CN208388730U - Pelvis elastic pressurized screw and pelvis screw assembly - Google Patents
Pelvis elastic pressurized screw and pelvis screw assembly Download PDFInfo
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- CN208388730U CN208388730U CN201721535562.1U CN201721535562U CN208388730U CN 208388730 U CN208388730 U CN 208388730U CN 201721535562 U CN201721535562 U CN 201721535562U CN 208388730 U CN208388730 U CN 208388730U
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- pelvis
- elastic
- screw
- bolt
- screw thread
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Abstract
The utility model provides a kind of pelvis elastic pressurized screw and pelvis screw assembly, belongs to the field of medical instrument technology.Pelvis elastic pressurized screw, including elastic male screw thread and elastic inner bolt, through-hole is provided in elastic male screw thread, elastic inner bolt includes sequentially connected nuts, the body of bolt and bolt head, and nuts, the body of bolt and bolt head are detachably set in through-hole and nuts stretches out through-hole.Pelvis screw assembly, including elastic guide needle, guider and above-mentioned pelvis elastic pressurized screw, one end of elastic guide needle are provided with guider, and the other end is detachably set in through-hole.Guide pin is first penetrated into pelvis when use, elastic male screw thread is set in outside guide pin again, guide pin is taken out, elastic inner bolt is installed on to the Medullary fixation that pelvis is carried out in elastic male screw thread afterwards, easy to operate, safety is minimally invasive, and biomethanics is reliable, reduce pelvis fracture operation difficulty, the problems such as amount of bleeding in effective solution pelvis bone reefing is more, operating time is long.
Description
Technical field
The utility model relates to the field of medical instrument technology, in particular to a kind of pelvis elastic pressurized screw and bone
Basin screw assembly.
Background technique
With the fast development of communications, construction industry etc., the Annual occurence rate of pelvic fracture is in rising trend.Pelvis bone at present
The operative treatment mode of folding mainly has exterior fixing rack, steel plate, hollow screw etc..Fixed wound is small outside pelvis support, and bleeding is few,
It is easy to operate, pelvic ring can be stablized rapidly, but the later period is easy to appear pin track infection, sets pain at nail, screw loosening, influencing to suffer from
The disadvantages of person's functional training and life, therefore exterior fixing rack is chiefly used in pelvic fracture early stage and is fixed temporarily.Although Plate internal fixiation
One phase can reach anatomical reduction and strong fixation, but that there are operation wounds is big, intraoperative hemorrhage is more, operating difficulty is high, learning curve
The problems such as long.
Utility model content
The purpose of this utility model is to provide a kind of pelvis elastic pressurized screws, and elasticity and intensity are preferably combined
Together, there is good fixed effect to the pelvis of fracture.
The another object of the utility model is to provide a kind of pelvis screw assembly, carries out the Medullary fixation of pelvis, operate
Simply, safety is minimally invasive, and biomethanics is reliable, reduce pelvis fracture operation difficulty, in effective solution pelvis bone reefing
The problems such as amount of bleeding is more, operating time is long.
The utility model adopts the following technical solutions realization:
A kind of pelvis elastic pressurized screw, including elastic male screw thread and elastic inner bolt are provided in elastic male screw thread logical
Hole, elastic inner bolt include sequentially connected nuts, the body of bolt and bolt head, and nuts, the body of bolt and bolt head are detachable
It is set in through-hole and nuts stretches out through-hole.
Further, in the utility model preferred embodiment, the above-mentioned body of bolt is flexible.
Further, in the utility model preferred embodiment, the end of the separate body of bolt of above-mentioned nuts is arranged
There is thread groove, thread groove with thread tap for matching.
Further, in the utility model preferred embodiment, it is above-mentioned elasticity male screw thread include screw cap, head of screw and
The flexible body of screw, screw cap, the body of screw and head of screw are sequentially connected and form through-hole.
Further, in the utility model preferred embodiment, the end of the separate body of screw of above-mentioned screw cap is arranged
There is hexagonal groove, hexagonal groove with hexagonal screwdriver for matching.
Further, in the utility model preferred embodiment, above-mentioned screw cap is provided with the first external screw thread, head of screw
It is provided with the second external screw thread.
Further, in the utility model preferred embodiment, above-mentioned first externally threaded length is less than the second outer spiral shell
The length of line, the sum of the first externally threaded length and the second externally threaded length account for the 10%- of the total length of elastic male screw thread
30%.
Further, in the utility model preferred embodiment, above-mentioned first externally threaded screw pitch is less than the second outer spiral shell
The screw pitch of line.
Further, in the utility model preferred embodiment, the end of above-mentioned bolt head is tapered.
A kind of pelvis screw assembly, including elastic guide needle, guider and above-mentioned pelvis elastic pressurized screw, elastic guide needle
One end is provided with guider, and the other end is detachably set in through-hole.
The beneficial effect that the preferred embodiment of the utility model provides pelvis elastic pressurized screw is: since pelvis is not advise
Then shape, so, inner bolt and male screw thread are flexible, can match with the shape of pelvis, it is easier to pass through pelvic curvature
And irregular pulp cavity.Elastic inner bolt is set in elastic male screw thread, together by elastic inner bolt and elastic male screw thread
The place of pelvic fracture is fixed, that is, has taken into account the elasticity of screw, has good passability, and can reach to pelvic fracture
The strong fixation at place.Nuts stretches out through-hole, and the installation of more convenient bolt provides conveniently for medical staff.
Having the beneficial effect that for pelvis screw assembly provided by the utility model first holds guider end, and elastic guide needle is worn
Enter in pelvis pulp cavity, guider removed, then elastic male screw thread is set in outside guide pin, guide pin is taken out, after by spiral shell in elasticity
Bolt is installed on the Medullary fixation that pelvis is carried out in elastic male screw thread, and easy to operate, safety is minimally invasive, and biomethanics is reliable, reduces
The problems such as pelvis fracture operation difficulty, amount of bleeding in effective solution pelvis bone reefing is more, operating time is long.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
The protection scope of the utility model is also belonged to obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram for the pelvis elastic pressurized screw that the utility model embodiment 1 provides；
The structural schematic diagram of elastic inner bolt in the pelvis elastic pressurized screw that Fig. 2 provides for the utility model embodiment 1；
The structural schematic diagram of elastic male screw thread in the pelvis elastic pressurized screw that Fig. 3 provides for the utility model embodiment 1；
The top view of screw cap in the elastic male screw thread that Fig. 4 provides for the utility model embodiment 1；
Fig. 5 is the structural schematic diagram of elastic guide needle and guider that the utility model embodiment 2 provides.
Icon: 100- pelvis elastic pressurized screw；110- elasticity male screw thread；120- elasticity inner bolt；121- nuts；
The 122- body of bolt；123- bolt head；111- screw cap；113- head of screw；The 112- body of screw；114- through-hole；115- hexagonal groove；
The first external screw thread of 116-；The second external screw thread of 117-；210- elastic guide needle；220- guider.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.Therefore, below to attached
The detailed description of the embodiments of the present invention provided in figure is not intended to limit the range of claimed invention,
But it is merely representative of the selected embodiment of the utility model.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, belongs to the model of the utility model protection
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
Embodiment 1
Fig. 1 is the structural schematic diagram of pelvis elastic pressurized screw 100 provided in this embodiment.Referring to Fig. 1, the present embodiment
In, pelvis elastic pressurized screw 100 includes elastic male screw thread 110 and elastic inner bolt 120.It is provided in elastic male screw thread 110
Through-hole 114, elastic inner bolt 120 are detachably set in through-hole 114.
Since pelvis is irregular shape, so, elastic inner bolt 120 and elastic male screw thread 110 are flexible, Neng Gouyu
The shape of pelvis matches, it is easier to pass through pelvic curvature and irregular pulp cavity.Elastic inner bolt 120 is set in outside elasticity
In screw 110, the place of pelvic fracture is fixed together by elastic inner bolt 120 and elastic male screw thread 110, that is, is taken into account
The elasticity of screw, has good passability, and can reach to the strong fixation at pelvic fracture.
Fig. 2 is the structural schematic diagram of elastic inner bolt 120 in pelvis elastic pressurized screw 100 provided in this embodiment.Please
Together refering to fig. 1 and Fig. 2, in the present embodiment, elastic inner bolt 120 includes sequentially connected nuts 121,122 and of the body of bolt
Bolt head 123, nuts 121, the body of bolt 122 and bolt head 123 are detachably set in through-hole 114 and nuts 121 stretches out
Through-hole 114.Using elastic male screw thread 110 and elastic inner bolt 120 together to being fixed at pelvic fracture when, by bolt
First 123 and the body of bolt 122 be arranged in through-hole 114, keep the fixed effect at pelvic fracture more preferable, nuts 121 stretch out through-hole
114, the installation of more convenient bolt provides conveniently for medical staff.
In the present embodiment, the body of bolt 122 is flexible.The body of bolt 122 is set to be better able to adapt to pelvic curvature and irregular
Pulp cavity facilitates the Medullary fixation of pelvis elastic pressurized screw 100.
Preferably, the body of bolt 122 is flexible cylindrical, massive structure.The outer diameter of the body of bolt 122 and elastic male screw thread
110 internal diameter matches, i.e., the outer diameter of the body of bolt 122 is consistent with the diameter of through-hole 114, and elastic inner bolt 120 is inserted into outside elasticity
Pelvis elastic pressurized screw 100 can be enhanced to the intensity of external force resistance in screw 110.
The end of the separate body of bolt 122 of nuts 121 is provided with thread groove, and thread groove is used for and thread tap phase
Matching.When needing that elastic inner bolt 120 is put into or is taken out through-hole 114 of elastic male screw thread 110, directly by screw thread silk
Cone, which is placed in thread groove, to be operated, and is made the installation of elastic inner bolt 120 and is taken out more convenient.
Preferably, the end of bolt head 123 is tapered, more convenient that bolt head 123 is put into through-hole 114, and operation is more
Add simple.
Fig. 3 is the structural schematic diagram of elastic male screw thread 110 in pelvis elastic pressurized screw 100 provided in this embodiment.Please
- Fig. 3 refering to fig. 1 together, in the present embodiment, elastic male screw thread 110 includes screw cap 111, head of screw 113 and flexible screw
Body 112, screw cap 111, the body of screw 112 and head of screw 113 are sequentially connected and form through-hole 114.The flexible body of screw is set
112, make the body of screw 112 be better able to adapt to pelvic curvature and irregular pulp cavity, facilitates the marrow of pelvis elastic pressurized screw 100
Interior fixation.Elastic guide needle can be set in through-hole 114, facilitate the installation of elastic male screw thread 110.Preferably, elastic guide needle can be with
Coaxially penetrate through-hole 114.
Preferably, the body of screw 112 is that hollow spring structure can be bent and have similar to the hollow drill of hollow soft drill
Certain elasticity, adapts to various curved pulp cavitys, convenient for being placed in pelvis pulp cavity in irregular shape.
Fig. 4 is the top view of screw cap 111 in elastic male screw thread 110 provided in this embodiment.Also referring to Fig. 1 and figure
4, in the present embodiment, the end of the separate body of screw 112 of screw cap 111 is provided with hexagonal groove 115, and hexagonal groove 115 is used for
Match with hexagonal screwdriver.When needing to be put into or take out pelvis pulp cavity along elastic guide needle for elastic male screw thread 110,
Directly thread tap is placed in thread groove and is operated, the installation of elastic inner bolt 120 is made and is taken out more convenient.
In the present embodiment, screw cap 111 is provided with the first external screw thread 116, and head of screw 113 is provided with the second external screw thread 117.
The length of first external screw thread 116 is less than the length of the second external screw thread 117, and the length of the second external screw thread 117 of head of screw 113 is big
It can after elastic male screw thread 110 is screwed into pelvis pulp cavity along elastic guide needle in the length of the first external screw thread 116 of screw cap 111
There is good pressurization to pelvic fracture end.
Preferably, the length of the first external screw thread 116 and the sum of the length of the second external screw thread 117 account for elastic male screw thread 110
The 10%-30% of total length.The length of first external screw thread 116 of the second external screw thread 117 and screw cap 111 of head of screw 113 accounts for
The ratio of elastic 110 total length of male screw thread is smaller, after elastic male screw thread 110 is screwed into pelvis pulp cavity along elastic guide needle, into one
Step has good pressurization to pelvic fracture end.
The screw pitch of first external screw thread 116 less than the second external screw thread 117 screw pitch, when elastic male screw thread 110 enter pelvis marrow
After chamber, further there is good pressurization to pelvic fracture end.Preferably, two times of the screw pitch of the first external screw thread 116 with
The screw pitch of second external screw thread 117 is consistent.
Simultaneously as the setting of the second external screw thread 117, the thread groove at the tip of the second external screw thread 117 is from function slot, in bullet
Property male screw thread 110 enter pelvis pulp cavity when, be not necessarily to tapping, save operating time.
In the present embodiment, the size one of the nuts 121 of the screw cap 111 of elastic male screw thread 110 and elastic inner bolt 120
It causes, more convenient pelvis elastic pressurized screw 100 is arranged in pelvis pulp cavity.
Embodiment 2
Present embodiments provide a kind of pelvis screw assembly, including 1 pelvis of elastic guide needle 210, guider 220 and embodiment
Elastic pressurized screw 100.Fig. 4 is the structural schematic diagram of elastic guide needle 210 and guider 220 provided in this embodiment.Please together
Refering to fig. 1 and Fig. 4, in the present embodiment, one end of elastic guide needle 210 is provided with guider 220, and the other end is detachably set to logical
In hole 114.
Elastic guide needle 210 and guider 220 are the auxiliary tool for installing pelvis elastic pressurized screw 100, it is also necessary to be used
Tapered opening device, hexagonal screwdriver and thread tap are cooperated, and first hold 220 end of guider, elastic guide needle 210 is penetrated bone
In basin pulp cavity, guider 220 is removed, then the head of screw 113 of elastic male screw thread 110 is inserted into outside elastic guide needle 210, makes elasticity
Guide pin 210 is arranged in through-hole 114, is fully screwed into elastic male screw thread 110 along elastic guide needle 210 using hexagonal screwdriver and sets
Outside elastic guide needle 210, elastic guide needle 210 is taken out, bolt head 123 is protruded into through-hole 114, using in thread tap elasticity
Bolt 120 is installed on the Medullary fixation that pelvis is carried out in elastic male screw thread 110, and easy to operate, safety is minimally invasive, and biomethanics can
It leans on, reduces pelvis fracture operation difficulty, the amount of bleeding in effective solution pelvis bone reefing is more, operating time is long etc. asks
Topic.
Preferably, elastic guide needle 210 is the elastic intramedullary needle of diameter 2.0-2.5mm, and diameter is less than elastic male screw thread 110
Internal diameter.One end of the separate guider 220 of elastic guide needle 210 is flat end, and elastic guide needle 210 is facilitated to enter pelvis
Pulp cavity, it is preferable that flat end is blunt, and operation is avoided to bleed profusely.
In the present embodiment, the axis of guider 220 and the Axis Cross of elastic guide needle 210 are probably vertical, are formed "T"-shaped
Handle, guider 220 can change direction by assistant spring guide pin 210 during surgery, elastic guide needle 210 avoided to be pierced by fracture end,
There is an oval notch in 220 distal end of guider, thus it is possible to vary 210 direction of travel of elastic guide needle keeps elastic guide needle 210 quasi-
Really pass through the fracture end of patient.
Preferably, it is arranged jagged on guider 220, one end of elastic guide needle 210 is arranged in notch, facilitates guider
220 are installed on taking-up.
This pelvis screw assembly uses 100 technology of pelvis elastic pressurized screw, and pelvis elastic pressurized screw 100 is in pelvis bone
It rolls in minimally invasive fixation, is designed by the elasticity to the body of bolt 122 and the body of screw 112, meet pelvis elastic pressurized screw 100 more
Pelvic curvature and irregular pulp cavity, are really achieved Medullary fixation, more meet biomechanical principle, by head of screw 113
The design of first external screw thread 116 of the second external screw thread 117 and screw cap 111, reaches the good pressurization of fracture end and double cortex are solid
Fixed, elastic male screw thread 110 has good pulp cavity passability, and elastic inner bolt 120 is added wherein, effectively improves bone
The fixing intensity and anti-rotation performance of basin elastic pressurized screw 100, are more advantageous to the strong fixation of fracture end, can be effectively reduced
The problems such as operating difficulty and risk, amount of bleeding in effective solution pelvis bone reefing is more, operating time is long.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of pelvis elastic pressurized screw, which is characterized in that including elastic male screw thread and elastic inner bolt, the outer spiral shell of elasticity
It is provided with through-hole in nail, the elasticity inner bolt includes sequentially connected nuts, the body of bolt and bolt head, the nuts,
The body of bolt and the bolt head are detachably set in the through-hole and the nuts stretches out the through-hole.
2. pelvis elastic pressurized screw according to claim 1, which is characterized in that the body of bolt is flexible.
3. pelvis elastic pressurized screw according to claim 2, which is characterized in that the separate bolt of the nuts
The end of body is provided with thread groove, and the thread groove with thread tap for matching.
4. pelvis elastic pressurized screw according to claim 2, which is characterized in that the elasticity male screw thread includes screw
Cap, head of screw and the flexible body of screw, the screw cap, the body of screw and the head of screw are sequentially connected and are formed described
Through-hole.
5. pelvis elastic pressurized screw according to claim 4, which is characterized in that the separate screw of the screw cap
The end of body is provided with hexagonal groove, and the hexagonal groove with hexagonal screwdriver for matching.
6. pelvis elastic pressurized screw according to claim 4, which is characterized in that the screw cap is provided with the first outer spiral shell
Line, the head of screw are provided with the second external screw thread.
7. pelvis elastic pressurized screw according to claim 6, which is characterized in that the first externally threaded length is less than
The second externally threaded length, the sum of the first externally threaded length and the described second externally threaded length account for the elasticity
The 10%-30% of the total length of male screw thread.
8. pelvis elastic pressurized screw according to claim 7, which is characterized in that the first externally threaded screw pitch is less than
The second externally threaded screw pitch.
9. pelvis elastic pressurized screw according to claim 1-8, which is characterized in that the end of the bolt head
It is tapered.
10. a kind of pelvis screw assembly, which is characterized in that including described in elastic guide needle, guider and claim any one of 1-9
Pelvis elastic pressurized screw, one end of the elastic guide needle is provided with the guider, and the other end is detachably set to described
In through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721535562.1U CN208388730U (en) | 2017-11-16 | 2017-11-16 | Pelvis elastic pressurized screw and pelvis screw assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721535562.1U CN208388730U (en) | 2017-11-16 | 2017-11-16 | Pelvis elastic pressurized screw and pelvis screw assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208388730U true CN208388730U (en) | 2019-01-18 |
Family
ID=65066513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721535562.1U Expired - Fee Related CN208388730U (en) | 2017-11-16 | 2017-11-16 | Pelvis elastic pressurized screw and pelvis screw assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208388730U (en) |
-
2017
- 2017-11-16 CN CN201721535562.1U patent/CN208388730U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190118 Termination date: 20211116 |