阅读说明：本技术 鸭嘴阀及使用该鸭嘴阀的穿刺器 (Duckbill valve and puncture outfit using same ) 是由 羌立忠 于 2019-08-29 设计创作，主要内容包括：本发明公开了一种鸭嘴阀及使用该鸭嘴阀的穿刺器,包括：外阀体,以及嵌套在外阀体内部的内阀体组；其中外阀体包括一体相连的外支撑部和外鸭嘴部,在支撑部形成有外进口,以及在外鸭嘴部形成与外进口贯通的外出口；内阀体组包括相向设置且适于抵接配合的第一内阀体和第二内阀体；第一内阀体和第二内阀体适于抵接围合形成有相连的内支撑部和内鸭嘴部,在内支撑部形成有内进口,以及在内鸭嘴部形成有适于被撑开的且与内进口贯通的内出口；在内阀体组嵌装在外阀体内中后,内出口适于伸出在外出口背离外进口的外侧。本发明的鸭嘴阀可以有效兼顾复位状态下的刚度需求和随着穿刺针杆等手术器械活动时的随动性能。(The invention discloses a duckbill valve and a puncture outfit using the duckbill valve, comprising: the outer valve body and the inner valve body group are nested in the outer valve body; the outer valve body comprises an outer supporting part and an outer duck bill which are integrally connected, an outer inlet is formed on the supporting part, and an outer outlet communicated with the outer inlet is formed on the outer duck bill; the inner valve body group comprises a first inner valve body and a second inner valve body which are arranged in opposite directions and are suitable for butt joint; the first inner valve body and the second inner valve body are suitable for being abutted and enclosed to form an inner supporting part and an inner duck mouth part which are connected, an inner inlet is formed in the inner supporting part, and an inner outlet which is suitable for being spread and is communicated with the inner inlet is formed in the inner duck mouth part; after the inner valve body group is embedded in the outer valve body, the inner outlet is suitable for extending out of the outer outlet and deviates from the outer inlet. The duckbill valve can effectively meet the rigidity requirement in the reset state and the follow-up performance along with the movement of surgical instruments such as a puncture needle rod and the like.)

1. a duckbill valve, comprising: the outer valve body and the inner valve body group are nested inside the outer valve body; wherein

the outer valve body comprises an outer supporting part and an outer duck bill part which are integrally connected, an outer inlet is formed in the supporting part, and an outer outlet communicated with the outer inlet is formed in the outer duck bill part;

The inner valve body group comprises a first inner valve body and a second inner valve body which are arranged oppositely and are suitable for being abutted and matched; the first inner valve body and the second inner valve body are suitable for being abutted and enclosed to form an inner supporting part and an inner duck mouth part which are connected, an inner inlet is formed in the inner supporting part, and an inner outlet which is suitable for being spread and is communicated with the inner inlet is formed in the inner duck mouth part;

after the inner valve body group is embedded in the outer valve body, the inner outlet is suitable for extending out of the outer outlet and departs from the outer inlet.

2. A duckbill valve according to claim 1 wherein said first inner valve body comprises integrally connected first inner support portion and first inner duckbill portion; a first wing folding part is formed at the end part of the first inner duckbill part deviating from the first inner supporting part in a bending way;

the second inner valve body comprises a second inner supporting part and a second inner duck bill part which are integrally connected; a second flap part is formed by bending the end part of the second inner duckbill part departing from the second inner supporting part;

When the first inner valve body and the second inner valve body are abutted, the second flap part and the first flap part are abutted to form the inner outlet which is suitable for being expanded;

The first flap part and the second flap part are suitable for partially extending out of the outer outlet far away from the outer inlet after being abutted against each other.

3. a duckbill valve according to claim 2 wherein said first and second inner support portions are symmetrically disposed, said first and second inner duckbills being symmetrically disposed; and

The first flap part and the second flap part are symmetrically arranged.

4. a duckbill valve according to claim 2 wherein said first and second inner support portions are symmetrically disposed, said first and second inner duckbills being symmetrically disposed; and

The side end face of the first flap part, which is suitable for being abutted against the second flap part, is a slightly convex arc surface, and correspondingly, the side end face of the second flap part, which is suitable for being abutted against the first flap part, is a slightly concave arc surface;

When the first wing part is connected with the second wing part in a butting mode, the convex arc surface is connected with the concave arc surface in a butting mode, and the convex arc surface is compressed and deformed under the action of the concave arc surface in a butting mode.

5. a duckbill valve according to any of claims 3 or 4 wherein said first inner support portion comprises a first connection to said first inner duckbill portion, a first eversion portion connected to said first connection and turned away from a line of symmetry of said first inner duckbill portion and said second inner duckbill portion, and a first protrusion connected to said first eversion portion and turned towards a plane of said inner outlet;

The second inner supporting part comprises a second connecting part connected with the second inner duck bill part, a second outer turning part connected with the second connecting part and turned towards the direction deviating from the symmetrical line of the second inner duck bill part and the second inner duck bill part, and a second protruding part bent and connected towards the plane of the inner outlet from the second outer turning part; and

the outer supporting part comprises an outer connecting part connected with the outer duck bill part, a turnover part connected with the outer connecting part and turned over towards the direction deviating from the symmetry line direction of the first inner duck bill part and the second inner duck bill part, and a clamping part bent and connected with the turnover part towards the plane where the inner outlet is located, the clamping interface of the clamping part faces towards the first protruding part and the second protruding part, and the first protruding part and the second protruding part are suitable for being clamped and assembled in the clamping part;

After the inner valve body group is embedded in the outer valve body, the outer duckbill part is suitable for being simultaneously abutted with the first inner duckbill part and the second inner duckbill part, the outer connecting part is suitable for being simultaneously abutted with the first inner connecting part and the second inner connecting part, and the folded part is suitable for being simultaneously abutted with the first outward turning part and the second outward turning part.

6. A duckbill valve according to claim 5 wherein the side end surface of said first flap facing away from said inner outlet is formed with a first obtuse angled configuration with the side end surface of said first inner duckbill facing toward said outer duckbill portion;

and a second obtuse angle structure is formed between the side end surface of the second folding wing, which is deviated from the inner outlet, and the side end surface of the second inner duckbill part, which is towards the outer duckbill part.

7. A duckbill valve according to claim 6 wherein said first obtuse angled structure is the same size as said second obtuse angled structure.

8. a duckbill valve according to claim 5 wherein said first inner duckbill and first flap portion are formed of the same material as said second inner duckbill and second flap portion; and

The rigidity of the material forming the first inner duck-bill portion and the first flap portion is greater than the rigidity of the material forming the outer duck-bill portion.

9. a duckbill valve according to claim 5 wherein the end surfaces of said first and second flap portions abutting each other are of smooth-faced construction.

10. A puncture instrument, comprising: a duckbill valve according to any of claims 1 to 9.

Technical Field

the invention relates to the technical field of one-way valves, in particular to a duckbill valve and a puncture outfit using the duckbill valve.

Background

the duckbill valve is a one-way valve structure commonly called as a rubber blowdown check valve, also called as a back pressure type flexible check valve, a duckbill valve check valve, a rubber slow-closing check valve and the like. Duckbill valves are widely used in conduits, such as cement or glass tubing or other types of products adapted to block one-way flow of water, such as medical piercers.

Duckbill valves are specially manufactured from materials such as, but not limited to, elastic neoprene plus rayon, and are shaped like a duckbill, so called duckbill valves. Generally, the duckbill outlet of the duckbill valve in the prior art is a strip-shaped duckbill outlet which is generated on the integral duckbill valve through a cutting process and is suitable for being opened by external force such as liquid pressure or a pointed conical component. The duckbill outlet produced by the process is essentially required to be closed (without interference fit) after the external force is removed by means of the elastic resetting capacity of the material of the duckbill valve. The memory effect often appears after the open state for a long time, and the outlet is not closed in place after the positive external force disappears.

Under the condition of no internal pressure, the duckbill outlet is closed under the self elastic action; along with the internal pressure gradually increases, the duckbill outlet gradually increases, and the liquid can be discharged at a high flow rate, or the duckbill outlet is opened by inserting a pointed cone-shaped article (for example, when the duckbill valve is used in a puncture outfit, a pointed cone-shaped puncture needle rod and other surgical instruments need to pass through the duckbill outlet of the duckbill valve), and the duckbill outlet can be used as a water flow stop under the closed condition, and can also be used as a gas seal.

In the in-process that resets in duckbill valve export, for example, with the puncture ware, after the puncture needle (surgical instruments) pole passed the duckbill export of duckbill valve, along with the activity of surgical instruments such as puncture needle bar, surgical instruments such as puncture needle bar can produce certain supporting effect to the both sides wall of the duckbill export of duckbill valve, the both sides wall of the duckbill export of the duckbill valve that is strutted this moment need realize inclosed in order to guarantee that the gas tightness needs to support the both sides wall of duckbill export and have certain rigidity requirement, provide sufficient effort that resets by certain rigidity. However, the elasticity of the two side walls of the duckbill outlet is reduced (the pressure is increased) due to certain rigidity requirements, so that the resistance of the puncture needle rod and other surgical instruments during movement is increased, and the smoothness of the movement of the puncture needle rod and other surgical instruments is reduced due to the increase of the resistance. Therefore, here both will satisfy the reset effort that duckbilled export needs when reseing closed, reduce the resistance when two lateral walls of duckbilled export move about to surgical instruments such as puncture needle bar again and also improve the smooth and easy degree when surgical instruments such as puncture needle bar, and the duckbilled valve of conventional use is difficult to realize among the prior art.

disclosure of Invention

the invention provides a duckbill valve, which aims to solve the technical problem that the duckbill valve keeps good reset effect and simultaneously has elasticity following property when being reset.

The second purpose of the invention is to provide a puncture outfit, which solves the technical problem that the duckbill valve keeps good reset effect and simultaneously takes into account the elasticity following property when resetting.

The duckbill valve of the present invention is implemented as follows:

A duckbill valve comprising: the outer valve body and the inner valve body group are nested inside the outer valve body; wherein

The outer valve body comprises an outer supporting part and an outer duck bill part which are integrally connected, an outer inlet is formed in the supporting part, and an outer outlet communicated with the outer inlet is formed in the outer duck bill part;

the inner valve body group comprises a first inner valve body and a second inner valve body which are arranged oppositely and are suitable for being abutted and matched; the first inner valve body and the second inner valve body are suitable for being abutted and enclosed to form an inner supporting part and an inner duck mouth part which are connected, an inner inlet is formed in the inner supporting part, and an inner outlet which is suitable for being spread and is communicated with the inner inlet is formed in the inner duck mouth part;

After the inner valve body group is embedded in the outer valve body, the inner outlet is suitable for extending out of the outer outlet and departs from the outer inlet.

In a preferred embodiment of the present invention, the first inner valve body comprises a first inner support part and a first inner duck mouth part which are integrally connected; a first wing folding part is formed at the end part of the first inner duckbill part deviating from the first inner supporting part in a bending way;

the second inner valve body comprises a second inner supporting part and a second inner duck bill part which are integrally connected; a second flap part is formed by bending the end part of the second inner duckbill part departing from the second inner supporting part;

When the first inner valve body and the second inner valve body are abutted, the second flap part and the first flap part are abutted to form the inner outlet which is suitable for being expanded;

the first flap part and the second flap part are suitable for partially extending out of the outer outlet far away from the outer inlet after being abutted against each other.

In a preferred embodiment of the invention, the first inner supporting part and the second inner supporting part are symmetrically arranged, and the first inner duck bill part and the second inner duck bill part are symmetrically arranged; and

the first flap part and the second flap part are symmetrically arranged.

in a preferred embodiment of the invention, the first inner supporting part and the second inner supporting part are symmetrically arranged, and the first inner duck bill part and the second inner duck bill part are symmetrically arranged; and

The side end face of the first flap part, which is suitable for being abutted against the second flap part, is a slightly convex arc surface, and correspondingly, the side end face of the second flap part, which is suitable for being abutted against the first flap part, is a slightly concave arc surface;

When the first wing part is connected with the second wing part in a butting mode, the convex arc surface is connected with the concave arc surface in a butting mode, and the convex arc surface is compressed and deformed under the action of the concave arc surface in a butting mode.

In a preferred embodiment of the present invention, the first inner support portion comprises a first connecting portion connected with the first inner duckbill portion, a first outer turnover portion connected with the first connecting portion and turned towards a direction away from a symmetry line of the first inner duckbill portion and the second inner duckbill portion, and a first protruding portion connected with the first outer turnover portion and bent towards a plane where the inner outlet is located;

The second inner supporting part comprises a second connecting part connected with the second inner duck bill part, a second outer turning part connected with the second connecting part and turned towards the direction deviating from the symmetrical line of the second inner duck bill part and the second inner duck bill part, and a second protruding part bent and connected towards the plane of the inner outlet from the second outer turning part; and

The outer supporting part comprises an outer connecting part connected with the outer duck bill part, a turnover part connected with the outer connecting part and turned over towards the direction deviating from the symmetry line direction of the first inner duck bill part and the second inner duck bill part, and a clamping part bent and connected with the turnover part towards the plane where the inner outlet is located, the clamping interface of the clamping part faces towards the first protruding part and the second protruding part, and the first protruding part and the second protruding part are suitable for being clamped and assembled in the clamping part;

after the inner valve body group is embedded in the outer valve body, the outer duckbill part is suitable for being simultaneously abutted with the first inner duckbill part and the second inner duckbill part, the outer connecting part is suitable for being simultaneously abutted with the first inner connecting part and the second inner connecting part, and the folded part is suitable for being simultaneously abutted with the first outward turning part and the second outward turning part.

In a preferred embodiment of the invention, a side end face of the first folding wing facing away from the inner outlet and a side end face of the first inner duckbill part facing towards the outer duckbill part form a first obtuse angle structure;

And a second obtuse angle structure is formed between the side end surface of the second folding wing, which is deviated from the inner outlet, and the side end surface of the second inner duckbill part, which is towards the outer duckbill part.

in a preferred embodiment of the present invention, the first obtuse angle structure and the second obtuse angle structure have the same size.

in a preferred embodiment of the present invention, the first inner duck-bill portion and the first flap portion are made of the same material as the second inner duck-bill portion and the second flap portion; and

the rigidity of the material forming the first inner duck-bill portion and the first flap portion is greater than the rigidity of the material forming the outer duck-bill portion.

in a preferred embodiment of the present invention, the end surfaces of the first flap portion and the second flap portion abutting against each other are all smooth surface structures.

The puncture outfit of the invention is realized by the following steps:

A puncture instrument, comprising: the duckbill valve.

by adopting the technical scheme, the invention has the following beneficial effects: compared with the traditional duckbill valve with a single integral structure, the duckbill valve comprises an outer valve body and an inner valve body which are connected in a nested manner, the inner valve body group comprises a first inner valve body and a second inner valve body which are suitable for being abutted and matched, namely, the first inner valve body and the second inner valve body are not fixedly connected but are embedded in the outer valve body to realize the contact relationship between the first inner valve body and the second inner valve body, the contact relationship enables the inner outlets formed by the first inner valve body and the second inner valve body to be rapidly closed and the air tightness after the inner outlets are closed to be good even if the first inner valve body and the second inner valve body are made of materials with good rigidity, when surgical instruments such as a puncture needle bar of the puncture device and the like are withdrawn from the duckbill valve, the good rigidity between the first inner valve body and the second inner valve body enables the inner outlets to be rapidly closed, and the air tightness after the inner outlets are good, and meanwhile, the good rigidity of the first inner valve body and the second inner valve body does not form great, because there is not absolute fixed connection relation between the two, both are limited by the elasticity of outer valve body itself, on the basis of keeping the good elasticity of outer valve body, first inner valve body and second inner valve body also can produce along with the outer valve body for good followability that surgical instruments such as puncture needle bar formed, and then make the activity of surgical instruments such as puncture needle bar smooth and easy, and outer valve body disappears after surgical instruments such as puncture needle bar withdraw from along with the followability of surgical instruments such as puncture needle bar, first inner valve body and second inner valve body rely on respective independent rigidity to realize restoring to under the initial inseparable butt cooperation state at this moment, thereby keep the good gas tightness of interior export.

Drawings

figure 1 is a schematic view of a duckbill valve according to the present invention in a first configuration;

figure 2 is a schematic view of a duckbill valve according to the present invention in a second configuration;

FIG. 3 is a schematic view of the exploded assembly of the outer and inner valve bodies of the duckbill valve of the present invention;

Figure 4 is a schematic view of the overall structure of the internal valve body assembly of the duckbill valve of the present invention;

Figure 5 is a schematic view of the exploded configuration of the first and second inner valve bodies of the inner valve body set of the duckbill valve of the present invention;

figure 6 is a schematic view of the overall structure of the outer valve body of the duckbill valve of the present invention;

Figure 7 is a schematic view of a third perspective view of the duckbill valve of the present invention;

Fig. 8 is a sectional view taken along line a of fig. 7.

in the figure: the external inlet 1, the external outlet 2, the internal inlet 3, the first internal support 101, the first connection 1011, the first eversion 1012, the first protrusion 1013, the first internal duckbill 102, the first flap 103, the second internal support 201, the second connection 2011, the second eversion 2012, the second protrusion 2013, the second internal duckbill 202, the second flap 203, the external support 301, the external duckbill 302, the inclined surface 3021, the external connection 3011, the eversion 3012, and the clamping portion 3013.

Detailed Description

in order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.