CN205903301U - Novel inflation nail - Google Patents
Novel inflation nail Download PDFInfo
- Publication number
- CN205903301U CN205903301U CN201620613593.3U CN201620613593U CN205903301U CN 205903301 U CN205903301 U CN 205903301U CN 201620613593 U CN201620613593 U CN 201620613593U CN 205903301 U CN205903301 U CN 205903301U
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- China
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- nail
- compression tube
- cylindrical cavity
- piston
- lock nut
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Abstract
The utility model discloses a novel inflation nail relates to orthopedic medical equipment technical field. The diameter of nail pole reduces from following closely point upper end to the head of a nail lower extreme of following closely the pole gradually, the inside cylindrical cavity that is of nail pole, the lateral wall of nail pole is opened on the circumferencial direction has the rectangular shape hole that switches on with the cylindrical cavity, every rectangular equal sealing connection in shape hole has the inflation strip, pressurization locking device includes forcing pipe, piston, transfer line, lock nut, first section inner wall of forcing pipe is equipped with the screw thread, lock nut is at first section of forcing pipe and pressurization pipe thread connection, second section inner wall of forcing pipe is smooth inner wall, the piston is located second section of forcing pipe and is connected with forcing pipe sliding seal, the piston passes through the transfer line with lock nut and is connected, the bottom of forcing pipe is provided with the through -hole that switches on with the cylindrical cavity, filling liquid has been held in the region between the bottom of cylindrical cavity and forcing pipe and the lower part of piston, the utility model discloses its structure is exquisite, conveniently puts into, and is little to patient's injury, fixed firm, and it is convenient to dismantle.
Description
Technical field
The present invention relates to orthopaedic medical treatment equipment technical field.
Background technology
It is known that spinal column non-fusion technology is on treatment spinal lesion, due to it, to have a damage to spinal column little, keeps
The mobility of spinal column and stability, the biomechanics characteristic of reconstruction of intervertebral disc, prevent and mitigate moving back of adjacent segment intervertebral disc
Become the advantages of accelerate, a lot of hospitals have begun to adopt in recent years, a piece of light of its application prospect.Make in spinal operation at present
Pedicle nail includes u staple seat and screw body, and screw body will can be in that the fixing of fixed angle connects with u staple seat
Connect it is also possible to connect into Universal screw nail through bulb, ball cup.Screw thread on the screw body of existing pedicle nail is mostly covered with
The constant worm pich of screw body, also has the single thread being in screw body first half, screw body latter half of for double thread.
Above-mentioned pedicle nail is screwed into pedicle of vertebral arch wastes time and energy, and screw thread is big, big to the damage of bone to the shear action of pedicle of vertebral arch, nail interface
Between contact tight, pedicle nail is easily deviate from；Especially the pedicle nail of existing structure is applied in the operation of spinal column non-fused,
Due to the movable property performed the operation between the spinal segments being related to, in recovery process after surgery, due to the activity of patient, screw body
There is the phenomenon of cutting sclerotin in the screw thread of upper end, recover very slow, or even there is the danger of pedicle nail easily abjection.
Content of the invention
The technical problem to be solved, is for above-mentioned technical deficiency, provides a kind of expansible bone
Nail, its delicate structure, conveniently insert, the injury to patient is little, fixation, convenient disassembly.
The technical solution used in the present invention is: provides a kind of expansible nail, the diameter of nail rod is from nail tip upper end to nail
The head of a nail lower end of bar is gradually reduced；It is cylindrical cavity inside nail rod；The side wall of nail rod has and cylindrical cavity in a circumferential direction
The elongate holes of conducting；Each elongate holes is all sealedly connected with Expandable strip；The transverse section of Expandable strip is arc；Described cylinder
Shape intracavity in the vertical direction embeds and is connected with locking and pressurizing device；Described locking and pressurizing device includes compression tube, piston, transmission
Bar, lock nut；The inwall of the upper semisection of compression tube is provided with screw thread；Above lock nut, middle part is provided with interior hexagonal screw；
Lock nut is threadeded with compression tube in compression tube upper semisection；The lower semisection inwall of compression tube is smooth inner wall；Piston is located at
The lower semisection of compression tube is connected with compression tube slipper seal；Piston is connected by drive link with lock nut；The bottom of compression tube
It is provided with the through hole with cylindrical cavity conducting；Hold in region between the bottom of cylindrical cavity and compression tube and the bottom of piston
There is filling liquid；The top surface of nail rod is provided with and is conducting to circular hole with cylindrical cavity；The upper end of compression tube and circular hole Butt sealing.
Optimize the technical program further, the circular hole of expansible nail and the upper end of compression tube are sealed with envelope
Cap.
Optimize the technical program further, the outer surface of the nail rod of expansible nail is coated with polytetrafluorethylecoatings coatings.
Optimize the technical program further, the taper that the outer surface of the Expandable strip of expansible nail is uniformly provided with positions
Point.
The invention has the beneficial effects as follows:
1st, in the technical program, nail rod body does not have screw thread, and does not lodge the frictional force reality of screw thread or outer surface
The now fixation with skeleton, in implantation process, will not produce about cutting to skeleton, contribute to reducing secondary injury.For bone
The fixation of bone, the technical program adopts first to be inserted with small diameter, is expanded subsequently into after bone hole, makes diameter become big, makes
Nail rod itself is firmly connected with bone hole.The structure that nail rod is originally constituted as hard material, ensure that fixing intensity, spin locking
, there is elastic deformation by Expandable strip after pressurization in piston pressurization filling liquid, cylindrical cavity, cling on bone hole wall, especially in nut
It is the diameter of nail rod by being gradually reduced under upper, so fixation is more firm.
2nd, compression tube and lock nut can be encapsulated in inside cylindrical cavity by sealing cap, so can reduce inside nail
It is infected with, facilitate nail to dismantle.
3rd, politef has extremely strong non-stick, so can reduce the frictional force inserting in bone hole, reduce simultaneously
The resistance that nail takes out.
4th, under Expandable strip contraction state, taper locating tip does not affect the implantation of nail, after cylindrical cavity is pressurized, taper
Locating tip can increase the contact fastness that nail rod is with bone hole wall, strengthens the resistance to tension of nail.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the axial decomposing schematic representation of Fig. 1；
Fig. 3 is the structural representation after present invention locking.
In figure, 1, nail rod；2nd, nail tip；3rd, the head of a nail；4th, cylindrical cavity；5th, elongate holes；6th, Expandable strip；7th, compression tube；8、
Piston；9th, drive link；10th, lock nut；11st, sealing cap；12nd, screw thread；13rd, interior hexagonal screw；14th, through hole；15th, circular hole；16th, bore
Shape locating tip.
Specific embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
As Figure 1-3, expansible nail includes nail rod 1, and the diameter of nail rod 1 is from nail tip 2 upper end to the head of a nail of nail rod 1
3 lower ends are gradually reduced；Nail rod 1 is internal to be cylindrical cavity 4；The side wall of nail rod 1 is had in a circumferential direction and is turned on cylindrical cavity 4
Elongate holes 5；Each elongate holes 5 is all sealedly connected with Expandable strip 6；The transverse section of Expandable strip 6 is arc；Described cylinder
In shape chamber 4, in the vertical direction embeds and is connected with locking and pressurizing device；Described locking and pressurizing device include compression tube 7, piston 8,
Drive link 9, lock nut 10；The inwall of the upper semisection of compression tube 7 is provided with screw thread 12；Above lock nut 10, middle part is provided with
Interior hexagonal screw 13；Lock nut 10 is threadeded with compression tube 7 in compression tube 7 upper semisection；The lower semisection inwall of compression tube 7 is
Smooth inner wall；The lower semisection that piston 8 is located at compression tube 7 is connected with compression tube 7 slipper seal；Piston 8 is passed through with lock nut 10
Drive link 9 connects；The bottom of compression tube 7 is provided with the through hole 14 with cylindrical cavity 4 conducting；Cylindrical cavity 4 and the bottom of compression tube 7
It is contained with filling liquid in region between the bottom of portion and piston 8；The top surface of nail rod 1 is provided with and is conducting to circle with cylindrical cavity 4
Hole 15；The upper end of compression tube 7 and circular hole 15 Butt sealing；The upper end of circular hole 15 and compression tube 7 is sealed with sealing cap 11；Nail
The outer surface of bar 1 is coated with polytetrafluorethylecoatings coatings；The taper locating tip 16 that the outer surface of Expandable strip 6 is uniformly provided with.
In the present embodiment, central principle is by piston 8, filling liquid to be pressurizeed, and filling liquid promotes the elastic shape of Expandable strip 6
Become, the elastic deformation of Expandable strip 6 can increase the diameter of nail rod 1, and this process is reversible.
The present embodiment, when using, takes off sealing cap 11 first, then using hexagon socket head cap screw spin locking nut 10, makes work
Move on plug 8, the amount that filling liquid takes in compression tube 7 bottom increases, and the pressure in cylindrical cavity 4 reduces, Expandable strip 6 is in contraction-like
State (with reference to Fig. 1)；Then insert nail, reversely rotate lock nut 10 after inserting, now in cylindrical cavity 4, pressure increases, swollen
As Fig. 3, now Expandable strip 6 is close to bone hole side wall to the elastic deformation of swollen bar 6, and taper locating tip 16 is firmly connect with bone hole side wall
Touch, even into a bone hole side wall part.Finally sealing cap 11 is buckled on circular hole 15.It should be noted that sealing cap 11 envelope
Before dress, solvable solidification material, such as solubility photosensitive resin can be poured into compression tube 7.Lock nut so can be prevented
10 loosen.
Claims (4)
1. a kind of expansible nail it is characterised in that: include nail rod (1), the diameter of nail rod (1) is from nail tip (2) upper end to following closely
The head of a nail (3) lower end of bar (1) is gradually reduced；It is cylindrical cavity (4) inside nail rod (1)；The side wall of nail rod (1) is in a circumferential direction
Have the elongate holes (5) turning on cylindrical cavity (4)；Each elongate holes (5) are all sealedly connected with Expandable strip (6)；Expand
The transverse section of bar (6) is arc；The described interior in the vertical direction of cylindrical cavity (4) embeds and is connected with locking and pressurizing device；Institute
State locking and pressurizing device and include compression tube (7), piston (8), drive link (9), lock nut (10)；The upper semisection of compression tube (7)
Inwall be provided with screw thread (12)；Above lock nut (10), middle part is provided with interior hexagonal screw (13)；Lock nut (10) exists
Compression tube (7) upper semisection is threadeded with compression tube (7)；The lower semisection inwall of compression tube (7) is smooth inner wall；Piston (8) position
Lower semisection in compression tube (7) is connected with compression tube (7) slipper seal；Piston (8) passes through drive link (9) with lock nut (10)
Connect；The bottom of compression tube (7) is provided with the through hole (14) turning on cylindrical cavity (4)；Cylindrical cavity (4) and compression tube (7)
Bottom and the bottom of piston (8) between region in be contained with filling liquid；The top surface of nail rod (1) is provided with and cylindrical cavity
(4) it is conducting to circular hole (15)；The upper end of compression tube (7) and circular hole (15) Butt sealing.
2. expansible nail according to claim 1 it is characterised in that: the upper end of circular hole (15) and compression tube (7)
It is sealed with sealing cap (11).
3. expansible nail according to claim 2 it is characterised in that: the outer surface of nail rod (1) is coated with polytetrafluoro
Vinyl coating.
4. expansible nail according to claim 3 it is characterised in that: the outer surface of Expandable strip (6) is uniformly provided with
Taper locating tip (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620613593.3U CN205903301U (en) | 2016-06-22 | 2016-06-22 | Novel inflation nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620613593.3U CN205903301U (en) | 2016-06-22 | 2016-06-22 | Novel inflation nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205903301U true CN205903301U (en) | 2017-01-25 |
Family
ID=57811981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620613593.3U Active CN205903301U (en) | 2016-06-22 | 2016-06-22 | Novel inflation nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205903301U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107981926A (en) * | 2017-09-20 | 2018-05-04 | 北京航空航天大学 | The new resistance to plucking based on increases material manufacturing technology goes out pedicle nail |
| CN112674859A (en) * | 2019-10-17 | 2021-04-20 | 贺利氏医疗有限公司 | Device for topical administration of a medicinal fluid and/or for irrigation with a medicinal fluid |
-
2016
- 2016-06-22 CN CN201620613593.3U patent/CN205903301U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107981926A (en) * | 2017-09-20 | 2018-05-04 | 北京航空航天大学 | The new resistance to plucking based on increases material manufacturing technology goes out pedicle nail |
| CN112674859A (en) * | 2019-10-17 | 2021-04-20 | 贺利氏医疗有限公司 | Device for topical administration of a medicinal fluid and/or for irrigation with a medicinal fluid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |