CN211611069U - Transfusion joint with one-way valve structure - Google Patents
Transfusion joint with one-way valve structure Download PDFInfo
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- CN211611069U CN211611069U CN201922360646.1U CN201922360646U CN211611069U CN 211611069 U CN211611069 U CN 211611069U CN 201922360646 U CN201922360646 U CN 201922360646U CN 211611069 U CN211611069 U CN 211611069U
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- way valve
- cylindrical
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- joint
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A transfusion joint with a one-way valve structure comprises a cylindrical lower shell and a cylindrical upper shell, wherein a one-way valve sheet is arranged on the lower shell and is in threaded connection with the upper shell, a liquid inlet joint is fixed at the upper end of the upper shell, a liquid outlet joint is arranged at the lower end of the lower shell, the one-way valve sheet is arranged at the cross section of the cylindrical lower shell or the cylindrical upper shell and is a funnel-shaped rubber sheet, the outlet of a funnel is downward, the outer diameter of the one-way valve sheet is equal to the inner diameter of the cross section of the cylindrical lower shell or the cylindrical upper shell, and annular parallel convex hoops are arranged above and below the position, where the one-way valve sheet is arranged, on the inner wall of the cylindrical lower shell or the cylindrical upper shell; the distance between the upper and lower convex hoops is larger than the thickness of the edge of the valve sheet of the one-way valve (namely, the gap is 1-2 mm). The transfusion joint with the one-way valve structure has the function of preventing the backflow of blood after the transfusion is finished, and can also be provided with the structure of the utility model in the luer joint.
Description
Technical Field
The utility model relates to a medical transfusion one-way valve structure, in particular to a transfusion joint with a one-way valve structure.
Background
The infusion joint with the one-way valve structure is internally provided with a medical infusion one-way valve, and the main structures of the existing one-way valve and the like need a one-way pressure-resistant valve plate. The majority of the existing valve plates adopt a circular rubber sheet, the product of the circular rubber sheet produced by the applicant's mother company has long been produced, and the circular rubber sheet can be prepared by punching a low-cost rubber sheet, but the quality of the circular rubber sheet is not as good as that of a product vulcanized by a mold. The disc rubber sheet before the existing improvement is used, the one-way valve has insufficient pressure resistance and is easy to leak.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel transfusion joint with a one-way valve structure; prevent the blood flow with a large amount of vein positive pressure from flowing back into the transfusion tube when the transfusion (blood) is finished.
The technical scheme of the utility model is that, a transfusion joint with check valve structure, including cylindricality lower casing and cylindricality upper casing, the check valve piece, lower casing and upper casing pass through threaded connection, the upper end of upper casing is fixed the feed liquor joint, and the lower extreme of lower casing is for going out the liquid joint, the check valve piece is placed to the cross section department of cylindricality lower casing or upper casing, the check valve piece is a rubber sheet of infundibulate, the funnel export is downward, the external diameter of check valve piece equals the internal diameter of the cross section department of cylindricality lower casing or upper casing, and the top and the below of the position of placing the check valve piece on the cylindricality lower casing or upper casing inner wall all are equipped with the protruding hoop of annular parallel; the distance between the upper and lower convex hoops is larger than the thickness of the edge of the valve sheet of the one-way valve (namely, the gap is 1-2 mm). The lower bottom profile of funnel-shaped slightly takes curved shape, and the flare opening is up, and when the liquid drop is at the concave of check valve piece, then check valve piece has flagging tendency in the effect of liquid drop weight, then can make liquid flow out at the edge of valve block, increases stress structure on the shape and the structure of check valve piece, the one-way of the liquid of being convenient for on the shape passes through, and the reversal can not lead to sealed inefficacy problem, can seal gas. The transfusion joint with the one-way valve structure has the function of preventing the backflow of blood after the transfusion is finished, and can also be provided with the structure of the utility model in the luer joint.
The one-way valve sheet is a funnel-shaped rubber sheet with V-shaped longitudinal section, and the circumferential edge of the rubber sheet has a thickness of 0.8-2 mm and the circumference of the rubber sheet is matched with the inner wall of the cylinder.
The V-shaped peak is provided with a concave round pit, the diameter of the round pit is 1.2-2.4 mm, and the depth of the round pit is 1.5-2.2 mm.
Advantageous effect, the utility model discloses a sheet rubber of infundibulate, longitudinal section are the V-arrangement, and the circumferential edge reason thickness of sheet rubber is 0.7-2 millimeters moreover, and the circumference of sheet rubber coincide with the drum inner wall, and the top and the below of the position of check valve piece all are equipped with the protruding hoop that an annular is parallel, can hinder the position of check valve piece casing or the cross section of last casing under the cylindricality. The lower outline of infundibulate slightly takes curved shape, the flare opening up, when the liquid drop in the cove of check valve piece, then the check valve piece has flagging tendency in the effect of liquid drop weight, then can make liquid flow out at the edge of valve block, the liquid passage who advances to the play promptly from the top down promptly is unobstructed promptly, in return, alleviate the pressure to the valve block after the marginal liquid outflow of valve block, then the valve block is blockked by the protruding hoop in top, can seal the gas circuit, supreme liquid stream is ended down, even there is certain pressure in human blood pressure, it is palirrhea when can not arouse the infusion, can be arranged in the infusion connects, the piece formula check valve in infusion retention piece and the infusion check valve. The utility model discloses the structure is simple and clear, convenient to use, reliable, and the non return blood function is reliable, can improve the infusion security, is the infusion check valve of an ideal, is applicable to and installs on medical transfusion system, guarantees the one-way flow of infusion or even blood transfusion.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the valve plate of the one-way valve of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. As can be seen from fig. 1-2, the valve comprises a cylindrical lower shell 4 and a cylindrical upper shell 2, a one-way valve sheet 3 is vulcanized and molded by rubber or silicon rubber, the lower shell and the upper shell are connected by a thread 6, the upper end of the upper shell is fixed with a liquid inlet joint 1, the lower end of the lower shell is provided with a liquid outlet joint 2, a cylindrical lower shell 4 and a fixed liquid inlet joint 1, the cylindrical upper shell 2 and the lower liquid outlet joint 2 are both prepared by injection molding and plastic uptake, a one-way valve sheet is arranged at the cross section of one of the centers of the closed cylindrical lower shell or upper shell, the one-way valve sheet is a funnel-shaped rubber sheet, the outlet of the funnel is downward, the outer diameter of the one-way valve sheet is equal to the inner diameter of the cross section of the cylindrical lower shell or upper shell, and a circular parallel convex hoop 7 and 8 is arranged above and below the position of the one-way valve sheet on the inner wall of the cylindrical lower shell or the cylindrical upper shell; a pair of annular parallel collars 7, 8 are formed uniformly and by injection moulding on the cylindrical lower shell 4 or the cylindrical upper shell 2. The distance between the upper convex hoop and the lower convex hoop (the longitudinal section area can be semicircular or round corner rectangle) which are formed by injection molding is larger than the thickness of the edge of the valve plate of the one-way valve (namely the gap is 1-2 mm). When the check valve is installed, the rubber elasticity of the check valve sheet is utilized to be plugged into the space between the pair of annular parallel convex hoops 7 and 8 in the cylindrical lower shell 4, but a slight gap is reserved between the upper part and the lower part, so that the flow of one-way liquid is facilitated. The structure of the utility model can be arranged in the luer connector.
In the figure, a pressure-resistant valve plate 3 of the check valve and a concave round pit 3-1 are arranged. The pressure-resistant valve plate of the one-way valve is a funnel-shaped rubber plate, the lower bottom profile of the funnel shape is slightly arc-shaped, the longitudinal section of the funnel shape is V-shaped, and the angle of two oblique sides of the V-shape is 165-170 degrees. The circumferential edge of the rubber sheet is 0.8-2 mm thick, and the circumference of the rubber sheet is matched with the inner wall of the cylinder. The circumferential edge of the rubber sheet also has a considerable thickness, typically 1, 1.5 or 2 mm, with different thicknesses depending on the diameter. The V-shaped lower vertex is provided with a concave round pit with the diameter of 1.2-2.4 mm and the depth of 1.5-2.2 mm. When the one-way valve plate is pressed, the force is a supporting point,
while the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (4)
1. A transfusion joint with a one-way valve structure is characterized by comprising a cylindrical lower shell and a cylindrical upper shell, wherein a one-way valve sheet is arranged on the lower shell and is connected with the upper shell through threads; the distance between the upper convex hoop and the lower convex hoop is larger than the thickness of the edge of the one-way valve sheet.
2. The infusion connector with one-way valve structure as claimed in claim 1, wherein the distance between the upper and lower flanges is 1-2 mm greater than the thickness of the edge of the one-way valve flap.
3. The infusion connector with a one-way valve structure as claimed in claim 1, wherein the one-way valve flap is a funnel-shaped rubber sheet having a V-shaped longitudinal section, and the circumferential edge of the rubber sheet has a thickness of 0.8-2 mm and the circumference of the rubber sheet is fitted to the inner wall of the cylinder.
4. The infusion connector with a one-way valve structure as claimed in claim 1, wherein a concave round pit is arranged at the vertex of the V shape, the diameter of the round pit is 1.2-2.4 mm, and the depth of the round pit is 1.5-2.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922360646.1U CN211611069U (en) | 2019-12-25 | 2019-12-25 | Transfusion joint with one-way valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922360646.1U CN211611069U (en) | 2019-12-25 | 2019-12-25 | Transfusion joint with one-way valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211611069U true CN211611069U (en) | 2020-10-02 |
Family
ID=72631838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922360646.1U Active CN211611069U (en) | 2019-12-25 | 2019-12-25 | Transfusion joint with one-way valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211611069U (en) |
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2019
- 2019-12-25 CN CN201922360646.1U patent/CN211611069U/en active Active
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