CN113181474A - Safe type nondestructive puncture needle for infusion port - Google Patents
Safe type nondestructive puncture needle for infusion port Download PDFInfo
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- CN113181474A CN113181474A CN202110494876.6A CN202110494876A CN113181474A CN 113181474 A CN113181474 A CN 113181474A CN 202110494876 A CN202110494876 A CN 202110494876A CN 113181474 A CN113181474 A CN 113181474A
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- catheter
- puncture
- seat
- needle
- puncture needle
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- 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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- 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
Abstract
The invention provides a safe non-destructive puncture needle for an infusion port, which comprises a puncture component, an infusion component and an air delivery component, wherein the puncture component comprises a catheter holder, the puncture-proof seat is accommodated with a limiting block, the limiting block is provided with a limiting hole opposite to the needle core through hole, the front end of the puncture needle core is arranged in the catheter sheath, the rear end of the puncture needle core is fixedly connected with the inner top of the needle tube seat, the elastic sheet is bent backwards to be abutted against the surface of the puncture needle core, the needle tube seat is arranged on the outer wall of the puncture-proof seat, the surface of the puncture needle core is provided with a bulge close to the front end, and the infusion assembly and the air delivery assembly are connected with the catheter seat. This application is through once puncture accessible soft pipe infusion many times and can not drop from the puncture point, can not cause the needle stick to hinder.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a safe nondestructive puncture needle for an infusion port.
Background
The infusion port is a closed infusion device which can be repeatedly punctured and is completely implanted into a human body, and comprises a conduit part with the tip positioned in the superior vena cava and an injection seat embedded under the skin, wherein the injection seat consists of a puncture partition, a side wall, a base, a liquid storage tank and a suture hole. When the transfusion port is used, a matched puncture needle needs to be used for puncturing and entering the injection seat, and then the transfusion port is connected with a transfusion device for medicine intravenous transfusion. In the clinical application, when the puncture and the needle insertion are carried out on the infusion port, the injection seat is fixed by the thumb, the index finger and the middle finger of the non-dominant hand, the infusion port is arched, then the puncture needle is vertically inserted from the centers of the thumb, the index finger and the middle finger of the non-dominant hand by the dominant hand, and the puncture needle penetrates through the puncture partition of the injection seat, such as a silica gel partition, and reaches the bottom of the liquid storage tank of the injection seat.
In the practical use process, the puncture needle is inserted into the puncture septum for use when the transfusion port needs to transfuse, the puncture needle is pulled out of the puncture septum when the transfusion is not needed, and the gap of the pulled puncture needle can be instantly squeezed by the compact puncture septum such as a silica gel septum. However, the inventor of the application discovers that the puncture needle can be cut for many times by puncturing for many times, so that the compactness of the bacteria-blocking puncture partition is influenced, and the most serious consequence is that a gap is formed in the bacteria-blocking puncture partition, so that the transfusion port cannot have the bacteria-blocking effect; secondly, in clinical operation, the medical staff is found to have the possibility of stabbing the medical staff due to instinct reaction when pulling out the puncture needle; and the puncture needle is made of stainless steel basically, so that the stainless steel puncture needle can easily fall off from a puncture point in the transfusion treatment process of the transfusion port due to loose application of the fixed puncture needle, improper fixing method or external force traction and the like, so that the skin tissue of a patient is necrotized due to the extravasation of liquid medicine, the pain and economic burden of the patient are increased, and the transfusion safety cannot be well guaranteed.
Disclosure of Invention
The invention provides a safe puncture needle for an infusion port, which aims to solve the technical problems that the tightness of a bacterium-blocking puncture partition can be influenced and medical personnel can be punctured due to the fact that the puncture partition is punctured for many times by the existing puncture needle for the infusion port, and a puncture needle made of stainless steel is easy to fall off from a puncture point, so that liquid medicine is leaked out to cause skin tissue necrosis of a patient, and infusion safety cannot be well guaranteed.
In order to solve the technical problems, the invention adopts the following technical scheme:
a safe non-destructive puncture needle for an infusion port comprises a puncture assembly, an infusion assembly and an air delivery assembly; wherein, the puncture component comprises a catheter seat, a puncture-proof seat, a needle tube seat and a puncture needle core, the catheter seat is of a hollow structure, the front end of the catheter seat is fixedly connected with a soft catheter, the soft catheter is sleeved with a catheter sheath which is spliced with the front end of the catheter seat, the rear end of the catheter seat is tightly spliced with a sealing plug, the outer wall of the catheter seat is provided with two opposite butterfly wing handles which are axially vertical to the catheter seat, the central axis of the puncture-proof seat is provided with a needle core through hole which penetrates through the front and rear end walls, the front end of the puncture-proof seat is sleeved with the rear end of the catheter seat, the front part of the puncture-proof seat is provided with a concave cavity, a concave piece is clamped in the concave cavity, the front edge of the bottom of the concave piece is connected with an elastic sheet, the rear part of the puncture-proof seat is provided with an accommodating cavity, the accommodating cavity is internally accommodated with a limit block, and the limit hole which is opposite to the needle core through hole is arranged on the limit block, the outer wall of the needle tube seat is provided with a needle holding handle, the front end of the puncture needle core is arranged in the needle tube protective sleeve, the rear end of the puncture needle core sequentially penetrates through the soft catheter, the catheter seat, the sealing plug, the needle core through hole and the limiting hole to be fixedly connected with the inner top of the needle tube seat, the elastic sheet in the front of the concave part bends backwards to be abutted against the surface of the puncture needle core, the needle tube seat is sleeved on the outer wall of the puncture-proof seat, and the surface of the puncture needle core, close to the front end part, is provided with a protrusion which is matched and clamped with the limiting hole when the puncture needle core exits to the limiting block; the infusion assembly comprises an extension catheter, one end of the extension catheter is communicated with a catheter seat, the other end of the extension catheter is connected with an infusion connector, and a flow stopping clamp is sleeved on the extension catheter; the gas transmission assembly comprises a gas transmission channel arranged on the soft catheter and the catheter seat, the front end of the gas transmission channel is communicated with a smooth air bag which is fixedly surrounded on the circumferential surface of the soft catheter and can be clamped in the puncture point after inflation and expansion, the rear end of the gas transmission channel is communicated with a gas injection pipe arranged on the outer wall of the catheter seat, and the other end, far away from the catheter seat, of the gas injection pipe is tightly inserted with a gas injection plug.
Compared with the prior art, when the safe non-invasive puncture needle for the infusion port is used, medical staff holds the needle tube seat and the needle holding handle to drive the puncture needle core to vertically insert the needle into the infusion port, after the puncture needle core part enters the infusion port, the medical staff presses the butterfly wing handle with the thumb and the middle finger and holds the needle tube seat with the forefinger, finally the vertical flexible catheter and the puncture needle core are inserted into the liquid storage tank of the infusion port injection seat together, then the puncture needle core is withdrawn through the needle tube seat, when the withdrawn puncture needle core withdraws from the catheter seat and the concave part of the puncture-proof seat, the elastic sheet in the front of the concave part is bounced to separate from the collision with the surface of the puncture needle core, the bounced elastic sheet rapidly seals the needle core through hole at the front end of the puncture-proof seat, the puncture needle core is prevented from penetrating out of the front end of the puncture-proof seat, when the puncture needle core is continuously withdrawn until the surface of the puncture needle core protrudes and is clamped with the limiting hole on the limiting block, the puncture needle core stops withdrawing, so that the front section of the puncture needle core is stored in the puncture-proof seat, thereby avoiding the puncture injury of the puncture needle core to medical personnel, at the moment, under the action of withdrawing force and inertia thereof, the front end of the puncture-proof seat is separated from the rear end of the catheter seat, finally, the soft catheter is only safely kept in the groove of the transfusion port seat for transfusion treatment, thereby achieving the purpose of conveniently carrying out medicine transfusion for a plurality of times by one puncture, avoiding the influence of the prior puncture for a plurality of times on the compactness of the puncture space, then the butterfly wing handle is attached on the surface of the transfusion port to fix the catheter seat, finally, an air injector is used for puncturing the air injection plug to inject air into the air injection pipe, the injected air reaches the smooth air bag through the air transmission channel for inflation, the smooth air bag is clamped in the puncture point of the puncture space of the injection seat after being expanded, and the soft catheter is used for replacing the prior stainless steel puncture needle to be kept in the puncture space of the transfusion port, therefore, the friction force between the soft catheter such as a rubber tube and the puncture partition such as a silica gel partition can be enhanced, so that the soft catheter is ensured not to fall off from the puncture part, namely, the problem that the puncture needle falls off caused by the existing stainless steel puncture needle is avoided, the situation that the skin tissue of a patient is necrosed due to the fact that liquid medicine is leaked outwards when medicines with strong irritation are infused through the infusion assembly is avoided, the pain and the economic burden of the patient are reduced, and the infusion treatment safety of an infusion port is effectively guaranteed.
Furthermore, the butterfly wing handle, the extension conduit and the connecting point of the gas injection pipe and the conduit seat are positioned in the same plane and are arranged close to the rear end of the conduit seat.
Further, the extension pipe and the gas injection pipe are oppositely arranged on the pipe seat.
Furthermore, a plurality of salient points are arranged on the surface of the butterfly wing handle.
Furthermore, the front end of the puncture-proof seat is provided with a clamping groove, and the rear end of the catheter seat is provided with a lug matched with the clamping groove and the clamping sleeve.
Furthermore, the elastic sheet, the limiting block and the puncture needle core are made of the same material.
Further, the diameter of the protrusion is smaller than that of the stylet through hole and larger than that of the limiting hole.
Further, the lubricious balloon is disposed proximate the rear end of the flexible catheter.
Furthermore, the gas transmission channel is a cylindrical cavity channel which is integrally formed in the tube bodies of the soft catheter and the catheter seat.
Furthermore, the gas transmission channel is a circular cavity channel which is integrally formed in the tube bodies of the soft catheter and the catheter seat.
Drawings
Fig. 1 is a structural schematic view of a safety type nondestructive puncture needle of an infusion port provided by the invention.
FIG. 2 is a schematic structural view of the puncture needle core in the safe non-invasive puncture needle for the transfusion port provided by the invention after being separated from the support of the elastic sheet.
In the figure, 1, a puncture assembly; 11. a catheter hub; 111. a flexible conduit; 112. a catheter sheath; 113. a sealing plug; 114. a butterfly wing handle; 115. salient points; 116. a lug; 12. a puncture-proof seat; 121. a stylet through hole; 122. a concave cavity; 123. a female profile; 124. an elastic sheet; 125. a limiting block; 126. a limiting hole; 13. a needle tube base; 131. a needle holding handle; 14. a puncture needle core; 141. a protrusion; 2. a fluid delivery assembly; 21. extending the catheter; 22. an infusion connector; 23. a flow stopping clip; 3. a gas delivery assembly; 31. a gas transmission channel; 32. a smooth air bag; 33. a gas injection pipe; 34. and (5) air injection plug.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being 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. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, the invention provides a safety atraumatic puncture needle for an infusion port, comprising a puncture assembly 1, an infusion assembly 2 and an air delivery assembly 3; wherein, the puncture assembly 1 comprises a catheter holder 11, a puncture-proof holder 12, a needle tube holder 13 and a puncture needle core 14, the catheter holder 11 is of a hollow structure, the front end of the catheter holder 11 is fixedly connected with a flexible catheter 111, the flexible catheter 111 is sleeved with a catheter sheath 112 which is inserted in the front end of the catheter holder 11, the rear end of the catheter holder 11 is tightly inserted with a sealing plug 113, the sealing plug 113 is used for preventing liquid medicine from seeping out from the rear end of the catheter holder 11 on one hand and for stabilizing the pulling and inserting of the puncture needle core 14 on the other hand, two opposite butterfly wing handles 114 which are axially vertical to the catheter holder are arranged on the outer wall of the catheter holder 11, a needle core through hole 121 which penetrates through the front and rear end walls is arranged on the central axis of the puncture-proof holder 12, namely, the needle core through hole 121 penetrates through the front and rear end walls of the puncture-proof holder 12 along the central axis of the puncture-proof holder 12, the front end of the puncture-proof holder 12 is sleeved with the rear end of the catheter holder 11, the front part of the puncture-proof holder 12 is provided with a concave cavity 122, a concave member 123 is clamped in the concave cavity 122, an elastic sheet 124 is connected to the front edge of the bottom of the concave member 123, an accommodating cavity (not shown) is formed in the rear portion of the puncture-proof seat 12, a limit block 125 is accommodated in the accommodating cavity, a limit hole 126 opposite to the stylet through hole 121 is formed in the limit block 125, a needle holding handle 131 is arranged on the outer wall of the needle tube seat 13, the front end of the puncture stylet 14 is arranged in the catheter sheath 112, the rear end of the puncture stylet 14 sequentially penetrates through the flexible catheter 111, the catheter seat 11, the sealing plug 113, the stylet through hole 121 and the limit hole 126 to be fixedly connected with the inner top of the needle tube seat 13, the elastic sheet 124 in the front edge of the concave member 123 bends backwards to be in contact with the surface of the puncture stylet 14, namely, the elastic sheet 123 is pressed by the puncture stylet 14 when the puncture stylet 14 is assembled, the needle tube seat 13 is sleeved on the outer wall of the puncture-proof seat 12, and the surface of the puncture stylet 14 close to the front end is provided with the limit hole 126 when the puncture stylet exits to the limit block 125 A circle of protrusions 141 are arranged on the surface of the front end of the puncture needle core 14; the infusion assembly 2 comprises an extension catheter 21, one end of the extension catheter 21 is communicated with the catheter seat 11, the other end of the extension catheter 21 is connected with an infusion connector 22, the infusion connector 22 is used for connecting an existing infusion bag, a flow stopping clamp 23 is sleeved on the extension catheter 21, and the flow stopping clamp 23 is used for controlling the flow of liquid medicine in the extension catheter 21; the gas transmission component 3 comprises a gas transmission channel 31 arranged on the flexible conduit 111 and the conduit seat 11, namely, the gas transmission channel 31 is arranged on both the flexible conduit 111 and the conduit body of the conduit seat 11, the front end of the gas transmission channel 31 is communicated with a smooth air bag 32 which is fixedly arranged around the circumferential surface of the flexible conduit 111 and can be clamped in the puncture point after being inflated and expanded, namely, the smooth air bag 32 is fixedly arranged around the circumferential surface of the flexible conduit 111 and is communicated with the front end of the gas transmission channel 31, the smooth air bag 32 is almost tightly attached to the circumferential surface of the flexible conduit 111 when not being inflated with air, and can be rapidly expanded and clamped in the puncture point after being inflated with air, the rear end of the gas transmission channel 31 is communicated with a gas injection pipe 33 arranged on the outer wall of the conduit seat 11, the other end of the gas injection pipe 33 far away from the conduit seat 11 is tightly inserted with a gas injection plug 34, so that the air injected into the gas injection pipe 33 through the gas injection plug 34, can be transferred into the smooth air bag 32 through the air transfer channel 31 to realize inflation.
Compared with the prior art, when the safe non-invasive puncture needle for the infusion port is used, medical staff holds the needle tube seat and the needle holding handle to drive the puncture needle core to vertically insert the needle into the infusion port, after the puncture needle core part enters the infusion port, the medical staff presses the butterfly wing handle with the thumb and the middle finger and holds the needle tube seat with the forefinger, finally the vertical flexible catheter and the puncture needle core are inserted into the liquid storage tank of the infusion port injection seat together, then the puncture needle core is withdrawn through the needle tube seat, when the withdrawn puncture needle core withdraws from the catheter seat and the concave part of the puncture-proof seat, the elastic sheet in the front of the concave part is bounced to separate from the collision with the surface of the puncture needle core, the bounced elastic sheet rapidly seals the needle core through hole at the front end of the puncture-proof seat, the puncture needle core is prevented from penetrating out of the front end of the puncture-proof seat, when the puncture needle core is continuously withdrawn until the surface of the puncture needle core protrudes and is clamped with the limiting hole on the limiting block, the puncture needle core stops withdrawing, so that the front section of the puncture needle core is stored in the puncture-proof seat, thereby avoiding the puncture injury of the puncture needle core to medical personnel, at the moment, under the action of withdrawing force and inertia thereof, the front end of the puncture-proof seat is separated from the rear end of the catheter seat, finally, the soft catheter is only safely kept in the groove of the transfusion port seat for transfusion treatment, thereby achieving the purpose of conveniently carrying out medicine transfusion for a plurality of times by one puncture, avoiding the influence of the prior puncture for a plurality of times on the compactness of the puncture space, then the butterfly wing handle is attached on the surface of the transfusion port to fix the catheter seat, finally, an air injector is used for puncturing the air injection plug to inject air into the air injection pipe, the injected air reaches the smooth air bag through the air transmission channel for inflation, the smooth air bag is clamped in the puncture point of the puncture space of the injection seat after being expanded, and the soft catheter is used for replacing the prior stainless steel puncture needle to be kept in the puncture space of the transfusion port, therefore, the friction force between the soft catheter such as a rubber tube and the puncture partition such as a silica gel partition can be enhanced, so that the soft catheter is ensured not to fall off from the puncture part, namely, the problem that the puncture needle falls off caused by the existing stainless steel puncture needle is avoided, the situation that the skin tissue of a patient is necrosed due to the fact that liquid medicine is leaked outwards when medicines with strong irritation are infused through the infusion assembly is avoided, the pain and the economic burden of the patient are reduced, and the infusion treatment safety of an infusion port is effectively guaranteed.
As an embodiment, referring to FIG. 1, the connection points of the winged handles 114, the elongated catheter 21 and the gas injection tube 33 with the catheter hub 11 are located in the same plane and near the rear end of the catheter hub 11, so that when the catheter hub 11 is fixed on the surface of the port through the winged handles 114, the exposed portion of the catheter hub 11 on the surface of the port is minimized, thereby minimizing the influence on the catheter hub 11 due to external effects.
As a preferred embodiment, referring to fig. 1, the extension pipe 21 and the gas-injection pipe 33 are oppositely disposed on the pipe holder 11, and two corresponding butterfly handles 114 are oppositely disposed on the pipe holder 11 between the extension pipe 21 and the gas-injection pipe 33, so that the connection points of the butterfly handles 114, the extension pipe 21 and the gas-injection pipe 33 and the pipe holder 11 are ensured to be in the same plane, and can be more easily close to the rear end of the pipe holder 11.
As a specific embodiment, referring to fig. 1, a plurality of protrusions 115 are disposed on a surface of the wing handle 114, so that when the wing handle 114 is pressed, the protrusions can increase the friction between the fingers and the wing handle, thereby better pressing the catheter hub 11.
As a specific embodiment, referring to fig. 1, the front end of the puncture preventing base 12 is provided with a slot, and the rear end of the catheter base 11 is provided with a lug 116 that is engaged with the slot, so that during puncturing of the hand-held needle tube base 13 and the needle holder 131, the relative rotation between the puncture preventing base 12 and the catheter base 11 can be prevented from causing accidents.
In one embodiment, the elastic piece 124, the stopper 125 and the lancet core 14 are made of the same material, and may be made of stainless steel, so as to reduce the hand feeling of withdrawing the lancet caused by friction between different materials.
In a specific embodiment, the diameter of the protrusion is smaller than the diameter of the stylet through hole 121 and larger than the diameter of the limiting hole 126, so that when the puncture stylet 14 is retracted, the puncture stylet 14 can be ensured to pass through the stylet through hole 121 smoothly, and the protrusion on the surface of the puncture stylet 14 can be ensured to be clamped when the limiting hole is retracted, so that the front tip of the puncture stylet 14 can be stored in the puncture preventing seat 12.
As an example, referring to FIG. 1, the lubricious balloon 32 is positioned near the rear end of the flexible catheter 111 to allow the flexible catheter 111 to be inserted as far as possible during insertion into the port injection site to better prevent the flexible catheter 111 from backing out of the puncture site.
As a specific embodiment, the gas transmission channel 31 is a cylindrical cavity integrally formed in the tube bodies of the flexible tube 111 and the tube seat 11, that is, a cylindrical cavity is axially formed inside the tube bodies of the flexible tube 111 and the tube seat 11, the upper end of the cylindrical cavity is communicated with the gas injection tube 33, and the lower end of the cylindrical cavity is communicated with the smooth air bag 32.
As another specific embodiment, the gas transmission channel 31 is a circular cavity channel integrally formed in the tube body of the flexible tube 111 and the tube seat 11, that is, a circular cavity axially arranged in the tube body of the flexible tube 111 and the tube seat 11 is provided, the upper end of the circular cavity is communicated with the gas injection tube 33, and the lower end of the circular cavity is communicated with the smooth air bag 32.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A safe non-destructive puncture needle for an infusion port is characterized by comprising a puncture assembly, an infusion assembly and an air delivery assembly; wherein, the puncture component comprises a catheter seat, a puncture-proof seat, a needle tube seat and a puncture needle core, the catheter seat is of a hollow structure, the front end of the catheter seat is fixedly connected with a soft catheter, the soft catheter is sleeved with a catheter sheath which is spliced with the front end of the catheter seat, the rear end of the catheter seat is tightly spliced with a sealing plug, the outer wall of the catheter seat is provided with two opposite butterfly wing handles which are axially vertical to the catheter seat, the central axis of the puncture-proof seat is provided with a needle core through hole which penetrates through the front and rear end walls, the front end of the puncture-proof seat is sleeved with the rear end of the catheter seat, the front part of the puncture-proof seat is provided with a concave cavity, a concave piece is clamped in the concave cavity, the front edge of the bottom of the concave piece is connected with an elastic sheet, the rear part of the puncture-proof seat is provided with an accommodating cavity, the accommodating cavity is internally accommodated with a limit block, and the limit hole which is opposite to the needle core through hole is arranged on the limit block, the outer wall of the needle tube seat is provided with a needle holding handle, the front end of the puncture needle core is arranged in the needle tube protective sleeve, the rear end of the puncture needle core sequentially penetrates through the soft catheter, the catheter seat, the sealing plug, the needle core through hole and the limiting hole to be fixedly connected with the inner top of the needle tube seat, the elastic sheet in the front of the concave part bends backwards to be abutted against the surface of the puncture needle core, the needle tube seat is sleeved on the outer wall of the puncture-proof seat, and the surface of the puncture needle core, close to the front end part, is provided with a protrusion which is matched and clamped with the limiting hole when the puncture needle core exits to the limiting block; the infusion assembly comprises an extension catheter, one end of the extension catheter is communicated with a catheter seat, the other end of the extension catheter is connected with an infusion connector, and a flow stopping clamp is sleeved on the extension catheter; the gas transmission assembly comprises a gas transmission channel arranged on the soft catheter and the catheter seat, the front end of the gas transmission channel is communicated with a smooth air bag which is fixedly surrounded on the circumferential surface of the soft catheter and can be clamped in the puncture point after inflation and expansion, the rear end of the gas transmission channel is communicated with a gas injection pipe arranged on the outer wall of the catheter seat, and the other end, far away from the catheter seat, of the gas injection pipe is tightly inserted with a gas injection plug.
2. The atraumatic safety port puncture needle of claim 1 wherein the butterfly wing handle, the extension tube and the connection point of the insufflation tube to the catheter hub are in the same plane and located near the rear end of the catheter hub.
3. The atraumatic port safety spike of claim 2 wherein the extension catheter and the insufflation tube are oppositely disposed on the catheter hub.
4. The atraumatic port safety spike of claim 1 wherein the butterfly wing handle has a plurality of protrusions on its surface.
5. The atraumatic port safety needle of claim 1 wherein the forward end of the atraumatic hub defines a notch and the rearward end of the catheter hub defines a tab that engages the notch.
6. The atraumatic port safety spike of claim 1 wherein the resilient tab, the stop block and the spike core are made of the same material.
7. The atraumatic port safety spike of claim 1 wherein the diameter of the protrusion is smaller than the diameter of the core through hole and larger than the diameter of the stop hole.
8. The atraumatic port safety spike of claim 1 wherein the lubricious balloon is disposed proximal to the trailing end of the flexible catheter.
9. The atraumatic port safety spike of claim 1 wherein the air delivery passageway is a cylindrical lumen integrally formed in the body of the flexible catheter and catheter hub.
10. The atraumatic port safety spike of claim 1 wherein the air delivery channel is a circular lumen integrally formed in the body of the flexible catheter and catheter hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110494876.6A CN113181474B (en) | 2021-05-07 | 2021-05-07 | Safe type nondestructive puncture needle for infusion port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110494876.6A CN113181474B (en) | 2021-05-07 | 2021-05-07 | Safe type nondestructive puncture needle for infusion port |
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| Publication Number | Publication Date |
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| CN113181474A true CN113181474A (en) | 2021-07-30 |
| CN113181474B CN113181474B (en) | 2022-08-02 |
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| CN113181474B (en) | 2022-08-02 |
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