CN101774278B - Method for welding polyfluortetraethylene membrane by ultrasonic wave on medical appliance - Google Patents
Method for welding polyfluortetraethylene membrane by ultrasonic wave on medical appliance Download PDFInfo
- Publication number
- CN101774278B CN101774278B CN2010100334061A CN201010033406A CN101774278B CN 101774278 B CN101774278 B CN 101774278B CN 2010100334061 A CN2010100334061 A CN 2010100334061A CN 201010033406 A CN201010033406 A CN 201010033406A CN 101774278 B CN101774278 B CN 101774278B
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- medicine equipment
- bonding wire
- poly tetrafluoroethylene
- welding
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- 238000003466 welding Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000012528 membrane Substances 0.000 title abstract description 33
- 229940058401 polytetrafluoroethylene Drugs 0.000 claims description 86
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 86
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 86
- -1 polytetrafluoroethylene Polymers 0.000 claims description 54
- 239000003814 drug Substances 0.000 claims description 43
- 241000894006 Bacteria Species 0.000 claims description 6
- 230000004927 fusion Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 208000034189 Sclerosis Diseases 0.000 claims description 2
- 238000004023 plastic welding Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 8
- 239000004033 plastic Substances 0.000 abstract description 7
- 229920003023 plastic Polymers 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 10
- 210000004907 gland Anatomy 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- 206010036790 Productive cough Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 210000003802 sputum Anatomy 0.000 description 2
- 208000024794 sputum Diseases 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Abstract
The invention discloses a method for welding polyfluortetraethylene membrane by ultrasonic waves on a medical appliance, which is applied to the medical field and is characterized in that the joint surface of two separate parts is provided with at least one welding wire. A filtering membrane of polyfluortetraethylene is welded between the two separate parts of the medical appliance by setting the delay time, weld time, hardening time, pressure, amplitude values and the like by an ultrasonic welding technology, so the two plastic parts of the medical appliance and the polyfluortetraethylene membrane arranged between the two parts are fused to form a whole. The invention can enable the polyfluortetraethylene filtering membrane to be reliably fixed between the two parts, and thereby, gap can not be generated, thereby good sealing property of the medical appliance is further ensured.
Description
Technical field
The present invention relates to a kind of method that adopts the ultrasonic bonding mode on medicine equipment, to weld the polytetrafluoroethylene (PTFE) filter membrane.
Background technology
There are a lot of places to need to use the polytetrafluoroethylene (PTFE) filter membrane at present in the medicine equipment; As all using the polytetrafluoroethylene (PTFE) filter membrane in the apparatuses such as oxygen inhalation wet bottle, sputum aspirator, transfusion device, atomizer, the polytetrafluoroethylene (PTFE) filter membrane can be used to filter bacterium, prevents cross-infection.The effect of polytetrafluoroethylene (PTFE) filter membrane is to filter macromolecule contaminants such as bacterium, particle.At present in the manufacturing of medicine equipment with use industry, the sealing of medicine equipment mainly still by screw thread fix, heat seal or bonding connection.Adopt screw fixation method fixedly during the polytetrafluoroethylene (PTFE) filter membrane; Be that the polytetrafluoroethylene (PTFE) filter membrane is placed between two threaded connectors; Two parts of screwing then step up between two parts the polytetrafluoroethylene (PTFE) filter membrane; There is the insecure phenomenon of sealing in the mode of this set polytetrafluoroethylene (PTFE) filter membrane, and the polytetrafluoroethylene (PTFE) filter membrane might come off, and produces the gap; Bacterium can get into pure environment for use through the gap, makes the polytetrafluoroethylene (PTFE) filter membrane not have the effect of sealing, filtration bacterium.For the polytetrafluoroethylene (PTFE) filter membrane is fixed on the medicine equipment, generally all be to adopt bonding mode in the manufacturing of medicine equipment, be about to the polytetrafluoroethylene (PTFE) filter membrane and be connected between two parts of the medicine equipment that needs to isolate, filter through medical adhesive dressing.But these modes all can not make polytetrafluoroethylene (PTFE) filter membrane reliable fixation on medicine equipment.
Medicine equipment generally all requires in gnotobasis, to use in medical field, and this just requires the junction that strict sealing must be arranged.Ultrasonic welding method is used widely with device at present; Often be applied between the plastic cement and bonding between plastic cement and the metal etc.; But the use of making the field at medicine equipment is also not too professional; And the material to welding during ultrasonic bonding has certain restriction, and some material can be through the firm combination of ultrasonic bonding mode, like the two knee styrene of acrylonitrile and acrylic, acrylonitrile pair knee styrene
And between the Merlon; Some material then can not merge, and for example material such as polytetrafluoroethylene (PTFE) can not use ultrasonic wave to weld certainly.The material that medicine equipment is commonly used is plastics such as PVC; Simple polytetrafluoroethylene (PTFE) can not fuse with the medical PVC material; And how polytetrafluoroethylene (PTFE) to be connected on the medicine equipment through supersonic welding, thereby the sealing property of medicine equipment is strengthened greatly, at present also beyond example.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of method that the polytetrafluoroethylene (PTFE) filter membrane is welded on medicine equipment.
For solving the problems of the technologies described above, the technical scheme that the present invention taked is:
On medicine equipment,, comprise through ultrasonic vibration and heating, make two parts of medicine equipment form close-connected one Plastic Welding method together with the method for ultrasonic bonding poly tetrafluoroethylene; Between two parts of the medicine equipment that welds, be provided with the poly tetrafluoroethylene that is used to filter bacterium; Poly tetrafluoroethylene separates two parts before the welding; Weld latter two part and poly tetrafluoroethylene and form an integral body; Two part faying faces of the medicine equipment that welds are provided with bonding wire; Wherein the superolateral bonding wire of faying face is used for two parts of welding medicine equipment, and the faying face inboard has at least one bonding wire that two parts of the medicine equipment after the butt joint are compressed poly tetrafluoroethylene, and this bonding wire is positioned on the plastic material of medicine equipment;
Two parts of the medicine equipment that will weld and the poly tetrafluoroethylene that is arranged between these two parts are placed on the particular manufacturing craft of ultrasonic equipment, and configure weld interval, pressure and amplitude; Wherein comprise time delay, weld time, firm time weld interval;
After preparation is accomplished, start ultrasonic equipment, make the bonding wire fusion, pressurization, the sclerosis back is about to poly tetrafluoroethylene and is welded between two parts of medicine equipment.
The improvement of bonding wire according to the invention is: the basic structure of said bonding wire adopts planar guide formula structure, and its cross section is triangle or circle.
The improvement of said bonding wire also is: the overall structure of said bonding wire is any one in integral type, segmented, interrupted point type, interrupted circular arc type or the informal style structure; Wherein the integral type bonding wire is the bonding wire of a continuous integral body; Can be straight line and also can be broken line; The segmented bonding wire is the bonding wire that multistage is provided with at interval; Interrupted point type bonding wire is to constitute bonding wire one by a plurality of solder joints, and interrupted circular arc type bonding wire is the whole road bonding wire that the projection by a plurality of circular arcs constitutes, and informal style can be point, straight line, camber line, broken line etc. and combines the bonding wire that constitutes.
Owing to adopted technique scheme, the technological progress that the present invention obtained is:
Adopt the supersonic welding connection technology that two parts of medicine equipment and the polytetrafluoroethylene (PTFE) filter membrane that is positioned between two parts are welded together; Not only guaranteed the requirement of its sealing, and during ultrasonic bonding, directed polarization is good; Temperature is lower; Quick heating can not make plastics all melt, and has guaranteed the intact of medicine equipment; Be arranged on the bonding wire on two parts faying face; When welding through ultrasonic vibrator; Can make the bonding wire after the fusing see through the polytetrafluoroethylene (PTFE) filter membrane, further with fusing after another part fusion, the part of the contact bonding wire of poly tetrafluoroethylene also can be softened, expand because of action of ultrasonic waves in the supersonic welding termination process; Be convenient to bonding wire and see through poly tetrafluoroethylene, and bonding with the poly tetrafluoroethylene after softening; The polytetrafluoroethylene (PTFE) filter membrane has been fixed between two parts reliably, and can not produces any slit, further guarantee the medicine equipment excellent sealing performance.Wherein bonding wire basic structure is arranged to the planar guide formula, cross section is a triangle; Be applied on the solder side bigger in the medicine equipment; Can fully guarantee welding quality, when its overall structure is arranged to segmented or intermittent type, is convenient to bonding wire under pressure and sees through poly tetrafluoroethylene; And can practice thrift bonding wire, reduce welding cost.
Description of drawings
Fig. 1 is the combining structure diagrammatic sectional view of welding portion before the welding of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
Fig. 3 is the structural representation of segmented bonding wire;
Fig. 4 is interrupted point type bonding wire structural representation;
Fig. 5 is the structural representation of interrupted circular arc type bonding wire;
Fig. 6 is the structural representation of informal style bonding wire.
Wherein: 1, polytetrafluoroethylene (PTFE) filter membrane, 2, boss, 3, gland, 4, bonding wire, 5, bonding wire, 6, air inlet.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is explained further details:
Fig. 1 is when on a kind of medicine equipment, welding poly tetrafluoroethylene, the structure diagram when two parts medicine equipment that need weld and poly tetrafluoroethylene combination.This medicine equipment is the oxygen humidification bottle of lower end air inlet commonly used, and the material of this oxygen humidification bottle is PVC.In order to guarantee the pure of oxygen; Polytetrafluoroethylene (PTFE) filter membrane 1 is installed in oxygen input device usually; Oxygen input device comprise air inlet 6, gland 3 and with bottle all-in-one-piece boss 2, the polytetrafluoroethylene (PTFE) filter membrane and is pressed on the boss 2 through gland 3 between gland and boss; The faying face place of gland and boss is provided with integral type bonding wire 4,5 respectively; The cross section of bonding wire is a triangle, and wherein bonding wire 4 is positioned at the below of polytetrafluoroethylene (PTFE) filter membrane, is used to fuse fixedly polytetrafluoroethylene (PTFE) filter membrane.The operating process of welding is following:
The first step is checked mould, and bottle, polytetrafluoroethylene (PTFE) filter membrane and the gland of oxygen humidification bottle is placed on respectively on the particular manufacturing craft of ultrasonic equipment, and the three position is corresponding up and down;
Second step, open the ultrasonic wave control device, setting welding pressure is 4pa; Setting time delay is 0.80s, and weld time is 0.75s, and firm time is 0.35s;
The 3rd step; Start device for ultrasonic welding, open welding button fusing bonding wire, when the complete fusion of bonding wire; Bottle and gland are pressurizeed; Just can make bonding wire when faying face solidifies, form strong molecular link, boss, polytetrafluoroethylene (PTFE) filter membrane and gland on the bottle are linked together securely, make the three form an integral body.Wherein, when the complete fusion of bonding wire 4, can penetrate the polytetrafluoroethylene (PTFE) filter membrane in the middle of gland and the boss, further fuse with boss.
So just accomplished the whole process of welding polytetrafluoroethylene (PTFE) filter membrane on the oxygen humidification bottle.
Certainly the present invention is not limited only to the foregoing description, can also be applied in the medicine equipments such as atomizer, sputum aspirator; The material of this type of medicine instrument also is not limited only to the PVC material, can also be the plastic cement of other meltabilities.In a word, everyly through bonding wire the polytetrafluoroethylene (PTFE) filter membrane is welded on two technical schemes between the removable part and all drops within the protection domain of this right.
The said bonding wire of the present invention also is not limited only to the structure of the foregoing description; It can also be the segmented bonding wire structure that multistage as shown in Figure 3 is provided with at interval; The interrupted dot structure that constitutes a circle bonding wire by a plurality of solder joints shown in Figure 4; The interrupted circular arc type structure of the whole road bonding wire that the projection by a plurality of circular arcs shown in Figure 5 constitutes, shown in Figure 6 is the informal style bonding wire that is made up of point, straight line, camber line, broken line etc.
Claims (3)
- On medicine equipment with the method for ultrasonic bonding polytetrafluoroethylene (PTFE); Comprise through the ultrasonic vibration heating Plastic Welding method together; Make two parts of medicine equipment form close-connected one; It is characterized in that: between two parts of the medicine equipment that welds, be provided with the poly tetrafluoroethylene that is used to filter bacterium; Poly tetrafluoroethylene separates two parts before the welding, welds latter two part and poly tetrafluoroethylene and forms integral body, and the faying face of two parts of the medicine equipment that welds is provided with bonding wire; Wherein the superolateral bonding wire of faying face is used for two parts of welding medicine equipment, and the faying face inboard has at least one bonding wire that two parts of the medicine equipment after the butt joint are compressed poly tetrafluoroethylene;Two parts of the medicine equipment that will weld and the poly tetrafluoroethylene that is arranged between these two parts are placed on the particular manufacturing craft of ultrasonic equipment, and configure weld interval, pressure and amplitude; Wherein comprise time delay, weld time, firm time weld interval;Start ultrasonic equipment, make the bonding wire fusion, pressurization, the sclerosis back is about to poly tetrafluoroethylene and is welded between two parts of medicine equipment.
- 2. according to claim 1 on medicine equipment with the method for ultrasonic bonding poly tetrafluoroethylene, it is characterized in that: said bonding wire basic structure is planar guide formula structure, and its cross section is triangle or circle.
- 3. according to claim 1 and 2 on medicine equipment with the method for ultrasonic bonding poly tetrafluoroethylene, it is characterized in that: the overall structure of said bonding wire is any one in integral type, segmented, interrupted point type, interrupted circular arc type or the informal style structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100334061A CN101774278B (en) | 2010-01-21 | 2010-01-21 | Method for welding polyfluortetraethylene membrane by ultrasonic wave on medical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100334061A CN101774278B (en) | 2010-01-21 | 2010-01-21 | Method for welding polyfluortetraethylene membrane by ultrasonic wave on medical appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101774278A CN101774278A (en) | 2010-07-14 |
| CN101774278B true CN101774278B (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100334061A Active CN101774278B (en) | 2010-01-21 | 2010-01-21 | Method for welding polyfluortetraethylene membrane by ultrasonic wave on medical appliance |
Country Status (1)
| Country | Link |
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| CN (1) | CN101774278B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529473A (en) * | 1983-06-20 | 1985-07-16 | Branson Ultrasonics Corporation | Ultrasonic welding apparatus |
| CN101323429A (en) * | 2008-07-18 | 2008-12-17 | 清华大学 | Method for encapsulating microstructure device by means of ultrasonic effect |
-
2010
- 2010-01-21 CN CN2010100334061A patent/CN101774278B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529473A (en) * | 1983-06-20 | 1985-07-16 | Branson Ultrasonics Corporation | Ultrasonic welding apparatus |
| CN101323429A (en) * | 2008-07-18 | 2008-12-17 | 清华大学 | Method for encapsulating microstructure device by means of ultrasonic effect |
Non-Patent Citations (1)
| Title |
|---|
| 王乐积等.塑料制件的超声波焊接技术.《工程塑料应用》.1993,第21卷(第4期),30-33. * |
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| CN101774278A (en) | 2010-07-14 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IP01 | Partial invalidation of patent right |
Commission number: 4W101602 Conclusion of examination: Declare a No. 201010033406.1 utility model patent claims 2 and 3 rights cited in claim 2 of the technical scheme is invalid in claim 1, and right 3 references claim based on the 1 to continue to maintain the validity of the patents requirements. Decision date of declaring invalidation: 20130204 Decision number of declaring invalidation: 19987 Denomination of invention: Method for welding polyfluortetraethylene membrane by ultrasonic wave on medical appliance Granted publication date: 20120215 Patentee: Shijiazhuang Nuolida Medical Instrument Co.,Ltd. |