CN114082040A

CN114082040A - Infusion needleless connector with positive pressure elastic valve

Info

Publication number: CN114082040A
Application number: CN202111186115.0A
Authority: CN
Inventors: 金松涛; 陈俊杰
Original assignee: Hangzhou Meike Henghui Industrial Co ltd
Current assignee: Hangzhou Meike Henghui Industrial Co ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-02-25

Abstract

The invention discloses an infusion needleless connector with a positive pressure elastic valve, which comprises a connector body and a positive pressure valve which is arranged in the connector body and is made of a high polymer elastic material, wherein the positive pressure valve comprises an upper base part, a lower base part, a deformation cavity arranged in the upper base part and an air cavity arranged on the inner side of the lower base part. According to the invention, the joint body and the positive pressure valve are arranged, so that the joint does not need to be replaced during infusion, the pain of a patient is reduced, the first arc-shaped part, the second arc-shaped part and the third arc-shaped part face to the same side, the upper part of the deformation cavity is narrow and the lower part of the deformation cavity is wide, the positive pressure valve can be conveniently folded, the stress directions of all parts of the first arc-shaped part, the second arc-shaped part and the third arc-shaped part are different, the resilience performance of the positive pressure valve is improved, and the sealing effect of the positive pressure valve is improved.

Description

Infusion needleless connector with positive pressure elastic valve

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an infusion needleless connector with a positive pressure elastic valve.

Background

The needleless connector is widely applied to clinical infusion, the mode of the needleless connector can avoid the secondary insertion of the pillow, the repeated puncture of the infusion needle can be avoided, and the pain of a patient is reduced.

The valve body structural design that current needleless infusion connects adopted is reasonable inadequately, and the valve body can not reset completely after repetitious usage, can lead to needleless connector weeping, unable repetitious usage, when external infusion connects and needleless connector breaks away from, the condition that the malleation is not enough appears in the easy, causes blood to flow back to the pipe easily, if the time overlength blood solidifies easily, causes the pipe easily to block up, can appear the problem of unable normal infusion.

Disclosure of Invention

The invention provides an infusion needleless connector with a positive pressure elastic valve to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an infusion needleless connector with malleation elasticity valve, includes the joint body and locates the positive pressure valve that the inside polymer elastic material that adopts of joint body made, positive pressure valve includes basal portion, lower basal portion, locates the inside deformation chamber of basal portion and locates the inboard air chamber of basal portion down, deformation chamber and air chamber intercommunication, the deformation chamber is including being located the supporting part of keeping away from last basal portion axis one side, locating the rake at supporting part top, locating the first arc portion of rake opposite side, locating the second arc portion of first arc portion bottom and locating the third arc portion of second arc portion bottom, smooth transition each other between first arc portion, second arc portion and the third arc portion, the opening of second arc portion is towards the outside of last basal portion, the cross-sectional area top-down that the deformation chamber increases gradually.

The invention can avoid replacing the joint during transfusion by arranging the joint body and the positive pressure valve, and reduce the pain of a patient, the positive pressure valve is made of high molecular elastic material, can ensure that the positive pressure valve can generate deformation, is convenient for the connection and the reset of an external joint, ensures that the interior of the joint body is sealed, the upper base part can generate deformation in a deformation cavity under stress, the lower base part is positioned in the joint body, the volume of the lower base part is larger than that of the upper base part, and can generate larger pressure in the joint body, thereby easily forming positive pressure, the lower base part is hollow by the air cavity, and is convenient for the deformation of the positive pressure valve, the upper base part can be supported by the supporting part, the inclined part and the entering direction of an external interface form a certain included angle, and the connection is convenient, the first arc part, the second arc part and the third arc part all face to the same side, and the upper part and the lower part of the deformation cavity are narrow and wide, so as to facilitate the folding of the positive pressure valve, stress directions of all parts of the first arc-shaped part, the second arc-shaped part and the third arc-shaped part are different, so that the resilience performance of the positive pressure valve is improved, and the sealing effect of the positive pressure valve is improved.

Preferably, a first notch is arranged on the outer wall of the lower base part and on one side close to the support part, and the first notch is spirally coiled on the outer wall of the lower base part; through setting up first incision, first incision is the heliciform, and is the half-turn at most, makes positive pressure valve can be along certain angle deformation, and the resilience performance of basal portion under the heliciform lower basal portion can further improve moreover.

Preferably, a second notch is arranged on the outer wall of the lower base part and on the side far away from the support part, the second notch is spirally coiled on the outer wall of the lower base part, the spiral direction of the second notch is the same as that of the first notch, the second notch and the first notch are arranged in a staggered mode in the vertical direction, and the width of the second notch is smaller than that of the first notch; through setting up the second incision, the deformation ability of positive pressure valve is further improved to second incision and first incision dislocation set, and second incision width is less than first incision, can make down the basic part mainly towards first incision direction deformation, and the second incision cooperatees with first incision and can make down the basic part in week upper portion deformation, and positive pressure valve after the deformation can increase and connect the clearance of body, makes things convenient for the liquid medicine circulation.

Preferably, the top of the upper base is provided with an upper surface which is inclined towards one side of the support part; through setting up the upper surface, can make the top slope of positive pressure valve, can make things convenient for the insertion of external interface, make positive pressure valve can directional deformation, can improve the area of contact of going up the basal portion top surface simultaneously, improve sealed effect.

Preferably, the outer ring of the upper surface is provided with a convex part extending outwards, and the convex part is oval; through setting up the convex part, the convex part is oval annular, can increase the area of contact of upper surface, further improves the sealed effect of positive pressure valve.

Preferably, the connector body comprises a shell arranged outside the positive pressure valve, an inner cavity arranged inside the shell and a luer connector arranged on one side of the shell far away from the upper base.

Preferably, the shell comprises a head part, a shoulder part and a belly part, a first sealing part with a matched upper surface is arranged on the inner side of the head part, the first sealing part is obliquely arranged, and a first gap is formed between the inner side of the head part and the upper base part; through setting up the shell, inner chamber and luer connect, the shell can protect positive pressure valve, positive pressure valve places in the inner chamber, and provide the space of deformation for positive pressure valve, luer connects the one side of installing and keeping away from the upper surface, the head can protect last basal portion, the belly is used for protecting lower basal portion, the deformation of basal portion is conveniently gone up to the shoulder, the outer lane contact of first sealing and convex part, improve the sealed effect that connects, first clearance can lead the liquid medicine, can form certain volumetric difference when positive pressure valve deformation, conveniently form the malleation.

Preferably, a first concave surface is arranged on the inner side of the shoulder part, and a second sealing part matched with the first concave surface is arranged on the upper base part; through setting up first concave surface and second sealing, can further improve positive pressure valve and connect the sealed effect between the body, second clearance and third clearance can form the volume chamber with the positive pressure valve outside, make positive pressure valve can in time kick-back.

Preferably, a second concave surface in smooth transition with the inner cavity is arranged below the first concave surface, a convex ring matched with the second concave surface is arranged on the lower base part, a second gap is formed between the inner side of the shoulder part and the lower part of the second sealing part, and a third gap is formed in the inner cavity at the lower part of the convex ring; through setting up second concave surface and bulge loop, can further improve the sealed effect of joint.

In conclusion, the invention can reduce the pain of patients without replacing the connector during transfusion, the positive pressure valve can facilitate the connection and the reset of an external connector, the sealing effect of a needleless connector is improved, larger pressure can be generated inside the connector body, so that positive pressure is easily formed, the air cavity enables the lower base part to be hollow, the deformation of the positive pressure valve is facilitated, the supporting part can support the upper base part, the inclined part and the external interface entering direction form a certain included angle, the connection is facilitated, the first arc-shaped part, the second arc-shaped part and the third arc-shaped part face to the same side, the deformation cavity is narrow at the top and wide at the bottom, the folding of the positive pressure valve is facilitated, the stress directions of all parts of the first arc-shaped part, the second arc-shaped part and the third arc-shaped part are different, the resilience performance of the positive pressure valve is improved, and the sealing effect of the positive pressure valve is improved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of the present invention.

Fig. 3 is a cross-sectional view a-a of fig. 2 according to the present invention.

FIG. 4 is a second cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention.

Fig. 5 is an enlarged view of the invention at a in fig. 4.

Fig. 6 is a schematic view of the positive pressure valve of the present invention.

Fig. 7 is a schematic view showing the structure of the external connector of the present invention after being inserted into a needleless connector.

Detailed Description

As shown in fig. 1-7, an infusion needleless connector with a positive pressure elastic valve comprises a connector body 1 and a positive pressure valve 2, wherein the positive pressure valve 2 comprises an upper base 21, a lower base 22, a deformation cavity 23 and an air cavity 24, the connector body 1 is made of hard medical plastics, the positive pressure valve 2 is made of high molecular elastic materials, the upper base 21 and the lower base 22 are integrally formed, the deformation cavity 23 is arranged inside the upper base 21, the air cavity 24 is located on the lower base 22, so that the lower base 22 forms a cylinder with a downward opening, the deformation cavity 23 is communicated with the air cavity 24, the positive pressure valve 2 can conveniently discharge internal gas in the deformation process, the deformation cavity 23 comprises a support part 231, an inclined part 232, a first arc part 233, a second arc part 234 and a third arc part 235, the first arc part 233, the second arc part 234 and the third arc part 235 are in smooth transition, the opening of second arc portion 234 is towards the outside of last base 21, the cross-sectional area top-down of deformation chamber 23 crescent, second arc portion 234 passes the axis of last base 21, supporting part 231, slope portion 232, first arc portion 233, deformation chamber 23 that second arc portion 234 and third arc portion 235 formed for last base 21 cutting, supporting part 231 can keep the form of last base 21, the slope portion 232 slope setting at top can make things convenient for the insertion of external interface, when external interface inserted or breaks away from positive pressure valve 2, first arc portion 233, the stress at each position of second arc portion 234 and third arc portion 235 is all different, can conveniently go up the reseing of base 21.

Specifically, the outer wall of lower basal portion 22 is equipped with first incision 221, and first incision 221 is located the one side that is close to supporting part 231, further enlarges the actual thickness of positive pressure valve 2 one side, can improve the deformability of positive pressure valve 2, and first incision 221 is whole to be the heliciform moreover, and the last plane of projection of first incision 221 is the third of basal portion 22 circumference down, makes positive pressure valve 2 only can follow certain angle deformation, can improve the resilience performance of positive pressure valve 2.

Further, the outer wall of the lower base 22 and the side away from the support portion 231 are provided with a second notch 222, the second notch 222 is spiral, the spiral direction of the second notch 222 is the same as that of the first notch 221, the second notch 222 is easy to deform when the external joint is inserted into the joint body 1, the second notch 222 and the first notch 221 are arranged in a staggered manner in the vertical direction, the width of the second notch 222 is smaller than that of the first notch 221, so that the lower base 22 can mainly deform the first notch 221 when deforming, and the resilience of the positive pressure valve 2 is improved.

Specifically, the top of the upper base 21 is provided with an upper surface 211, the upper surface 211 is integrally formed with the upper base 21, and the lower side of the upper surface 211 is inclined toward the support 231, so that the external connector can be more conveniently inserted into the connector body 1, and the upper base 21 is prevented from being pierced.

Furthermore, the outer ring of the upper surface 211 is provided with a convex portion 2111, the convex portion 2111 is elliptical and is integrally formed with the upper base portion 21, and the convex portion is located on the outer ring of the upper surface 211, so that when no external joint is inserted, a certain deformation can be generated between the annular convex portion 2111 and the joint body 1, and the sealing effect of the upper base portion 21 is improved.

Specifically, the connector body 1 includes a housing 11, an inner cavity 12 and a luer 13, the positive pressure valve 2 is installed in the inner cavity 12, the housing 11 can protect the positive pressure valve 2, the housing 11 is made of rigid medical plastics, the luer 13 can be purchased directly from the market, the housing 11 includes a head 111, a shoulder 112 and a belly 113, the head 111 can limit the upper base 21, the upper base 21 can seal the connector at the head 111, the head 111 is thin and can facilitate the insertion of an external connector, the lower base 22 is installed at the belly 113 and provides a space for the deformation of the upper base 21, when the external connector is inserted into the head 111, the upper base 21 can be deformed into the belly 113 to connect the connector, the shoulder 112 is located at the transition position between the upper base 21 and the lower base 22 to guide the restoration of the positive pressure valve 2, the first sealing part 14 is arranged on the inner side of the head 111, the first sealing portion 14 is obliquely arranged, the first sealing portion 14 is in contact with the annular convex portion 2111, the contact area between the convex portion 2111 and the head portion 111 is further increased, the sealing effect is improved, a first gap 15 is formed between the inner side of the head portion 111 and the upper base portion 21, the first gap 15 can provide a certain moving space for deformation of the upper base portion 21 and entering of the abdomen 113, and deformation and resetting of the positive pressure valve 2 are facilitated.

Further, the inboard of shoulder 112 is equipped with first concave surface 31, and the width of first concave surface 31 slightly is greater than head 111, go up and be equipped with second sealing portion 32 on the base 21, second sealing portion 32 and first concave surface 31 interference fit can form the second at first concave surface 31 and second sealing portion 32's position and seal, improve the sealed effect of this joint, shoulder 112 inboard and second sealing portion 32's below form second clearance 33, are located the inner chamber 12 of second sealing portion 32 outside lower part forms third clearance 34, and second clearance 33 and third clearance 34 can provide the activity space for the deformation of positive-pressure valve 2, and in the deformation process of positive-pressure valve 2, the volume of first clearance 15, second clearance 33 and third clearance 34 can constantly change, can conveniently form inside malleation.

Specifically, the second concave surface 41 is arranged below the first concave surface 31, the convex ring 42 is arranged on the lower base portion 22, the second concave surface 41 is arranged on the shoulder portion 112, the convex ring 42 and the positive pressure valve 2 are integrally formed, the convex ring 42 and the second concave surface 41 can seal the joint for the third time, and the sealing effect of the joint is further improved.

The specific working principle is as follows: when in use, the connector for external infusion is inserted into the inner cavity 12 from the head 111 of the housing 11 and rotates at a certain angle, at this time, because the upper surface 211 at the top of the upper base 21 is obliquely arranged, a certain gap is formed between the contact surface of the external connector and the upper surface 211, the external connector is prevented from being blocked by the upper base 21, then pressure is continuously applied to the external connector, the positive pressure valve 2 is gradually deformed and folded towards one side due to the pressure, meanwhile, the pressure is transmitted to the lower base 22, the lower base 22 is deformed and folded with the help of the first notch 221 and the second notch 222, as the external connector continuously goes deep, the upper base 21 moves downwards and is folded into the inner cavity 12 where the lower base 22 is located, so that, because the space of the inner cavity 12 of the abdomen 113 is relatively large, a larger dislocation is formed between the upper base 21 and the external connector, at this time, the first gap 15, the second gap 33 and the third gap 34 are communicated, thereby get through the infusion passageway, the infusion finishes or when needing to change dressings, the joint with outside infusion is unscrewed gradually, make outside infusion connect slowly and break away from with positive pressure valve 2, owing to lost the pressure of external joint this moment, be located the inside positive pressure valve 2 of shell 11 and can kick-back, the positive pressure valve 2 kick-backs completely, whole joint can resume the encapsulated situation before the use, the convex part 2111 of upper surface 211 outer lane can contact with first sealing 14, first clearance 15, second clearance 33 and third clearance 34 are separated again, the volume of inner chamber 12 is greater than the inner chamber 12 volume under the encapsulated situation behind the compression deformation, thereby form required malleation, thereby prevent the blood backward flow, avoid the health problem that the blood coagulation that leads to because of the not enough pressure of inner chamber 12 brought.

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims

1. The utility model provides an infusion needleless connector with malleation elasticity valve, includes and connects body (1) and locate and connect inside and adopt positive pressure valve (2) that polymer elastic material made of body (1), its characterized in that: the positive pressure valve (2) comprises an upper base (21), a lower base (22), a deformation cavity (23) arranged in the upper base (21) and an air cavity (24) arranged on the inner side of the lower base (22), the deformation cavity (23) is communicated with the air cavity (24), the deformation cavity (23) comprises a supporting part (231) which is positioned at one side far away from the central axis of the upper base part (21), an inclined part (232) which is arranged at the top of the supporting part (231), a first arc-shaped part (233) which is arranged at the other side of the inclined part (232), a second arc-shaped part (234) which is arranged at the bottom of the first arc-shaped part (233) and a third arc-shaped part (235) which is arranged at the bottom of the second arc-shaped part (234), the first arc-shaped part (233), the second arc-shaped part (234) and the third arc-shaped part (235) are in smooth transition, the opening of the second arc-shaped part (234) faces the outer side of the upper base part (21), and the cross-sectional area of the deformation cavity (23) is gradually increased from top to bottom.

2. The infusion needleless connector with the positive pressure elastic valve as claimed in claim 1, wherein: the outer wall of the lower base part (22) is provided with a first notch (221) at one side close to the supporting part (231), and the first notch (221) is spirally coiled on the outer wall of the lower base part (22).

3. The infusion needleless connector with the positive pressure elastic valve as claimed in claim 1, wherein: the outer wall of the lower base portion (22) is provided with a second notch (222) on one side far away from the supporting portion (231), the second notch (222) is spirally wound on the outer wall of the lower base portion (22), the spiral direction of the second notch (222) is the same as that of the first notch (221), the second notch (222) and the first notch (221) are arranged in a staggered mode in the vertical direction, and the width of the second notch (222) is smaller than that of the first notch (221).

4. The infusion needleless connector with the positive pressure elastic valve as claimed in claim 1, wherein: the top of the upper base (21) is provided with an upper surface (211), and the upper surface (211) is inclined toward one side of the support (231).

5. The infusion needleless connector with the positive pressure elastic valve as claimed in claim 4, wherein: the outer ring of the upper surface (211) is provided with a convex part (2111) extending outwards, and the convex part (2111) is oval.

6. The infusion needleless connector with the positive pressure elastic valve as claimed in claim 4, wherein: the connector body (1) comprises a shell (11) arranged on the outer side of the positive pressure valve (2), an inner cavity (12) arranged in the shell (11) and a luer connector (13) arranged on one side, far away from the upper base (21), of the shell (11).

7. The infusion needleless connector with the positive pressure elastic valve as claimed in claim 6, wherein: the shell (11) comprises a head part (111), a shoulder part (112) and a belly part (113), wherein a first sealing part (14) with an upper surface (211) matched with the inner side of the head part (111) is arranged, the first sealing part (14) is obliquely arranged, and a first gap (15) is formed between the inner side of the head part (111) and the upper base part (21).

8. The infusion needleless connector with the positive pressure elastic valve as claimed in claim 7, wherein: the inner side of the shoulder part (112) is provided with a first concave surface (31), and the upper base part (21) is provided with a second sealing part (32) matched with the first concave surface (31).

9. The infusion needleless connector with the positive pressure elastic valve as claimed in claim 7, wherein: a second concave surface (41) which is in smooth transition with the inner cavity (12) is arranged below the first concave surface (31), a convex ring (42) which is matched with the second concave surface (41) is arranged on the lower base part (22), a second gap (33) is formed between the inner side of the shoulder part (112) and the lower part of the second sealing part (32), and a third gap (34) is formed in the inner cavity (12) at the lower part of the convex ring (42).