CN114177408A

CN114177408A - Adjustable needleless infusion joint

Info

Publication number: CN114177408A
Application number: CN202111490248.7A
Authority: CN
Inventors: 陆军; 陆维炜; 赵丽杰; 倪琳; 陈天柱
Original assignee: Jiangsu Caina Medical Technology Co ltd
Current assignee: Jiangsu Caina Medical Technology Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-03-15

Abstract

The invention discloses an adjustable needle-free infusion joint, which relates to the field of medical instruments and comprises a positive end, wherein an adjusting assembly is arranged inside the positive end, internal threads are arranged below the inside of the positive end, the top of the positive end is connected with a connector, the top of the connector is connected with a negative end, and external threads are connected above the outer surface of the negative end. According to the invention, through the sealing element, the hollow rubber sleeve, the sealing plate, the elastic reset ring and the rubber connecting belt, when the female end is connected with the connector, the sealing element is stressed to deform towards two sides so that liquid medicine can enter, meanwhile, the two sides of the sealing element extrude the hollow rubber sleeve and the elastic reset ring, the shape of the elastic reset ring is similar to that of a spring, but the elastic reset ring expands to enlarge the diameter of the structure and store the force instead of compressing and storing the force like the spring after being extruded, meanwhile, the phenomenon that the liquid medicine is contacted with the elastic reset ring due to liquid seepage at two sides after the sealing element is aged is avoided through the arrangement of the hollow rubber sleeve, and meanwhile, the metal structure is not contacted with the liquid medicine so as to delay the aging of the structure.

Description

Adjustable needleless infusion joint

Technical Field

The invention relates to the field of medical instruments, in particular to an adjustable needle-free infusion joint.

Background

Partial patient need inject liquid medicine in succession in the treatment so the hand can generally leave the needle of keeping somewhere, medical personnel usually adopt the heparin cap to avoid blood adverse current as seal structure when injecting to patient in the past, because various reasons heparin cap and no longer popularize, but adopt more convenient needleless infusion to connect, adopt needleless infusion to connect carry out the emergence that the needle pricked the phenomenon can effectively be avoided injecting to the patient in succession, partial needleless infusion connects now simultaneously has a plurality of negative ends can input multiple liquid medicine, need not to establish the painful of patient of cost saving simultaneously in addition, it is extremely convenient to use.

The existing needle-free infusion connector is generally sealed by a spring and an end cap to avoid blood backflow, although the structure is simple, the spring is easy to age after being soaked in liquid medicine for a long time to influence the service life, meanwhile, rusty spots generated after the spring ages are also easy to pollute the liquid medicine, the use is inconvenient, and the existing needle-free infusion connector needs to clamp a pipeline connected with a positive end when an empty medicine bottle is replaced so as to prevent the sealing structure from resetting to generate negative pressure to draw out blood, the operation is complex, meanwhile, the clamp also has the risk of loss, and the use is inconvenient due to high cost.

Disclosure of Invention

Based on the above, the invention aims to provide an adjustable needleless infusion connector, so as to solve the technical problems of poor sealing effect, short service life and complicated operation when a medicine bottle is replaced.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a needleless infusion connects with adjustable, includes positive end, the inside of positive end is provided with adjusting part, the inside below of positive end is provided with the internal thread, the top of positive end is connected with the connector, the top of connector is connected with negative end, the surface top of negative end is connected with the external screw thread, the inside of negative end is provided with seal assembly.

Through adopting above-mentioned technical scheme, seal assembly makes the closing plate upwards warp and blocks up first connecting seat when passing through the liquid medicine against the current to the closing plate appliedly, simultaneously drag the closing plate through setting up of rubber connection area and avoid the closing plate atress too big turn up and lead to the liquid medicine to flow against the current, the sealed effect of dual seal effective increase structure avoids the liquid medicine backward flow simultaneously, adjusting component makes the elastic hose receive the extrusion through rotating the cam and is blockked up, avoid connecting to extract back negative pressure and take out patient's blood, avoid the cam landing to lead to the elastic hose no longer by the extrusion through setting up of antislip strip simultaneously.

Further, seal assembly is including connecting in the sealing member of connector surface, connecting in the inside hollow rubber sleeve of negative end and connecting in the first connecting seat of the inside below of negative end, the clearance groove has all been seted up to the inside both sides of sealing member, the internal connection of hollow rubber sleeve has the elasticity ring that resets, the inside both sides of first connecting seat all are connected with the closing plate, two the bottom of closing plate all is connected with rubber connection area.

Through adopting above-mentioned technical scheme, the sealing member atress makes the liquid medicine can get into to both sides deformation when negative end access joint, and the both sides extrusion hollow rubber cover and the elasticity of sealing member return the ring simultaneously, and elasticity returns the ring appearance and is similar to the spring, but elasticity returns the ring and receives the extrusion back and do not hold power like the general compression of spring but the inflation makes the structure diameter grow hold power, avoids the emergence that the ageing back both sides sepage of sealing member leads to liquid medicine and elasticity to return the ring contact phenomenon through the setting of hollow rubber cover simultaneously.

Furthermore, the adjusting component comprises a rotating rod connected to one side of the inner portion of the positive end and a second connecting seat connected to the inner portion of the positive end, a cam is connected to the outer surface of the rotating rod, an anti-slip strip is arranged on the outer surface of the cam, and an elastic hose is connected to the top of the second connecting seat.

Through adopting above-mentioned technical scheme, make the elastic hose receive the extrusion and be blockked up through rotating the cam when needs will empty medicine bottle change, avoid connecting to extract back negative pressure and take patient's blood out, avoid the cam landing to lead to the elastic hose no longer by the extrusion through the setting up of antislip strip simultaneously, increase structural seal nature through the setting up of first connecting seat and second connecting seat simultaneously, avoid the air to pass and pollute the liquid medicine in the space entering infusion tube of cam position.

Furthermore, one side of the sealing plate inclines downwards along the middle direction in the first connecting seat, and the lower part in the first connecting seat is in a slope shape.

Through adopting above-mentioned technical scheme, exert pressure to the closing plate when the liquid medicine is against the current and make the closing plate upwards warp and block up first connecting seat, pull the closing plate through the setting of rubber connection area simultaneously and avoid the closing plate atress too big turn over and lead to the liquid medicine to flow against the current that turns up.

Furthermore, the cam is connected with the male end in a rotating mode through the rotating rod, and the second connecting seat is detachably connected with the male end.

Through adopting above-mentioned technical scheme, make the elastic hose receive the extrusion to be blockked up through rotating the cam when needing to change empty medicine bottle, avoid connecting to extract back negative pressure and take patient's blood out, avoid the cam landing to lead to the elastic hose no longer by the extrusion through the setting of antislip strip simultaneously.

Furthermore, the included angle between the rubber connecting belt and the sealing plate is 45 degrees, and the two sealing plates and the two rubber connecting belts are distributed in a mirror image mode along the longitudinal axis center line of the first connecting seat.

Through adopting above-mentioned technical scheme, the liquid medicine gets into the back closing plate and receives pressure downward deformation to make the liquid medicine can get into positive end in, when the liquid medicine is adverse current to the closing plate exert pressure make the closing plate upwards warp and block up first connecting seat, drag the closing plate through the setting of rubber connection area simultaneously and avoid the closing plate atress too big turn up and lead to the liquid medicine adverse current, the liquid medicine backward flow is avoided simultaneously to the sealed effect of double seal effective increase structure.

Furthermore, the positive end is in threaded connection with the connector, and the negative end is detachably connected with the connector.

Through adopting above-mentioned technical scheme, through positive end and connector threaded connection and negative end and connector dismantlement connection conveniently carry out the modularization production and reduce the production degree of difficulty, the structure that medical personnel of being convenient for will damage is changed simultaneously.

Furthermore, the elastic reset ring is in a spiral shape, and the first connecting seat is in threaded connection with the connecting head.

Through adopting above-mentioned technical scheme, elasticity reset ring appearance is similar to the spring, but elasticity reset ring receives the extrusion back and does not hold power like the general compression of spring but the inflation makes the structure diameter grow hold power, and the sealing member loses pressure when taking out from negative end and resets and avoids the liquid medicine backward flow with structural seal, and elasticity reset ring assists the sealing member to reset simultaneously and avoids the ageing unable reseing of sealing member.

In summary, the invention mainly has the following beneficial effects:

1. the invention uses the sealing element, the hollow rubber sleeve, the sealing plate, the elastic reset ring and the rubber connecting belt, when the negative end is connected with the joint, the sealing element is stressed to deform towards two sides so that the liquid medicine can enter, simultaneously, the two sides of the sealing element extrude the hollow rubber sleeve and the elastic reset ring, the shape of the elastic reset ring is similar to a spring, but the elastic reset ring expands to enlarge the diameter of the structure and accumulate the force instead of compressing and accumulating the force like the spring after being extruded, simultaneously, the hollow rubber sleeve is arranged to avoid the phenomenon that the liquid medicine is contacted with the elastic reset ring due to the liquid seepage at two sides after the sealing element is aged, the service life of the structure is prolonged, the liquid medicine enters the back sealing plate and is stressed to deform downwards so that the liquid medicine can enter the positive end, when the liquid medicine flows reversely, the pressure is applied to the sealing plate to deform upwards to block the first connecting seat, and the sealing plate is pulled by the arrangement of the rubber connecting belt so as to avoid the liquid medicine flowing reversely due to overlarge stress of the sealing plate, the double sealing effectively increases the sealing effect of the structure and simultaneously avoids liquid medicine backflow, when the connector is taken out from the negative end, the sealing element loses pressure reset to seal the structure and avoid liquid medicine backflow, meanwhile, the elastic reset ring assists the sealing element in resetting to avoid the sealing element from aging and being incapable of resetting, the sealing effect is good, the service life is long, and meanwhile, the metal structure is not in contact with the liquid medicine to delay the structure aging;

2. according to the invention, through the cam, the rotating rod, the elastic hose, the first connecting seat, the second connecting seat and the anti-slip strip, when an empty medicine bottle needs to be replaced, the elastic hose is extruded and blocked through rotating the cam, the situation that the blood of a patient is drawn out by negative pressure after the connector is pulled out is avoided, meanwhile, the elastic hose is prevented from being extruded any more due to the fact that the cam slides down through the arrangement of the anti-slip strip, meanwhile, the structural sealing property is increased through the arrangement of the first connecting seat and the second connecting seat, air is prevented from entering the infusion tube through a gap at the position of the cam to pollute the liquid medicine, the infusion tube is not required to be clamped by an additional clamp, and the operation is simple, convenient and effective, and the situation that the blood of the patient is drawn out by negative pressure when the empty medicine bottle is replaced is avoided.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic cross-sectional view of the female end of the present invention;

FIG. 3 is a cross-sectional view of the first connecting seat of the present invention;

FIG. 4 is a schematic cross-sectional view of the male end of the present invention;

fig. 5 is a schematic view of the explosion structure of the elastic hose of the present invention.

In the figure: 1. a positive end; 2. a connector; 3. a negative end; 4. an external thread; 5. an internal thread; 6. a seal assembly; 601. a seal member; 602. a hollow rubber sleeve; 603. a first connecting seat; 604. a sealing plate; 605. an elastic reset ring; 606. an empty avoiding groove; 607. a rubber connecting belt; 7. an adjustment assembly; 701. a cam; 702. a rotating rod; 703. an elastic hose; 704. a second connecting seat; 705. and (4) an anti-slip strip.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The following describes an embodiment of the present invention based on its overall structure.

The utility model provides a needleless infusion connects with adjustable, as shown in figure 1, 2 and 4, including positive end 1, the inside of positive end 1 is provided with adjusting part 7, negative pressure is taken patient's blood out when easy operation is convenient effectively avoids changing empty medicine bottle, the inside below of positive end 1 is provided with internal thread 5, the top of positive end 1 is connected with connector 2, the top of connector 2 is connected with negative end 3, the surface top of negative end 3 is connected with external screw thread 4, the inside of negative end 3 is provided with seal assembly 6, the better long service life of sealed effect, metal structure does not delay the structure ageing with the liquid medicine contact simultaneously, positive end 1 and connector 2 threaded connection, and negative end 3 is dismantled with connector 2 and is connected, conveniently change the medicine bottle.

Referring to fig. 1, 2 and 3, the sealing assembly 6 includes a sealing member 601 connected to an outer surface of the connector 2, a hollow rubber sleeve 602 connected to an inner portion of the female end 3, and a first connecting base 603 connected to a lower portion of an inner portion of the female end 3, two sides of the inner portion of the sealing member 601 are both provided with a clearance groove 606, the inner portion of the hollow rubber sleeve 602 is connected with an elastic return ring 605, two sides of the inner portion of the first connecting base 603 are both connected with sealing plates 604, bottoms of the two sealing plates 604 are both connected with rubber connecting bands 607, one side of the sealing plate 604 is inclined downward along a middle direction of the inner portion of the first connecting base 603, the lower portion of the inner portion of the first connecting base 603 is in a slope shape, an included angle between the rubber connecting bands 607 and the sealing plates 604 is 45 °, the two sealing plates 604 and the two rubber connecting bands 607 are both distributed along a center line of a longitudinal axis of the first connecting base 603, the elastic return ring 605 is in a spiral shape, and the first connecting base 603 is in a threaded connection with the connector 2, the sealing effect is good, the service life is long, and meanwhile, the metal structure does not contact with liquid medicine to delay the structure aging.

Referring to fig. 1, 4 and 5, adjusting part 7 is including connecting in the bull stick 702 of the inside one side of positive end 1 and connecting in the inside second connecting seat 704 of positive end 1, the surface of bull stick 702 is connected with cam 701, the surface of cam 701 is provided with antislip strip 705, the top of second connecting seat 704 is connected with flexible hose 703, cam 701 passes through bull stick 702 and positive end 1 swivelling joint, and second connecting seat 704 is connected with positive end 1 dismantlement, the simple operation is convenient negative pressure when effectively avoiding changing empty medicine bottle takes out patient's blood.

The implementation principle of the embodiment is as follows: firstly, when the empty medicine bottle is replaced, medical staff rotates the cam 701 to enable the elastic hose 703 to be squeezed and blocked, the blood of a patient is prevented from being drawn out by negative pressure after the medicine bottle connector is pulled out, meanwhile, the situation that the elastic hose 703 is not squeezed any more due to the fact that the cam 701 slides down is avoided through the arrangement of the anti-slip strip 705, meanwhile, the structural sealing performance is improved through the arrangement of the first connecting seat 603 and the second connecting seat 704, the situation that air enters the infusion tube through a gap between the cam 701 and the positive end 1 to pollute liquid medicine is avoided, then the medical staff takes the medicine bottle connector off from the negative end 3, when the connector is taken out from the negative end 3, the structural sealing part 601 loses pressure and resets to avoid the backflow of the liquid medicine is avoided, meanwhile, the elastic reset ring 605 assists the sealing part 601 to reset to avoid the sealing part 601 from aging and failing to reset after the use, then the medical staff carries out the disinfection work on the negative end 3 and washes the interior of the needleless infusion connector, then the medical staff connects the joint of a new medicine bottle to the negative end 3, when the negative end 3 is connected with the joint, the sealing part 601 is stressed to deform towards the two sides so that the medicine liquid can enter, meanwhile, two sides of the sealing member 601 press the hollow rubber sleeve 602 and the elastic return ring 605, the shape of the elastic return ring 605 is similar to a spring, but the elastic return ring 605 is compressed to store force not like a spring but expanded to enlarge the diameter of the structure to store force, meanwhile, due to the arrangement of the hollow rubber sleeve 602, the phenomenon that liquid medicine is contacted with the elastic reset ring 605 due to liquid seepage at two sides after the sealing piece 601 is aged is avoided, the service life of the structure is prolonged, the liquid medicine enters the rear sealing plate 604 and is deformed downwards under pressure, so that the liquid medicine can enter the positive end 1, when the chemical solution flows backward, the sealing plate 604 is pressurized to deform the sealing plate 604 upward to block the first coupling seat 603, meanwhile, the sealing plate 604 is pulled through the arrangement of the rubber connecting belt 607, so that the situation that the sealing plate 604 is stressed too much and turns outwards to cause liquid medicine backflow is avoided.

Although embodiments of the present invention have been shown and described, it is intended that the present invention should not be limited thereto, that the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples, and that modifications, substitutions, variations or the like, which are not inventive and may be made by those skilled in the art without departing from the principle and spirit of the present invention and without departing from the scope of the claims.

Claims

1. An adjustable needleless infusion joint comprises a male end (1), and is characterized in that: the inside of positive end (1) is provided with adjusting part (7), the inside below of positive end (1) is provided with internal thread (5), the top of positive end (1) is connected with connector (2), the top of connector (2) is connected with negative end (3), the surface top of negative end (3) is connected with external screw thread (4), the inside of negative end (3) is provided with seal assembly (6).

2. The adjustable needle-free infusion joint according to claim 1, wherein: seal assembly (6) including connect in sealing member (601) of connector (2) surface, connect in the inside hollow rubber sleeve (602) of negative end (3) and connect in first connecting seat (603) of negative end (3) inside below, the inside both sides of sealing member (601) have all been seted up and have been kept away dead slot (606), the internal connection of hollow rubber sleeve (602) has elasticity ring (605) that resets, the inside both sides of first connecting seat (603) all are connected with closing plate (604), two the bottom of closing plate (604) all is connected with rubber connection area (607).

3. The adjustable needle-free infusion joint according to claim 1, wherein: the adjusting assembly (7) comprises a rotating rod (702) connected to one side of the interior of the male end (1) and a second connecting seat (704) connected to the interior of the male end (1), the outer surface of the rotating rod (702) is connected with a cam (701), the outer surface of the cam (701) is provided with an anti-slip strip (705), and the top of the second connecting seat (704) is connected with an elastic hose (703).

4. The adjustable needle-free infusion joint according to claim 2, wherein: one side of the sealing plate (604) inclines downwards along the middle direction in the first connecting seat (603), and the lower part in the first connecting seat (603) is in a slope shape.

5. The adjustable needle-free infusion joint according to claim 3, wherein: the cam (701) is rotatably connected with the male end (1) through a rotating rod (702), and the second connecting seat (704) is detachably connected with the male end (1).

6. The adjustable needle-free infusion joint according to claim 4, wherein: the included angle between the rubber connecting bands (607) and the sealing plate (604) is 45 degrees, and the two sealing plates (604) and the two rubber connecting bands (607) are distributed in a mirror image mode along the center line of the longitudinal axis of the first connecting seat (603).

7. The adjustable needle-free infusion joint according to claim 1, wherein: the male end (1) is in threaded connection with the connector (2), and the female end (3) is detachably connected with the connector (2).

8. The adjustable needle-free infusion joint according to claim 2, wherein: the elastic reset ring (605) is in a spiral shape, and the first connecting seat (603) is in threaded connection with the connecting head (2).