865A2 (en) | External bone screw system and method of use for fractures, fusions or osteotomies | |
| CN211325485U (en) | Double-rod fixing block | |
| CN211325488U (en) | Single-rod half-hook fixing block | |
| CN111035443A (en) | Double-rod fixing block | |
| WO2017166423A1 (en) | Locking and external-fixation device for treatment of tibial fracture | |
| CN203915048U (en) | Novel combination type fracture of calcaneus internal fixation steel plate | |
| CN211325487U (en) | Single-rod fixing block | |
| CN211534753U (en) | Closed locking device | |
| CN211066967U (en) | Fracture external fixation support with external fixation nail | |
| CN113081218A (en) | Kirschner wire for orthopedic operation | |
| US10136921B2 (en) | Elongated pin for application of an external fixator | |
| CN216090736U (en) | Universal hollow locking screw | |
| WO2021129548A1 (en) | Semi-closed fixing device and closed locking device | |
| CN211484860U (en) | Locking screw | |
| CN204951130U (en) | Orthopedics implant cable device | |
| CN210301183U (en) | Locking bone fracture plate | |
| CN211325503U (en) | Proximal humerus special-shaped block | |
| CN216724713U (en) | Hollow bone screw for intramedullary fixation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |