CN101823338A - Rapid forming method of plug at end part of silicon rubber conduit - Google Patents
Rapid forming method of plug at end part of silicon rubber conduit Download PDFInfo
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- CN101823338A CN101823338A CN200910078712A CN200910078712A CN101823338A CN 101823338 A CN101823338 A CN 101823338A CN 200910078712 A CN200910078712 A CN 200910078712A CN 200910078712 A CN200910078712 A CN 200910078712A CN 101823338 A CN101823338 A CN 101823338A
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Abstract
The invention discloses a rapid forming method of a plug at the end part of a silicon rubber conduit, belonging to the field of medical silicon rubber processing. The method comprises the following steps of: inserting a metal core rod, the external diameter of which is same as the internal diameter of the silicon rubber conduit, into the silicon rubber conduit, and meanwhile, heating a plugging mould to a preset temperature; then placing a silicon rubber plugging material into the front ends of the silicon rubber conduct and the metal core rod to form a spare pressure body, putting the spare pressure body into the inner cavity of the plugging mould, and applying pressure to the plugging mould and keeping for a certain time; then drawing out the spare pressure body from the inner cavity of the plugging mould, and drawing out the core rod to obtain a conduct with plugged end part. The invention has simple process, and needs no complex working procedures, such as polishing and the like; a plugging material and a rubber pipe belong to the same type of material, have good integrity after the plugging, no obvious interfaces, no corrosion to the mould and rapid formation, thereby improving the working efficiency; and the obtained plug conduct has smooth end and irregular shape and accords with the requirements on quality and clinic practice of the type of product.
Description
Technical field
The invention belongs to the medical grade silicon rubber manufacture field, particularly the plug at end part of silicon rubber conduit rapid shaping technique.
Background technology
Silicon rubber has excellent physiology inertia and biocompatibility, resistance to ag(e)ing under the severe rugged environment condition, for a long time contact non-toxic reaction with body fluid, tissue and blood, with the surrounding tissue adhesion, surrounding tissue is not caused inflammation etc., thereby be widely used in the medical domain, such as various medical silastic vessels, artificial organs or the like.
Need plug at end part (as round end) to handle the silicon catheter of extensive use (as silicon rubber stomach tube, silica fubber cathete, ventricular drainage tube etc.), the general at present technology that adopts has: 1. bonding back mechanical grinding, this method complex process, efficient is low, processing cost is higher, and end surface is coarse; 2. bonding again after the compression molding, the same complex process of this method, processing cost is higher, and is higher to the caliber tolerance simultaneously, and the bonding bad hidden danger that comes off is arranged; 3. silicone rubber adhesive shutoff, this technology then need 24 hours ability to solidify fully, and corrosion deposits yields corrosion mould is arranged.
Summary of the invention
The objective of the invention is to solve the deficiencies in the prior art, the quick molding method that a kind of technology is simple, the plug at end part of silicon rubber conduit of mould fast, is not corroded in moulding is provided.
For achieving the above object, the present invention by the following technical solutions:
A kind of quick molding method of plug at end part of silicon rubber conduit may further comprise the steps:
1) the external diameter metal mandrel identical with the silicon catheter internal diameter, insert in the silicon catheter, simultaneously the shutoff mold heated is arrived predetermined temperature;
2) the silicon rubber plugging material is placed silicon catheter and metal mandrel front end form and press body fully;
3) will press body to place the inner chamber of shutoff mould fully, the shutoff mould is applied and keep-ups pressure a period of time;
4) pressing body from the shutoff dies cavity, to extract fully, extract plug out, promptly obtain the conduit behind the plug at end part.
In the quick molding method of above-mentioned plug at end part of silicon rubber conduit, the metal mandrel front end end face that inserts silicon catheter is concordant.
In the quick molding method of above-mentioned plug at end part of silicon rubber conduit, the metal mandrel front end end face that inserts silicon catheter is shorter or long than silicon catheter front end face.
In the quick molding method of above-mentioned plug at end part of silicon rubber conduit, the silicon catheter leading section is for putting down mouth or being flap.
In the quick molding method of above-mentioned plug at end part of silicon rubber conduit, the shutoff mold temperature is 120～160, and it is 100～500N that the shutoff mould is exerted pressure, and the retention time is 2～6min.
In the quick molding method of above-mentioned plug at end part of silicon rubber conduit, the inner chamber end shape of shutoff mould is determined according to the desired end of conduit shape that obtains, can be hemispherical, coniform or other shapes.
In the quick molding method of above-mentioned plug at end part of silicon rubber conduit, described plugging material is the solid adhesive tape, is pressed in during use on the plug front end face.
In the quick molding method of above-mentioned plug at end part of silicon rubber conduit, described plugging material is a liquid glue, during use with point gum machine or similarly mechanical presses on the plug front end face.
Adopt the inventive method, technology is simple, does not need complicated procedures of forming such as mechanical grinding; Plugging material and rubber tube are same class material, and be integrated good after the shutoff, do not have obvious interface, and to not corrosion of mould, moulding is quick, only needs several minutes can finish the shutoff process by heat pressing process, has improved operating efficiency; The end socket catheter product termination that obtains is level and smooth, and shape is regular, meets the quality and the clinical instructions for use of this series products.
Description of drawings
Fig. 1 represents that the embodiment of the invention one carries out the forming process of plug at end part of silicon rubber conduit; (1) is shown as the step of type to (four) sequence list.
Fig. 2 represents that the embodiment of the invention two carries out the forming process of plug at end part of silicon rubber conduit; (1) is shown as the step of type to (four) sequence list.
Fig. 3 represents that the embodiment of the invention three carries out the forming process of plug at end part of silicon rubber conduit; (1) is shown as the step of type to (four) sequence list.
The specific embodiment
The quick molding method of plug at end part of silicon rubber conduit of the present invention, the shutoff raw material adopts addition-type silicon rubber (can be solid gum, also can be liquid glue); The shutoff mould adopts metal processing, and the inner chamber of mould is processed according to the desired end of conduit shape that obtains (as hemispherical, coniform or other shapes).At first the shutoff mold heated is arrived predetermined temperature, then the external diameter metal mandrel identical with the silicon catheter internal diameter, insert silicon catheter, make plug end face concordant with the conduit end face (also can being shorter than or exceeding) according to different requirements, the silicon rubber that shutoff is used can be made solid adhesive tape, with tweezers quantitative adhesive tape is pressed on the plug end face, with anchor clamps conduit is clamped, be pressed into mould, apply and keep certain pressure, keep certain hour after, conduit is extracted, extract plug out, promptly obtain the conduit of required end shape.
Below in conjunction with specific embodiment in detail the inventive method is described in detail.
Embodiment one, the shutoff forming process when end of conduit is the plane
Present embodiment is described end of conduit is cut into the operating process that shutoff is carried out on the plane again.
As shown in Figure 1, the 1st, the silica gel catheter that carry out the plug at end part moulding, its end is the plane; The 2nd, metal mandrel, its external diameter is identical with the internal diameter of silica gel catheter; The 3rd, the silicon rubber that shutoff is used is solid adhesive tape; The 4th, the shutoff mould, its cavity shape is the end of conduit shape of wishing to obtain (among the figure be example with the hemispherical).During enforcement, referring to Fig. 1 step () to (four), at first shutoff mould 4 is heated to predetermined temperature (120～160 ℃), then metal mandrel 2 is inserted in the silicon catheter 1, make plug 2 front end faces concordant with conduit 1 front end face (also can being shorter than or exceeding according to different requirements), plug 2 other ends grow conduit 1 tail end and are beneficial to hand-held; Quantitative with the tweezers handle (according to the inside and outside footpath size of conduit and the size of end shape, calculate volume substantially, can draw the weight of required sizing material) adhesive tape 3 be pressed on plug 2 front end faces, plug 2, conduit 1 and adhesive tape 3 form one and press body fully like this, press this body to clamp fully with anchor clamps then, be pressed into mould 4 inner chambers; Apply certain pressure (100～500N) and keep certain hour (2～6min) after to mould 4 this moment, conduit 1 is extracted together with plug 2, this moment, adhesive tape 3 was connected as a single entity with conduit 1 front end face, extracted plug 2 out from conduit 1 tail end, promptly obtained the conduit of required end shape.
Here, adhesive tape quantitatively be according to the inside and outside footpath size of conduit and the size of end shape, calculate substantially volume, can draw the weight of required sizing material.
Shutoff forming process when embodiment two, end of conduit are cut into several flap
Present embodiment is described end of conduit is cut into the operating process that several flaps are carried out shutoff again.
As shown in Figure 2, the 1st, the silica gel catheter that carry out the plug at end part moulding, its end is cut into four lobes (also can other a plurality of lobes); The 2nd, metal mandrel, its external diameter is identical with the internal diameter of silica gel catheter, and the end is hemispherical or coniform (among the figure be example with coniform); The 3rd, the silicon rubber that shutoff is used is solid adhesive tape; The 4th, shutoff mould, its cavity shape are hemispherical or coniform (among the figure be example with hemispherical).During enforcement, referring to Fig. 2 step () to (four), at first shutoff mould 4 is heated to predetermined temperature (120～160 ℃), then metal mandrel 2 is inserted in the silicon catheter 1, make plug 2 front end faces concordant with conduit 1 front end face (also can being shorter than or exceeding according to different requirements), plug 2 other ends grow conduit 1 tail end and are beneficial to hand-held; With tweezers quantitative adhesive tape 3 (quantitative approach is identical with embodiment one) is pressed on plug 2 front end faces, plug 2, conduit 1 and adhesive tape 3 form one and press body fully like this, press this body to clamp fully with anchor clamps, be pressed into the inner chamber of mould 4, apply certain pressure (100～500N) and keep certain hour (after 2～6min), conduit 1 is extracted together with plug 2, this moment, adhesive tape 3 was connected as a single entity with conduit 1 front end face, extract plug 2 out from conduit 1 tail end, promptly obtain the conduit of required end shape (among the figure be example with the hemispherical).
Embodiment three, employing liquid plugging material carry out the shutoff forming process to end of conduit
Present embodiment is described end of conduit is cut into the operating process that shutoff is carried out on the plane again.
As shown in Figure 3, the 1st, the silica gel catheter that carry out the plug at end part moulding, its end is the plane; The 2nd, metal mandrel, its external diameter is a point gum machine with the internal diameter identical 3 of silica gel catheter, in have shutoff to use liquid silastic, but the extrusion capacity 4 of liquid with precise control silicon rubber is the shutoff mould, its cavity shape is the end of conduit shape of wishing to obtain (among the figure be example with the hemispherical); The 5th, the glue of pointing out from point gum machine drips.During enforcement, referring to Fig. 3 step () to (four), at first shutoff mould 4 is heated to predetermined temperature (120～160 ℃), then metal mandrel 2 is inserted in the silicon catheter 1, make plug 2 front end faces concordant with conduit 1 front end face (also can being shorter than or exceeding according to different requirements), plug 2 other ends grow conduit 1 tail end and are beneficial to hand-held; With point gum machine the quantitative liquid silastic of (quantitative approach is identical with embodiment one) is extruded, be squeezed on plug 2 front end faces, plug 2, conduit 1 and glue drip 5 one of formation and press body fully like this, with anchor clamps this are pressed the body clamping fully then, are pressed into mould 4 inner chambers; Apply certain pressure (100～500N) and keep certain hour (2～6min) after to mould 4 this moment, conduit 1 is extracted together with plug 2, glue dripped 5 and was connected as a single entity with conduit 1 front end face this moment, extracted plug 2 out from conduit 1 tail end, promptly obtained the conduit of required end shape.
More than introduced the multiple method of utilizing technical solution of the present invention to carry out the moulding of plug at end part of silicon rubber conduit, from operating process, compared with prior art, the present invention has following characteristics:
1) technology is simple, does not need the complicated procedures of forming such as mechanical grinding;
2) plugging material and rubber tube are the same class material, do not need to use the adhesive that contains other component, and the conduit material after the shutoff is single, and the in-vivo tissue acceptance is good during application; And on structure, end socket and conduit are integrated good, do not have obvious interface; From environmental angle, do not use adhesive, in the shutoff process mould is not corroded;
3) moulding is quick, by heat pressing process, can finish the shutoff process in 2～6min, has improved operating efficiency.
In addition, from the end socket catheter product quality that obtains, the conduit that the present invention obtains, the termination is level and smooth, and shape is regular, meets quality and the clinical instructions for use of this series products.
Claims (9)
1. the quick molding method of a plug at end part of silicon rubber conduit may further comprise the steps:
1) the external diameter metal mandrel identical with the silicon catheter internal diameter, insert in the silicon catheter, simultaneously the shutoff mold heated is arrived predetermined temperature;
2) the silicon rubber plugging material is placed silicon catheter and metal mandrel front end form and press body fully;
3) will press body to place the inner chamber of shutoff mould fully, the shutoff mould is applied and keep-ups pressure a period of time;
4) pressing body from the shutoff dies cavity, to extract fully, extract plug out, promptly obtain the conduit behind the plug at end part.
2. according to the quick molding method of the described plug at end part of silicon rubber conduit of claim 1, it is characterized in that the metal mandrel front end end face that inserts silicon catheter is concordant.
3. according to the quick molding method of the described plug at end part of silicon rubber conduit of claim 1, it is characterized in that the metal mandrel front end end face that inserts silicon catheter is shorter or long than silicon catheter front end face.
4. according to the quick molding method of the described plug at end part of silicon rubber conduit of claim 1, it is characterized in that the silicon catheter leading section is flat mouthful.
5. according to the quick molding method of the described plug at end part of silicon rubber conduit of claim 1, it is characterized in that the silicon catheter leading section is a flap.
6. according to the quick molding method of the described plug at end part of silicon rubber conduit of claim 1, it is characterized in that the shutoff mold temperature is 120～160, it is 100～500N that the shutoff mould is exerted pressure, and the retention time is 2～6min.
7. according to the quick molding method of the described plug at end part of silicon rubber conduit of claim 1, it is characterized in that the inner chamber end shape of shutoff mould is determined according to the desired end of conduit shape that obtains, can be hemispherical, coniform or other shapes.
8. according to the quick molding method of the arbitrary described plug at end part of silicon rubber conduit of claim 1 to 7, it is characterized in that described plugging material is the solid adhesive tape, be pressed in during use on the plug front end face.
9. according to the quick molding method of the arbitrary described plug at end part of silicon rubber conduit of claim 1 to 7, it is characterized in that described plugging material is a liquid glue, during use with point gum machine or similarly mechanical presses on the plug front end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910078712A CN101823338A (en) | 2009-03-02 | 2009-03-02 | Rapid forming method of plug at end part of silicon rubber conduit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910078712A CN101823338A (en) | 2009-03-02 | 2009-03-02 | Rapid forming method of plug at end part of silicon rubber conduit |
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| CN101823338A true CN101823338A (en) | 2010-09-08 |
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| CN200910078712A Pending CN101823338A (en) | 2009-03-02 | 2009-03-02 | Rapid forming method of plug at end part of silicon rubber conduit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034343A (en) * | 2015-08-14 | 2015-11-11 | 深圳市沃尔核材股份有限公司 | Filling-in device for hot melt colloidal particles |
| CN110948843A (en) * | 2019-12-09 | 2020-04-03 | 河南驼人医疗器械研究院有限公司 | Silica gel tube tip forming method |
| CN112169138A (en) * | 2020-10-30 | 2021-01-05 | 苏州伟康医疗器械有限公司 | End cap bonding process of catheter and catheter |
| CN113172391A (en) * | 2020-01-24 | 2021-07-27 | 大众汽车股份公司 | Method for the production of a closed hollow shaft |
| CN113400665A (en) * | 2021-06-11 | 2021-09-17 | 上海达华药业有限公司 | Method for loading medicine core rod into tube |
| CN115105970A (en) * | 2021-03-18 | 2022-09-27 | 中国科学院青岛生物能源与过程研究所 | Preparation method of tubular ceramic membrane with one sealed end |
-
2009
- 2009-03-02 CN CN200910078712A patent/CN101823338A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034343A (en) * | 2015-08-14 | 2015-11-11 | 深圳市沃尔核材股份有限公司 | Filling-in device for hot melt colloidal particles |
| CN110948843A (en) * | 2019-12-09 | 2020-04-03 | 河南驼人医疗器械研究院有限公司 | Silica gel tube tip forming method |
| CN113172391A (en) * | 2020-01-24 | 2021-07-27 | 大众汽车股份公司 | Method for the production of a closed hollow shaft |
| CN112169138A (en) * | 2020-10-30 | 2021-01-05 | 苏州伟康医疗器械有限公司 | End cap bonding process of catheter and catheter |
| CN115105970A (en) * | 2021-03-18 | 2022-09-27 | 中国科学院青岛生物能源与过程研究所 | Preparation method of tubular ceramic membrane with one sealed end |
| CN113400665A (en) * | 2021-06-11 | 2021-09-17 | 上海达华药业有限公司 | Method for loading medicine core rod into tube |
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Application publication date: 20100908 |