CN105266924A - Large-pore light hernia repair mesh and knitting method thereof - Google Patents
Large-pore light hernia repair mesh and knitting method thereof Download PDFInfo
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- CN105266924A CN105266924A CN201410341431.4A CN201410341431A CN105266924A CN 105266924 A CN105266924 A CN 105266924A CN 201410341431 A CN201410341431 A CN 201410341431A CN 105266924 A CN105266924 A CN 105266924A
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Abstract
The invention discloses a large-pore light hernia repair mesh. The structure of the hernia repair mesh is in a double-carded perforating queenscord atlas net structure knitted by medical synthetic monofilaments. The hernia repair mesh is mesh knitted fabric and has rhombus-shaped meshes in a surface thereof. The hernia repair mesh ranges from 2.6 to 7.5 mm in pore diameter and ranges from 18 to 55g/m2 in gram weight. Additionally, the invention further discloses a knitting method of the large-pore light hernia repair mesh.The large-pore light hernia repair mesh has following beneficial effects: the large-pore light hernia repair mesh is good in structural compliance, low in weight, large in pores and high in ability of anti-infection, which is desirable to ingrowth of fibroblasts and penetration of macrophage and leucocyte; chronic abdominal wall pains and foreign body sensation of a patient are relieved so that comfort level of the patient is greatly increased; the large-pore light hernia repair mesh can be tailored to be a flat sheet, a mesh plug by hot pressing or a specially-designed three-dimensional structure and serves as a part of a composite mesh; and the large-pore light hernia repair mesh has fine an application prospect.
Description
Technical field
The present invention relates to a kind of hernia patch, particularly relate to the light-duty hernia patch of a kind of macropore and weaving method thereof.
Background technology
Hernia is sick, and popular name hernia among the people is that tissue or the organ at some position of human body have left original position, enters into another position, and produce the dysfunction of some internal organs by some defect of human body, gap and weakness.Hernia disease is surgery frequently-occurring disease, especially common with abdominal hernia.Operative treatment is the most effective mode for the treatment of hernia disease, comprises traditional suture repair and uses the large art formula of the tension-free hernioplasty two of patching material.Current strain less repair is little with its wound, postoperative pain light, it is fast to recover, the advantage that learning curve is shorter, relapse rate is low that is operation technique, has become the main flow art formula for the treatment of adult hernia disease.
In tension-free hernioplasty, the object of application hernia patch is to provide enough mechanical strengths that can adapt to physiological need, reaches abdominal-wall defect place permanent closed.For a long time, the curative effect after herniorrhaphy is focused in relapse rate always, and ignore the discomfort of the otch after operation in patients, the compliance of stomach wall and the comfort level of patient.The sticking patch of heavy amount of the intensive braiding of tradition can cause that operation local is stiff, foreign body reaction and stomach wall limitation of movement.The large aperture sticking patch of light soft not only can reduce the incidence rate of post-operative complication, and inflammatory reaction and the connective tissue that can also reduce local are formed, thus reduces stomach wall chronic pain, sticking patch foreign body sensation and stomach wall constraint sense, greatly improves the comfort level of patient.Therefore, frivolous macropore is considered to the characteristic that desirable sticking patch should possess.Therefore, the various informative light-duty hernia patch of macropore of research and development is needed badly.
Summary of the invention
Technical problem to be solved by this invention is to provide the light-duty hernia patch of a kind of macropore, this sticking patch is change chaining warp sateen eyelet stitch structure, pliability and contouring quality good, quality is light, aperture is large, be beneficial to fibroblast grow into fast and macrophage, leukocytic infiltration, anti-infection ability is strong, and alleviate stomach wall chronic pain, the foreign body sensation of patient, substantially increase the comfort level of patient, plain film can be tailored into, be hot pressed into net plug or the stereochemical structure of particular design, and as the part of composite patch, have a good application prospect.In addition, the present invention also provides the weaving method of the light-duty hernia patch of this macropore.
For solving the problems of the technologies described above, the invention provides the light-duty hernia patch of a kind of macropore, the structure of described hernia patch is that two comb skies that medical synthetic filaments is woven into wear change chaining warp sateen eyelet stitch structure; Described hernia patch belongs to mesh fabric, and its surface mesh assumes diamond in shape; The aperture of described hernia patch is 2.6 ~ 7.5mm, and grammes per square metre is 18 ~ 55g/m
2.
Described two comb sky is worn change chaining warp sateen eyelet stitch structure and is referred to that two sley bars are one and have worn, and does symmetrical change chaining atlas lap and to move the eyed structure formed; The above change chaining warp sateen to refer in a complete organization of three pin warp sateens on each pad yarn direction the tissue that equity between two adjacent switch-back circles adds chaining pad yarn and formed, and the line increasing the motion of chaining pad yarn can increase mesh.
As preferred technical scheme, two sley bars are one and have worn, when doing symmetrical change chaining atlas lap motion, in a complete organization of described change chaining warp sateen, the chaining pad yarn motion line number that same pad yarn direction adds between two adjacent switch-back circles is 1 ~ 6, and organizes the opening and closing degree of lip-rounding formula of coil can carry out change arbitrarily and configuration.
As preferred technical scheme, the lateral density of described hernia patch is: 15 ~ 40 stringer/5cm, and density is: 36 ~ 145 line/5cm.
Described medical synthetic filaments comprises polypropylene (PP), polyester (PET), politef (PTFE), polyvinylidene fluoride (PVDF), polylactic acid (PLA), poly (glycolide-lactide) (PGLA), Acetic acid, hydroxy-, bimol. cyclic ester-caprolactone copolymer (PGCL), polyhydroxyalkanoate (PHA) etc. all can be used as the medical grade synthetic filaments of et al. Ke.
As preferred technical scheme, the diameter range of described medical synthetic filaments is 0.08 ~ 0.2mm, and fracture strength is 2.8 ~ 7.5g/d, and elongation at break is 15% ~ 40%.
As preferred technical scheme, the porosity of described hernia patch is 88% ~ 98%, and thickness is 0.4 ~ 0.78mm.
As preferred technical scheme, described hernia patch is tailored into square, rectangle, circle, ellipse or erose flat sheets, or the net plug be hot pressed into according to concrete operation design or other stereochemical structures.
As preferred technical scheme, if described medical synthetic filaments polypropylene monofilament or monofilament polyester, light-duty composite patch can be compounded to form with adherence preventing material or absorbable material.
The basic physical index of the light-duty hernia patch of described macropore:
Thickness: 0.4 ~ 0.78mm, grammes per square metre: 18 ~ 55g/m
2.
Aperture: 2.6 ~ 7.5mm, porosity: 89% ~ 98%.
Lateral density: 15 ~ 40 stringer/5cm, density: 36 ~ 145 line/5cm.
The mechanical property of the light-duty hernia patch of described macropore:
Cross breaking strength: 90 ~ 300N; Transverse breakage percentage elongation: 50% ~ 130%;
Longitudinal fracture is powerful: 140 ~ 350N; Longitudinal fracture percentage elongation: 40% ~ 110%;
BURSTING STRENGTH: 30 ~ 280Kpa;
Horizontal suture strength: 20 ~ 60N; Longitudinal suture strength: 20 ~ 60N.
The production procedure of the light-duty hernia patch of macropore of the present invention is: raw material-warping-braiding-sizing-post processing.
In addition, the present invention also provides the weaving method of the light-duty hernia patch of this macropore, comprises the steps:
On tricot machine, two sley bars are installed, medical synthetic filaments gets off from unwinding warp beam, cam system is entered according to certain warp run-in, two sley bars are one and have worn, wear change chaining warp sateen eyelet stitch pad yarn according to two comb sky digital, front comb and rear comb sley point symmetrical pad yarn, form mesh fabric.
Setting process: thermal finalization is exactly the thermoplasticity utilizing synthetic fibers, is heated to temperature required, and heats a period of time at this temperature, then cool chemical & blended fabric rapidly under some tension, makes the size modes of fabric keep stable.Setting temperature: higher than the vitrification point of selected materials, lower than its crystalline melt temperatures; Shaping time: 3 ~ 15min.
Compared with prior art, beneficial effect of the present invention is:
(1) the present invention adopts two comb sky to wear change chaining warp sateen eyelet stitch structure, except meeting the mechanical strength (mechanical property of the light-duty hernia patch of described macropore: Cross breaking strength: 90 ~ 300N enough needed for physiology; Transverse breakage percentage elongation: 50% ~ 130%; Longitudinal fracture is powerful: 140 ~ 350N; Longitudinal fracture percentage elongation: 40% ~ 110%; BURSTING STRENGTH: 30 ~ 280Kpa; Horizontal suture strength: 20 ~ 60N; Longitudinal suture strength: 20 ~ 60N), tissue compliance is good, the characteristic that its macropore is soft is also beneficial to fibroblast and grows into and macrophage, leukocytic infiltration, anti-infection ability is strong, reduce the incidence rate of post-operative complication, alleviate stomach wall chronic pain, the foreign body sensation of patient, greatly improve the comfort level of patient.Macropore of the present invention light-duty polypropylene hernia patch compared with the light-duty hernia patch product of macropore on the market, improve the comfort level of patient, anti-infection ability and tissue to grow into etc. in all there is advantage.
(2) two comb sky of the present invention wears change chaining warp sateen eyelet stitch weaving method, and applicable raw materials kind is wide, this type of sticking patch woven by different material due to material property difference the disease that is suitable for different with art formula, be convenient to doctor's selection.
(3) the light-duty hernia patch fabric of macropore made of polypropylene of the present invention or polyester material, can be compounded to form light-duty composite patch with adherence preventing material or absorbable material.
(4) mesh fabric of the present invention adopts two comb sky to wear change chaining warp sateen eyelet stitch, square, rectangle, circle, ellipse or erose flat sheets can be tailored into, also can be hot pressed into the net plug according to concrete operation design or other stereochemical structures, have a good application prospect.
(5) preparation technology of the present invention is simple, is easy in dust proof workshop large-scale production.
Accompanying drawing explanation
Fig. 1 is the empty gauze pad motion diagram wearing six row change chaining warp sateen eyelet stitches of the two comb of the light-duty hernia patch of macropore of the present invention; Wherein, the gauze pad motion diagram wearing six row change chaining opening warp sateen eyelet stitches for the two comb of the light-duty hernia patch of macropore of the present invention is empty shown in Fig. 1 (a); Six row change chainings of wearing for the two comb of the light-duty hernia patch of macropore of the present invention is empty shown in Fig. 1 (b) are remained silent the gauze pad motion diagram of warp sateen eyelet stitch.
Fig. 2 is the empty gauze pad motion diagrams wearing eight row change chaining warp sateen eyelet stitches of two combs of the light-duty hernia patch of macropore of the present invention; Wherein, the empty gauze pad motion diagram wearing eight row change chaining opening warp sateen eyelet stitches of the two combs for the light-duty hernia patch of macropore of the present invention shown in Fig. 2 (a) He (b); Two combs that Fig. 2 (c) and (d) are the light-duty hernia patch of macropore of the present invention are empty to be worn eight row change chainings and to remain silent the gauze pad motion diagram of warp sateen eyelet stitch.Chaining pad yarn lopping in tissue shown in Fig. 2 (a) is open form, and the chaining pad yarn lopping in tissue shown in Fig. 2 (b) is full cut-off degree of lip-rounding formula; Pillar stitch's lopping form in tissue shown in Fig. 2 (c) is configured to from bottom to top remain silent after first opening.Pillar stitch's lopping form in tissue shown in Fig. 2 (d) is configured to from bottom to top first remain silent opening again.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further detailed explanation.
1, the present invention adopts two comb sky to wear change chaining warp sateen eyelet stitch, and namely two sley bars are one and have worn, and does symmetrical change chaining atlas lap and to move the eyed structure formed.Described change chaining warp sateen to refer in a complete organization of three pin warp sateens on each pad yarn direction the tissue that equity between two adjacent switch-back circles adds chaining pad yarn and formed, and the line number increasing the motion of chaining pad yarn can increase mesh.Fig. 1 and Fig. 2 is the illustrated coil that turns to is organize gauze pad motion diagram when remaining silent coil, also belongs to interest field of the present invention when being open stich when turning to coil.In addition, wear at this pair of comb sky and change chaining warp sateen eyelet stitch carries out inlaid thread braiding also belong to interest field of the present invention.
2, Figure 1 shows that two comb skies of the light-duty hernia patch of macropore of the present invention wear six row change chaining warp sateen eyelet stitch structures, namely two sley bars are one and have worn, and do symmetrical six row change chaining atlas laps and to move the eyed structure formed.Described six row change chaining warp sateens to refer in a complete organization of three pin warp sateens on each pad yarn direction the tissue that equity between two adjacent switch-back circles adds 1 chaining pad yarn line and formed.Figure 2 shows that two comb skies of the light-duty hernia patch of macropore of the present invention wear eight row change chaining warp sateen eyelet stitch structures, namely two sley bars are one and have worn, and do symmetrical eight row change chaining atlas laps and to move the eyed structure formed.Described eight row change chaining warp sateens to refer in a complete organization of three pin warp sateens on each pad yarn direction the tissue that equity between two adjacent switch-back circles adds 2 chaining pad yarn lines and formed.Mesh is increased by the line number increasing the motion of chaining pad yarn, belong to interest field of the present invention, namely two sley bars are one and have worn, when doing symmetrical change chaining atlas lap motion, in a complete organization of described change chaining warp sateen, the chaining pad yarn motion line number that on each pad yarn direction, between two adjacent switch-back circles, equity adds is 1 ~ 6.
3, shown in Fig. 1 (a) is that two comb sky wears six row change chaining opening warp sateen eyelet stitch structures.Its split shed to refer in change chaining satin on same pad yarn direction that two turn to the coil lopping between coil except chaining pad yarn to be opening form.Wearing six row change chainings for two comb sky and to remain silent warp sateen eyelet stitch structure shown in Fig. 1 (b).Wherein remain silent and to refer on same pad yarn direction that two turn to the coil lopping between coil except chaining pad yarn to be the form of remaining silent.
4, described in back and forward, shown in Fig. 2 (a) He (b) is that two comb sky wears eight row change chaining opening warp sateen eyelet stitch structures; Fig. 2 (c) and (d) wear eight row change chainings for two comb sky and to remain silent warp sateen eyelet stitch structure.The difference of organizational structure shown in Fig. 2 (a) and Fig. 2 (b), and with the difference of organizational structure Fig. 2 (d) Suo Shi, Fig. 2 (c) is all that the configuration of wherein chaining pad yarn lopping form is different, chaining pad yarn lopping in tissue shown in Fig. 2 (a) is open form, and the chaining pad yarn lopping in tissue shown in Fig. 2 (b) is full cut-off degree of lip-rounding formula; Pillar stitch's lopping form in tissue shown in Fig. 2 (c) is configured to from bottom to top remain silent after first opening.Pillar stitch's lopping form in tissue shown in Fig. 2 (d) is configured to from bottom to top first remain silent opening again.In described tissue, any change of the opening and closing mouth lopping form of chaining pad yarn coil all belongs to interest field of the present invention with configuration.
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
With reference to the accompanying drawings, embodiments of the present invention relate to the light-duty hernia patch of a kind of macropore and weaving method thereof.
The production procedure of the light-duty hernia patch of macropore: raw material-warping-braiding-sizing-post processing.
Embodiment 1
1. the selection of macropore light-duty nonabsorable hernia patch raw material
Medical PP, PET, PVDF and PTFE are the nonabsorable materials with good mechanics and biocompatibility, and wherein medical PP and PET hernia patch is generally used for outside abdominal cavity and places, and are the sticking patch kinds be most widely used at present.And PTFE and PVDF is originally as inert material, as compared to PP with PET sticking patch of the same type, intestinal tube and mesh sheet adhesion in body can be reduced.Nonabsorable mesh sheet also can be compounded to form with adherence preventing material or absorbable material can the intraperitoneal composite patch of placing.
The present embodiment selects polypropylene for medical article monofilament to be raw material, and its performance is as shown in table 1.
Table 1 Material selec-tion and performance
| Raw material type | Diameter (mm) | Fracture strength (g/d) | Elongation at break (%) |
| PP monofilament | 0.13 | 5.8 | 29 |
2. the warping process of macropore light-duty nonabsorable hernia patch medical synthetic filaments used
Warping refers to by monofilament according to the radical needed for weaving, length, is wound in warp beam, for tricot machine with certain even tension.Warping is divided into beam warping, section warping and section warping three major types.The present embodiment adopts section warping, is divided into the segmentation warp beam that several parts are wound into narrow width, then segmentation warp beam is assembled into the warp beam on tricot machine by required whole monofilament raw materials.
3. the weaving parameter of the light-duty nonabsorable hernia patch of macropore
This macropore light-duty nonabsorable hernia patch is undertaken woven by the warp knitting technology in textile technology, and the tissue pad yarn movement locus that this embodiment adopts is as shown in Fig. 2 (a), and concrete knitting technology is as shown in table 2.
Table 2 knitting technology parameter
4. the heat setting process parameter of the light-duty nonabsorable hernia patch of macropore
Thermal finalization is exactly the thermoplasticity utilizing synthetic fibers, is heated to temperature required, and heats a period of time at this temperature, then cool chemical & blended fabric rapidly under some tension, makes the size modes of fabric keep stable.Heating-up temperature is generally vitrification point T
gabove, and lower than crystalline melt temperatures T
m.In this embodiment, the technological parameter of macropore light-duty polypropylene hernia patch thermal finalization is as shown in table 3.
Table 3 heat setting process parameter and the rear key property of sizing
5. post processing
What medical synthetic filaments was formed after braiding and thermal finalization is the stable sticking patch fabric of size modes, also need the concrete purposes according to hernia paster product, be tailored into square, rectangle, circle, ellipse or erose flat sheets, or the net plug be hot pressed into according to concrete operation design or other stereochemical structures, then carry out cleaning, dry, packaging, sterilizing just can become final hernia patch product.
6. the mechanical property of the light-duty polypropylene hernia patch of the present embodiment macropore
1) with reference to the method that GB/T39233.1 specifies, the Cross breaking strength recording the light-duty hernia patch of this macropore is 106.8N, and transverse breakage percentage elongation is 69.8%; Its longitudinal fracture brute force is 199.7N, and longitudinal fracture percentage elongation is 62.4%;
2) with reference to the method that GB/T7742.1-2005 specifies, the BURSTING STRENGTH recording the light-duty hernia patch of this macropore is 116Kpa;
3) suture strength method of testing: specimen size 50mm × 50mm, stringer each 5 pieces to sample; Select high-strength stitching thread apart from 6mm place, sample edge through, suture clips is held in upper grip, and sample bottom vertical is sandwiched in lower chuck, and clamping is spaced 100mm, draw speed 100mm/min, and the suture strength of test sample is also averaged.Recording the horizontal suture strength of sticking patch is 32.7N, and longitudinal suture strength is 38.3N.
7. the light-duty polypropylene hernia patch of the present embodiment macropore and market properties of product contrast
The maximum uprising intensity that human body transverse fascia can bear is 20KPa, and maximum tension suffered by human body stomach wall is 16N/cm, can find out from the data of above-mentioned 6th article, the light-duty polypropylene hernia patch of the present embodiment macropore can bear the mechanical strength needed for Human Physiology completely.And the thickness of sticking patch, weight and mesh aperture size etc., to grow into situation to tissue, incidence rate and the human body foreign body sense of complication have a significant impact.To the present embodiment macropore light-duty polypropylene hernia patch and on the market macropore light-duty hernia patch OptileneElasticMesh (the bright Products of German shellfish), kind release LMA (sky, Beijing helps and freely transports Products) and VYPRO II (Johnson Co.'s product) contrasts about above performance, correction data is as shown in table 4.
Table 4 the present embodiment macropore light-duty polypropylene hernia patch and the light-duty hernia patch properties of product of market macropore contrast
Can be found out by table 4 Data Comparison, the light-duty polypropylene hernia patch of the present embodiment macropore adopts the diamond-shaped meshes structure of extensively accreditation on the market, in thickness, not quite in grammes per square metre, pore size and porosity, all have some superiority relative to the genial LMA of releasing of OptileneElasticMesh with three kinds of contrast product difference in table 4.VYPRO II sticking patch of Johson & Johnson is the composite braided part Absorbable rod sticking patch of PP and PGLA, and its initial weight reaches 75g/m
2, larger foreign body sensation can be brought at the implantation initial stage to patient, although weight can drop to 35g/m after its degraded
2, but also little with embodiment of the present invention macropore light-duty polypropylene hernia patch weight differential.Illustrate that the present embodiment macropore light-duty polypropylene hernia patch is compared with the light-duty hernia patch product of macropore on the market, improve the comfort level of patient, anti-infection ability and tissue to grow into etc. in all there is advantage.
Embodiment 2
1. the selection of macropore light-duty nonabsorable hernia patch raw material
The present embodiment selects polypropylene for medical article monofilament to be raw material, and material performance is as shown in table 5.
Table 5 Material selec-tion and performance
| Raw material type | Diameter (mm) | Fracture strength (g/d) | Elongation at break (%) |
| PP monofilament | 0.2 | 5.8 | 30 |
2. warping process
The present embodiment adopts section warping, is divided into the segmentation warp beam that several parts are wound into narrow width, then segmentation warp beam is assembled into the warp beam on tricot machine by required whole monofilament raw materials.
3. the weaving parameter of the light-duty nonabsorable hernia patch of macropore
This macropore light-duty nonabsorable hernia patch is undertaken woven by the warp knitting technology in textile technology, and the tissue pad yarn movement locus that this embodiment adopts is as shown in Fig. 1 (a), and concrete knitting technology is as shown in table 6.
Table 6 knitting technology parameter
4. the heat setting process parameter of the light-duty nonabsorable hernia patch of macropore
In this embodiment, the technological parameter of macropore light-duty polypropylene hernia patch thermal finalization is as shown in table 7.
Table 7 heat setting process parameter and the rear key property of sizing
5. post processing
Postprocessing working procedures is with embodiment 1.
6. the mechanical property of the light-duty nonabsorable hernia patch of the present embodiment macropore
1) with reference to the method that GB/T39233.1 specifies, the Cross breaking strength recording the light-duty hernia patch of this macropore is 224.8N, and transverse breakage percentage elongation is 93.1%; Its longitudinal fracture brute force is 317.5N, and longitudinal fracture percentage elongation is 62.5%;
2) with reference to the method that GB/T7742.1-2005 specifies, the BURSTING STRENGTH recording the light-duty hernia patch of this macropore is 209Kpa;
3) suture strength method of testing: specimen size 50mm × 50mm, stringer each 5 pieces to sample; Select high-strength stitching thread apart from 6mm place, sample edge through, suture clips is held in upper grip, and sample bottom vertical is sandwiched in lower chuck, and clamping is spaced 100mm, draw speed 100mm/min, and the suture strength of test sample is also averaged.Recording the horizontal suture strength of sticking patch is 41.7N, and longitudinal suture strength is 45.2N.
Embodiment 3
1. the selection of macropore light-duty nonabsorable hernia patch raw material
The present embodiment selects medical polyvinylidene fluoride monofilament to be raw material, and material performance is as shown in table 8.
Table 8 Material selec-tion and performance
| Raw material type | Diameter (mm) | Fracture strength (g/d) | Elongation at break (%) |
| PVDF monofilament | 0.08 | 3.2 | 25 |
2. warping process
The present embodiment adopts section warping, is divided into the segmentation warp beam that several parts are wound into narrow width, then segmentation warp beam is assembled into the warp beam on tricot machine by required whole monofilament raw materials.
3. the weaving parameter of the light-duty nonabsorable hernia patch of macropore
This macropore light-duty nonabsorable hernia patch is undertaken woven by the warp knitting technology in textile technology, and the tissue pad yarn movement locus that this embodiment adopts is as shown in Fig. 1 (b), and concrete knitting technology is as shown in table 9.
Table 9 knitting technology parameter
4. the heat setting process parameter of the light-duty nonabsorable hernia patch of macropore
In this embodiment, the technological parameter of macropore light-duty polyvinylidene fluoride hernia patch thermal finalization is as shown in table 10.
Table 10 heat setting process parameter and the rear key property of sizing
5. post processing
Postprocessing working procedures is with embodiment 1.
6. the mechanical property of the light-duty nonabsorable hernia patch of the present embodiment macropore
1) with reference to the method that GB/T39233.1 specifies, the Cross breaking strength recording the light-duty hernia patch of this macropore is 95.1N, and transverse breakage percentage elongation is 70.3%; Its longitudinal fracture brute force is 112.5N, and longitudinal fracture percentage elongation is 58.6%;
2) with reference to the method that GB/T7742.1-2005 specifies, the BURSTING STRENGTH recording the light-duty hernia patch of this macropore is 46Kpa;
3) suture strength method of testing: specimen size 50mm × 50mm, stringer each 5 pieces to sample; Select high-strength stitching thread apart from 6mm place, sample edge through, suture clips is held in upper grip, and sample bottom vertical is sandwiched in lower chuck, and clamping is spaced 100mm, draw speed 100mm/min, and the suture strength of test sample is also averaged.Recording the horizontal suture strength of sticking patch is 22.7N, and longitudinal suture strength is 26.2N.
Embodiment 4
1. the selection of macropore light-duty nonabsorable hernia patch raw material
The present embodiment selects medical monofilament polyester to be raw material, and material performance is as shown in table 11.
Table 11 Material selec-tion and performance
| Raw material type | Diameter (mm) | Fracture strength (g/d) | Elongation at break (%) |
| PET monofilament | 0.1 | 5.0 | 30 |
2. warping process
The present embodiment adopts section warping, is divided into the segmentation warp beam that several parts are wound into narrow width, then segmentation warp beam is assembled into the warp beam on tricot machine by required whole monofilament raw materials.
3. the weaving parameter of the light-duty nonabsorable hernia patch of macropore
This macropore light-duty nonabsorable hernia patch is undertaken woven by the warp knitting technology in textile technology, and the tissue pad yarn movement locus that this embodiment adopts is as shown in Fig. 2 (d), and concrete knitting technology is as shown in table 12.
Table 12 knitting technology parameter
4. the heat setting process parameter of the light-duty nonabsorable hernia patch of macropore
In this embodiment, the technological parameter of macropore lightweight polyester hernia patch thermal finalization is as shown in table 13.
Table 13 heat setting process parameter and the rear key property of sizing
5. post processing
Postprocessing working procedures is with embodiment 1.
6. the mechanical property of the light-duty nonabsorable hernia patch of the present embodiment macropore
1) with reference to the method that GB/T39233.1 specifies, the Cross breaking strength recording the light-duty hernia patch of this macropore is 175.3N, and transverse breakage percentage elongation is 65.2%; Its longitudinal fracture brute force is 261.8N, and longitudinal fracture percentage elongation is 46.4%;
2) with reference to the method that GB/T7742.1-2005 specifies, the BURSTING STRENGTH recording the light-duty hernia patch of this macropore is 192Kpa;
3) suture strength method of testing: specimen size 50mm × 50mm, stringer each 5 pieces to sample; Select high-strength stitching thread apart from 6mm place, sample edge through, suture clips is held in upper grip, and sample bottom vertical is sandwiched in lower chuck, and clamping is spaced 100mm, draw speed 100mm/min, and the suture strength of test sample is also averaged.Recording the horizontal suture strength of sticking patch is 38.4N, and longitudinal suture strength is 47.6N.
Embodiment 5
1. the selection of macropore light-duty Absorbable rod hernia patch raw material
PLA, PGLA, PGCL and PHA etc. are for having the absorbable material of good biocompatibility, the complete Absorbable rod hernia patch be woven into by it, can be used as Peritoneal Defects patching material and the temporary patching material having the Abdominal Incisional Hernia of infective wound surface and defect, when not leading to complications, interim recovery stomach wall seriality, helps patient to spend the critical days of disease.The present embodiment selects medical polyhydroxyalkanoate monofilament to be raw material, and to weave the light-duty Absorbable rod hernia patch of macropore, material performance is as shown in table 14.
Table 14 Material selec-tion and performance
| Raw material type | Diameter (mm) | Fracture strength (g/d) | Elongation at break (%) |
| PHA monofilament | 0.15 | 6.5 | 35 |
2. warping process
The present embodiment adopts section warping, is divided into the segmentation warp beam that several parts are wound into narrow width, then segmentation warp beam is assembled into the warp beam on tricot machine by required whole monofilament raw materials.
3. the weaving parameter of the light-duty Absorbable rod hernia patch of macropore
This macropore light-duty Absorbable rod hernia patch is undertaken woven by the warp knitting technology in textile technology, and the tissue pad yarn movement locus that this embodiment adopts is as shown in Fig. 2 (b), and concrete knitting technology is as shown in Table 15.
Table 15 knitting technology parameter
4. the heat setting process parameter of the light-duty Absorbable rod hernia patch of macropore
In this embodiment, the technological parameter of macropore light-duty Absorbable rod hernia patch thermal finalization is shown in table 16.
Table 16 heat setting process parameter and the rear key property of sizing
5. post processing
Postprocessing working procedures is with embodiment 1.
6. the mechanical property of the light-duty Absorbable rod hernia patch of the present embodiment macropore
1) with reference to the method that GB/T39233.1 specifies, the Cross breaking strength recording the light-duty hernia patch of this macropore is 241.6N, and transverse breakage percentage elongation is 78.6%; Its longitudinal fracture brute force is 334.9N, and longitudinal fracture percentage elongation is 61.4%;
2) with reference to the method that GB/T7742.1-2005 specifies, the BURSTING STRENGTH recording the light-duty hernia patch of this macropore is 248Kpa;
3) suture strength method of testing: specimen size 50mm × 50mm, stringer each 5 pieces to sample; Select high-strength stitching thread apart from 6mm place, sample edge through, suture clips is held in upper grip, and sample bottom vertical is sandwiched in lower chuck, and clamping is spaced 100mm, draw speed 100mm/min, and the suture strength of test sample is also averaged.Recording the horizontal suture strength of sticking patch is 46.2N, and longitudinal suture strength is 53.9N.
Claims (9)
1. the light-duty hernia patch of macropore, is characterized in that: the structure of described hernia patch is that two comb skies that medical synthetic filaments is woven into wear change chaining warp sateen eyelet stitch structure; Described hernia patch is mesh fabric, and its surface mesh assumes diamond in shape; The aperture of described hernia patch is 2.6 ~ 7.5mm, and grammes per square metre is 18 ~ 55g/m
2.
2. the light-duty hernia patch of macropore according to claim 1, is characterized in that: described two comb sky is worn change chaining warp sateen eyelet stitch structure and referred to that two sley bars are one and have worn, and does symmetrical change chaining atlas lap and to move the eyed structure formed; The above change chaining warp sateen to refer in a complete organization of three pin warp sateens on each pad yarn direction the tissue that equity between two adjacent switch-back circles adds chaining pad yarn and formed, the chaining pad yarn motion line number wherein same pad yarn direction added between two adjacent switch-back circles is 1 ~ 6, and organizes the opening and closing degree of lip-rounding formula of coil can carry out change arbitrarily and configuration.
3. the light-duty hernia patch of macropore according to claim 1, is characterized in that: the lateral density of described hernia patch is: 15 ~ 40 stringer/5cm, and density is: 36 ~ 145 line/5cm.
4. the light-duty hernia patch of macropore according to claim 1, it is characterized in that: described medical synthetic filaments comprises polypropylene monofilament, monofilament polyester, politef monofilament, polyvinylidene fluoride monofilament, polylactic acid monofilament, poly (glycolide-lactide) monofilament, Acetic acid, hydroxy-, bimol. cyclic ester-caprolactone copolymer monofilament, polyhydroxyalkanoate monofilament.
5. the light-duty hernia patch of macropore according to claim 1, is characterized in that: the diameter range of described medical synthetic filaments is 0.08 ~ 0.2mm, and fracture strength is 2.8 ~ 7.5g/d, and elongation at break is 15% ~ 40%.
6. the light-duty hernia patch of macropore according to claim 1, is characterized in that: the porosity of described hernia patch is 89% ~ 98%, and thickness is 0.4 ~ 0.78mm.
7. the light-duty hernia patch of macropore according to claim 1, it is characterized in that: described hernia patch is tailored into square, rectangle, circle, ellipse or erose flat sheets, or the net plug be hot pressed into according to concrete operation design or other stereochemical structures.
8. the light-duty hernia patch of macropore according to claim 4, is characterized in that: described medical synthetic filaments is polypropylene monofilament or monofilament polyester, can be compounded to form light-duty composite patch with adherence preventing material or absorbable material.
9. the weaving method of the light-duty hernia patch of macropore according to claim 1, it is characterized in that: comprise the steps: on tricot machine, two sley bars are installed, medical synthetic filaments gets off from unwinding warp beam, enter cam system according to certain warp run-in, two sley bars are one and have worn, and wear change chaining warp sateen eyelet stitch pad yarn digital according to two comb sky, front comb and rear comb sley point symmetrical pad yarn, form mesh fabric.
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