CN101040797A - Two-step flexible top end dilater and the method for preparing the same - Google Patents
Two-step flexible top end dilater and the method for preparing the same Download PDFInfo
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- CN101040797A CN101040797A CN 200710072882 CN200710072882A CN101040797A CN 101040797 A CN101040797 A CN 101040797A CN 200710072882 CN200710072882 CN 200710072882 CN 200710072882 A CN200710072882 A CN 200710072882A CN 101040797 A CN101040797 A CN 101040797A
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Abstract
A dual-step flexible sharp tension device and relative production relate to an expander and relative production a microtrauma insert medicine. Different rigid material layers form a tube body and a sharp of a long non-corn tube which the body and the sharp are integrated, with increased rigidity from inner to outer layer. The sharp is formed by mechanically non-corn grinding tube body, while the sharp comprises a flexible material and a rigid material in gradient distribution from the head. The production comprises that extruding two layers to form a tube body of expander, non-corn grinding into sharp and smooth treating the sharp. The invention can meet the flexibility and rigidity demands of expander, while the sharp head is flexible to reduce the hurt on luminal membrane, and the back of the sharp has high rigidity to confirm enough propelling force, and integrate the sharp with tube body to avoid dropping in operation, to improve safety.
Description
Technical field
The present invention relates to technical field of medical instruments, be specifically related to be applied to a kind of pair of rank flexible point dilator and preparation method thereof in Wicresoft's interventional medicine.
Background technology
Wicresoft's medical science interventional therapy is by the method for skin incision or direct puncture, introduces specific operating theater instruments, and diseased region is carried out corresponding treatment.Have that wound is little, efficient, safety, complication is few, convalescent period is short, repeatability is destroyed characteristics such as original anatomical structure by force and not.
Dilator involved in the present invention is a kind of utensil of using in Wicresoft's interventional therapy, is to be used for flexible tubular apparatus that the little otch of percutaneous or the percutaneous puncture passage of intravasation or human intracavity's pipe are expanded.Its using method is: in Wicresoft's interventional therapy, usually on its outer cover specific apparatus such as catheter sheath, dilator and outside overlap particular instrument and cooperate tightly intravasation or human lumen, extract dilator out, form the passage of particular instrument turnover body lumen.
According to domestic industry standard YY0450-1-2003 and international standard ZSO11070:1998, to dilator material and design guidelines requirement, dilator should have certain flexibility, and has enough rigidity so that the percutaneous puncture passage of expansion intravasation.Most advanced and sophisticated design should make the phenomenon that roll-backs when it enters tissue reduce to minimum.
Clinically to the various requirement of dilator, existing employed clinically dilator has as the purgation characteristics for satisfied:
1, end shape is elongated, is convenient to enter little otch or puncturing hole;
2, most advanced and sophisticated smooth rounding is few to tissue injury;
3, most advanced and sophisticated lip rounding off improves security of products.
Therefore, satisfy the requirement of international standard or industry standard basically.But, in rigidity and flexible grasp, also have certain distance in clinically application.What have produces product with flexible material, has the characteristics few to the tube chamber inner film injury, but the clinician thinks the rigidity deficiency, and inconvenience pushes; The rigid synthetic material of the usefulness that has is produced product, has guaranteed the rigidity of product, but the tip is soft inadequately, might cause damage to inner membrance, increases clinician's stress.In this structure, pipe shaft is made for the identical commaterial of rigidity with the tip.The product that also has welds on rigid material or bonding flexible tip, satisfy product flexibility and inflexible requirement, but flexible tip has the danger that comes off, and has reduced security of products.In this structure, pipe shaft is the different material of rigidity with the tip, and rigid material is that segmentation is connected with flexible material,
Summary of the invention
The present invention at the deficiencies in the prior art, starts with from the combination of material and material on the basis of summing up prior art, is intended to release a kind of dilator and manufacture method of brand new.
To achieve these goals, finish above-mentioned task, the technical scheme of two rank flexible point dilators of the present invention and manufacture method is as follows.
Of the present invention pair of rank flexible point dilator, in the structure, comprise that pipe shaft is with most advanced and sophisticated, the layers of material of different rigidity constitutes the pipe shaft of elongated centreless pipe with most advanced and sophisticated, the different rigidity material segmentation structure of prior art connect become the layering structure and connect, this innovation has fundamentally solved existing product on the structure in rigid material welding or bonding flexible tip, flexible tip might take place come off and cause producing the problem of clinical safety accident.The pipe shaft that the layers of material of described different rigidity constitutes is the integrative-structure of global formation with the tip.
Of the present invention pair of rank flexible point dilator, the material of described different rigidity fuses for layering heat.
Of the present invention pair of rank flexible point dilator, when fusing, described different rigidity layers of material heat strengthens to outer rigidity gradient from internal layer, the rigidity of inner layer material is littler than the rigidity of cladding material, internal layer is a flexible layer, skin is a rigid layer, thereby guarantees that dilator of the present invention is to pipe shaft and most advanced and sophisticated flexibility and inflexible requirement.
Of the present invention pair of rank flexible point dilator, the thickness of the different rigidity material that above-mentioned layering heat fuses can be different, adjust the thickness of flexible layer and rigid layer, can satisfy clinical in flexible and inflexible various requirement.
Of the present invention pair of rank flexible point dilator, its tip is to be formed through mechanical centreless grinding by pipe shaft, and the tip comprises the arrangement of gradients structure with flexible material and rigid material backward from the head, on the vertical section, present the tip of taper flexible layer and vertebra shape rigid layer.Both guaranteed the flexibility of most advanced and sophisticated head, guaranteed the rigidity at most advanced and sophisticated rear portion again, to realize flexible material and rigid material organic unity at the tip.
In the manufacture method of of the present invention pair of rank flexible point dilator, comprise two-layer extrude form dilator with manage, centreless grinding tapers off to a point, three steps of most advanced and sophisticated smooth treatment.
The two rank of the present invention flexible point dilator and preparation method thereof has been compared marked improvement with prior art.One, of the present invention pair of rank flexible point dilator, pipe shaft is formed by the different rigidity material, and rigidity is arrangement of gradients from inside to outside, and the thickness of different hardness layer is adjustable in process of production, can guarantee effectively clinically to flexible and inflexible requirement; Two, its tip is to be formed through mechanical centreless grinding by the pipe shaft body, along with conical posterior is launched, different materials expose out, thereby the flexibility that has formed from the beginning backward repeatedly reduces discharging row, repeatedly subtract thereby formed flexibility, make most advanced and sophisticated head flexible strong, reduced damage the tube chamber inner membrance, most advanced and sophisticated rear portion rigidity is strong, has guaranteed enough propelling movement power.Three,, can not come off in the clinical course, guarantee security of products because the tip becomes one with pipe shaft.
Description of drawings
Fig. 1 is the structural representation of of the present invention pair of rank flexible point dilator;
Fig. 2 is that two-layer the extruding of of the present invention pair of rank flexible point dilator manufacture method forms dilator with managing sketch map;
Fig. 3 is the centreless grinding of the of the present invention pair of rank flexible point dilator manufacture method sketch map that tapers off to a point;
Fig. 4 is the most advanced and sophisticated smooth treatment sketch map of of the present invention pair of rank flexible point dilator manufacture method.
Among the figure: 1, pipe shaft, 2, the tip, 3, flexible material layer (flexible layer), 4, rigid material layer (rigid layer), 5, extruding machine, 6, multi-layer co-extruded head, 7, grinder, 8, electric furnace, 9, machine oil heat transfer pond, 10, the silicone oil pond.
The specific embodiment
Below, introduce the specific embodiment of the present invention in conjunction with the accompanying drawings.
Of the present invention pair of rank flexible point dilator, in the structure, comprise pipe shaft (1) and most advanced and sophisticated (2), the layers of material of different rigidity constitutes the pipe shaft (1) and most advanced and sophisticated (2) of elongated centreless pipe, the different rigidity material segmentation structure of prior art connect become the layering structure and connect, this innovation has fundamentally solved existing product on the structure in rigid material welding or bonding flexible tip, flexible tip might take place come off and cause producing the problem of clinical safety accident.The pipe shaft (1) that the layers of material of described different rigidity constitutes is the integrative-structure of global formation with most advanced and sophisticated (2).
Of the present invention pair of rank flexible point dilator, the material of described different rigidity fuses for layering heat.
Of the present invention pair of rank flexible point dilator, when fusing, described different rigidity layers of material heat strengthens to outer rigidity gradient from internal layer, the rigidity of inner layer material is littler than the rigidity of cladding material, internal layer is flexible layer (3), skin is rigid layer (4), thereby guarantees that dilator of the present invention is to flexibility and the inflexible requirement of pipe shaft (1) with most advanced and sophisticated (2).
Of the present invention pair of rank flexible point dilator, the thickness of the different rigidity material that above-mentioned layering heat fuses can be different, adjust the thickness (4) of flexible layer (3) and rigid layer, can satisfy clinical in flexible and inflexible various requirement.
Of the present invention pair of rank flexible point dilator, its tip (2) is to be formed through mechanical centreless grinding by pipe shaft (1), tip (2) backward from the head, comprise arrangement of gradients structure with flexible material and rigid material, on the vertical section, present the tip (2) of taper flexible layer (3) and taper rigid layer (4).Both guarantee the flexibility of most advanced and sophisticated (2) head, guaranteed the rigidity at most advanced and sophisticated (2) rear portion again.
Of the present invention pair of rank flexible point dilator, flexible layer (3) selects for use thermoplastic synthetic material to make with rigid layer (4), just their rigidity difference.
Of the present invention pair of rank flexible point dilator, the size of its length, caliber can have multiple choices.
In the manufacture method of of the present invention pair of rank flexible point dilator, comprise that the two-layer formation dilator of extruding is that pipe shaft (1), centreless grinding taper off to a point (2), three steps of most advanced and sophisticated (2) smooth treatment with pipe.
Two-layerly extrude that to form dilator be in the step of pipe shaft (1) with pipe, process with two extruding machines (5) and a multi-layer co-extruded head (6), the material of different rigidity enters from two extruding machines (5) respectively, and dilator is that pipe shaft (1) is from multi-layer co-extruded head (6) extrusion molding with pipe.
Centreless grinding tapers off to a point in (2) step, is that an end of pipe shaft (1) grind to form round tip (1) with dilator with pipe with grinder (7).
In most advanced and sophisticated (1) smooth treatment step, adopt heating treatment method,, place the interior silicone oil in silicone oil pond (10) in machine oil heat transfer pond (9) to be heated with electric furnace (8) heating machine oil heat transfer pond (9), Nu Zhong silicone oil is moving at tip of the present invention (2), to carry out smooth treatment.
The above, it only is the preferred embodiment of the two rank of the present invention flexible point dilator and preparation method thereof, be not that technical scope of the present invention is imposed any restrictions, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention above any trickle modification, equivalent variations and modification that embodiment did.
Claims (10)
1, two rank flexible point dilator and preparation method thereof, comprise pipe shaft (1) and most advanced and sophisticated (2) in the structure of two rank flexible point dilator, it is characterized in that: the layers of material of different rigidity constitutes the pipe shaft (1) and most advanced and sophisticated (2) of elongated centreless pipe, and the pipe shaft (1) that the layers of material of described different rigidity constitutes is the integrative-structure of global formation with most advanced and sophisticated (2).
2, two rank flexible point dilator of narrating according to claim 1 and preparation method thereof is characterized in that: the material that constitutes the described different rigidity of pipe shaft (1) and most advanced and sophisticated (2) fuses for layering heat.
3, two rank flexible point dilator of narrating according to claim 1 and preparation method thereof, it is characterized in that: strengthen to outer rigidity gradient from internal layer when described different rigidity layers of material heat fuses, the rigidity of inner layer material is littler than the rigidity of cladding material, internal layer is flexible layer (3), and skin is rigid layer (4).
4, two rank flexible point dilator of narrating according to claim 3 and preparation method thereof is characterized in that: the flexible layer (3) that above-mentioned layering heat fuses can be adjusted with the thickness of rigid layer (4).
5, two rank flexible point dilator of narrating according to claim 1 and preparation method thereof, it is characterized in that: its tip (2) are to be formed through mechanical centreless grinding by pipe shaft (1), tip (2) backward from the head, comprise arrangement of gradients structure with flexible material and rigid material, on the vertical section, present the tip (2) of taper flexible layer (3) and taper rigid layer (4).
6, two rank flexible point dilator of being narrated according to claim 1 or 3 and preparation method thereof is characterized in that: flexible layer (3) selects for use thermoplastic synthetic material to make with rigid layer (4).
7, two rank flexible point dilator of narrating according to claim 1 and preparation method thereof, it is characterized in that: in the manufacture method of of the present invention pair of rank flexible point dilator, comprise that the two-layer formation dilator of extruding is that pipe shaft (1), centreless grinding taper off to a point (2), three steps of most advanced and sophisticated (2) smooth treatment with pipe.
8, two rank flexible point dilator of narrating according to claim 7 and preparation method thereof, it is characterized in that: two-layerly extrude that to form dilator be in the step of pipe shaft (1) with pipe, process with two extruding machines (5) and a multi-layer co-extruded head (6), the material of different rigidity enters from two extruding machines (5) respectively, and dilator is that pipe shaft (1) is from multi-layer co-extruded head (6) extrusion molding with pipe.
9, two rank flexible point dilator of narrating according to claim 7 and preparation method thereof is characterized in that: centreless grinding tapers off to a point in (2) step, is that an end of pipe shaft (1) grind to form round tip (1) with dilator with pipe with grinder (7).
10, two rank flexible point dilator of narrating according to claim 7 and preparation method thereof, it is characterized in that: in most advanced and sophisticated (1) smooth treatment step, adopt heating treatment method, with electric furnace (8) heating machine oil heat transfer pond (9), place the interior silicone oil in silicone oil pond (10) in machine oil heat transfer pond (9) to be heated, Nu Zhong silicone oil is moving at tip of the present invention (2), to carry out smooth treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100728822A CN100464719C (en) | 2007-01-18 | 2007-01-18 | Two-step flexible top end dilater and the method for preparing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100728822A CN100464719C (en) | 2007-01-18 | 2007-01-18 | Two-step flexible top end dilater and the method for preparing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101040797A true CN101040797A (en) | 2007-09-26 |
| CN100464719C CN100464719C (en) | 2009-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100728822A Expired - Fee Related CN100464719C (en) | 2007-01-18 | 2007-01-18 | Two-step flexible top end dilater and the method for preparing the same |
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| CN (1) | CN100464719C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102781302A (en) * | 2010-07-05 | 2012-11-14 | 奥林巴斯医疗株式会社 | Tube to be disposed in endoscope, and endoscope |
| CN105960212A (en) * | 2014-02-11 | 2016-09-21 | 史密夫和内修有限公司 | Flexible bone dilator |
| CN106938525A (en) * | 2017-04-28 | 2017-07-11 | 江苏康宏金属软管有限公司 | A kind of preparation method of the bourdon tube with FEP coatings |
| CN110801313A (en) * | 2013-12-05 | 2020-02-18 | 爱德华兹生命科学公司 | Prosthetic heart valve and delivery device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5104388A (en) * | 1990-05-08 | 1992-04-14 | Fbk International Corporation | Membrane splittable tubing |
| CN2154071Y (en) * | 1993-04-10 | 1994-01-26 | 中国人民解放军第二五四医院 | Disposable dilator for urethra |
| US6637435B2 (en) * | 1999-12-07 | 2003-10-28 | Cook Incorporated | Percutaneous dilational device |
| GB0130156D0 (en) * | 2001-12-18 | 2002-02-06 | Smiths Group Plc | Medico-surgical apparatus |
-
2007
- 2007-01-18 CN CNB2007100728822A patent/CN100464719C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102781302A (en) * | 2010-07-05 | 2012-11-14 | 奥林巴斯医疗株式会社 | Tube to be disposed in endoscope, and endoscope |
| CN102781302B (en) * | 2010-07-05 | 2015-05-06 | 奥林巴斯医疗株式会社 | Tube to be disposed in endoscope, and endoscope |
| CN110801313A (en) * | 2013-12-05 | 2020-02-18 | 爱德华兹生命科学公司 | Prosthetic heart valve and delivery device |
| CN110801313B (en) * | 2013-12-05 | 2022-04-05 | 爱德华兹生命科学公司 | Prosthetic heart valve and delivery device |
| CN105960212A (en) * | 2014-02-11 | 2016-09-21 | 史密夫和内修有限公司 | Flexible bone dilator |
| CN106938525A (en) * | 2017-04-28 | 2017-07-11 | 江苏康宏金属软管有限公司 | A kind of preparation method of the bourdon tube with FEP coatings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100464719C (en) | 2009-03-04 |
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