CN203060463U - Transfusion needle point preventing blood backflow and liquid medicine emptying - Google Patents
Transfusion needle point preventing blood backflow and liquid medicine emptying Download PDFInfo
- Publication number
- CN203060463U CN203060463U CN 201320069289 CN201320069289U CN203060463U CN 203060463 U CN203060463 U CN 203060463U CN 201320069289 CN201320069289 CN 201320069289 CN 201320069289 U CN201320069289 U CN 201320069289U CN 203060463 U CN203060463 U CN 203060463U
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- China
- Prior art keywords
- needle point
- spring
- hollow pipe
- garter
- throttle flap
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Abstract
The utility model discloses a transfusion needle point preventing blood backflow and liquid medicine emptying, belongs to the technical field of medical instruments, and solves the technical problems of blood backflow and liquid medicine emptying after transfusion. The transfusion needle point comprises a syringe point end, a hollow tube, a spring, a throttling baffle and a protective sleeve, wherein the throttling baffle is located in the hollow tube, and the position at the outer edge of the throttling baffle is movably connected with the tube wall of the hollow tube; and the spring is located in the hollow tube, the starting end of the spring is fixedly connected with the throttling baffle, and the tail end is fixedly connected with the tube wall of the hollow tube. The transfusion needle point disclosed by the utility model is suitable for being used in transfusion for various patients, and has a wide application.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, in particular, is a kind of garter needle point that can prevent the blood backflow and can prevent the medicinal liquid emptying.
Background technology
Venous transfusion is a kind of common methods for the treatment of disease, patient is accepting injection, after medicinal liquid all is totally lost, bubble can enter human body by tube for transfusion, causes serious consequence, and blood can be back to tube for transfusion from needle point after perhaps finishing to injection, blood in the tube for transfusion can solidify at ambient temperature, if continue to human transfusion, the blood that then solidifies can enter human body with medicinal liquid, produces serious consequence.
At the problems referred to above, present settling mode is the height raising with infusion bottle, increased the pressure that syringe needle goes out, make this place's pressure greater than human blood-pressure, thereby stop blood to reflux, but improve the method for infusion bottle, further strengthen the emptying of tube for transfusion inner liquid medicine, this deficiency that can not stop bubble to enter human body, and after the medicinal liquid emptying in the garter, blood can be back in the garter.
Summary of the invention
In order to solve the deficiency of above-mentioned technology, this utility model provides a kind of garter needle point, and it can prevent that blood from refluxing, and can prevent the emptying of tube for transfusion inner liquid medicine again.
The technical scheme in the invention for solving the technical problem is:
A kind of garter needle point that prevents the blood backflow and can prevent the medicinal liquid emptying mainly is made up of injection tip, hollow pipe, spring, throttle flap and protective sleeve.Throttle flap is positioned at hollow pipe, has the tube wall of a place and hollow pipe to flexibly connect on its outer, and spring is positioned at hollow pipe, fixedlys connected with throttle flap in its top, and its end is fixedlyed connected with the tube wall of hollow pipe.
Described spring near the most advanced and sophisticated the same side of injection or with the most advanced and sophisticated opposite side of injection.
Described spring can replace with the elasticity tie rod, and described elasticity tie rod is rubber band.
There is a ring protection cover outer of described throttle flap, and described protective sleeve is rubber material or plastic material.
Described protective sleeve also can be positioned on the hollow pipe inwall.
The diameter of described spring is less than the diameter of hollow pipe, but greater than 1/4th of hollow pipe diameter.
The end of described flexible connection point and spring point-blank.
The top of described spring is positioned at the center of throttle flap.
The end of described spring can be in the optional position of tube wall.
The top of described spring also can be positioned at the optional position on the throttle flap.
Garter needle point with above structure, in use, liquid flow is by the hollow pipe of needle point, and the effect that throttle flap is subjected to hydraulic pressure stretches or the compression spring, spring stress deformation, and then open throttle flap, make liquid flow through.
When the tube for transfusion inner liquid medicine more after a little while, namely a lateral pressure of throttle flap diminishes, under the effect of spring, throttle flap resets, and with this channel seal, and then stops the medicinal liquid emptying, thereby prevents that bubble from entering human body, prevents that again blood from entering tube for transfusion simultaneously.
The beneficial effects of the utility model are:
By throttle flap is set, human body and tube for transfusion both sides are kept apart, can prevent that blood from refluxing, and can prevent the emptying of tube for transfusion inner liquid medicine again.
Description of drawings
Below in conjunction with accompanying drawing this utility model is further specified.
Fig. 1 is the non-working condition sketch map of this utility model preferred embodiments.
Fig. 2 for this utility model preferred embodiments have medicinal liquid to flow through the time sketch map.
Fig. 3 shows the non-working condition intention for second kind of embodiment of this utility model.
The specific embodiment
Provide this utility model preferred embodiments below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.
As shown in Figure 1, this utility model mainly is made up of injection tip 1, hollow pipe 2, spring 3, throttle flap 4 and protective sleeve 5, and described spring also comprises a top 31 and an end 32, has one to flexibly connect point 6 between described throttle flap 4 and the hollow pipe 2.
Spring is near the most advanced and sophisticated reverse side of injection; namely near tube for transfusion one side; the end of spring is welded on the tube wall of hollow pipe; top is welded on the throttle flap; it is preferably the center of throttling plectane; when throttle flap is circle; it is its center of circle; and the throttle flap diameter is less than the diameter of hollow pipe; but after adding the ring protection cover in its outside, whole slightly larger in diameter is in the hollow pipe diameter, when non-working condition; the elastic force of spring can make throttle flap perpendicular to hollow pipe, thereby seals this hollow pipe.Described ring protection cover can be fixed on the outer of throttle flap, also can be fixed on the inner tubal wall of hollow pipe.
The end of spring all is positioned on the tube wall of hollow pipe with the flexible connection point, and point-blank, after spring was stretched, medicinal liquid had more space to pass through like this, and the diameter of spring is 1/4th to 1/2nd of hollow pipe diameter.
As shown in Figure 2, when medicinal liquid flows through, liquid flow produces pressure, and when pressure was higher, fluid column can push throttle flap, and then extension spring, spring produces deformation, and then has the slit to make liquid flow through between throttle flap and tube wall, after the pressure increasing of liquid, its slit is also strengthened, and makes medicinal liquid pass through smoothly.
After fluid pressure diminishes, be that medicinal liquid conveying soon finishes, under the effect of spring, throttle flap slowly resets, and then complete seal channel, the passage after the sealing is kept apart human body one side and tube for transfusion one side, blood can not enter tube for transfusion, and the bubble in the tube for transfusion can not enter human body simultaneously.
It is the rated value of baffle plate On/Off that the pulling force of spring or rubber band can just make the tube for transfusion fluid column be positioned at tube for transfusion gas bag place, namely when the fluid column of tube for transfusion is worth greater than this, the pressure that fluid column produces is greater than the active force of spring or rubber band, and baffle plate is opened, and medicinal liquid can inject human body; When fluid column was worth less than this, the pressure that fluid column produces was less than the active force of spring or rubber band, the baffle plate closure, and medicinal liquid can not enter human body.
Make the interior fluid column of tube for transfusion be stabilized in the gas bag place of tube for transfusion like this, prevented that fluid column from continuing to descend, just prevented that namely garter from emptying to below the gas bag, just prevented that naturally bubble from entering human body.When also having a beneficial effect to be to continue transfusion behind the medicine bottle to be changed in addition, need not the bubble that the medical worker manually discharges tube for transfusion gas bag below.
Second embodiment of this utility model:
As shown in Figure 3, the difference with preferred embodiments is that spring is positioned at the same side with the injection tip, after medicinal liquid flows through, promote throttle flap like this, and then the compression spring produces deformation, making has the slit between the tube wall of throttle flap and hollow pipe, allows medicinal liquid to flow through.In this case, the distance that the end of spring is most advanced and sophisticated with injection〉1mm, guarantee that spring is positioned at hollow pipe.
The 3rd embodiment of this utility model:
According to the needs of actual transfusion speed, need transfusion as early as possible in the time of as some, some medicinal liquid then can not be infused fast.The top of spring and the welding position of throttle flap can select on the throttle flap more arbitrarily, in the time of close to spring top is put from flexible connection, spring is little to the active force of throttle flap, the fluid flow that namely passes through is big, in the time of away from spring top is put from flexible connection, its active force is big, and the fluid flow that passes through is little.
The 4th embodiment of this utility model:
The end of spring can be positioned at the optional position on the tube wall of hollow pipe, and spring has occupied space in the hollow pipe, when blood refluxes, has reduced the blood space like this, and then the probability of minimizing generation blood clotting.
Those skilled in the art can carry out various remodeling and change to this utility model.Therefore, this utility model has covered various remodeling and the change in the scope that falls into appending claims and equivalent thereof.
Claims (9)
1. one kind prevents that blood from refluxing and prevent the garter needle point of medicinal liquid emptying; mainly formed by injection tip, hollow pipe, spring, throttle flap and protective sleeve; it is characterized in that: throttle flap is positioned at hollow pipe; there is the tube wall of a place and hollow pipe to flexibly connect on its outer; spring is positioned at hollow pipe; fixedly connected with throttle flap in its top, its end is fixedlyed connected with the tube wall of hollow pipe.
2. garter needle point according to claim 1 is characterized in that: described spring near the most advanced and sophisticated the same side of injection or with the most advanced and sophisticated opposite side of injection.
3. garter needle point according to claim 1 is characterized in that: described spring can replace with the elasticity tie rod.
4. garter needle point according to claim 3, it is characterized in that: described elasticity tie rod is rubber band.
5. garter needle point according to claim 1, it is characterized in that: there is a ring protection cover outer of described throttle flap.
6. garter needle point according to claim 1, it is characterized in that: described protective sleeve is positioned on the inwall of hollow pipe.
7. according to claim 5 or 6 described garter needle points, it is characterized in that: described protective sleeve is rubber material or plastic material.
8. garter needle point according to claim 1 is characterized in that: the diameter of described spring is less than the diameter of hollow pipe, but greater than 1/4th of hollow pipe diameter.
9. garter needle point according to claim 1, it is characterized in that: the top of described spring is positioned at the center of throttle flap, and the top of described spring also can be positioned at the optional position on the throttle flap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069289 CN203060463U (en) | 2013-02-06 | 2013-02-06 | Transfusion needle point preventing blood backflow and liquid medicine emptying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069289 CN203060463U (en) | 2013-02-06 | 2013-02-06 | Transfusion needle point preventing blood backflow and liquid medicine emptying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203060463U true CN203060463U (en) | 2013-07-17 |
Family
ID=48759294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320069289 Expired - Fee Related CN203060463U (en) | 2013-02-06 | 2013-02-06 | Transfusion needle point preventing blood backflow and liquid medicine emptying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203060463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630047A (en) * | 2019-10-11 | 2019-12-31 | 浙江波皇装饰材料有限公司 | Leisure sentry box with rainwater collection function |
-
2013
- 2013-02-06 CN CN 201320069289 patent/CN203060463U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630047A (en) * | 2019-10-11 | 2019-12-31 | 浙江波皇装饰材料有限公司 | Leisure sentry box with rainwater collection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20150206 |
|
| EXPY | Termination of patent right or utility model |