CN203315446U

CN203315446U - Corrugated tube type telescopic protection remaining needle

Info

Publication number: CN203315446U
Application number: CN201320190304XU
Authority: CN
Inventors: 陈永曦
Original assignee: Fuzhou Bestway Med-Macromolecule Corp
Current assignee: Fuzhou Bestway Med-Macromolecule Corp
Priority date: 2013-04-16
Filing date: 2013-04-16
Publication date: 2013-12-04
Anticipated expiration: 2023-04-16

Abstract

The utility model relates to a remaining needle, in particular to a corrugated tube type telescopic protection remaining needle. The corrugated tube type telescopic protection remaining needle is characterized in that a circular sleeve A is glidingly nested into a core cavity of an operating handle; the tail end of a corrugated tube is fixedly connected with the circular sleeve A; and a stop structure for preventing the circular sleeve A from slipping off the core cavity is arranged at the front end of the core cavity of the operating handle, and a section inserted into the core cavity of the operating handle is arranged at the rear section of a connecting plug. The corrugated tube type telescopic protection remaining needle has the advantages that two ends of an accommodating sleeve component can slide in the connecting plug and the core cavity of the operating handle during the use and pulling process, the space of the connecting plug and the space of the core cavity of the operating handle are sufficiently utilized, and the length of the accommodating sleeve component can be shortened substantially, so that during assembly, the accommodating sleeve component can be compressed and folded to be quite short; the two ends can also be propped against the bottom surfaces of the connecting plug and the cavity of the operating handle, thus, the length of the whole remaining needle can be quite short after assembly, and the puncture operation is performed very conveniently; and the integrated rigidity is good, and the operation is facilitated.

Description

The flexible protection of bellows-type remaining needle

Technical field

This utility model relates to a kind of remaining needle, particularly the flexible protection of a kind of bellows-type remaining needle.

Background technology

In prior art, as shown in Figure 1, it takes in grip assembly 2 by conduit tube component 1, needle tubing assembly 3 and needle tubing and forms a kind of flexible protection remaining needle.Wherein needle tubing is taken in grip assembly 2 and is comprised of connection plug 21, telescopic corrugated flexible hose 22 and operating grip 23, and corrugated flexible hose 22 1 ends are fixed in connection plug 21, and the other end is fixed in operating grip 23.Remaining needle under the puncture state, corrugated flexible hose is in contraction state, now between connection plug and handle, only have the corrugated flexible hose of simple pressured contracting to be connected, and the corrugated flexible hose periphery again not harder overcoat protect lining, between conduit tube component, connection plug and operating grip, be soft be connected and this soft connection is positioned at again the middle part of remaining needle like this, cause the remaining needle integral rigidity poor, while using operation, whole pin play pendulum, the needle tubing assembly rocks, accurately the localised puncture needle point, make puncture failure.Simultaneously this structure also causes needle tubing to take in grip assembly and whole oversize pin, and not only structure is compact but also operation is inconvenient.

The utility model content

The purpose of this utility model is to overcome weak point of the prior art, and provide, a kind of overall structure rigidity is better, the firm needle tubing simultaneously of operation is taken in the flexible remaining needle of protecting of the shorter bellows-type of grip assembly.

The purpose of this utility model realizes by following approach.

The flexible protection of bellows-type remaining needle, comprise conduit tube component, needle tubing assembly and needle tubing are taken in grip assembly, wherein needle tubing is taken in grip assembly by connection plug, operating grip and the corrugated flexible hose be connected across between them form, the connection plug front end is connected with the conduit tube component sleeve, the needle tubing seat is plugged in the core chamber of operating grip, it forms main points and is: a kind of ring set A sliding sleeve is arranged in the core chamber of operating grip, corrugated flexible hose tail end and this ring set A are affixed, operating grip core chamber front end is provided with and prevents that ring set A slippage from going out stopping into structure of its core chamber, the connection plug back segment has the paragraph that sleeve enters operating grip core chamber, through ring set A, be with corrugated flexible hose slippage backward, needle stand is connected with ring set A inner chamber and corrugated flexible hose inner chamber sleeve, the connection plug back segment is connected with operating grip core chamber sleeve.

Like this, remaining needle under the puncture state, not only there is corrugated flexible hose to connect connection plug and operating grip, more there is connection plug to be connected with the direct sleeve of operating grip, thereby making wholely has good rigidity to needle set, make puncture procedure firm, and corrugated flexible hose containing packing operating grip into again so that needle tubing take in grip assembly and shorten, handled easily further in compact conformation.

After puncture, conduit tube component pulls back operating grip relatively, ring set A elongates slowly to front slide and corrugated flexible hose, touch and corrugated flexible hose enhanced stretch resistance while reaching to a certain degree to stopping into structure of ring set A and operating grip core chamber front end, the connection plug leading section pulls out conduit tube component, and the needle tubing that now punctures has been hidden needle tubing and taken in the grip assembly inner chamber.

The purpose of this utility model can also realize by following approach.

Connection plug has opening core chamber backwards, and a kind of ring set B sliding sleeve is arranged in this core chamber of connection plug, and corrugated flexible hose front end and this ring set B are affixed, and connection plug core chamber is provided with and prevents that ring set B slippage from going out the retaining structure in its core chamber.

Like this, when conduit tube component pulls back operating grip relatively, not only ring set A elongates slowly to front slide, corrugated flexible hose, and ring set B is also simultaneously along with corrugated flexible hose slippage backward.This structure can make more compact structure.

Stop into structure and have inscribed circle, this inscribed circle is less than operating grip core chamber, and described connection plug back segment inscribed circle therewith is connected.

The connection plug periphery is less than this inscribed circle, and under contraction state, the whole length of connection plug is hidden in operating grip core chamber and connection plug tail end head is conflicted by ring set A and operating grip core chamber breech face.

Like this, can allow remaining needle compacter, rigidity is better.

Stopping into structure is a kind of snap ring, and described inscribed circle is the inner circle of snap ring.

Described retaining structure is a kind of snap ring, and its inner circle is greater than the external diameter of corrugated flexible hose.

Outer shroud and internal ring that ring set A is combined by coaxial sleeve form, and the fit face is taper seat, and backwards, the clamping of described corrugated flexible hose tail end is on this fit face for conical large end.

Like this, by the wedging between interior outer cone extruding, by the corrugated flexible hose tail end tightly clamping on this fit face.

Outer shroud and internal ring that ring set B is combined by coaxial sleeve form, and the fit face is taper seat, and forward, the clamping of described corrugated flexible hose front end is on this fit face for conical large end.

In sum, this utility model has following advantage compared to existing technology: take in grip assembly and pull open in process in use, can slide in two ends in connection plug and operating grip die cavity, take full advantage of connection plug and operating grip core cavity space, can make and take in grip assembly length and significantly shorten, like this when assembling, can compress fold into quite short, can conflict again in connection plug and operating grip inner chamber bottom surface in two ends, therefore, assembling is whole afterwards can be quite short remaining needle length, very convenient puncture procedure.Integral rigidity is good, convenient operation.

The accompanying drawing explanation

Fig. 1 is the structural representation of a kind of flexible protection remaining needle under extended state in prior art.

Fig. 2 is the structural representation of the described bellows-type of this utility model most preferred embodiment flexible protection remaining needle under contraction state.

Fig. 3 be the flexible protection of the described bellows-type of this utility model most preferred embodiment remaining needle in needle tubing take in grip assembly and conduit tube component pull under state structural representation;

Figure 4 shows that the structure for amplifying schematic diagram of A section in Fig. 3; Figure 5 shows that the structure for amplifying schematic diagram of B section in Fig. 3.

Fig. 6 is the structural representation of corrugated flexible hose and ring set A in the flexible protection of the described bellows-type of this utility model most preferred embodiment remaining needle, ring set B connection status.

Label declaration:

1 conduit tube component 2 needle tubings are taken in grip assembly 21 connection plug 22 corrugated flexible hoses

23 operating grip 24 ring set A 25 ring set B 26 stop into structure 27 retainings and construct 3 needle tubing assembly 31 needle stands.

The specific embodiment

Most preferred embodiment:

With reference to Fig. 2, Fig. 3, Fig. 4 and Fig. 5; the flexible protection of bellows-type remaining needle; comprise that conduit set 1, needle tubing assembly 3 and needle tubing take in grip assembly 2; wherein needle tubing is taken in grip assembly 2 and is comprised of connection plug 21, operating grip 23 and the corrugated flexible hose 22 that is connected across between them; connection plug 21 front ends are connected with conduit tube component 1 sleeve, and needle stand 31 is plugged in the core chamber of operating grip 23.Ring set A24 sliding sleeve is arranged in the core chamber of operating grip 23, corrugated flexible hose 22 tail ends and this ring set A24 are affixed, operating grip 23 core chamber front ends are provided with and prevent that ring set A24 slippage from going out stopping into structure 26 of its core chamber, stopping into structure 26 is a kind of snap rings, the snap ring inner circle is less than operating grip core chamber, also be less than the external diameter of ring set A, described connection plug 21 peripheries are interior round-formed being connected of snap ring therewith.Connection plug 21 has opening core chamber backwards, ring set B25 sliding sleeve is arranged in connection plug 21 these core chambeies, corrugated flexible hose 22 front ends and this ring set B25 are affixed, connection plug 21 core chambeies are provided with and prevent that ring set B25 slippage from going out the retaining structure 27 in its core chamber, retaining structure 27 is a kind of snap rings, the snap ring inner circle is less than connection plug 21 core chambeies, also is less than the external diameter of ring set B25.Through ring set A24 band, with corrugated flexible hose 22 slippage backward, needle stand 31 is connected with ring set A24 inner chamber and corrugated flexible hose 22 inner chamber sleeves, connection plug 21 is connected with operating grip 23 core chamber sleeves, the ring set B25 front portion to connection plug 21 core chambeies of slippage forward.Like this, under the puncture state, ring set B25 and corrugated flexible hose 22 are hidden in connection plug 21 core chambeies, and connection plug 21 and ring set A24 hide in operating grip 23 core chambeies.And connection plug 21 tail end heads are conflicted by ring set A24 and operating grip core chamber breech face.

With reference to Fig. 6, outer shroud 241 and internal ring 242 that ring set A24 is combined by coaxial sleeve form, and the fit face is taper seat, and backwards, described corrugated flexible hose 22 tail end clampings are on this fit face for conical large end.Equally, outer shroud 251 and internal ring 252 that ring set B25 is combined by coaxial sleeve form, and the fit face is taper seat, and forward, described corrugated flexible hose 22 front end clampings are on this fit face for conical large end.Like this, by the wedging between interior outer cone extruding, by corrugated flexible hose 22 two ends tightly clamping on this fit face.

It is same as the prior art that the present embodiment is not stated part.

Claims

1. bellows-type is stretched and is protected remaining needle, comprise conduit tube component, needle tubing assembly and needle tubing are taken in grip assembly, wherein needle tubing is taken in grip assembly by connection plug, operating grip and the corrugated flexible hose be connected across between them form, the connection plug front end is connected with the conduit tube component sleeve, the needle tubing seat is plugged in the core chamber of operating grip, it is characterized in that, a kind of ring set A sliding sleeve is arranged in the core chamber of operating grip, corrugated flexible hose tail end and this ring set A are affixed, operating grip core chamber front end is provided with and prevents that ring set A slippage from going out stopping into structure of its core chamber, the connection plug back segment has the paragraph that sleeve enters operating grip core chamber, through ring set A, be with corrugated flexible hose slippage backward, needle stand is connected with ring set A inner chamber and corrugated flexible hose inner chamber sleeve, the connection plug back segment is connected with operating grip core chamber sleeve.

2. bellows-type according to claim 1 is stretched and is protected remaining needle; it is characterized in that; connection plug has opening core chamber backwards; a kind of ring set B sliding sleeve is arranged in this core chamber of connection plug; corrugated flexible hose front end and this ring set B are affixed, and connection plug core chamber is provided with and prevents that ring set B slippage from going out the retaining structure in its core chamber.

3. the flexible protection of bellows-type according to claim 1 remaining needle, is characterized in that, stop into structure and have inscribed circle, this inscribed circle is less than operating grip core chamber, and described connection plug back segment inscribed circle therewith is connected.

4. bellows-type according to claim 3 is stretched and is protected remaining needle; it is characterized in that; the connection plug periphery is less than stops into this inscribed circle of structure; under contraction state, the whole length of connection plug is hidden in operating grip core chamber and connection plug tail end head is conflicted by ring set A and operating grip core chamber breech face.

5. according to claim 1 or the flexible protection of 3 or 4 described bellows-types remaining needle, it is characterized in that, stopping into structure is a kind of snap ring, and described inscribed circle is the inner circle of snap ring.

6. the flexible protection of bellows-type according to claim 2 remaining needle, is characterized in that, described retaining structure is a kind of snap ring, and its inner circle is greater than the external diameter of corrugated flexible hose.

7. bellows-type according to claim 1 is stretched and is protected remaining needle; it is characterized in that; outer shroud and internal ring that ring set A is combined by coaxial sleeve form; the fit face is taper seat; conical large end backwards, described corrugated flexible hose tail end because of the wedging extruding clamping between interior outer cone on this fit face.

8. bellows-type according to claim 2 is stretched and is protected remaining needle; it is characterized in that; outer shroud and internal ring that ring set B is combined by coaxial sleeve form; the fit face is taper seat; conical large end forward, described corrugated flexible hose front end because of the wedging extruding clamping between interior outer cone on this fit face.