CN205905414U

CN205905414U - Simple and easy medical catheter reducing device

Info

Publication number: CN205905414U
Application number: CN201620794301.0U
Authority: CN
Inventors: 张耀华; 费永欢; 吴杰
Original assignee: SHANGHAI ECO PRECISION EXTRUSION TECHNOLOGY Co Ltd
Current assignee: SHANGHAI ECO PRECISION EXTRUSION TECHNOLOGY Co Ltd
Priority date: 2016-07-27
Filing date: 2016-07-27
Publication date: 2017-01-25
Anticipated expiration: 2026-07-27

Abstract

The utility model discloses a simple and easy medical catheter reducing device belongs to the medical instrument field. It includes mould, temperature control device, center pillar and base, the mould includes the mould body, offers reducing cast chamber, hole, a threaded holes and second screw hole on the mould body, temperature regulating device includes temperature control box, heating rod and thermocouple, be provided with first step hole on the base, the center pillar passes through the double -screw bolt to be fixed on the base, the mould is fixed on the center pillar, in the heating rod embedding die heating hole, the thermocouple inserts in the first screw hole. The utility model discloses a simple and easy medical catheter reducing device, simple structure, low cost, size precision is high, but adopts detachable structure, can be on same mould the reducing pipe of the multiple different specifications of shaping.

Description

A kind of simple medical conduit diameter changing device

Technical field

The utility model is related to medical catheter apparatus, particularly relates to small size conduit diameter changing device, belongs to medicine equipment neck Domain.

Background technology

Medical reducer pipe is mainly used in intervention class medicine equipment, such as peripheral vascular stents conveyer, and intravascular stent is straight Footpath is smaller, and stent delivery catheter is generally very thin, and intensity is very low, and the power that pushes is too small, or even can cause because of delivery conduit deformation Security incident, is therefore processed frequently with front end constriction.

Reducer pipe manufacturing process is to pass through to control hauling speed in conduit extrusion or control extruder screw at present Rotating speed changes conduit internal-and external diameter, and the reducer pipe internal-and external diameter prepared by this method changes simultaneously, and neck down portions are very long, The requirement of the medical devices call reducer pipe such as conveyer mutation can not be met, used time reducing pipe extrusion plant price comparison is high, raw The product cycle is long, and production cost is higher, causes that the R＆D cycle of medicine equipment is long, and R ＆ D Cost is higher, simultaneously The extruder Product Precision of this reducer pipe is relatively low, and stability difference is it is impossible to meet the demand of medical precision precise product.

Utility model content

In view of this, the utility model provides a kind of simple medical conduit diameter changing device, and structure is simple, with low cost, High precision, using Demountable, can be molded multiple various sizes of reducer pipes on same mould.

The utility model is by following technological means solution above-mentioned technical problem:

A kind of simple medical conduit diameter changing device of the present utility model, it includes mould, attemperating unit, center pillar and base, Described mould includes die ontology, the reducing tubular cavity being opened on die ontology, hole, the first screwed hole and the second screwed hole, Described temperature regulating device includes temperature control box, heating rod and thermocouple, and described base is provided with first step hole, and described center pillar passes through Stud is fixed on base, and described mould is fixed on center pillar, and described heating rod inserts in the hole, and described thermocouple inserts the first spiral shell In pit.

Described mould is quickly replacing mould, and described reducing tubular cavity includes reducer pipe import flat segments, conical surface section and change Footpath pipe outlet flat segments.

Described center pillar is fixedly connected with base by first step hole.

Described second screwed hole is used for fixing mould.

Described heating rod and thermocouple are connected with mould, and heating rod and thermocouple are connected on attemperating unit by wire.

The beneficial effects of the utility model: a kind of simple medical conduit diameter changing device of the present utility model, structure is simple, one-tenth This cheap, high precision, using Demountable, can be molded multiple various sizes of reducer pipes on same mould.

Brief description

With reference to the accompanying drawings and examples the utility model is further described.

Fig. 1 is the utility model axonometric drawing；

Fig. 2 is the utility model front view；

Fig. 3 is the utility model top view；

Fig. 4 is mould axonometric drawing；

Fig. 5 is mould half sectional view；

Fig. 6 passes through reducing tubular cavity schematic diagram for Teflon seal wire.

Wherein: 1, mould, 2, attemperating unit, 3, center pillar, 4, base, 5, die ontology, 6, reducing tubular cavity, 7, hole, 8, First screwed hole, the 9, second screwed hole, 10, temperature control box, 11, heating rod, 12, thermocouple, 13, first step hole, 14, stud, 15th, reducer pipe import flat segments, 16, conical surface section, 17, reducer pipe outlet flat segments.

Specific embodiment

Below with reference to accompanying drawing, the utility model is described in detail, as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6: A kind of simple medical conduit diameter changing device of the present embodiment, it includes mould 1, attemperating unit 2, center pillar 3 and base 4, described mould Tool 1 includes die ontology 5, the reducing tubular cavity 6 being opened on die ontology 5, hole 7, the first screwed hole 8 and the second screwed hole 9, Described temperature regulating device 2 includes temperature control box 10, heating rod 11 and thermocouple 12, and described base 4 is provided with first step hole 13, institute State center pillar 3 to be fixed on base 4 by stud 14, described mould 1 is fixed on center pillar 3, in described heating rod 11 patchhole 7, Described thermocouple 12 inserts in the first screwed hole 8.

Described mould 1 is quickly replacing mould, and described reducing tubular cavity 6 includes reducer pipe import flat segments 15, conical surface section 16 and reducer pipe outlet flat segments 17.

Described center pillar 3 is fixedly connected with base 4 by first step hole 13.

Described second screwed hole 9 is used for fixing mould 1.

Described heating rod 11 and thermocouple 12 are connected with mould 1, and heating rod 11 and thermocouple 12 are connected to temperature control by wire On device 2.

Reducing tubular cavity 6 is machined with mould 1, and has the counterbore for installing thermocouple 12 and heating rod 11 or screw thread Hole and the second screwed hole 9 of the first screwed hole 8 for fixing mould 1 and fixing heating rod 11.

Mould reducing tubular cavity 6 structure is as shown in fig. 6, be mainly made up of three part-structures: reducer pipe import flat segments 15, Conical surface section 16 and reducer pipe outlet flat segments 17, for preventing mould from pipe is caused damage, importing and exporting all has rounding, wherein becomes Footpath pipe import flat segments 15 internal diameter is more than treats reducer pipe external diameter it is ensured that pipe can smoothly enter mould 1 preheats, conical surface section 16 shape Shape is to be consistent with pipe changeover portion shape, and outlet flat segments internal diameter is equal to reducing rear tube external diameter, for some shrinkage ratios More serious material can suitably amplify.

The insertion of ptfe seal wire treats that reducer pipe passes through mould 1 as shown in fig. 6, passing through external force traction seal wire and treating reducer pipe synchronously Move it is possible to prepare reducer pipe.

Concrete operation step

(1) open attemperating unit 2, design temperature is to slightly below material melt temp, but is higher than heat distortion temperature it is ensured that managing Son can reducing again can controllable deforming, be such as difficult to pull-out reducing tubular cavity 6, it is possible to decrease forming temperature, such as easily break very much, can drop Low temperature improves melt strength；

(2) will treat that reducer pipe front end is cut carefully, and enable through the reducing tubular cavity 6 becoming mould 1, and have long enough Spend for vice or other fixture clamping；

(3) Teflon seal wire passes through and treats reducer pipe, and wherein seal wire diameter is equal with the internal diameter after reducer pipe reducing, and seal wire is slightly Pass mould；

(4) conduit being installed with seal wire is passed through the reducing tubular cavity 6 of mould 1, clamp seal wire and conduit with vice simultaneously Slowly at the uniform velocity stretch, obtain reducer pipe.In order to obtain, inside/outside diameter size is stable, the reasonable reducer pipe in surface need to stretch uniformly, can An external guide rail, on guide rail one termination cylinder, by air pressure restrained stretching uniform and stable it is also possible to connect a screw mandrel, on screw mandrel It is connected with fixture, by screw mandrel restrained stretching speed.

Carry out detachable assembled using three parts, mould is simple and reliable, processing is quick and convenient, can be fast according to design idea Speed more mold exchange, can be molded multiple various sizes of reducer pipes on same mould, and Product Precision is high, reduce the R＆D cycle, carry High efficiency, shortens life cycle of the product and reduces R ＆ D Cost.

Finally illustrate, above example only in order to the technical solution of the utility model to be described and unrestricted, although ginseng According to preferred embodiment, the utility model is described in detail, it will be understood by those within the art that, can be to this The technical scheme of utility model is modified or equivalent, the objective without deviating from technical solutions of the utility model and model Enclose, it all should be covered in the middle of right of the present utility model.

Claims

1. a kind of simple medical conduit diameter changing device it is characterised in that: include mould (1), attemperating unit (2), center pillar (3) and bottom Seat (4), described mould (1) include die ontology (5), the reducing tubular cavity (6) being opened on die ontology (5), hole (7), the One screwed hole (8) and the second screwed hole (9), described attemperating unit (2) includes temperature control box (10), heating rod (11) and thermocouple (12), described base (4) is provided with first step hole (13), described center pillar (3) is fixed on base (4) by stud (14) On, described mould (1) is fixed on center pillar (3), in described heating rod (11) patchhole (7), described thermocouple (12) insertion the In one screwed hole (8).

2. a kind of simple medical conduit diameter changing device according to claim 1 it is characterised in that: described mould (1) is fast Speed more mold exchange, it is flat that described reducing tubular cavity (6) includes reducer pipe import flat segments (15), conical surface section (16) and reducer pipe outlet Straight section (17).

3. a kind of simple medical conduit diameter changing device according to claim 1 it is characterised in that: described center pillar (3) is passed through First step hole (13) is fixedly connected with base (4).

4. a kind of simple medical conduit diameter changing device according to claim 1 it is characterised in that: described second screwed hole (9) it is used for fixing mould (1).

5. a kind of simple medical conduit diameter changing device according to claim 1 it is characterised in that: described heating rod (11) and Thermocouple (12) is connected with mould (1), and heating rod (11) and thermocouple (12) are connected on attemperating unit (2) by wire.