CN213759956U - Self-sealing type venous indwelling needle with liquid bag in needle base - Google Patents
Self-sealing type venous indwelling needle with liquid bag in needle base Download PDFInfo
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- CN213759956U CN213759956U CN202022479338.3U CN202022479338U CN213759956U CN 213759956 U CN213759956 U CN 213759956U CN 202022479338 U CN202022479338 U CN 202022479338U CN 213759956 U CN213759956 U CN 213759956U
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Abstract
The utility model discloses a liquid bag self-sealing type vein indwelling needle in a needle seat, which comprises a needle seat, wherein one end of the needle seat is communicated with an indwelling catheter, a steel core isolating plug is arranged in the needle seat, one end of the needle seat, which is far away from the indwelling catheter, is detachably connected with a needle rod seat, the needle rod seat is connected with a steel needle core which passes through the steel core isolating plug and is inserted into the indwelling catheter, a transfusion channel communicated with the indwelling catheter is formed in the needle seat, and the outer side of the needle seat is connected with a liquid inlet pipe communicated with the transfusion channel; the outer side of the needle base is connected with a liquid filling hose, the side wall of the infusion channel is connected with a working medium liquid bag communicated with the liquid filling hose, the free end of the liquid filling hose is communicated with a liquid filling injection tube, one end of the liquid filling injection tube, which is far away from the liquid filling hose, is provided with a threaded hole, a piston is connected in the liquid filling injection tube in a sliding manner, and the piston is connected with a threaded push rod in threaded connection with the threaded hole. The utility model discloses a working medium liquid bag is full of the inflation of working medium liquid and seals infusion passageway when the tube sealing, circulated use, easy operation alleviates nurse's work load.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a self-sealing venous indwelling needle of a liquid bag in a needle stand.
Background
In 2013, the dosage of large venous transfusion in China is 104 hundred million bottles, the dosage of a venous transfusion device is 30 hundred million sets, and the dosage of a venous indwelling needle is more than 3 hundred million. They are mainly products produced by joint venture corporation, beram corporation, BD corporation, berland corporation, and the like, eastern wegian corporation, suzhou linhua corporation, and the like.
The venous indwelling needle is also called as venous trocar and consists of a stainless steel needle core, an outer sleeve and a plastic needle seat. When in puncture, the stainless steel needle core and the outer sleeve are punctured into the blood vessel together, and the stainless steel needle core is drawn out after entering the blood vessel, so that the soft indwelling catheter is left in the blood vessel for transfusion. The flexible tube is retained in the vein, so that the injury of the steel needle to the blood vessel is avoided, and the patient can do slight movement with the needle. The venous indwelling needle is suitable for puncture at any position, one puncture can be used for multiple times and multiple days continuously or at intervals, 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 nursing patients clinically, meanwhile, a large amount of medical nursing manpower and material resources are saved, and the venous indwelling needle has health and economic significance, so that the Chinese nursing society advocates the use of indwelling needle infusion, currently, a demonstration hospital advocates 'zero tolerance on a steel needle', and advices more than 2 times of infusion treatment and all uses of indwelling needles.
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. A series of appliances, medicines and operation techniques are developed for the purpose of sealing the tube, and a series of specifications and standards are established. The American venous transfusion society updates INS venous transfusion practice standard every 4 years, is the 2011 edition of venous transfusion practice standard, and the national health and family planning committee publishes intravenous therapy nursing technical operation specification 14 11 months in 2013 in China, wherein indwelling needle sealing tubes are defined and the standards are stipulated.
The tube sealing method in the standard method at present is to inject physiological saline or heparin tube sealing liquid into a catheter to seal the tube, and the principle of the tube sealing method is that the physiological saline or other tube sealing liquid is used as working liquid to occupy the space in a catheter cavity, so that blood and blood coagulation components of the blood cannot enter the catheter; secondly, the physiological saline in the catheter can dilute the entered blood coagulation substance, thereby delaying blood coagulation and thrombosis.
The tube sealing nursing project needs to use equipment such as a positive pressure joint, tube sealing liquid, a flushing tube sealing injector and the like, and is completed through fine technical operations such as three-time pulse type injection, positive pressure tube sealing of liquid pushing and needle withdrawing simultaneously and the like. The method increases the workload of nurses; the disposable tube sealing flushing injector causes resource waste, increases medical waste and treatment cost, and is not beneficial to environmental protection.
The effective time of physiological saline tube sealing is about 4 hours, the tube sealing can only be used for tube sealing of intermittent infusion, and heparin tube sealing liquid is required to be used for more than 4 hours. Heparin is an anticoagulant prescription drug that nurses cannot decide to use, thus increasing the workload of physicians; in addition, a part of patients can not use heparin liquid medicine to seal the tube due to physique and illness state, and the tube is sealed once every 4 hours for the patients, so that the nursing workload is increased, the sleeping and the resting are influenced, and the comfort level of the patients is influenced.
At present, an indwelling needle for closing or opening a catheter at a needle seat by using a mechanical piston is used for sealing the catheter, the piston is required to be operated on the needle seat, and the external force is transmitted to the indwelling catheter in a vein, so that the catheter is displaced, falls off and scratches an intima of the vein, and infusion leakage, infusion failure, phlebitis, venous thrombosis and the like are caused. In addition, the operation needs to be performed by two hands, the indwelling needle application needs to be opened, the pollution chance is increased, and the workload of nurses is large.
The other self-sealing remaining needle is characterized in that the inner cavity of the needle seat is partitioned into a positive pressure chamber and a transfusion chamber, and liquid in the positive pressure chamber can automatically and slowly flow into the transfusion chamber to achieve tube sealing when transfusion is stopped. The method can cause the liquid flowing into the transfusion channel from the positive pressure chamber to run off into the vein, the liquid with limited capacity in the positive pressure chamber can quickly flow out, no positive pressure exists after the liquid flows out, and the tube sealing effect is gradually reduced along with time.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a needle is kept somewhere to liquid bag self-sealing formula vein in needle file is full of the inflation of working medium liquid and seals infusion passageway when the tube is sealed through the working medium liquid bag to the working liquid matter does not get into blood circulation in the liquid bag, circulated use, easy operation alleviates nurse's work load.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a liquid bag self-sealing type vein indwelling needle in a needle seat comprises a needle seat, wherein one end of the needle seat is communicated with an indwelling catheter, a steel core isolating plug is arranged in the needle seat, one end of the needle seat, which is far away from the indwelling catheter, is detachably connected with a needle rod seat, the needle rod seat is connected with a steel needle core which penetrates through the steel core isolating plug and is inserted into the indwelling catheter, an infusion channel communicated with the indwelling catheter is formed between the inside of the needle seat and the steel core isolating plug, the outer side of the needle seat is connected with a liquid inlet pipe communicated with the infusion channel, and the free end of the liquid inlet pipe is communicated with a positive pressure joint;
the needle base is characterized in that a liquid filling hose is connected to the outer side of the needle base, a working medium liquid bag which is communicated with the liquid filling hose and can be expanded is connected to the side wall of the infusion channel, a hollow liquid filling injection tube is communicated with the free end of the liquid filling hose, a threaded hole is formed in one end, far away from the liquid filling hose, of the liquid filling injection tube, a piston is connected in the liquid filling injection tube in a sliding mode, the piston is connected with a threaded push rod in threaded connection with the threaded hole, a knob is arranged at one end, far away from the piston, of the threaded push rod, and working medium liquid is contained in the injection tube.
By adopting the technical scheme, when in use, the indwelling catheter is guided into the venous vessel of a patient through the steel needle core, the steel needle core is withdrawn, and the positive pressure joint is connected with the infusion tube for infusion; when the tube needs to be sealed when the infusion is stopped, the knob is rotated, the threaded push rod drives the piston to push the working medium liquid into the working medium liquid bag, so that the working medium liquid bag is inflated and expanded to block the infusion channel, continuous positive pressure is provided for the indwelling catheter, and the blood is prevented from flowing back into the indwelling catheter; when transfusion is needed again, the knob is rotated reversely, the threaded push rod drives the piston to suck the working medium liquid back into the liquid filling injection tube, the working medium liquid bag is contracted to open the transfusion channel, and then transfusion can be started.
The utility model discloses a further set up to: the needle bar seat is connected with an operation pinching piece arranged along the needle seat direction.
The utility model discloses a further set up to: the working medium liquid is normal saline.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model achieves the purpose of tube sealing by filling the working medium liquid bag with the working medium liquid to expand and seal the transfusion channel, and the working medium does not enter blood circulation in the liquid bag, so that the device can be recycled, is simple to operate and reduces the workload of nurses;
secondly, the utility model discloses a mode that the liquid filling injection tube pours into or pumps work matter liquid into to work matter liquid bag makes work matter liquid bag expand or reduce, easy operation, and operating condition is stable to can effectively take out the work matter liquid in the work matter liquid bag completely, make its shrink to the minimum, do not hinder normal infusion.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a cross-sectional view of the present invention.
In the figure: 1. a needle seat; 11. a steel core isolation plug; 12. a fluid infusion channel; 2. an indwelling catheter; 3. a needle bar seat; 31. operating the pinching and holding piece; 32. a steel needle core; 4. a liquid inlet pipe; 41. a positive pressure joint; 5. a liquid-filled hose; 6. a working medium sac; 7. a liquid-filled injection tube; 71. a piston; 72. a threaded push rod; 73. a knob.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment provides a self-sealing type venous indwelling needle with a liquid bag in a needle seat, and with reference to fig. 1-2, the self-sealing type venous indwelling needle comprises a needle seat 1, one end of the needle seat 1 is communicated with an indwelling catheter 2, a steel core isolating plug 11 is arranged in the needle seat 1, one end of the needle seat 1, which is far away from the indwelling catheter 2, is detachably connected with a needle rod seat 3, the needle rod seat 3 is connected with an operation pinching piece 31 which is arranged along the direction of the needle seat 1, the needle rod seat 3 is connected with a steel needle core 32 which penetrates through the steel core isolating plug 11 and is inserted into the indwelling catheter 2, an infusion channel 12 which is communicated with the indwelling catheter 2 is formed between the needle seat 1 and the steel core isolating plug 11, the outer side of the needle seat 1 is connected with a liquid inlet pipe 4 which is communicated with the infusion channel 12, and the free end of the liquid inlet pipe 4 is communicated with a positive pressure joint 41.
The outer side of the needle base 1 is connected with a liquid filling hose 5, the side wall of the infusion channel 12 is connected with a working substance liquid bag 6 which is communicated with the liquid filling hose 5 and can be expanded, the free end of the liquid filling hose 5 is communicated with a hollow liquid filling injection tube 7, one end of the liquid filling injection tube 7, which is far away from the liquid filling hose 5, is provided with a threaded hole (not shown), the liquid filling injection tube 7 is connected with a piston 71 in a sliding manner, the piston 71 is connected with a threaded push rod 72 which is in threaded connection with the threaded hole, one end of the threaded push rod 72, which is far away from the piston 71, is provided with a knob 73, and the working substance liquid is contained in the liquid filling injection tube 7 and is physiological saline.
The use method comprises the following steps: when in use, the indwelling catheter 2 is guided into the venous vessel of a patient through the steel needle core 32, the steel needle core 32 is withdrawn, and the positive pressure joint 41 is connected with an infusion tube for infusion; when the tube sealing is needed when the transfusion is stopped, the knob 73 is rotated, the threaded push rod 72 drives the piston 71 to push the working medium liquid into the working medium liquid bag 6, so that the working medium liquid bag 6 is inflated and expanded to block the transfusion channel 12, continuous positive pressure is provided for the indwelling catheter 2, and the blood is prevented from flowing back into the indwelling catheter 2; when transfusion is needed again, the knob 73 is rotated reversely, the threaded push rod 72 drives the piston 71 to suck the working medium liquid back into the liquid filling injection tube 7, the working medium liquid bag 6 is contracted to open the transfusion channel 12, and then transfusion can be started.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (3)
1. The utility model provides a needle is kept somewhere to formula vein that liquid bag is proclaimed oneself in needle file, includes needle file (1), the one end intercommunication of needle file (1) has keeps somewhere pipe (2), be provided with steel core isolation plug (11) in needle file (1), keep away from needle file (1) the one end of keeping somewhere pipe (2) can be dismantled and is connected with needle bar seat (3), needle bar seat (3) are connected with and pass steel core isolation plug (11) insert keep somewhere steel nook closing member (32) in pipe (2), its characterized in that: an infusion channel (12) communicated with the indwelling catheter (2) is formed between the interior of the needle seat (1) and the steel core isolating plug (11), a liquid inlet pipe (4) communicated with the infusion channel (12) is connected to the outer side of the needle seat (1), and a positive pressure joint (41) is communicated with the free end of the liquid inlet pipe (4);
the infusion needle is characterized in that a liquid filling hose (5) is connected to the outer side of the needle base (1), a working substance liquid bag (6) which is communicated with the liquid filling hose (5) and can be expanded is connected to the side wall of the infusion channel (12), a hollow liquid filling injection tube (7) is communicated with the free end of the liquid filling hose (5), a threaded hole is formed in one end, away from the liquid filling hose (5), of the liquid filling injection tube (7), a piston (71) is connected in the liquid filling injection tube (7) in a sliding mode, the piston (71) is connected with a threaded push rod (72) in threaded connection with the threaded hole, a knob (73) is arranged at one end, away from the piston (71), of the threaded push rod (72), and working substance liquid is filled in the liquid filling injection tube (7).
2. The self-sealing type venous indwelling needle of the liquid sac in the needle seat is characterized in that: the needle bar seat (3) is connected with an operation pinching piece (31) arranged along the direction of the needle seat (1).
3. The self-sealing type venous indwelling needle of the liquid sac in the needle seat is characterized in that: the working medium liquid is normal saline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022479338.3U CN213759956U (en) | 2020-10-31 | 2020-10-31 | Self-sealing type venous indwelling needle with liquid bag in needle base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022479338.3U CN213759956U (en) | 2020-10-31 | 2020-10-31 | Self-sealing type venous indwelling needle with liquid bag in needle base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213759956U true CN213759956U (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022479338.3U Active CN213759956U (en) | 2020-10-31 | 2020-10-31 | Self-sealing type venous indwelling needle with liquid bag in needle base |
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| Country | Link |
|---|---|
| CN (1) | CN213759956U (en) |
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2020
- 2020-10-31 CN CN202022479338.3U patent/CN213759956U/en active Active
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