CN203591321U - Hollow lateral hole pedicle screw centrum reinforcement bone cement syringe - Google Patents
Hollow lateral hole pedicle screw centrum reinforcement bone cement syringe Download PDFInfo
- Publication number
- CN203591321U CN203591321U CN201320652569.7U CN201320652569U CN203591321U CN 203591321 U CN203591321 U CN 203591321U CN 201320652569 U CN201320652569 U CN 201320652569U CN 203591321 U CN203591321 U CN 203591321U
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- China
- Prior art keywords
- pedicle screw
- hollow
- syringe
- bone cement
- side opening
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- 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.)
- Expired - Lifetime
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- 239000002639 bone cement Substances 0.000 title claims abstract description 29
- 230000002787 reinforcement Effects 0.000 title abstract 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000001009 osteoporotic effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 206010061218 Inflammation Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000001132 Osteoporosis Diseases 0.000 description 1
- 230000037118 bone strength Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000005786 degenerative changes Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009758 senescence Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model discloses a hollow lateral hole pedicle screw centrum reinforcement bone cement syringe. The syringe is composed of a inner core, a syringe cylinder, an outer sleeve, and a cross-shaped syringe nozzle, which are connected sequentially. The inner core is composed of a first handle and an inner rod. The syringe cylinder is composed of a second handle and an outer tube. The outer sleeve is composed of a hand-held part and a tubular part. An opening is arranged in one side of the lower end of the tubular part. The outer edge of the bottom end of the tubular part protrudes to form screw threads. The cross-shaped syringe nozzle is composed an upper end vertical part, a horizontal part, and a lower end vertical part sequentially from the top to the bottom. The syringe can be tightly combined with a hollow lateral hole pedicle screw in multiple modes and increase the operability of bone cement injection, thereby enabling the bone cement to be accurately injected along the hollow part and side hole of the hollow lateral hole pedicle screw into a screw road of the screw to achieve the centrum reinforcement effect and increase the internal fixing system stability.
Description
Technical field
This utility model relates to medical equipment technical field, particularly relates to a kind of hollow side opening pedicle screw Vertebroplasty bone cement injector.
Background technology
Via Posterior Spinal Approach vertebral fixity system is widely used in the surgical operation therapies such as spinal trauma, deformity, degenerative change at present.The deformity of correcting spinal column by the interaction of nail, hook, rod, the stability of recovery spinal column.Wherein, pedicle screw is anchored on vertebral body above provides the supporting role of mechanics for whole Via Posterior Spinal Approach vertebral fixity system.But along with increasing the weight of of entire society's senescence trend, the bone destruction that osteoporotic patient increases year by year and can cause due to tumor, inflammation etc. causes osteoporosis.On osteoporotic patient vertebral body, the bone strength due to vertebral body declines when grappling pedicle screw, can not on the interface of sclerotin-screw, form enough holds and the crystallized ability of pedicle screw is declined, thereby screw loosening is deviate from and be affected the stability of vertebral fixity system and cause operative failure.
Using hollow side opening pedicle screw can solve in above-mentioned osteoporotic bone uses pedicle screw easily to produce the problem of screw loosening.Can be by the hollow of hollow side opening pedicle screw hollow and side opening inject bone cement to hollow side opening pedicle screw Ding road and strengthen sclerotin-screw interface, the hold that improves screw reaches the stability that maintains vertebral fixity system.
At present, not yet have clinically special hollow side opening pedicle screw bone cement injector, clinical general medical syringe does not mate with hollow side opening pedicle screw.Use universal syringe to inject in the process of bone cement in hollow side opening pedicle screw, due to the internal diameter of syringe needle and hollow side opening pedicle screw and the U-shaped base length of screw inconsistent, can not be accurately chimeric with screw inner hollow diameter, and cause in injection process producing bone cement seepage, and therefore make bone cement can not be along the hollow of hollow side opening screw hollow and side opening enter screw Ding road and bring into play the invigoration effect of pedicle screw, can not reach the Expected Results of operation.
Summary of the invention
The purpose of this utility model is, a kind of new hollow side opening pedicle screw Vertebroplasty bone cement injector is provided, this hollow side opening pedicle screw Vertebroplasty bone cement injector, can accurately combine closely with hollow side opening pedicle screw, bone cement is injected to screw nail road by hollow side opening pedicle screw hollow and side opening and realize Vertebroplasty, reduce screw loosening probability, strengthen Via Posterior Spinal Approach vertebral fixity system stability.
In order to realize above-mentioned task, the technical solution adopted in the utility model is:
A kind of hollow side opening pedicle screw Vertebroplasty bone cement injector, is characterized in that, connected and composed successively by inner core, syringe barrel, outer side sleeve, cross syringe nozzle, wherein, described inner core is made up of first handle and interior bar; Described syringe socket is made up of second handle and outer tube; Described outer side sleeve is made up of handgrip part and tubular portion, and tubular portion lower end one side is provided with opening, and outer, bottom is protruded and formed screw thread; Described cross syringe nozzle is followed successively by upper end vertical component, horizontal component and lower end vertical component from top to bottom, wherein, the upper end of upper end vertical component is hollow cylindrical, it is cone-shaped that lower end is, upper end vertical component smooth transition is also connected with horizontal component, horizontal component is the entity structure that side is " U " shape, and the upper end of lower end vertical component is hollow cylindrical, and lower end is taper.
Other feature of the present utility model is:
The handgrip part both sides of described outer side sleeve are plane, and the diameter of tubular portion inside is greater than syringe barrel external diameter; Outer, bottom screw thread is for chimeric with the female thread of hollow side opening pedicle screw " U " shape base.
The internal diameter of hollow cylindrical and the outer tube of syringe barrel of the vertical component upper end, upper end of described cross syringe nozzle match; The transverse diameter that the side of described horizontal component is the entity structure of " U " shape is used for matching with hollow side opening pedicle screw " U " shape base transverse diameter; The external diameter of the hollow cylindrical of the upper end of described lower end vertical component and the internal diameter of hollow side opening pedicle screw match.
Hollow side opening pedicle screw Vertebroplasty bone cement injector of the present utility model, compared with prior art, the beneficial effect bringing is: make hollow side opening pedicle screw Vertebroplasty bone cement injector of the present utility model by the effect of outer side sleeve and syringe nozzle, combine closely with hollow side opening pedicle screw, increase the operability that bone cement injects, thereby make bone cement accurately reach Vertebroplasty effect along hollow side opening pedicle screw hollow and side opening injection screw nail road, improve the stability of internal fixation system.
Accompanying drawing explanation
Fig. 1 is hollow side opening pedicle screw Vertebroplasty bone cement injector overall structure schematic diagram of the present utility model;
Fig. 2 is core arrangement schematic diagram;
Fig. 3 is syringe barrel structural representation;
Fig. 4 is outer side sleeve structural representation;
Fig. 5 is cross syringe nozzle structural representation;
Below in conjunction with drawings and Examples, this utility model is further illustrated.
The specific embodiment
Shown in Fig. 1～Fig. 5, the present embodiment provides a kind of concrete structure of hollow side opening pedicle screw Vertebroplasty bone cement injector, is connected and composed successively by inner core 1, syringe barrel 2, outer side sleeve 3, cross syringe nozzle 4.Wherein:
Inner core 1 is made up of first handle 11 and interior bar 12; Syringe socket 2 is made up of second handle 21 and outer tube 22; Outer side sleeve 3 is made up of handgrip part 31 and tubular portion 32, and tubular portion 32 lower end one sides are provided with opening 33, and outer, bottom is protruded and formed screw thread 34.
In the present embodiment, handgrip part 31 both sides of outer side sleeve 3 are plane, and the diameter of tubular portion 32 inside is greater than syringe barrel 2 external diameters; Outer, bottom screw thread 34 is for chimeric with the female thread of hollow side opening pedicle screw " U " shape base.
The internal diameter of hollow cylindrical and the outer tube 22 of syringe barrel 2 of upper end vertical component 41 upper ends of cross syringe nozzle 4 match; The transverse diameter that the side of described horizontal component 42 is the entity structure of " U " shape is used for matching with hollow side opening pedicle screw " U " shape base transverse diameter; The external diameter of the hollow cylindrical of the upper end of described lower end vertical component 43 and the internal diameter of hollow side opening pedicle screw match.
The hollow side opening pedicle screw Vertebroplasty bone cement injector of the present embodiment, while use in operation process, the hollow of hollow side opening pedicle screw of first the taper lower end aligned of the lower end vertical component 43 of cross syringe nozzle 4 having been squeezed into vertebral body is hollow, gradually the hollow circuit cylinder of the upper end of lower end vertical component 43 is inserted in hollow side opening, the horizontal component 43 that now side is " U " shape is combined closely with " U " shape base of hollow side opening pedicle screw, stablizes cross syringe nozzle 4.Outer side sleeve 3 is displaced downwardly to hollow side opening pedicle screw " U " shape base, rotate outer side sleeve 3 by outer side sleeve 3 outer, bottom screw threads 34, be screwed into the female thread of sky side opening pedicle screw " U " shape base, thereby the pedicle of vertebral arch screw that is fixed on hollow side opening nails on, and is convenient to operation technique and carries out.
The tubular portion 32 of outer side sleeve 3 is enclosed within the outside of syringe barrel 2, and closely stranded with the female thread of hollow side opening pedicle screw " U " shape base with its outer, lower end screw thread 34, firm hollow side opening pedicle screw Vertebroplasty bone cement injector, thus being convenient to control is beneficial to operation technique.
Claims (3)
1. a hollow side opening pedicle screw Vertebroplasty bone cement injector, it is characterized in that, connected and composed successively by inner core (1), syringe barrel (2), outer side sleeve (3), cross syringe nozzle (4), wherein, described inner core (1) forms (12) by first handle (11) and interior bar; Described syringe socket (2) is made up of second handle (21) and outer tube (22); Described outer side sleeve (3) is made up of handgrip part (31) and tubular portion (32), and tubular portion (32) lower end one side is provided with opening (33), and outer, bottom is protruded and formed screw thread (34); Described cross syringe nozzle (4) is followed successively by upper end vertical component (41), horizontal component (42) and lower end vertical component (43) from top to bottom, wherein, the upper end of upper end vertical component (41) is hollow cylindrical, it is cone-shaped that lower end is, vertical component (41) smooth transition in upper end is also connected with horizontal component (42), horizontal component (42) is the entity structure of " U " shape for side, and the upper end of lower end vertical component (43) is hollow cylindrical, and lower end is taper.
2. hollow side opening pedicle screw Vertebroplasty bone cement injector as claimed in claim 1, it is characterized in that, handgrip part (31) both sides of described outer side sleeve (3) are plane, and the inner diameter of tubular portion (32) is greater than syringe barrel (2) external diameter; Outer, bottom screw thread (34) is for chimeric with the female thread of hollow side opening pedicle screw " U " shape base.
3. hollow side opening pedicle screw Vertebroplasty bone cement injector as claimed in claim 1, it is characterized in that, the internal diameter of hollow cylindrical and the outer tube (22) of syringe barrel (2) of upper end vertical component (41) upper end of described cross syringe nozzle (4) match; The transverse diameter that the side of described horizontal component (42) is the entity structure of " U " shape is used for matching with hollow side opening pedicle screw " U " shape base transverse diameter; The external diameter of hollow cylindrical and the internal diameter of hollow side opening pedicle screw of the upper end of described lower end vertical component (43) match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320652569.7U CN203591321U (en) | 2013-10-22 | 2013-10-22 | Hollow lateral hole pedicle screw centrum reinforcement bone cement syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320652569.7U CN203591321U (en) | 2013-10-22 | 2013-10-22 | Hollow lateral hole pedicle screw centrum reinforcement bone cement syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203591321U true CN203591321U (en) | 2014-05-14 |
Family
ID=50672273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320652569.7U Expired - Lifetime CN203591321U (en) | 2013-10-22 | 2013-10-22 | Hollow lateral hole pedicle screw centrum reinforcement bone cement syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203591321U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109124752A (en) * | 2018-09-14 | 2019-01-04 | 创辉医疗器械江苏有限公司 | A kind of vertebral column minimally invasive Cement fixation device assembly |
-
2013
- 2013-10-22 CN CN201320652569.7U patent/CN203591321U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109124752A (en) * | 2018-09-14 | 2019-01-04 | 创辉医疗器械江苏有限公司 | A kind of vertebral column minimally invasive Cement fixation device assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140514 |
|
| CX01 | Expiry of patent term |