CN213491124U

CN213491124U - Positive pressure transfusion joint

Info

Publication number: CN213491124U
Application number: CN202022274749.9U
Authority: CN
Inventors: 周燕
Original assignee: Shenzhen Leningkang Medical Technology Co ltd
Current assignee: Shenzhen Leningkang Medical Technology Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-06-22
Anticipated expiration: 2030-10-14

Abstract

A positive pressure transfusion joint comprises a supporting piece, a lower cover cylinder, an upper cover cylinder, an elastic piece and a plug column, wherein the lower end of the supporting piece is provided with a Ruhr female joint, the upper end of the supporting piece is provided with a drainage column, a drainage channel penetrating through the supporting piece to the outside is arranged in the drainage column, and the top of the drainage column is also provided with a liquid inlet communicated with the drainage channel; the first end of the lower cover cylinder is arranged at the upper end of the supporting piece, and a movable cavity is arranged in the lower cover cylinder and sleeved outside the liquid drainage column through the movable cavity; the bottom end of the upper cover cylinder is in threaded connection with the second end of the lower cover cylinder, a moving groove for communicating the outside with the movable cavity is further formed in the upper cover cylinder, and a luer male connector is further arranged at the top end of the upper cover cylinder; the plug column is slidably sleeved on the drainage column, and the first end of the plug column is positioned in the movable cavity and is abutted against the upper end of the supporting piece through the elastic piece; the second end of the plug is positioned in the movable groove and used for shielding the liquid inlet; the liquid inlet can be exposed by moving the plug column along the length direction of the liquid discharge column; the size of the liquid inlet can be adjusted and controlled by adjusting the distance between the upper cover cylinder and the lower cover cylinder.

Description

Positive pressure transfusion joint

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a positive pressure infusion joint.

Background

The positive pressure transfusion joint is a medical article commonly used in clinical medical treatment, is in a sealing state under the condition of no external connecting piece and keeps a sterile state. The liquid drainage channel is opened under the action of external force, and the liquid channel is closed after the external force disappears. In the prior art, the positive pressure infusion joint mainly comprises a shell, a base, a movable plug, a sealing ring, a stainless steel spring and the like, and is stable in structure, but has a place needing to be improved in function:

the back is opened to the flowing back passageway that current malleation infusion connects, and the size of flowing back passageway's opening is fixed, leads to the flowing back passageway to be the ration and discharges, but in the in-service use process, the emission of flowing back passageway should adjust according to patient's health adaptability to improve patient's comfort level, for this very necessary design a malleation infusion of adjustable flowing back passageway emission of money connects.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to solve the problems, the utility model provides a positive pressure transfusion joint, which solves the problems in the background technology.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme:

a positive pressure infusion joint comprises a supporting piece, a lower cover cylinder, an upper cover cylinder, an elastic piece and a plug column, wherein the lower end of the supporting piece is provided with a Ruhr female joint, the upper end of the supporting piece is provided with a drainage column, a drainage channel penetrating through the supporting piece to the outside is arranged in the drainage column, and the top of the drainage column is also provided with a liquid inlet communicated with the drainage channel; the first end of the lower cover cylinder is arranged at the upper end of the supporting piece, and a movable cavity is arranged in the lower cover cylinder and sleeved outside the liquid drainage column through the movable cavity; the bottom end of the upper cover cylinder is in threaded connection with the second end of the lower cover cylinder, a moving groove for communicating the outside with the movable cavity is further formed in the upper cover cylinder, and a luer male connector is further arranged at the top end of the upper cover cylinder; the plug column is slidably sleeved on the drainage column, and the first end of the plug column is positioned in the movable cavity and is abutted against the upper end of the supporting piece through the elastic piece; the second end of the plug is positioned in the moving groove and used for shielding the liquid inlet; the liquid drainage channel can be opened by driving the plug column to move along the length direction of the liquid drainage column and exposing the liquid inlet; the size of the liquid inlet can be controlled by screwing and adjusting the relative distance between the upper cover cylinder and the lower cover cylinder, and then the discharge amount of the liquid drainage channel is adjusted.

Preferably, the outer side of the bottom end of the upper cover cylinder is provided with an anti-slip column.

Preferably, an anti-falling block is arranged at the second end of the lower cover cylinder, a stop block is arranged at the first end of the plug, and the stop block can be abutted against the anti-falling block so as to prevent the plug from being separated from the movable cavity.

Preferably, the second end of the plug is provided with a rubber ring in transition fit with the inner wall of the moving groove.

Preferably, the second end of the plug is also provided with a water diversion chamfer with an inclined design.

Preferably, the safety device further comprises a safety ring, wherein the safety ring can be sleeved outside the second end of the lower cover cylinder to limit the upper cover cylinder to rotate relative to the lower cover cylinder.

Preferably, the upper cover cylinder is made of transparent plastic materials.

Preferably, the elastic member is a stainless steel spring.

(III) advantageous effects

The utility model provides a pair of malleation infusion connects, an upper cover section of thick bamboo and a lower cover section of thick bamboo through the mutual threaded connection of design for the relative distance of adjustment drainage post and an upper cover section of thick bamboo, make the leakage fluid dram at drainage capital portion be close to or keep away from the open-top of shifting chute, guarantee cylinder or pipe can follow drainage post length direction and promote the stopper post to the size of suitable position in order to adjust the leakage fluid dram, and then control the emission of flowing back passageway.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 shows a schematic diagram of the overall structure of the present invention;

fig. 2 shows a schematic diagram of the overall structure of the present invention;

FIG. 3 shows a cross-sectional view A-A of FIG. 2;

FIG. 4 shows an enlarged view at B in FIG. 3;

figure 5 shows an exploded schematic view of the present invention;

fig. 6 shows a part of the structure diagram of the invention;

fig. 7 shows a schematic diagram of a part of the structure of the present invention;

fig. 8 shows a schematic diagram of a part of the structure of the present invention.

In the figure: the device comprises a support member 1, a liquid drainage column 11, a liquid drainage channel 110, a liquid inlet 110a, a lower cover cylinder 2, a movable cavity 20, a 2f anti-falling block, an upper cover cylinder 3, a moving groove 30, an anti-sliding column 3h, an elastic member 4, a plug column 5, a water diversion chamfer 5d, a stop 5f, a rubber ring Q1 and a safety ring Q2.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-8, a positive pressure infusion joint comprises a support member 1, a lower cover cylinder 2, an upper cover cylinder 3, an elastic member 4 and a plug 5, wherein a luer female joint is arranged at the lower end of the support member 1, a liquid discharge column 11 is arranged at the upper end of the support member 1, a liquid discharge channel 110 penetrating through the support member 1 to the outside is arranged inside the liquid discharge column 11, and a liquid inlet 110a communicated with the liquid discharge channel 110 is also arranged at the top of the liquid discharge column 11; the first end of the lower cover cylinder 2 is arranged at the upper end of the supporting piece 1, and a movable cavity 20 is arranged in the lower cover cylinder 2 and is sleeved outside the drainage column 11 through the movable cavity 20; the bottom end of the upper cover cylinder 3 is in threaded connection with the second end of the lower cover cylinder 2, a moving groove 30 communicating the outside with the movable cavity 20 is further formed in the upper cover cylinder 3, and a luer male connector is further arranged at the top end of the upper cover cylinder 3; the plug column 5 is slidably sleeved on the drainage column 11, and the first end of the plug column 5 is positioned in the movable cavity 20 and is abutted against the upper end of the support member 1 through the elastic member 4; the second end of the plug 5 is positioned in the moving groove 30 to shield the liquid inlet 110 a; the liquid discharge channel 110 can be opened by driving the plug 5 to move along the length direction of the liquid discharge column 11 and expose the liquid inlet 110 a; the size of the liquid inlet 110a can be controlled by screwing and adjusting the relative distance between the upper cover cylinder 3 and the lower cover cylinder 2, so as to adjust the discharge amount of the liquid discharge channel 110.

Specifically, when the device is used, a catheter is firstly used for connecting the vein of a patient and a luer female connector at the lower end of the support member 1, the vein of the patient is communicated with the liquid drainage channel 110, then a needle cylinder loaded with physiological saline is aligned to a luer male connector on the upper cover cylinder 3, the needle head end of the needle cylinder is driven to abut against the second end of the plug column 5, the plug column 5 is pushed to extrude the plug column 5, the plug column 5 can move along the length direction of the liquid drainage column 11 and expose the liquid inlet 110a, and the elastic member 4 is compressed under force in the process; until the needle head end of the syringe is sleeved with the top of the liquid discharge column 11 and communicated with the liquid inlet 110a, the physiological saline in the syringe is pushed into the liquid discharge channel 110 and flows into the body of a patient;

at this time, if the patient needs to continuously inject the medicine into the body, the syringe can be taken down firstly, the elastic part 4 releases energy to recover and drives the plug 5 to recover to the original position so as to cover the liquid inlet 110a and prevent external dust from entering the liquid drainage channel 110; then, a user uses one end of the medical catheter to connect an infusion bag filled with medicine, and pushes the other end of the catheter against the second end of the plug column 5, then the catheter is pushed, so that the plug column 5 moves along the length direction of the liquid drainage column 11 and exposes out of the liquid inlet 110a, at the moment, the catheter sleeves the top of the liquid drainage column 11 and is communicated with the liquid inlet 110a, and then the infusion work can be normally carried out;

it should be noted that, in order to avoid the looseness of the catheter or the needle cylinder in the process of delivering the medicament, the luer male connector is designed in the utility model, and the needle end and the catheter end of the needle cylinder are both provided with corresponding luer female connectors, so as to ensure that the needle cylinder or the catheter and the upper cover cylinder 3 are in a fixed connection state in the process of infusion; after the luer female connector is mounted on the needle or the conduit, the length of one end of the needle or the conduit, which protrudes out of the luer female connector, is limited, so that the plug 5 cannot be freely pushed to a proper position, the exposed size of the liquid inlet 110a is difficult to adjust, and the discharge amount of the liquid discharge channel 110 is difficult to control; in order to solve the problem, the utility model discloses in design upper cover section of thick bamboo 3 and lower cover section of thick bamboo 2 of mutual threaded connection, when needs adjustment inlet 110a size, through twisting upper cover section of thick bamboo 3, order about upper cover section of thick bamboo 3 and lower cover section of thick bamboo 2 and draw close relatively, make the opening of the moving groove 30 that drains liquid column 11 top is close to upper cover section of thick bamboo 3 relatively, the syringe needle end or the pipe of cylinder can push up the cock stem 5 to the below along draining column 11 direction at this moment in order to enlarge inlet 110a, guarantee that the medicament in cylinder or the infusion bag can pass through inlet 110a more fast and get into in draining passageway 110, thereby reach the effect of the discharge volume of increase draining passageway 110;

similarly, when the size of the liquid inlet 110a needs to be reduced, the upper cover cylinder 3 is screwed to drive the upper cover cylinder 3 and the lower cover cylinder 2 to be relatively far away, so that the top of the liquid drainage column 11 is relatively far away from the opening of the moving groove 30 of the upper cover cylinder 3.

In particular, the use of luer fittings is common in the art and therefore not described in any unnecessary detail herein.

To sum up, the utility model discloses a design mutual threaded connection's an upper cover section of thick bamboo 3 and a lower cover section of thick bamboo 2 for the relative distance of adjustment drainage post 11 and an upper cover section of thick bamboo 3, make the leakage fluid dram at drainage post 11 top be close to or keep away from the open-top of shifting chute 30, guarantee that cylinder or pipe can follow 11 length direction of drainage post and promote the size of stopper post 5 to suitable position in order to adjust the leakage fluid dram, and then control drainage channel 110's emission.

Referring to fig. 2, the outer side of the bottom end of the upper cover cylinder 3 is provided with an anti-slip column 3h to increase the friction force of the upper cover cylinder 3, so that a user can conveniently twist the upper cover cylinder 3.

Referring to fig. 3-7, considering that the elastic member 4 can push the plunger 5 in the process of recovering by releasing energy, in order to prevent the top of the plunger 5 from being pushed out of the moving groove 30, the utility model discloses in, the second end of the lower cover cylinder 2 is equipped with the anti-disengaging block 2f, the first end of the plunger 5 is equipped with the dog 5f, and the dog 5f can offset with the anti-disengaging block 2f, so as to avoid the plunger 5 to break away from the movable cavity 20.

Referring to fig. 3-4, the second end of the plug 5 is provided with a rubber ring Q1 in transition fit with the inner wall of the moving groove 30 for increasing the overall tightness of the positive pressure infusion connector.

Furthermore, referring to fig. 3 and 8, the second end of the plunger 5 is further provided with a water diversion chamfer 5d with an inclined design, and the water diversion groove is designed to temporarily concentrate the medicament flowing out of the syringe or the conduit to the top of the plunger 5 after the syringe or the conduit abuts against the plunger 5, so that on one hand, the medicament can be prevented from flowing out of the outer edge of the top of the plunger 5, and on the other hand, the medicament can more easily flow into the liquid drainage channel 110.

Referring to fig. 2 to 6, a safety ring Q2 is further included, the safety ring Q2 can be sleeved outside the second end of the lower cap cylinder 2 to limit the rotation of the upper cap cylinder 3 relative to the lower cap cylinder 2, so as to prevent the rotation of the upper cap cylinder 3 and the lower cap cylinder 2 when the positive pressure infusion connector is not used; when the positive pressure infusion joint is used and the discharge amount of the liquid discharge channel 110 needs to be adjusted, the safety ring Q2 needs to be taken down firstly; in particular, the safety ring Q2 is made of elastic plastic material.

Referring to fig. 2-5, the upper cover cylinder is made of a transparent plastic material 3, so that the user can observe the exposed size of the liquid inlet 110 a.

Referring to fig. 2-5, the elastic member 4 is a stainless steel spring with high corrosion resistance, and may be replaced by a plastic spring or an elastic air bag.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Claims

1. A positive pressure transfusion joint is characterized by comprising a supporting piece (1), a lower cover cylinder (2), an upper cover cylinder (3), an elastic piece (4) and a plug (5),

the support is characterized in that a luer female connector is arranged at the lower end of the support (1), a liquid drainage column (11) is arranged at the upper end of the support (1), a liquid drainage channel (110) penetrating through the support (1) to the outside is arranged inside the liquid drainage column (11), and a liquid inlet (110a) communicated with the liquid drainage channel (110) is further arranged at the top of the liquid drainage column (11);

the first end of the lower cover cylinder (2) is arranged at the upper end of the supporting piece (1), a movable cavity (20) is arranged in the lower cover cylinder (2), and the lower cover cylinder is sleeved outside the drainage column (11) through the movable cavity (20);

the bottom end of the upper cover cylinder (3) is in threaded connection with the second end of the lower cover cylinder (2), a moving groove (30) communicated with the outside and the movable cavity (20) is further formed in the upper cover cylinder (3), and a luer male connector is further arranged at the top end of the upper cover cylinder (3);

the plug column (5) is slidably sleeved on the drainage column (11), and the first end of the plug column (5) is positioned in the movable cavity (20) and is abutted against the upper end of the support piece (1) through the elastic piece (4); the second end of the plug (5) is positioned in the moving groove (30) for shielding the liquid inlet (110 a);

the liquid drainage channel (110) can be opened by driving the plug column (5) to move along the length direction of the liquid drainage column (11) and exposing the liquid inlet (110 a); the size of the liquid inlet (110a) can be controlled by screwing and adjusting the relative distance between the upper cover cylinder (3) and the lower cover cylinder (2), and then the discharge amount of the liquid discharge channel (110) is adjusted.

2. The positive pressure infusion connector according to claim 1, wherein the outer side of the bottom end of the upper cover cylinder (3) is provided with an anti-slip column (3 h).

3. The positive pressure infusion connector according to claim 1, wherein the second end of the lower cover cylinder (2) is provided with a retaining block (2f), the first end of the plunger (5) is provided with a stop block (5f), and the stop block (5f) can abut against the retaining block (2f) to prevent the plunger (5) from separating from the movable cavity (20).

4. The positive pressure infusion connector according to claim 3, wherein the second end of the plug (5) is provided with a rubber ring (Q1) which is in transition fit with the inner wall of the moving groove (30).

5. A positive pressure infusion connector according to claim 3, wherein the second end of the plunger (5) is provided with a beveled leading chamfer (5 d).

6. The positive pressure infusion connector of claim 1, further comprising a safety ring (Q2), wherein the safety ring (Q2) is mountable on the outside of the second end of the lower cap barrel (2) to limit the rotation of the upper cap barrel (3) relative to the lower cap barrel (2).

7. The positive pressure infusion connector according to claim 1, wherein the cover cylinder (3) is made of transparent plastic.

8. The positive pressure infusion connector according to claim 1, wherein the elastic member (4) is a stainless steel spring.