CN114870157B - Infusion device and use method - Google Patents
Infusion device and use method Download PDFInfo
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- CN114870157B CN114870157B CN202210575360.9A CN202210575360A CN114870157B CN 114870157 B CN114870157 B CN 114870157B CN 202210575360 A CN202210575360 A CN 202210575360A CN 114870157 B CN114870157 B CN 114870157B
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- finger
- protective cylinder
- limit position
- base
- inner protective
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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
- 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
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- 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
Abstract
The invention discloses an infusion device and a use method thereof, wherein the infusion device comprises: an infusion port assembly comprising an injection seat, a puncture diaphragm and a catheter; the non-invasive needle assembly comprises a non-invasive needle body, a finger pressure button, an infusion extension tube, a base, an inner protective cylinder and a compression spring, wherein the inner protective cylinder is arranged on the base, an avoidance hole communicated with the inside of the inner protective cylinder is formed in the base, an extension part inserted into the inside of the inner protective cylinder is arranged on the finger pressure button, an anti-disengaging structure and an unlocking locking structure are arranged between the extension part and the inner protective cylinder, the compression spring is arranged between the finger pressure button and the base, the finger pressure button can be limited to move through the locking structure after the puncture operation is completed by pressing the finger pressure button, and the compression spring can drive the finger pressure button to move when the locking structure is unlocked so that the head of the non-invasive needle body is contracted inside the inner protective cylinder; the magnetic structure is arranged between the injection seat and the base. The infusion device is beneficial to reducing the difficulty of puncture operation and preventing medical staff from being stabbed when the atraumatic needle is pulled out.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to an infusion device and a use method thereof.
Background
In the prior art, the transfusion port is a transfusion device which is placed in a human body for a long time in a subcutaneous implantation mode, and can be matched with a nondestructive needle in clinic to perform medical actions such as drug infusion, fluid infusion, nutrition support, blood transfusion, blood sampling and the like, wherein when the medical actions are performed, a medical staff is required to fix the transfusion port by one hand, the other hand pierces the skin of a patient and pierces the transfusion port by the nondestructive needle, and the transfusion port has certain mobility, so that the difficulty of piercing operation is higher, the piercing operation is easy to be repeated due to piercing failure, larger psychological pressure is brought to the medical staff and the patient, in addition, when the nondestructive needle is pulled out, the non-invasive needle is required to be fixed by one hand of the medical staff, the hand for fixing the transfusion is easy to be pierced by the medical staff in the process, the occupational exposure of the medical staff is caused, and the physical and mental harm is caused to the medical staff.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the infusion device which is beneficial to reducing the difficulty of puncture operation and preventing medical staff from being stabbed when the atraumatic needle is pulled out.
The invention also provides a use method applied to the infusion device.
An infusion device in accordance with an embodiment of the first aspect of the invention includes: the infusion port assembly comprises an injection seat, a puncture diaphragm and a catheter, wherein a liquid storage groove with an opening at the top is arranged in the injection seat, the puncture diaphragm is arranged at the opening at the top of the liquid storage groove, and the catheter is connected to the side part of the injection seat and is communicated with the liquid storage groove; the non-invasive needle assembly comprises a non-invasive needle body, a finger pressure button, an infusion extension tube, a base, an inner protective cylinder and a compression spring, wherein the finger pressure button is arranged on the non-invasive needle body, the infusion extension tube is connected to the tail of the non-invasive needle body, the inner protective cylinder is of a top opening structure, the inner protective cylinder is arranged on the base and is used for accommodating the head of the non-invasive needle body, the head of the base corresponding to the non-invasive needle body is provided with an avoidance hole communicated with the interior of the inner protective cylinder, the finger pressure button is provided with an extension part extending downwards, the extension part is inserted into the interior of the inner protective cylinder and can move up and down relative to the interior of the inner protective cylinder, an anti-disengaging structure is arranged between the extension part and the inner protective cylinder, so that the finger pressure button has a first limit position, when the finger pressure button moves to a first limit position, the head of the non-invasive needle body is contracted into the interior of the inner protective cylinder, the extension part corresponds to the head of the non-invasive needle body, the finger pressure button is provided with a locking structure between the extension part and the inner protective cylinder and the second limit position, and the compression spring can be extended to the limit position when the finger pressure button is moved to the second limit position, and the compression structure can be locked by the second limit position, and the compression structure can be extended from the position between the finger pressure button and the limit position and the second limit position. The magnetic attraction structure is arranged between the injection seat and the base.
The infusion device provided by the embodiment of the invention has at least the following beneficial effects: when the magnetic type needle is used, the base is firstly adsorbed on the injection seat through the magnetic structure, then the injection seat is fixed by one hand, the finger-pressure button is pressed by the other hand so that the finger-pressure button moves from a first limit position to a second limit position, the head of the nondestructive needle body extends out of the inner protective cylinder through the avoidance hole and sequentially pierces the skin of a patient and the puncture diaphragm, meanwhile, the finger-pressure button is locked at the second limit position through the locking structure, and then related medical actions can be carried out; after the infusion device is used up, one hand is used for fixing the injection seat, the other hand is used for unlocking the locking structure, so that the finger-pressure button is driven by the compression spring to move to a first limit position from a second limit position, the base and the injection seat are separated finally, the infusion device is beneficial to reducing the difficulty of the puncture operation by assisting medical staff in puncture operation through arranging the magnetic attraction structure between the injection seat and the base, and meanwhile, the compression spring assists the medical staff to pull out an atraumatic needle and protect the inner protective sleeve, so that the medical staff is prevented from being stabbed when pulling out the atraumatic needle.
According to some embodiments of the invention, the anti-falling structure comprises a limiting protrusion arranged on the extension part, the locking structure comprises an elastic buckle arranged on the extension part and positioned right above the limiting protrusion, a first avoiding opening is formed on the extension part corresponding to the elastic buckle, so that the elastic buckle can be folded inwards when being stressed, a rectangular through hole is formed on the inner casing corresponding to the limiting protrusion and the elastic buckle, at least part of the limiting protrusion is positioned in the rectangular through hole, when the finger-pressure button moves to a first limit position, the limiting protrusion abuts against the wall of the rectangular through hole to limit the extension part to be separated from the inner casing, and when the finger-pressure button moves to a second limit position, the elastic buckle is clamped in the rectangular through hole and abuts against the wall of the rectangular through hole under the driving of the compression spring, so that the finger-pressure button is locked at the second limit position.
According to some embodiments of the invention, the elastic buckle is provided with a first guiding inclined plane, and the limit projection is provided with a second guiding inclined plane.
According to some embodiments of the invention, an outer casing is arranged on the base, the outer casing is sleeved outside the inner casing, an elastic force application part is arranged on the outer casing corresponding to the rectangular through hole, a second avoiding opening is arranged on the outer casing corresponding to the elastic force application part, so that the elastic force application part can be folded inwards when being stressed, and an abutting part for driving the elastic buckle to be separated from the rectangular through hole is arranged on the elastic force application part.
According to some embodiments of the invention, the magnetic attraction structure comprises a magnet and a metal piece capable of attracting with the magnet, wherein one of the magnet and the metal piece is arranged on the injection seat, and the other of the magnet and the metal piece is arranged on the base.
According to some embodiments of the invention, the bottom of the base is provided with an adhesive structure, the adhesive structure comprises a flexible substrate layer arranged at the bottom of the base, the area of the flexible substrate layer is larger than that of the bottom of the base, the bottom of the flexible substrate layer is provided with an adhesive layer, the bottom of the adhesive layer is provided with a strippable protective layer, and the middle part of the protective layer is provided with a first fracture.
According to some embodiments of the invention, the edges of the portions of the protective layer located on both sides of the first fracture are provided with protruding tear portions.
According to some embodiments of the invention, the top of the flexible substrate layer is provided with a peelable rigid annular rim corresponding to the edge of the flexible substrate layer.
According to some embodiments of the invention, the hard annular frame is provided with a second fracture.
The use method according to the embodiment of the second aspect of the present invention is applied to the infusion device according to the embodiment of the first aspect of the present invention, and includes the following steps:
sterilizing the skin of the patient where the transfusion port assembly is embedded;
finding out the position of the injection seat, and adsorbing the base on the injection seat through the magnetic structure;
one hand is used for fixing the injection seat, the other hand is used for pressing the finger-pressing button to enable the finger-pressing button to move from a first limit position to a second limit position, so that the head of the nondestructive needle body extends out of the inner protective cylinder through the avoiding hole and sequentially pierces the skin of a patient and the puncture diaphragm, and meanwhile, the finger-pressing button is locked at the second limit position through the locking structure;
confirming whether puncture is successful or not by means of blood drawing;
peeling the protective layer after successful puncture is confirmed, and then adhering the flexible substrate layer to the skin of a patient through the adhesive layer to fix the atraumatic needle assembly;
one of medical actions such as drug infusion, fluid infusion, nutrition support, blood transfusion, blood sampling and the like is carried out;
after the medical action is finished, one hand fixes the injection seat, and the other hand unlocks the locking structure so that the finger-pressure button moves from the second limit position to the first limit position under the drive of the compression spring;
the flexible substrate layer is peeled from the patient's skin and the base and the injection seat are separated.
The application method of the embodiment of the invention has at least the following beneficial effects: when the infusion device is applied to the infusion device, the difficulty of puncture operation is reduced, and the medical staff is prevented from being punctured when the atraumatic needle is pulled out.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of an infusion device according to an embodiment of the present invention when a finger button is moved to a first limit position;
FIG. 2 is a schematic cross-sectional view of the structure shown in FIG. 1;
FIG. 3 is an enlarged schematic view of a portion of FIG. 2 at A;
FIG. 4 is a schematic view of the infusion device when the finger push button is moved to the second limit position according to the embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of the structure shown in FIG. 4;
FIG. 6 is an exploded view of an infusion device in accordance with an embodiment of the disclosures made herein;
FIG. 7 is an enlarged schematic view of a portion of FIG. 6 at B;
FIG. 8 is an enlarged schematic view of a portion of FIG. 6 at C;
fig. 9 is a partially enlarged schematic view at D in fig. 6.
Reference numerals:
the infusion port assembly 100, the injection seat 110, the puncture septum 120, the catheter 130, the reservoir 140, the metal piece 150, the atraumatic needle assembly 200, the atraumatic needle body 210, the finger button 220, the extension 221, the limit protrusion 222, the elastic buckle 223, the first relief port 224, the first guide slope 225, the second guide slope 226, the infusion extension 230, the base 240, the relief port 241, the inner shield 250, the rectangular through hole 251, the compression spring 260, the outer shield 270, the elastic force applying part 271, the second relief port 272, the abutment 273, the magnet 280, the adhesive structure 290, the flexible base layer 291, the protective layer 292, the tear 293, the hard annular rim 294, and the second fracture 295.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that if an orientation or positional relationship such as upper, lower, front, rear, left, right, etc. is referred to in the description of the present invention, it is merely for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, if a number, greater than, less than, exceeding, above, below, within, etc., words are present, wherein the meaning of a number is one or more, and the meaning of a number is two or more, greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number.
In the description of the present invention, the words first, second, etc. are used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 5, an infusion device according to an embodiment of the present invention includes an infusion port assembly 100, a atraumatic needle assembly 200, and a magnetic attraction structure.
The transfusion port assembly 100 is used for being buried under the skin, the transfusion port assembly 100 comprises an injection seat 110, a puncture diaphragm 120 and a catheter 130, specifically, the puncture diaphragm 120 is a silica gel diaphragm, a liquid storage tank 140 with an open top is arranged in the injection seat 110, the puncture diaphragm 120 is arranged at the open top of the liquid storage tank 140, one end of the catheter 130 is connected with the side part of the injection seat 110 and is communicated with the liquid storage tank 140, the other end of the catheter 130 is used for being inserted into a blood vessel, the non-invasive needle assembly 200 comprises a non-invasive needle 210, a finger-pressing button 220, a transfusion extension tube 230, a base 240, an inner protective tube 250 and a compression spring 260, the finger-pressing button 220 is arranged on the non-invasive needle 210, the transfusion extension tube 230 is connected with the tail part of the non-invasive needle 210, the inner protective tube 250 is in an open top structure, the inner protective tube 250 is arranged on the base 240 and is used for accommodating the head part of the non-invasive needle 210, the base 240 is provided with a corresponding avoidance hole 241 communicated with the interior of the inner casing 250, the finger press button 220 is provided with a downward extending extension 221, the extension 221 is inserted into the interior of the inner casing 250 and can move up and down relative to the inner casing 250, an anti-drop structure is arranged between the extension 221 and the inner casing 250, so that the finger press button 220 has a first limit position, when the finger press button 220 moves to the first limit position, the head of the non-invasive needle 210 is contracted into the interior of the inner casing 250, an unlocking locking structure is arranged between the extension 221 and the inner casing 250, so that the finger press button 220 has a second limit position, when the finger press button 220 moves to the second limit position, the head of the non-invasive needle 210 extends out of the inner casing 250 from the avoidance hole 241, the locking structure can lock the finger press button 220 at the second limit position, the compression spring 260 is arranged between the finger press button 220 and the base 240, specifically, the compression spring 260 is disposed inside the inner casing 250 and sleeved on the atraumatic needle 210, one end of the compression spring 260 is abutted against the finger-pressing button 220, the other end of the compression spring 260 is abutted against the base 240, the compression spring 260 can drive the finger-pressing button 220 to move from the second limit position to the first limit position when unlocking the locking structure, and the magnetic attraction structure is disposed between the injection seat 110 and the base 240.
When in use, the base 240 is firstly adsorbed on the injection seat 110 through the magnetic attraction structure, then the injection seat 110 is fixed by one hand, the finger-pressing button 220 is pressed by the other hand, so that the finger-pressing button 220 moves from the first limit position to the second limit position, the head of the atraumatic needle 210 extends out of the inner protective cylinder 250 from the avoidance hole 241 and sequentially pierces the skin of a patient and the puncture membrane 120, meanwhile, the finger-pressing button 220 is locked at the second limit position through the locking structure, and then related medical actions can be carried out; after the infusion set is used, the injection seat 110 is fixed by one hand, the locking structure is unlocked by the other hand, so that the finger-pressure button 220 is driven by the compression spring 260 to move to the first limit position by the second limit position, and finally the base 240 and the injection seat 110 are separated, and the infusion set is beneficial to reducing the difficulty of the puncture operation by assisting medical staff by arranging the magnetic attraction structure between the injection seat 110 and the base 240 and simultaneously assisting the medical staff in pulling out the atraumatic needle and protecting the atraumatic needle through the inner protective cylinder 250, so that the medical staff is prevented from being stabbed when pulling out the atraumatic needle.
Referring to fig. 2, 5 and 6 and 7, in some embodiments, the anti-disengaging structure includes a limiting protrusion 222 disposed on the extension 221, the locking structure includes an elastic buckle 223 disposed on the extension 221 and located right above the limiting protrusion 222, and a first avoiding opening 224 is disposed on the extension 221 corresponding to the elastic buckle 223, so that the elastic buckle 223 can be folded inwards when being stressed, a rectangular through hole 251 is disposed on the inner casing 250 corresponding to the limiting protrusion 222 and the elastic buckle 223, at least a part of the limiting protrusion 222 is located in the rectangular through hole 251, when the finger press button 220 moves to the first limit position, the limiting protrusion 222 abuts against the wall of the rectangular through hole 251 to limit the extension 221 to disengage from the inner casing 250, and when the finger press button 220 moves to the second limit position, the elastic buckle 223 is clamped into the rectangular through hole 251 and abuts against the wall of the rectangular through hole 251 under the driving of the compression spring 260, so as to lock the finger press button 220 at the second limit position. When the puncture operation is performed, the injection seat 110 is fixed by one hand, the finger-pressing button 220 is pressed by the other hand, so that the finger-pressing button 220 moves to the second limit position, at this time, the elastic buckle 223 is clamped into the rectangular through hole 251 and is abutted against the hole wall of the rectangular through hole 251 under the driving of the compression spring 260, so that the finger-pressing button 220 is locked at the second limit position, when the atraumatic needle is removed, the injection seat 110 is fixed by one hand, the other hand applies force to the elastic buckle 223, so that the elastic buckle 223 is separated from the rectangular through hole 251, at this time, the finger-pressing button 220 moves to the first limit position under the driving of the compression spring 260, and at the same time, the limit protrusion 222 is abutted against the hole wall of the rectangular through hole 251 so as to limit the extension part 221 to separate from the inner protection barrel 250.
In other embodiments, the inner casing may be provided with rectangular through holes corresponding to the limiting protrusions and the elastic buckles, and the limiting protrusions and the elastic buckles may be arranged in a staggered manner.
Referring to fig. 7, in some embodiments, a first guiding ramp 225 is provided on the resilient catch 223 and a second guiding ramp 226 is provided on the limit projection 222 to facilitate insertion of the extension 221 into the inner casing 250.
Referring to fig. 1, 2, 4, 5, and 6 and 8, in some embodiments, an outer casing 270 is disposed on the base 240, the outer casing 270 is disposed outside the inner casing 250, an elastic force applying portion 271 is disposed on the outer casing 270 corresponding to the rectangular through hole 251, and a second avoidance opening 272 is disposed on the outer casing 270 corresponding to the elastic force applying portion 271, so that the elastic force applying portion 271 can be retracted inwards when being stressed, and an abutting portion 273 for driving the elastic buckle 223 to separate from the rectangular through hole 251 is disposed on the elastic force applying portion 271. When the atraumatic needle is pulled out, the fingers of the medical staff do not need to extend into the rectangular through hole 251 to apply force to the elastic buckle 223, and the medical staff can drive the abutting part 273 to drive the elastic buckle 223 to separate from the rectangular through hole 251 only by applying force to the elastic force applying part 271 through the fingers, so that the contact of the fingers of the medical staff with the atraumatic needle body 210 is avoided.
Referring to fig. 2, 5 and 6, in some embodiments, the magnetic attraction structure includes a magnet 280 and a metal member 150 capable of attracting the magnet 280, the magnet 280 is disposed on the base 240, and the metal member 150 is disposed on the injection seat 110. Specifically, the magnet 280 is annular, the magnet 280 is disposed inside the outer casing 270 and sleeved outside the inner casing 250, the corresponding metal piece 150 is annular, and the metal piece 150 is embedded inside the injection seat 110, however, the magnet may also be block-shaped, the corresponding number of magnets is a plurality, the plurality of magnets are distributed in an annular array, wherein the metal piece may also be block-shaped, the corresponding number of metal pieces is a plurality, and the plurality of metal pieces are distributed in an annular array, which is not limited herein.
In other embodiments, the metal member is disposed on the base, and the magnet is disposed on the injection seat, which is not limited herein.
Referring to fig. 1-6, in some embodiments, an adhesive structure 290 is disposed at the bottom of the base 240, the adhesive structure 290 includes a flexible substrate layer 291 disposed at the bottom of the base 240, the area of the flexible substrate layer 291 is larger than the area of the bottom of the base 240, an adhesive layer (not shown in the drawings) is disposed at the bottom of the flexible substrate layer 291, a peelable protective layer 292 is disposed at the bottom of the adhesive layer, and a first fracture (not shown in the drawings) is disposed in the middle of the protective layer 292, so as to facilitate peeling the protective layer 292, and the atraumatic needle assembly 200 can be fixed on the skin of a patient through the adhesive structure 290 after the puncturing operation is completed, so as to be beneficial for preventing the atraumatic needle 210 from being separated from the injection seat 110 due to external factors such as vibration or collision. Specifically, flexible substrate layer 291 is a transparent film structure, and protective layer 292 is a release paper, although the flexible substrate layer may be a nonwoven fabric or other flexible structure, and the protective layer may be a release paper or other peelable structure, which is not limited herein.
In some embodiments, the bonding structure 290 may be provided with a hole for avoiding the head of the atraumatic needle 210, however, the bonding structure may not be provided with a hole for avoiding the head of the atraumatic needle, and the head of the atraumatic needle may be driven to pierce the bonding structure during the puncturing operation, which is not limited herein.
Referring to fig. 1-6, in some embodiments, the edges of the portions of the protective layer 292 on both sides of the first fracture are provided with protruding tear portions 293 to facilitate peeling of the protective layer 292.
Referring to fig. 1-6, in some embodiments, the top of flexible substrate layer 291 is provided with a peelable rigid annular rim 294 corresponding to the edge of flexible substrate layer 291, and rigid annular rim 294 facilitates prevention of edge curling of flexible substrate layer 291 and reduces handling difficulties when flexible substrate layer 291 is adhered to the skin of a patient by an adhesive layer. Specifically, the rigid annular frame 294 may be a plastic structure, a metal structure, or other rigid structures, which are not limited herein.
Referring to fig. 9, in some embodiments, the second fracture 295 is provided on the rigid annular rim 294, and the rigid annular rim 294 is separated from the atraumatic needle assembly 200 without moving the rigid annular rim 294 to the end of the infusion extension tube 230 remote from the injection site 110 when the rigid annular rim 294 is no longer blocked by the infusion extension tube 230.
The application method of the embodiment of the invention is applied to the infusion device, and comprises the following steps of: sterilizing the skin of the patient with the port assembly 100; finding out the position of the injection seat 110, and adsorbing the base 240 on the injection seat 110 through a magnetic attraction structure; one hand fixes the injection seat 110, and the other hand presses the finger press button 220 to move the finger press button 220 from the first limit position to the second limit position, so that the head of the atraumatic needle 210 extends out of the inner casing 250 from the avoidance hole 241 and sequentially pierces the skin of a patient and the piercing septum 120, and simultaneously, the finger press button 220 is locked at the second limit position by the locking structure; confirming whether puncture is successful or not by means of blood drawing; after successful penetration is confirmed, protective layer 292 is peeled back and then flexible substrate layer 291 is adhered to the patient's skin by an adhesive layer to secure atraumatic needle assembly 200; peeling off the hard annular frame 294; one of medical actions such as drug infusion, fluid infusion, nutrition support, blood transfusion, blood sampling and the like is carried out; after the above-mentioned medical actions are completed, one hand fixes the injection seat 110, and the other hand unlocks the locking structure so that the finger-pressure button 220 moves from the second limit position to the first limit position under the driving of the compression spring 260; flexible substrate layer 291 is peeled from the patient's skin and base 240 and injection site 110 are separated.
When the use method is applied to the infusion device, the difficulty of puncture operation is reduced, and the medical staff is prevented from being punctured when the atraumatic needle is pulled out.
In the description of the present specification, if reference is made to "one embodiment," "some embodiments," "an exemplary embodiment," "an example," "a particular example," and "some examples," etc., the description of the reference term means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. An infusion device, comprising:
the infusion port assembly (100) comprises an injection seat (110), a puncture diaphragm (120) and a catheter (130), wherein a liquid storage groove (140) with an opening at the top is arranged in the injection seat (110), the puncture diaphragm (120) is arranged at the opening at the top of the liquid storage groove (140), and the catheter (130) is connected to the side part of the injection seat (110) and is communicated with the liquid storage groove (140);
the non-invasive needle assembly (200) comprises a non-invasive needle body (210), a finger-pressing button (220), an infusion extension tube (230), a base (240), an inner protective cylinder (250) and a compression spring (260), wherein the finger-pressing button (220) is arranged on the non-invasive needle body (210), the infusion extension tube (230) is connected to the tail part of the non-invasive needle body (210), the inner protective cylinder (250) is of a top opening structure, the inner protective cylinder (250) is arranged on the base (240) and is used for accommodating the head part of the non-invasive needle body (210), the head part of the base (240) corresponding to the non-invasive needle body (210) is provided with a avoiding hole (241) communicated with the interior of the inner protective cylinder (250), the finger-pressing button (220) is provided with an extending part (221) extending downwards, the extending part (221) is inserted into the interior of the inner protective cylinder (250) and can move up and down relative to the interior protective cylinder (250), the extending part (221) and the head part (250) is provided with a limit position between the finger-pressing button (250) and the first protective cylinder (210) to enable the finger-pressing button (250) to move to have a limit position when the finger-pressing button (250) is far inside the first protective cylinder (210), an unlocking locking structure is arranged between the extension part (221) and the inner protective cylinder (250) so that the finger-pressing button (220) has a second limit position, when the finger-pressing button (220) moves to the second limit position, the head of the atraumatic needle body (210) extends out of the inner protective cylinder (250) from the avoidance hole (241), the locking structure can lock the finger-pressing button (220) at the second limit position, the compression spring (260) is arranged between the finger-pressing button (220) and the base (240), and when the locking structure is unlocked, the compression spring (260) can drive the finger-pressing button (220) to move from the second limit position to the first limit position;
the magnetic structure is arranged between the injection seat (110) and the base (240);
wherein the anti-falling structure comprises a limit protrusion (222) arranged on the extension part (221), the locking structure comprises an elastic buckle (223) arranged on the extension part (221) and positioned right above the limit protrusion (222), a first avoidance opening (224) is arranged on the extension part (221) corresponding to the elastic buckle (223) so that the elastic buckle (223) can be folded inwards when being stressed, a rectangular through hole (251) is arranged on the inner protective cylinder (250) corresponding to the limit protrusion (222) and the elastic buckle (223), the limit protrusion (222) is at least partially positioned in the rectangular through hole (251), when the finger pressing button (220) moves to a first limit position, the limit protrusion (222) is abutted against the hole wall of the rectangular through hole (251) to limit the extension part (221) to be separated from the inner protective cylinder (250), when the finger pressing button (220) moves to a second limit position, the elastic buckle (222) is correspondingly arranged on the inner protective cylinder (250), the rectangular buckle (223) is abutted against the inner protective cylinder (270) and the second protective cylinder (270) is pressed down, the second protective cylinder (270) is pressed against the inner protective cylinder (240), an elastic force application part (271) is arranged on the outer protective cylinder (270) corresponding to the rectangular through hole (251), a second avoidance port (272) is arranged on the outer protective cylinder (270) corresponding to the elastic force application part (271), so that the elastic force application part (271) can be folded inwards when being stressed, and an abutting part (273) for driving the elastic buckle (223) to be separated from the rectangular through hole (251) is arranged on the elastic force application part (271).
2. The infusion device according to claim 1, wherein the elastic buckle (223) is provided with a first guiding inclined plane (225), and the limit projection (222) is provided with a second guiding inclined plane (226).
3. The infusion device of claim 1, wherein the magnetically attractable structure comprises a magnet (280) and a metallic member (150) capable of being attracted to the magnet (280), one of the magnet (280) and the metallic member (150) being disposed on the injection site (110) and the other being disposed on the base (240).
4. An infusion device as claimed in any one of claims 1 to 3, wherein the bottom of the base (240) is provided with an adhesive structure (290), the adhesive structure (290) comprising a flexible substrate layer (291) arranged at the bottom of the base (240), the area of the flexible substrate layer (291) being larger than the area of the bottom of the base (240), the bottom of the flexible substrate layer (291) being provided with an adhesive layer, the bottom of the adhesive layer being provided with a peelable protective layer (292), the middle of the protective layer (292) being provided with a first break.
5. The infusion device of claim 4, wherein the edges of the portions of the protective layer (292) on either side of the first break are provided with protruding tear portions (293).
6. The infusion device of claim 4, wherein a top of the flexible substrate layer (291) is provided with a peelable rigid annular rim (294) corresponding to an edge of the flexible substrate layer (291).
7. The infusion device of claim 6, wherein the rigid annular rim (294) is provided with a second break (295).
8. A method of use, as applied to an infusion device as claimed in any one of claims 4 to 7, comprising the steps of:
sterilizing the skin of the patient where the port assembly (100) is implanted;
finding out the position of the injection seat (110), and adsorbing the base (240) on the injection seat (110) through the magnetic structure;
one hand is used for fixing the injection seat (110), the other hand is used for pressing the finger-pressing button (220) so as to enable the finger-pressing button (220) to move from a first limit position to a second limit position, so that the head of the atraumatic needle body (210) extends out of the inner protective cylinder (250) from the avoidance hole (241) and sequentially pierces the skin of a patient and the piercing diaphragm (120), and meanwhile, the finger-pressing button (220) is locked at the second limit position through the locking structure;
confirming whether puncture is successful or not by means of blood drawing;
peeling off the protective layer (292) after confirming successful penetration, and subsequently adhering the flexible substrate layer (291) to the patient's skin via the adhesive layer to secure the atraumatic needle assembly (200);
any one of medical actions including drug infusion, fluid infusion, nutrition support, blood transfusion and blood sampling is carried out;
after any of the above medical actions is completed, one hand fixes the injection seat (110), and the other hand unlocks the locking structure so that the finger-pressure button (220) moves from the second limit position to the first limit position under the driving of the compression spring (260);
-tearing the flexible substrate layer (291) from the patient's skin and separating the base (240) and the injection seat (110).
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| CN202210575360.9A CN114870157B (en) | 2022-05-25 | 2022-05-25 | Infusion device and use method |
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| CN202210575360.9A CN114870157B (en) | 2022-05-25 | 2022-05-25 | Infusion device and use method |
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| CN114870157B true CN114870157B (en) | 2023-05-26 |
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|---|---|
| CN114870157A (en) | 2022-08-09 |
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