CN209933684U - In-situ active blood return remaining needle - Google Patents
In-situ active blood return remaining needle Download PDFInfo
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- CN209933684U CN209933684U CN201920432414.XU CN201920432414U CN209933684U CN 209933684 U CN209933684 U CN 209933684U CN 201920432414 U CN201920432414 U CN 201920432414U CN 209933684 U CN209933684 U CN 209933684U
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- needle
- hose
- negative pressure
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- holding handle
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Abstract
An in-situ active blood return indwelling needle comprises an indwelling hose, a steel needle, a hose seat, an isolating plug and a needle seat, wherein the needle seat comprises a base, a connecting plate and a needle holding handle; the needle holding handle is hollow, a negative pressure elastic capsule is arranged in the needle holding handle, a pressing handle capable of moving along the inner wall of the needle holding handle is arranged at the top of the negative pressure elastic capsule, and the pressing handle extends out of the needle holding handle; the connecting plate is provided with a connecting channel, and the negative pressure elastic capsule is communicated with the limiting hole through the connecting channel. The utility model discloses well negative pressure elasticity capsule, interface channel, spacing hole and steel needle intercommunication, during the venous transfusion puncture, produce the negative pressure in the negative pressure elasticity capsule, venous blood is because the negative pressure effect, gets into through the steel needle rapidly and keeps somewhere in hose and the hose seat, and whether the snap judgments puncture succeeds, improves clinical puncture success rate.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to needle is kept somewhere to normal position initiative blood return.
Background
With the invention of indwelling needles, the traditional venous transfusion tool scalp needle is gradually replaced, and the process has a long history. Keep somewhere needle not only can improve clinical medical personnel's work efficiency, can effectively protect patient venous vessel's injury moreover, reduce the fear sense that venipuncture brought. With the coming of new national policies, steel needle-free infusion becomes the focus of modern infusion, and indwelling needles will play an increasingly important role in the future infusion process.
However, with the gradual trend of the aging of the country and the advocated policy of the country, the elderly and the younger children become the people with the largest social population. When the two people are in transfusion, the blood pressure of the two people is lower due to the body and physiological reasons. The observation of blood return is a main judgment basis for clinical medical staff to determine whether the puncture is successful. When the indwelling needle is used for venipuncture, the group often shows slow blood return, troubles are caused on whether the puncture is successful or not by clinical medical care personnel, the puncture is failed due to frequent misjudgment, and the medical expense and the tension of doctor-patient relationship are increased. How to judge the blood return quickly and accurately and facilitate the clinical puncture becomes a focus problem in the current clinical application.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the in-situ active blood return indwelling needle is provided, on the basis of not changing the traditional scalp needle puncture technique, the in-situ active blood return is realized, whether the puncture is successful or not is quickly judged, the success rate of clinical puncture is improved, the medical cost is saved, and the tension of doctors and patients is reduced.
The utility model discloses the technical scheme who takes does:
an in-situ active blood return indwelling needle comprises an indwelling hose, a steel needle, a hose seat, an isolating plug and a needle seat, wherein the indwelling hose is arranged at the top of the hose seat, the isolating plug is arranged in the hose seat, the needle seat is matched with the lower part of the hose seat, the steel needle is arranged in the hose seat, the top of the steel needle extends out of the indwelling hose, the bottom of the steel needle is arranged in the needle seat, the steel needle sequentially penetrates through the indwelling hose and the isolating plug, the needle seat comprises a base, a connecting plate and a needle holding handle, the base is fixedly connected with the needle holding handle through the connecting plate, the steel needle is arranged in the base, a limiting hole is arranged at the lower part of the base, and the limiting hole is arranged below the steel needle and communicated with the steel needle; the needle holding handle is hollow, a negative pressure elastic capsule is arranged in the needle holding handle, a pressing handle capable of moving along the inner wall of the needle holding handle is arranged at the top of the negative pressure elastic capsule, and the pressing handle extends out of the needle holding handle; the connecting plate is provided with a connecting channel, and the negative pressure elastic capsule is communicated with the limiting hole through the connecting channel.
The limiting hole is a blind hole, and the aperture of the limiting hole is smaller than the outer diameter of the steel needle.
The connecting channel is a through hole arranged in the connecting plate, and the shape of the through hole corresponds to that of the connecting plate.
The bottom of the pressing handle is provided with a buckle, and the top of the needle holding handle is provided with a reverse buckle matched with the buckle.
The side of the hose seat is provided with a positioning groove, the connecting plate is provided with a connecting sheet matched with the positioning groove, and the connecting sheet is clamped in the positioning groove.
The thickness of the needle holding handle is smaller than the diameter of the bottom end of the hose seat.
The utility model discloses well negative pressure elasticity capsule and spacing hole are through the interface channel intercommunication, spacing hole and steel needle intercommunication, negative pressure elasticity capsule, interface channel, spacing hole and steel needle intercommunication promptly, when pressing the handle extrusion negative pressure elasticity capsule, the air in the negative pressure elasticity capsule is discharged from the top of steel needle, when the venous transfusion puncture, loosen and press the handle, produce the negative pressure in the negative pressure elasticity capsule, venous blood is because the negative pressure effect, rapidly get into through the steel needle and keep somewhere in hose and the hose seat, judge whether the puncture succeeds fast, improve clinical puncture success rate, save medical expenses and reduce doctor-patient relationship tension; the aperture of the limiting hole is smaller than the outer diameter of the steel needle, so that the steel needle is prevented from falling into the limiting hole and blocking the connecting channel; the top of the needle holding handle is provided with a reverse buckle matched with the buckle to prevent the pressing handle from completely falling out of the needle holding handle; the matching of the positioning groove and the connecting sheet increases the firmness of the connection of the hose seat and the needle seat, and ensures that the position of the indwelling hose and the steel needle is fixed during puncture.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the middle negative pressure elastic capsule of the present invention in a normal state;
FIG. 3 is a cross-sectional view of the middle negative pressure elastic capsule of the present invention in a compressed state;
fig. 4 is a schematic structural view of the hose holder.
Detailed Description
As shown in fig. 1-4, an in-situ active blood-returning indwelling needle comprises an indwelling hose 9, a steel needle 10, a hose seat 11, an isolating plug 15 and a needle seat 7, wherein the indwelling hose 9 is arranged at the top of the hose seat 11, the bottom of the indwelling hose 9 is arranged in the hose seat 11 and fixedly connected with the hose seat 11, the isolating plug 15 is arranged in the hose seat 11, the isolating plug 15 is tightly matched with the hose seat 11, the needle seat 7 is matched with the lower part of the hose seat 11, the steel needle 10 is arranged in the hose seat 11, the top of the steel needle 10 extends out of the indwelling hose 9, the bottom of the steel needle 10 is arranged in the needle seat 7, the steel needle 10 sequentially penetrates through the hose 9 and the isolating plug 15, a rivet 14 is arranged at the lower part of the indwelling hose 9, the rivet 14 is arranged at the hose seat 11 and communicated with an extension tube 3 at the side of the hose seat 11, a flow stopping clip 4 is arranged on the extension tube 3, a tee joint 2 is connected, the two free ends of the three-way pipe 2 are respectively provided with a heparin cap 1 and an antibacterial cap 12, which are the prior art and are not described in detail herein.
The needle seat 7 comprises a base 70, a connecting plate 71 and a needle holding handle 72, the base 70 is fixedly connected with the needle holding handle 72 through the connecting plate 71, the steel needle 10 is arranged in the base 70, the lower part of the base 70 is provided with a limiting hole 5, and the limiting hole 5 is arranged below the steel needle 10 and communicated with the steel needle 10; the needle holding handle 72 is hollow, a negative pressure elastic capsule 6 is arranged in the needle holding handle 72, a pressing handle 8 capable of moving along the inner wall of the needle holding handle 72 is arranged at the top of the negative pressure elastic capsule 6, the pressing handle 8 extends out of the needle holding handle 72, an opening is arranged at the top of the needle holding handle 72, and the pressing handle 8 extends out of the needle holding handle 72 through the opening; the connecting plate 71 is provided with a connecting channel 710, and the negative pressure elastic capsule 6 is communicated with the limiting hole 5 through the connecting channel 710.
The limiting hole 5 is a blind hole, the aperture of the limiting hole 5 is smaller than the outer diameter of the steel needle 10, and the steel needle 10 is prevented from falling into the limiting hole 5 and blocking the connecting channel 710.
The connection passage 710 is a through hole provided in the connection plate 71, and the shape of the through hole corresponds to the shape of the connection plate 71.
The bottom of the pressing handle 8 is provided with a buckle, the top of the needle holding handle 72 is provided with a reverse buckle matched with the buckle, and when the pressing handle 8 moves to the upper part of the needle holding handle 72, the buckle is matched with the reverse buckle to avoid the pressing handle 8 from being completely separated.
The side of the hose seat 11 is provided with a positioning groove 13, the positioning groove 13 is provided with a connecting sheet matched with the positioning groove 13 on the connecting plate 71, the connecting sheet is clamped in the positioning groove 13, the firmness of connection between the hose seat 11 and the needle seat 7 is increased, and the hose 9 and the steel needle 10 are kept fixed during puncture.
The thickness of the needle holder 72 is smaller than the diameter of the bottom end of the hose holder 11.
Before the intravenous infusion puncture is prepared, the needle handle 72 is held tightly by the thumb and the forefinger of the right hand, the needle handle is withdrawn backwards by 5mm, the hose seat 11 is held by the left hand and rotated for several times, the indwelling hose 9 and the steel needle 10 are ensured not to be adhered, and then the needle seat 7 is pushed forwards. Before puncture, the lower extreme of base 70 is held between the fingers to the thumb, and the forefinger presses the pressing handle 8, extrudes negative pressure elasticity capsule 6, begins to compress, extrudes the air of negative pressure elasticity capsule 6 to spacing hole 5 in, and gas gets into steel needle 10 through the cavity of spacing hole 5, then discharges from the top of steel needle 10.
When the venous transfusion is punctured, the skin is tightened by the thumb and the forefinger of the left hand, veins are displayed, the forefinger of the right hand presses the pressing handle 8 to discharge air in the negative pressure elastic capsule 6, then the needle is inserted to break the skin, the forefinger slightly looses the pressing handle 8, the negative pressure elastic capsule 6 starts to recover, simultaneously, the inner cavity of the negative pressure elastic capsule 6 is in a negative pressure state, the steel needle 10 is communicated with the negative pressure elastic capsule 6, therefore, negative pressure is also generated in the steel needle 10, venous blood rapidly enters the hose 9 and the hose seat 11 through the steel needle 10 due to the negative pressure state in the steel needle 10, and the steel needle 10 is proved to enter the venous blood vessel.
When the venous transfusion tube is placed, the thumb and the forefinger of the right hand hold the needle handle 72 and withdraw backwards by 1-2mm, the hose seat 11 is held by the left hand, the indwelling hose 9 is delivered to the venous vessel, then the thumb and the forefinger of the right hand hold the needle handle 72 and withdraw completely, the tube placement is completed, and the hose seat 11 and the tee joint 2 are fixed by the application.
In the operation process, the invention carries out multi-angle flexible needle insertion through the traditional needle holding mode of the scalp needle, and is particularly suitable for patients with thin blood vessels in pediatrics. The invention has simple and convenient operation, is rapid, safe and reliable, is easy for later-stage mold development and production processing, effectively solves the misjudgment phenomenon caused by the problems of slow blood return, no blood return and the like in clinic, and greatly improves the success rate of clinic catheterization and puncture.
The invention has various implementation modes, such as improving the communication between the bottom end of the hose seat 11 and the bottom end of the needle seat 7 through a thin tube, and realizing the in-situ active blood return caused by the negative pressure state; if the needle seat 7 is changed into a compressible soft material, the in-situ active blood return caused by the negative pressure state is realized; such as active blood return in situ, by implementing a negative pressure state on the extension tube 3 by pressing a small balloon, etc. All the technical schemes of changing by adopting equivalent structure transformation, equivalent invention principles, increasing and decreasing structural accessories, appearance, structural positions and the like belong to the protection scope of the invention.
Claims (6)
1. The utility model provides a needle is kept somewhere to normal position initiative blood return, is including keeping somewhere hose, steel needle, hose seat, isolation stopper and needle file, keeps somewhere the hose setting at the top of hose seat, keeps apart the stopper setting in hose seat, and the needle file cooperates with the lower part of hose seat, and the steel needle setting is in hose seat, and the top of steel needle extends to and keeps somewhere outside the hose, and the bottom setting of steel needle is in the needle file, and the steel needle runs through in proper order and keeps somewhere hose and isolation stopper, its characterized in that: the needle seat comprises a base, a connecting plate and a needle holding handle, the base and the needle holding handle are fixedly connected through the connecting plate, the steel needle is arranged in the base, a limiting hole is arranged at the lower part of the base, and the limiting hole is arranged below the steel needle and communicated with the steel needle; the needle holding handle is hollow, a negative pressure elastic capsule is arranged in the needle holding handle, a pressing handle capable of moving along the inner wall of the needle holding handle is arranged at the top of the negative pressure elastic capsule, and the pressing handle extends out of the needle holding handle; the connecting plate is provided with a connecting channel, and the negative pressure elastic capsule is communicated with the limiting hole through the connecting channel.
2. The in situ active blood return indwelling needle of claim 1, wherein: the limiting hole is a blind hole, and the aperture of the limiting hole is smaller than the outer diameter of the steel needle.
3. The in situ active blood return indwelling needle of claim 1, wherein: the connecting channel is a through hole arranged in the connecting plate, and the shape of the through hole corresponds to that of the connecting plate.
4. The in situ active blood return indwelling needle of claim 1, wherein: the bottom of the pressing handle is provided with a buckle, and the top of the needle holding handle is provided with a reverse buckle matched with the buckle.
5. The in situ active blood return indwelling needle of claim 1, wherein: the side of the hose seat is provided with a positioning groove, the connecting plate is provided with a connecting sheet matched with the positioning groove, and the connecting sheet is clamped in the positioning groove.
6. The in situ active blood return indwelling needle of claim 1, wherein: the thickness of the needle holding handle is smaller than the diameter of the bottom end of the hose seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920432414.XU CN209933684U (en) | 2019-04-02 | 2019-04-02 | In-situ active blood return remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920432414.XU CN209933684U (en) | 2019-04-02 | 2019-04-02 | In-situ active blood return remaining needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209933684U true CN209933684U (en) | 2020-01-14 |
Family
ID=69126694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920432414.XU Active CN209933684U (en) | 2019-04-02 | 2019-04-02 | In-situ active blood return remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209933684U (en) |
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2019
- 2019-04-02 CN CN201920432414.XU patent/CN209933684U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Mingxue Inventor after: Chen Yongshuai Inventor after: Cheng Lingling Inventor after: Yang Qiong Inventor after: Zhao Pengyu Inventor before: Zhao Mingxue |
|
| CB03 | Change of inventor or designer information |