CN109938822A - The installation tool of bone cement screw - Google Patents
The installation tool of bone cement screw Download PDFInfo
- Publication number
- CN109938822A CN109938822A CN201711397672.0A CN201711397672A CN109938822A CN 109938822 A CN109938822 A CN 109938822A CN 201711397672 A CN201711397672 A CN 201711397672A CN 109938822 A CN109938822 A CN 109938822A
- Authority
- CN
- China
- Prior art keywords
- bone cement
- inner sleeve
- cement screw
- rear end
- handle
- 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.)
- Pending
Links
- 239000002639 bone cement Substances 0.000 title claims abstract description 56
- 238000009434 installation Methods 0.000 title claims abstract description 18
- 230000000903 blocking effect Effects 0.000 claims abstract description 15
- 210000000988 bone and bone Anatomy 0.000 abstract description 8
- 238000004140 cleaning Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 208000001132 Osteoporosis Diseases 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000020307 Spinal disease Diseases 0.000 description 1
- 102000008579 Transposases Human genes 0.000 description 1
- 108010020764 Transposases Proteins 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
Abstract
The present invention provides a kind of installation tool of bone cement screw, bone cement screw includes ailhead and rivet nut, rivet nut is provided with centre bore along axial direction, installation tool includes outer tube, inner sleeve is equipped in outer tube, the front end of the outer tube is equipped with the external screw thread cooperated with bone cement screw ailhead, the front end of the inner sleeve is equipped with the turret head cooperated with bone cement screw rivet nut centre bore, the rear end of the inner sleeve and handle are cooperatively connected, handle is provided with through-hole along inner sleeve length direction, bar is blocked to penetrate from handle rear end and be pierced by from inner sleeve front end, the rear end for blocking bar and the rear end of handle are detachably connected.The present invention can prevent cancellous bone from blocking centre bore when bone cement screw is screwed into vertebra, reduce subsequent blocking cleaning work when being implanted into bone cement screw.
Description
Technical field
The present invention relates to spinal operation medical instrument more particularly to a kind of installation tools of bone cement screw.
Background technique
Currently, more and more sufferers of osteoporosis face need to carry out operation fixation because of spinal disease.
The fixed mainstream of spinal operation is screw-rod immobilization treatment；However in actual operation, because osteoporosis is tight
Ghost image rings the bond strength of nail bone interface, declines the holding power of bone screws, frequently results in bone screws and loosens, exits.Therefore, originally
Field technical staff has investigated bone cement screw, it is substituted to the pedicle of vertebral arch in tradition nail stick operation in spinal surgery
Screw prevents from loosening to effectively improve stability under the conditions of osteoporosis.
Existing bone cement screw design majority is the aperture in the rivet nut of screw, in order to inject bone cement, reinforces spiral shell
The bond strength of nail and sclerotin, however hollow bone cement screw, during being placed in vertebra, cancellous bone is readily along rivet nut
On bone cement hole squeeze into rivet nut, lead to the center hole plug of bone cement screw so that bone cement can not be successfully injection centrum, shadow
Ring the technical effect used.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of easy to use and operate, effectively avoid in bone cement screw
The installation tool of the bone cement screw of heart hole plug, to overcome the defect in the prior art.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of installation tool of bone cement screw,
Bone cement screw includes ailhead and rivet nut, and rivet nut is provided with centre bore along axial direction, and installation tool includes outer tube, is equipped in outer tube
Inner sleeve, the front end of the outer tube are equipped with the external screw thread cooperated with bone cement screw ailhead, and the front end of the inner sleeve is equipped with
With the turret head of bone cement screw rivet nut centre bore cooperation, the rear end of the inner sleeve and handle are cooperatively connected, and handle is along inner sleeve
Length of tube direction is provided with through-hole, blocks bar and penetrates from handle rear end and be pierced by from inner sleeve front end, the front end for blocking bar can insert
Enter the centre bore of bone cement screw rivet nut, the rear end of the closure bar and the rear end of handle are detachably connected.
Preferably, the rear end of the inner sleeve is equipped with card slot, and the handle includes interconnecting piece and driving portion, and interconnecting piece is circle
Cylindricality and it is provided with the mounting hole for installing inner sleeve along axial direction, is provided with through-hole perpendicular to mounting hole, is equipped with the decorative pearl on top of an official cap in through-hole,
Sliding sleeve is arranged on interconnecting piece, the sliding sleeve presses against the decorative pearl on top of an official cap in card slot.
Preferably, the rear end of the outer tube is equipped with swivel base.
Preferably, the rear end for blocking bar is threadedly coupled with the rear end of handle.
Preferably, the closure bar includes leading portion and back segment, and the diameter of the leading portion is less than the diameter of back segment, and leading portion
Length be less than back segment length.
As described above, the installation tool of bone cement screw of the present invention, has the advantages that
When being implanted into bone cement screw, the centre bore by blocking bar and bone cement screw cooperates the present invention, can be in bone
Cement screw blocks centre bore when being screwed into vertebra, prevents cancellous bone from blocking centre bore when bone cement screw is screwed into vertebra, to rear
Continuous surgical procedure brings great convenience, and avoids subsequent block clearing operation, ensure that working efficiency, and operate letter
It is single.
Detailed description of the invention
Fig. 1 is topology view of the invention.
Fig. 2 is broken away view of the invention.
Fig. 3 is the cross-sectional view of handle in the present invention.
Fig. 4 is the cooperation schematic diagram of the present invention with bone cement screw.
Fig. 5 is the cooperation cross-sectional view of the present invention with bone cement screw.
Fig. 6 is enlarged drawing at A in Fig. 5.
Fig. 7 is enlarged drawing at B in Fig. 5.
In figure:
1 outer tube, 2 inner sleeve
3 handles 4 block bar
11 swivel base, 21 card slot
31 interconnecting piece, 32 driving portion
33 decorative pearl on top of an official cap, 34 sliding sleeve
35 actuating sleeve, 36 spring
100 bone cement screw, 101 ailhead
102 rivet nut, 311 mounting hole
Specific embodiment
Structure depicted in Figure of description, ratio, size etc., only to cooperate the revealed content of specification, with
Understand for those skilled in the art and read, be not intended to limit the invention enforceable qualifications, therefore does not have technically
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size can be generated not influencing the present invention
Under effect and the purpose that can reach, it should all fall in the range of disclosed technology contents can cover.Meanwhile this
Cited such as "upper", "lower", "front", "rear", " centre " term in specification are merely convenient to being illustrated for narration, rather than
To limit the scope of the invention, relativeness is altered or modified, under the content of no substantial changes in technology, when also
It is considered as the enforceable scope of the present invention.
In conjunction with Fig. 1-Fig. 3, the present invention is a kind of installation tool of bone cement screw, and bone cement screw includes ailhead and nail
Body, rivet nut are provided with centre bore along axial direction, and installation tool includes outer tube 1, are equipped with inner sleeve 2, the outer tube 1 in outer tube 1
Front end be equipped with the external screw thread that cooperate with bone cement screw ailhead, the front end of the inner sleeve 2 equipped with and bone cement screw rivet nut
The turret head of centre bore cooperation, the rear end of the inner sleeve 2 and handle 3 are cooperatively connected, and handle 3 is provided with along inner sleeve length direction
Through-hole blocks bar 4 and penetrates from 3 rear end of handle and be pierced by from 2 front end of inner sleeve.The rear end of the rear end for blocking bar 4 and handle 3
It is detachably connected.When the present invention and bone cement screw cooperate, the front end for blocking bar 4 is inserted into the center of bone cement screw rivet nut
Hole, i.e. closure bar 4 are adapted with the size of centre bore to realize plugging action.
With reference to Fig. 4 and Fig. 6, bone cement screw 100 includes ailhead 101 and rivet nut 102, and rivet nut 101 is provided with axial center
Hole and radial through-hole.In conjunction with Fig. 1-Fig. 7, application method of the invention and principle are:
(1) first inner sleeve 2 is inserted into cooperate in the centre bore of ailhead 101 and is stablized；The centre bore of inner sleeve 2 and ailhead 101
Generally cooperated using turret head, avoids relatively rotating.
(2) internal screw thread of the external screw thread and ailhead 101 of 1 front end of outer tube is threadedly engaged.
(3) rear end of inner sleeve 2 and handle 3 are cooperatively connected；Then bar 4 will be blocked to be inserted into from the rear end of handle 3, blocked
The front end of bar 4 is pierced by from the front end of inner sleeve 2 into the centre bore of rivet nut 102, and blocking 4 front end of bar cannot be from the centre bore
It is pierced by, blocking bar 4 is to play cancellous bone when preventing bone cement screw 100 from screwing in vertebra to enter in centre bore, it is ensured that later period bone
Cement is efficiently entering vertebra.
(4) Fig. 4 is referred to, is outer tube 1, inner sleeve 2, handle 3, blocks the signal after bar 4 and the cooperation of bone cement screw 100
Figure；In the predeterminated position of vertebra, bone cement screw 100 is implanted by rotational handle 3, if producing cancellous bone in implantation process,
Then because blocking the effect of bar 4, centre bore will not be entered.After being implanted into place, bar 4 will be blocked and removed from handle 3, made
The subsequent operations such as bone cement are filled into centre bore with the instrument of note bone cement.Last rotating jacket pipe 1 releases and bone cement spiral shell
The cooperation of nail 100, the present invention is removed.
In a preferred embodiment, in conjunction with Fig. 2, Fig. 3, Fig. 5 and Fig. 7, the rear end of the inner sleeve 2 is equipped with card slot 21, described
Handle 3 includes interconnecting piece 31 and driving portion 32, and interconnecting piece 31 is cylindrical and is provided with the peace for installing inner sleeve 2 along axial direction
Hole 311 is filled, through-hole is provided with perpendicular to mounting hole 311, the decorative pearl on top of an official cap 33 is equipped in through-hole, is arranged with sliding sleeve 34 on interconnecting piece 31, it is described
Sliding sleeve 34 presses against the decorative pearl on top of an official cap 33 in card slot 21.Specifically combine Fig. 3 and Fig. 7: sliding sleeve 34 is externally provided with actuating sleeve 35, and actuating sleeve 35 exists
The end of interconnecting piece 31 is inwardly formed boss, and axial setting spring 36 is equipped between actuating sleeve 35 and interconnecting piece 31, spring 36
One end is connected on boss, and the other end is connected on sliding sleeve 34, as arrow direction in Fig. 7 will drive when cooperating with inner sleeve 2
Dynamic set 35 moves to the right, and sliding sleeve 34 is no longer press against the decorative pearl on top of an official cap 33, and interconnecting piece 31, card slot 21 and the decorative pearl on top of an official cap 33 are inserted into 2 rear end of inner sleeve
Position is corresponding；Actuating sleeve 35 is unclamped, spring 36 drives actuating sleeve 35 and sliding sleeve 34 to spring back, and the decorative pearl on top of an official cap 33 is pressed into card slot by sliding sleeve 34
21, card slot 21 and 33 locking of the decorative pearl on top of an official cap realize the mating connection of inner sleeve 2 and handle 3.When dismantling inner sleeve 2, actuating sleeve 35 is to the right
Side is mobile, and inner sleeve 2 is extracted, then unclamps actuating sleeve 35 by the unlock of 33 position of the decorative pearl on top of an official cap.
As shown in Figure 1, the rear end of the outer tube 1 is equipped with transposase 11 1, it is convenient for operator's hand-held.
With reference to Fig. 2, in a preferred embodiment, the rear end for blocking bar 4 is threadedly coupled with the rear end of handle 3.
With reference to Fig. 2, the closure bar 4 includes leading portion and back segment, and the diameter of the leading portion is less than the diameter of back segment, and preceding
The length of section is less than the length of back segment.The diameter of back segment is bigger, and length is longer, can guarantee to block the whole intensity of bar 4, and preceding
Plugging action is played in the section mainly centre bore of insertion bone cement screw.
In conclusion the installation tool of bone cement screw of the present invention, effectively overcomes and more in the prior art actually ask
Topic is to have very high utility value and use meaning.
The principle of the present invention and its effect is only illustrated in above embodiment, and is not intended to limit the present invention.This hair
It is bright to be improved under the premise of without prejudice to overall thought there are many more aspect, it all can be for those skilled in the art
Without prejudice under spirit and scope of the invention, can carry out modifications and changes to above-described embodiment.Therefore, technical field such as
Middle all equivalent modifications for being completed without departing from the spirit and technical ideas disclosed in the present invention of tool usually intellectual or
Change, should be covered by the claims of the present invention.
Claims (5)
1. a kind of installation tool of bone cement screw, bone cement screw include ailhead and rivet nut, rivet nut is provided with centre bore along axial direction,
It is characterized by: installation tool includes outer tube (1), inner sleeve (2) are equipped in outer tube (1), the front end of the outer tube (1)
Equipped with the external screw thread cooperated with bone cement screw ailhead, the front end of the inner sleeve (2) is equipped with and bone cement screw rivet nut center
The turret head of hole cooperation, the rear end and handle (3) of the inner sleeve (2) are cooperatively connected, and handle (3) is opened along inner sleeve length direction
There is through-hole, blocks bar (4) and penetrate from handle (3) rear end and be pierced by from inner sleeve (2) front end, the front end for blocking bar (4) can insert
Enter the centre bore of bone cement screw rivet nut, the rear end of closure bar (4) and the rear end of handle (3) are detachably connected.
2. the installation tool of bone cement screw according to claim 1, it is characterised in that: the rear end of the inner sleeve (2)
Equipped with card slot (21), the handle (3) includes interconnecting piece (31) and driving portion (32), and interconnecting piece (31) is cylindrical and along axis
To the mounting hole being provided with for installing inner sleeve (2), it is provided with through-hole perpendicular to mounting hole, is equipped with the decorative pearl on top of an official cap (33) in through-hole, connection
It is arranged in portion (31) sliding sleeve (34), the sliding sleeve (34) presses against the decorative pearl on top of an official cap (33) in card slot (21).
3. the installation tool of bone cement screw according to claim 1, it is characterised in that: the rear end of the outer tube (1)
Equipped with swivel base (11).
4. the installation tool of bone cement screw according to claim 1, it is characterised in that: the rear end for blocking bar (4)
It is threadedly coupled with the rear end of handle (3).
5. the installation tool of bone cement screw according to claim 1, it is characterised in that: before the closure bar (4) includes
Section and back segment, the diameter of the leading portion is less than the diameter of back segment, and the length of leading portion is less than the length of back segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397672.0A CN109938822A (en) | 2017-12-21 | 2017-12-21 | The installation tool of bone cement screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397672.0A CN109938822A (en) | 2017-12-21 | 2017-12-21 | The installation tool of bone cement screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109938822A true CN109938822A (en) | 2019-06-28 |
Family
ID=67006111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711397672.0A Pending CN109938822A (en) | 2017-12-21 | 2017-12-21 | The installation tool of bone cement screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109938822A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112057679A (en) * | 2020-09-14 | 2020-12-11 | 北京邦塞科技有限公司 | Implant for preventing bone cement leakage, preparation method and application thereof, kit for preventing bone cement leakage and use method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090264895A1 (en) * | 2008-04-22 | 2009-10-22 | Warsaw Orthopedic, Inc. | Systems and methods for implanting a bone fastener and delivering a bone filling material |
| CN201743754U (en) * | 2010-08-30 | 2011-02-16 | 中国人民解放军第四军医大学 | Perfusion fixator |
| CN102973314A (en) * | 2011-09-07 | 2013-03-20 | 常州市康辉医疗器械有限公司 | Thoracolumbar spine posterior minimally invasive bone cement spine internal fixation system and application |
| CN103271763A (en) * | 2013-05-22 | 2013-09-04 | 苏州爱得科技发展有限公司 | Combined replacing type Stryker nail installing device |
| CN205514865U (en) * | 2015-12-14 | 2016-08-31 | 张兴 | Become rail formula bone cement filled device |
| CN208910458U (en) * | 2017-12-21 | 2019-05-31 | 上海三友医疗器械股份有限公司 | The installation tool of bone cement screw |
-
2017
- 2017-12-21 CN CN201711397672.0A patent/CN109938822A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090264895A1 (en) * | 2008-04-22 | 2009-10-22 | Warsaw Orthopedic, Inc. | Systems and methods for implanting a bone fastener and delivering a bone filling material |
| CN201743754U (en) * | 2010-08-30 | 2011-02-16 | 中国人民解放军第四军医大学 | Perfusion fixator |
| CN102973314A (en) * | 2011-09-07 | 2013-03-20 | 常州市康辉医疗器械有限公司 | Thoracolumbar spine posterior minimally invasive bone cement spine internal fixation system and application |
| CN103271763A (en) * | 2013-05-22 | 2013-09-04 | 苏州爱得科技发展有限公司 | Combined replacing type Stryker nail installing device |
| CN205514865U (en) * | 2015-12-14 | 2016-08-31 | 张兴 | Become rail formula bone cement filled device |
| CN208910458U (en) * | 2017-12-21 | 2019-05-31 | 上海三友医疗器械股份有限公司 | The installation tool of bone cement screw |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112057679A (en) * | 2020-09-14 | 2020-12-11 | 北京邦塞科技有限公司 | Implant for preventing bone cement leakage, preparation method and application thereof, kit for preventing bone cement leakage and use method thereof |
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