CN219662647U - High leakproofness structure of medical three-way valve - Google Patents
High leakproofness structure of medical three-way valve Download PDFInfo
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- CN219662647U CN219662647U CN202321014839.1U CN202321014839U CN219662647U CN 219662647 U CN219662647 U CN 219662647U CN 202321014839 U CN202321014839 U CN 202321014839U CN 219662647 U CN219662647 U CN 219662647U
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- ring
- sealing
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- wall
- way valve
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- 238000007789 sealing Methods 0.000 claims abstract description 92
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 239000002356 single layer Substances 0.000 abstract description 3
- 239000010410 layer Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010253 intravenous injection Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 229940127554 medical product Drugs 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Abstract
The utility model relates to a high-tightness structure of a medical three-way valve, which aims at solving the technical problems that the sealing structure of the current three-way valve is single-layer and has poor sealing effect. The three-way valve has the advantages that the sealing structure of the three-way valve is double-layer, the sealing effect is greatly improved, the arranged limiting device is used for sealing the top ring and the inner limiting ring, the damage and the reduction of the sealing performance of the sealing ring can be prevented, the sealing ring is more tightly connected with the connecting pipe, and the tightness of the three-way valve during connection is improved.
Description
Technical Field
The utility model belongs to the technical field of medical three-way valves, and particularly relates to a high-tightness structure of a medical three-way valve.
Background
The medical three-way valve is a medical product which is used for intravenous injection or transfusion of blood transfusion of a patient and is often matched with other medical instruments, and is widely applied to clinic, one end of the medical three-way valve is connected with a vein passage, and the other end of the medical three-way valve is connected with different liquid medicine; the medical three-way valve can be used for simultaneously inputting different kinds of liquid medicine through one infusion passage, and one or more medical three-way valves can be used at a time according to the treatment requirement.
The sealing ring is added to the inside of the existing medical three-way valve connecting pipe and is in sealing connection with the connector, the sealing ring can be extruded in the screw cap screwing process, when the three-way valve is used for many times, the sealing ring is damaged, the sealing performance is reduced, the connection between the sealing ring and the connecting pipe is not tight enough, meanwhile, the existing three-way valve sealing structure is of a single layer, and the sealing effect is insufficient. In view of this, we propose a high tightness structure for medical three-way valves.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, adapt to the actual needs, and provide a medical three-way valve high-tightness structure so as to solve the technical problems that the current three-way valve sealing structure is single-layer and has poor sealing effect.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows: the utility model provides a high leakproofness structure of medical three-way valve of design, includes the three-way valve that main pipe and three valve body connect the subassembly to constitute, the main pipe sets up to hollow cylinder, valve body connects the subassembly including the fastening ring cover, connect public head, outer spacing ring, pushing away the handle, valve body connecting pipe, first sealing washer, first annular, interior spacing ring, second annular, second sealing washer, sealed jack ring and interior bulge loop, the valve body connecting pipe diminishes along self center pin direction with the internal diameter of connecting public head gradually, valve body connecting pipe internal diameter small head end is fixed with sealed jack ring terminal surface, connect public head diameter small head end grafting into the valve body connecting pipe in to with sealed jack ring butt, the great one end in public head diameter is established to the fastening ring cover, fastening ring cover one end and second sealing washer joint, connect public head one end and first sealing washer joint.
Preferably, the first ring groove is arranged in the middle of the side wall of the small end of the connecting male head, the protruding end of the first sealing ring is inserted into the first ring groove, and the first sealing ring is abutted with the sealing top ring to realize sealing.
Preferably, the second ring groove is arranged in the middle of the side wall of the small end of the fastening ring sleeve, the protruding end of the second sealing ring is inserted into the second ring groove, a gap is reserved between the inner wall of the valve body connecting pipe and the outer wall of the connecting male head, and the second sealing ring is positioned in the gap formed by the inner wall of the valve body connecting pipe and the outer wall of the connecting male head.
Preferably, the inner limiting ring and the outer limiting ring are respectively fixed at the left side and the right side of the outer wall of the connecting male head, the inner convex ring is fixed at the middle part of the inner wall of the fastening ring sleeve, and the inner convex ring and the inner limiting ring are mutually limited.
Preferably, the inner wall of the valve body connecting pipe is provided with internal threads, the right side of the outer wall of the fastening ring sleeve is provided with external threads, and the valve body connecting pipe is in detachable threaded connection with the fastening ring sleeve.
Preferably, the main pipeline is in penetrating communication with the three valve body connecting pipes, and two sides of the right end of the fastening ring sleeve and the pushing handle can be integrally injection molded.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the first sealing ring arranged at one end of the connecting male head is in butt joint and sealing with the sealing top ring, so that the connecting male head and the valve body connecting pipe form a smooth inner channel, a first sealing structure is formed, and the tightness of the three-way valve is increased.
2. The second sealing ring is used for sealing the gap between the inner wall of the valve body connecting pipe and the connecting male head in an abutting mode, a second sealing structure is formed, and the tightness of the three-way valve is further improved.
Drawings
FIG. 1 is a schematic diagram of a front perspective view of the present utility model;
FIG. 2 is a schematic view of a three-dimensional explosion structure of the utility model;
FIG. 3 is a schematic cross-sectional view of a valve body connecting tube according to the present utility model;
FIG. 4 is a schematic cross-sectional view of the fastening collar of the present utility model.
In the figure: 1. a main pipe; 2. a valve body joint assembly; 201. a fastening ring sleeve; 202. connecting a male head; 203. an outer limit ring; 204. a pushing handle; 205. a valve body connecting pipe; 206. a first seal ring; 207. a first ring groove; 208. an inner limit ring; 209. a second ring groove; 210. a second seal ring; 211. sealing the top ring; 212. an inner convex ring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
as shown in fig. 1 to 4, the three-way valve comprising a main pipe 1 and three valve body joint assemblies 2 is provided, the main pipe 1 is hollow and cylindrical, the valve body joint assemblies 2 comprise a fastening ring sleeve 201, a connecting male head 202, an outer limiting ring 203, a push handle 204, a valve body connecting pipe 205, a first sealing ring 206, a first annular groove 207, an inner limiting ring 208, a second annular groove 209, a second sealing ring 210, a sealing top ring 211 and an inner convex ring 212, the inner diameters of the valve body connecting pipe 205 and the connecting male head 202 are gradually reduced along the central axis direction of the main pipe, the small-diameter end of the valve body connecting pipe 205 is fixed with the end face of the sealing top ring 211, the small-diameter end of the connecting male head 202 is inserted into the valve body connecting pipe 205 and is abutted with the sealing top ring 211, the fastening ring sleeve 201 is sleeved at one end with the larger diameter of the connecting male head 202, one end of the fastening ring sleeve 201 is clamped with the second sealing ring 210, one end of the second sealing ring 210 is an annular square block 209, the other end of the second sealing ring 210 is columnar round, the two ends are respectively abutted with the outer wall of the connecting male head 202 and the inner wall 205, the small-diameter of the connecting male head 202 is clamped with the small-diameter of the first sealing head 202, and the small-diameter of the connecting pipe 202 is in smooth transition joint with the small-diameter of the inner diameter of the connecting male head 202.
The first sealing ring 206 and the second sealing ring 210 are made of rubber, and are of the prior art, and are not described in detail.
One end of each of the three valve body connecting pipes 205 is respectively arranged on three surfaces of the main pipeline 1 and forms a T shape, wherein one end with a large inner diameter of each of the two connecting male heads 202 is connected with an external infusion pipeline, the other connecting male head 202 is connected with a hose of a puncture needle, a nurse inserts one end with a small inner diameter of each of the connecting male heads 202 into an inner cavity of the valve body connecting pipe 205, the first sealing ring 206 is abutted with a sealing top ring 211 at one end of the valve body connecting pipe 205, then the nurse rotates the fastening ring sleeve 201 to screw the fastening ring sleeve into the inner cavity of the valve body connecting pipe 205, the fastening ring sleeve 201 is arranged on one side of the second sealing ring 210 to be made of flexible rubber, and a plurality of openings are formed on one side of the fastening ring sleeve 201 on the second sealing ring 210 to enable the fastening ring sleeve to be deformed under pressure so as to change along with the change of the inner diameter of the valve body connecting pipe 205.
Then, as the fastening collar 201 continues to go deep, the second sealing ring 210 fills the gap between the inner wall of the valve connecting pipe 205 and the connecting male head 202, so as to achieve a sealing effect, the inner convex ring 212 inside the fastening collar 201 contacts with the inner limiting ring 208 outside the connecting male head 202, and the connecting male head 202 moves continuously, and the connecting male head 202 drives the first sealing ring 206 to move and squeeze, so that a better sealing effect is achieved. When the three-way valve is used for a plurality of times, the three-way valve sealing structure is double-layered, the sealing effect is greatly improved, the arranged limiting device sealing top ring 211 and the inner limiting ring 208 can prevent the sealing ring from damaging and reducing the sealing performance, the connection between the sealing ring and the connecting pipe is tighter, and the sealing performance of the three-way valve during connection is improved.
Specifically, the first ring groove 207 is disposed in the middle of the small end side wall of the connection male head 202, the protruding end of the first sealing ring 206 is inserted into the first ring groove 207, and the first sealing ring 206 abuts against the sealing top ring 211 to realize sealing. In the utility model, the first ring groove 207 is used for fixing the first sealing ring 206, and meanwhile, the first sealing ring 206 and the sealing top ring 211 form a first sealing structure, so that the tightness of the three-way valve is further improved, and the sealing top ring 211 limits the connecting male head 202.
Further, the second ring groove 209 is disposed in the middle of the small end side wall of the fastening ring 201, the protruding end of the second sealing ring 210 is inserted into the second ring groove 209, a gap is left between the inner wall of the valve body connecting pipe 205 and the outer wall of the connecting male 202, and the second sealing ring 210 is located in the gap formed by the inner wall of the valve body connecting pipe 205 and the outer wall of the connecting male 202. According to the utility model, the second sealing ring 210 seals the gap between the inner wall of the valve body connecting pipe 205 and the connecting male head 202 to form a second sealing structure, so that the tightness of the three-way valve is further increased, and the second sealing ring 210 contacts with the inner wall of the valve body connecting pipe 205 and the outer wall of the connecting male head 202 respectively by means of two sides and is stressed and deformed to realize a sealing effect.
Still further, the inner limiting ring 208 and the outer limiting ring 203 are respectively fixed on the left side and the right side of the outer wall of the connecting male head 202, the inner convex ring 212 is fixed in the middle of the inner wall of the fastening ring sleeve 201, and the inner convex ring 212 and the inner limiting ring 208 are mutually limited. According to the utility model, the outer diameter of the outer limiting ring 203 is larger than that of the connecting male head 202, so that the connecting male head 202 is limited to prevent the connecting male head 202 from sliding off from the surface of the connecting male head 202, the inner convex ring 212 on the inner wall of the fastening ring sleeve 201 drives the connecting male head 202 to be in abutting sealing with the sealing top ring 211 of the valve body connecting pipe 205 through the inner limiting ring 208, and a gap for rotating is formed between the outer wall of the connecting male head 202 and the inner wall of the inner convex ring 212.
It should be noted that, the inner wall of the valve connecting pipe 205 is provided with an internal thread, the right side of the outer wall of the fastening ring 201 is provided with an external thread, and the valve connecting pipe 205 is detachably connected with the fastening ring 201 through threads. According to the utility model, the fastening ring sleeve 201 is screwed into the valve body connecting pipe 205, so that the valve body connecting pipe 205 and the connecting male head 202 can be connected and fixed to form a pipeline for liquid flow, however, the valve body connecting pipe 205 and the connecting male head 202 are spliced to form a smooth inner channel, and the threads on the surface can be processed by later equipment or cast integrally during part casting.
It should be noted that the main pipe 1 is connected with the three valve connecting pipes 205 in a penetrating way, and the two sides of the right end of the fastening ring 201 and the push handle 204 can be integrally injection molded. According to the utility model, the three valve body connecting pipes 205 can form a T shape with the main pipeline 1, can also form various shapes such as a Y shape, can be customized and produced according to use, and the arranged push handle 204 is more labor-saving in rotating the fastening ring sleeve 201, so that the operation is more convenient.
The embodiments of the present utility model are disclosed as preferred embodiments, but not limited thereto, and those skilled in the art will readily appreciate from the foregoing description that various modifications and variations can be made without departing from the spirit of the present utility model.
Claims (6)
1. The utility model provides a high leakproofness structure of medical three-way valve, includes the three-way valve that main pipe and three valve body joint assembly constitute, its characterized in that: the main pipeline is arranged to be hollow cylindrical, the valve body joint assembly comprises a fastening ring sleeve, a connecting male head, an outer limiting ring, a pushing handle, a valve body connecting pipe, a first sealing ring, a first annular groove, an inner limiting ring, a second annular groove, a second sealing ring, a sealing top ring and an inner convex ring, the inner diameter of the valve body connecting pipe and the inner diameter of the connecting male head are gradually reduced along the central shaft direction of the valve body connecting pipe, the small-head end of the inner diameter of the valve body connecting pipe is fixed with the end face of the sealing top ring, the small-head end of the connecting male head is inserted into the valve body connecting pipe and is abutted against the sealing top ring, the fastening ring sleeve is sleeved at one end with the larger diameter of the connecting male head, one end of the fastening ring sleeve is in clamping connection with the second sealing ring, and one end of the connecting male head is in clamping connection with the first sealing ring.
2. The medical three-way valve high tightness structure according to claim 1, wherein: the first annular groove is arranged in the middle of the side wall of the small end of the connecting male head, the protruding end of the first sealing ring is inserted into the first annular groove, and the first sealing ring is abutted with the sealing top ring to realize sealing.
3. The medical three-way valve high tightness structure according to claim 1, wherein: the second annular groove is arranged in the middle of the side wall of the small end of the fastening ring sleeve, the protruding end of the second sealing ring is inserted into the second annular groove, a gap is reserved between the inner wall of the valve body connecting pipe and the outer wall of the connecting male head, and the second sealing ring is positioned in the gap formed by the inner wall of the valve body connecting pipe and the outer wall of the connecting male head.
4. The medical three-way valve high tightness structure according to claim 1, wherein: the inner limiting ring and the outer limiting ring are respectively fixed at the left side and the right side of the outer wall of the connecting male head, the inner convex ring is fixed at the middle part of the inner wall of the fastening ring sleeve, and the inner convex ring and the inner limiting ring are mutually limited.
5. The medical three-way valve high tightness structure according to claim 1, wherein: the valve body connecting pipe inner wall is provided with the internal thread, fastening ring cover outer wall right side is provided with the external screw thread, valve body connecting pipe and fastening ring cover are detachable threaded connection.
6. The medical three-way valve high tightness structure according to claim 1, wherein: the main pipeline is in penetrating communication with the three valve body connecting pipes, and two sides of the right end of the fastening ring sleeve and the pushing handle can be integrally injection molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321014839.1U CN219662647U (en) | 2023-04-28 | 2023-04-28 | High leakproofness structure of medical three-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321014839.1U CN219662647U (en) | 2023-04-28 | 2023-04-28 | High leakproofness structure of medical three-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219662647U true CN219662647U (en) | 2023-09-12 |
Family
ID=87922604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321014839.1U Active CN219662647U (en) | 2023-04-28 | 2023-04-28 | High leakproofness structure of medical three-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219662647U (en) |
-
2023
- 2023-04-28 CN CN202321014839.1U patent/CN219662647U/en active Active
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| GR01 | Patent grant |