CN101829370A - One-way valve for hemodialysis machine - Google Patents

One-way valve for hemodialysis machine Download PDF

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Publication number
CN101829370A
CN101829370A CN 201010178104 CN201010178104A CN101829370A CN 101829370 A CN101829370 A CN 101829370A CN 201010178104 CN201010178104 CN 201010178104 CN 201010178104 A CN201010178104 A CN 201010178104A CN 101829370 A CN101829370 A CN 101829370A
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China
Prior art keywords
joint
connection block
way valve
rib
hemodialysis machine
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CN 201010178104
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CN101829370B (en
Inventor
高光勇
彭佑铭
任应祥
刘智勇
滕朝宇
刘旭东
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SWS HEMODIALSIS CARE CO., LTD.
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Chongqing Shanwaishan Science & Technology Co Ltd
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Abstract

The invention discloses a one-way valve for a hemodialysis machine, comprising a first joint (1) and a second joint (2), wherein both the first joint (1) and the second joint (2) are through-pipe structures; the opposite ends of the first joint (1) and the second joint (2) are respectively provided with a first connecting seat (1a) and a second connecting seat (2a), the first joint (1) and the second joint (2) are fixed together through the two connecting seats (1a, 2a), and the inner cavities of the first connecting seat (1a) and the second connecting seat (2a) form the valve cavity of the one-way valve; and the valve cavity is internally provided with a diaphragm (3) limited by the cavity wall of the first connecting seat (1a) and a rib plate (2b) inside the second connecting seat (2a). The one-way valve has simple structure, easy processing and manufacture, low cost, good reliability and high sensitivity, and because the one-way valve is made of medical rubber and plastics, the one-way valve has good biological property and cannot pollute medical fluid.

Description

A kind of one-way valve for hemodialysis machine
Technical field
The present invention relates to haemodialysis control unit, particularly the check valve on the haemodialysis control unit.
Background technology
Check valve is the vitals on the haemodialysis control unit, plays control liquid one-way flow.At present, the check valve that uses on the haemodialysis control unit generally adopts metal spring to make, and gets rusty easily on the one hand, and metal ion pollutes medical fluid easily; On the other hand, complex structure, the cost of manufacture height easily can't operate as normal because of spring failure in the process of using.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of haemodialysis control unit check valve simple and reliable for structure.
Technical scheme of the present invention is as follows: a kind of one-way valve for hemodialysis machine, have first joint and second joint, this first, second joint is through-pipe structure, be respectively arranged with first, second Connection Block in the opposite end of first, second joint, described first, second joint is fixed together by two Connection Blocks, the inner chamber of two Connection Blocks is formed the valve pocket of check valve, in this valve pocket diaphragm is installed, described diaphragm is spacing jointly by the chamber wall and the gusset in second Connection Block of first Connection Block.
Adopt above technical scheme, gusset combined effect in the chamber wall of first Connection Block and second Connection Block, diaphragm is unidirectional opens in control, liquid can only be flowed from the direction of first joint to second joint, prevented that effectively liquid from refluxing from second joint toward first joint, so not only simple in structure, cost of manufacture is cheap, and good reliability, long service life.
The inner chamber of described first Connection Block is taper, and the maximum end of this taper is towards second Connection Block.First Connection Block adopts inner conical surface and diaphragm-operated edge mate, and good airproof performance is highly sensitive.
Described gusset is made up of equally distributed rib on the circumference, and this rib is " V " type, and the small end of rib links to each other with the inwall of second Connection Block, and the big end of each rib links together.Above structure liquid from first joint when second joint flows, the middle part of diaphragm-operated middle part and gusset is close to, diaphragm-operated edge direction towards the gusset edge under the impact of liquid is out of shape, and makes liquid can enter in second joint smoothly; When liquid from second joint when first joint flows, the pressure of liquid is close to the inwall of the diaphragm and first Connection Block, has prevented that effectively liquid from entering in first joint.
For simplified structure, convenient processing, the described gusset and second Connection Block are structure as a whole.
In order further to improve the reliability and the sensitivity of unidirectional control, the connecting place of each rib has circular hole in the middle part of described gusset, and each rib is provided with the rectangle cylindrical void, and described rectangle cylindrical void is communicated with circular hole.
Described first joint and second joint are all by injection mo(u)lding, and biology performance is good like this, can not get rusty.
Beneficial effect: the present invention is simple in structure, handling ease, with low cost, good reliability, highly sensitive, and adopts medical grade rubber and plastic production, and biology performance is good, can not pollute medical fluid.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figure 1 and Figure 2, check valve of the present invention is made of first joint 1, second joint 2 and diaphragm 3, and wherein the material of first, second joint 1,2 is preferably plastics, by injection mo(u)lding, also can be metal or other material that is fit to, and the material of diaphragm 3 be a medical grade rubber.Described first, second joint 1,2 is through-pipe structure, end at first joint, 1 close second joint 2 is formed with the first Connection Block 1a, the outline of this first Connection Block 1a is circular, the inner chamber of the first Connection Block 1a is taper, the smallest end of taper communicates with the endoporus of first joint, 1 body portion, the maximum end of taper is uncovered, and is positioned at the end face of the first Connection Block 1a, and towards second joint 2.End at described second joint, 2 close first joints 1 is formed with the second Connection Block 2a, and the outline of the second Connection Block 2a also is circular, and the shape size adapts with the first Connection Block 1a.The inner chamber of the second Connection Block 2a is made up of straight section and awl section, the uncovered end face of straight section, and straight section links to each other with the stub end of awl section at the second Connection Block 2a, and the little head end of boring section communicates with the endoporus of second joint, 2 body portion.
From Fig. 1, Fig. 2 as can be known, be provided with gusset 2b in the inner chamber of second joint, 2 second Connection Block 2a, this gusset 2b is made up of equally distributed a plurality of ribs on the circumference, and this rib is " V " type, the inwall of the small end of rib and the second Connection Block 2a is connected as a body, and the big end of each rib links together.Connecting place at each rib of gusset 2b middle part has circular hole 2c, and each rib is provided with rectangle cylindrical void 2d, and rectangle cylindrical void 2d is circularly and evenly distributed in the periphery of circular hole 2c, and rectangle cylindrical void 2d is communicated with circular hole 2c.Described first, second joint 1,2 connects by two Connection Block 1a, 2a and is fixed together, the inner chamber of two Connection Block 1a, 2a is formed the valve pocket of check valve, diaphragm 3 is installed in this valve pocket, fit in the middle part of the middle part of described diaphragm 3 and gusset 2b, the edge of diaphragm 3 reclines mutually with the chamber wall of the first Connection Block 1a.
Operation principle of the present invention is as follows:
When liquid from first joint 1 when second joint 2 flows, the middle part of the middle part of diaphragm 3 and gusset 2b is close to, the edge of diaphragm 3 direction towards gusset 2b edge under the impact of liquid is out of shape, produce the gap between the chamber wall of the edge of diaphragm 3 and the first Connection Block 1a like this, liquid enters the inner chamber of the second Connection Block 2a from this gap, and flows by the body portion of the hole on the gusset 2b to second joint 2; When liquid from second joint 2 when first joint 1 flows, the pressure of liquid is close to the inwall of the diaphragm 3 and the first Connection Block 1a, with the endoporus shutoff of first joint 1, has prevented that effectively liquid from entering in first joint 1.

Claims (6)

1. one-way valve for hemodialysis machine, it is characterized in that: described check valve has first joint (1) and second joint (2), this is first years old, second joint (1,2) be through-pipe structure, first, second joint (1,2) opposite end is respectively arranged with first, second Connection Block (the 1a, 2a), described first, second joint (1,2) by two Connection Block (1a, 2a) be fixed together, two Connection Block (1a, inner chamber 2a) is formed the valve pocket of check valve, diaphragm (3) is installed in this valve pocket, and described diaphragm (3) is spacing jointly by the chamber wall and the gusset (2b) in second Connection Block (2a) of first Connection Block (1a).
2. one-way valve for hemodialysis machine according to claim 1 is characterized in that: the inner chamber of described first Connection Block (1a) is taper, and the maximum end of this taper is towards second Connection Block (2a).
3. one-way valve for hemodialysis machine according to claim 1 and 2, it is characterized in that: described gusset (2b) is made up of equally distributed rib on the circumference, this rib is " V " type, and the small end of rib links to each other with the inwall of second Connection Block (2a), and the big end of each rib links together.
4. one-way valve for hemodialysis machine according to claim 3 is characterized in that: described gusset (2b) and second Connection Block (2a) are structure as a whole.
5. one-way valve for hemodialysis machine according to claim 3 is characterized in that: the connecting place at each rib of described gusset (2b) middle part has circular hole (2c), and each rib is provided with rectangle cylindrical void (2d), and described rectangle cylindrical void (2d) is communicated with circular hole (2c).
6. according to claim 1 or 2 or 4 or 5 described one-way valve for hemodialysis machine, it is characterized in that: described first joint (1) and second joint (2) are all by injection mo(u)lding.
CN2010101781043A 2010-05-20 2010-05-20 One-way valve for hemodialysis machine Active CN101829370B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010101781043A CN101829370B (en) 2010-05-20 2010-05-20 One-way valve for hemodialysis machine

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Application Number Priority Date Filing Date Title
CN2010101781043A CN101829370B (en) 2010-05-20 2010-05-20 One-way valve for hemodialysis machine

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CN101829370A true CN101829370A (en) 2010-09-15
CN101829370B CN101829370B (en) 2012-05-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106421943A (en) * 2016-11-11 2017-02-22 陶崇林 Negative pressure drainage apparatus
CN112933315A (en) * 2021-02-01 2021-06-11 温州医科大学附属第二医院（温州医科大学附属育英儿童医院） Pressure regulating device for hemodialysis machine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827456A (en) * 1970-08-21 1974-08-06 W Sheppard Fluid valves
US4141379A (en) * 1977-05-16 1979-02-27 Cutter Laboratories, Inc. Check valve
US4762149A (en) * 1986-11-05 1988-08-09 Pickl Jr Joseph Double seal press assembled check valve
US5992462A (en) * 1998-10-28 1999-11-30 Vernay Laboratories, Inc. Disc type check valve
CN201088780Y (en) * 2007-09-05 2008-07-23 Amsino医疗集团控股有限公司 Unidirectional positive pressure valve
WO2008146144A2 (en) * 2007-05-29 2008-12-04 Haemotronic Advanced Medical Technologies S.P.A. Kit for the extracorporeal treatment of a biological fluid of a patient, and unit provided with said kit
CN201668873U (en) * 2010-05-20 2010-12-15 重庆山外山科技有限公司 One-way valve for haemodialysis control unit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827456A (en) * 1970-08-21 1974-08-06 W Sheppard Fluid valves
US4141379A (en) * 1977-05-16 1979-02-27 Cutter Laboratories, Inc. Check valve
US4762149A (en) * 1986-11-05 1988-08-09 Pickl Jr Joseph Double seal press assembled check valve
US5992462A (en) * 1998-10-28 1999-11-30 Vernay Laboratories, Inc. Disc type check valve
WO2008146144A2 (en) * 2007-05-29 2008-12-04 Haemotronic Advanced Medical Technologies S.P.A. Kit for the extracorporeal treatment of a biological fluid of a patient, and unit provided with said kit
CN201088780Y (en) * 2007-09-05 2008-07-23 Amsino医疗集团控股有限公司 Unidirectional positive pressure valve
CN201668873U (en) * 2010-05-20 2010-12-15 重庆山外山科技有限公司 One-way valve for haemodialysis control unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106421943A (en) * 2016-11-11 2017-02-22 陶崇林 Negative pressure drainage apparatus
CN106421943B (en) * 2016-11-11 2018-10-19 陶崇林 Depression drainage device
CN112933315A (en) * 2021-02-01 2021-06-11 温州医科大学附属第二医院（温州医科大学附属育英儿童医院） Pressure regulating device for hemodialysis machine

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Denomination of invention: One-way valve for hemodialysis machine

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