CN106393647A - Fixed-diameter sleeve for producing medical catheter - Google Patents
Fixed-diameter sleeve for producing medical catheter Download PDFInfo
- Publication number
- CN106393647A CN106393647A CN201611181228.0A CN201611181228A CN106393647A CN 106393647 A CN106393647 A CN 106393647A CN 201611181228 A CN201611181228 A CN 201611181228A CN 106393647 A CN106393647 A CN 106393647A
- Authority
- CN
- China
- Prior art keywords
- hole
- fixed disk
- rear end
- cover plate
- sizing
- 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
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
- B29C48/903—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies externally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
- B29L2031/7542—Catheters
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention provides a fixed-diameter sleeve for producing a medical catheter. The fixed-diameter sleeve comprises a fixing disc, a cover plate, a front end shaping column, a front end shaping through hole, a front end air groove and a rear end shaping column, wherein a fixing disc through hole is formed in the center of the fixing disc, the cover plate is fixed to the fixing disc, an installing cavity is formed between the cover plate and the fixing disc, the front end shaping column is arranged in the installing cavity and fixed to the fixing disc and the cover plate, the front end shaping through hole is formed in the center of the front end shaping column, the front end air groove is formed in the side wall of the front end shaping through hole, the rear end shaping column and the cover plate are fixed to two sides of the fixing disc respectively, a rear end shaping through hole is formed in the center of the rear end shaping column, a rear end air groove is formed in the side wall of the rear end shaping through hole, and the fixing disc through hole, the front end shaping through hole and the rear end shaping through hole are arranged coaxially. The outer wall of the medical catheter obtained by using the fixed-diameter sleeve for producing the medical catheter is high in smoothness and good in shaping effect, and the production efficiency is high.
Description
Technical field
The present invention relates to production field, the calibration sleeve that more particularly, to a kind of medical catheter produces.
Background technology
With the development of conduit Clinics, medical catheter develops increasingly in clinical application, and demand is continuously increased.With
Society and expanding economy, medical level improve constantly, clinic higher requirement is also constantly proposed to medical catheter, therefore this
It is accomplished by medical catheter to constantly bring forth new ideas to meet the needs of clinic.
Medical catheter has that size is small, complex-shaped, geometric accuracy has high demands, sanitary index is high, biochemical stability is high
The features such as.The production difficulty of therefore precision medical catheter is very big, and conventional process equipment and technique can not meet its production and want
Ask.China's a big chunk precision medical catheter dependence on import at present, therefore exploitation precision medical catheter is for intervention Medical treatment device
The production domesticization of tool is extremely important.Precision medical catheter has extensive market prospect in China, not only can bring
Significantly economic benefit, is conducive to improving national health level simultaneously, brings huge social benefit.And the essence of current China
Exist in the production of close medical catheter and produce the problem that workpiece does not meet production requirement.
Therefore it provides a kind of workpiece that can be used in medical catheter production is technical problem urgently to be resolved hurrily.
Content of the invention
Problem in producing for above-mentioned medical catheter, it is an object of the invention to provide a kind of for medical catheter production
Calibration sleeve.
Technical scheme is as follows：
A kind of calibration sleeve for medical catheter production, it includes
Fixed disk, described fixed disk be provided centrally with fixed disk through hole, the week side of boss of described fixed disk is additionally provided with fixing hole；
Cover plate, described cover plate is fixed on described fixed disk, forms installation cavity between described cover plate and described fixed disk；
Front end sizing post, described front end sizing post is arranged in described installation cavity and is fixed on described fixed disk and cover plate, institute
That states front end sizing post is provided centrally with front end sizing through hole, and the side wall of described front end sizing through hole is provided with front end air
Groove, shape and be provided with air chamber between the lateral wall of post and described cover plate in described front end, described air chamber and described front end air
Groove connects, and is provided with the first gas-tpe fitting communicating with described air chamber on described cover plate；And
Rear end sizing post, described rear end sizing post and described cover plate are separately fixed at the both sides of described fixed disk, and described rear end is fixed
Type post be provided centrally with rear end sizing through hole, described rear end shape through hole side wall on be provided with back air groove；
Wherein said fixed disk through hole, described front end sizing through hole and described rear end sizing through hole are coaxially disposed.
Wherein, described rear end sizing through hole is integrally in the figure of eight.
Wherein, described rear end sizing post includes first paragraph, second segment and the 3rd section along the direction away from described fixed disk,
90 degree of first paragraph back air groove on wherein said first paragraph is staggered, the second segment back air groove on described second segment
120 degree are staggered, and the 3rd section of back air groove 180 degree on described 3rd section is staggered.
Wherein, the length of described first paragraph is more than the length of described second segment and the 3rd section.
Wherein, 90 degree of described front end air groove is staggered.
Wherein, described front end sizing post is additionally provided with cooling duct, described cover plate is provided with logical with described cooling
The water pipe head of road connection.
Wherein, described cooling duct includes the first cooling chamber, communicating passage and the close described fixation of close described cover plate
Second cooling chamber of disk, described first cooling chamber is connected by described communicating passage with described second cooling chamber.
Wherein, described first cooling chamber and described second cooling chamber are circular passage, and described communicating passage is semi-circular
Passage, described front end air groove is arranged on the side wall in the middle of described first cooling chamber and described second cooling chamber.
Wherein, described fixed disk is additionally provided with the second gas-tpe fitting.
Wherein, described front end sizing through hole is manhole, and the internal diameter of described front end sizing through hole is more than described rear end to be determined
The internal diameter of type through hole, the internal diameter of described fixed disk through hole is gradually reduced along from front end the shape direction of post of post to rear end of shaping.
The invention has the beneficial effects as follows：
The outer wall smoothness of the medical catheter that the calibration sleeve producing for medical catheter of the present invention obtains is high, and fixed effect is good,
Production efficiency is high, shapes post by front end and the shape design of post of rear end has reached sizing when medical catheter produces and cooling
Balance is so as to more conform to the Production requirement of medical catheter.
Brief description
Fig. 1 is the main view cross-sectional schematic of the calibration sleeve producing for medical catheter of the present invention；
Fig. 2 is the left view schematic diagram of the calibration sleeve producing for medical catheter of the present invention；
Fig. 3 is that the right side of the calibration sleeve producing for medical catheter of the present invention regards schematic diagram；
Fig. 4 is that the right side of the rear end sizing through hole of the calibration sleeve shown in Fig. 1 regards schematic diagram.
Specific embodiment
In order that the purpose of the calibration sleeve producing for medical catheter of the present invention, technical scheme and advantage are more clear bright
In vain, below in conjunction with concrete drawings and the specific embodiments, the present invention will be described in further detail.
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Mutually combine.
Medical catheter is different from common pvc pipe, and it will be contacted with tissue, blood, body fluid etc., and have is even permanent
Implant.Therefore medical catheter must have excellent organism substitutability, biocompatibility and blood compatibility.It will
Ask smooth surface, nontoxic, tasteless, resistant to the sterilising.Require in addition that medical catheter should have the things such as certain tensile strength and elasticity
Reason mechanical performance.Therefore, lead to preferably adapt to a kind of the medical of sheath of tearing being mainly used in cardiac pacemaker electrodes placement
The production of pipe, inventor designs a kind of new calibration sleeve.
Referring to Fig. 1, the present invention provides a kind of calibration sleeve for medical catheter production, and it includes fixed disk 100, cover plate
200th, front end sizing post 300 and rear end sizing post 400.
As shown in Figure 1 to Figure 3, the entirety of fixed disk 100 shape in disk form, fixed disk 100 be provided centrally with fix
Disk through hole 101, is additionally provided with fixing hole 102 in the week side of boss of fixed disk 100.Fixed disk can be fixed on by sizing by bolt etc.
On machine.Referring to Fig. 2, fixed disk 100 is provided with multiple fixing holes 102, multiple fixing holes 102 are evenly distributed on same circle.
Fixed disk becomes preferably with copper.
Cover plate 200 is fixed on described fixed disk 100, and in the present embodiment, cover plate 200 is by non-removable mode（Example
As welding）It is fixed on fixed disk.As shown in Figure 1 to Figure 3, overall in disk form, its inner hollow of cover plate 200, i.e. cover plate 200
Form installation cavity and described fixed disk 100 between.As shown in figure 1, cover plate 200 includes header board 210 and cover sidewall 220, header board
210 diameter is less than the diameter of fixed disk.Cover plate can also be standby using copper.
Referring to Fig. 1, front end sizing post 300 is arranged in described installation cavity and by non-removable fixed forms such as welding
It is fixed on described fixed disk 100 and cover plate 200.In the present embodiment, front end sizing post profile is cylinder, front end sizing post
Outer wall fit with the inwall of cover plate, be fitted close therebetween.Lead in the front end sizing that is provided centrally with of front end sizing post 300
Hole 310, the side wall of described front end sizing through hole 310 is provided with front end air groove 320, the front end sizing through hole in the present embodiment
A plurality of front end air groove 320 is provided with 310 side wall.Set between the lateral wall of described front end sizing post 300 and described cover plate
It is equipped with air chamber 330, on the lateral wall that post is shaped in front end, is provided with depressed part, sizing post is arranged in cover plate when front end
Afterwards, it is the formation of air chamber between depressed part and cover plate.Described air chamber 330 is connected with described front end air groove 320, and in institute
State and the first gas-tpe fitting 001 being communicated with described air chamber 330 is provided with cover plate 200.Air chamber in the present embodiment is ring
Shape air chamber.
Referring to Fig. 1, rear end sizing post 400 and described cover plate 200 are separately fixed at the both sides of described fixed disk 100, also
It is to say that rear end sizing post and front end sizing post are separately fixed at the both sides of fixed disk, rear end sizing post is also by modes such as welding admittedly
It is scheduled on fixed disk.Likewise, shaping in rear end, post 400 is provided centrally with rear end sizing through hole 410, described rear end sizing through hole
It is provided with back air groove 420 on 410 side wall.
Referring to Fig. 1, described fixed disk through hole 101, described front end sizing through hole 310 and described rear end sizing through hole 410 are same
Axle is arranged.
Calibration sleeve in the present embodiment is mainly used for the external diameter sizing of medical catheter, when the medical catheter of extruder extrusion
After entering calibration sleeve, sequentially enter front end sizing through hole, fixed disk through hole and rear end sizing through hole, during, by the first gas
Pipe joint evacuation, then medical catheter be attracted on the inwall of calibration sleeve, thus the outer wall of medical catheter is carried out sizing and
Cooling.Wherein sizing post in front end is more biased towards in medical catheter is cooled down, and rear end sizing post is more biased towards in medical catheter
Shaped.Certainly, sizing post in front end also plays styling to medical catheter simultaneously.
Preferably, wherein in an embodiment, referring to Fig. 4, it to be in the figure of eight that described rear end sizing through hole 410 is overall.
It is to form otch on the outer wall of tubing that rear end sizing through hole is set to down the figure of eight.
Preferably, wherein in an embodiment, referring to Fig. 1, described rear end sizing post 400 is along away from described fixed disk
Direction include first paragraph, second segment and the 3rd section, on wherein said first paragraph 401 first paragraph back air groove 421 be in 90
Degree is staggered, and the second segment back air groove 422 on described second segment is staggered in 120 degree, on described 3rd section
Three sections of back air grooves 423 are staggered in 180 degree.So setting can reach the purpose of more preferable sizing.Air groove is taken out very
Sky can produce very big vacuum adsorption force, makes the outer wall of medical catheter to be processed be close to the inwall of calibration sleeve to be cooled to
Type, in the present embodiment in first paragraph, the different settings of air groove on second segment and the 3rd section on the one hand can make to be processed
The outer wall of medical catheter be close to and shape on the inwall of calibration sleeve, on the other hand avoid air groove to medical catheter outer wall again
Image, thus reach the purpose improving medical catheter surface flatness.
Further, the length of described first paragraph is more than the length of described second segment and the 3rd section.More excellent, first paragraph,
The length ratio of second segment and the 3rd section is 1.5 ~ 3：1：0.8~1.2.So setting is also for the mesh reaching more preferable sizing
's.
Preferably, wherein in an embodiment, referring to Fig. 1, described front end air groove 320 is staggered in 90 degree.This
Sample setting increases the coefficient of friction of medical catheter and calibration sleeve, and preferably absorption simultaneously will not be right on inwall to make medical catheter
The outer wall of medical catheter produces impact.
Preferably, wherein in an embodiment, referring to Fig. 1, described front end sizing post 300 is additionally provided with cooling duct
340, the water pipe head 002 being connected with described cooling duct is provided with described cover plate 200.Setting cooling duct is for fixed
While type, conduit is cooled down, carry out cooling down indirectly cooling down by post of being shaped in front end in the present embodiment.
More excellent, referring to Fig. 1, described cooling duct 340 includes the first cooling chamber 341 of close described cover plate, connection is led to
Road 342 and the second cooling chamber 343 near described fixed disk, described first cooling chamber 341 and described second cooling chamber 343 pass through
Described communicating passage 342 connects.So setting cooling duct can cool down to whole front end sizing post.Now communicating passage
Communicate with air chamber.
Further, referring to Fig. 1, described first cooling chamber 341 and described second cooling chamber are circular passage, described
Communicating passage 342 is half-donut channels, and the side wall only between described first cooling chamber and described second cooling chamber is provided with
Described front end air groove.As shown in figure 1, the communicating passage in the top half of front end sizing post has run through air groove, and front
The latter half of end sizing post is not provided with communicating passage.So it is disposed to reach the balance of sizing and cooling, it is to avoid pipe
The too fast cooling of material.
Preferably, wherein in an embodiment, referring to Fig. 1, described fixed disk 100 is additionally provided with the second gas-tpe fitting
003.Second gas-tpe fitting and vacuum pump connect, and its effect is that evacuation makes medical catheter adsorb in calibration sleeve inwall.Further
, described front end sizing through hole 310 is manhole, and the internal diameter of described front end sizing through hole 310 is logical more than the sizing of described rear end
The internal diameter in hole 410, the internal diameter of described fixed disk through hole 101 gradually contracts along from front end the shape direction of post of post to rear end of shaping
Little.So design is to preferably guide to medical catheter.The arrival end fillet design of the through hole of front end sizing simultaneously.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claim.
Claims (10)
1. a kind of calibration sleeve for medical catheter production is it is characterised in that include
Fixed disk, described fixed disk be provided centrally with fixed disk through hole, the week side of boss of described fixed disk is additionally provided with fixing hole；
Cover plate, described cover plate is fixed on described fixed disk, forms installation cavity between described cover plate and described fixed disk；
Front end sizing post, described front end sizing post is arranged in described installation cavity and is fixed on described fixed disk and cover plate, institute
That states front end sizing post is provided centrally with front end sizing through hole, and the side wall of described front end sizing through hole is provided with front end air
Groove, shape and be provided with air chamber between the lateral wall of post and described cover plate in described front end, described air chamber and described front end air
Groove connects, and is provided with the first gas-tpe fitting communicating with described air chamber on described cover plate；And
Rear end sizing post, described rear end sizing post and described cover plate are separately fixed at the both sides of described fixed disk, and described rear end is fixed
Type post be provided centrally with rear end sizing through hole, described rear end shape through hole side wall on be provided with back air groove；
Wherein said fixed disk through hole, described front end sizing through hole and described rear end sizing through hole are coaxially disposed.
2. calibration sleeve according to claim 1 is it is characterised in that sizing through hole in described rear end is integrally in the figure of eight.
3. calibration sleeve according to claim 1 is it is characterised in that described rear end sizing post is along away from described fixed disk
Direction includes first paragraph, second segment and the 3rd section, and 90 degree of first paragraph back air groove on wherein said first paragraph is staggered,
120 degree of second segment back air groove on described second segment is staggered, the 3rd section of back air groove 180 on described 3rd section
Degree is staggered.
4. calibration sleeve according to claim 1 is it is characterised in that the length of described first paragraph is more than described second segment and the
Three sections of length.
5. calibration sleeve according to claim 1 is it is characterised in that 90 degree of described front end air groove is staggered.
6. the calibration sleeve according to claim 1 to 5 any one is it is characterised in that also set up on described front end sizing post
There is cooling duct, the water pipe head being connected with described cooling duct is provided with described cover plate.
7. calibration sleeve according to claim 6 is it is characterised in that described cooling duct includes first near described cover plate
Cooling chamber, communicating passage and the second cooling chamber near described fixed disk, described first cooling chamber and described second cooling chamber lead to
Cross described communicating passage connection.
8. calibration sleeve according to claim 6 is it is characterised in that described first cooling chamber and described second cooling chamber are
Circular passage, described communicating passage is half-donut channels, and described front end air groove is arranged on described first cooling chamber and described the
On side wall in the middle of two cooling chambers.
9. calibration sleeve according to claim 1 is it is characterised in that be additionally provided with the second gas-tpe fitting on described fixed disk.
10. calibration sleeve according to claim 1 it is characterised in that described front end sizing through hole be manhole, described before
The internal diameter of end sizing through hole is more than the internal diameter of described rear end sizing through hole, and the internal diameter of described fixed disk through hole is shaped along from front end
Post is gradually reduced to the direction of rear end sizing post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611181228.0A CN106393647A (en) | 2016-12-20 | 2016-12-20 | Fixed-diameter sleeve for producing medical catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611181228.0A CN106393647A (en) | 2016-12-20 | 2016-12-20 | Fixed-diameter sleeve for producing medical catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106393647A true CN106393647A (en) | 2017-02-15 |
Family
ID=58087381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611181228.0A Pending CN106393647A (en) | 2016-12-20 | 2016-12-20 | Fixed-diameter sleeve for producing medical catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106393647A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202623259U (en) * | 2012-07-09 | 2012-12-26 | 广东雄塑科技实业有限公司 | Vacuum calibrating sleeve |
| JP2013082222A (en) * | 2011-09-29 | 2013-05-09 | Sekisui Chem Co Ltd | Forming mold |
| CN204076793U (en) * | 2014-08-11 | 2015-01-07 | 苏州杰威尔精密机械有限公司 | Body diameter-setting equipment |
| CN204547044U (en) * | 2015-04-15 | 2015-08-12 | 倪传华 | A kind of pipe with small pipe diameter diameter-setting equipment |
| CN205364499U (en) * | 2015-12-12 | 2016-07-06 | 沧州明珠塑料股份有限公司 | Novel wear -resisting sizing cover of PE tubular product |
| CN206416506U (en) * | 2016-12-20 | 2017-08-18 | 福路明精密管材（北京）有限公司 | A kind of calibration sleeve produced for medical catheter |
-
2016
- 2016-12-20 CN CN201611181228.0A patent/CN106393647A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013082222A (en) * | 2011-09-29 | 2013-05-09 | Sekisui Chem Co Ltd | Forming mold |
| CN202623259U (en) * | 2012-07-09 | 2012-12-26 | 广东雄塑科技实业有限公司 | Vacuum calibrating sleeve |
| CN204076793U (en) * | 2014-08-11 | 2015-01-07 | 苏州杰威尔精密机械有限公司 | Body diameter-setting equipment |
| CN204547044U (en) * | 2015-04-15 | 2015-08-12 | 倪传华 | A kind of pipe with small pipe diameter diameter-setting equipment |
| CN205364499U (en) * | 2015-12-12 | 2016-07-06 | 沧州明珠塑料股份有限公司 | Novel wear -resisting sizing cover of PE tubular product |
| CN206416506U (en) * | 2016-12-20 | 2017-08-18 | 福路明精密管材（北京）有限公司 | A kind of calibration sleeve produced for medical catheter |
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Application publication date: 20170215 |
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