CN207545190U - A kind of degradable skull lock for improving skull healing ability - Google Patents
A kind of degradable skull lock for improving skull healing ability Download PDFInfo
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- CN207545190U CN207545190U CN201720318465.0U CN201720318465U CN207545190U CN 207545190 U CN207545190 U CN 207545190U CN 201720318465 U CN201720318465 U CN 201720318465U CN 207545190 U CN207545190 U CN 207545190U
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- skull
- locking plate
- degradable
- lock
- silk
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Abstract
In order to solve skull defeci quickly healing and infection problems, the utility model provides a kind of degradable skull lock for improving skull healing ability, skull lock locking plate uses the degradable composite material with " sandwich " structure, connecting filament is using pure magnesium or magnesium alloy or degradable high polymer material, upper and lower locking plate is locked by the way of connecting filament, function silk is devised, and it is made to fill up in skull gap between upper and lower locking plate.The utility model can solve existing implantation material bioactivity difference and infection problems, which can accelerate skull healing, reduce infection rate and biodegradable.
Description
Technical field
The utility model is related to neurosurgical treatment skull lock, specifically provide it is a kind of improve skull healing ability can
Degradation skull lock.
Background technology
Skull lock is for a kind of fixed medical instrument of Craniotomy bone flap.Craniotomy skull lock can reach rapidly
It fixes and requires to bone flap clinic, it is easy to operate, it screws quickly, clamps securely, save operating time.
Clinical skull lock is broadly divided into nonabsorable and is can absorb two kinds by material point at present.The cranium of nonabsorable
Bone lock is made of titanium alloy, due to its biological stability in vivo, needs long-term existence in human body, which shares
In prepuberal children.For adult, the long-term existence of skull lock will also result in a degree of discomfort.It can
The skull lock of absorption is mainly made of polylactic acid high molecular material, such as the skull lock production of Shanghai Li Ao Medical Devices Co., Ltd.s
Product are made of 82% Poly-L-lactic acid and 18% polyglycolic acid, can be absorbed by the body completely in 12-18 months after surgery.
Absorbable skull lock can reduce postoperative since bone uptake caused by skull lock inhibits, merging object shifts, merging object is accessible, temperature sensitive
Equally likely possibility occurs for reaction, and CT/MRI is imaged after not influencing operation, is contributed to the check at postoperative nidus position, is particularly advantageous to hand
Postoperative needs continue to receive the patient of radiotherapy.However, the skull lock made of polylactic acid, since the mechanical strength of polylactic acid is low,
It is unfavorable for the strong fixation of skull lock, makes its application limited.And polylactic acid degradation generates acidic environment, is unfavorable for bone flap and cranium
Symphysis, in some instances it may even be possible to bone flap can be caused downright bad.
In addition, during due to detaching bone flap with skull in operation, often result in and about 3mm is formd between bone flap and skull
Wide bone defect.Three-point mount design based on existing skull lock, it is difficult to facilitation is generated to the healing of the bone defect, and
It is unstable in fixation, it is possible to bone flap can be made to dissociate, and then bone flap be made to lack blood fortune and downright bad, thus also as mesh
The serious problems that preceding skull lock application faces.
Utility model content
To solve the problems such as current skull fixes slow skull healing during materials'use, infection, non-degradable, this practicality
It is novel to provide a kind of degradable skull lock for improving skull healing ability.
The technical solution of the utility model is as follows：
A kind of degradable skull lock for improving skull healing ability, it is characterised in that：The skull lock include upper collet 1,
Lower locking plate 2, for the connecting filament that connects upper collet 1 and lower locking plate 2 and among two locking plates, along skull defeci gap
The function silk 3 of extension；
The upper collet 1, lower locking plate 2 be " sandwich " structure, upper and lower two layers for it is degradable, contain calcium phosphorus composition and tool
There is the ceramic material layer of bioactivity, middle layer is pure magnesium or the magnesium alloy material bed of material；Upper collet 1 is radially even be provided with it is multiple
First through hole 11；Lower locking plate 2 is radially even to be provided with and 11 one-to-one second through-hole 21 of first through hole；
The function silk 3 is the protrusion at 2 diameter position of upper collet 1 or lower locking plate, which extends to arbitrarily long to both sides
Degree, for height (preferably 1~6mm) less than or equal to the thickness of skull, width is the 1/6~1/3 of lower 2 diameter of locking plate, and is less than
Equal to the gap width between cranial bone flap and skull.
It places, connecting filament one end is sequentially passed through multiple corresponding in use, upper collet 1,2 inner surface of lower locking plate are corresponded to
After 11 and second through-hole 21 of first through hole, upper collet 1, lower locking plate 2 are implanted into fixed position, and tense connecting filament by upper and lower locking plate
Locking.
As preferred technical solution, the two layers of thickness up and down of " sandwich " structure is 5-200 μm, intermediate layer thickness
For 0.8-1.5mm.
Further preferably, the upper collet 1 and lower locking plate 2 are circle, a diameter of 5-15mm, have dentation outer edge.
Further preferably, the aperture of 11 and second through-hole 21 of first through hole is 0.3~1.0mm, and described first is logical
The number in hole 11 is preferably 4.
Further preferably, lengthening function silk can be set, i.e., connected by being set in one end of lengthening function silk and function silk 3
Column, other end setting third through-hole, makes the of the 3 or other lengthening function silk of connecting pole insertions function silk of one article of lengthening function silk
Three through-holes, so as to which multiple function silks be linked together.It is preferably 0.3~1.0mm to connect column diameter, and less than third through-hole
Aperture.
Further preferably, the lengthening function silk can carry crossbeam 4, be set perpendicular to lengthening function silk, add for fixed
Long function silk, crossbeam 4 are made of pure magnesium, magnesium alloy or the material identical with locking plate, and thickness is preferably 0.2~1.0mm, width
Preferably 0.5~3.0mm.
Further preferably, the connecting filament is pure magnesium/magnesium alloy silk thread or biodegradable Polymer wire line；Function silk 3 is pure
Magnesium/magnesium alloy silk or the silk material made of material identical with locking plate.
" sandwich " structure can by magnesium alloy in-situ high temperature ceramic, electro-deposition, liquid deposition, plasma spraying,
The modes such as sol-gel, laser melting coating, discharge plasma sintering, hot isostatic pressing method obtain.
The crossbeam 4 can be continuous at the top of lengthening function silk or be arranged at intervals.Tungsten electrode noble gas protecting electric arc can be used
Weldering, metal inert gas arc welding, resistance spot welding, friction welding (FW), Laser Welding, electron beam weldering etc. techniques into be about to lengthen work(
Energy silk welds together with crossbeam 4.
The degradable skull lock provided by the utility model for improving skull healing ability, using by degradable magnesium or magnesium alloy
Upper collet and lower locking plate is made in " sandwich " structural material formed with active ceramic layer, since the material can be sent out with human body fluid
It is biochemical reaction and degrade, be absorbed by the body and be metabolized.Therefore, the implant devices (upper and lower locking plate) manufactured by the material need not
Second operation takes out, and is used especially suitable for child patient.Meanwhile magnesium have bioactivity, can induce cell differentiation, growth and
Blood vessel is grown into, and after being implanted into organism as device, bone tissue can be gradually filled into due to magnesium degradation and volume reduction
Space achievees the purpose that repair wound and Reconstruction of The Function, so as to solve to cause since bone flap is bad with bone tissue healing
Bone flap dissociate so that bone flap lack blood fortune and necrosis the problem of.Further, since the alkaline ring that magnesium and magnesium alloy are degraded and formed
Border can inhibit bacterial growth, thus prevent postoperative infection.
To sum up, skull lock provided by the utility model has the following advantages：
(1) locking plate of the skull lock, which uses, has the descendent map/pure magnesium of " sandwich " structure or magnesium alloy/life
Object ceramic composite is made, and has the characteristics that fully absorb in vivo.And it is somebody's turn to do the composite degradation of " sandwich " structure
When can slow release have promote knitting effect magnesium ion and calcium ion, can both avoid pure magnesium or magnesium alloy it is too fast degrade lead
The bone resorption of cause and gas Accumulation Phenomenon, and the healing between bone flap and skull can be effectively facilitated, while also there is excellent power
Performance is learned, strong fixed function can be played.
(2) the utility model skull lock has the function of the silk made of magnesium or Mg alloy wire, is filled in cranial bone flap and cranium
Gap between bone, using the osteoinductive energy of magnesium, inducting osseous tissue and blood vessel are grown into, so as to promote bone flap and cranium symphysis.
Description of the drawings
Fig. 1 is degradable skull lock structure diagram (vertical view).
Fig. 2 is degradable skull lock structure diagram (facing).
Fig. 3 is lengthening function silk appearance diagram, faces, overlooks.
Fig. 4 is lengthening function silk sectional view.
Reference numeral：1st, upper collet, 2, lower locking plate, 3, function silk, 4, crossbeam, 11, first through hole, the 21, second through-hole,
31st, third through-hole.
Specific embodiment
The utility model is further expalined in explanation with specific embodiment below, but is not limited to this
The protection domain of utility model.
Embodiment 1
Such as the structure diagram that Fig. 1-4 is the degradable skull lock of the utility model, which includes：Upper collet 1, lower lock
Piece 2, for the connecting filament (not shown) that connects upper collet 1 and lower locking plate 2 and among two locking plates, along skull
The function silk 3 of defect gap extension.
The upper collet 1, lower locking plate 2 are " sandwich " structure, and multiple first are uniformly arranged in the radial direction in 1 upper edge of upper collet
Through-hole 11,11 numbers of first through hole shown in figure are 4, and specific number can carry out certainly according to the diameter of upper collet 1
By setting.It is uniformly arranged in the radial direction with and 11 one-to-one second through-hole 21 of first through hole in lower 2 upper edge of locking plate.It can lock
The outer edge of piece 1 and lower locking plate 2 is respectively provided with tusk.
The function silk 3 is the protrusion at lower 2 diameter position of locking plate, which extends to random length, height to both sides
For 1~6mm, width is the 1/6~1/3 of lower 2 diameter of locking plate, and less than or equal to the gap width between cranial bone flap and skull.
Wherein, the middle layer of upper and lower locking plate material is derived from rolling state magnesium strontium alloy (purity 99.9%) plank.Using punching
Pressure mode is made into Φ 12mm × 1.5mm locking plates with toothed edge, lower locking plate intermediate projections height 2mm, width 2mm, upper,
Lower locking plate drills out 4 first through hole and 4 the second through-holes of a diameter of Φ 0.7mm.Two ceramic layers are heavy using electricity up and down for locking plate
Product mode obtains, about 50 μm of the ceramic layer thickness of acquisition.Connecting filament uses magnesium strontium alloy (purity 99.9%) silk material, diameter
0.6mm connects upper and lower locking plate, and connecting filament and function silk table face prepare calcium phosphor coating using electro-deposition method.
Skull lock in the present embodiment is used to fix to the cranial bone flap of White Rabbit, using macromolecule cranium clinically
Bone lock is compareed.Two kinds of skull locks have bone flap good fixed function.After 3 months, the utility model skull lock is found
Fixed bone flap has apparent newborn bon e formation in bone road, and function silk has filled up skull gap.As function silk is degraded, cranium
Sutura gap is filled by freshman bone tissue.After 6 months, bone flap gap is healed substantially, and skull lock locking plate begins with signs of degradation.And
Macromolecule skull lock fixed 3 months and at 6 month, and bone flap gap is compared with the fixed bone flap healing area of the utility model skull lock
It is small.
Embodiment 2
With embodiment 1 the difference lies in：The middle layer of upper and lower locking plate material is derived from rolling state Mg-Zn-Nd alloys
(purity 99.9%) plank.Φ 10mm × 1.2mm locking plates with toothed edge, intermediate projections are prepared into using impact style
Height 1.5mm, width 1.5mm, and 4 first through hole and 4 the second through-holes of a diameter of Φ 0.8mm are drilled out, two above and below locking plate
A ceramic layer is obtained using plasma spraying mode, and the thickness of the ceramic layer of acquisition is 100 μm.Surface ceramii layer is more coarse,
Conducive to the adherency of implant inner posterior quadrant and the growth of tissue.Connecting filament uses Mg-Zn-Nd (purity 99.9%) silk material, directly
Diameter 0.7mm connects upper and lower locking plate, and connecting filament and function silk table face prepare calcium phosphor coating using electro-deposition method.
Skull lock in the present embodiment is used to fix to the cranial bone flap of White Rabbit, using Ti alloy skull clinically
Bone lock is compareed.Two kinds of skull locks have bone flap good fixed function.After 3 months, the utility model skull lock is found
Fixed bone flap opposite titanium alloy skull lock in bone road has more newborn bon e formations.After 6 months, bone flap gap has been healed,
Skull lock locking plate is gradually degraded, and function silk has been degraded.
Embodiment 3
With embodiment 1 the difference lies in：The middle layer of upper and lower locking plate material is derived from rolling state Mg-Zn-Nd alloys
(purity 99.9%) plank.Φ 14mm × 1.4mm locking plates with toothed edge, intermediate projections are prepared into using impact style
Height 3mm, width 3mm, and 4 first through hole and 4 the second through-holes of a diameter of Φ 0.7mm are drilled out, locking plate is made pottery for two up and down
Enamel coating is obtained using discharge plasma sintering method, and the ceramic layer thickness of acquisition is about 150 μm.Connecting filament uses Mg-Zn-Nd
(purity 99.9%) silk material, diameter 0.6mm connect upper and lower locking plate, and connecting filament and function silk table face use electro-deposition method
Prepare calcium phosphor coating.
Skull lock in the present embodiment is used to fix to the cranial bone flap of White Rabbit, using Ti alloy skull clinically
Bone lock is compareed.Two kinds of skull locks had bone flap good fixed function after 3 months, found the utility model skull lock institute
Fixed bone flap opposite titanium alloy skull lock in bone road has more newborn bon e formations.After 6 months, bone flap gap has been healed, cranium
Bone lock locking plate is gradually degraded, and function silk has been degraded.
Embodiment 4
With embodiment 1 the difference lies in：The middle layer of upper and lower locking plate material is derived from rolling state Mg-Zn-Nd alloys
(purity 99.9%) plank.Φ 15mm × 1.5mm locking plates with toothed edge, intermediate projections are prepared into using impact style
Height 4mm, width 3mm, and drill out 4 first through hole and 4 the second through-holes of a diameter of Φ 0.9mm, upper and lower two ceramic layers
It is obtained using hot isostatic pressing method, the ceramic layer thickness of acquisition is about 200 μm.Connecting filament uses Mg-Zn-Nd (purity 99.9%)
Silk material, diameter 0.8mm connect upper and lower locking plate.Lengthening function silk is set, and one end setting of lengthening function silk and function silk 3 connects
Column is connect, other end setting third through-hole makes the 3 or other lengthening function silk of connecting pole insertions function silk of a lengthening function silk
Third through-hole, so as to which multiple function silks be linked together.Connect column diameter 0.5mm, third through-hole diameter 0.6mm.Connecting filament,
Function silk and lengthening function silk table face prepare calcium phosphor coating using electro-deposition method.
Skull lock in the present embodiment is used to fix to the cranial bone flap of White Rabbit, using degradable height clinically
Molecule bone lock is compareed.Two kinds of skull locks have bone flap good fixed function.After 3 months, the utility model cranium is found
Bone lock, which fixes bone flap opposite macromolecule skull lock in bone road, more newborn bon e formations.After 6 months, bone flap gap has been cured
It closes, skull lock locking plate is gradually degraded, and function silk has been degraded.
Above-described embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement according to this, can not the scope of protection of the utility model be limited with this.
It is all according to the spirit of the present invention substantially equivalent change or modification for being made, should all cover the scope of protection of the utility model it
It is interior.
Claims (8)
1. a kind of degradable skull lock for improving skull healing ability, it is characterised in that：The skull lock include upper collet (1),
Lower locking plate (2), the connecting filament for connecting upper collet (1) and lower locking plate (2), the function silk (3) that extends along skull defeci gap；
The upper collet (1), lower locking plate (2) be " sandwich " structure, upper and lower two layers for it is degradable, contain calcium phosphorus composition and tool
There is the ceramic material layer of bioactivity, middle layer is pure magnesium or the magnesium alloy material bed of material；Upper collet (1) has been disposed radially multiple
One through-hole (11), lower locking plate (2) have been disposed radially and one-to-one second through-hole (21) of first through hole (11)；
The function silk (3) extends to arbitrarily for upper collet (1) or the protrusion at lower locking plate (2) diameter position, the protrusion to both sides
Length, height are less than or equal to the thickness of skull, and width is the 1/6~1/3 of lower locking plate (2) diameter, and less than or equal to skull bone
Gap width between valve and skull.
2. according to the degradable skull lock that skull healing ability is improved described in claim 1, it is characterised in that：" sandwich "
The two layers of thickness up and down of structure is 5-200 μm, intermediate layer thickness 0.8-1.5mm.
3. according to the degradable skull lock that skull healing ability is improved described in claim 1, it is characterised in that：Upper collet (1) and
Lower locking plate (2) is circle, a diameter of 5-15mm, has dentation outer edge.
4. according to any degradable skull lock for improving skull healing ability of claims 1 to 3, it is characterised in that：First
The number of through-hole (11) is 4.
5. according to any degradable skull lock for improving skull healing ability of claims 1 to 3, it is characterised in that：First
The aperture of through-hole (11) and the second through-hole (21) is 0.3~1mm.
6. according to any degradable skull lock for improving skull healing ability of claims 1 to 3, it is characterised in that：It is equipped with
Lengthening function silk, lengthening function silk one end setting connecting pole, a diameter of 0.3~1.0mm, other end setting third through-hole
(31), the diameter of connecting pole is less than the aperture of third through-hole (31).
7. according to any degradable skull lock for improving skull healing ability of claims 1 to 3, it is characterised in that：Connection
Silk is pure magnesium/magnesium alloy silk thread or biodegradable Polymer wire line.
8. according to any degradable skull lock for improving skull healing ability of claims 1 to 3, it is characterised in that：Function
Silk (3) is pure magnesium/magnesium alloy silk or the silk material made of material identical with locking plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720318465.0U CN207545190U (en) | 2017-03-29 | 2017-03-29 | A kind of degradable skull lock for improving skull healing ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720318465.0U CN207545190U (en) | 2017-03-29 | 2017-03-29 | A kind of degradable skull lock for improving skull healing ability |
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| Publication Number | Publication Date |
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| CN207545190U true CN207545190U (en) | 2018-06-29 |
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| CN201720318465.0U Active CN207545190U (en) | 2017-03-29 | 2017-03-29 | A kind of degradable skull lock for improving skull healing ability |
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2017
- 2017-03-29 CN CN201720318465.0U patent/CN207545190U/en active Active
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