CN201500348U - Syringe with easy emergence of blood return - Google Patents
Syringe with easy emergence of blood return Download PDFInfo
- Publication number
- CN201500348U CN201500348U CN2009201639553U CN200920163955U CN201500348U CN 201500348 U CN201500348 U CN 201500348U CN 2009201639553 U CN2009201639553 U CN 2009201639553U CN 200920163955 U CN200920163955 U CN 200920163955U CN 201500348 U CN201500348 U CN 201500348U
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- CN
- China
- Prior art keywords
- plunger tube
- card
- syringe
- urceolus
- blood return
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a syringe with easy emergence of blood return, which comprises an outer tube of the syringe and a plunger tube, wherein the plunger tube is hermetically arranged in the outer tube, a flange is arranged at the back end of the outer tube, at least one card is arranged on the flange of the outer tube, a card slot which is correspondingly matched with the card is formed on the plunger tube, when carrying out vacuum suction, the card is clamped in the card slot for preventing the plunger tube from returning to initial position, thereby keeping a certain vacuum degree; and an operator also can simply lead the plunger tube to return to the initial position at random and eliminate vacuum. The technical scheme can manufacture the vacuum in a syringe tube, lead a blood return phenomenon to occur, improve the accuracy of clinical work, simplify operation and reduce the human burden of medical staff.
Description
Technical field
This utility model relates to medical instruments field, is specifically related to a kind of easy viewing blood return syringe.
Background technology
In medical intravenous injection, the operator judges whether intravasation of syringe needle by blood back, and in practice, blood back is not obvious sometimes, particularly for old person, make the operator be difficult to judge whether intravasation of syringe needle, or cause erroneous judgement to repeat the misery that inserting needle increases the patient.In order to address this is that, at present, when puncturing at above-mentioned intravenous injection, usually need two compounding practices, i.e. people director puncture, one man operation syringe in addition aspirates the plunger tube of syringe backward, make the inner vacuum that forms of plunger tube, cause bigger manpower burden to medical work; In order to solve the problem of existence, a kind of easy viewing blood return syringe need be set, can be alone just can operate.Chinese patent title " syringe for producing vaccum-controlled suction ", the patent No.: CN86104478, a kind of scheme that is used to aspirate puncture is disclosed, can solve the problem that forms vacuum and easily see blood, but its interlocking structure is to fix by rotation, operation is complicated, still needs two people to operate, and still can not well solve the manpower burden problem of medical work.
The utility model content
A kind of easy viewing blood return syringe of this utility model, this syringe can make easily and blood back occur, and simple in structure, easy to operate, only need one man operation to carry out.
In order to solve the problems of the technologies described above, a kind of easy viewing blood return syringe of this utility model, a kind of easy viewing blood return syringe, include syringe urceolus and plunger tube, the airtight inside that is arranged on urceolus of plunger tube, the rear end of urceolus is provided with the convex edge, on the urceolus convex edge, be provided with at least one card, have draw-in groove on the plunger tube with the card corresponding matching, card blocks draw-in groove and prevents that plunger tube from returning to initial position when carrying out vacuum draw, keep certain vacuum, the operator also can be arbitrarily and is made plunger tube get back to initial position simply and eliminate vacuum.
Adopt the easy viewing blood return syringe of technique scheme, owing on axial urceolus convex edge, be provided with card perpendicular to urceolus, have draw-in groove on the plunger tube with the card corresponding matching, in case block, the front end that can guarantee syringe keeps certain vacuum, because the negative pressure of vacuum that needs is very little, so it is enough that a card is set, big if desired negative pressure of vacuum, only need to change card material and quantity get final product.In the time of concrete operations, the operator can hold the arm that needs intravenous injection person with left hand earlier, the right hand is held syringe needle, earlier the syringe needle puncture is entered in the human body subcutaneous layer of fat, make the front end of syringe enter air-tight state, the right hand continues to hold syringe needle, in order to avoid syringe needle moves, the left-handed operation syringe, the plunger tube of syringe is aspirated backward, plunger tube contacts backward relative to the card of urceolus and moves, card is the elastic film that can produce certain distortion, the toughness of elastic film dependence self material is blocked draw-in groove and is prevented that plunger tube from returning to initial position, keep certain vacuum, the reuse left hand is held the arm that needs intravenous injection person, the right hand carries out the syringe needle puncture again and enters vein blood vessel, in case intravasation, under the pull of vacuum effect of syringe, easily endovascular blood is pumped out, help the operator and judge whether to have punctured into blood vessel, and then overcome the support force of elastic film, with operations such as the plunger tube of syringe promote forward to inject with external force, realize that a people just can complete operation, solve the manpower burden problem of medical work.
Further, it is trapezoidal to limit being shaped as of described card, and this is because trapezoidal card blocks the plunger tube seat easily, and makes simple, fixing easily.
Same reason, for convenience fixing and make, make that card is easier to be snapped in the draw-in groove, restriction is trapezoidal with draw-in groove on the plunger tube that card cooperates at the axial section of plunger tube, and trapezoid opening is outwardly.
Further, limit and all have a draw-in groove on the plunger tube on a plurality of planes, described plane is axial perpendicular to plunger tube, can adjust setting according to different vacuum needs, makes the card of the corresponding urceolus of draw-in grooves different on the plunger tube.
Further, limit the concrete connected mode that is installed in the trapezoidal card on the urceolus, card is bonded on the end face of urceolus convex edge, the less distal process of card is gone in the urceolus, advantages such as such mounting means has simple to operation, and stationarity is good, and the support force of card is strong.
Description of drawings
Below in conjunction with drawings and Examples technical solutions of the utility model are further specified:
Fig. 1 is this utility model structural profile sketch map;
Fig. 2 is the vertical view of Fig. 1.
The specific embodiment
As Fig. 1, shown in Figure 2, this utility model, a kind of easy viewing blood return syringe, include syringe urceolus 1 and plunger tube 2, the plunger tube 2 airtight inside that are arranged on urceolus 1, the rear end of urceolus 1 is provided with convex edge 3, urceolus convex edge 3 end faces are axial perpendicular to urceolus 1, trapezoidal card 4 of bonding on the end face of urceolus convex edge 3, and card 4 less distal process are gone in the urceolus 1, on plunger tube 2, be provided with a draw-in groove 5, draw-in groove 5 and card 4 corresponding matching perpendicular to a plurality of planes of axially going up of plunger tube 2, draw-in groove 5 is trapezoidal at the axial section of plunger tube, trapezoid opening outwardly, when carrying out vacuum draw, card 4 blocks draw-in groove 5 and prevents that plunger tube 2 times is to initial position, keep certain vacuum, the operator also can be arbitrarily and is made plunger tube 2 get back to initial position simply and eliminate vacuum.
In the time of concrete operations, the operator can hold the arm that needs intravenous injection person with left hand earlier, the right hand is held the syringe needle (not shown) that is sealedly connected on syringe interface 6, earlier the syringe needle puncture is entered in the human body subcutaneous layer of fat, make the front end of syringe enter air-tight state, the right hand continues to hold syringe needle, in order to avoid syringe needle moves, the left-handed operation syringe, the plunger tube 2 of syringe is aspirated backward, plunger tube 2 contacts backward relative to the card 4 of urceolus and moves, card 4 is the elastic films that can produce certain distortion, elastic film relies on the toughness of self material to block draw-in groove 5 and prevents that plunger tube 2 times is to initial position, keep certain vacuum, the reuse left hand is held the arm that needs intravenous injection person, the right hand carries out the syringe needle puncture again and enters vein blood vessel, in case intravasation, under the pull of vacuum effect of syringe, easily endovascular blood is pumped out, help the operator and judge whether to have punctured into blood vessel, and then overcome the support force of elastic film, with operations such as the plunger tube of syringe promote forward to inject with external force, all operation only need a people to carry out just can complete operation, solve the manpower burden problem of medical work.
This utility model is simple in structure easy to operate, and easy for looking back flow of blood has improved the accuracy of clinical treatment work, has reduced medical work manpower burden.
Claims (5)
1. easy viewing blood return syringe, include syringe urceolus (1) and plunger tube (2), the airtight inside that is arranged on urceolus (1) of plunger tube (2), the rear end of urceolus (1) is provided with convex edge (3), it is characterized by: on urceolus (1) convex edge (3), be provided with at least one card (4), have draw-in groove (5) on the plunger tube (2) with card (4) corresponding matching, card when carrying out vacuum draw (4) blocks draw-in groove (5) and prevents that plunger tube (2) from returning to initial position, keep certain vacuum, the operator also can be arbitrarily and is made plunger tube (2) get back to initial position simply and eliminate vacuum.
2. a kind of easy viewing blood return syringe according to claim 1 is characterized by: described card (4) is for trapezoidal.
3. a kind of easy viewing blood return syringe according to claim 1 is characterized by: the draw-in groove (5) on the described plunger tube (2) is trapezoidal at the axial section of plunger tube (2), and trapezoid opening outwardly.
4. a kind of easy viewing blood return syringe according to claim 1 is characterized by: described plunger tube (2) is gone up and all have a draw-in groove (5) on a plurality of plane, a plurality of planes all perpendicular to plunger tube (2) axially.
5. a kind of easy viewing blood return syringe according to claim 1 and 2 is characterized by: described card (4) is bonded on the end face of urceolus convex edge (3), and the less distal process of card (4) is gone in the urceolus (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201639553U CN201500348U (en) | 2009-07-10 | 2009-07-10 | Syringe with easy emergence of blood return |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201639553U CN201500348U (en) | 2009-07-10 | 2009-07-10 | Syringe with easy emergence of blood return |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201500348U true CN201500348U (en) | 2010-06-09 |
Family
ID=42451291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201639553U Expired - Fee Related CN201500348U (en) | 2009-07-10 | 2009-07-10 | Syringe with easy emergence of blood return |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201500348U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111658243A (en) * | 2020-06-15 | 2020-09-15 | 上海长海医院 | Intraoperative feeding bone grafting device |
| CN113573749A (en) * | 2019-03-13 | 2021-10-29 | 财团法人峨山社会福祉财团 | Medical syringe |
-
2009
- 2009-07-10 CN CN2009201639553U patent/CN201500348U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113573749A (en) * | 2019-03-13 | 2021-10-29 | 财团法人峨山社会福祉财团 | Medical syringe |
| CN111658243A (en) * | 2020-06-15 | 2020-09-15 | 上海长海医院 | Intraoperative feeding bone grafting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20120710 |