CN214232320U - Disposable prefilling type intravascular indwelling catheter flusher - Google Patents
Disposable prefilling type intravascular indwelling catheter flusher Download PDFInfo
- Publication number
- CN214232320U CN214232320U CN202022860525.6U CN202022860525U CN214232320U CN 214232320 U CN214232320 U CN 214232320U CN 202022860525 U CN202022860525 U CN 202022860525U CN 214232320 U CN214232320 U CN 214232320U
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- China
- Prior art keywords
- push rod
- piston
- indwelling catheter
- disposable
- handle
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- Expired - Fee Related
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- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000011010 flushing procedure Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000001802 infusion Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The disposable prefilled intravascular indwelling catheter flusher comprises a syringe, a closing part and a push rod assembly; the needle cylinder comprises a liquid outlet end and a piston pushing end; the sealing piece is arranged at the end port of the pushing-in end of the piston, a through hole is arranged in the center of the sealing piece, the through hole extends towards the liquid outlet end to form a through pipe, and the through pipe and the liquid outlet end form a sealing stroke section of the push rod assembly; the push rod assembly comprises a push rod and a piston, the piston is arranged in the closed stroke section, and the push rod penetrates through the through pipe to be connected with the piston. The closing piece with the through pipe and movably arranged at the pushing end of the syringe piston can form a changeable closing stroke section, so that the piston withdrawing stroke of the pre-flushing type catheter cleaner can be changed, enough negative pressure is generated, air in the catheter can be pumped into the disposable pre-filling type catheter cleaner, and the situation that the piston is pulled out of the syringe due to overlarge force during extraction can be avoided.
Description
Technical Field
The utility model relates to the field of medical equipment, concretely relates to disposable preliminary filling formula is stay a tub flusher in blood vessel.
Background
The disposable pre-filled catheter flusher is widely used for cleaning various types of indwelling needle infusion catheters in clinic, is convenient and safe to operate, and obviously improves the working efficiency. In the actual operation process, when the disposable prefilled catheter flusher is connected to the indwelling needle infusion catheter, a certain amount of air can be blocked in the indwelling needle infusion catheter, and if the air in the indwelling needle infusion catheter is not emptied, the air can enter a blood vessel along with the cleaning liquid. In order to solve the problems, the general solution adopted by medical staff is to suck the air in the catheter into the prefilled catheter flusher, and then push the push rod of the flusher in a pulse mode to flush the catheter. However, the volume of the disposable prefilled catheter is small, the retraction stroke is short, and in addition, the indwelling needle infusion catheter generates larger negative pressure due to external air, so that the medical care personnel can not achieve the emptying effect with small force, and can easily pull the piston of the flusher out of the syringe with large force, thereby leading the pre-flushing liquid in the syringe to flow out, causing pollution, and also leading the disposable prefilled catheter flusher to fail, thereby leading to the waste of cost due to replacement.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a disposable prefilled intravascular indwelling catheter flusher, which can change the piston retraction stroke of the prefilled catheter flusher, generate enough negative pressure to draw air in the catheter into the disposable prefilled catheter flusher, and avoid the piston being pulled out of the syringe due to too much force during the drawing process by designing a movable closing member at the end of the disposable prefilled catheter flusher.
The utility model discloses a following technical scheme realizes:
the disposable prefilled intravascular indwelling catheter flusher comprises a needle cylinder, a sealing part and a push rod assembly, wherein the needle cylinder comprises a liquid outlet end and a piston push-in end; the sealing piece is arranged at the end port of the pushing end of the piston, a through hole is formed in the center of the sealing piece, the through hole extends towards the liquid outlet end to form a through pipe, and the through pipe and the liquid outlet end form a sealing stroke section of the push rod assembly; the push rod assembly comprises a push rod and a piston, the piston is arranged in the closed stroke section, and the push rod penetrates through the through pipe to be connected with the piston.
Furthermore, the closing piece is in threaded connection with the outer wall of the port of the pushing end of the piston, and the length of the closing stroke section is changed according to the screwing-in and screwing-out of the closing piece.
Further, set up the stopper in the siphunculus, the stopper is the ring that has the breach, set up the location tooth on the push rod, the push rod is taken back to the pump, the location tooth gets into the siphunculus through the ring breach, twists reverse the certain angle of push rod, and the location tooth blocks on the stopper under the effect of needle tubing internal negative pressure, and the push rod can not remove to going out the liquid end, twists reverse the certain angle of push rod again, and push rod location tooth falls into the breach of ring, and the push rod can continue to remove to going out the liquid end.
Furthermore, the positioning teeth are cylinders, and the cylinders are fixedly connected with the push rod.
Furthermore, the number and the positions of the positioning teeth correspond to those of the notches on the single limiting block.
Furthermore, the two sides of the annular U-shaped groove are provided with hand-clamping handles, and the tail end of the push rod is provided with a hand-pushing handle.
Furthermore, the positions of the hand clamp handle, the hand push handle and the circular ring notch are relatively fixed.
Further, the gripper handle has two pointing ends.
The beneficial effects of the utility model reside in that:
the utility model discloses the advantage lies in setting up the closed piece that has the siphunculus at cylinder piston push-in end through the activity, can form a variable closed stroke section to both can change the stroke of drawing back of preshooting formula pipe purger piston, produce enough negative pressure can with the disposable pre-filling formula pipe flusher of air suction in the pipe, can also avoid causing the piston to be pulled out the cylinder because the power is too big when extracting. The locating teeth and the limiting blocks can continuously generate negative pressure to absorb air mixed in the catheter until the air mixed in the catheter is emptied, so that labor can be saved, and the movable mounting of the closing piece and the limiting blocks with notches are convenient to produce and mount.
Drawings
Fig. 1 is a front view of the present invention;
FIG. 2 is a sectional view taken along the line L-L of the present invention;
FIG. 3 is a right side view of the present invention;
FIG. 4 is a front view of the syringe of the present invention;
fig. 5 is a front view of the push rod assembly of the present invention;
FIG. 6 is a front view of the annular "U" -shaped groove of the present invention;
FIG. 7 is a left side view of the annular U-shaped groove of the present invention;
FIG. 8 is a right side view of the annular "U" -shaped groove of the present invention;
in the figure: 1. a closure; 2. a needle cylinder; 3. a push rod assembly; 101. pipe passing; 102. a limiting block; 103. a hand grip handle; 201. a liquid outlet end; 202. a piston push-in end; 301. a push rod; 302. positioning teeth; 303. a piston; 304. a hand push handle; 305. pointing to the end.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the above description of the present invention, it should be noted that the terms "one side" and "the other side" are used for indicating the position or the positional relationship based on the position or the positional relationship shown in the drawings, or the position or the positional relationship which is usually placed when the product of the present invention is used, only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Further, the term "identical" and the like do not mean that the components are absolutely required to be identical, but may have slight differences. The term "perpendicular" merely means that the positional relationship between the components is more perpendicular than "parallel", and does not mean that the structure must be perfectly perpendicular, but may be slightly inclined.
Example (b):
as shown in fig. 1 to 8, the present embodiment is a disposable prefilled intravascular indwelling catheter flusher, which comprises a syringe 2, a closing part 1 and a push rod assembly 3;
the cylinder 2 includes a discharge end 201 and a piston push end 202.
The sealing element 1 is arranged at the port of the piston push-in end 202, a through hole is arranged in the center of the sealing element 1, the through hole extends towards the liquid outlet end to form a through pipe 101, and the through pipe 101 and the liquid outlet end 201 form a closed stroke section of the push rod assembly.
Push rod assembly 3 includes a push rod 301 and a piston 303. The piston 303 is disposed within the closed stroke segment. The diameter of the through hole is larger than that of the push rod 301 and smaller than that of the piston 303, and the push rod 301 can penetrate through the through pipe 101 to be connected with the piston 303, so that the piston is prevented from being pulled out of the syringe due to overlarge back suction force.
In this embodiment, the sealing member 1 is an annular groove having a U-shaped cross-section.
In this embodiment the closure 1 is threaded onto the outer wall of the port at the piston push-in 202. In this embodiment, the outer wall of the port of the piston push-in end 202 of the syringe is provided with an external thread, the contact surface between the sealing element 1 and the outer wall of the port of the piston push-in end is provided with an internal thread, the sealing element 1 can be screwed in and screwed out along the outer wall of the port of the piston push-in end, the length of the sealing stroke section is changed according to the screwing-in and screwing-out of the sealing element, the sealing element is screwed in, the sealing stroke section is shortened.
When the disposable prefilled intravascular indwelling catheter flusher is connected to the infusion catheter, medical staff can properly adjust the position of the sealing part 1 according to the amount of air visible in the pre-flushing catheter, and can unscrew the sealing part 1 to increase the push rod drawing stroke when the amount of air is more, so that the negative pressure strength is increased, and the emptying time is shortened.
When the air inlet amount is large and the stroke length is not enough to generate enough negative pressure, the air time in the extraction catheter is long, and the medical personnel can keep a long-time back-pumping state for solving the problem, the utility model discloses do further improvement.
Set up stopper 102 in the siphunculus in this embodiment, stopper 102 is the ring that has the breach in this embodiment, sets up location tooth 302 on the push rod, withdraws push rod 301, and location tooth 102 gets into the siphunculus through the ring breach, twists reverse the certain angle of push rod 301, and location tooth 302 blocks on stopper 102 under the effect of needle tubing internal negative pressure, and the push rod can not remove to play liquid end 201, twists reverse the certain angle of push rod 301 again, and location tooth 302 falls into the breach of ring, and the push rod can continue to remove to play liquid end.
This embodiment of stopper quantity sets up to 4, is interval distribution in the siphunculus, can adjust the negative pressure size according to different situation, can set up certain negative pressure according to the stopper position before leaving the pipe flusher to dispatch from the factory in disposable pre-filled formula blood vessel, guarantees that the phenomenon of leaking can not appear because of the extrusion push rod in transit or the storage, also can use the initial stage to examine whether the push rod moves towards the liquid end automatically and judge whether there is the gas leakage phenomenon through rotatory push rod.
In this embodiment, the positioning teeth 302 are cylinders, and the cylinders are fixedly connected to the push rod 301.
The number and the positions of the positioning teeth 302 correspond to the number and the positions of the notches on the single limiting block 102
In this embodiment, the number of the notches on the single limiting block 102 is two, the notches are symmetrically distributed on two sides of the circular ring, the number of the positioning teeth 302 is also 2, and the diameter of the positioning teeth is smaller than that of the circular ring notches.
In this embodiment, the two sides of the closing member 1 are provided with the hand clamping handles 103, and the tail end of the push rod 301 is provided with the hand pushing handle 304, so that the operation of medical staff is facilitated.
In order to accurately grasp the rotation angle of the push rod, the position of the gap of the limiting block 102 is fixed relative to the positions of the hand clamp handle 103 and the hand push handle 304.
In this embodiment, the pointing ends 305 are disposed at two sides of the handle 304, the extending direction of the pointing ends 305 to two ends is the same as the extending direction of the gap of the limiting circle 102, the symmetry plane P "-P" of the pointing ends 305 of the handle coincides with the symmetry plane P-P of the limiting block 102, the symmetry plane P '-P' of the handle 103 is perpendicular to the symmetry plane P "-P" of the pointing ends 305 or the symmetry plane P-P of the limiting block 102, and medical personnel can determine the twisting angle according to the position of the pointing ends of the handle.
In order to reduce the process cost, the material of the stopper 102 in this embodiment is the same as that of the closure 1, and the material of the positioning teeth 302 is the same as that of the push rod 301.
The above description is only one specific example of the present invention and does not constitute any limitation to the patent of the present invention. It will be apparent to persons skilled in the relevant art that various modifications and changes in form and detail can be made therein without departing from the principles and arrangements of the invention, but these modifications and changes are still within the scope of the invention as defined in the appended claims.
Claims (9)
1. The disposable prefilled intravascular indwelling catheter flusher is characterized by comprising a needle cylinder, a closing piece and a push rod assembly, wherein the needle cylinder comprises a liquid outlet end and a piston push-in end; the sealing piece is arranged at the end port of the pushing end of the piston, a through hole is formed in the center of the sealing piece, the through hole extends towards the liquid outlet end to form a through pipe, and the through pipe and the liquid outlet end form a sealing stroke section of the push rod assembly; the push rod assembly comprises a push rod and a piston, the piston is arranged in the closed stroke section, and the push rod penetrates through the through pipe to be connected with the piston.
2. The disposable prefilled intravascular indwelling catheter flusher of claim 1, wherein the closure member is threadably engaged to the outer wall of the port of the push end of the piston, and wherein the length of the segment of the closure stroke varies depending on the rotation of the closure member.
3. The disposable prefilled intravascular indwelling catheter flusher according to claim 1, wherein a stopper is disposed in the through tube, the stopper is a ring having a notch, a positioning tooth is disposed on the push rod, the push rod is pulled back, the positioning tooth enters the through tube through the notch of the ring, the push rod is twisted by a certain angle, the positioning tooth is clamped on the stopper under the action of negative pressure in the needle tube, the push rod cannot move to the liquid outlet end, the push rod is twisted by a certain angle, the positioning tooth of the push rod falls into the notch of the ring, and the push rod can continue to move to the liquid outlet end.
4. The disposable prefilled intravascular indwelling catheter flusher of claim 3, wherein the positioning teeth are cylinders, and wherein the cylinders are fixedly connected to the push rod.
5. The disposable prefilled intravascular indwelling catheter flusher of claim 3, wherein the number and location of the positioning teeth correspond to the number and location of the notches on the single stop block.
6. The disposable prefilled intravascular indwelling catheter flusher of any one of claims 1 to 5, wherein a handle grip is provided on either side of the closure member and a push handle is provided at the end of the push rod.
7. The disposable prefilled intravascular indwelling catheter flusher of claim 6, wherein the handle clamp handle is fixed relative to the push handle and the annular notch.
8. The disposable prefilled intravascular indwelling catheter flusher of claim 7, wherein said handle grip has two pointed ends.
9. A disposable pre-filled intravascular indwelling catheter according to claim 8, wherein the handle-pointing symmetry plane P "-P" coincides with the stopper symmetry plane P-P, and the handle symmetry plane P '-P' is perpendicular to the handle-pointing symmetry plane P "-P".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022860525.6U CN214232320U (en) | 2020-12-02 | 2020-12-02 | Disposable prefilling type intravascular indwelling catheter flusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022860525.6U CN214232320U (en) | 2020-12-02 | 2020-12-02 | Disposable prefilling type intravascular indwelling catheter flusher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214232320U true CN214232320U (en) | 2021-09-21 |
Family
ID=77735846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022860525.6U Expired - Fee Related CN214232320U (en) | 2020-12-02 | 2020-12-02 | Disposable prefilling type intravascular indwelling catheter flusher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214232320U (en) |
-
2020
- 2020-12-02 CN CN202022860525.6U patent/CN214232320U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |