CN210674008U - Large-flow positive pressure joint - Google Patents
Large-flow positive pressure joint Download PDFInfo
- Publication number
- CN210674008U CN210674008U CN201920177179.6U CN201920177179U CN210674008U CN 210674008 U CN210674008 U CN 210674008U CN 201920177179 U CN201920177179 U CN 201920177179U CN 210674008 U CN210674008 U CN 210674008U
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- China
- Prior art keywords
- movable core
- core rod
- cavity
- positive pressure
- joint
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- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a large-flow positive pressure joint, which comprises a cap, a joint body and a movable core rod arranged in the joint body, wherein the joint body consists of a positive end joint and a negative end joint; the movable core bar and the upper inner cavity of the female end joint form a positive pressure cavity; a liquid cavity is arranged in the movable core rod, and a plurality of through holes for communicating the positive pressure cavity with the liquid cavity are formed in the side wall of the movable core rod; an elastic body which is abutted against the bottom of the movable core rod is arranged in the inner cavity at the lower part of the female end joint; an external indwelling needle penetrates through the bottom of the male end connector through an inner needle to be communicated with the liquid cavity; the top of the liquid cavity is in a concave V shape and is formed by combining two inclined planes which incline inwards and downwards. The utility model discloses an inclined plane design at liquid chamber top can increase the velocity of flow of liquid wherein, satisfies the high flow demand.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to large-traffic malleation connects.
Background
The positive connector can generate positive pressure to prevent blood return and reduce catheter blockage. Moreover, the needle-free closed infusion joint does not need anticoagulant, and only needs to be flushed by physiological saline, thereby protecting patients with problems in blood coagulation mechanism.
The common problem of the existing forward joint structure is that the requirement cannot be met when the flow requirement is large, and the problem needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome the defects in the prior art, the utility model provides a large-flow positive pressure joint,
the technical scheme is as follows: in order to achieve the above object, the utility model adopts the following technical scheme:
a high-flow positive pressure joint comprises a cover cap, a joint body and a movable core rod arranged in the joint body, wherein the joint body consists of a positive end joint and a negative end joint, the upper end of the movable core rod is inserted into the negative end joint in a matching manner, the lower end of the movable core rod is arranged in an upper inner cavity of the negative end joint, and the outer wall of the lower end of the movable core rod is matched with the inner wall of the negative end joint and slides up and down along the inner wall of the negative end joint; the movable core bar and the upper inner cavity of the female end joint form a positive pressure cavity; a liquid cavity is arranged in the movable core rod, and a plurality of through holes for communicating the positive pressure cavity with the liquid cavity are formed in the side wall of the movable core rod; an elastic body which is abutted against the bottom of the movable core rod is arranged in an inner cavity at the lower part of the female end joint; an external indwelling needle penetrates through the bottom of the male end connector through an inner needle to be communicated with the liquid cavity; the top of the liquid cavity is in a concave V shape and is formed by combining two inclined planes which incline inwards and downwards.
Furthermore, the inclination angles of the two inclined planes at the top of the movable core rod are 0-45 degrees.
Furthermore, the two inclined planes at the top of the movable core rod are symmetrically designed.
Has the advantages that: the utility model provides a large-traffic malleation connects adopts the utility model discloses after the institutional advancement, the inclined plane design at liquid chamber top can increase the velocity of flow of liquid wherein to satisfy the high flow demand.
Drawings
Fig. 1 is a schematic structural view of embodiment 1.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
A high-flow positive pressure joint comprises a cover cap, a joint body and a movable core rod arranged in the joint body, wherein the joint body consists of a positive end joint and a negative end joint, the upper end of the movable core rod is inserted into the negative end joint in a matching manner, the lower end of the movable core rod is arranged in an upper inner cavity of the negative end joint, and the outer wall of the lower end of the movable core rod is matched with the inner wall of the negative end joint and slides up and down along the inner wall of the negative end joint; the movable core bar and the upper inner cavity of the female end joint form a positive pressure cavity; a liquid cavity is arranged in the movable core rod, and a plurality of through holes for communicating the positive pressure cavity with the liquid cavity are formed in the side wall of the movable core rod; an elastic body which is abutted against the bottom of the movable core rod is arranged in an inner cavity at the lower part of the female end joint; an external indwelling needle penetrates through the bottom of the male end connector through an inner needle to be communicated with the liquid cavity; the top of the liquid cavity is in a concave V shape and is formed by combining two inclined planes which incline inwards and downwards.
Preferably, the inclination angles of the two inclined planes at the top of the movable core rod are 0-45 degrees.
Preferably, the two inclined planes at the top of the movable core rod are symmetrically designed.
Examples
Before improvement, the top of the liquid cavity is a plane, and the flow rate is small and cannot meet the requirement when the liquid cavity is used.
Adopt the utility model discloses after the institutional advancement, change the hole top into two inclined planes and combine, flow satisfied requirement when improving the back and using, as shown in figure 1.
The utility model is suitable for a product is clinical and is used for the infusion with keeping somewhere needle, transfusion system supporting, and application method is as follows:
1. the product is removed from the single package.
2. And taking off the sheath, locking the female connector end of the sealed connector body with a standard outer cone locking connector of the infusion apparatus, and exhausting air upwards from the male connector end.
3. Locking the male connector end of the connector body and the luer locking connector of the indwelling needle by using a threaded retainer ring, and performing conventional indwelling needle puncture infusion after air in the indwelling needle is removed;
the movable core bar inside the female connector end is pressed by a luer connector of an infusion apparatus to move towards the lower part of the female connector end, and the elastic body is compressed. So that the movable core rod and the upper inner cavity of the female end joint form a positive pressure cavity, liquid flows to the liquid cavity through the positive pressure cavity and the through hole and then flows out to the indwelling needle through the inner needle, and the positive pressure cavity and the liquid cavity are filled with the liquid. The inclined plane design at the top of the liquid cavity can increase the flow velocity of liquid in the liquid cavity, so that the requirement of high flow is met.
4. After the transfusion is finished, the remaining needle is closed, the luer connector of the transfusion device is taken off, the pressure is cancelled, the compressed elastic body rebounds, the upper end of the movable core rod enters the upper inner cavity of the female end connector again, at the moment, the liquid in the positive pressure cavity keeps positive pressure, and the positive pressure is kept under the condition that no liquid flows out of the remaining needle, so that the blood backflow can be prevented.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (2)
1. A large-traffic positive pressure connects which characterized in that: the connector comprises a cap, a connector body and a movable core rod arranged in the connector body, wherein the connector body consists of a male end connector and a female end connector, the upper end of the movable core rod is inserted into the female end connector in a matching manner, the lower end of the movable core rod is arranged in an inner cavity at the upper part of the female end connector, and the outer wall of the lower end of the movable core rod is matched with the inner wall of the female end connector and slides up and down along the inner wall of the female end connector; the movable core bar and the upper inner cavity of the female end joint form a positive pressure cavity; a liquid cavity is arranged in the movable core rod, and a plurality of through holes for communicating the positive pressure cavity with the liquid cavity are formed in the side wall of the movable core rod; an elastic body which is abutted against the bottom of the movable core rod is arranged in an inner cavity at the lower part of the female end joint; an external indwelling needle penetrates through the bottom of the male end connector through an inner needle to be communicated with the liquid cavity; the top of the liquid cavity is in a concave V shape and is formed by combining two inclined planes which are inclined inwards and downwards; the two inclined planes at the top of the movable core rod are symmetrically designed.
2. The high flow positive pressure fitting of claim 1, wherein: the inclination angles of the two inclined planes at the top of the movable core rod are 0-45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920177179.6U CN210674008U (en) | 2019-02-01 | 2019-02-01 | Large-flow positive pressure joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920177179.6U CN210674008U (en) | 2019-02-01 | 2019-02-01 | Large-flow positive pressure joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210674008U true CN210674008U (en) | 2020-06-05 |
Family
ID=70881072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920177179.6U Expired - Fee Related CN210674008U (en) | 2019-02-01 | 2019-02-01 | Large-flow positive pressure joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210674008U (en) |
-
2019
- 2019-02-01 CN CN201920177179.6U patent/CN210674008U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20200605 Termination date: 20220201 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |