CN212308576U - Self-sealing type venous indwelling needle - Google Patents
Self-sealing type venous indwelling needle Download PDFInfo
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- CN212308576U CN212308576U CN202021098249.8U CN202021098249U CN212308576U CN 212308576 U CN212308576 U CN 212308576U CN 202021098249 U CN202021098249 U CN 202021098249U CN 212308576 U CN212308576 U CN 212308576U
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Abstract
The utility model discloses a belong to and keep somewhere needle technical field, specifically be a proclaimed oneself formula vein and keep somewhere needle, connect including concentrating lumen, keeping somewhere pipe, puncture steel needle, handle, communicating pipe and outer closed joint, keep somewhere the union coupling in the left side of concentrating the lumen, the puncture steel needle is pegged graft in keeping somewhere the pipe, the left end of puncture steel needle extends to the left side of keeping somewhere the pipe, and this proclaiming oneself formula vein and keep somewhere the production method of needle specifically the step as follows: s1: the centralized tube cavity, the indwelling tube, the self-sealing liquid storage bag, the communicating tube and the external sealing joint are integrally formed by injection molding by medical plastics; the pipe sealing function is good; through the setting of depositing the bag from the liquid of proclaiming oneself, when the infusion, proclaiming oneself the inside normal saline that is full of liquid storage bag, when blood refluence to keeping somewhere intraductally, extrude blood leading-in blood vessel once more through the normal saline that will proclaiming oneself liquid storage bag inside, normal saline is full of and concentrates the lumen, keeps somewhere the pipe to make blood be difficult to the refluence.
Description
Technical Field
The utility model relates to an indwelling needle technical field specifically is a proclaim oneself formula vein indwelling needle.
Background
The use of remaining needle can reduce the misery that the infant caused because of relapse venipuncture and the fear of making a needle, alleviate the headings's anxiety, the clinical medicine of being convenient for, urgent, critical patient's rescue is used medicine, alleviate nurse's work load, it is painful to reduce the infant, therefore the vein is kept somewhere the needle and is being used widely in clinic, in the face of this special colony of infant, the length of vein is kept somewhere needle and the comfort of infant becomes nurse and the headings's problem of paying attention to, also is the prerequisite of sign and popularization that the needle of keeping somewhere was used successfully.
The venous indwelling needle does not need to be pulled out after the transfusion is finished and is used for the next transfusion, and the indwelling needle is blocked due to venous return blood after the transfusion is stopped, so the indwelling time is controversial, and health administration departments, hospital quality control departments and indwelling needle manufacturers advocate that the indwelling time is not more than 3-4 days.
The vein indwelling needle is used for blocking the catheter because blood reflows into the catheter cavity, blood coagulation substances such as blood platelets in the blood coagulate and form thrombus in the catheter with low flow rate, and the catheter is blocked by using a catheter blocking technology to prevent the catheter from being blocked in order to ensure that the catheter can be repeatedly used, and the catheter blocking technology is a special term in medical treatment and nursing science.
The existing pipe sealing mode is not good in operation, and is generally a pipe sealing mode, so that the safety is not high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a needle is kept somewhere to from formula of sealing vein to the current tube sealing mode operation that proposes in solving above-mentioned background art is not good, and is a tube sealing usually, the not high problem of security like this.
In order to achieve the above object, the utility model provides a following technical scheme: a self-sealing type venous indwelling needle comprises a centralized tube cavity, an indwelling tube, a puncture steel needle, a handle, a communicating pipe and an outer sealing joint, wherein the indwelling tube is connected to the left side of the centralized tube cavity, the puncture steel needle is inserted into the indwelling tube, the left end of the puncture steel needle extends to the left side of the indwelling tube, the right end of the puncture steel needle extends to the right side of the centralized tube cavity, the right end of the puncture steel needle is connected with the handle, the left end of the indwelling tube is provided with a soft flat tube head, the bottom of the centralized tube cavity is connected with a self-sealing liquid storage bag, the self-sealing liquid storage bag is communicated with the inner cavity of the centralized tube cavity, the inner cavity of the centralized tube cavity is provided with a sealing rubber block, the sealing rubber block is positioned on the right side of the self-sealing liquid storage bag, the puncture steel needle penetrates through the sealing rubber block, the upper surface of the centralized tube cavity is, the other end of the communicating pipe is connected with an external sealing joint.
Preferably, the centralized tube cavity, the indwelling tube, the self-sealing liquid storage bag, the communicating tube and the outer sealing joint are integrally formed by injection molding.
Preferably, the soft flat tube head is a rubber soft flat tube head, and the thickness of the soft flat tube head is 1/6-1/3 of the wall thickness of the indwelling tube.
Preferably, the self-sealing liquid storage bag is flat in an initial state in which internal air is extracted.
Preferably, two limiting check rings are arranged on the right side in the inner cavity of the centralized tube cavity and on the right side of the self-sealing liquid storage bag, and the closed rubber block is clamped between the two limiting check rings.
Preferably, the right side wall of the right limiting retainer ring is inclined and concaved leftwards.
Preferably, the outer sealing joint includes the closing cap on sleeve pipe top including interior sleeve pipe and spiro union, interior sheathed tube bottom and communicating pipe intercommunication, logical groove has been seted up at the middle part of closing cap, interior sheathed tube inner chamber is provided with the rubber buffer.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the soft flat tube head has the non-return function, so that blood cannot flow back into the indwelling tube, and a good tube sealing function is achieved;
2) through the setting of depositing the bag from the liquid of proclaiming oneself, when the infusion, proclaiming oneself the inside normal saline that is full of liquid storage bag, when blood refluence to keeping somewhere intraductally, extrude blood leading-in blood vessel once more through the normal saline that will proclaiming oneself liquid storage bag inside, normal saline is full of and concentrates the lumen, keeps somewhere the pipe to make blood be difficult to the refluence.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the puncture needle of the present invention being pulled out and separated from the indwelling tube;
FIG. 3 is a schematic view of the internal structure of the centralized tube cavity of the present invention;
fig. 4 is a schematic structural view of the external sealing joint of the present invention.
In the figure: 1 concentrated tube cavity, 2 indwelling tubes, 3 handles, 4 puncture steel needles, 5 soft flat tube heads, 6 self-sealing liquid storage bags, 7 limiting retainer rings, 8 sealing rubber blocks, 9 communicating tubes, 10 outer sealing joints, 101 inner sleeves, 102 sealing covers, 103 through grooves and 104 rubber plugs.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1-4, the present invention provides a technical solution: a self-sealing type venous indwelling needle comprises a centralized tube cavity 1, an indwelling tube 2, a puncture steel needle 4, a handle 3, a communicating pipe 9 and an outer sealing joint 10, wherein the indwelling tube 2 is connected on the left side of the centralized tube cavity 1, the puncture steel needle 4 is inserted into the indwelling tube 2, the left end of the puncture steel needle 4 extends to the left side of the indwelling tube 2, the right end of the puncture steel needle 4 extends to the right side of the centralized tube cavity 1, the right end of the puncture steel needle 4 is connected with the handle 3, the left end of the indwelling tube 2 is provided with a soft flat tube head 5, the bottom of the centralized tube cavity 1 is connected with a self-sealing liquid storage bag 6, the self-sealing liquid storage bag 6 is communicated with the inner cavity of the centralized tube cavity 1, the inner cavity of the centralized tube cavity 1 is provided with a sealing rubber block 8, the sealing rubber block 8 is positioned on the right side of the self-sealing liquid storage bag 6, and the puncture steel needle, the upper surface of the concentrated tube cavity 1 is connected with a communicating tube 9, the communicating tube 9 is communicated with the inner cavity of the concentrated tube cavity 1, and the other end of the communicating tube 9 is connected with an outer closed joint 10.
Further, the centralized tube cavity 1, the indwelling tube 2, the self-sealing liquid storage bag 6, the communicating tube 9 and the outer sealing joint 10 are integrally formed by injection molding.
Further, the soft flat tube head 5 is a rubber soft flat tube head, and the thickness of the soft flat tube head 5 is 1/6-1/3 of the wall thickness of the indwelling tube 2.
Further, the self-sealing liquid storage bag 6 is flat in an initial state in which internal air is extracted.
Furthermore, two limiting check rings 7 are arranged on the right side in the inner cavity of the centralized tube cavity 1 and on the right side of the self-sealing liquid storage bag 6, and the closed rubber block 8 is clamped between the two limiting check rings 7.
Furthermore, the right side wall of the right limiting retainer ring 7 is inclined and is concave towards the left.
Further, the outer sealing joint 10 comprises an inner sleeve 101 and a cover 102 screwed on the top end of the inner sleeve 101, the bottom end of the inner sleeve 101 is communicated with the communicating pipe 9, the middle of the cover 102 is provided with a through groove 103, and the inner cavity of the inner sleeve 101 is provided with a rubber plug 104.
A production method of a self-sealing venous indwelling needle comprises the following specific steps:
s1: the centralized tube cavity 1, the indwelling tube 2, the self-sealing liquid storage bag 6, the communicating tube 9 and the external sealing joint 10 are integrally formed by medical plastics through injection molding;
detecting the connection condition of the connection positions of the centralized tube cavity 1, the indwelling tube 2, the self-sealing liquid storage bag 6, the communicating tube 9 and the external sealing joint 10, carrying out unconnected waste treatment, and entering the next step after normal communication;
s2: the handle 3 is hot-melted on the puncture steel needle 4, and a closed rubber block 8 is embedded between the two limiting retainer rings 7;
s3: the respective structures in steps S1 and S2 are sterilized, the piercing steel needle 4 is inserted into the sealing rubber block 8, and then the self-sealing type vein retaining needle is encapsulated.
When in use, the centralized lumen 1 and the handle 3 are held by hands to connect the puncture steel needle 4 with the indwelling tube 2 and insert the puncture steel needle 4 into the blood vessel, and then the puncture steel needle 4 is drawn out from the indwelling tube 2 through the handle 3;
the right side of the centralized tube cavity 1 is still in a sealed state after the puncture steel needle 4 is drawn out through the arrangement of the sealing rubber block 8;
during infusion, an infusion needle penetrates through the through groove 103 and the rubber plug 104 and is communicated with the communicating pipe 9, a medicament enters a human blood vessel through the communicating pipe 9, the concentration tube cavity 1, the retention tube 2 and the soft flat tube head 5 to realize the effect of infusion, after infusion, the infusion needle is pulled out from the outer sealing joint 10, and the position of the outer sealing joint 10 is sealed through the arrangement of the rubber plug 104;
the soft flat tube head 5 receives the blood pressure in the blood vessel, so that the soft flat tube head 5 is in a closed state, and the transfusion medicament washes the soft flat tube head 5 open to allow the medicament to enter the blood vessel;
when the transfusion is not carried out, the soft flat tube head 5 returns to the closed state;
when blood breaks through the protection of the soft flat tube head 5 and enters the indwelling tube 2 and the centralized tube cavity 1, the medicament in the self-sealing liquid storage bag 6 is extruded out, the blood in the centralized tube cavity 1 and the indwelling tube 2 is extruded out and flows back to the blood vessel, and when the medicament in the self-sealing liquid storage bag 6 is transfusion, normal saline and the medicament are filled.
Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a needle is kept somewhere to self-sealing formula vein, includes concentrated lumen (1), keeps somewhere pipe (2), puncture steel needle (4), handle (3), communicating pipe (9) and outer sealing joint (10), its characterized in that: the indwelling tube (2) is connected to the left side of the centralized tube cavity (1), the puncture steel needle (4) is inserted into the indwelling tube (2), the left end of the puncture steel needle (4) extends to the left side of the indwelling tube (2), the right end of the puncture steel needle (4) extends to the right side of the centralized tube cavity (1), the right end of the puncture steel needle (4) is connected with the handle (3), the left end of the indwelling tube (2) is provided with the soft flat tube head (5), the bottom of the centralized tube cavity (1) is connected with the self-sealing liquid storage bag (6), the self-sealing liquid storage bag (6) is communicated with the inner cavity of the centralized tube cavity (1), the inner cavity of the centralized tube cavity (1) is provided with the sealing rubber block (8), the sealing rubber block (8) is positioned on the right side of the self-sealing liquid storage bag (6), and the puncture steel needle (4) penetrates through the sealing rubber block (8), the upper surface of concentrating lumen (1) is connected with communicating pipe (9), communicating pipe (9) and the inner chamber intercommunication of concentrating lumen (1), the other end of communicating pipe (9) is connected with outer sealing joint (10).
2. The self-sealing venous indwelling needle of claim 1, wherein: the integrated injection molding is carried out among the centralized tube cavity (1), the indwelling tube (2), the self-sealing liquid storage bag (6), the communicating tube (9) and the external sealing joint (10).
3. The self-sealing venous indwelling needle of claim 1, wherein: the soft flat pipe head (5) is a rubber soft flat pipe head, and the thickness of the soft flat pipe head (5) is 1/6-1/3 of the wall thickness of the indwelling pipe (2).
4. The self-sealing venous indwelling needle of claim 1, wherein: the initial state of the self-sealing liquid storage bag (6) is a flat shape with the internal air extracted.
5. The self-sealing venous indwelling needle of claim 1, wherein: two limiting check rings (7) are arranged on the right side in the inner cavity of the centralized tube cavity (1) and on the right side of the self-sealing liquid storage bag (6), and the sealing rubber block (8) is clamped between the two limiting check rings (7).
6. The self-sealing venous indwelling needle of claim 5, wherein: the right side wall of the right limiting retainer ring (7) is inclined and is concave towards the left.
7. The self-sealing venous indwelling needle of claim 1, wherein: outer sealing joint (10) including interior sleeve pipe (101) and spiro union sleeve pipe (101) top closing cap (102), the bottom and communicating pipe (9) intercommunication of interior sleeve pipe (101), logical groove (103) have been seted up at the middle part of closing cap (102), the inner chamber of interior sleeve pipe (101) is provided with rubber buffer (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021098249.8U CN212308576U (en) | 2020-06-15 | 2020-06-15 | Self-sealing type venous indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021098249.8U CN212308576U (en) | 2020-06-15 | 2020-06-15 | Self-sealing type venous indwelling needle |
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| Publication Number | Publication Date |
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| CN212308576U true CN212308576U (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021098249.8U Active CN212308576U (en) | 2020-06-15 | 2020-06-15 | Self-sealing type venous indwelling needle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111529813A (en) * | 2020-06-15 | 2020-08-14 | 盐城市雅思医疗科技有限公司 | Self-sealing type venous indwelling needle and production method thereof |
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- 2020-06-15 CN CN202021098249.8U patent/CN212308576U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111529813A (en) * | 2020-06-15 | 2020-08-14 | 盐城市雅思医疗科技有限公司 | Self-sealing type venous indwelling needle and production method thereof |
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