CN101069756B - Two-layer warp-knitted tissue textile-type artificial blood vessel - Google Patents
Two-layer warp-knitted tissue textile-type artificial blood vessel Download PDFInfo
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- CN101069756B CN101069756B CN2007100412660A CN200710041266A CN101069756B CN 101069756 B CN101069756 B CN 101069756B CN 2007100412660 A CN2007100412660 A CN 2007100412660A CN 200710041266 A CN200710041266 A CN 200710041266A CN 101069756 B CN101069756 B CN 101069756B
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- blood vessel
- layer warp
- artificial blood
- warp
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Abstract
The present invention relates to a textile type artificial blood vessel with double-layer warp-knitted stitch structure. It is characterized by that it includes outer layer warp-knitted structure whose water permeability is 1000-3000 ml/sq.cm.min.16kPa and inner layer warp-knitted structure whose water permeability is 250-300ml/sq.cm.min.16kPa, the outer layer warp-knitted structure of said bloodvessel is cord stitch, and the inner layer warp-knitted structure of said blood vessel is tricot stitch. Said invention adopts a two-bar warp-knitted fabric to make the above-mentioned outer layer warp-knitted structure and inner layer warp-knitted structure be combined together so as to obtain the invented artificial blood vessel.
Description
Technical field
The present invention relates to a kind of artificial blood vessel, relate in particular to the Weave type artificial blood vessel that a kind of tube wall is a two-layer warp-knitted tissue.
Background technology
The 1950's,, begun the manufacturing history of Weave type artificial blood vessel since observing cell after the phenomenon of growing on the silk thread of immersion blood.Since then, select suitable fibrous material and ideal fabric construction to become the emphasis of artificial blood vessel research.Today after more than 50 year, Weave type artificial blood vessel has been widely used in clinical, replaces in the human body blood vessel of corrupted, obtains the good medical treatment effect clinically.Yet, though it is clinical that Weave type artificial blood vessel has been widely used in, but promote cell tissue to grow into and the function of tube wall oozing of blood when avoiding performing the operation owing to will take into account simultaneously, seeking desirable textile structural still is the problem of replacement type blood vessel research and development in recent years with the Weave type artificial blood vessel that obtains suitable tube wall hole.
Ideal artificial blood vessel tube wall should have the hole of suitable dimension, both has been beneficial to growing into of cell tissue, can not cause a large amount of oozings of blood in the operation process again because of the existence of hole.Woven or the knitting manufacture method of the general employing of existing Weave type artificial blood vessel, vascular wall is single layer structure.For fear of the tube wall oozing of blood, traditional method is the tightness degree that increases the tube wall textile structural, and human cell tissue grew into after this method was unfavorable for performing the operation.Existing method has two kinds: (1) both can avoid the oozing of blood of operation process tube wall by the method for pre-blood coagulation, and the postoperative autologous tissue of might as well being in the way again grows into, but the process of pre-blood coagulation will spend valuable operating time; (2) method of employing collagen protein or fimbrin, as Chinese patent (publication number CN 1919355A, in February, 2007 and CN 1919356A, in February, 2007) described, hole with coating material sealing artificial blood vessel tube wall, oozing of blood in avoiding performing the operation, and do not influence growing into of operation back cell tissue.But the collagen coating material choose condition restriction such as will being subjected to degradation property, human compatibility, product stock cycle.
Adopting the method that changes vascular wall woven structure structure is a kind of method of controlling pore-size, as Chinese patent (publication number CN 1565394A, in January, 2005) described by adopting the textile structural of strengthening satin weave to make the method for artificial blood vessel, this is a kind of tube wall of single layer structure, the purpose of tube wall oozing of blood when reaching the control operation by interweave frequency and the compactness that improves textile structural, this method may influence growing into smoothly of cell tissue.
Summary of the invention
Technical problem to be solved by this invention provides a kind of Weave type artificial blood vessel of two-layer warp-knitted tissue, to solve tube wall oozing of blood and do not influence the defective of growing into smoothly and can't realize simultaneously of cell tissue when preventing to perform the operation of the prior art.
Technical scheme
The invention provides a kind of Weave type artificial blood vessel of two-layer warp-knitted tissue, comprise outer warp knit structure (1) and the internal layer warp knit structure (2) made by polyester filaments, the water percolating capacity of described outer warp knit structure is 1000～3000ml/cm
2Min16kPa, the water percolating capacity of described internal layer warp knit structure are 150～300ml/cm
2Min.16kPa, blood vessel external warp knit structure are through the floss tissue, and the blood vessel inner layer warp knit structure is a warp plain stitch, adopt the cotton tissue of two comb wire covers that the ectonexine structure is coupled together, and constitute the structural pipe wall of an integral body.
It is that it is warp plain stitch (4) that internal layer warp knit structure (1) is selected the polyester filaments of 55dtex/24f for use through floss tissue (3) that described outer warp knit structure (1) is selected 110 dtex/96f polyester filaments for use.
Its vertical density of described Weave type artificial blood vessel is 15/cm, and lateral density is 10/cm.
The structural pipe wall of double-deck warp knit structure artificial blood vessel as shown in Figure 1.
Beneficial effect
The feature of the Weave type artificial blood vessel of two-layer warp-knitted tissue is that the outer field fibre diameter of composition tube wall is thick, the tube wall hole is bigger, and structure is sparse; The fibre diameter of tube wall internal layer is tiny, the tube wall hole is less, and structure is tight.The layer structure that hole is bigger helps growing into of cell tissue, and the less endothecium structure of hole has been avoided the excessive oozing of blood in the operation.Simultaneously, the blood vessel inner layer of being made up of fiber fines helps cell tissue along the superficial growth of person's internal layer.In addition, solid outer layer fiber material can make artificial blood vessel have enough mechanical performances, satisfy subsequently curling processing and operation technique in to the requirement of blood vessel mechanical performance.
Description of drawings
The double-deck warp knit structure artificial blood vessel of Fig. 1.
Fig. 2 loop construction sketch map.
Comb is through waste pad yarn motion diagram before Fig. 3
Comb is through plain cushion yarn motion diagram behind Fig. 4
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Outer warp knit structure is through the floss tissue, sees Fig. 2 a, uses the polyester filaments of 55dtex/24f; The internal layer warp knit structure is a warp plain stitch, sees Fig. 2 b, uses 110 dtex/96f polyester filaments.
Weaving tubing on double rib warp loom, its vertical density is 15/cm, lateral density is 10/cm.Preceding comb is through the floss tissue, and pad yarn rule is seen Fig. 3; Back comb warp plain stitch, pad yarn rule is seen Fig. 4.
The two-layer warp-knitted tissue Weave type artificial blood vessel of manufacturing, layer structure is sparse, and water percolating capacity is 1100ml/cm
2Min16kPa; Endothecium structure is tight, and water percolating capacity is 280ml/cm
2Min16kPa.
Outer warp knit structure is through the floss tissue, sees Fig. 2 a, uses the polyester filaments of 55dtex/24f; The internal layer warp knit structure is a warp plain stitch, sees Fig. 2 b, uses the 110dtex/96f polyester filaments.
Weaving tubing on double rib warp loom, its vertical density is 15/cm, lateral density is 10/cm.Preceding comb is through the floss tissue, and pad yarn rule is seen Fig. 3; Back comb warp plain stitch, pad yarn rule is seen Fig. 4.
The two-layer warp-knitted tissue Weave type artificial blood vessel of manufacturing, layer structure is sparse, and water percolating capacity is 1200ml/cm
2Min16kPa; Endothecium structure is tight, and water percolating capacity is 290ml/cm
2Min16kPa.
Outer warp knit structure is through the floss tissue, sees Fig. 2 a, uses the polyester filaments of 55dtex/24f; The internal layer warp knit structure is a warp plain stitch, sees Fig. 2 b, uses the 110dtex/96f polyester filaments.
Weaving tubing on double rib warp loom, its vertical density is 15/cm, lateral density is 10/cm.Preceding comb is through the floss tissue, and pad yarn rule is seen Fig. 3; Back comb warp plain stitch, pad yarn rule is seen Fig. 4.
The two-layer warp-knitted tissue Weave type artificial blood vessel of manufacturing, layer structure is sparse, and water percolating capacity is 1300ml/cm
2Min16kPa; Endothecium structure is tight, and water percolating capacity is 200ml/cm
2Min16kPa.
Claims (2)
1. the Weave type artificial blood vessel of a two-layer warp-knitted tissue comprises outer warp knit structure (1) and the internal layer warp knit structure (2) made by polyester filaments, and it is characterized in that: the water percolating capacity of described outer warp knit structure is 1000～3000ml/cm
2Min16kPa, the water percolating capacity of described internal layer warp knit structure are 150～300ml/cm
2Min16kPa, blood vessel external warp knit structure are through floss tissue (3), select the 110dtex/96f polyester filaments for use; The blood vessel inner layer warp knit structure is warp plain stitch (4), selects the polyester filaments of 55dtex/24f for use, adopts the cotton tissue of two comb wire covers that the ectonexine structure is coupled together, and constitutes the structural pipe wall of an integral body.
2. the Weave type artificial blood vessel of a kind of two-layer warp-knitted tissue according to claim 1, it is characterized in that: its vertical density of described Weave type artificial blood vessel is 15/cm, and lateral density is 10/cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100412660A CN101069756B (en) | 2007-05-25 | 2007-05-25 | Two-layer warp-knitted tissue textile-type artificial blood vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100412660A CN101069756B (en) | 2007-05-25 | 2007-05-25 | Two-layer warp-knitted tissue textile-type artificial blood vessel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101069756A CN101069756A (en) | 2007-11-14 |
| CN101069756B true CN101069756B (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100412660A Expired - Fee Related CN101069756B (en) | 2007-05-25 | 2007-05-25 | Two-layer warp-knitted tissue textile-type artificial blood vessel |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212918B (en) * | 2011-05-30 | 2013-06-26 | 东华大学 | Three-layer weaved small-caliber artificial blood vessel and preparation method thereof |
| CN103696119B (en) * | 2013-12-27 | 2015-12-30 | 常州市润源经编机械有限公司 | The artificial blood vessel braiding flower comb system of warp knitting machine |
| CN105266924B (en) * | 2014-07-17 | 2018-02-06 | 上海新华瑞思医疗科技有限公司 | A kind of light-duty hernia patch of macropore and its weaving method |
| CN105031735B (en) * | 2015-06-24 | 2018-01-19 | 东华大学 | A kind of three-layer composite structure small-caliber artificial blood vessel and preparation method thereof |
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2007
- 2007-05-25 CN CN2007100412660A patent/CN101069756B/en not_active Expired - Fee Related
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| CN101069756A (en) | 2007-11-14 |
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Granted publication date: 20101117 Termination date: 20130525 |