CN109453429A - One kind prevents adhesion anti-infectious hernia photo fix and preparation method thereof - Google Patents
One kind prevents adhesion anti-infectious hernia photo fix and preparation method thereof Download PDFInfo
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- CN109453429A CN109453429A CN201811527525.5A CN201811527525A CN109453429A CN 109453429 A CN109453429 A CN 109453429A CN 201811527525 A CN201811527525 A CN 201811527525A CN 109453429 A CN109453429 A CN 109453429A
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- 206010019909 Hernia Diseases 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 230000002924 anti-infective effect Effects 0.000 title claims abstract description 18
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- 239000004132 Calcium polyphosphate Substances 0.000 claims abstract description 23
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- 239000002994 raw material Substances 0.000 claims abstract description 11
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- 238000003756 stirring Methods 0.000 claims description 15
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
- A61L27/16—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
- A61L27/18—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
- A61L27/20—Polysaccharides
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/58—Materials at least partially resorbable by the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2420/00—Materials or methods for coatings medical devices
- A61L2420/06—Coatings containing a mixture of two or more compounds
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- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
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Abstract
The invention belongs to biomedical materials fields, and in particular to one kind prevents adhesion anti-infectious hernia patch and preparation method thereof.The hernia photo fix is mainly made of polypropylene substrate and composite membrane, and the composite membrane is mainly made of following raw material and its parts by weight: 30~60 parts of degradable high polymer material, 20~50 parts of chitosan and 2~10 parts of calcium polyphosphate fiber.Hernia patch of the invention avoids polypropylene substrate and directly contacts with tissue and lead to the problem of serious adhesion, and the compound film raw material can slowly degrade in vivo, good biocompatibility, have significant anti-infectious function, it can also stimulate to form mature and stable collagenous tissue, reduce recurrence rate.
Description
Technical field
The invention belongs to biomedical materials fields, and in particular to one kind prevents adhesion anti-infectious hernia photo fix and its preparation side
Method.
Background technique
Hernia is that some internal organs or tissue leave its normal anatomy position in human body, the weakness formed by the congenital or day after tomorrow
Point, defect or hole enter another position, and the various ages may occur, and there are easy to recur, repairings for traditional method for repairing and mending
The disadvantages of time is long, postoperative pain, replaced the tension-free hernioplasty for being gradually used sticking patch mode.Tension-free hernioplasty
Method are as follows: first hernia occur position upper opening, the internal organs squeezed into the position are pushed back in abdominal cavity, then will be by biology
Compatibility material is placed in the opening and is secured in position it by suture or other modes, is then shut off the opening, subtracts
The deformation that opening tissue around is born less, makes opening gradually heal.As it can be seen that biocompatible materials employed in herniorrhaphy
It is most important.
In the prior art, in tension-free hernioplasty be commonly used biocompatible materials include PP type sticking patch,
Polyesters sticking patch, Expanded Polytetrafluoroethylene etc..Wherein, PP type sticking patch mesh is big, be conducive to surrounding tissue grow into and
The immersion of macrophage is not easy in twine to hide bacterium, has preferable resistance infection and maintenance performance, and application is relatively broad,
But polypropylene material quality is harder, can lead to more serious intestinal adhesion and influences gut function, even results in intestinal obstruction and intestinal fistula,
It cannot directly be contacted with intestinal tube when use;Polyesters sticking patch flexibility is good, but tension stress ability is lower;Expanded PTFE is mended
Piece is microporosity biomaterial, is not easy to be formed adhesion with abdominal viscera when contacting, but its micropore face be not easy to fibroblast and
Macrophage enters, so anti-infection ability is lower.
Chinese patent application CN102058442A discloses a kind of hernia patch and preparation method thereof of compound anti-adhesion, institute
State that hernia patch includes propene polymer patch and expanded polytetrafluoroethylsealing prevents adhesion sticking patch, the expanded polytetrafluoroethylsealing prevents adhesion benefit
Piece is compounded on propene polymer patch.The hernia patch has taken into account the advantages of polypropylene and expanded polytetrafluoroethylsealing material, can prevent
Intestinal adhesion, stationarity are good, tension stress is strong, but the anti-infection ability of expanded polytetrafluoroethylsealing is still without improvement.
Chinese patent application CN107837420A discloses a kind of preparation method for caning absorb anti-infective hernia patch, described
Hernia patch includes polypropylene substrate, polypropylene substrate peripheral hardware is equipped with by degradable high polymer material, chitosan solution is compound and
At composite membrane, the hernia patch of the preparation can prevent internal organ and patch adhesion, reduce complication rate, but wherein
Degradable high polymer material be polylactic acid, hydrophily is poor, weak to the adhesiveness of cell, while its catabolite in vivo
For lactic acid, although water can be degraded by tricarboxylic acid cycle in vivo and carbon dioxide excretes, its product slant acidity,
Be unfavorable for cell growth be also possible to aggregation cause internal inflammatory reaction, be easy recurrence.
Therefore, there is an urgent need to develop a kind of promotion tissue cell growth, it is anti-infective, prevent adhesion, the repairing of hernia that recurrence rate is low
Piece and preparation method thereof.
Summary of the invention
The present invention is intended to provide a kind of promotion tissue cell growth, it is anti-infective, prevent adhesion, the hernia patch that recurrence rate is low and
Preparation method.
In order to achieve the above object, the invention adopts the following technical scheme:
One kind prevents adhesion anti-infectious hernia photo fix, and the hernia photo fix is mainly made of polypropylene substrate and composite membrane, described
Composite membrane is mainly made of following raw material and its parts by weight: 30~60 parts of degradable high polymer material, 20~50 parts of chitosan
With 2~10 parts of calcium polyphosphate fiber.
Further, the composite membrane is mainly made of following raw material and its parts by weight: degradable high polymer material 50
~60 parts, 35~50 parts of chitosan and 5~10 parts of calcium polyphosphate fiber.
Further, the composite membrane is mainly made of following raw material and its parts by weight: degradable high polymer material
50 parts, 45 parts of chitosan and 5 parts of calcium polyphosphate fiber.
Further, the degradable high polymer material is selected from one of l-lactic acid or poly-dl-lactide or two
Kind.
Further, the relative molecular weight of the degradable high polymer material is 100,000~400,000.
Further, the preparation method of the hernia photo fix, comprising the following steps:
S1, take the degradable high polymer material of corresponding amount be dissolved in w/v be 1:(5~20) organic solvent in,
Stirring makes it completely dissolved under confined conditions, and ultrasonic deaeration obtains mixed liquor A;
S2, take the chitosan of corresponding amount and calcium polyphosphate fiber be dissolved in w/v be 1:(5~20) organic acid
In solvent, stirring is made it completely dissolved under confined conditions, and ultrasonic deaeration obtains mixed liquid B;
S3, mixed liquor A obtained by step S1 is mixed with mixed liquid B obtained by step S2, stirs evenly, is poured into and is covered with poly- third
In the mold of alkenyl piece, evaporation solvent at film to get.
Further, the organic solvent in the step S1 is selected from acetone, ethyl acetate, chloroform and tetrahydrofuran
One of.
Further, the organic acid solvent in the step S2 be 0.35~0.7mol/L of concentration acetic acid or 0.4~
The citric acid of 0.6mol/L.
In addition, the present invention also provides the preparation methods of the hernia photo fix, comprising the following steps:
I, take the degradable high polymer material of corresponding amount be dissolved in w/v be 1:(5~20) organic solvent in,
The organic solvent is selected from one of acetone, ethyl acetate, chloroform and tetrahydrofuran, and stirring keeps its complete under confined conditions
Fully dissolved, ultrasonic deaeration, obtains mixed liquor A;
II, take the chitosan of corresponding amount and calcium polyphosphate fiber be dissolved in w/v be 1:(5~20) organic acid
In solvent, the organic acid solvent is the acetic acid of 0.35~0.7mol/L of concentration or the citric acid of 0.4~0.6mol/L, closed item
Stirring makes it completely dissolved under part, and ultrasonic deaeration obtains mixed liquid B;
III, mixed liquor A obtained by step I is mixed with mixed liquid B obtained by step II, stirs evenly, is poured into and is covered with poly- third
In the mold of alkenyl piece, evaporation solvent at film to get.
In addition, the present invention also provides the hernia photo fix or the power preparation method preparation treatment direct inguinal hernia,
Indirect hernia, femoral hernia, umbilical hernia, hernia of white line or incisional hernia bio-medical material in application.
Composite membrane in the present invention is prepared as a raw material with polylactic acid, chitosan and calcium polyphosphate fiber, is had good
Biocompatibility, can slowly degrade in vivo.Applicant's pleasantly surprised discovery in practice, hernia patch prepared by the present invention
It can promote tissue cell growth, significantly reduce recurrence rate.It is lacked in rat stomach wall for 1 group of the embodiment of the present invention it can be seen from test 1
The the 6th, 8 week I/III Collagen Type VI ratio after damage prosthesis is maintained at 4:1 or so, and stimulation forms mature and stable collagenous fibres
Tissue reduces recurrence rate.It may be a certain amount of chitosan and calcium polyphosphate fiber because of addition, on the one hand, hydrophily
The presence of chitosan and calcium polyphosphate fiber can improve the hydrophobic surface of polylactic acid, and the hydrophobic surface of polylactic acid
Too fast infiltration of the moisture to chitosan and calcium polyphosphate fiber can be slowed down, slow down the degradation speed of the two;On the other hand, shell is poly-
The catabolite of sugar and calcium polyphosphate fiber can reduce the influence that acid product grows cell, reduce the generation of inflammatory reaction,
Collective effect promotes tissue cell growth, forms mature and stable collagenous tissue, reduces postoperative recurrence.
In addition, polylactic acid is easy to produce hydrolysis, Shen when mixing with chitosan due to the presence of water in organic acid solvent
Ask someone to be found surprisingly that in practice, chitosan is first crosslinked with calcium polyphosphate fiber, and the two can lock moisture, then with polylactic acid
Mixing, can significantly reduce the degradation situation of polylactic acid.Three is arranged outside polypropylene substrate with centainly matching manufactured composite membrane,
Contacted with body tissue organ can be used as cell growth depend on but not generate adhesion, avoid polypropylene substrate and tissue directly
Contact leads to the problem of serious adhesion.Hernia patch of the present invention can extraordinary reparation rat abdomen it can be seen from test example 1
Wall defect, postoperative hernia patch surrounding tissue soft-touch, without adhesion phenomenon, tissue growth is all right, a large amount of fibers
Tissue encapsulation sticking patch, thickness is thicker, does not have the case where infecting.
The invention has the following advantages that
(1) one kind of the present invention prevents adhesion anti-infectious hernia patch, has set one layer of composite membrane in polypropylene substrate peripheral hardware, has kept away
Exempt from polypropylene substrate directly to contact with tissue and lead to the problem of serious adhesion, and the compound film raw material can be slow in vivo
Degradation, good biocompatibility have significant anti-infectious function.
(2) a kind of composite membrane for the anti-infectious hernia patch that prevents adhesion of the present invention is with polylactic acid, chitosan and calcium polyphosphate
Fiber is prepared as a raw material, and can be stimulated and be formed mature and stable collagenous tissue, and recurrence rate is reduced.
Detailed description of the invention
Fig. 1 is I-type collagen expression after rat abdominal hernia model herniorrhaphy.
Fig. 2 is type III collagen expression after rat abdominal hernia model herniorrhaphy.
Fig. 3 is I/III collagen type expression contents ratio after rat abdominal hernia model herniorrhaphy.
Specific embodiment
The specific embodiment of form by the following examples makees further specifically above content of the invention
It is bright.But the range that this should not be interpreted as to the above-mentioned theme of the present invention is only limitted to following embodiment.
Wherein, agents useful for same of the present invention is common agents, can be purchased from conventional reagent production and sales company.
1 one kind of embodiment prevents adhesion anti-infectious hernia photo fix
Including the composite membrane that polypropylene substrate and polypropylene substrate peripheral hardware are set, the composite membrane is mainly by degradable macromolecule
50 parts of material, 45 parts of chitosan and 5 parts of calcium polyphosphate fiber are made, and the degradable high polymer material is relative molecular weight 250,000
L-lactic acid.
Preparation method:
I, the degradable high polymer material of corresponding amount is taken to be dissolved in the acetone that w/v is 1:5, under confined conditions
Stirring makes it completely dissolved, and ultrasonic deaeration obtains mixed liquor A;
II, to take the chitosan of corresponding amount and calcium polyphosphate fiber to be dissolved in the concentration that w/v is 1:5 be 0.5mol/
In the acetic acid of L, stirring is made it completely dissolved under confined conditions, and ultrasonic deaeration obtains mixed liquid B;
III, mixed liquor A obtained by step I is mixed with mixed liquid B obtained by step II, stirs evenly, is poured into and is covered with poly- third
In the mold of alkenyl piece, evaporation solvent at film to get.
2 one kind of embodiment prevents adhesion anti-infectious hernia photo fix
Including the composite membrane that polypropylene substrate and polypropylene substrate peripheral hardware are set, the composite membrane is mainly by degradable macromolecule
60 parts of material, 35 parts of chitosan and 5 parts of calcium polyphosphate fiber are made, and the degradable high polymer material is relative molecular weight 350,000
Poly-dl-lactide.
Preparation method reference implementation example 1, wherein the lemon that the organic acid solvent in the step S2 is concentration 0.5mol/L
Acid.
3 one kind of embodiment prevents adhesion anti-infectious hernia photo fix
Including the composite membrane that polypropylene substrate and polypropylene substrate peripheral hardware are set, the composite membrane is mainly by degradable macromolecule
40 parts of material, 50 parts of chitosan and 10 parts of calcium polyphosphate fiber are made, and the degradable high polymer material is relative molecular weight 35
Ten thousand poly-dl-lactide.
Preparation method reference implementation example 1, wherein the vinegar that the organic acid solvent in the step S2 is concentration 0.35mol/L
Acid.
A kind of hernia patch of comparative example 1
Difference from Example 1 is that chitosan is replaced with chitosan oligosaccharide by comparative example 1, remaining parameter and preparation method
Reference implementation example 1.
A kind of hernia patch of comparative example 2
Difference from Example 1 is that comparative example 2 removes calcium polyphosphate fiber, increases degradable high polymer material extremely
55 parts, remaining parameter and preparation method reference implementation example 1.
A kind of hernia patch of comparative example 3
Difference from Example 1 is that l-lactic acid is replaced with polycaprolactone by comparative example 3, remaining parameter and system
Preparation Method reference implementation example 1.
A kind of hernia patch of comparative example 4
Polypropylene and expanded polytetrafluoroethylsealing are prepared with reference to the specific embodiment of Chinese patent application CN102058442A
Compound hernia patch.
1 hernia patch of test example repairs the test of rat abdominal-wall defect
1. test material: hernia patch prepared by embodiment 1 and comparative example 1~4.
2. subjects: healthy adult male SD rat, 150~200g of weight, by Zhongshan University SPF grades of Animal Lab.
It provides.
3. test method:
Rat is divided into 5 groups using random digits table: example 1 group and 1~4 group of comparative example.It is pressed with 4% chloraldurate
0.1ml/10g dosage intraperitoneal injection of anesthesia takes abdomen median incision, cuts subcutaneous tissue, blunt separation subcutaneous tissue and deep layer
Fascia appears muscle layer, cuts off two sides abdominal wall muscle and peritonaeum, forms the rectangle defect of size about 2.5 × 2cm, stomach wall is made
Hernia model.Normal saline flushing abdominal cavity, after blotting net residual liquid, each group rat uses the phase of onesize (3cm × 2cm) respectively
Hernia patch is answered to carry out ventral hernia repair art, with 5-0 wire discontinuous sewing hernia patch in abdominal-wall defect muscle edge, 4-0
Line interrupted suture subcutaneous tissue and skin, Sterilized application cover notch, tail label, sub-cage rearing.
General activity, the meal situation of postoperative close observation rat, and whether there is or not infections of incisional wound and hernia patch set-down location skin
The formation such as lower hemotoncus, hernia, fistula.Put to death animal in batches respectively at postoperative 4,6,8 weeks, extraction operative region tissue is made pathology and cuts
Piece observes the postoperative hernia patch surrounding tissue growing state of each group, detects I type, type III collagen with detected by Western blot
Expression and its expression ratio.
4. test result:
During test, no SD rats death situation smoothly completes operation.Clinical follow, all test rats are general
Movable as usual, feed is good, and defecation situation is normal, does not occur situations such as hernia, fistula at notch and hernia patch placement region, week
Tissue growth situation is enclosed referring to table 1, and I type, type III collagen expression and its expression ratio are referring to Fig. 1~3.
1 hernia patch surrounding tissue growing state of table
Seen from table 1, the embodiment of the present invention 1 prepare hernia patch can extraordinary reparations rat abdominal-wall defect, perform the operation
Hernia patch surrounding tissue soft-touch afterwards, foreign body sensation is less, and without adhesion phenomenon, tissue growth is all right, a large amount of fibers
Tissue encapsulation sticking patch, thickness is thicker, and sticking patch grid is invisible, does not have the case where infecting, and 1~4 using effect of comparative example
It is poor.
In addition, collagen is the important extracellular matrix for maintaining connective tissue mechanical stability, is placed in sticking patch
In repair process, collagen is unbalance or generates the factors of abnormal collagenous fibres all will lead to the weakening of connective tissue, thinning,
Eventually lead to hernia recurrence.The collagen overwhelming majority as extracellular matrix main ingredient is by I and type III collagen structure
At, it is extremely rich in type III collagen in inmature granulation and scar, and type i collagen content is considerably less, as fibrosis continues,
Initially dominance type III collagen fades away, and replaced type i collagen, tissue intensity increases therewith.Studies have shown that I/III
Collagen Type VI ratio is lower, and easier recurrence after herniorrhaphy, I/III collagen ratio should be maintained at 4:1 or so, could maintain connective
The intensity of the stabilization and collagen tension of tissue or scar.
By Fig. 1~3 as it can be seen that the I-type collagen of example 1 group kept higher expression quantity at 4,6,8 weeks after operation,
With high tenacity, the collagenous fibres of formation are thicker, can be in the firm structure of early formation;And type III collagen expression compared with
It is few, it is maintained at 4:1 or so in the 6th, 8 week I/III Collagen Type VI ratio, can stimulate and form mature and stable collagenous tissue, is dropped
Low recurrence rate.And 1~4 group of comparative example of I-type collagen is lower in 4,6,8 weeks vindication amounts, expresses with type III collagen
Almost, I/III Collagen Type VI ratio is in (1~2): 1 or so, it be easy to cause recurrence.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
- The anti-infectious hernia photo fix 1. one kind prevents adhesion, which is characterized in that the hernia photo fix is mainly by polypropylene substrate and composite membrane It is made, the composite membrane is mainly made of following raw material and its parts by weight: 30~60 parts of degradable high polymer material, chitosan 20~50 parts and 2~10 parts of calcium polyphosphate fiber.
- 2. hernia photo fix according to claim 1, which is characterized in that the composite membrane is mainly by following raw material and its parts by weight It is made: 50~60 parts of degradable high polymer material, 35~50 parts of chitosan and 5~10 parts of calcium polyphosphate fiber.
- 3. hernia photo fix according to claim 2, which is characterized in that the composite membrane is mainly by following raw material and its parts by weight It is made: 50 parts of degradable high polymer material, 45 parts of chitosan and 5 parts of calcium polyphosphate fiber.
- 4. any hernia photo fix according to claim 1~3, which is characterized in that the degradable high polymer material is selected from left-handed One or both of polylactic acid or poly-dl-lactide.
- 5. hernia photo fix according to claim 4, which is characterized in that the relative molecular weight of the degradable high polymer material is 10 Ten thousand~400,000.
- 6. any hernia photo fix according to claim 1~3, which is characterized in that the preparation method of the hernia photo fix, including it is following Step:S1, take the degradable high polymer material of corresponding amount be dissolved in w/v be 1:(5~20) organic solvent in, it is closed Under the conditions of stir and make it completely dissolved, ultrasonic deaeration obtains mixed liquor A;S2, take the chitosan of corresponding amount and calcium polyphosphate fiber be dissolved in w/v be 1:(5~20) organic acid solvent In, stirring makes it completely dissolved under confined conditions, and ultrasonic deaeration obtains mixed liquid B;S3, mixed liquor A obtained by step S1 is mixed with mixed liquid B obtained by step S2, stirs evenly, is poured into and is covered with polypropylene-base In the mold of piece, evaporation solvent at film to get.
- 7. hernia photo fix according to claim 6, which is characterized in that the organic solvent in the step S1 is selected from acetone, acetic acid One of ethyl ester, chloroform and tetrahydrofuran.
- 8. hernia photo fix according to claim 6, which is characterized in that organic acid solvent in the step S2 be concentration 0.35~ The acetic acid of 0.7mol/L or the citric acid of 0.4~0.6mol/L.
- 9. the preparation method of any hernia photo fix according to claim 1~8, which comprises the following steps:I, take the degradable high polymer material of corresponding amount be dissolved in w/v be 1:(5~20) organic solvent in, it is described Organic solvent is selected from one of acetone, ethyl acetate, chloroform and tetrahydrofuran, and stirring keeps it completely molten under confined conditions Solution, ultrasonic deaeration obtain mixed liquor A;II, take the chitosan of corresponding amount and calcium polyphosphate fiber be dissolved in w/v be 1:(5~20) organic acid solvent In, the organic acid solvent be 0.35~0.7mol/L of concentration acetic acid or 0.4~0.6mol/L citric acid, under confined conditions Stirring makes it completely dissolved, and ultrasonic deaeration obtains mixed liquid B;III, mixed liquor A obtained by step I is mixed with mixed liquid B obtained by step II, stirs evenly, is poured into and is covered with polypropylene-base In the mold of piece, evaporation solvent at film to get.
- 10. preparation method described in any hernia photo fix or claim 9 treats groin in preparation according to claim 1~8 The directly application in the bio-medical material of the oblique hernia of Hernia, femoral hernia, umbilical hernia, hernia of white line or incisional hernia.
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CN111714707A (en) * | 2019-03-19 | 2020-09-29 | 陕西佰傲再生医学有限公司 | Anti-infection anti-adhesion composite hernia repair patch and preparation method thereof |
EA039154B1 (en) * | 2019-05-29 | 2021-12-10 | Сархан Абульфаз оглы Тагиев | Method for manufacturing mesh prosthesis for hernioplasty with prolonged antibacterial properties |
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