CN208371870U - A kind of Pubic symphysis diastasis bone bolt internal fixation device - Google Patents
A kind of Pubic symphysis diastasis bone bolt internal fixation device Download PDFInfo
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- CN208371870U CN208371870U CN201720921417.0U CN201720921417U CN208371870U CN 208371870 U CN208371870 U CN 208371870U CN 201720921417 U CN201720921417 U CN 201720921417U CN 208371870 U CN208371870 U CN 208371870U
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- China
- Prior art keywords
- bone bolt
- outer tube
- pubic symphysis
- tapping screw
- bone
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Abstract
The utility model relates to a kind of Pubic symphysis diastasis bone bolt internal fixation devices, belong to the field of medical instrument technology.It is by bone bolt self-tapping screw, outer tube, pressurizing nut, spring washer and circle is stopped to constitute, and one end production of bone bolt self-tapping screw has from tap holder, and other end production has bone bolt needle handle and bone bolt screw thread, and pressurizing nut, spring washer are housed thereon and stop circle；One end production of outer tube has anti-back pawl and elastic opening, and production has casing threads thereon.The utility model from tap holder and anti-back pawl and elastic opening by cooperating, keep pubic symphysis fully locked in fixed early stage, and it prevents from slipping by anti-back pawl and elastic opening, make patient allow pubic symphysis as amphiarthrodial physiology sexuality to reach, improve existing hollow screw be not fixed firmly, broken nail, abjection the problem of.The advantages that the utility model has structure simple, and easy for installation, operative incision is small, only needs mini-invasive incision and opposite side without cutting, and fixation, clinical effectiveness is good, few intercurrent disease.
Description
Technical field
The utility model relates to a kind of Pubic symphysis diastasis bone bolt internal fixation devices, belong to the field of medical instrument technology.
Background technique
In the orthopaedic trauma of hospital, fracture patient be it is most common, the fracture site of fracture patient is also various.
Wherein having a kind of fracture is pelvic fracture, and since the pelvic structures of human body are complicated, surrounding important blood vessels nerve is abundant, vena iliaca externa
With the travelings such as obturator nerve, and it is difficult to appear fracture after pelvic fracture, therefore the treatment of pelvic fracture is always orthopaedic trauma
Difficult point, the treatment that orthopaedics separates pubis mostly uses non-operative treatment in early days, the methods of fixed outside such as traction, pelvis abdominal belt,
These methods frequently result in bone nonunion, the generation of the complication such as malunion and chronic ache.Draw to solve non-operative treatment
The complication of hair all uses operative treatment fixed in forcing screw, the pressurization of existing use to Pubic symphysis diastasis in recent years
Screw carries out forcing screw used in internal fixation treatment due to unreasonable structure, through often there is broken nail, fixation after operative treatment
The problem of insecure, screw slips, causes pubic symphysis to separate again, causes operative failure.In order to avoid solid in forcing screw
Fixed risk also has the operative treatment using Plate internal fixiation, but this method operative incision is big, and amount of bleeding is big, damages to pubis
It is larger, surgical risks degree is big and complication is more.Still an alternative is that using the method for external fixing rack, although the method risk
It is small, but patient's normal life is influenced, therapeutic effect is inaccurate, and screw way easy infection, easily causes operative failure.
Summary of the invention
The purpose of this utility model is that in view of the above shortcomings of the prior art, providing a kind of according to human body pubic symphysis
The shape at position is designed, and is made of bone bolt needle handle and housing screwed pipe, and one end production of bone bolt needle handle has from tap holder, housing spiral shell
One end production of pipe has the expansion locking device with elasticity, prevents screw by expansion locking device in the Pubic symphysis diastasis fixed stage
It slips, can smoothly fixator be taken out by unclamping expansion locking device after Pubic symphysis diastasis healing, easy for installation, operative incision
It is small, the Pubic symphysis diastasis bone bolt internal fixation device of fixation.
The utility model is to realize above-mentioned purpose by the following technical solutions:
A kind of Pubic symphysis diastasis bone bolt internal fixation device, it is by bone bolt self-tapping screw, outer tube, pressurizing nut, spring pad
Circle and blocking circle are constituted, it is characterised in that: one end production of bone bolt self-tapping screw has from tap holder, the other end of bone bolt self-tapping screw
Production has bone bolt needle handle and bone bolt screw thread；One end production of outer tube has anti-back pawl and elastic opening, the other end system of outer tube
Work has taking-up hole, and production has casing threads in housing pipe outer wall；Outer tube is sleeved on the outside of bone bolt self-tapping screw, bone bolt self tapping
Screw rod from the anti-back pawl that tap holder is placed in outer tube, on the bone bolt screw thread of bone bolt self-tapping screw be equipped with pressurizing nut, pressurize spiral shell
Female side is equipped with spring washer and stops circle.
The pressurizing nut by spring washer and stops circle by bone bolt when rotating clockwise on bone bolt self-tapping screw
Self-tapping screw is compressed from the outside casing of tap holder, the anti-back pawl of outer tube right end is strutted into outer arcuate, while elasticity being opened
Mouth also outside distending.
The pressurizing nut unclamps pressurizing nut and spring washer when rotating counterclockwise on bone bolt self-tapping screw, will
Bone bolt self-tapping screw is unclamped from outside the outside casing of tap holder, and the anti-back pawl and elastic opening of right end reset under the elastic force of itself.
The left end production of the bone bolt self-tapping screw has snap slot.
The anti-back pawl at least two, elastic opening are at least three.
The bone bolt self-tapping screw is hollow structure.
The maximum gauge from tap holder of the bone bolt self-tapping screw is greater than the outer diameter of outer tube.
The blocking circle is the arch for meeting pubis biological structure, and circle is stopped to be fixedly connected or live with one end of outer tube
Dynamic connection.
The beneficial effect of the utility model compared with prior art is:
The Pubic symphysis diastasis bone bolt internal fixation device is according to the structures of human body pubic joint parts, design and pubic symphysis phase
Identical shape keeps pubic symphysis fully locked by the cooperation from tap holder and anti-back pawl and elastic opening in fixed early stage, and
Prevent fixator from slipping by anti-back pawl and elastic opening, so that reaching makes patient allow pubic symphysis as amphiarthrodial life
Rationality activity, and can improve that conventional steel plates early stage is not fixed firmly and Dinner phase hard force is concentrated, so as to cause steel plate screw it is disconnected
The problem of splitting；Also improve existing hollow screw be not fixed firmly, broken nail, abjection the problems such as, guarantee fixed using external fixing rack
The quality of life of patient improved, infection caused by avoiding fixed material exposed.It is unclamped after Pubic symphysis diastasis healing
Expansion locking device can smoothly take out fixator, mitigate the pain of patient's second operation.The utility model has structure simple,
Easy for installation, operative incision is small, only needs mini-invasive incision and opposite side is without cutting, fixation, clinical effectiveness is good, few intercurrent disease
The advantages that.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of Pubic symphysis diastasis bone bolt internal fixation device；
Fig. 2 is the structural schematic diagram after a kind of expansion locking device of Pubic symphysis diastasis bone bolt internal fixation device struts；
Fig. 3 is the structural schematic diagram of bone bolt self-tapping screw；
Fig. 4 is the structural schematic diagram of outer tube.
In figure: 1, bone bolt self-tapping screw, 1-1, from tap holder, 1-2, bone bolt needle handle, 1-3, snap slot, 1-4, bone bolt screw thread,
2,2-4, outer tube, 2-1, anti-back pawl, 2-2, elastic opening, 2-3, casing threads take out hole, 3, pressurizing nut, 4, spring pad
Circle, 5, blocking circle.
Specific embodiment
A kind of Pubic symphysis diastasis bone bolt internal fixation device, it is by bone bolt self-tapping screw 1, outer tube 2, pressurizing nut 3, spring
Washer 4 and blocking circle 5 are constituted, and one end production of bone bolt self-tapping screw 1 has from tap holder 1-1, are greater than from the maximum gauge of tap holder 1-1
The outer diameter of outer tube 2；The other end production of bone bolt self-tapping screw 1 has bone bolt needle handle 1-2 and bone bolt screw thread 1-4, bone bolt self tapping spiral shell
Production has snap slot 1-3 between the bone bolt needle handle 1-2 and bone bolt screw thread 1-4 of bar 1；Bone bolt self-tapping screw 1 is fabricated to hollow structure.
One end production of outer tube 2 has anti-back pawl 2-1 and elastic opening 2-2, and anti-back pawl 2-1 at least two, elastic opening 2-2 is at least
It is three, the other end production of outer tube 2, which has, takes out hole 2-4, and production has casing threads 2-3 on the outer wall of outer tube 2.Outer tube
2 are sleeved on the outside of bone bolt self-tapping screw 1, bone bolt self-tapping screw 1 from the anti-back pawl 2-1 that tap holder 1-1 is placed in outer tube, bone
Pressurizing nut 3 is housed, the side of pressurizing nut 3 equipped with spring washer 4 and stops circle on the bone bolt screw thread 1-4 of bolt self-tapping screw 1
5.The blocking circle 5 is the arch for meeting pubis biological structure, and blocking circle 5 is fixedly connected with one end of outer tube 2 or activity
Connection.
When pressurizing nut 3 rotates clockwise on bone bolt self-tapping screw 1, by spring washer 4 and stop circle 5 by bone bolt
Self-tapping screw 1 is compressed from tap holder 1-1 into outer tube 2, the anti-back pawl 2-1 of 2 right end of outer tube is strutted into outer arcuate, simultaneously
By elastic opening 2-2 also outside distending.When pressurizing nut 3 rotates counterclockwise on bone bolt self-tapping screw 1, pressurizing nut is unclamped
3 and spring washer 4, by being unclamped from tap holder 1-1 to outside outer tube 2 for bone bolt self-tapping screw 1, the anti-back pawl 2-1 and elasticity of right end
Opening 2-2 resets under the elastic force of itself.
The Pubic symphysis diastasis bone bolt internal fixation device is in use, be set in bone bolt self-tapping screw 1 from the left side for outer tube 2
On, successively circle 5(will be stopped to refer to the case where blocking circle 5 is flexibly connected with outer tube 2), elastic washer 4 and pressurizing nut 3 be from a left side
On bone bolt self-tapping screw 1, preparation is finished on side.Then make 1.5cm transverse incision in patient's tuberculum pubicum lateral border, cut
Skin, subcutaneous tissue are opened, blunt separation to superior ramus of pubis migrates place in tuberculum pubicum and superior ramus of pubis, as pubic symphysis
Separate bone bolt internal fixation device inlet point, first at this, point is transferred to one piece of guide pin and reaches opposite side inferior ramus of pubis or tuberculum pubicum, measure into
Needle length, the bone bolt self-tapping screw 1 that the diameter of reselection appropriate length is 0.8cm enter inferior ramus of pubis or pubis along guide pin direction
Tubercle and being pierced by from tap holder 1-1 by bone bolt self-tapping screw 1, then tightening pressurizing nut 3 clockwise makes bone bolt self tapping spiral shell
Bar 1 is displaced outwardly, while also being moved axially outward from tap holder 1-1, and the anti-back pawl 2-1 of 2 inner end of outer tube is made to strut into outer arcuate,
It simultaneously by elastic opening 2-2 also outside distending, is locked at Pubic symphysis diastasis bone bolt internal fixation device securely on tuberculum pubicum, prevents
Retaining nail, continuing to tighten pressurizing nut 3 fixes the pressurization of outer tube both ends, resets isolated pubic symphysis gradually, completion shame
The fixed operation of synostosis.If bone bolt self-tapping screw 1 has additional length, additional length can be fractureed by snap slot 1-3, be prevented
Surrounding tissue is oppressed.
After patient cures, when needing to take out fixator, since bone bolt is pierced by opposite side inferior ramus of pubis or tuberculum pubicum as out
Pin mark, pin mark is that should not cut at obturator nerve and blood vessel traveling out.Therefore fixator takes out carries out as follows: first
Pressurizing nut 3 is taken out, elastic washer 4 is successively taken out and stops circle 5, bone bolt self-tapping screw 1 is pushed into outer tube 2, makes bone
Bolt self-tapping screw 1 is separated from tap holder 1-1 with anti-back pawl 2-1 and elastic opening 2-2, and anti-back pawl 2-1 and elastic opening 2-2 are certainly
It resets and shrinks under the elastic force of body, then after the taking-up hole 2-4 on logical outer tube 2 slowly screws out outer tube 2, then by bone bolt self tapping spiral shell
Bar 1 takes out.
The above is the preferred embodiment of the utility model, and the example above illustrates the not reality to the utility model
Matter content makes any form of restriction, and person of an ordinary skill in the technical field is after having read this specification according to this reality
It is taken off with novel technical spirit to any simple modification or deformation made by the above specific embodiment, and possibly also with above-mentioned
The technology contents shown are changed or are modified to the equivalent embodiment of equivalent variations, still fall within technical solutions of the utility model
In range, without departing from the spirit and scope of the utility model.
Claims (8)
1. a kind of Pubic symphysis diastasis bone bolt internal fixation device, it by bone bolt self-tapping screw (1), outer tube (2), pressurizing nut (3),
Spring washer (4) and blocking circle (5) are constituted, it is characterised in that: and one end production of bone bolt self-tapping screw (1) has from tap holder (1-1),
The other end production of bone bolt self-tapping screw (1) has bone bolt needle handle (1-2) and bone bolt screw thread (1-4)；One end of outer tube (2) makes
There are anti-back pawl (2-1) and elastic opening (2-2), the other end production of outer tube (2) has taking-up hole (2-4), outside outer tube (2)
Production has casing threads (2-3) on wall；Outer tube (2) is sleeved on the outside of bone bolt self-tapping screw (1), bone bolt self-tapping screw (1)
Be placed in the anti-back pawl (2-1) of outer tube from tap holder (1-1), on the bone bolt screw thread (1-4) of bone bolt self-tapping screw (1) equipped with plus
It presses nut (3), the side of pressurizing nut (3) equipped with spring washer (4) and stops circle (5).
2. a kind of Pubic symphysis diastasis bone bolt internal fixation device according to claim 1, it is characterised in that: the pressurization spiral shell
Female (3) by spring washer (4) and stop circle (5) by bone bolt self-tapping screw when rotating clockwise on bone bolt self-tapping screw (1)
(1) the interior compression from tap holder (1-1) to outer tube (2), struts into outer arcuate for the anti-back pawl (2-1) of outer tube (2) right end, together
When by elastic opening (2-2) also outside distending.
3. a kind of Pubic symphysis diastasis bone bolt internal fixation device according to claim 1, it is characterised in that: the pressurization spiral shell
Female (3) unclamp pressurizing nut (3) and spring washer (4), by bone bolt self tapping when rotating counterclockwise on bone bolt self-tapping screw (1)
Screw rod (1) unclamps outside from tap holder (1-1) to outer tube (2), and the anti-back pawl (2-1) and elastic opening (2-2) of right end are at itself
Elastic force under reset.
4. a kind of Pubic symphysis diastasis bone bolt internal fixation device according to claim 1, it is characterised in that: the bone bolt is certainly
The left end production for attacking screw rod (1) has snap slot (1-3).
5. a kind of Pubic symphysis diastasis bone bolt internal fixation device according to claim 1, it is characterised in that: the anti-back pawl
(2-1) at least two, elastic opening (2-2) are at least three.
6. a kind of Pubic symphysis diastasis bone bolt internal fixation device according to claim 1, it is characterised in that: the bone bolt is certainly
Attacking screw rod (1) is hollow structure.
7. a kind of Pubic symphysis diastasis bone bolt internal fixation device according to claim 1, it is characterised in that: the bone bolt is certainly
The maximum gauge from tap holder (1-1) for attacking screw rod (1) is greater than the outer diameter of outer tube (2).
8. a kind of Pubic symphysis diastasis bone bolt internal fixation device according to claim 1, it is characterised in that: the blocking circle
(5) it is the arch for meeting pubis biological structure, circle (5) is stopped to be fixedly connected or be flexibly connected with one end of outer tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921417.0U CN208371870U (en) | 2017-07-27 | 2017-07-27 | A kind of Pubic symphysis diastasis bone bolt internal fixation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921417.0U CN208371870U (en) | 2017-07-27 | 2017-07-27 | A kind of Pubic symphysis diastasis bone bolt internal fixation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208371870U true CN208371870U (en) | 2019-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720921417.0U Expired - Fee Related CN208371870U (en) | 2017-07-27 | 2017-07-27 | A kind of Pubic symphysis diastasis bone bolt internal fixation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208371870U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297457A (en) * | 2020-03-30 | 2020-06-19 | 海城市正骨医院 | Relay type bone moving device based on gear power and using method |
-
2017
- 2017-07-27 CN CN201720921417.0U patent/CN208371870U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297457A (en) * | 2020-03-30 | 2020-06-19 | 海城市正骨医院 | Relay type bone moving device based on gear power and using method |
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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: 20190115 Termination date: 20210727 |