CN109011005B - Sterile anti-reflux indwelling needle easy to puncture - Google Patents
Sterile anti-reflux indwelling needle easy to puncture Download PDFInfo
- Publication number
- CN109011005B CN109011005B CN201810882926.6A CN201810882926A CN109011005B CN 109011005 B CN109011005 B CN 109011005B CN 201810882926 A CN201810882926 A CN 201810882926A CN 109011005 B CN109011005 B CN 109011005B
- Authority
- CN
- China
- Prior art keywords
- needle
- indwelling
- puncture
- plugging core
- plugging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M2005/1586—Holding accessories for holding infusion needles on the body
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides an easy-to-puncture sterile anti-reflux indwelling needle, which mainly comprises an elastic belt, a main channel, an indwelling hose, a puncture steel needle, fixing components positioned at two sides of the main channel, a plugging core and a plugging core catheter, wherein the front end of the indwelling hose is provided with a transition ring which is gradually thinned along the infusion direction, the inner wall of the transition ring is in a truncated cone shape, and the tail end of a conical needle point of the puncture steel needle can be wrapped, so that the indwelling hose is prevented from retracting during puncture. The plugging core is positioned in the elastic band, and can freely enter and exit the indwelling hose along with the stretching and natural retraction of the elastic band so that the indwelling hose is in a plugged or open state, and the plugging core catheter is positioned in the main channel and used for guiding the plugging core. The sterile anti-reflux indwelling needle can seal the whole indwelling hose under a sterile sealing state, and completely eradicates the phenomena of blood return and coagulation.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to an easy-to-puncture sterile anti-reflux indwelling needle.
Background
Indwelling needles are a common infusion set in clinical applications. The mode of carrying out transfusion by single puncture and repeated use for multiple times in the subsequent treatment time reduces the pain of patients and the workload of medical staff, and reduces the occurrence probability of puncture accidents.
Since it remains on the patient's body for a long period of time and its flexible needle cannula portion is in direct contact with the patient's blood. Accordingly, flexible needle tubes of indwelling needles are typically made of biocompatible materials. Studies by scholars have shown that the retention time of the indwelling needle can be up to 7 days or more, provided that no tube blockage or leakage occurs, while maintaining the relatively sterile penetration portion and clean surrounding skin. The longest retention time in the clinical observations was 27 days. However, in reality, during the intermittent infusion, the back flow of blood and the tube blockage phenomenon caused by the coagulation of the back flow blood are extremely easy to occur, so that the indwelling needle loses the meaning of indwelling.
In addition, the indwelling needle has a problem that the indwelling needle cannot be fixed for a long time in the using process. Such problems are mainly manifested in the fact that the pain is relatively intolerable, and in the course of a patient's heavy sweating or the need for continuous exercise. The assisted delivery process of oxytocin using an indwelling needle at the same time as delivery is one of the most common modes of operation at present, for example in obstetric wards. Parturients suffer from severe pain during childbirth, with a large amount of sweating, and require constant exertion. In this case, the conventional patch fixation method is often maintained for only one or two hours, which results in frequent re-fixation and even replacement of the indwelling needle for medical staff.
The indwelling needles in the prior art are mainly classified into an a type (open type) and a Y type (closed type). The operation mode of the A-type indwelling needle is that the tube sealing liquid is injected into the heparin cap through the injector, the needle is withdrawn while the tube sealing liquid is injected, the blood is prevented from being sucked to return blood when the needle is withdrawn, and the retaining needle extension tube is clamped by the clamp after the tube sealing liquid is injected. However, the operation mode of needle withdrawal while injection is too complex, and errors are very easy to occur to cause blood return.
For the check and tube sealing of the Y-shaped indwelling needle, for example, a flow stop clip or a flow restrictor is arranged on a connecting tube to prevent blood from flowing back, but the method is similar to the tube sealing method of the A-shaped indwelling needle, and the problem that injection tube sealing liquid is too complex cannot be solved.
Chen Dajin and the like have devised an indwelling needle (CN 105935460 a) with a flow stop switch, in which the balloon tube 8 upstream of the indwelling soft needle is pressed by the spiral pushing (closed state) of the dc switch, and the liquid passage between the indwelling soft tube and the outside is cut off to thereby stop the flow. The flow stopping switch of the scheme is still a flow stopping clamp in nature, but the flow stopping point is more forward than the conventional flow stopping clamp, and blood cannot flow back into the needle body of the indwelling needle. But this solution requires stopping the flow by means of the compression of the balloon tube, the screw switch outside the needle body needs to be left outside the fixation patch for screwing, and the indwelling needle is larger in size, resulting in more complicated fixation problems, and still the solution does not take into account the problem of blood reflux into the indwelling hose.
The puncture principle of the indwelling needle is that the puncture steel needle punctures the blood vessel wall and then drives the indwelling hose to enter the vein. The existing indwelling needle is made of softer flexible materials due to the consideration of indwelling safety, when the indwelling needle is used for puncturing, the indwelling hose and the puncturing steel needle are different in diameter, so that after the needle tip of the steel needle is punctured into a blood vessel, the indwelling hose still receives resistance of the blood vessel wall, and accordingly retraction or tube withdrawal of the indwelling hose relative to the steel needle is generated, and damage to the blood vessel wall is large.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a sterile anti-reflux indwelling needle which is easy to puncture. Through improving the indwelling hose for during the re-puncture, can not produce sliding displacement between indwelling hose and the puncture steel needle, stopped the phenomenon that the indwelling hose was retracted and was moved back the pipe, simultaneously the indwelling needle is easily laminated and is kept somewhere the position fixedly, and can prevent that blood from flowing back and getting into the indwelling hose, thereby thoroughly stopping the formation of blood coagulation, thrombus.
The terms "leading", "trailing", "downstream", etc. are used herein. Wherein, when in transfusion, the flowing direction of the liquid medicine is the front end and the downstream.
In order to achieve the above purpose, the present invention provides the following technical solutions.
An easy-to-puncture sterile anti-reflux indwelling needle comprises a needle body assembly 1, a fixing assembly 2, a puncture assembly 3 and a tube sealing assembly 4. The needle body assembly comprises a main channel 11, an infusion interface 12, an indwelling hose 13 and a soft rubber plug 14, wherein the indwelling hose 13 and the soft rubber plug 14 are respectively and fixedly arranged at two ends of the main channel 11, and the infusion interface 12 is arranged on the side wall of the main channel 11 and communicated with the outside; the fixing component 2 comprises a plurality of fins fixedly arranged on the outer side wall of the main channel 11, one side of each fin is coated with an adhesive, one side of each fin is provided with a covering, and the covering can be directly attached and fixed at the indwelling position after being torn off in use; the puncture assembly 3 comprises a puncture steel needle 31, a puncture steel needle fixing plug 32, an end cap 33, a needle handle (not shown in the figure) and a steel needle sleeve (not shown in the figure), wherein the tail end of the steel needle 31 is fixed on the puncture steel needle fixing plug 32, the puncture steel needle fixing plug 32 is embedded in the end cap 33, the end cap 33 is fixedly arranged at the tail end of the steel needle sleeve, and the steel needle sleeve is slidably sleeved outside the main channel 11 and can be removed from the main channel 11; the tube sealing assembly 4 comprises an elastic band 42, a sealing core 44, a sealing core conduit 41 and a sealing membrane 47, one end of the elastic band 42 is fixedly arranged on the side wall of the main channel 11, the other end of the elastic band can be freely stretched, a hollow groove 43 is formed in the elastic band, a round hole 48 communicated with one end of the hollow groove 43 is formed in the side wall of the main channel 11, the sealing core 44 is made of a solid flexible material and is sealed and arranged in the hollow groove 43 of the elastic band 42, the sealing core 44 can extend into the main channel 11 through the round hole 48 formed in the side wall of the main channel 11, one side of the round hole 48 located in the main channel 11 is connected with the sealing core conduit 41, the other end of the sealing core conduit 41 is connected with the tail end of the indwelling hose 13, when the elastic band 42 naturally contracts, the sealing core 44 can penetrate through the sealing core conduit 41 to enter the indwelling hose 13 by means of retraction elasticity to prevent blood backflow, and when the elastic band 42 stretches, the sealing core 44 is pulled out of the indwelling hose 13, and the transfusion channel is opened. The side of the plugging core catheter 41, which is close to the indwelling hose 13, is provided with a strip-shaped hole 45 and an annular belt which is used for abutting against the tail end of the indwelling hose 13 and is not provided with a hole, so that the liquid medicine can enter the indwelling hose conveniently, and the side of the plugging core catheter 41, which is close to the soft rubber plug 14, is provided with a circular opening 49 for the penetration steel needle 31 to pass through.
Preferably, the plugging core catheter 41 comprises a straight tube section 411 and an arc tube section 412, wherein one end of the arc tube section 412 is connected to the upper part (the side close to the soft rubber plug) of the straight tube section 411, and the other end is communicated with the round hole 48 on the side wall of the main channel 11; the lower section of the straight pipe section 411 (i.e. the side close to the indwelling hose) is a shared channel of the puncture steel needle 31 and the plugging core 44, the upper section of the straight pipe section 411 is a channel of the puncture steel needle 31, and the arc pipe section 412 is a channel of the plugging core 44; the sealing diaphragm 47 is disposed within the arcuate tube segment 412.
Preferably, the distal end of the hollow channel 43 (the end remote from the main channel) is provided with a securing structure 46 enabling the plugging core 44 to be withdrawn or pushed into the indwelling hose 13 as the elastic band 42 is stretched or retracted.
Preferably, the fixing structure 46 is a fixing groove with a larger diameter than the rest of the hollow groove 43, and the tail end of the plugging core 44 is provided with a section with a larger diameter matched with the fixing groove, so that the tail end of the plugging core 44 is clamped in the fixing groove.
Preferably, the plugging core 44 is configured such that, when the elastic band 42 is naturally retracted, the front end of the plugging core 44 is moved to just the opening of the indwelling hose 13, thereby discharging blood and liquid medicine in the whole indwelling hose 13 and plugging the whole indwelling hose 13; when the elastic band 42 is stretched to the maximum length, the front end of the plugging core 44 remains in the arcuate tube section 412 of the plugging core conduit 41 and downstream of the sealing membrane 47, thereby preventing the plugging core 44 from backing out of the openings of the plugging core conduit 41 and sealing membrane 47.
Preferably, the elastic band 42 is disposed adjacent to and parallel to one side wing of the fixing assembly 2, the distal end (the side far from the main channel) of the elastic band 42 is provided with a fixing portion 50, and an attaching portion matched with the fixing portion 50 is disposed on the side wing adjacent to the elastic band 42, and the attaching portion extends along the radial direction of the side wing, so that the elastic band 42 can be fixed between the fixing portion 50 and the attaching portion in the whole range of natural shrinkage and maximum stretching.
Preferably, the fixing portion 50 is a hook, a self-adhesive or a magic tape.
Preferably, the fins of the fixing assembly 2 are made of flexible materials, the covering on the glue-coated side is a rigid sheet, and the glue-coated side of the fins is adhered to the rigid sheet, so that the elastic band 42 can be kept in a stretched state when not in use, the plugging core 44 is withdrawn from the straight tube section 411 of the plugging core catheter 41, and the straight tube section 411 is opened for the piercing steel needle 31.
Preferably, the front end (the end far away from the indwelling needle) of the indwelling hose 13 has a thinner transition ring 15 compared with the rest, which gradually contracts toward the puncture steel needle in the direction approaching the puncture steel needle 31, thereby exhibiting an arcuate busbar, so that the indwelling hose enters the blood vessel along with the puncture steel needle 31, while reducing damage to the blood vessel wall at the time of puncture.
Preferably, the elastic band 42 is made of silicone rubber or foldable material with a spring inside.
Preferably, the indwelling needle is packaged aseptically, such as in a sterile plastic bag or the like.
Preferably, the diameter of the occlusion core 44 is smaller than the inner diameter of the indwelling hose 13, thereby preventing the suction effect on blood from developing during re-stretching of the elastic band 42 after occlusion.
Preferably, a soft rubber plug is arranged at the upper part of the straight pipe section of the plugging core catheter 41, and after the puncture steel needle 31 is withdrawn, the liquid medicine cannot enter from the circular opening 49 at the upper part of the plugging core catheter 41.
Preferably, the whole straight tube section of the plugging core catheter 41 is provided with a strip-shaped hole 45, and a filter membrane is fixedly attached to the inner wall of the plugging core catheter 41, so that blood cells are prevented from entering the main channel 11 through the strip-shaped hole 45.
Preferably, the sealing gap 51 may be a channel formed on the surface of the sealing core 44, so that when the sealing core 44 is drawn out, the sealing liquid or the liquid medicine can be synchronously injected into the blood vessel by pushing the sealing liquid or the liquid medicine into the blood vessel from the sealing gap 51, and negative pressure generated when the sealing core 44 is drawn out is balanced, so as to prevent suction effect on blood.
The specific use method of the sterile anti-reflux indwelling needle easy to puncture comprises the following steps: taking out the sterile plastic package bag for packaging, taking out the detaining needle, wherein the wing piece of the fixing component 2 is well adhered to the rigid sheet, the elastic band 42 is in a stretching state and is fixed on the attaching part of one wing piece through the fixing part 50 at the far end of the elastic band, the puncture steel needle 31 is inserted into the detaining hose 13, and the needle point part of the puncture steel needle 31 is exposed out of the detaining hose; puncturing according to the conventional puncture step of the indwelling needle, and withdrawing the steel needle after puncturing is finished; tearing the two side wings of the fixing assembly 2 from the two ends, removing the rigid sheet after separating from the rigid sheet, and attaching the glued side of the wings to the indwelling position of the human body, wherein the elastic belt 42 is still in a stretched state; attaching a sterile film at the puncture point between the indwelling hose 13 and the skin; injecting the liquid medicine according to the operation mode of the conventional retention needle; when the injection of the liquid medicine is required to be interrupted, the fixing part 50 and the attaching part are separated, so that the elastic belt 42 is slowly retracted, the fixing part 50 and the attaching part are combined and fixed after the elastic belt is retracted to a natural state, and at the moment, the tube sealing liquid can be selectively injected from the infusion interface 12 to further improve the tube sealing effect.
According to the invention, the plugging core 44 is directly led into the indwelling hose 13, so that blood is prevented from entering the indwelling hose 13 and the main channel 11, and blood backflow is blocked, so that coagulation or thrombus cannot occur in the main channel 11 of the indwelling needle or in the indwelling hose 13, meanwhile, the flexible plugging core 44 is guided by the plugging core guide pipe 41, so that the flexible plugging core 44 can smoothly enter and exit the indwelling hose 13, and the plugging core 44 is completely sealed in the indwelling needle by the integrally sealed elastic band 42, so that bacteria are prevented from being brought in the process of pulling the plugging core. In addition, in actual use, the sealing gap 51 between the sealing core 44 and the indwelling hose 13 can be further filled by optionally matching with conventional sealing liquid, so that the sealing effect is improved. Compared with the conventional indwelling needle without the fixing component, the indwelling needle provided by the invention has the advantages that the indwelling needle is provided with the fixing component, and the phenomenon that the indwelling needle is misplaced in the indwelling process due to factors such as patient twisting and the like can be effectively improved, so that the indwelling hose 13 is pulled out.
Drawings
For further disclosure of the present invention, the following detailed description is given with reference to the accompanying examples and drawings, in which:
FIG. 1 is an overall schematic view of an easy-to-puncture sterile anti-reflux catheter according to the present invention;
FIG. 2 is a schematic illustration of a plugged core catheter;
FIG. 3 is a schematic view of an elastic belt;
FIG. 4 is a cross-sectional view of an elastic band;
FIG. 5 is an enlarged view of a portion of area A of FIG. 1;
FIG. 6 is an enlarged partial view of region B of FIG. 1;
FIG. 7 is a schematic view of the indwelling hose in a plugged state;
fig. 8 is a schematic view of transition ring 15 enveloping the steel needle.
In the figure: needle body assembly 1, fixing assembly 2, puncture assembly 3, tube sealing assembly 4, main channel 11, infusion port 12, indwelling hose 13, soft rubber plug 14, transition ring 15, puncture steel needle 31, puncture steel needle fixing plug 32, end cap 33, plugging core catheter 41, straight tube section 411, arc tube section 412, elastic band 42, hollow groove 43, plugging core 44, bar-shaped hole 45, fixing structure 46, sealing membrane 47, round hole 48, round opening 49, fixing portion 50, plugging gap 51.
Detailed Description
The technical scheme of the present invention is further described below with reference to examples.
Example 1
As shown in fig. 1-6, a sterile anti-reflux indwelling needle easy to puncture comprises a needle body assembly 1, a fixing assembly 2, a puncture assembly 3 and a tube sealing assembly 4. The needle body assembly comprises a main channel 11, an infusion interface 12, an indwelling hose 13 and a soft rubber plug 14, wherein the indwelling hose 13 and the soft rubber plug 14 are respectively and fixedly arranged at two ends of the main channel 11, and the infusion interface 12 is arranged on the side wall of the main channel 11 and is communicated with the outside; the fixing component 2 comprises a plurality of fins fixedly arranged on the outer side wall of the main channel 11, one side of each fin is coated with an adhesive, one side of each fin is provided with a covering, and the covering can be directly attached and fixed at the indwelling position after being torn off in use; the puncture assembly 3 comprises a puncture steel needle 31, a puncture steel needle fixing plug 32, an end cap 33, a needle handle (not shown in the figure) and a steel needle sleeve (not shown in the figure), wherein the tail end of the steel needle 31 is fixed on the puncture steel needle fixing plug 32, the puncture steel needle fixing plug 32 is embedded in the end cap 33, the end cap 33 is fixedly arranged at the tail end of the steel needle sleeve, and the steel needle sleeve is slidably sleeved outside the main channel 11 and can be removed from the main channel 11; the tube sealing assembly 4 comprises an elastic belt 42, a sealing core 44, a sealing core conduit 41 and a sealing membrane 47, one end of the elastic belt 42 is fixedly arranged on the side wall of the main channel 11, the other end of the elastic belt can be freely stretched, a hollow groove 43 is formed in the elastic belt, a round hole 48 communicated with one end of the hollow groove 43 is formed in the side wall of the main channel 11, the sealing core 44 is made of a solid flexible material and is sealed and arranged in the hollow groove 43 of the elastic belt 42, the sealing core 44 can extend into the main channel 11 through the round hole 48 formed in the side wall of the main channel 11, one side of the round hole 48 is located in the main channel and is connected with the sealing core conduit 41, the other end of the sealing core conduit 41 is connected with the tail end of the indwelling hose 13, when the elastic belt 42 naturally contracts, the sealing core 44 can penetrate through the sealing core conduit 41 to enter the indwelling hose 13 by means of retraction elasticity to prevent blood backflow, and when the elastic belt 42 stretches, the sealing core 44 is pulled out of the indwelling hose 13, and the transfusion channel is opened. The side of the plugging core catheter 41, which is close to the indwelling hose 13, is provided with a liquid medicine channel and an annular belt which is used for abutting against the tail end of the indwelling hose 13 and is not provided with a hole, so that liquid medicine can conveniently enter the indwelling hose, and the side of the plugging core catheter 41, which is close to the soft rubber plug 14, is provided with a circular opening 49 for the penetration steel needle 31 to pass through.
Preferably, the plugging core catheter 41 comprises a straight tube section 411 and an arc tube section 412, wherein one end of the arc tube section 412 is connected to the middle upper part (the side close to the soft rubber plug) of the straight tube section 411, and the other end is communicated with the round hole 48 on the side wall of the main channel 11; the lower section of the straight pipe section 411 (i.e. the side close to the indwelling hose) is a shared channel of the puncture steel needle 31 and the plugging core 44, the upper section of the straight pipe section 411 is a channel of the puncture steel needle 31, and the arc pipe section 412 is a channel of the plugging core 44; the sealing diaphragm 47 is disposed within the arcuate tube segment 412. The lower part of the straight pipe section 411 is abutted against the inner side wall of the main channel 11, and the liquid medicine channel is arranged on the side wall of the lower part of the straight pipe section 411.
Preferably, the liquid medicine passage is a bar-shaped hole 45.
Preferably, the distal end of the hollow channel 43 (the end remote from the main channel) is provided with a securing structure 46 enabling the plugging core 44 to be withdrawn or pushed into the indwelling hose 13 as the elastic band 42 is stretched or retracted.
Preferably, the fixing structure 46 is a fixing groove with a larger diameter than the rest of the hollow groove 43, and the tail end of the plugging core 44 is provided with a section with a larger diameter matched with the fixing groove, so that the tail end of the plugging core 44 is clamped in the fixing groove.
Preferably, the plugging core 44 is configured such that, when the elastic band 42 is naturally retracted, the front end of the plugging core 44 is moved to just the opening of the front end of the indwelling hose 13, thereby discharging blood and liquid medicine in the whole indwelling hose 13 and plugging the whole indwelling hose 13; when the elastic band 42 is stretched to the maximum length, the front end of the plugging core 44 remains in the arcuate tube section 412 of the plugging core conduit 41 and is located downstream of the sealing membrane 47, thereby preventing the plugging core 44 from backing out of the openings of the plugging core conduit 41 and the sealing membrane 47.
Preferably, the elastic band 42 is disposed adjacent to and parallel to one side wing of the fixing assembly 2, the distal end (the side far from the main channel) of the elastic band 42 is provided with a fixing portion 50, and an attaching portion matched with the fixing portion 50 is disposed on the side wing adjacent to the elastic band 42, and the attaching portion extends along the radial direction of the side wing, so that the elastic band 42 can be fixed between the fixing portion 50 and the attaching portion in the whole range of natural shrinkage and maximum stretching.
Preferably, the fixing portion 50 is a hook, a self-adhesive or a magic tape.
Preferably, the fins of the fixing assembly 2 are made of flexible materials, the covering on the glue-coated side is a rigid sheet, and the glue-coated side of the fins is adhered to the rigid sheet, so that the elastic band 42 can be kept in a stretched state when not in use, the plugging core 44 is withdrawn from the straight tube section 411 of the plugging core catheter 41, and the straight tube section 411 is opened for the piercing steel needle 31.
Preferably, the glue-coated sides of the fins on both sides of the main channel 11 are covered by the same rigid sheet.
Preferably, the front end of the indwelling hose 13 is provided with a transition ring 15 which is gradually thinned in the infusion direction, and the outer side wall of the indwelling hose gradually contracts towards the puncture steel needle in the infusion direction, so that a curved bus is presented, the indwelling hose enters a blood vessel along with the puncture steel needle 31, and meanwhile, the damage to the blood vessel wall during puncture is reduced; the inner side wall of the transition ring 15 is in a tapered truncated cone shape in the infusion direction, and the tip of the puncture steel needle 31 is conical;
preferably, the bus inclination angle of the truncated cone is equal to or greater than the bus inclination angle of the conical needle tip of the puncture steel needle 31, so that during puncture, the inner side wall of the transition ring 15 wraps the tail end of the needle tip of the puncture steel needle 31, the needle tip of the puncture steel needle 31 supports the transition ring 15 and drives the indwelling hose 13 to puncture forwards, and the blocking of the indwelling hose 13 by the vascular wall caused by the difference in diameter between the indwelling hose 13 and the steel needle during puncture is prevented, so that the indwelling hose 13 is retracted during puncture.
Since the height of the transition ring 15 (i.e., the height of the truncated cone) directly affects the front opening caliber of the transition ring 15, i.e., the front opening caliber of the indwelling hose 13. If the caliber of the front opening is too small (namely, the transition ring 15 is too high), obvious liquid medicine jet flow can be formed during transfusion, so that a person to be transfused generates uncomfortable reaction, and the too small opening is easier to form blockage; if the diameter of the front opening is too large (i.e., the height of the transition ring 15 is too low), the adhesion area of the inner wall on the needle tip surface is too small, and considering that the indwelling hose 13 is made of a flexible material, and the transition ring 15 is thinner than the main body of the indwelling hose 13, the transition ring 15 is easily retracted due to the too low height, so that the purpose of easy puncture cannot be achieved. Therefore, the height of the transition ring 15 is preferably 0.1 to 0.6 times, more preferably 0.2 to 0.5 times, and still more preferably 0.3 to 0.4 times the height of the tip of the piercing steel needle 31.
Preferably, the plugging core 44 has a hemispherical front end, and the diameter of the plugging core 44 is smaller than the inner diameter of the main body portion of the indwelling hose, so that in the plugged state, the hemispherical portion of the front end of the plugging core 44 abuts against the inner side wall of the transition ring 15, and a plugging gap 51 is formed between the plugging core 44 and the inner wall of the indwelling hose 13.
Preferably, the elastic band 42 is made of silicone rubber or foldable material with a spring inside.
Preferably, the diameter of the occlusion core 44 is smaller than the inner diameter of the indwelling hose 13, thereby preventing the suction effect on blood from developing during re-stretching of the elastic band 42 after occlusion.
Preferably, a soft rubber plug is arranged at the upper part of the straight pipe section of the plugging core catheter 41, and after the puncture steel needle 31 is withdrawn, the liquid medicine cannot enter from the circular opening 49 at the upper part of the plugging core catheter 41.
Preferably, the whole straight tube section of the plugging core catheter 41 is provided with a strip-shaped hole 45, and a filter membrane is fixedly attached to the inner wall of the plugging core catheter 41, so that blood cells are prevented from entering the main channel 11 through the strip-shaped hole 45.
The specific use method of the sterile anti-reflux indwelling needle easy to puncture comprises the following steps: taking out the sterile plastic package bag for packaging, taking out the detaining needle, wherein the wing piece of the fixing component 2 is well adhered to the rigid sheet, the elastic band 42 is in a stretching state and is fixed on the attaching part of one wing piece through the fixing part 50 at the far end of the elastic band, the puncture steel needle 31 is inserted into the detaining hose 13, and the needle point part of the puncture steel needle 31 is exposed out of the detaining hose; puncturing according to the conventional puncture step of the indwelling needle, and withdrawing the steel needle after puncturing is finished; tearing the two side wings of the fixing assembly 2 from the two ends, removing the rigid sheet after separating from the rigid sheet, and attaching the glued side of the wings to the indwelling position of the human body, wherein the elastic belt 42 is still in a stretched state; attaching a sterile film at the puncture point between the indwelling hose 13 and the skin; injecting the liquid medicine according to the operation mode of the conventional retention needle; when the injection of the liquid medicine is required to be interrupted, the fixing part 50 and the attaching part are separated, so that the elastic belt 42 is slowly retracted, the fixing part 50 and the attaching part are combined and fixed after the elastic belt is retracted to a natural state, and at the moment, the tube sealing liquid can be selectively injected from the infusion interface 12 to further improve the tube sealing effect.
Claims (3)
1. The utility model provides an easy aseptic anti-reflux retention needle of puncture, includes needle body subassembly (1), fixed subassembly (2), puncture subassembly (3), tube sealing subassembly (4), needle body subassembly (1) include main channel (11), infusion interface (12), keep somewhere hose (13), soft plug (14), its characterized in that: the puncture assembly (3) comprises a puncture steel needle (31) with a conical needle tip, a transition ring (15) which is gradually thinned in the infusion direction is arranged at the front end of the indwelling hose (13), the generatrix of the outer side wall of the indwelling hose is arc-shaped, the inner side wall of the indwelling hose is in a tapered truncated cone shape in the infusion direction, and the inclination angle of the generatrix of the truncated cone shape is not smaller than the inclination angle of the generatrix of the conical needle tip of the puncture steel needle (31), so that the transition ring (15) is wrapped at the tail end of the needle tip of the puncture steel needle (31); the fixing assembly (2) comprises adhesive fins fixed on two sides of the main channel (11); the tube sealing assembly (4) comprises a plugging core catheter (41) positioned in the main channel (11) and an elastic belt (42) positioned outside the main channel (11), one end of the elastic belt (42) is communicated with the plugging core catheter (41), a plugging core (44) is arranged in the elastic belt, and the plugging core (44) can enter the indwelling hose (13) under the guidance of the plugging core catheter (41) by means of the retraction elasticity of the elastic belt (42); the plugging core (44) is provided with a hemispherical front end, and the diameter of the plugging core (44) is smaller than the inner diameter of the main body part of the indwelling hose (13), so that in a plugging state, the hemispherical front end of the plugging core (44) abuts against the inner side wall of the transition ring (15), and a plugging gap (51) is formed between the plugging core (44) and the inner wall of the indwelling hose (13); the plugging core conduit (41) is arranged in the main channel (11) and comprises a straight pipe section (411) and an arc pipe section (412) communicated with the upper part of the straight pipe section (411), a sealing membrane (47) is arranged in the arc pipe section (412), and an opening matched with the plugging core (44) in a sealing way is arranged on the sealing membrane (47); a circular hole (48) is formed in the side wall of the main channel (11), and one end of the arc-shaped pipe section (412) is communicated with the circular hole (48); the elastic belt (42) is positioned outside the main channel (11), one end of the elastic belt is fixedly connected with the side wall of the main channel (11), a hollow groove (43) extending along the axial direction of the elastic belt is formed in the elastic belt (42), one end of the hollow groove (43) is communicated with the round hole (48), and the plugging core (44) passes through the round hole (48) and is positioned in the hollow groove (43) and the plugging core guide pipe (41); the tail end of the elastic belt (42) is provided with a fixing part (50), and one side fin of the fixing component (2) is provided with an attaching part which is matched with the fixing part (50) to fix the stretched elastic belt (42); the plugging core (44) is arranged in such a way that when the elastic belt (42) naturally retracts, the front end of the plugging core (44) just moves to the opening of the front end of the indwelling hose (13); and when the elastic band (42) is stretched to a maximum length, the front end of the plugging core (44) remains in the arc-shaped pipe section (412) of the plugging core conduit (41) and is located downstream of the sealing membrane (47); the fins of the fixing assembly (2) are made of flexible materials, one side of each fin is coated with glue, and the glued sides of the two fins are covered by the same rigid thin plate, so that the elastic band (42) is kept in a stretched state by the cooperation of the fixing part (50) and the attaching part when the fixing assembly is not used.
2. The sterile, anti-reflux needle for indwelling needle easy penetration as set forth in claim 1, wherein: the height of the transition ring (15) is 0.1-0.6 times of the height of the needle point of the puncture steel needle (31).
3. The sterile, anti-reflux needle for indwelling needle easy penetration as set forth in claim 1, wherein: the distal end of the hollow groove (43) is provided with a fixing structure (46) for fixing the tail end of the plugging core (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810882926.6A CN109011005B (en) | 2018-08-06 | 2018-08-06 | Sterile anti-reflux indwelling needle easy to puncture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810882926.6A CN109011005B (en) | 2018-08-06 | 2018-08-06 | Sterile anti-reflux indwelling needle easy to puncture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109011005A CN109011005A (en) | 2018-12-18 |
| CN109011005B true CN109011005B (en) | 2023-07-18 |
Family
ID=64648586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810882926.6A Active CN109011005B (en) | 2018-08-06 | 2018-08-06 | Sterile anti-reflux indwelling needle easy to puncture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109011005B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201510602U (en) * | 2009-08-17 | 2010-06-23 | 李华美 | Steel needle self-shrinking syringe tube with two-step shape-destroying inner core |
| CN202590066U (en) * | 2012-02-09 | 2012-12-12 | 张亚平 | Antithrombotic anticoagulant type safe indwelling needle |
| CN203749985U (en) * | 2014-01-03 | 2014-08-06 | 江苏省人民医院 | Anti-backflow ureter bracket tube |
| CN105107058A (en) * | 2015-09-22 | 2015-12-02 | 四川省人民医院 | Oval diversion safe indwelling needle |
| CN105771029A (en) * | 2016-04-29 | 2016-07-20 | 光玲 | Anti-reflux positive pressure device |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7037323B2 (en) * | 2001-11-08 | 2006-05-02 | Sub-Q, Inc. | Pledget-handling system and method for delivering hemostasis promoting material to a blood vessel puncture site by fluid pressure |
| CN101104094A (en) * | 2007-08-10 | 2008-01-16 | 张亚根 | Safety type artery and venous indwelling needle with airtight interface without needle |
| CN101239217A (en) * | 2007-08-10 | 2008-08-13 | 张亚根 | Safety type artery and vein indwelling needle with needleless closed positive pressure interface |
| WO2011066465A1 (en) * | 2009-11-25 | 2011-06-03 | Osseon Therapeutics, Inc. | Steerable and curvable vertebroplasty system with clog-resistant exit ports |
| CN201182826Y (en) * | 2007-12-10 | 2009-01-21 | 张亚根 | H type safe artery and vein lien needle with non-needle connector positive-pressure enclosed valve |
| WO2010022095A1 (en) * | 2008-08-20 | 2010-02-25 | Icu Medical, Inc. | Anti-reflux vial adaptors |
| CN201880124U (en) * | 2010-09-02 | 2011-06-29 | 陈尊孔 | Double safety vein indwelling needle |
| CN201880179U (en) * | 2010-09-05 | 2011-06-29 | 张国 | Double-safety retention needle |
| WO2012033906A2 (en) * | 2010-09-09 | 2012-03-15 | University Of Florida Research Foundation Inc. | Context-sensitive flow interrupter and drainage outflow optimization system |
| KR102481494B1 (en) * | 2011-12-22 | 2022-12-26 | 아이씨유 메디칼 인코퍼레이티드 | A medical fluid transfer system, a fluid transfer method, an electronic medical fluid transfer system, and a method of using an electronic medical fluid transfer system |
| CN103239774A (en) * | 2012-02-09 | 2013-08-14 | 张亚平 | Anti-thrombus anti-coagulation type safe remaining needle |
| CN103170036A (en) * | 2013-03-01 | 2013-06-26 | 张亚平 | Venous indwelling needle with sacculus valve |
| CN206492057U (en) * | 2016-09-22 | 2017-09-15 | 苏州鱼跃医疗科技有限公司 | Vein detaining needle for fluids infusion conduit elastic force protective case |
| CN107890595A (en) * | 2017-12-15 | 2018-04-10 | 西藏多欣医疗器械制造有限公司 | A kind of intravascular remaining needle of malleation liquid capsule self-sealing |
| CN209221184U (en) * | 2018-08-06 | 2019-08-09 | 江苏省人民医院（南京医科大学第一附属医院） | Easy-to-puncture sterile anti-backflow remaining needle |
-
2018
- 2018-08-06 CN CN201810882926.6A patent/CN109011005B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201510602U (en) * | 2009-08-17 | 2010-06-23 | 李华美 | Steel needle self-shrinking syringe tube with two-step shape-destroying inner core |
| CN202590066U (en) * | 2012-02-09 | 2012-12-12 | 张亚平 | Antithrombotic anticoagulant type safe indwelling needle |
| CN203749985U (en) * | 2014-01-03 | 2014-08-06 | 江苏省人民医院 | Anti-backflow ureter bracket tube |
| CN105107058A (en) * | 2015-09-22 | 2015-12-02 | 四川省人民医院 | Oval diversion safe indwelling needle |
| CN105771029A (en) * | 2016-04-29 | 2016-07-20 | 光玲 | Anti-reflux positive pressure device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109011005A (en) | 2018-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4670008A (en) | High flux threaded needle | |
| US3537451A (en) | Intravenous catheter unit with releasable inserter means | |
| US4333455A (en) | Injectable catheter and method of placing same | |
| CN205322448U (en) | Trocar is used in wicresoft's solid many lamellas of inner core opening internal fistula puncture | |
| CN108939206B (en) | Sterile anti-reflux indwelling needle easy to fix | |
| CN209221184U (en) | Easy-to-puncture sterile anti-backflow remaining needle | |
| WO2017042825A2 (en) | Intravenous catheter with a secured mechanism to avoid reverse flow of the blood | |
| CN200998511Y (en) | Transfusion tool of needles staying on vein | |
| CN109011005B (en) | Sterile anti-reflux indwelling needle easy to puncture | |
| CN209933656U (en) | Venous catheter device capable of being plugged | |
| CN201750897U (en) | Paracentesis tube-setting device | |
| CN115068741A (en) | Anti-reflux anti-needling retention needle | |
| CN214550618U (en) | Anti-drop PICC pipe | |
| CN209827912U (en) | Drainage catheter | |
| CN109481783B (en) | Safety venous indwelling needle | |
| CN219398502U (en) | Remaining needle for preventing blood from flowing reversely | |
| CN111905169A (en) | Y type is kept somewhere needle for dialysis | |
| CN209221183U (en) | Easily fixed aseptic anti-reflux remaining needle | |
| CN101912291A (en) | Puncture cannulation instrument | |
| CN215134836U (en) | Safety puncture-proof hose transfusion needle | |
| CN213312274U (en) | Arteriovenous indwelling needle sleeve for hemodialysis puncture | |
| CN218833277U (en) | Internal fistula puncture needle | |
| CN215305911U (en) | Blood sample taking needle | |
| CN215900575U (en) | Interventional artery drug administration indwelling needle | |
| CN220530449U (en) | Medical indwelling needle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |