CN115068741A - Anti-reflux anti-needling retention needle - Google Patents
Anti-reflux anti-needling retention needle Download PDFInfo
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- CN115068741A CN115068741A CN202210730117.XA CN202210730117A CN115068741A CN 115068741 A CN115068741 A CN 115068741A CN 202210730117 A CN202210730117 A CN 202210730117A CN 115068741 A CN115068741 A CN 115068741A
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- needle
- seat
- assembly
- catheter
- needle tube
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- 230000000151 anti-reflux effect Effects 0.000 title claims abstract description 17
- 230000014759 maintenance of location Effects 0.000 title description 3
- 238000001467 acupuncture Methods 0.000 claims abstract description 19
- 238000006073 displacement reaction Methods 0.000 claims abstract 2
- 239000012528 membrane Substances 0.000 claims description 18
- 208000012266 Needlestick injury Diseases 0.000 claims description 12
- 230000002265 prevention Effects 0.000 claims description 11
- 239000013013 elastic material Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 244000241796 Christia obcordata Species 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 9
- 239000003814 drug Substances 0.000 description 8
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 210000001124 body fluid Anatomy 0.000 description 2
- 239000010839 body fluid Substances 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 229940127219 anticoagulant drug Drugs 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
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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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards
-
- 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
- A61M2005/1583—Needle extractors
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Hematology (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Pulmonology (AREA)
- Environmental & Geological Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an anti-reflux anti-acupuncture indwelling needle, which comprises a needle tube assembly and a catheter assembly, wherein the needle tube assembly comprises a needle tube seat and a needle tube, the catheter assembly comprises a catheter seat and a catheter, the needle tube penetrates through the catheter, the needle tube assembly and the catheter assembly are detachably connected through a connecting assembly, the connecting assembly comprises a connecting seat and a connecting piece, the connecting seat is connected with the needle tube seat in an improved mode, the front end of the connecting seat is fixedly connected with the inner wall of the catheter seat through an elastic valve, and the axis of the elastic valve is provided with a retractable elastic opening; the connecting piece slides and sets up in the connecting seat, and the front end accessible axial displacement drive elasticity open-and-close of connecting piece, the coaxial built-in subassembly of preventing acupuncture that has of connecting piece. The needle tube assembly and the catheter assembly are connected through the connecting assembly, and the movable connecting piece in the connecting assembly is matched with the anti-acupuncture assembly, so that the action of pulling out the needle tube can simultaneously achieve the double functions of anti-reflux and anti-acupuncture, the use efficiency is improved, and the use safety is ensured.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an anti-reflux anti-needling indwelling needle.
Background
An indwelling needle is a common infusion tool in clinic at present and consists of a catheter component and a needle tube component. When in clinical use, the needle head protective cap is taken down, and the puncture needle carries the catheter to synchronously enter the vein of the human body. After the return of blood was observed, the venipuncture was confirmed to be successful, and the puncture needle was withdrawn, leaving only the soft catheter in the vein. The liquid medicine is input into a human body through the soft catheter, and the catheter is matched with the blood anticoagulant for use, so that the liquid medicine can be used for multiple times of transfusion in the safe retention time of the vein of the human body, and the pain of a patient caused by frequent puncture is avoided.
In practical use, when the indwelling puncture needle is pulled out, some mixed body fluid of blood, liquid medicine and the like is inevitably brought, and in the nursing of some special patients, the body fluid has the safety risk of infection transmission. In addition, the puncture needle is directly exposed after being pulled out, so that medical personnel or patients are easily punctured carelessly to cause secondary injury, and the puncture needle also has greater safety risk. Therefore, how to improve the safe use of the indwelling needle is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an anti-reflux and anti-needling indwelling needle.
The purpose of the invention is realized by the following technical scheme:
the anti-reflux anti-acupuncture indwelling needle comprises a needle tube component and a catheter component, wherein the needle tube component comprises a needle tube seat and a needle tube fixedly arranged at the front end of the needle tube seat, the catheter component comprises a catheter seat and a catheter fixedly arranged at the front end of the catheter seat, the needle tube penetrates through the catheter, the needle tube component and the catheter component are detachably connected through a connecting component, the connecting component comprises a connecting seat and a connecting piece, the connecting seat is fixedly arranged in the catheter seat, the needle tube seat is connected to the tail end of the connecting seat, the front end of the connecting seat is fixedly connected with the inner wall of the catheter seat through an elastic valve, and the axis of the elastic valve is provided with a retractable elastic opening; the connecting piece is arranged in the connecting seat in a sliding mode, the front end of the connecting piece can drive the elastic opening to be opened and closed through axial movement, a needle-prick preventing assembly is coaxially arranged in the connecting piece, the needle tube assembly is connected with the catheter assembly in an initial state, and the needle tube sequentially penetrates through the needle-prick preventing assembly, the connecting piece, the elastic opening and the catheter; and in a second state, the needle tube assembly and the catheter assembly are separated, the needle tip of the needle tube moves into the needle-prick prevention assembly, the needle-prick prevention assembly is separated from the connecting piece through backward movement, and meanwhile, the connecting piece is driven by the needle-prick prevention assembly to move backward and is separated from the elastic valve, so that the elastic opening is closed to seal the catheter seat.
Preferably, the elastic valve has an elastic membrane surface, the outer edge of the elastic membrane surface extends towards the axis of the elastic membrane surface to form a group of cuts, and the cuts intersect at the axis of the elastic valve to form the elastic opening.
Preferably, the outer edge of the elastic valve extends towards the axis of the elastic valve to form a group of extension arms connected with the elastic membrane surface, intervals are formed between every two ends of the extension arms, and the elastic membrane surface in each interval is provided with one notch.
Preferably, the connecting piece comprises a conical head with a hollow inner part and connecting arms respectively arranged on two sides of the conical head, a sliding groove matched with the connecting arms is formed in the inner wall of the connecting seat, and the connecting arms axially move in the sliding groove.
Preferably, the anti-acupuncture component is arranged between the two connecting arms, the tail end of the inner side surface of each connecting arm is provided with a stop block, and the stop block is abutted against the tail end of the anti-acupuncture component in the initial state; in the second state, the stop is separated from the anti-needle-stick assembly.
Preferably, the acupuncture assembly comprises a shell and an elastic sheet, a groove is formed in the shell, the elastic sheet comprises a first end and a second end which are connected through a straight middle part, the first end is bent and clamped at the tail end of the groove, the second end is bent to form a hook shape, a convex part is arranged on the outer wall of the needle tube, the tail end of the groove is provided with a through hole of which the diameter is smaller than that of the convex part, the length between the convex part and the needle point of the needle tube is smaller than the distance between the second end and the through hole, so that when the convex part abuts against the through hole, the second end is separated from the needle tube, the middle part is driven to abut against the inner wall of the groove to form a closed space, and the needle point of the needle tube is sealed in the closed space.
Preferably, the housing is made of an elastic material, the diameter of the housing is larger than the distance between the two stop blocks in a normal state, and the diameter of the housing is smaller than the distance between the two stop blocks after deformation.
Preferably, the outer wall of the tail end of the connecting seat is provided with a bayonet, the front end of the needle tube seat is provided with an insertion block matched with the bayonet, and the insertion block is inserted into the bayonet in the initial state.
Preferably, the outer wall of the needle tube seat is concave, and anti-skidding convex ridges are uniformly distributed on the outer wall of the concave.
Preferably, the two sides of the catheter holder are provided with butterfly wings, and a protective shell matched with the catheter holder is further sleeved outside the catheter holder.
The invention has the following beneficial effects:
1. the needle tube assembly and the catheter assembly are detachably connected by the connecting assembly, the movable connecting piece in the connecting assembly is matched with the needle-prick preventing assembly, so that a needle point is sealed by the needle-prick preventing assembly in the process of pulling out the needle tube, the aim of preventing the needle point of the needle tube from being exposed is achieved, meanwhile, the needle-prick preventing assembly is driven to drive the connecting piece to move backwards and separate from the elastic valve, the elastic valve seals an elastic opening of the axis of the elastic valve to seal the catheter seat, the aim of preventing liquid medicine from flowing backwards is achieved, the double functions of preventing backflow and preventing needle-prick are completed by the action of pulling out the needle tube, other steps are not needed, the use convenience and high efficiency are improved, the use safety is guaranteed, and the needle-prick preventing assembly is practical;
2. the surface of the elastic valve is provided with an extension arm which can enhance the resilience force of the elastic membrane surface and ensure the resilience sealing of the elastic opening of the axis after the needle tube is pulled out;
3. the shell in the anti-acupuncture component is made of elastic materials, so that the shell can be abutted against the stop blocks under a normal state to pull the connecting piece to move backwards, and can deform to be separated from the stop blocks after the tensile force is increased to finish separation;
4. the first end of the elastic sheet of the anti-acupuncture component is clamped in the shell through bending, so that the middle part of the elastic sheet has elastic force close to the axis of the shell, the second end is driven to abut against the shell after the needle point of the needle tube moves to the second end, the needle point of the needle tube is sealed, the needle point is prevented from being punctured for the second time, and the purpose of preventing acupuncture is achieved.
Drawings
The technical scheme of the invention is further explained by combining the accompanying drawings as follows:
FIG. 1: a schematic diagram of an embodiment of the invention;
FIG. 2: the embodiment of the invention has the figure of the protective shell removed;
FIG. 3: a cross-sectional view of an embodiment of the present invention at an initial state;
FIG. 4: a cross-sectional view of an embodiment of the invention in a second state;
FIG. 5: the schematic diagram of the anti-needling component in the embodiment of the invention is in an initial state;
FIG. 6: in the embodiment of the invention, the schematic diagram of the anti-needling assembly in the second state;
FIG. 7: a schematic view of an elastic valve in an embodiment of the invention;
FIG. 8: schematic illustration of an embodiment of the invention with the elastic valve lifted open.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art in light of these embodiments are intended to be within the scope of the present invention.
In the description of the schemes, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.
As shown in fig. 1 to 8, the present invention discloses an anti-reflux anti-acupuncture indwelling needle, comprising a needle tube assembly and a catheter assembly, wherein the needle tube assembly comprises a needle tube seat 1 and a needle tube 2 fixedly arranged at the front end of the needle tube seat 1, the catheter assembly comprises a catheter seat 3 and a catheter 4 fixedly arranged at the front end of the catheter seat 3, the needle tube 2 is arranged in the catheter 4 in a penetrating manner, the needle tube assembly and the catheter assembly are detachably connected through a connecting assembly, the connecting assembly comprises a connecting seat 5 and a connecting piece 6, the connecting seat 5 is fixedly arranged in the catheter seat 3, the needle tube seat 1 is connected to the tail end of the connecting seat 5, the front end of the connecting seat 5 is fixedly connected with the inner wall of the catheter seat 3 through an elastic valve 7, and the axis of the elastic valve 7 is provided with a retractable elastic opening 701; the connecting piece 6 is arranged in the connecting seat 5 in a sliding manner, the front end of the connecting piece 6 can drive the elastic opening 701 to be opened and closed through axial movement, a needle-prick preventing component is coaxially arranged in the connecting piece 6, the needle tube component and the catheter component are connected in an initial state, and the needle tube 2 sequentially penetrates through the needle-prick preventing component, the connecting piece 6, the elastic opening 701 and the catheter 4; in the second state, the needle tube assembly and the catheter assembly are separated, the needle tip of the needle tube 2 moves into the needle-prick prevention assembly, and the needle-prick prevention assembly is separated from the connecting piece 6 by moving backwards, and meanwhile, the connecting piece 6 is driven by the needle-prick prevention assembly to move backwards and is separated from the elastic valve 7, so that the elastic opening 701 is closed to seal the catheter seat 3.
According to the invention, the needle tube assembly and the catheter assembly are detachably connected by arranging the connecting assembly, and the movable connecting piece 6 in the connecting assembly is matched with the needle-prick preventing assembly, so that the needle point is sealed by the needle-prick preventing assembly on one hand in the process of pulling out the needle tube 2, and the purpose of preventing the needle point of the needle tube 2 from being exposed is achieved; meanwhile, on the other hand, the needle puncture preventing component is driven to drive the connecting piece 6 to move backwards to be separated from the elastic valve 7, so that the elastic valve 7 seals the elastic opening 701 at the axis to seal the catheter seat 3, the purpose of preventing liquid medicine from flowing backwards is achieved, the double purposes of preventing backflow and preventing needle puncture are achieved by the action of pulling out the needle tube, other steps are not needed, the use convenience and efficiency are improved, the use safety is guaranteed, and the sticking is practical.
Specifically, as shown in fig. 3, 7 and 8, the elastic valve 7 has an elastic membrane surface 702, and a set of slits are formed in the outer edge of the elastic membrane surface 702 extending toward the axis thereof, and the slits intersect at the axis of the elastic valve 7 to form the elastic opening 701. The arrangement of the cut enables the elastic opening 701 to be contracted to form a complete membrane surface when no force is applied to extrude the elastic opening so as to seal the catheter base 3 and avoid the liquid in the catheter base 3 from overflowing; when the liquid medicine is squeezed by an external force, the elastic opening 701 is recessed inwards to be opened, and the liquid medicine is input. The elastic membrane surface 702 is made of an elastic material, such as silica gel.
Furthermore, a group of extension arms 703 connected with the elastic membrane surface 701 extend from the outer edge of the elastic valve 7 to the axis, an interval is formed between every two ends of the extension arms 703, and one notch is formed on the elastic membrane surface 701 in each interval. In the preferred embodiment, the extension arm 703 is provided with three corresponding notches, and in other possible embodiments, the number of the extension arms 703 and the number of the notches correspond, and the specific number depends on the actual diameter of the elastic valve 7. The arrangement of the extension arm 702 can enhance the resilience of the elastic membrane surface 701, and ensure that the elastic opening 701 of the axis can rebound in time to be closed after the needle tube 2 is pulled out.
As shown in fig. 3, the connecting member 6 includes a hollow conical head 601 and connecting arms 602 respectively disposed at two sides of the conical head 601, a sliding slot 501 is disposed on an inner wall of the connecting seat 5 and is matched with the connecting arms 602, and the connecting arms 602 axially move in the sliding slot 501. The conical structure of the conical head 601 can reduce the contact area between the conical head and the elastic valve 7 to open the elastic opening 701, and the conical inner wall can limit the anti-needle-prick component or other connectors connected with the conical head.
Further, the anti-acupuncture component is arranged between the two connecting arms 602, a stop block 603 is arranged at the tail end of the inner side surface of each connecting arm 602, and in the initial state, the stop block 603 abuts against the tail end of the anti-acupuncture component; in the second state, the stop 603 is disengaged from the anti-needle stick assembly. The stopper 603 is arranged so that the backward movement of the needle-prick prevention assembly can drive the connecting piece 6 to move backward synchronously to separate the connecting piece 6 from the elastic valve 7 in time, and after the needle tube 2 exits, the elastic opening 701 can be immediately contracted and closed to seal the catheter holder 3, thereby preventing the liquid medicine or blood from overflowing or flowing backwards along with the needle tube 2. In addition, as shown in fig. 8, when the catheter 4 is used after being inserted into a human body, the connection holder 5 is connected to a luer connector which abuts against the stopper 603 to drive the connector 6 to move forward and push the elastic opening 701 open for infusion.
Specifically, as shown in fig. 3 to 6, the anti-acupuncture component includes a housing 8 and an elastic sheet 9, a groove 801 is formed in the housing 8, the elastic sheet 9 includes a first end 901 and a second end 902 connected by a straight middle portion 903, the first end 901 is bent and clamped at a tail end of the groove 801, and the second end 902 is bent to form a hook shape. The arrangement is such that the intermediate portion 903 has a spring force that approaches the axis of the housing 8 to drive the second end 902 into abutment with the groove 801 after the needle tip of the needle cannula 2 has moved into the second end 902.
The outer wall of needle tubing 2 is provided with a convex part 201, the tail end of recess 801 has the diameter and is less than the perforation of convex part 201, just convex part 201 with length between the needle point of needle tubing 2 is less than second end 902 with the distance between the perforation, so that when convex part 201 with when the perforation butt, second end 902 with needle tubing 2 separates, and under the drive of intermediate part 903 with the inner wall butt of recess 801 forms enclosure 100, the needle point of needle tubing 2 is sealed in enclosure 100. The structure enables the needle tube 2 to be positioned in the closed space 100, and the convex part 201 can drive the anti-acupuncture component to move synchronously along with the needle tube 2 after being abutted with the perforation.
In order to further improve the degree of adaptation between the second end 902 and the housing 8, the front end of the groove 801 is further recessed, the second end 902 abuts against the recessed part of the groove 801, the needle tube 2 is attached to the inner wall of the groove 801, and after the second end 902 abuts against the groove 801, the needle tip of the needle tube 2 can be effectively prevented from being pierced out again, and the second end 902 can be located in the groove 801 as much as possible and does not protrude outwards from the housing 8, so that the whole needle-prick prevention assembly can be conveniently pulled out subsequently.
The housing 8 is made of an elastic material, such as silicone rubber. The elastic material enables the diameter of the shell 8 to be larger than the distance between the two stop blocks 603 in a normal state, so as to be abutted against the stop blocks 603 and drive the connecting piece 6 to move backwards synchronously; after the housing 8 further receives the backward pulling force, it deforms, and the diameter of the deformed housing is smaller than the distance between the two stoppers 603, so as to be released from the connecting member 6, and the separation from the connecting member 6 is completed.
As shown in fig. 1 and 2, the outer wall of the tail end of the connecting seat 5 is provided with a bayonet 502, the front end of the needle tube seat 1 is provided with an insertion block 101 matched with the bayonet 502, and in the initial state, the insertion block 101 is inserted into the bayonet 502. So that the connection between the connection seat 5 and the needle tube seat 1 is effective and the needle tube seat 1 is prevented from rotating relative to the connection seat 5.
The outer wall of the needle tube seat 1 is concave, and the outer wall of the concave is evenly provided with the anti-slip protruding ridges 102, so that the needle tube seat can be held and pull force can be applied conveniently and fast to use.
The two sides of the catheter holder 3 are provided with the butterfly wings 301 to increase the contact area between the catheter holder and the skin of a patient, leave a pasting space for the pasting adhesive tape, improve the adaptability between the catheter holder 3 and the patient and reduce the rotation of the catheter holder 3.
The outer part of the catheter seat 3 is also sleeved with a matched protective shell 10 to ensure the integrity and cleanness of the indwelling needle before use.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. Prevent against current needle thorn indwelling needle, including needle tubing subassembly and tubing subassembly, the needle tubing subassembly include needle tube seat (1) and set firmly in needle tubing (2) of needle tube seat (1) front end, the tubing subassembly include pipe seat (3) and set firmly in pipe (4) of pipe seat (3) front end, needle tubing (2) are worn to locate in pipe (4), its characterized in that: the needle tube assembly and the catheter assembly are detachably connected through a connecting assembly, the connecting assembly comprises a connecting seat (5) and a connecting piece (6), the connecting seat (5) is fixedly arranged in the catheter seat (3), the needle tube seat (1) is connected to the tail end of the connecting seat (5), the front end of the connecting seat (5) is fixedly connected with the inner wall of the catheter seat (3) through an elastic valve (7), and the axis of the elastic valve (7) is provided with a retractable elastic opening (701); the connecting piece (6) is arranged in the connecting seat (5) in a sliding mode, the front end of the connecting piece (6) can drive the elastic opening (701) to be opened and closed through axial movement, a needle puncture preventing assembly is coaxially arranged in the connecting piece (6), the needle tube assembly and the catheter assembly are connected in an initial state, and the needle tube (2) sequentially penetrates through the needle puncture preventing assembly, the connecting piece (6), the elastic opening (701) and the catheter (4); in a second state, the needle tube assembly and the catheter assembly are separated, the needle tip of the needle tube (2) moves into the needle-prick prevention assembly, the needle-prick prevention assembly is separated from the connecting piece (6) through backward movement, and meanwhile, the connecting piece (6) is driven by the needle-prick prevention assembly to move backward and is separated from the elastic valve (7), so that the elastic opening (701) is closed to seal the catheter seat (3).
2. The anti-reflux anti-needle-stick indwelling needle of claim 1, wherein: the elastic valve (7) is provided with an elastic membrane surface (702), the outer edge of the elastic membrane surface (702) extends towards the axis of the elastic membrane surface to form a group of notches, and the notches are intersected at the axis of the elastic valve (7) to form the elastic opening (701).
3. The anti-reflux anti-needle-stick indwelling needle of claim 2, wherein: the outer edge of the elastic valve (7) extends towards the axis of the elastic valve to form a group of extension arms (703) connected with the elastic membrane surface (701), intervals are formed between every two ends of the extension arms (703), and a notch is formed in the elastic membrane surface (701) in each interval.
4. The anti-reflux anti-needle-stick indwelling needle of claim 1, wherein: connecting piece (6) include one inside hollow toper head (601) and locate separately linking arm (602) of toper head (601) both sides, be provided with on the inner wall of connecting seat (5) with linking arm (602) assorted spout (501), linking arm (602) are in do axial displacement in spout (501).
5. The anti-reflux anti-needle-stick indwelling needle of claim 4, wherein: the anti-acupuncture component is arranged between the two connecting arms (602), the tail end of the inner side face of each connecting arm (602) is provided with a stop block (603), and in the initial state, the stop block (603) is abutted against the tail end of the anti-acupuncture component; in the second state, the stop (603) is separated from the anti-needle stick assembly.
6. The anti-reflux anti-needle-stick indwelling needle of claim 5, wherein: the acupuncture-resistant assembly comprises a shell (8) and an elastic sheet (9), wherein a groove (801) is formed in the shell (8), the elastic sheet (9) comprises a first end (901) and a second end (902) which are connected through a straight middle part (903), the first end (901) is bent and clamped at the tail end of the groove (801), the second end (902) is bent to form a hook shape, a convex part (201) is arranged on the outer wall of the needle tube (2), the tail end of the groove (801) is provided with a through hole with the diameter smaller than that of the convex part (201), the length between the convex part (201) and the needle point of the needle tube (2) is smaller than the distance between the second end (902) and the through hole, so that when the convex part (201) abuts against the through hole, the second end (902) is separated from the needle tube (2), and abuts against the inner wall of the groove (801) to form a closed space (100) under the driving of the middle part (903), the needle tip of the needle tube (2) is sealed in the sealed space (100).
7. The anti-reflux anti-needle-stick indwelling needle of claim 6, wherein: the shell (8) is made of elastic materials, the diameter of the shell is larger than the distance between the two stop blocks (603) in a normal state, and the diameter of the shell is smaller than the distance between the two stop blocks (603) after deformation.
8. The anti-reflux anti-needle-stick indwelling needle of claim 1, wherein: the outer wall of the tail end of the connecting seat (5) is provided with a bayonet (502), the front end of the needle tube seat (1) is provided with an inserting block (101) matched with the bayonet (502), and in the initial state, the inserting block (101) is inserted into the bayonet (502).
9. The anti-reflux anti-needle-stick indwelling needle of claim 8, wherein: the outer wall of the needle tube seat (1) is concave, and anti-skidding convex ridges (102) are uniformly distributed on the outer wall of the concave.
10. The anti-reflux anti-needle-stick indwelling needle of claim 1, wherein: the two sides of the catheter seat (3) are provided with butterfly wings (301), and a protective shell (10) matched with the catheter seat is further sleeved outside the catheter seat (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210730117.XA CN115068741B (en) | 2022-06-24 | 2022-06-24 | Anti-backflow anti-needling indwelling needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210730117.XA CN115068741B (en) | 2022-06-24 | 2022-06-24 | Anti-backflow anti-needling indwelling needle |
Publications (2)
| Publication Number | Publication Date |
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| CN115068741A true CN115068741A (en) | 2022-09-20 |
| CN115068741B CN115068741B (en) | 2024-01-12 |
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| CN202210730117.XA Active CN115068741B (en) | 2022-06-24 | 2022-06-24 | Anti-backflow anti-needling indwelling needle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116899047A (en) * | 2023-08-04 | 2023-10-20 | 江苏采纳医疗科技有限公司 | Remaining needle |
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| CN201257220Y (en) * | 2008-08-28 | 2009-06-17 | 江西三鑫医疗器械集团有限公司 | Back flow prevention retention needle |
| CN103285450A (en) * | 2013-03-25 | 2013-09-11 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| WO2017051801A1 (en) * | 2015-09-24 | 2017-03-30 | テルモ株式会社 | Catheter assembly |
| WO2020111485A1 (en) * | 2018-11-26 | 2020-06-04 | (주)메디퍼스트 | Catheter hub and catheter for preventing blood backflow |
| WO2022027261A1 (en) * | 2020-08-05 | 2022-02-10 | 江苏采纳医疗科技有限公司 | Anti-backflow indwelling needle |
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2022
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201257220Y (en) * | 2008-08-28 | 2009-06-17 | 江西三鑫医疗器械集团有限公司 | Back flow prevention retention needle |
| CN103285450A (en) * | 2013-03-25 | 2013-09-11 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| WO2017051801A1 (en) * | 2015-09-24 | 2017-03-30 | テルモ株式会社 | Catheter assembly |
| WO2020111485A1 (en) * | 2018-11-26 | 2020-06-04 | (주)메디퍼스트 | Catheter hub and catheter for preventing blood backflow |
| WO2022027261A1 (en) * | 2020-08-05 | 2022-02-10 | 江苏采纳医疗科技有限公司 | Anti-backflow indwelling needle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116899047A (en) * | 2023-08-04 | 2023-10-20 | 江苏采纳医疗科技有限公司 | Remaining needle |
| CN116899047B (en) * | 2023-08-04 | 2024-04-26 | 江苏采纳医疗科技有限公司 | Remaining needle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115068741B (en) | 2024-01-12 |
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