CN208389103U - A kind of remaining needle of counterflow-preventing - Google Patents
A kind of remaining needle of counterflow-preventing Download PDFInfo
- Publication number
- CN208389103U CN208389103U CN201721121231.3U CN201721121231U CN208389103U CN 208389103 U CN208389103 U CN 208389103U CN 201721121231 U CN201721121231 U CN 201721121231U CN 208389103 U CN208389103 U CN 208389103U
- Authority
- CN
- China
- Prior art keywords
- counterflow
- preventing
- fastener
- needle stand
- needle
- 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.)
- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to the technical fields of medical infusion equipment, refer in particular to a kind of remaining needle of counterflow-preventing, it includes outer needle tubing, outer needle stand, inner needle tube and interior needle stand, outer needle stand is fixed on the rear portion of outer needle tubing, inner needle tube is fixed on interior needle stand, and the inner surface of interior needle stand is provided with the fixed body for positioning inner needle tube；It is provided with the counterflow-preventing part for counterflow-preventing in interior needle stand, counterflow-preventing part includes mounting portion and counterflow-preventing portion, and counterflow-preventing portion offers cross and cracks valve port；It is provided with the positioning column for location and installation portion on the side of supporting table, the location hole for cooperating with positioning column is provided on mounting portion；The fastener for blocking mounting portion and the accommodating cavity for accommodating fastener are provided in interior needle stand, the bottom of accommodating cavity is fixedly connected with spring, and one end of spring is connect with fastener, and mounting portion is provided with the card slot for being clamped with fastener；Movable rod is connected on fastener, one end of movable rod is connect with fastener, and the other end of movable rod is connected with pull ring.
Description
Technical field
The utility model relates to the technical fields of medical infusion equipment, refer in particular to a kind of remaining needle of counterflow-preventing.
Background technique
Remaining needle includes interior needle and outer needle, and interior needle penetrates through the inside of outer needle, and then blood vessel to enter blood vessel with outer needle
Afterwards, outer needle stays in intravascular, and interior needle is extracted；Valve for preventing reverse-flow is installed usually at outer needle about center, but due to its knot of valve for preventing reverse-flow
Structure is complicated, inconvenient to use, and can significantly increase the production cost of remaining needle, and its installation is inconvenient.
Utility model content
The utility model provides a kind of remaining needle of counterflow-preventing for problem of the prior art, and counterflow-preventing part structure is simple,
Simple to install, and blood back flow can be prevented, it is easy to use, reliable.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution:
A kind of remaining needle of counterflow-preventing provided by the utility model includes outer needle tubing, outer needle stand, inner needle tube and interior needle
Seat, the outer needle stand are fixed on the rear portion of outer needle tubing, and the inner needle tube is fixed on interior needle stand, and the inner surface of the interior needle stand is set
It is equipped with the fixed body for positioning inner needle tube；The counterflow-preventing part for counterflow-preventing, the counterflow-preventing are provided in the interior needle stand
Part includes mounting portion and counterflow-preventing portion, and the counterflow-preventing portion offers cross and cracks valve port；The bottom of the interior needle stand is set
It is equipped with the supporting table for being used to support counterflow-preventing part, the positioning column for location and installation portion is provided on the side of the supporting table,
The location hole for cooperating with positioning column is provided on the mounting portion；It is provided in the interior needle stand for blocking mounting portion
Fastener and accommodating cavity for accommodating fastener, the bottom of the accommodating cavity is fixedly connected with spring, one end of the spring and card
Part connection, the mounting portion are provided with the card slot for being clamped with fastener；Movable rod, the movable rod are connected on the fastener
One end connect with fastener, the other end of the movable rod is arranged in the outer needle stand of interior needle stand, and the other end of the movable rod connects
It is connected to pull ring.
Wherein, the top of the positioning column is provided with elastic sphere, is provided at the top of the location hole for accommodating bullet
The spherical cavity of property sphere.
Wherein, the mounting portion is provided with buffer layer.
Wherein, one row's formula of top of the buffer layer is provided with several the first pillars, the bottom row of the buffer layer
Formula is provided with several the second pillars, and first pillar and the second pillar are staggered, the setting of second pillar interval, phase
Elastic component is provided between adjacent second pillar.
The utility model has the beneficial effects that
A kind of remaining needle of counterflow-preventing provided by the utility model, the simple structure and reasonable design of counterflow-preventing part, relatively
For traditional valve for preventing reverse-flow, it is possible to reduce counterflow-preventing part may be implemented by the structure of interior needle stand in production cost, counterflow-preventing part
Simple, accurate installation, guarantee that counterflow-preventing part is not easy to loosen, guarantee its safety in utilization, while can have by counterflow-preventing part
Effect prevents blood back flow, easy to use, safe and reliable.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the remaining needle of counterflow-preventing of the utility model.
Fig. 2 is the structural schematic diagram of the counterflow-preventing part of the utility model.
Fig. 3 is the structure sectional view of the counterflow-preventing part of the utility model.
Fig. 4 be the utility model supporting table, positioning column, fastener, pull ring, movable rod, spring, interior needle stand and outer needle stand it
Between the structural schematic diagram that cooperates.
Fig. 5 is the enlarged drawing in Fig. 4 at A.
Fig. 6 is the structural schematic diagram of the buffer layer of the utility model.
Include: in appended drawing reference of the Fig. 1 into Fig. 6
1-outer needle tubing 2-outer 3-inner needle tube of needle stand
4-interior 5-fixed body of needle stand 6-counterflow-preventing parts
10-11-counterflow-preventing of mounting portion portion, 12-cross crack valve port
13-supporting table 14-positioning column, 15-location holes
16-fastener 17-accommodating cavity, 18-springs
19-card slot 20-movable rod, 21-pull rings
22-elastic sphere 23-spherical cavity, 24-buffer layers
25-the first pillar 27-elastic component of the 26-the second pillar
28-29-protrusions of handle.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made below with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.The utility model is carried out below in conjunction with attached drawing
Detailed description.
A kind of remaining needle of counterflow-preventing described in the present embodiment includes outer needle tubing 1, outer needle stand 2, inner needle tube 3 and interior needle
Seat 4, the outer needle stand 2 is fixed on the rear portion of outer needle tubing 1, and the inner needle tube 3 is fixed on interior needle stand 4, the interior needle stand 4 it is interior
Surface is provided with the fixed body 5 for positioning inner needle tube 3；The counterflow-preventing part 6 for counterflow-preventing is provided in the interior needle stand 4,
The counterflow-preventing part 6 includes mounting portion 10 and counterflow-preventing portion 11, and the counterflow-preventing portion 11 offers cross and cracks valve port 12；
The bottom of the interior needle stand 4 is provided with the supporting table 13 for being used to support counterflow-preventing part 6, is provided on the side of the supporting table 13
For the positioning column 14 in location and installation portion 10, the location hole 15 for cooperating with positioning column 14 is provided on the mounting portion 10；
The fastener 16 for blocking mounting portion 10 and the accommodating cavity 17 for accommodating fastener 16, the appearance are provided in the interior needle stand 4
The bottom for setting chamber 17 is fixedly connected with spring 18, and one end of the spring 18 is connect with fastener 16, and the mounting portion 10 is provided with
Card slot 19 for being clamped with fastener 16；Movable rod 20, one end of the movable rod 20 and fastener are connected on the fastener 16
16 connections, the other end of the movable rod 20 are arranged in the outer needle stand 2 of interior needle stand 4, and the other end of the movable rod 20 is connected with
Pull ring 21.Specifically, when counterflow-preventing part 6 to be installed to the bottom of inner needle tube 3, the supporting table 13 is abutted with counterflow-preventing part 6
When withstand counterflow-preventing part 6, remind installation personnel to prevent from continuing to push counterflow-preventing part 6；Then installation personnel pulls pull ring 21, pull ring
21, which are easily installed personnel, pulls fastener 16, under the action of movable rod 20, so that spring 18 is compressed and pulled fastener 16 interior
It is reduced in accommodating cavity 17；Further, mating by positioning column 14 and location hole 15, so that the position that counterflow-preventing part 6 is installed
It is accurate to set, and so far, installation personnel stops drag pull ring 21 so that spring 18 extends, fastener 16 under the elastic force effect of spring 18,
Pop-up accommodating cavity 17 simultaneously enters in the card slot 19 of mounting portion 10, and fastener 16 and card slot 19 are clamped, after guaranteeing that counterflow-preventing part 6 is installed
It is not easy to loosen, position is accurate；Wherein, in infusion, inner needle tube 3 passes through fixed body 5, and fixed body 5 plays the role of positioning, then
Inner needle tube 3 continues across counterflow-preventing part 6, cracks valve port 12 since the counterflow-preventing portion 11 of counterflow-preventing part 6 offers cross, interior needle
Pipe 3 can crack from cross easily to be passed through in valve port 12, is then infused human body；When not being infused, inner needle tube 3 is from interior
It is extracted in needle stand 4, inner needle tube 3 is detached from counterflow-preventing part 6；The counterflow-preventing portion 11 of counterflow-preventing part 6 itself has elastic restoring force, so
After inner needle tube 3 is extracted, the cross in counterflow-preventing portion 11 valve port 12 that cracks is closed automatically, and the cross valve port 12 that cracks does not generate out
Mouthful, blood back flow can be effectively prevented, so that the safety of remaining needle greatly improves；In the utility model, the knot of counterflow-preventing part 6
Structure is simple, design is reasonable, for relatively traditional valve for preventing reverse-flow, it is possible to reduce production cost, counterflow-preventing part 6 pass through interior needle stand 4
Structure simple, the accurate installation of counterflow-preventing part 6 may be implemented, guarantee that counterflow-preventing part 6 is not easy to loosen, it is safe to guarantee that it is used
Property, while blood back flow can be effectively prevented by counterflow-preventing part 6, it is easy to use, safe and reliable.
A kind of remaining needle of counterflow-preventing described in the present embodiment, the top of the positioning column 14 are provided with elastic sphere 22,
The top of the location hole 15 is provided with the spherical cavity 23 for accommodating elastic sphere 22.Specifically, pacify when by counterflow-preventing part 6
When being attached in interior needle stand 4, location and installation is carried out by positioning column 14 and location hole 15, to guarantee the position of the installation of counterflow-preventing part 6
Accurately；Further, during installation, elastic sphere 22 is introduced into location hole 15, the inner wall compressive elastic sphere 22 of location hole 15,
Until elastic sphere 22 is unfolded, and is stuck in spherical cavity 23 when elastic sphere 22 extend into spherical cavity 23, it is further ensured that
The position that counterflow-preventing part 6 is installed is accurate, and it is not easy to loosen, and mounting stability is good, using reliable.
A kind of remaining needle of counterflow-preventing described in the present embodiment, the mounting portion 10 are provided with buffer layer 24.Specifically, institute
The extruding force being subject to when installing counterflow-preventing part 6 can be slowed down by stating buffer layer 24, be prevented when installing counterflow-preventing part 6 because being pressed
Power and damage.
One row's formula of top of a kind of remaining needle of counterflow-preventing described in the present embodiment, the buffer layer 24 is provided with several
First pillar 25, the bottom row formula of the buffer layer 24 are provided with several the second pillars 26, first pillar 25 and
Two pillars 26 are staggered, the interval of the second pillar 26 setting, are provided with elastic component 27 between adjacent second pillar 26.Specifically
Ground, when buffer layer 24 is squeezed power, the top and bottom of the buffer layer 24 are close to each other, and the first pillar 25 presses to elasticity
Part 27 generates reaction force to the first pillar 25 by the elasticity that elastic component 27 carries, so that the first pillar 25 presses to bullet
Property part 27 when, buffer layer 24 plays the role of slowing down extruding force, and structure is simple, and design is reasonable；The elastic component 27 can be bullet
Piece, bullet muscle etc..
A kind of remaining needle of counterflow-preventing described in the present embodiment further includes the handle 28 having convenient for extracting inner needle tube 3 out, institute
It states and is provided with several protrusions 29 on handle 28, the handle 28 is connect with inner needle tube 3.Specifically, when in use, due to interior needle
Pipe 3 is relatively thin, and operator is difficult directly to be extracted inner needle tube 3 with hand；It is connect by handle 28 with inner needle tube 3, handle 28 can be square
Just operator when in use extracts inner needle tube 3；Further, it is provided with several protrusions 29 on handle 28, can increase
Frictional force between handle 28 and the hand of operator, the case where preventing operator's rubber sleeve.
A kind of remaining needle of counterflow-preventing described in the present embodiment, the counterflow-preventing part 6 are silica gel material.
The above is only the utility model preferred embodiment, is not made in any form to the utility model
Limitation, although the utility model is disclosed as above with preferred embodiment, is not intended to limit the utility model, any to be familiar with sheet
Technical professional is not departing within the scope of technical solutions of the utility model, makes when using the technology contents of the disclosure above
A little change or the equivalent embodiment for being modified to equivalent variations, but it is all without departing from the content of the technical scheme of the utility model, foundation
The utility model technology refers to any simple modification, equivalent change and modification to the above embodiments, belongs to practical
In the range of new technique scheme.
Claims (4)
1. a kind of remaining needle of counterflow-preventing, it is characterised in that: it include outer needle tubing, outer needle stand, inner needle tube and interior needle stand, it is described outer
Needle stand is fixed on the rear portion of outer needle tubing, and the inner needle tube is fixed on interior needle stand, and the inner surface of the interior needle stand, which is provided with, to be used for
Position the fixed body of inner needle tube；The counterflow-preventing part for counterflow-preventing is provided in the interior needle stand, the counterflow-preventing part includes
Mounting portion and counterflow-preventing portion, the counterflow-preventing portion offer cross and crack valve port；The bottom of the interior needle stand, which is provided with, to be used for
The supporting table of counterflow-preventing part is supported, the positioning column for location and installation portion, the installation are provided on the side of the supporting table
The location hole for cooperating with positioning column is provided in portion；The fastener and use for blocking mounting portion are provided in the interior needle stand
In the accommodating cavity of accommodating fastener, the bottom of the accommodating cavity is fixedly connected with spring, and one end of the spring is connect with fastener, institute
It states mounting portion and is provided with card slot for being clamped with fastener；Be connected with movable rod on the fastener, one end of the movable rod with
Fastener connection, the other end of the movable rod are arranged in the outer needle stand of interior needle stand, and the other end of the movable rod is connected with pull ring.
2. a kind of remaining needle of counterflow-preventing according to claim 1, it is characterised in that: the top of the positioning column is provided with
Elastic sphere is provided with the spherical cavity for accommodating elastic sphere at the top of the location hole.
3. a kind of remaining needle of counterflow-preventing according to claim 1, it is characterised in that: the mounting portion is provided with buffering
Layer.
4. a kind of remaining needle of counterflow-preventing according to claim 3, it is characterised in that: one row's formula of top of the buffer layer
Several the first pillars are provided with, the bottom row formula of the buffer layer is provided with several the second pillars, first pillar
It is staggered with the second pillar, second pillar interval is arranged, and is provided with elastic component between adjacent second pillar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721121231.3U CN208389103U (en) | 2017-09-01 | 2017-09-01 | A kind of remaining needle of counterflow-preventing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721121231.3U CN208389103U (en) | 2017-09-01 | 2017-09-01 | A kind of remaining needle of counterflow-preventing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208389103U true CN208389103U (en) | 2019-01-18 |
Family
ID=65066225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721121231.3U Expired - Fee Related CN208389103U (en) | 2017-09-01 | 2017-09-01 | A kind of remaining needle of counterflow-preventing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208389103U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999266A (en) * | 2019-04-30 | 2019-07-12 | 广州医科大学附属第三医院（广州重症孕产妇救治中心、广州柔济医院） | Injection device |
-
2017
- 2017-09-01 CN CN201721121231.3U patent/CN208389103U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999266A (en) * | 2019-04-30 | 2019-07-12 | 广州医科大学附属第三医院（广州重症孕产妇救治中心、广州柔济医院） | Injection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190118 Termination date: 20200901 |