CN104606739A - Anti-thrombotic safety cap for venous indwelling needle and using method thereof - Google Patents
Anti-thrombotic safety cap for venous indwelling needle and using method thereof Download PDFInfo
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- CN104606739A CN104606739A CN201510022550.8A CN201510022550A CN104606739A CN 104606739 A CN104606739 A CN 104606739A CN 201510022550 A CN201510022550 A CN 201510022550A CN 104606739 A CN104606739 A CN 104606739A
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- needle
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/20—Closure caps or plugs for connectors or open ends of tubes
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an anti-thrombotic safety cap for a venous indwelling needle and a using method of the anti-thrombotic safety cap. The anti-thrombotic safety cap comprises a cap base body which covers an infusion cavity opening of an indwelling needle base in a sealing mode and a connecting body which is integrally formed with the cap base body and can be connected with the outer wall of the infusion cavity opening of the indwelling needle base. An enclosed type liquid storage cavity used for generating positive pressure is formed in a cavity of the cap base body, a flaky structure is arranged on the bottom face of the liquid storage cavity, and a micropore which is formed after the flaky structure is punctured by a puncture needle forms a micropore permeating structure through the elasticity of the micropore. After the puncture needle is pulled out, the micropore is closed automatically so that blood in an indwelling needle hose can be effectively prevented from flowing back. After positive pressure liquid medicine is stored in the liquid storage cavity, the micropore can be opened under the action of the positive pressure so that a microchannel can be formed, the liquid medicine in the liquid storage cavity can be slowly dripped into the indwelling needle hose and be pressed towards the inside of a vein blood vessel to prevent the blood from flowing back into the indwelling needle hose, and thrombosis formation can be prevented. The anti-thrombotic safety cap for the venous indwelling needle is novel and simple in structure, low in manufacturing cost, capable of achieving a reliable positive pressure function, and capable of effectively preventing blood return for a long time.
Description
Technical field
The present invention relates to the anti-blood of venous detaining needle and fasten safety head and using method thereof, belong to technical field of medical instruments.
Background technology
All medicinal liquids almost can be inputted human body by blood vessel by transfusion, realize treatment and prophylactic object, in clinical, for avoiding repeatedly the puncture damage causing blood vessel and the misery reducing patient, also for alleviating the manipulation strength of medical personnel, generally employing the anti-blood of iv cannule and fastening safety head (pipe) technology.It is by heparin sealing cap mostly that the iv cannule of present Clinical practice fastens safety head technology with anti-blood, puncture needle, Paracentesis needle holder, retaining needle flexible tube, indwelling needle, indwelling needle-protecting sleeve forms, its remaining needle does not all have positive pressure devices substantially, in use need to use heparin sodium to close indwelling needle tubing, to reach the object not producing thromboembolism in indwelling needle tubing, all need to use acupuncture to be connected in transfusion with the process of indwelling needle tubing being carried out to anticoagulant lock simultaneously, so virtually add workload and the labor intensity of nurse, also there is the danger that medical personnel are accidentally injured by acupuncture simultaneously, for the existence of the problems referred to above, Chinese patent CN103330970A discloses a kind of name and is called that self-styled anti-blood fastens the patent of venous detaining needle and using method thereof, this self-styled anti-blood is fastened venous detaining needle and is comprised needle stand, be arranged on the conduit of needle stand front end and the puncture needle core axially across described needle stand and conduit, the inner chamber of described needle stand is cut off part and is divided into plemum and transfusing chamber two parts, described transfusing chamber is communicated with described conduit, described obstruct section adopts medical encapsulant, described obstruct section is provided with seepage channel, and for when described plemum and transfusing chamber exist pressure differential, the liquid in described plemum can flow into described transfusing chamber through described seepage channel automatic slowly.It mainly utilizes the liquid in plemum slowly to flow into transfusing chamber by described seepage channel; Along with the pressure differential between plemum and transfusing chamber reduces, percolation flow velocity also can slow down thereupon, makes described plemum can maintain malleation for a long time.But this patent application has following two defects: 1. the formation of plemum is in needle stand, and cause complex process, manufacturing cost is high; 2. seepage channel is formed by threading on isolated part, increase difficulty of processing on the one hand, also be the mode of most importantly this line infiltration on the other hand, because single has the possibility coming off and be dissolved in needle stand cavity, fibrous foreign matter is caused to enter in blood of human body with liquid, serious harm health.
Summary of the invention
The object of the invention is to for above-mentioned existing problems and deficiency, provide that a kind of novel structure is simple, cost of manufacture is cheap, use safety the anti-blood of the venous detaining needle of blood backflow that can effectively and for a long time prevent with reliable positive-pressure function fastens safety head and using method thereof.
Technical scheme of the present invention is achieved in that
The anti-blood of venous detaining needle of the present invention fastens safety head, comprise and be placed in indwelling needle infuse cage body on accent and the connector that can with the transfusion accent outer wall of indwelling needle be connected integrated with cage body by having seal cover that elastic medical material makes, it is characterized in that being provided with an enclosed type liquid storage cylinder for generation of malleation in described cage body cavity, and the bottom surface of this liquid storage cylinder is a flaky texture, this flaky texture be punctured acupuncture break after formed micropore be formed as a micropore permeation structure by the elasticity of itself, after puncture needle is extracted, this micropore automatic retracting and effectively stop the blood backflow in retaining needle flexible tube, and after storing malleation medicinal liquid in liquid storage cylinder, this micropore can open at positive pressure and forms microchannel and the medicinal liquid in liquid storage cylinder slowly dropped in retaining needle flexible tube and presses to stop blood backflow in retaining needle flexible tube to vein blood vessel, avoid the formation of thrombosis.
Wherein, above-mentioned enclosed type liquid storage cylinder is made up of with the lower seal being installed on cage body cavity bottom the upper sealing member being fixed on cage body cavity top.
In order to make structure of the present invention varied, both can be that above-mentioned lower seal inner sleeve is fixed in the lower openings of above-mentioned cage body cavity, also can be above-mentioned lower seal be fixed in above-mentioned cage body cavity correspond to connector position cavity shoulder on, can also be that above-mentioned lower seal wrap is placed in the lower openings of above-mentioned cage body cavity.
The anti-blood of venous detaining needle of the present invention fastens the using method of safety head, is characterized in: terminate the tube sealing operation after transfusion and comprise the steps:
I. part extracts the infusion hole of transfusion needle to described transfusion needle front end in liquid storage cylinder;
II. the roller extruding tube for transfusion of the actuator of rolling transfusion device, make the medicinal liquid pressurized in tube for transfusion, the infusion hole through described transfusion needle front end flows into liquid storage cylinder, thus makes the pressure in described liquid storage cylinder be greater than the pressure in indwelling needle cavity bottom space;
III. all extract described transfusion needle, owing to there is pressure differential between described liquid storage cylinder and indwelling needle cavity bottom space, the medicinal liquid in described liquid storage cylinder flows into retaining needle flexible tube through micropore automatic slowly.
The present invention is owing to adopting the structure of the safety head of tool liquid storage cylinder, both safety head can have been utilized reliably to seal indwelling needle cavity, ensure the phenomenon that there will not be after using puncture needle to puncture outside blood backflow indwelling needle cavity, both made medical personnel can extracting easily with one-handed performance puncture needle, effectively prevent again the cross infection of patient and medical personnel, nor there will be the phenomenon of tenderness patient's blood vessel, and avoid surrounding to the pollution of medicinal liquid and blood, reach the object of safe infusion.The non-return valve function of the micropore on the flaky texture between the malleation chamber utilizing again liquid storage cylinder to be formed after having infused dexterously and its bottom surface, the medicinal liquid of this malleation chamber indoor storage is utilized slowly to permeate drippage along the puncture micropore bottom liquid storage cylinder, the backflow of effectively and reliably anti-Hemostatic Oral Liquid, and operation is quite simple, be easy to grasp, be conducive to applying at each different medical unit.During its operational applications, only need when medicinal liquid be totally lost soon, in time extracting transfusion needle, transfusion needle is stopped a little in liquid storage cylinder and adjusts the adjustment button of transfusion device, adjustment button is made to make suddenly the medicinal liquid in tube for transfusion produce flashy outburst flowing and inject in liquid storage cylinder to last pushing away, make the medicinal liquid storing malleation in this liquid storage cylinder, thus the gas compressed in this liquid storage cylinder forms enough large malleation, and after extracting transfusion needle, medicinal liquid in this liquid storage cylinder is under its positive pressure, pin and transfusion needle can be punctured from it lentamente to pierce through the miniature pierced holes formed after bottom it and drop in retaining needle flexible tube and continue to press to vein blood vessel, until form a kind of poised state when pressure in liquid storage cylinder is equal with the blood pressure in human vein, effective guarantee blood also can not produce backflow for a long time, reliably and safely avoid the formation of thrombosis, and (most of tube-sealing solution is anticoagulant not need to adopt anti-freezing liquid tube sealing, some patient prohibits the use), both the labor intensity of nurse had been alleviated, reduce again the medical expense of patient, and structure of the present invention and single reliable, cost of manufacture is cheap, practical, be beneficial to and popularize.
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing explanation
Fig. 1 is the perspective view of the present invention program 1.
Fig. 2 is the cross-sectional view of the present invention program 1.
Fig. 3 is the perspective view of the present invention program 2.
Fig. 4 is the cross-sectional view of the present invention program 2.
Fig. 5 is the perspective view of the present invention program 3.
Fig. 6 is the cross-sectional view of the present invention program 3.
Fig. 7 is the perspective view of the present invention program 4.
Fig. 8 is the cross-sectional view of the present invention program 4.
Fig. 9 is the perspective view of using state 1 of the present invention.
Figure 10 is the decomposition texture schematic diagram of using state 1 of the present invention.
Figure 11 is the cross-sectional view of using state 1 of the present invention.
Figure 12 is the perspective view of using state 2 of the present invention.
Figure 13 is the decomposition texture schematic diagram of using state 2 of the present invention.
Figure 14 is the cross-sectional view of using state 2 of the present invention.
Figure 15 is the perspective view of using state 3 of the present invention.
Figure 16 is the decomposition texture schematic diagram of using state 3 of the present invention.
Figure 17 is the cross-sectional view of using state 3 of the present invention.
Figure 18 is the perspective view of using state 4 of the present invention.
Figure 19 is the decomposition texture schematic diagram of using state 4 of the present invention.
Figure 20 is the cross-sectional view of using state 4 of the present invention.
Detailed description of the invention
As shown in Fig. 1-Figure 20, the anti-blood of venous detaining needle of the present invention fastens safety head, comprise and be placed in indwelling needle infuse cage body 1 on accent and the connector 2 that can with the transfusion accent outer wall of indwelling needle be connected integrated with cage body 1 by having seal cover that elastic medical material makes, an enclosed type liquid storage cylinder 13 for generation of malleation is provided with in described cage body 1 cavity, and the bottom surface of this liquid storage cylinder 13 is a flaky texture, this flaky texture be punctured acupuncture break after formed micropore be formed as a micropore permeation structure by the elasticity of itself, after puncture needle is extracted, this micropore automatic retracting and effectively stop the blood backflow in retaining needle flexible tube, and after storing malleation medicinal liquid in liquid storage cylinder 13, this micropore can open at positive pressure and forms microchannel and the medicinal liquid in liquid storage cylinder slowly dropped in retaining needle flexible tube and presses to stop blood backflow in retaining needle flexible tube to vein blood vessel, avoid the formation of thrombosis.Wherein, above-mentioned enclosed type liquid storage cylinder is made up of with the lower seal 12 being installed on cage body 1 cavity bottom the upper sealing member 11 being fixed on cage body 1 cavity top.And, in order to make structure of the present invention varied, both can be that above-mentioned lower seal 12 inner sleeve is fixed in the lower openings of above-mentioned cage body 1 cavity, also can be above-mentioned lower seal 12 be fixed in above-mentioned cage body 1 cavity correspond to connector 2 position cavity shoulder on, can also be that above-mentioned lower seal 12 wrap is placed in the lower openings of above-mentioned cage body 1 cavity.
The anti-blood of venous detaining needle of the present invention fastens the using method of safety head, is characterized in: terminate the tube sealing operation after transfusion and comprise the steps:
I. part extracts the infusion hole of transfusion needle to described transfusion needle front end in liquid storage cylinder 13;
II. the roller extruding tube for transfusion of the actuator of rolling transfusion device, make the medicinal liquid pressurized in tube for transfusion, the infusion hole through described transfusion needle front end flows into liquid storage cylinder 13, thus makes the pressure in described liquid storage cylinder 13 be greater than the pressure in indwelling needle cavity bottom space;
III. all extract described transfusion needle, owing to there is pressure differential between described liquid storage cylinder 13 and indwelling needle cavity bottom space, the medicinal liquid in described liquid storage cylinder 13 flows into retaining needle flexible tube through micropore automatic slowly.
The present invention is owing to adopting the structure of the safety head of tool liquid storage cylinder, both safety head can have been utilized reliably to seal indwelling needle cavity, ensure the phenomenon that there will not be after using puncture needle to puncture outside blood backflow indwelling needle cavity, both made medical personnel can extracting easily with one-handed performance puncture needle, effectively prevent again the cross infection of patient and medical personnel, nor there will be the phenomenon of tenderness patient's blood vessel, and avoid surrounding to the pollution of medicinal liquid and blood, reach the object of safe infusion.The non-return valve function of the micropore on the flaky texture between the malleation chamber utilizing again liquid storage cylinder to be formed after having infused dexterously and its bottom surface, the medicinal liquid of this malleation chamber indoor storage is utilized slowly to permeate drippage along the puncture micropore bottom liquid storage cylinder, the backflow of effectively and reliably anti-Hemostatic Oral Liquid, and operation is quite simple, be easy to grasp, be conducive to applying at each different medical unit.During its operational applications, only need when medicinal liquid be totally lost soon, in time extracting transfusion needle, transfusion needle is stopped a little in liquid storage cylinder and adjusts the adjustment button of transfusion device, adjustment button is made to make suddenly the medicinal liquid in tube for transfusion produce flashy outburst flowing and inject in liquid storage cylinder to last pushing away, make the medicinal liquid storing malleation in this liquid storage cylinder, thus the gas compressed in this liquid storage cylinder forms enough large malleation, and after extracting transfusion needle, medicinal liquid in this liquid storage cylinder is under its positive pressure, pin and transfusion needle can be punctured from it lentamente to pierce through the miniature pierced holes formed after bottom it and drop in retaining needle flexible tube and continue to press to vein blood vessel, until form a kind of poised state when pressure in liquid storage cylinder is equal with the blood pressure in human vein, effective guarantee blood also can not produce backflow for a long time, reliably and safely avoid the formation of thrombosis, and (most of tube-sealing solution is anticoagulant not need to adopt anti-freezing liquid tube sealing, some patient prohibits the use), both the labor intensity of nurse had been alleviated, reduce again the medical expense of patient, and structure of the present invention and single reliable, cost of manufacture is cheap, practical, be beneficial to and popularize.
The present invention is described by embodiment, but the present invention is not construed as limiting, with reference to description of the invention, other changes of the disclosed embodiments, as the professional person for this area easily expects, such change should belong within the scope of the claims in the present invention restriction.
Claims (6)
1. the anti-blood of venous detaining needle fastens safety head, comprise and be placed in indwelling needle infuse cage body (1) on accent and the connector (2) that can with the transfusion accent outer wall of indwelling needle be connected integrated with cage body (1) by having seal cover that elastic medical material makes, it is characterized in that being provided with an enclosed type liquid storage cylinder (13) for generation of malleation in described cage body (1) cavity, and the bottom surface of this liquid storage cylinder (13) is a flaky texture, this flaky texture be punctured acupuncture break after formed micropore be formed as a micropore permeation structure by the elasticity of itself, after puncture needle is extracted, this micropore automatic retracting and effectively stop the blood backflow in retaining needle flexible tube, and after storing malleation medicinal liquid in liquid storage cylinder (13), this micropore can open at positive pressure and forms microchannel and the medicinal liquid in liquid storage cylinder slowly dropped in retaining needle flexible tube and presses to stop blood backflow in retaining needle flexible tube to vein blood vessel, avoid the formation of thrombosis.
2. the anti-blood of venous detaining needle fastens safety head according to claim 1, it is characterized in that above-mentioned enclosed type liquid storage cylinder is made up of the upper sealing member (11) being fixed on cage body (1) cavity top and the lower seal (12) that is installed on cage body (1) cavity bottom.
3. the anti-blood of venous detaining needle fastens safety head according to claim 2, it is characterized in that above-mentioned lower seal (12) inner sleeve is fixed in the lower openings of above-mentioned cage body (1) cavity.
4. the anti-blood of venous detaining needle fastens safety head according to claim 2, it is characterized in that on the cavity shoulder corresponding to connector (2) position that above-mentioned lower seal (12) is fixed in above-mentioned cage body (1) cavity.
5. the anti-blood of venous detaining needle fastens safety head according to claim 2, it is characterized in that above-mentioned lower seal (12) wrap is placed in the lower openings of above-mentioned cage body (1) cavity.
6. venous detaining needle as claimed in claim 1 fastens a using method for safety head with anti-blood, it is characterized in that: terminate the tube sealing operation after transfusion and comprise the steps:
I. part extracts the infusion hole of transfusion needle to described transfusion needle front end in liquid storage cylinder (13);
II. the roller extruding tube for transfusion of the actuator of rolling transfusion device, make the medicinal liquid pressurized in tube for transfusion, infusion hole through described transfusion needle front end flows into liquid storage cylinder (13), thus makes the pressure in described liquid storage cylinder (13) be greater than the pressure in indwelling needle cavity bottom space;
III. all extract described transfusion needle, owing to there is pressure differential between described liquid storage cylinder (13) and indwelling needle cavity bottom space, the medicinal liquid in described liquid storage cylinder (13) flows into retaining needle flexible tube through micropore automatic slowly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510022550.8A CN104606739A (en) | 2015-01-17 | 2015-01-17 | Anti-thrombotic safety cap for venous indwelling needle and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510022550.8A CN104606739A (en) | 2015-01-17 | 2015-01-17 | Anti-thrombotic safety cap for venous indwelling needle and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104606739A true CN104606739A (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510022550.8A Pending CN104606739A (en) | 2015-01-17 | 2015-01-17 | Anti-thrombotic safety cap for venous indwelling needle and using method thereof |
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| CN (1) | CN104606739A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251081A (en) * | 2015-11-18 | 2016-01-20 | 谢世庚 | Positive pressure cavity type remaining needle and method of preventing thrombi through positive pressure cavity type remaining needle |
| US20190329173A1 (en) * | 2016-12-27 | 2019-10-31 | Shanghai Jiaotong University | Device for preventing contamination of positive-pressure connector of indwelling needle and method based on same |
| WO2023173808A1 (en) * | 2021-09-10 | 2023-09-21 | 邓三明 | Pressure conversion device and infusion connection joint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5743886A (en) * | 1994-02-15 | 1998-04-28 | Lawrence A. Lynn | Sequential medical fluid aspiration and injection system and method |
| CN203971056U (en) * | 2014-06-27 | 2014-12-03 | 陈伟权 | A kind of remaining needle |
| CN203971057U (en) * | 2014-06-27 | 2014-12-03 | 陈伟权 | A kind of remaining needle |
| CN204411414U (en) * | 2015-01-17 | 2015-06-24 | 陈伟权 | The anti-blood of a kind of venous detaining needle fastens safety head |
-
2015
- 2015-01-17 CN CN201510022550.8A patent/CN104606739A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5743886A (en) * | 1994-02-15 | 1998-04-28 | Lawrence A. Lynn | Sequential medical fluid aspiration and injection system and method |
| CN203971056U (en) * | 2014-06-27 | 2014-12-03 | 陈伟权 | A kind of remaining needle |
| CN203971057U (en) * | 2014-06-27 | 2014-12-03 | 陈伟权 | A kind of remaining needle |
| CN204411414U (en) * | 2015-01-17 | 2015-06-24 | 陈伟权 | The anti-blood of a kind of venous detaining needle fastens safety head |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251081A (en) * | 2015-11-18 | 2016-01-20 | 谢世庚 | Positive pressure cavity type remaining needle and method of preventing thrombi through positive pressure cavity type remaining needle |
| US20190329173A1 (en) * | 2016-12-27 | 2019-10-31 | Shanghai Jiaotong University | Device for preventing contamination of positive-pressure connector of indwelling needle and method based on same |
| US11697014B2 (en) * | 2016-12-27 | 2023-07-11 | Shanghai Jiao Tong University | Device for preventing contamination of positive-pressure connector of indwelling needle and method based on same |
| WO2023173808A1 (en) * | 2021-09-10 | 2023-09-21 | 邓三明 | Pressure conversion device and infusion connection joint |
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Application publication date: 20150513 |
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