CN106938525A - A kind of preparation method of the bourdon tube with FEP coatings - Google Patents
A kind of preparation method of the bourdon tube with FEP coatings Download PDFInfo
- Publication number
- CN106938525A CN106938525A CN201710295090.5A CN201710295090A CN106938525A CN 106938525 A CN106938525 A CN 106938525A CN 201710295090 A CN201710295090 A CN 201710295090A CN 106938525 A CN106938525 A CN 106938525A
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- CN
- China
- Prior art keywords
- fep
- bourdon tube
- coatings
- die head
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/04—Endoscopic instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/06—Biopsy forceps, e.g. with cup-shaped jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/151—Coating hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biodiversity & Conservation Biology (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to minimally invasive medical procedures bourdon tube technical field, a kind of preparation method of the bourdon tube with FEP coatings, FEP master batches are added into extruder, extruded at die head, and contacted with from the bourdon tube of die head pass-out, effect through traction is moved ahead, and the bourdon tube with FEP coatings is formed after natural cooling, and the material that wherein screw rod of extruder is promoted is identical with the die orifice load of die head.Coating technique is simple in the application, low cost, efficiency high, and spring pipe surface is smooth, good hand touch, and resistance is small during insertion, not the pincers road of easy damaged Gastrointestinal Endoscopes, and smooth surface can mitigate the scraping to patient's gastrointestinal wall, so as to reduce the discomfort during corrective surgery.And zebra stripes can be printed in FEP superficies, visibility when improving insertion.The application has the bourdon tube of FEP coatings neither too hard, nor too soft, there is certain intensity and ductility, and FEP coating insulations effect is good, can effectively prevent high-voltage breakdown.
Description
Technical field
The invention belongs to minimally invasive medical procedures bourdon tube technical field, more particularly to a kind of spring with FEP coatings
The preparation method of pipe.
Background technology
Biopsy forceps is that endoscopy takes the indispensable instrument of Pathologic specimen to be mainly used in stomach under clinical endoscopy, intestines, wing
The living tissues such as Guang, bronchus are sampled, and the foundation that science is provided for medical diagnosis on disease is chemically examined by pathology.Biopsy forceps requirement uses material
Human body is had no toxic side effect, spring hose surface is smooth, not easy damaged pliers path hole of endoscope, and, naked pipe spring strong by property
Pipe surface smoothness is inadequate, easy damaged pliers path hole of endoscope, and due to there is gap between naked pipe bourdon tube silk material, uses process
In be easily accessible dirt, be not easily cleaned, easily cause the cross-infection between patient, it is impossible to reuse, so as to cause material
The problems such as waste.
Coagulation electric current can be passed to by hot biopsy forceps after sampling and can reach definite effective hemostasis purpose, voltage is passed through
Up to 5000V voltages, it is therefore desirable to which the covering on spring hose surface has good insulating properties.At present it is used as frequently with PTFE
Clad material, its usual cladding process is that yellow PTFE thermoplastic tubes are set on bourdon tube, then shrinks it thermoplastic tube thermoplastic
It is coated on bourdon tube, its complex process cost is higher.
The content of the invention
To solve the defect for traditional cladding process complexity that prior art is present, present invention offer is a kind of to have FFEP coatings
Bourdon tube.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of bourdon tube with FEP coatings
Preparation method, extruder is added by FEP master batches, is extruded at die head, and is contacted with from the bourdon tube of die head pass-out, through traction
Effect is moved ahead, and the bourdon tube with FEP coatings is formed after natural cooling, material and the mould of die head that wherein the screw rod of extruder is promoted
Mouth load is identical.
Further, each section of temperature setting of described extruder be respectively 310,330 DEG C, 360 DEG C, 380 DEG C and 375 DEG C.
Preferably, described extruder extruded velocity is 150m/min, the hauling speed is 600m/min.
Preferably, after the die head extrusion of the described extruded machine of FEP master batches at 25~35mm in front of die head and institute
State bourdon tube contact.
Further, described FEP master batches are the FEP that Daikin is produced.
Preferably, be 3~5mm by the FEP extruded in extruder die orifice thickness, the bourdon tube with FEP coatings
FEP coating layer thicknesses are 9-25.Common biopsy forceps need not be passed through high-tension current therefore not need FEP coatings to have larger
Thickness, hot biopsy forceps are needed with 5000V high pressures, it is necessary to which larger thickness reaches the effect of good insulation.
Beneficial effect：Coating technique is simple in the application, low cost, efficiency high, and spring pipe surface is smooth, good hand touch, inserts
Fashionable resistance is small, not the pincers road of easy damaged Gastrointestinal Endoscopes, and surface simultaneously, smooth can mitigate the scraping to patient's gastrointestinal wall, from
And reduce the discomfort during corrective surgery.And zebra stripes can be printed in FEP superficies, visibility when improving insertion,
It is easy to medical personnel to operate.
The application has the spring pipe surface of FEP coatings smooth, neither too hard, nor too soft, there is certain intensity and ductility, in doctor
In raw operating process, it both can guarantee that insertion process was difficult bending, while can also facilitate bourdon tube to enter after human body, bourdon tube can
The real-time bending with the change in endoscope channel direction, when pincers road recovers straight state, bourdon tube recovers automatically.FEP is applied
Layer insulation effect is good, can effectively prevent high-voltage breakdown.In addition, dirt will not enter inside bourdon tube, easy to clean can be repeated
Use, zebra stripes can also be printed in FEP coating surfaces, visibility when improving insertion is easy to medical personnel to operate.
Embodiment
Embodiment 1
The FEP master batches that Daikin is produced are by screw extruder melting extrusion, and each section of temperature setting of extruder is 310
DEG C, 330 DEG C, 360 DEG C, 380 DEG C and 375 DEG C, the die orifice of the die head of the extruded machine of material extrusion should ensure that screw rod is promoted during extrusion
Material it is identical with the load of die head die orifice, reach the effect of gravity flow, and with the bourdon tube by the plug center pass-out in die head
Contact, and the stretching and drawing under tractive force effect, wherein the material extruded is contacted with bourdon tube at the 30mm of die head front portion, extrusion
Material thickness be 3mm, and tractive force effect under progressively stretching be coated on outside bourdon tube, the extruded velocity of material is
150m/min, hauling speed is 600m/min, naturally cools to room temperature in traction drawing process and winds, final obtained tool
The FEP coating layer thicknesses for having the bourdon tube of FEP coatings are 9.
Embodiment 2
The FEP master batches that Daikin is produced are by screw extruder melting extrusion, and each section of temperature setting of extruder is 310
DEG C, 330 DEG C, 360 DEG C, 380 DEG C and 375 DEG C, the die orifice of the die head of the extruded machine of material extrusion should ensure that screw rod is promoted during extrusion
Material it is identical with the load of die head die orifice, reach the effect of gravity flow, and with the bourdon tube by the plug center pass-out in die head
Contact, and the stretching and drawing under tractive force effect, wherein the material extruded is contacted with bourdon tube at the 25mm of die head front portion, extrusion
Material thickness be 4mm, and tractive force effect under progressively stretching be coated on outside bourdon tube, the extruded velocity of material is
150m/min, hauling speed is 600m/min, naturally cools to room temperature in traction drawing process and winds, final obtained tool
The FEP coating layer thicknesses for having the bourdon tube of FEP coatings are 15.
Embodiment 3
The FEP master batches that Daikin is produced are by screw extruder melting extrusion, and each section of temperature setting of extruder is 310
DEG C, 330 DEG C, 360 DEG C, 380 DEG C and 375 DEG C, the die orifice of the die head of the extruded machine of material extrusion should ensure that screw rod is promoted during extrusion
Material it is identical with the load of die head die orifice, reach the effect of gravity flow, and with the bourdon tube by the plug center pass-out in die head
Contact, and the stretching and drawing under tractive force effect, wherein the material extruded is contacted with bourdon tube at the 30mm of die head front portion, extrusion
Material thickness be 5mm, and tractive force effect under progressively stretching be coated on outside bourdon tube, the extruded velocity of material is
150m/min, hauling speed is 600m/min, naturally cools to room temperature in traction drawing process and winds, final obtained tool
The FEP coating layer thicknesses for having the bourdon tube of FEP coatings are 25.The FEP coatings of 25 thickness, which can effectively ensure that, is connecting 5000V
It is not breakdown during high pressure.
Claims (6)
1. a kind of preparation method of the bourdon tube with FEP coatings, it is characterised in that：FEP master batches are added into extruder, from die head
Place's extrusion, and contacted with from the bourdon tube of die head pass-out, the effect through traction moves ahead, and being formed after natural cooling has FEP coatings
Bourdon tube, wherein extruder screw rod promote material it is identical with the die orifice load of die head.
2. the preparation method of the bourdon tube according to claim 1 with FEP coatings, it is characterised in that：Described extrusion
Each section of temperature setting of machine is respectively 310,330 DEG C, 360 DEG C, 380 DEG C and 375 DEG C.
3. the preparation method of the bourdon tube according to claim 1 or 2 with FEP coatings, it is characterised in that：Described squeezes
Go out machine extruded velocity for 150m/min, the hauling speed is 600m/min.
4. the preparation method of the bourdon tube according to claim 1 with FEP coatings, it is characterised in that：Described FEP is female
Contacted after the die head extrusion of the extruded machine of grain at 25~35mm in front of die head with the bourdon tube.
5. the preparation method of the bourdon tube according to claim 1 with FEP coatings, it is characterised in that：Described FEP is female
The FEP that grain produces for Daikin.
6. the preparation method of the bourdon tube according to claim 1 with FEP coatings, it is characterised in that：By extruder die
The FEP extruded in mouthful thickness is 3~5mm, and the FEP coating layer thicknesses of the bourdon tube with FEP coatings are 9-25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295090.5A CN106938525A (en) | 2017-04-28 | 2017-04-28 | A kind of preparation method of the bourdon tube with FEP coatings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295090.5A CN106938525A (en) | 2017-04-28 | 2017-04-28 | A kind of preparation method of the bourdon tube with FEP coatings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106938525A true CN106938525A (en) | 2017-07-11 |
Family
ID=59463350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710295090.5A Pending CN106938525A (en) | 2017-04-28 | 2017-04-28 | A kind of preparation method of the bourdon tube with FEP coatings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106938525A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113601930A (en) * | 2021-08-05 | 2021-11-05 | 宁波沥高复合材料有限公司 | FEP high-temperature-resistant isolating membrane and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101040797A (en) * | 2007-01-18 | 2007-09-26 | 东莞科威医疗器械有限公司 | Two-step flexible top end dilater and the method for preparing the same |
| CN101164762A (en) * | 2007-09-20 | 2008-04-23 | 上海市塑料研究所 | Method for preparing special high precision PFA sleeve film |
| CN201324234Y (en) * | 2008-12-15 | 2009-10-14 | 金卫忠 | Enteroscope flexible pipe |
| CN204820273U (en) * | 2015-07-31 | 2015-12-02 | 巴拉斯塑胶（苏州）有限公司 | Periosteum material feeding unit of spring pipe |
| CN205238505U (en) * | 2015-11-23 | 2016-05-18 | 广东百合医疗科技股份有限公司 | Loach seal wire tectorial membrane processing equipment |
-
2017
- 2017-04-28 CN CN201710295090.5A patent/CN106938525A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101040797A (en) * | 2007-01-18 | 2007-09-26 | 东莞科威医疗器械有限公司 | Two-step flexible top end dilater and the method for preparing the same |
| CN101164762A (en) * | 2007-09-20 | 2008-04-23 | 上海市塑料研究所 | Method for preparing special high precision PFA sleeve film |
| CN201324234Y (en) * | 2008-12-15 | 2009-10-14 | 金卫忠 | Enteroscope flexible pipe |
| CN204820273U (en) * | 2015-07-31 | 2015-12-02 | 巴拉斯塑胶（苏州）有限公司 | Periosteum material feeding unit of spring pipe |
| CN205238505U (en) * | 2015-11-23 | 2016-05-18 | 广东百合医疗科技股份有限公司 | Loach seal wire tectorial membrane processing equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113601930A (en) * | 2021-08-05 | 2021-11-05 | 宁波沥高复合材料有限公司 | FEP high-temperature-resistant isolating membrane and preparation method and application thereof |
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Application publication date: 20170711 |