CN207041574U - A kind of length-adjustable type thread bone nail - Google Patents
A kind of length-adjustable type thread bone nail Download PDFInfo
- Publication number
- CN207041574U CN207041574U CN201720191071.3U CN201720191071U CN207041574U CN 207041574 U CN207041574 U CN 207041574U CN 201720191071 U CN201720191071 U CN 201720191071U CN 207041574 U CN207041574 U CN 207041574U
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- supporting section
- thread
- length
- locating shaft
- face
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Abstract
It the utility model is related to technical field of medical instruments, more particularly to a kind of length-adjustable type thread bone nail, including thread bush, the first supporting section and the second supporting section, thread bush both ends are symmetrically arranged with transition arc structure, are to set female screwed hole inside thread bush；First supporting section, which is embedded in, is arranged on the left end of thread bush, and the right part of the first supporting section is provided with the first thread segment to match with screwed hole, and the internal thread inside the helicitic texture and screwed hole of the first screw thread section surface matches；Second supporting section, which is embedded in, is arranged on the right-hand member of thread bush, and the left part of the second supporting section is provided with the second thread segment to match with screwed hole, and the internal thread inside the helicitic texture and screwed hole of the second screw thread section surface matches；First supporting section right-hand member is provided with positioning hole, and the left end of the second supporting section is provided with the locating shaft to match with positioning hole, and locating shaft insertion is arranged in positioning hole.The utility model length adjustment is convenient, positioning precision is high, has preferable practical value.
Description
Technical field
It the utility model is related to technical field of medical instruments, and in particular to a kind of length-adjustable type thread bone nail.
Background technology
Fracture is that the continuity of bone structure is broken completely or partially, for its reason, mainly there is following several situations：
Direct violence：Violence directly acts on a certain position of bone and causes the position to fracture, often with different degrees of soft tissue injury；Indirectly
Violence：Make to fracture at a distance by longitudinal conduction, leverage or twisting action when indirect violence acts on；The strain of accumulation property：
For a long time, direct or indirect damage repeatedly, slight can cause a certain privileged site fracture of limbs, also known as fatigue fracture.
The treatment of fracture typically uses replacement and fixation, after the reduction of the fracture, because unstable, easily occurs to shift again, therefore need
It is fixed, fracture site is gradually healed.At present, conventional fixing means has outer fixation：Stretched tight using clamping plate, gypsum
The devices such as band, exterior fixing rack, traction braking are fixed；Inner fixed law：By surgical incision fracture site, using steel plate,
Fracture site is fixed for draw point, intramedullary needle, bone screws etc..
Current bone screws, its structure are typically to include rivet nut, and one end of rivet nut is sharp end, and the other end is tail end, nail
Screw thread is provided with body, by its tail end precession rivet nut, rivet nut is sequentially passed through the nearside cortex of bone of fracture both sides and to side seam
Cortex, and then realize connection and fixation to fracture site.The A of Publication No. CN 105342686 Chinese patent discloses one
Kind screw thread spicule, it is attached, is solved by setting the first supporting section and the second supporting section that length does not wait to be threadably secured section
Fracture connection support problem in the case of complicated fracture of having determined.
With going deep into for research, inventors herein have recognized that, there is what can not be avoided to ask for the bone screws of said structure
Topic, is embodied in：Fracture various informative, for Fracture Simple, good consolidate can be played using the bone screws of said structure
Fixed and connection effect.
But for the different fracture of fractured bone thickness of two sides, but no longer it is applicable, reason is：
On the one hand：Because the knochenbruch thickness for both sides of fracturing is different, it is necessary to using the bone suitable for the bone thickness
Nail carries out the connection of fracture site；If the bone thickness of fracture site both sides is smaller, doctor then needs to select nail length
Degree is attached support less than the nail of bone thickness；If the breach of bone fracture position is bigger, or bone fracture position model
Wider, the longer nail progress bone connection of doctor's needs selection is enclosed, and existing nail length can not be adjusted, doctor can only
Various sizes of nail is selected to carry out synthetism connection according to model, and the gauge size many times selected can not meet that fracture is suffered from
The requirement of person, the synthetism work to medical personnel make troubles, and also increase the pain of fracture patient；
On the other hand, because existing nail end face is taper spike-like structures or end face is planar structure, in medical personnel
During fracture patient synthetism, the secondary injury of patient is easily caused, increases the treatment pain of patient；
Another further aspect, existing nail cause middle fixation because the conllinear precision in axle center between the supporting section of both ends is relatively low
The supporting section axle center at section both ends is easily staggered, and the bone to synthetism work, which is accurately positioned, makes troubles, and synthetism both ends easily occurs
Bone there is the danger to misplace.
So based on above-mentioned deficiency, need one kind badly at present and be applicable not only to conventional Fracture Simple, but also can be according to need
Nail length is adjusted, and nail can be avoided to cause fracture secondary injury and the Bone nail structure of raising fracture positioning precision.
Utility model content
The purpose of this utility model is that：For the above mentioned problem that presently, there are, one kind is applicable not only to conventional simple
Fracture, but also nail length can be adjusted as needed, and nail can be avoided to cause fracture secondary injury and raising bone
The Bone nail structure of positioning precision is rolled over, is held in use with solving the inconvenience of nail length adjustment, nail existing for prior art
Easily cause patient's secondary injury, nail both ends positioning precision relatively low deficiency and defect.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of length-adjustable type thread bone nail, including thread bush, the first supporting section and the second supporting section, the thread bush
Both ends are symmetrically arranged with transition arc structure, are to set female screwed hole inside the thread bush；First support
The embedded left end for being arranged on the thread bush of section, the right part of first supporting section are provided with the to match with the screwed hole
One thread segment, helicitic texture and the internal thread inside the screwed hole of the first screw thread section surface match；Described second
Supporting section is embedded in the right-hand member for being arranged on the thread bush, and the left part of second supporting section is provided with to match with the screwed hole
The second thread segment, helicitic texture and the internal thread inside the screwed hole of the second screw thread section surface match；It is described
First supporting section right-hand member is provided with positioning hole, and the left end of second supporting section is provided with the positioning to match with the positioning hole
Axle, the locating shaft insertion are arranged in the positioning hole；First supporting section left side, the second supporting section right side are ball
End face.
The technical scheme of the application, by the setting of thread bush, the first supporting section and the second supporting section, on the one hand can
Synthetism is carried out to the fracture mode of routine, meets normal bone requirement of the doctor to fracture patient；On the other hand, due to thread bush
The ball end face of the transition arc structure at both ends and the first supporting section left end, the ball end face structure of the second supporting section right-hand member are set
Put, doctor can be made during to patient's synthetism, avoid nail both ends wedge angle or taper spike-like structures to bone or trouble
Person's fracture site causes to scratch, so as to avoid the secondary injury of fracture patient.
Further, the structure setting of the first thread segment of the application, the second thread segment and thread bush, can conveniently cure
Life is when fracture carries out bone-setting treatment to patient, by rotating the first thread segment, the second thread segment or rotating the first screw thread simultaneously
Nail overall work length is adjusted for section, the second thread segment, consequently facilitating bone class of the medical personnel according to fracture both sides
Type and size adjusting nail length, avoid changing the trouble of nail, given during reduction synthetism because nail length is not suitable for
It is painful caused by patient.
Yet further, the setting of the positioning hole and locating shaft of the application, it is possible to increase first of thread bush both ends
Section and the axiality and positioning precision of the second supporting section are supportted, effectively avoids causing because the supporting section at thread bush both ends is not coaxial
Both ends fracture positioning stagger, caused by so as to which nail synthetism be reduced or avoided fracture dislocation injury or malpractice, improve bone
Roll over the bone positioning accurate accuracy at both ends.
Preferably, the length of first supporting section and the second supporting section, first supporting section and described second
The external diameter of supporting section is equal.
Preferably, the outer surface of first supporting section and the second supporting section is smooth surface, first supporting section
Left side is smooth ball end face, and the right side of second supporting section is smooth ball end face.
Preferably, the right side of first supporting section is smooth planar structure, the left side of second supporting section
For smooth planar structure.
Preferably, the ball end face of the first supporting section left end and the periphery of first supporting section are tangent；Institute
Ball end face and the periphery of second supporting section for stating the second supporting section right-hand member are tangent.
Preferably, the length of first thread segment and the second thread segment occupy respectively the thread bush length three/
One, coordinate between first thread segment, the second thread segment and the thread bush for gap.
Preferably, the positioning hole is arranged on the right-hand member shaft core position of first supporting section, and the locating shaft is arranged on
The second supporting section left end shaft core position；The outer surface of the hole wall of the positioning hole and the locating shaft is smooth table
Face.
Preferably, between the locating shaft and the positioning hole it is interference fits, the left side of the locating shaft is surface
The tangent smooth ball end face with locating shaft periphery；The circular hole depth dimensions of the positioning hole is more than or equal to the positioning
The length dimension of axle.
By adopting the above-described technical solution, the beneficial effects of the utility model are：
1st, the technical scheme of the application, the setting of thread bush, the first supporting section and the second supporting section, one side energy are passed through
Enough fracture modes to routine carry out synthetism, meet normal bone requirement of the doctor to fracture patient；On the other hand, due to screw thread
Cover the transition arc structure at both ends and ball end face, the ball end face structure of the second supporting section right-hand member of the first supporting section left end
Set, doctor can be made during to patient's synthetism, avoid nail both ends wedge angle or taper spike-like structures to bone or
Patients with fractures causes at position to scratch, so as to avoid the secondary injury of fracture patient.
2nd, further, the structure setting of the first thread segment of the application, the second thread segment and thread bush, can facilitate
Doctor is when fracture carries out bone-setting treatment to patient, by rotating the first thread segment, the second thread segment or rotating the first spiral shell simultaneously
Nail overall work length is adjusted for line section, the second thread segment, consequently facilitating bone of the medical personnel according to fracture both sides
Type and size adjusting nail length, avoid change nail trouble, reduce synthetism during due to nail length be not suitable for and
To painful caused by patient.
3rd, yet further, the setting of the positioning hole and locating shaft of the application, it is possible to increase the first of thread bush both ends
The axiality and positioning precision of supporting section and the second supporting section, effectively avoid drawing because the supporting section at thread bush both ends is not coaxial
The both ends fracture positioning risen is staggered, and fracture dislocation injury or malpractice, are improved caused by so as to which nail synthetism be reduced or avoided
The bone positioning accurate accuracy at fracture both ends.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is side, sectional structural representation of the present utility model；
Fig. 3 is the second supporting section left end structural representation of the present utility model.
In figure：1st, thread bush；2nd, the first supporting section；3rd, the second supporting section；4th, locating shaft；5th, screwed hole；6th, the first screw thread
Section；7th, the second thread segment；8th, positioning hole.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments, based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
Embodiment 1, as Figure 1-3：
A kind of length-adjustable type thread bone nail, including thread bush 1, the first supporting section 2 and the second supporting section 3, the spiral shell
Line covers 1 both ends and is symmetrically arranged with transition arc structure, and the inside of thread bush 1 is the female screwed hole 5 of setting；Described
One supporting section 2 is embedded in the left end for being arranged on the thread bush 1, and the right part of first supporting section 2 is provided with and the screwed hole 5
The first thread segment 6 to match, helicitic texture and the internal thread phase inside the screwed hole 5 on the surface of the first thread segment 6
Matching；Second supporting section 3 is embedded in the right-hand member for being arranged on the thread bush 1, the left part of second supporting section 3 be provided with
The second thread segment 7 that the screwed hole 5 matches, the helicitic texture on the surface of the second thread segment 7 with inside the screwed hole 5
Internal thread match；The right-hand member of first supporting section 2 is provided with positioning hole 8, the left end of second supporting section 3 be provided with
The locating shaft 4 that the positioning hole 8 matches, the insertion of locating shaft 4 are arranged in the positioning hole 8；The left end of first supporting section 2
Face, the right side of the second supporting section 3 are ball end face.
The technical scheme of the application, pass through the setting of thread bush 1, the first supporting section 2 and the second supporting section 3, one side
Synthetism can be carried out to the fracture mode of routine, meet normal bone requirement of the doctor to fracture patient；On the other hand, due to spiral shell
Line covers the transition arc structure at 1 both ends and ball end face, the ball end of the right-hand member of the second supporting section 3 of the left end of the first supporting section 2
Face structure setting, doctor can be made during to patient's synthetism, avoid the wedge angle or taper spike-like structures pair at nail both ends
Bone or patients with fractures position cause to scratch, so as to avoid the secondary injury of fracture patient.
Further, the structure setting of the first thread segment 6 of the application, the second thread segment 7 and thread bush 1, Neng Goufang
Just doctor is when fracture carries out bone-setting treatment to patient, by rotating the first thread segment 6, the second thread segment 7 or rotating the simultaneously
Nail overall work length is adjusted for one thread segment 6, the second thread segment 7, consequently facilitating medical personnel are according to fracture both sides
Bone types and size adjusting nail length, avoid change nail trouble, reduce synthetism during due to nail length not
Be adapted to and to pain caused by patient.
Yet further, the setting of the positioning hole 8 and locating shaft 4 of the application, it is possible to increase the first of the both ends of thread bush 1
The axiality and positioning precision of the supporting section 3 of supporting section 2 and second, effectively avoid because the supporting section at the both ends of thread bush 1 is not coaxial
Caused by both ends fracture positioning stagger, caused by so as to which nail synthetism be reduced or avoided fracture dislocation injury or malpractice,
Improve the bone positioning accurate accuracy at fracture both ends.
Preferably, the length of the supporting section 3 of the first supporting section 2 and second, first supporting section 2 and described the
The external diameter of two supporting sections 3 is equal.
Preferably, the outer surface of the supporting section 3 of the first supporting section 2 and second is smooth surface, first supporting section 2
Left side be smooth ball end face, the right side of second supporting section 3 is smooth ball end face.
Preferably, the right side of first supporting section 2 is smooth planar structure, the left end of second supporting section 3
Face is smooth planar structure.
Preferably, the ball end face of the left end of the first supporting section 2 and the periphery of first supporting section 2 are tangent；
The ball end face of the right-hand member of second supporting section 3 and the periphery of second supporting section 3 are tangent.
Preferably, the length of the thread segment 7 of the first thread segment 6 and second occupies the three of the length of thread bush 1 respectively
/ mono-, coordinate between first thread segment 6, the second thread segment 7 and the thread bush 1 for gap.
Preferably, the positioning hole 8 is arranged on the right-hand member shaft core position of first supporting section 2, and the locating shaft 4 is set
In the left end shaft core position of the second supporting section 3；The hole wall of the positioning hole 8 and the outer surface of the locating shaft 4 are light
Sliding surface.
Preferably, between the locating shaft 4 and the positioning hole 8 it is interference fits, the left side of the locating shaft 4 is table
Face and the tangent smooth ball end face of the periphery of locating shaft 4；The circular hole depth dimensions of the positioning hole 8 is more than or equal to described
The length dimension of locating shaft 4.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses
Or replace, it should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be wanted with right
The protection domain asked is defined.
Claims (8)
1. a kind of length-adjustable type thread bone nail, including thread bush, the first supporting section and the second supporting section, it is characterised in that：
The thread bush both ends are symmetrically arranged with transition arc structure, are to set female screwed hole inside the thread bush；Institute
The left end that the insertion of the first supporting section is arranged on the thread bush is stated, the right part of first supporting section is provided with and the screwed hole
The first thread segment to match, helicitic texture and the internal thread phase inside the screwed hole of the first screw thread section surface
Match somebody with somebody；Second supporting section insertion is arranged on the right-hand member of the thread bush, the left part of second supporting section be provided with it is described
The second thread segment that screwed hole matches, helicitic texture and the internal thread inside the screwed hole of the second screw thread section surface
Match；The first supporting section right-hand member is provided with positioning hole, and the left end of second supporting section is provided with and the positioning hole
The locating shaft to match, the locating shaft insertion are arranged in the positioning hole；First supporting section left side, the second supporting section are right
End face is ball end face.
A kind of 2. length-adjustable type thread bone nail as claimed in claim 1, it is characterised in that：First supporting section and second
The length of supporting section, first supporting section are equal with the external diameter of second supporting section.
A kind of 3. length-adjustable type thread bone nail as claimed in claim 1 or 2, it is characterised in that：First supporting section with
The outer surface of second supporting section is smooth surface, and the left side of first supporting section is smooth ball end face, described second
The right side of supporting section is smooth ball end face.
A kind of 4. length-adjustable type thread bone nail as claimed in claim 1 or 2, it is characterised in that：First supporting section
Right side is smooth planar structure, and the left side of second supporting section is smooth planar structure.
A kind of 5. length-adjustable type thread bone nail as claimed in claim 3, it is characterised in that：The first supporting section left end
Ball end face and the periphery of first supporting section are tangent；The ball end face of the second supporting section right-hand member and described second
The periphery of supporting section is tangent.
A kind of 6. length-adjustable type thread bone nail as claimed in claim 1, it is characterised in that：First thread segment and second
The length of thread segment occupies 1/3rd of the thread bush length respectively, first thread segment, the second thread segment with it is described
Coordinate between thread bush for gap.
A kind of 7. length-adjustable type thread bone nail as claimed in claim 1, it is characterised in that：The positioning hole is arranged on described
The right-hand member shaft core position of first supporting section, the locating shaft are arranged on the second supporting section left end shaft core position；The positioning
The outer surface of the hole wall in hole and the locating shaft is smooth surface.
A kind of 8. length-adjustable type thread bone nail as described in claim 1 or 7, it is characterised in that：The locating shaft with it is described
It is interference fits between positioning hole, the left side of the locating shaft is surface and the tangent smooth ball end of locating shaft periphery
Face；The circular hole depth dimensions of the positioning hole is more than or equal to the length dimension of the locating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720191071.3U CN207041574U (en) | 2017-03-01 | 2017-03-01 | A kind of length-adjustable type thread bone nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720191071.3U CN207041574U (en) | 2017-03-01 | 2017-03-01 | A kind of length-adjustable type thread bone nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207041574U true CN207041574U (en) | 2018-02-27 |
Family
ID=61489412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720191071.3U Expired - Fee Related CN207041574U (en) | 2017-03-01 | 2017-03-01 | A kind of length-adjustable type thread bone nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207041574U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113974809A (en) * | 2021-12-15 | 2022-01-28 | 河北医科大学第三医院 | Tibia intramedullary nail |
-
2017
- 2017-03-01 CN CN201720191071.3U patent/CN207041574U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113974809A (en) * | 2021-12-15 | 2022-01-28 | 河北医科大学第三医院 | Tibia intramedullary nail |
| CN113974809B (en) * | 2021-12-15 | 2023-07-18 | 河北医科大学第三医院 | Tibia intramedullary nail |
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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: 20180227 Termination date: 20210301 |