CN210583275U - Indwelling needle assembly - Google Patents
Indwelling needle assembly Download PDFInfo
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- CN210583275U CN210583275U CN201920525506.2U CN201920525506U CN210583275U CN 210583275 U CN210583275 U CN 210583275U CN 201920525506 U CN201920525506 U CN 201920525506U CN 210583275 U CN210583275 U CN 210583275U
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Abstract
The utility model discloses an indwelling needle assembly, include: the three-way needle comprises a three-way needle seat, a transfusion catheter and a three-way connecting seat, wherein a remaining hose is arranged at the front end of the three-way needle seat, a puncture needle penetrates into the three-way needle seat, a one-way valve is arranged in the three-way needle seat, the one-way valve allows liquid to flow from the rear end to the front end and prevents the liquid from flowing from the front end to the rear end, and the three-way needle seat is provided with a liquid medicine input port; one end of the infusion catheter is communicated with the liquid medicine input port of the three-way needle seat; the front end of the three-way connecting seat is provided with a drainage tube, the drainage tube is communicated with the other end of the infusion catheter, and the drainage tube is in a bent arc shape in the direction from the rear end to the front end. The utility model discloses a indwelling needle assembly is through setting up one-way valve in the tee bend needle file to be crooked arc with the drainage tube design for being in the direction of front end from the rear end, can avoid the backward flow, and convenient to use is laborsaving.
Description
Technical Field
The utility model relates to the technical field of medical equipment, more specifically relates to an indwelling needle assembly.
Background
Intravenous infusion is widely used clinically, wherein a venous indwelling needle is a conventional device for intravenous infusion. However, the phenomenon of backward flow easily takes place for the needle of keeping somewhere among the correlation technique, influences normal treatment, if not discover to handle in time, still can bury down health hidden danger for the patient, in addition, tee bend connecting seat is nearly parallel with patient's arm, leads to medical staff's operation hard, uses inconveniently.
Disclosure of Invention
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides an indwelling needle assembly which can avoid backflow and is convenient and labor-saving to use.
According to the utility model discloses an indwelling needle assembly, including the structure: the three-way needle comprises a three-way needle seat, a transfusion catheter and a three-way connecting seat, wherein a remaining hose is arranged at the front end of the three-way needle seat, a puncture needle penetrates into the three-way needle seat, a one-way valve is arranged in the three-way needle seat, the one-way valve allows liquid to flow from the rear end to the front end and prevents the liquid from flowing from the front end to the rear end, and the three-way needle seat is provided with a liquid medicine input port; one end of the infusion catheter is communicated with the liquid medicine input port of the three-way needle seat; the front end of the three-way connecting seat is provided with a drainage tube, the drainage tube is communicated with the other end of the infusion catheter, and the drainage tube is in a bent arc shape in the direction from the rear end to the front end.
According to the utility model discloses a indwelling needle assembly is through setting up one-way valve in the tee bend needle file to be crooked arc with the drainage tube design for being in the direction of front end from the rear end, can avoid the backward flow, and convenient to use is laborsaving.
Optionally, the one-way valve is disposed within the indwelling hose.
Optionally, the one-way valve comprises: the annular outer wall is connected with the indwelling hose, the elastic valves are circumferentially arranged on the inner circumferential surface of the annular outer wall, two adjacent elastic valves are in butt joint, and each elastic valve deforms under the action of liquid pressure from the rear end to the front end to form a gap so as to allow liquid to flow from the rear end to the front end.
Advantageously, the thickness of each of the resilient valves decreases from the outside inwards in a radial direction of the annular outer wall.
Advantageously, each of said elastic valves is a silicone valve.
Optionally, the three-way connecting base comprises a tail pipe, a side connection pipe and the drainage pipe, the tail pipe extends from back to front to form a straight pipe, the side connection pipe is a straight pipe obliquely connected to the side wall of the tail pipe, and the drainage pipe is connected to the front end of the tail pipe.
Advantageously, the draft tube is curved in an arc shape in a direction from rear to front, which is bent toward the bypass tube.
Advantageously, the draft tube is curved in an arc away from a plane in which the tail tube and the bypass tube are located in a backward-forward direction.
Specifically, the radius of curvature of the drainage tube is between 5mm and 30 mm.
Specifically, the diameter of the draft tube is gradually reduced in a direction from the rear end to the front end, and the extension length of the draft tube is between 5mm and 30 mm.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural view of an indwelling needle assembly according to the present invention;
fig. 2 is a schematic structural view of a one-way valve of an indwelling needle assembly according to the present invention.
Reference numerals:
1-a three-way needle seat; 2-an infusion catheter; 3-a three-way connecting seat; 4-one-way valve; 11-indwelling hose; 12-puncture needle; 13-a liquid medicine input port; 31-a drainage tube; 32-tail tube; 33-a bypass pipe; 41-annular outer wall; 42-elastic valve.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
Referring to fig. 1, an indwelling needle assembly according to an embodiment of the present invention includes: a three-way needle seat 1, an infusion catheter 2 and a three-way connecting seat 3. For convenience of description and understanding, the front-back direction is exemplified by the front-back direction shown in the drawings.
The front end of the three-way needle base 1 is provided with a retention hose 11, a puncture needle 12 penetrates into the three-way needle base 1, a one-way valve 4 is arranged in the three-way needle base 1, the one-way valve 4 allows liquid to flow from the rear end to the front end and prevents the liquid from flowing from the front end to the rear end, and the three-way needle base 1 is provided with a liquid medicine input port 13;
one end of the transfusion catheter 2 is communicated with a liquid medicine input port 13 of the three-way needle stand 1;
the three-way connection holder 3 has a drainage tube 31 at the front end thereof, the drainage tube 31 is communicated with the other end of the infusion tube 2, and the drainage tube 31 is curved in an arc shape in a direction from the rear end to the front end.
When the medical indwelling needle is used, the front end of the puncture needle 12 punctures the vein of a patient, liquid medicine sequentially flows through the three-way connecting seat 3, the infusion catheter 2, the liquid medicine input port 13 and the one-way valve 4 from back to front, and then is injected into the patient through the puncture needle 12, the drainage tube 31 is designed into an arc shape which is bent in the direction from the back end to the front end, so that an included angle and a gap can be formed between the three-way connecting seat 3 and the arm of the patient, the medical personnel can be conveniently connected with the indwelling needle assembly and other devices, and the operation is. In the injection process, the one-way valve 4 allows the liquid medicine to flow from the rear end to the front end, so that normal transfusion can be realized, and once the blood backflow phenomenon occurs, the one-way valve 4 prevents the blood from flowing from the front end to the rear end, so that the backflow blocking phenomenon can be avoided, and the safety is improved.
The utility model discloses a indwelling needle assembly is through setting up one-way valve 4 in tee bend needle file 1 to be crooked arc with drainage tube 31 design for the direction from the rear end to the front end, can avoid the backward flow, and convenient to use is laborsaving.
According to some embodiments of the present invention, as shown in fig. 1, the one-way flap valve 4 is provided in the indwelling hose 11. Wherein the one-way valve 4 comprises: the annular outer wall 41 is connected with the indwelling hose 11, the elastic valves 42 are circumferentially arranged on the inner circumferential surface of the annular outer wall 41, two adjacent elastic valves 42 are arranged in an abutting mode, and each elastic valve 42 deforms under the action of liquid pressure from the rear end to the front end to form a gap so as to allow liquid to flow from the rear end to the front end. In the present invention, the meaning of a plurality of means is two or more.
For example, in the example shown in fig. 2, the one-way valve 4 includes an annular outer wall 41 and three elastic valves 42, the three elastic valves 42 are deformed to form a gap under the action of the liquid pressure from the back end to the front end, so as to allow the liquid medicine to flow from the back end to the front end, thereby allowing normal transfusion, and once the blood backflow phenomenon occurs, the mulberry elastic valves 42 are arranged in an abutting manner to block the flow of blood from the front end to the back end, thereby avoiding the backflow tube blockage phenomenon.
Advantageously, the thickness of each of the elastic valves 42 decreases from the outside towards the inside in the radial direction of the annular outer wall 41. Advantageously, each of said elastic valves 42 is a silicone valve. Therefore, the elastic valve 42 is beneficial to elastic deformation and is safe and healthy.
As shown in fig. 1, the tee coupling base 3 includes a tail pipe 32, a bypass pipe 33 and the draft tube 31, the tail pipe 32 extends from back to front to form a straight pipe, the bypass pipe 33 is a straight pipe connected to the side wall of the tail pipe 32 in an inclined manner, and the draft tube 31 is connected to the front end of the tail pipe 32. Advantageously, the draft tube 31 is curved in an arc shape in a direction from the rear to the front, which is bent toward the bypass tube 33. Advantageously, the draft tube 31 is curved in an arc away from the plane in which the tail tube 32 and the bypass tube 33 are located in the backward and forward direction.
Thus, the drain tube 31 may be designed in an arc shape offset to the bypass tube 33 and offset to the plane of the patient's arm, optionally, as shown in FIG. 1, the angle A between the front end portion of the drain tube and the rear end portion of the drain tube satisfies: a is more than or equal to 125 degrees and less than or equal to 130 degrees, thereby facilitating the medical staff to connect the indwelling needle assembly with other devices, and having convenient and labor-saving operation.
Specifically, the radius of curvature of the draft tube 31 is between 5mm and 30 mm. Specifically, the diameter of the draft tube 31 is gradually reduced in a direction from the rear end to the front end, and the extension length of the draft tube 31 is between 5mm and 30 mm. Therefore, the processing and the manufacturing are convenient, and the cost is saved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (10)
1. An indwelling needle assembly, comprising: a three-way needle seat, a transfusion catheter and a three-way connecting seat,
the front end of the three-way needle seat is provided with an indwelling hose, a puncture needle penetrates into the three-way needle seat, a one-way valve is arranged in the three-way needle seat, the one-way valve allows liquid to flow from the rear end to the front end and prevents the liquid from flowing from the front end to the rear end, and the three-way needle seat is provided with a liquid medicine input port;
one end of the infusion catheter is communicated with the liquid medicine input port of the three-way needle seat;
the front end of the three-way connecting seat is provided with a drainage tube, the drainage tube is communicated with the other end of the infusion catheter, and the drainage tube is in a bent arc shape in the direction from the rear end to the front end.
2. The indwelling needle assembly of claim 1, wherein: the one-way valve is arranged in the indwelling hose.
3. The indwelling needle assembly of claim 2, wherein: the one-way valve includes: the annular outer wall is connected with the indwelling hose, the elastic valves are circumferentially arranged on the inner circumferential surface of the annular outer wall, two adjacent elastic valves are in butt joint, and each elastic valve deforms under the action of liquid pressure from the rear end to the front end to form a gap so as to allow liquid to flow from the rear end to the front end.
4. The indwelling needle assembly of claim 3, wherein: the thickness of each elastic valve decreases from outside to inside in the radial direction of the annular outer wall.
5. The indwelling needle assembly of claim 3, wherein: each elastic valve is a silica gel valve.
6. The indwelling needle assembly of claim 1, wherein: the three-way connecting base comprises a tail pipe, a side connecting pipe and the drainage pipe, the tail pipe extends from back to front to form a straight pipe, the side connecting pipe is a straight pipe which is connected to the side wall of the tail pipe in an inclined mode, and the drainage pipe is connected to the front end of the tail pipe.
7. The indwelling needle assembly of claim 6, wherein: the drainage tube is in an arc shape which is deviated from the bending of the side connection tube in the direction from back to front.
8. The indwelling needle assembly of claim 6, wherein: the drainage tube is in a curved arc shape away from the plane where the tail tube and the side connection tube are located in the backward and forward direction.
9. The indwelling needle assembly of claim 6, wherein: an included angle A between the front end portion of the drainage tube and the rear end portion of the drainage tube satisfies: a is more than or equal to 125 degrees and less than or equal to 130 degrees.
10. The indwelling needle assembly of claim 6, wherein: the radius of curvature of the draft tube is between 5mm and 30mm, the diameter of the draft tube is gradually reduced in a direction from the rear end to the front end, and the extension length of the draft tube is between 5mm and 30 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920525506.2U CN210583275U (en) | 2019-04-17 | 2019-04-17 | Indwelling needle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920525506.2U CN210583275U (en) | 2019-04-17 | 2019-04-17 | Indwelling needle assembly |
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| Publication Number | Publication Date |
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| CN210583275U true CN210583275U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920525506.2U Active CN210583275U (en) | 2019-04-17 | 2019-04-17 | Indwelling needle assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112494750A (en) * | 2020-12-02 | 2021-03-16 | 潍坊医学院附属医院 | Venous indwelling needle anti-leakage device for nursing |
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2019
- 2019-04-17 CN CN201920525506.2U patent/CN210583275U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112494750A (en) * | 2020-12-02 | 2021-03-16 | 潍坊医学院附属医院 | Venous indwelling needle anti-leakage device for nursing |
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