CN216319227U - Double one-way sealed joint - Google Patents
Double one-way sealed joint Download PDFInfo
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- CN216319227U CN216319227U CN202122458296.XU CN202122458296U CN216319227U CN 216319227 U CN216319227 U CN 216319227U CN 202122458296 U CN202122458296 U CN 202122458296U CN 216319227 U CN216319227 U CN 216319227U
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Abstract
The application discloses dual one-way airtight joint, including connecting the main part, connect the main part and have last connecting channel, intermediate channel and lower connecting channel, the intermediate channel internal fixation has first center post and second center post, first center post has first sealed terminal surface, the second center post has the sealed terminal surface of second, still be fixed with in the intermediate channel and produce the first, the second elastic membrane that deform when receiving pressure, first elastic membrane is located first center post below, the second elastic membrane is located second center post below, first, the second elastic membrane all has the valve port that runs through from top to bottom. Two elastic membranes and two central columns are arranged, so that double sealing is realized under the action of the back pressure of venous blood pressure when the infusion is not performed, and the sealing performance is improved.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to a closed joint applied to infusion equipment.
Background
During clinical treatment or examination, medical personnel need to firstly connect the infusion indwelling needle and the infusion safety pipeline with the vein of a patient, then perform trial injection, and finally queue the patient for contrast enhancement. The blood pressure of the human vein is usually 10mmHg, and the existing one-way sealing joint cannot realize good sealing under the action of low pressure for a long time. Therefore, there is a need for a new hermetic joint.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel double one-way sealing joint.
The utility model provides a double one-way sealed joint, which comprises a joint main body, a first elastic membrane and a second elastic membrane, wherein the joint main body is provided with an upper connecting channel, a middle channel and a lower connecting channel which are sequentially arranged along the axial direction of the joint main body, a first central column and a second central column are fixed in the middle channel, the first central column is provided with a first sealing end face, the second central column is provided with a second sealing end face, a first elastic membrane and a second elastic membrane which can deform under pressure are also fixed in the middle channel, the first elastic membrane is positioned below the first central column, the second elastic membrane is positioned below the second central column, the first elastic membrane and the second elastic membrane are provided with valve ports which penetrate through up and down, the middle channel is provided with a conducting state and a disconnecting state, and in the disconnecting state, the first sealing end face is in contact with the first elastic membrane and blocks the valve ports, the second sealing end surface is in contact with the second elastic membrane surface and blocks a valve port of the second elastic membrane surface, so that the upper connecting channel and the lower connecting channel are disconnected; in the on state, the first elastic membrane deforms to enable the valve port of the first elastic membrane to be away from the first sealing end face, and the second elastic membrane deforms to enable the valve port of the second elastic membrane to be away from the second sealing end face, so that the middle channel is communicated with the upper connecting channel and the lower connecting channel; and the first sealing end face and the second sealing end face are both provided with arc chamfers.
The outer peripheral surface of the first central column is connected with the inner wall of the middle channel through a plurality of connecting columns distributed in a radial mode.
The dual one-way airtight joint comprises a first rubber mat and a second rubber mat, the first rubber mat comprises a first cylindrical body and a first elastic membrane, the top edge of the first cylindrical body is connected with the edge of the first elastic membrane into a whole, the second rubber mat comprises a second cylindrical body and a second elastic membrane, and the top edge of the second cylindrical body is connected with the edge of the second elastic membrane into a whole.
The first elastic film and the second elastic film each have a bent portion capable of increasing elasticity.
The first and second elastic films have a thickness of 0.1 to 0.15 mm.
The second central column is fixed inside the middle channel through a fixing body, the fixing body surrounds the second central column, and a through groove which penetrates through the second central column and the fixing body up and down is formed between the second central column and the fixing body.
The first cylindrical body presses on the top end face of the fixed body, and the bottom end face of the fixed body presses on the second cylindrical body.
The first central column and the second central column are circular or square columns.
The joint main part includes top connection main part and lower clutch main part, it locates to go up interface channel top connection main part, interface channel locates down interface channel is down, top connection main part and lower clutch main part butt joint are fixed, the intermediate channel form in between top connection main part and the lower clutch main part.
The utility model has the beneficial effects that: two elastic membranes and two central columns are arranged, so that double sealing is realized under the action of the back pressure of venous blood pressure when the infusion is not performed, and the sealing performance is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a dual one-way containment fitting of this embodiment;
fig. 2 and 3 are a perspective view and a cross-sectional view of the first rubber pad of the present embodiment, respectively;
fig. 4 is a schematic perspective view of the upper joint body of the present embodiment;
fig. 5 and 6 are enlarged partial views of P and Q in fig. 1, respectively.
Detailed Description
The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operation steps involved in the embodiments may be interchanged or modified in order as will be apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of description of certain embodiments and are not intended to necessarily refer to a required composition and/or order.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
As shown in fig. 1 to 6, a dual one-way sealing joint includes a joint body 1, a middle piece 2, a first rubber pad 3 and a second rubber pad 4. The joint body 1 is a structure that penetrates vertically in the axial direction thereof, and includes an upper connection passage 11, an intermediate passage 12, and a lower connection passage 13 that are provided in this order in the axial direction thereof. A first central pillar 14 is fixed inside the middle channel, and the bottom end surface of the first central pillar 14 is a first sealing end surface 141. The middle piece 2 is fixed inside the middle channel and has a second central pillar 21, and the bottom end surface of the second central pillar 21 is a second sealing end surface 211. The first rubber pad 3 and the second rubber pad 4 can control the on-off of the middle channel 12. The first rubber mat 3 has a first elastic membrane 31 which can deform when receiving pressure, the first elastic membrane 31 has a first valve port 32 which penetrates vertically along the axial direction of the joint main body, the second rubber mat 4 has a second elastic membrane 41 which can deform when receiving pressure, and the second elastic membrane 41 has a second valve port 42 which penetrates vertically along the axial direction of the joint main body.
First rubber mat 3 is fixed in middle passageway 12, and it is located the below of first center post 14, and first sealed terminal surface 141 of first center post can hug closely first elastic membrane 31. The second rubber pad 4 is fixed inside the middle channel 12 and located below the second central pillar 21, and the second sealing end surface 211 of the second central pillar can be tightly attached to the second elastic membrane 41.
The intermediate channel 12 has an on-state and an off-state. Under the action of the reverse pressure indicated by the arrow B, the first elastic membrane 31 is tightly attached to the first sealing end face 141, the first sealing end face 141 blocks the first valve port 32, the second elastic membrane 41 is tightly attached to the second sealing end face 211, the second sealing face 211 blocks the second valve port 42, the intermediate channel 12 is in a disconnected state, and the upper connecting channel 11 and the lower connecting channel 13 are disconnected. After the liquid medicine enters the joint body 1 from the upper connecting channel 11, under the action of the forward pressure shown by the arrow direction a, the first elastic membrane 31 deforms to make the first valve port 32 separate from the first sealing end surface 141, and the second elastic membrane 41 deforms to make the second valve port 42 separate from the second sealing end surface 211, so that the middle channel 12 is in a conducting state, and further the upper connecting channel 11 and the lower connecting channel 13 are communicated, so that the liquid medicine can flow into the lower connecting channel 13 through the upper connecting channel 11 and the middle channel 12.
In this embodiment, the first rubber pad 3 and the second rubber pad 4 are fixed inside the middle channel 12, and the on-off control of the middle channel 12 is realized by the deformation of the first elastic membrane 31 and the second elastic membrane 41 when the pressure is applied. The first elastic membrane 31 and the second elastic membrane 41 may be perpendicular to the axis of the joint main body 1, that is, the first elastic membrane 31 and the second elastic membrane 41 may be disposed at an interval in the direction of the axis and parallel to each other. Under the action of the reverse pressure, first elastic membrane 31 is tightly attached to first center pillar 14, so that first valve port 32 is blocked by first center pillar 14, and second elastic membrane 41 is tightly attached to second center pillar 21, so that second valve port 42 is blocked by second center pillar 21, so that intermediate passage 12 is disconnected from communication. Under the action of the forward pressure, the first elastic membrane 31 deforms to enable the first valve port 32 to leave the first center pillar 14, and the second elastic membrane 41 deforms to enable the second valve port 42 to leave the second center pillar 21, so that the intermediate channel 12 is communicated.
In this embodiment, the first and second seal end faces 141, 211 may have rounded chamfers 142, 212. First central pillar 14 and second central pillar 21 may be square or circular pillars.
As shown in fig. 1 to 6, a double one-way sealing joint includes a joint main body 1, a first rubber mat 3, a second rubber mat 4 and a middle piece 2 located between the first and second rubber mats.
The joint body 1 includes an upper joint body 15 and a lower joint body 16. The upper joint body 15 is a vertically penetrating structure having an upper connecting passage 11. The lower joint body 16 is a structure penetrating up and down, and has a lower connecting passage 13. The lower portion of upper connecting body 15 is secured in abutment with the upper portion of lower connecting body 16, the abutment defining an intermediate passage 12, the intermediate passage 12 connecting the upper connecting passage 11 with the lower connecting passage 14. The upper and lower connector bodies 15, 16 may be coaxial, and the upper connecting passage 11, the middle passage 12 and the lower connecting passage 13 are arranged in this order from top to bottom in the direction of the axis.
A first central pillar 14 is fixed inside the middle channel 12, and the outer circumferential surface of the first central pillar 14 and the inner wall of the middle channel are fixed into a whole through a plurality of connecting columns 17 distributed in a radial shape. The bottom end surface of first central post 14 is a first sealing end surface 141.
The first rubber pad 3 and the second rubber pad 4 have the same structure, and the structure is described by taking the first rubber pad as an example. The first rubber pad 3 has a cylindrical first cylindrical body 33 and a circular first elastic membrane 31, and the top edge of the first cylindrical body 33 is integrally connected with the edge of the first elastic membrane 31. The first elastic membrane 31 has a bent portion 34 capable of enhancing elasticity, and a first valve port 32 penetrating vertically is provided at a central position of the first elastic membrane 31. The second rubber pad 4 has a second cylindrical body 43 and a second elastic membrane 41, a second valve port 42 penetrating vertically is provided at the center of the second elastic membrane 41, and the second elastic membrane has a bent portion capable of enhancing elasticity. The first elastic membrane 31 and the second elastic membrane 41 may be disposed in parallel, and the first elastic membrane 31 and the second elastic membrane 41 may be perpendicular to the axis of the joint body 1.
The middle piece 2 has a fixing body 22 and a second central pillar 21, the fixing body 22 can surround the second central pillar 21, and a through groove 23 for passing the liquid medicine is formed between the second central pillar 21 and the fixing body 22. The second central pillar 21 may be a square or circular cylinder, and the bottom end surface thereof is the second sealing end surface 211.
The first central column 21, the first rubber mat 3, the middle piece 2 and the second rubber mat 4 are all fixed inside the middle channel 12. The first rubber mat 3 is located below the first center column 14, the second rubber mat 4 is located below the middle piece 2, and the middle piece 2 is located between the first rubber mat 3 and the second rubber mat 4. The first sealing end face 141 of the first center post is in surface contact with the first elastic membrane 31 of the first rubber mat, the first cylindrical body 33 of the first rubber mat is pressed against the fixed body 22 of the middle piece, and the second sealing end face 211 of the second center post of the middle piece is in surface contact with the second elastic membrane 41 of the second rubber mat. The fixing body 22 of the middle piece is fixed on the inner wall of the middle channel 12, and the tubular bodies of the first and second rubber mats are fixed on the inner wall of the middle channel. In the axial direction of the joint main body, the first center post 14, the first rubber mat 3, the middle piece 2 and the second rubber mat 4 are sequentially arranged from top to bottom.
The intermediate channel 12 has an on-state and an off-state. When the pressure is reversed, the first elastic membrane 31 is tightly attached to the first sealing end surface 141 of the first center post, and the first valve port 32 is blocked by the first sealing end surface 141; the second elastic membrane 41 is tightly attached to the second sealing end surface 211 of the second center post, so that the second valve port 42 is blocked by the second sealing end surface 211; the intermediate passage 12 is brought into a disconnected state, and the upper and lower connecting passages 11 and 13 are disconnected from each other. When the liquid medicine enters the upper connecting passage 11 under the positive pressure, the first elastic membrane 31 deforms under the liquid medicine pressure to make the first valve port 32 leave the first sealing end face 141, so that the liquid medicine enters between the first rubber mat 3 and the second rubber mat 4, and under the liquid medicine pressure, the second elastic membrane 41 deforms to make the second valve port 42 leave the second sealing end face 211, so that the liquid medicine enters the lower connecting passage 13, that is, under the positive pressure, the first valve port 32 and the second valve port 42 are opened, and the upper connecting passage 11 and the lower connecting passage 13 are communicated through the middle passage 12.
When in use, the lower connecting channel 13 is fixedly bonded with a transfusion hose which is connected with an indwelling needle; the upper connecting passage 11 is fixedly bonded to a flexible infusion tube connected to a medical fluid container. When the infusion is not performed, the first elastic membrane 31 is tightly attached to the first sealing end surface 141 and the second elastic membrane 41 is tightly attached to the second sealing end surface 211 under the action of the reverse pressure. During infusion, under the positive pressure of the drug solution, the first elastic membrane 31 deforms to form a gap through which the drug solution passes with the first sealing end face 141, and the second elastic membrane 41 deforms to form a gap through which the drug solution passes with the second sealing end face 211.
In the present embodiment, both the upper connection channel 11 and the lower connection channel 13 can be bonded and fixed to the infusion hose. The upper connection channel 11 and the lower connection channel 13 may have an equal inner diameter portion that can be adhesively fixed with the infusion hose. The intermediate passage 12 may be of a variable inner diameter construction, such as a larger inner diameter in the intermediate portion and a smaller inner diameter in the upper and lower portions.
In this embodiment, the first central pillar 14 and the second central pillar 21 may be square or circular pillars, the first sealing end surface 141 of the first central pillar may have the circular arc chamfer 142, and the second sealing end surface 211 of the second central pillar 21 may also have the circular arc chamfer 212.
For the double one-way sealing joint, the wall thickness of the first elastic membrane and the second elastic membrane is thin, such as 0.1-0.15mm, so that the sensitivity of material movement can still be maintained under the state of low pressure (such as human venous pressure is usually 10 mmHg). First, second center post have the circular arc chamfer, the burr problem that exists when can effectively avoiding gluey piece injection moulding, avoid influencing the cushion and first, the sealed planar sealing of second because the height fluctuation that the burr leads to differs.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the utility model and are not intended to be limiting. For a person skilled in the art to which the utility model pertains, several simple deductions, modifications or substitutions may be made according to the idea of the utility model.
Claims (9)
1. A double one-way sealed joint is characterized by comprising a joint main body, a first elastic membrane and a second elastic membrane, wherein the joint main body is provided with an upper connecting channel, a middle channel and a lower connecting channel which are sequentially arranged along the axis direction of the joint main body, a first central column and a second central column are fixed in the middle channel, the first central column is provided with a first sealing end face, the second central column is provided with a second sealing end face, a first elastic membrane and a second elastic membrane which can deform under pressure are fixed in the middle channel, the first elastic membrane is positioned below the first central column, the second elastic membrane is positioned below the second central column, the first elastic membrane and the second elastic membrane are provided with valve ports which penetrate through up and down, the middle channel is provided with a conducting state and a disconnecting state, and in the disconnecting state, the first sealing end face is in contact with the first elastic membrane face and blocks the valve ports, the second sealing end surface is in contact with the second elastic membrane surface and blocks a valve port of the second elastic membrane surface, so that the upper connecting channel and the lower connecting channel are disconnected; in the on state, the first elastic membrane deforms to enable the valve port of the first elastic membrane to be away from the first sealing end face, and the second elastic membrane deforms to enable the valve port of the second elastic membrane to be away from the second sealing end face, so that the middle channel is communicated with the upper connecting channel and the lower connecting channel; and the first sealing end face and the second sealing end face are both provided with arc chamfers.
2. The dual unidirectional close fitting of claim 1, wherein the outer circumferential surface of the first central post and the inner wall of the intermediate channel are connected by a plurality of connecting posts distributed radially.
3. The dual unidirectional close joint according to claim 1, wherein the dual unidirectional close joint comprises a first rubber mat and a second rubber mat, the first rubber mat comprises a first cylindrical body and the first elastic membrane, the top edge of the first cylindrical body is integrally connected with the edge of the first elastic membrane, the second rubber mat comprises a second cylindrical body and the second elastic membrane, and the top edge of the second cylindrical body is integrally connected with the edge of the second elastic membrane.
4. A double unidirectional containment joint according to claim 3, wherein the first and second elastic membranes each have a bend portion capable of increasing elasticity.
5. A dual unidirectional containment joint as recited in claim 3, wherein the first and second elastomeric films have a thickness of 0.1-0.15 mm.
6. The dual unidirectional close joint as recited in claim 3, wherein said second central pillar is fixed inside said intermediate channel by a fixing body, said fixing body surrounds said second central pillar, and a through slot is formed between said second central pillar and said fixing body.
7. A double one-way hermetic joint according to claim 6, characterized in that said first cylindrical body presses on the top end face of said fixed body, the bottom end face of said fixed body pressing on said second cylindrical body.
8. The dual unidirectional close joint according to claim 1, wherein the first and second center posts are circular or square posts.
9. The dual one-way hermetic connector according to claim 1, wherein the connector body comprises an upper connector body and a lower connector body, the upper connection passage is disposed in the upper connector body, the lower connection passage is disposed in the lower connector body, the upper connector body and the lower connector body are butt-fixed, and the middle passage is formed between the upper connector body and the lower connector body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122458296.XU CN216319227U (en) | 2021-10-12 | 2021-10-12 | Double one-way sealed joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122458296.XU CN216319227U (en) | 2021-10-12 | 2021-10-12 | Double one-way sealed joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216319227U true CN216319227U (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122458296.XU Active CN216319227U (en) | 2021-10-12 | 2021-10-12 | Double one-way sealed joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216319227U (en) |
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2021
- 2021-10-12 CN CN202122458296.XU patent/CN216319227U/en active Active
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