CN211188562U

CN211188562U - Venous indwelling needle capable of preventing blood return

Info

Publication number: CN211188562U
Application number: CN201921641866.5U
Authority: CN
Inventors: 陈维国
Original assignee: Jiangxi Huali Medical Instrument Co ltd
Current assignee: Jiangxi Huali Medical Instrument Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-08-07
Anticipated expiration: 2029-09-29

Abstract

The utility model relates to the technical field of venous indwelling needle, in particular to a venous indwelling needle capable of preventing blood return, which comprises a blood return pipe and a transfusion pipe, wherein the top inner side of the blood return pipe is communicated with a sleeve pipe, the left and right ends of the blood return pipe are both communicated with a liquid inlet pipe, the inner side of the blood return pipe is fixedly connected with a separation plug, the right end of the liquid inlet pipe on the right side is communicated with a weeping pipe, the right end of the weeping pipe is communicated with a connecting pipe, the top end of the connecting pipe is communicated with a shell, and the right end of the shell is communicated with a liquid feeding pipe. Lightens the nursing work, improves the medical quality, has good practicability and is worth popularizing.

Description

Venous indwelling needle capable of preventing blood return

Technical Field

The utility model relates to a vein indwelling needle technical field specifically is a vein indwelling needle that can prevent blood return.

Background

Along with the development of society, the application of the vein indwelling needle is increasingly wide, along with the continuous improvement of nursing technology, medical supplies are continuously updated, the indwelling needle is recommended as the safest puncture tool by the world health organization, the operation is simple and convenient, repeated puncture, blood vessel protection and pain relief of patients are reduced, clinical medication and emergency rescue are facilitated, and the workload of nurses is reduced. The venous indwelling needle can be used continuously or repeatedly at intervals for multiple days by one puncture, the pain of repeated puncture of a patient is relieved, the workload of nursing staff is relieved, the venous indwelling needle is deeply welcomed by patients in clinic, a large amount of medical nursing manpower and material resources are saved, and the venous indwelling needle has great medical economic significance, so that the requirement on the venous indwelling needle capable of preventing blood return is increased day by day.

The hidden trouble of the vein indwelling needle in the practical use lies in the thrombus blockage phenomenon that the blood flows back to the catheter cavity, after one-time transfusion is finished, medical personnel close the transfusion channel through hand pressing or a flow stopping clamp, the blood is easily sucked into the cannula in the operation process, when the next transfusion is carried out, the thrombus is formed in the cannula, if the thrombus is re-input into the vein in the transfusion process again, serious medical accidents can be caused, therefore, in order to keep the safety of the vein indwelling needle, the cannula is frequently flushed every several hours in the prior art, even the indwelling needle needs to be replaced to carry out the next transfusion, the nursing working strength of the medical personnel is greatly increased, and therefore, the vein indwelling needle capable of preventing blood return is provided aiming at the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can prevent vein of blood return and keep somewhere needle to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a venous indwelling needle capable of preventing blood return comprises a blood return tube and a liquid conveying tube, wherein the top end of the blood return tube is communicated with a sleeve, the left end and the right end of the blood return tube are communicated with a liquid inlet tube, the inner side of the blood return tube is fixedly connected with a partition plug, the right end of the liquid inlet tube on the right side is communicated with a liquid seepage tube, the right end of the liquid seepage tube is communicated with a connecting tube, the top end of the connecting tube is communicated with a shell, the right end of the shell is communicated with a liquid adding tube, the top end of the liquid adding tube is communicated with a liquid adding head, the inner side of the top end of the liquid adding head is slidably connected with a syringe, the inner side of the shell is slidably connected with a piston, the bottom end of the piston is provided with a liquid chamber, the inner side of the shell is fixedly connected with a valve body, the bottom end of the valve body is provided with an air cavity, and the bottom and the pneumatic tube fixed connection of air pressure induction controller, the inboard intercommunication of the right-hand member of air cavity has the blast pipe, the left end spiro union of blast pipe has the nut, the inboard fixedly connected with dead lever in top of valve body, the bottom fixedly connected with spring of dead lever, the other end fixedly connected with ball of spring, and the ball is located the bottom side central point department of putting of valve body, the top right side fixedly connected with button cell of casing, the top left side fixedly connected with alarm of casing, the inboard sliding connection in top of casing has the leather cup, the top fixedly connected with push-and-pull rod of leather cup, equal sliding connection in connecting pipe and transfer line and liquid feeding pipe outside has the stagnant flow clamp.

Preferably, the housing is made of glass made of ink resin, and the housing is disposed in a cylindrical shape.

Preferably, the infusion tube, the connecting tube and the liquid feeding tube are all made of PVC pipes.

Preferably, the left end of the liquid inlet pipe positioned on the left side is communicated with a transfusion pipe.

Preferably, the valve body is arranged in a cylinder shape, and the interior of the valve body is of a hollow structure.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, through push-and-pull rod, air cavity, liquid chamber and the valve body that sets up, can remain the vein throughout and keep staying the needle and be in the state of a malleation, when having prevented the blood reflux, also prevented the formation of intraductal thrombus of cover, reduced the vein and stayed the use risk of needle, patient oneself just can pressurize through the push-and-pull rod, has alleviateed nursing work, has improved medical quality, has fine practicality, is worth promoting.

2. The utility model discloses in, through pneumatic tube, atmospheric pressure induction controller, casing and the alarm that sets up, can send the alarm sound when the pressure in the air cavity is low excessively to the suggestion user need pressurize, has played better additional action to preventing blood return, because the casing is transparent material, so can be very audio-visual the liquid surplus of liquid chamber of seeing, the liquid feeding of being convenient for.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure at A of FIG. 1 according to the present invention;

fig. 3 is a schematic structural diagram of the point B in fig. 1 according to the present invention.

In the figure: 1-separating plug, 2-flow stopping clip, 3-connecting pipe, 4-liquid chamber, 5-liquid adding pipe, 6-liquid adding head, 7-injector, 8-piston, 9-sleeve, 10-blood returning pipe, 11-liquid inlet pipe, 12-liquid conveying pipe, 13-liquid permeating pipe, 14-ball, 15-air chamber, 16-air pressure pipe, 17-air pressure induction controller, 18-alarm, 19-shell, 20-push-pull rod, 21-button cell, 22-fixing rod, 23-spring, 24-leather cup, 25-valve body, 26-exhaust pipe and 27-nut.

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.

Referring to fig. 1-3, the present invention provides a technical solution:

the utility model provides a can prevent vein retention needle of blood return, includes blood return 10 and transfer line 12, the inboard intercommunication in top of blood return 10 has sleeve pipe 9, and sleeve pipe 9 can reduce the damage to the blood vessel greatly, both ends all communicate with feed liquor pipe 11 about blood return 10, the inboard fixedly connected with of blood return 10 separates stopper 1, and this kind of setting can play sealed vein retention needle's effect after breaking away from the pjncture needle, is located the right side the right-hand member intercommunication of feed liquor pipe 11 has weeping pipe 13, and this kind of setting can make the saline in the liquid chamber 4 slowly release, makes the needle of remaining keep the malleation all the time, the right-hand member intercommunication of weeping pipe 13 has connecting pipe 3, the top of connecting pipe 3 communicates there is casing 19, the right-hand member intercommunication of casing 19 has liquid feeding pipe 5, the top intercommunication of liquid feeding pipe 5 has liquid feeding head 6, the inboard sliding connection in top of liquid feeding head 6 has syringe 7, a piston 8 is slidably connected to the inner side of the housing 19, a liquid chamber 4 is arranged at the bottom end of the piston 8, a valve body 25 is fixedly connected to the inner side of the housing 19, the valve body 25 is positioned on the upper side of the piston 8, an air cavity 15 is arranged at the bottom end of the valve body 25, an air pressure pipe 16 is communicated with the inner side of the left end of the air cavity 15, an air pressure sensing controller 17 is fixedly connected to the right end of the housing 19, the bottom end of the air pressure sensing controller 17 is fixedly connected with the air pressure pipe 16, an exhaust pipe 26 is communicated with the inner side of the right end of the air cavity 15, a nut 27 is screwed to the left end of the exhaust pipe 26, a fixed rod 22 is fixedly connected to the inner side of the top end of the valve body 25, a spring 23 is fixedly connected to the bottom end of the fixed rod 22, a ball 14 is fixedly connected to the other end of, the alarm 18 is fixedly connected to the left side of the top end of the shell 19, a leather cup 24 is slidably connected to the inner side of the top end of the shell 19, a push-pull rod 20 is fixedly connected to the top end of the leather cup 24, the connecting pipe 3, the infusion pipe 12 and the liquid adding pipe 5 are both slidably connected with the flow stopping clamp 2, and liquid in the pipeline can be prevented from flowing when needed due to the arrangement.

Casing 19 is made by the glass of printing ink resin material, and the glass of this kind of material has better hardness, and transparent, is convenient for audio-visually see the height of the interior liquid of liquid chamber, and casing 19 is cylindric setting, and cylindric setting makes inside liquid chamber 4 and air cavity 15 receive pressure evenly, transfer line 12, connecting pipe 3 and liquid feeding pipe 5 are all made by the tubular product of PVC material, and the tubular product pliability of this kind of material is better, can be used for medical, is located leftly 11 left ends intercommunication of liquid feeding pipe has transfer line 12, and this kind of setting makes vein detained needle can external transfusion system, valve body 25 is the cylinder setting, and valve body 25 is inside to be hollow structure, and this kind of setting can get into air cavity 15 with gas, makes the inside pressurization of air cavity 15.

The model of the air pressure induction controller 17 is MS4426, the model of the button cell 21 is 6-QW-70, and the model of the alarm 18 is KS-808.

The working process is as follows: the utility model supplies power through the button cell 21 before using, after inserting the sleeve pipe 9 into the vein, the liquid medicine enters the blood from the infusion tube 12 and the liquid inlet tube 11 through the sleeve pipe 9, after the infusion is finished, the stop-flow clamp 2 on the infusion tube 12 is closed, the liquid inlet tube 11 on the left is in the closed state, in order to prevent the formation of blood return and thrombus, the screw cap 27 is unscrewed to ventilate the air cavity 15, the injector 7 is inserted into the liquid adding head 6 to inject the physiological saline into the liquid chamber 4 through the liquid adding tube 5, the piston 8 moves upwards under the pressure of the injector 7, when the piston 8 moves to the two thirds of the whole shell 19, the injection is stopped, the screw cap 27 is screwed up to make the air cavity 15 in the closed state, the injector 7 is pulled out, the stop-flow clamp 2 outside the liquid adding tube 5 is closed, the stop-flow clamp 2 on the connecting tube 3 is in the open state, the, the cup 24 expands to divide the upper end of the shell 19 into two closed parts, the air pressure at the lower end of the cup 24 is increasingly higher, when the thrust generated by the air pressure on the ball 14 is greater than the pulling force of the spring 23, the ball 14 moves downwards, the air enters the air cavity 15 through the inner side of the valve body 25, the pressure of the air cavity 15 is increased, when the push-pull rod 20 drives the cup 24 to move upwards, the cup 24 contracts under the action of the pulling force, the air flows in from the gap between the inner side of the top end of the shell 19 and the cup 24, the air pressure at the lower side of the cup 24 is low, the ball 14 moves upwards under the pulling force of the spring 23, the inner side channel of the valve body 25 is blocked, the air in the air cavity 15 is prevented from leaking upwards, the push-pull rod 20 reciprocates, the air in the air cavity 15 is continuously increased, the pressure in the air cavity 15 pushes the piston 8 to move downwards, the physiological saline enters the seepage tube 13 through the connecting tube 3, finally through slow entering into venous blood vessel of sleeve pipe 9, keep the pressure in the sleeve pipe 9 to be higher than blood pressure, thereby play the effect of preventing blood return, along with the continuous reduction of normal saline, the pressure of air cavity 15 also constantly reduces, atmospheric pressure induction controller 17 passes through the atmospheric pressure in the atmospheric pressure pipe 16 real-time detection air cavity 15, when atmospheric pressure is low excessively, atmospheric pressure induction controller 17 control alarm 18 reminds near people, including oneself, need pressurize, because casing 19 is transparent material, see the liquid height in the liquid chamber 4 through casing 19, thereby judge whether need the liquid feeding.

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

1. A venous indwelling needle capable of preventing blood return comprises a blood return pipe (10) and an infusion tube (12), and is characterized in that: the inner side of the top end of the blood return pipe (10) is communicated with a sleeve (9), the left end and the right end of the blood return pipe (10) are communicated with a liquid inlet pipe (11), the inner side of the blood return pipe (10) is fixedly connected with a separation plug (1), the right end of the liquid inlet pipe (11) positioned on the right side is communicated with a liquid seepage pipe (13), the right end of the liquid seepage pipe (13) is communicated with a connecting pipe (3), the top end of the connecting pipe (3) is communicated with a shell (19), the right end of the shell (19) is communicated with a liquid adding pipe (5), the top end of the liquid adding pipe (5) is communicated with a liquid adding head (6), the inner side of the top end of the liquid adding head (6) is slidably connected with an injector (7), the inner side of the shell (19) is slidably connected with a piston (8), the bottom end of the piston (8) is provided, the valve body (25) is positioned on the upper side of the piston (8), an air cavity (15) is arranged at the bottom end of the valve body (25), an air pressure pipe (16) is communicated with the inner side of the left end of the air cavity (15), an air pressure sensing controller (17) is fixedly connected with the right end of the shell (19), the bottom end of the air pressure sensing controller (17) is fixedly connected with the air pressure pipe (16), an exhaust pipe (26) is communicated with the inner side of the right end of the air cavity (15), a nut (27) is spirally connected with the left end of the exhaust pipe (26), a fixed rod (22) is fixedly connected with the inner side of the top end of the valve body (25), a spring (23) is fixedly connected with the bottom end of the fixed rod (22), a ball (14) is fixedly connected with the other end of the spring (23), the ball (14) is positioned at the central position of the bottom side of the valve body (25, the top left side fixedly connected with alarm (18) of casing (19), the inboard sliding connection in top of casing (19) has leather cup (24), the top fixedly connected with push-and-pull rod (20) of leather cup (24), equal sliding connection in connecting pipe (3) and transfer line (12) and liquid feeding pipe (5) outside has the stagnant flow to press from both sides (2).

2. The venous indwelling needle capable of preventing blood return according to claim 1, wherein: the housing (19) is made of glass made of ink resin, and the housing (19) is arranged in a cylindrical shape.

3. The venous indwelling needle capable of preventing blood return according to claim 1, wherein: the infusion tube (12), the connecting tube (3) and the liquid feeding tube (5) are all made of PVC pipes.

4. The venous indwelling needle capable of preventing blood return according to claim 1, wherein: the left end of the liquid inlet pipe (11) positioned on the left side is communicated with a transfusion pipe (12).

5. The venous indwelling needle capable of preventing blood return according to claim 1, wherein: the valve body (25) is arranged in a cylindrical manner, and the interior of the valve body (25) is of a hollow structure.