CN214911767U - Tunnel needle for tunnel type central venous catheter placement through peripheral vein - Google Patents
Tunnel needle for tunnel type central venous catheter placement through peripheral vein Download PDFInfo
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- CN214911767U CN214911767U CN202120352427.3U CN202120352427U CN214911767U CN 214911767 U CN214911767 U CN 214911767U CN 202120352427 U CN202120352427 U CN 202120352427U CN 214911767 U CN214911767 U CN 214911767U
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- catheter
- venous catheter
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Abstract
The utility model provides a tunnel needle that is used for tunnel type to put into central venous catheter through periphery vein relates to medical instrument's technical field. A tunnel needle for tunneling peripherally inserted central catheter includes a tunnel needle body; the two ends of the tunnel needle body are respectively provided with a first conical needle and a second conical needle. The technical effect of avoiding secondary damage to the subcutaneous tissue of the patient is achieved.
Description
Technical Field
The utility model relates to the technical field of medical equipment, particularly, relate to a tunnel needle that is used for tunnel type to put into central venous catheter through periphery vein.
Background
The Peripherally Inserted Central Catheter (PICC) is widely used in clinical practice as a safe and convenient venous access, especially for patients who need chemotherapy or infusion of hypertonic and irritant fluids, the PICC is the preferred mode, but due to some limiting conditions, such as small preset tube vein diameter, poor anatomical position of blood vessels, extreme skin relaxation and the like, many patients cannot successfully insert the PICC or have too high risk of Catheter-related complications after insertion, and the application of the tunnel PICC insertion technology well solves the problem.
The tunnel type PICC is a new technology for implanting a central venous catheter through a peripheral vein, and is different from the conventional PICC in that: by establishing a subcutaneous tunnel, the blood vessel puncture point is spaced from the catheter outlet, and the catheter outlet is transferred to a more suitable and advantageous position, which has the following advantages: the application of the tunnel type PICC implantation technology effectively reduces the risk of thrombosis, and the tunnel type PICC implantation technology can enable patients with high catheter-related thrombosis risk due to the fact that the diameter of the upper arm vein is too small to be successfully implanted. The risk of infection is reduced, the blood vessel puncture point is communicated with the catheter outlet through the subcutaneous tunnel, and the subcutaneous tunnel forms a barrier for preventing pollution, so that the infection caused by external factors can be effectively prevented. The catheter is prevented from falling out, and the falling out of the catheter is reduced due to the fixing effect of subcutaneous tissues. The catheter outlet is reserved at the most proper position of the upper arm, so that the possible discomfort of the patient in the arm moving process is avoided, and the comfort of the patient is improved.
However, there is no tunnel needle for the tunnel PICC at present, and the existing subcutaneous tunnel needle needs to be turned over during the use process, and the blunt end of the tunnel needle is sent to the blood vessel puncture port from the catheter outlet again, and the sharp end of the tunnel needle is at the catheter outlet, which may cause secondary damage to the subcutaneous tissue of the patient.
Therefore, it is an important technical problem to be solved by those skilled in the art to provide a tunneling needle for tunneling a central venous catheter through a peripheral vein without causing secondary damage to the subcutaneous tissue of a patient.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tunnel needle that is used for tunnel type to put into central venous catheter through periphery vein to alleviate and to cause secondary damage's technical problem to patient's subcutaneous tissue among the prior art.
In a first aspect, an embodiment of the present invention provides a tunnel needle for tunnel-type central venous catheter placement via a peripheral vein, including a tunnel needle body;
and a first conical needle and a second conical needle are respectively arranged at two ends of the tunnel needle body.
In combination with the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein both the first taper pin and the second taper pin are frustum-shaped.
In combination with the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein both ends of the first taper pin and the second taper pin are set to be rounded corners.
In combination with the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein a maximum diameter of the first tapered needle and the second tapered needle is equal to a diameter of the tunnel needle body.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the outer wall of the tunnel needle body is smooth and has no protrusion.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the tunnel needle body is made of a metal material.
In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the tunnel needle body is made of a medical stainless steel material.
Has the advantages that:
the embodiment of the utility model provides a tunnel needle for placing a central venous catheter through a peripheral vein in a tunnel manner, which comprises a tunnel needle body; the two ends of the tunnel needle body are respectively provided with a first conical needle and a second conical needle.
When the tunnel is established, the medical staff holds the tunnel needle by hand to send the first conical needle of the tunnel needle from the catheter outlet to the blood vessel puncture opening, then inserts the catheter on the second conical needle of the tunnel needle, and extracts the tunnel needle from the blood vessel puncture opening of the patient, so that the catheter is sent from the catheter outlet to the blood vessel puncture opening, and the catheter is arranged; through such setting, when keeping somewhere the patient subcutaneous tissue with the pipe, need not to extract the tunnel needle before establishing subcutaneous tunnel to avoid the tunnel needle secondary insertion to the patient in the subcutaneous tissue, and then avoid causing the secondary damage to the patient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a first embodiment of a tunneling needle for tunneling a central venous catheter through a peripheral vein according to an embodiment of the present invention.
Icon:
100-tunnel needle body;
200-a first conical needle;
300-second tapered needle.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Referring to fig. 1, an embodiment of the present invention provides a tunnel needle for tunneling a central venous catheter through a peripheral vein, including a tunnel needle body 100; the tunnel needle body 100 is provided at both ends thereof with a first tapered needle 200 and a second tapered needle 300, respectively.
When the catheter is used specifically, medical personnel carry out tunnel type central venous catheter placement through peripheral veins according to operation specifications, when a tunnel is established, the medical personnel hold the tunnel needle for tunnel type central venous catheter placement through peripheral veins provided by the embodiment to send the first conical needle 200 to a blood vessel puncture opening from a catheter outlet, then the medical personnel insert the catheter on the second conical needle 300 of the tunnel needle, and then pull out the tunnel needle from the blood vessel puncture opening of a patient, so that the catheter is sent to the blood vessel puncture opening from a catheter outlet, and the catheter is set; through such setting, when keeping somewhere the patient subcutaneous tissue with the pipe, need not to extract the tunnel needle before establishing subcutaneous tunnel to avoid the tunnel needle secondary insertion to the patient in the subcutaneous tissue, and then avoid causing the secondary damage to the patient.
Specifically, the both ends that are used for tunnel type to put into central venous catheter through periphery vein that this embodiment provided are provided with first toper needle 200 and second toper needle 300 respectively, thereby through the in-process that first toper needle 200 and second toper needle 300 that set up put into central venous catheter through periphery vein in the tunnel type and put the operation, medical personnel need not to carry out twice plug tunnel needle's operation, only need accomplish once tunnel needle insert with extract can, thereby can not cause the secondary injury to patient's subcutaneous tissue.
In the prior art, in the process of establishing a tunnel in the tunnel type central venous catheter catheterization via a peripheral vein, medical staff puncture a blood vessel under the guidance of B-ultrasonic, after the puncture is successful, a guide wire is sent into the blood vessel, the puncture needle exits from the blood vessel, and then local anesthesia is performed on a patient; then determining the outlet of the catheter, and expanding the skin by using a skin expanding knife so that the tunnel needle can be placed into the subcutaneous tissue of the patient; then the tip end of the tunnel needle is sent to the blood vessel puncture from the catheter outlet, and the tunnel needle can establish a tunnel in subcutaneous tissues of a patient at the moment; and the sharp end of the tunnel needle penetrates out of the blood vessel puncture; then the medical staff pulls out the tunnel needle; then the tunnel needle is turned over, the blunt end of the tunnel needle is sent to the blood vessel puncture opening from the catheter outlet again, and the tip end of the tunnel needle is positioned at the catheter outlet; then the medical staff sleeves the catheter on the tip of the tunnel needle; then the medical staff guides the catheter to pass through the tunnel by using the tunnel needle, so that the catheter can pass out of the blood vessel puncture opening along with the tunnel needle; in the prior art, the medical staff needs to complete the establishment of the subcutaneous tissue tunnel of the patient and the catheter passing through the tunnel in such a way.
And adopt the tunnel needle that central venous catheter was put into through the peripheral vein to the tunnel formula that this embodiment provided, medical personnel need not to carry out twice tunnel needle and pierces subcutaneous tissue's operation, only need once tunnel needle puncture subcutaneous tissue can. Specifically, medical personnel puncture a blood vessel under the guidance of B-ultrasonic, after the puncture is successful, a guide wire is sent into the blood vessel, the puncture needle is pulled out of the blood vessel, and then local anesthesia is carried out on a patient; then determining the outlet of the catheter, and expanding the skin by using a skin expanding knife so that the tunnel needle can be inserted into the subcutaneous tissue of the patient; then the first conical needle 200 of the tunnel needle is sent from the catheter outlet to the vascular puncture, and the tunnel needle establishes a tunnel in the subcutaneous tissue of the patient; and the first conical needle 200 of the tunnel needle passes out of the blood vessel puncture; then medical personnel with the pipe cover on tunnel needle's second conical needle 300, after the pipe is established to the cover, medical personnel steadily with tunnel needle from the blood vessel puncture mouth take out can, after tunnel needle was taken out, the tunnel of patient subcutaneous tissue can be passed along with tunnel needle to the pipe, follow tunnel needle and wear out from the blood vessel puncture mouth. Through such setting, medical personnel can only pierce into subcutaneous tissue through a tunnel needle and can accomplish the establishment in subcutaneous tunnel and keeping somewhere of pipe, can not cause the secondary damage to the patient, reduce the risk that the patient infects and the subcutaneous hemorrhage moreover.
Wherein, the first conical needle 200 and the second conical needle 300 at both ends of the tunnel needle body 100 can both realize the functions of puncturing and sleeving a catheter.
Referring to FIG. 1, in an alternative to the present embodiment, both the first tapered needle 200 and the second tapered needle 300 are frustoconical.
Specifically, set the first toper needle 200 that is used for the tunnel type to put into central venous catheter through peripheral vein that this embodiment provided to frustum form to make the tip of first toper needle 200 become blunt face, when making medical personnel use the first toper needle 200 of tunnel needle to puncture patient's subcutaneous tissue, guarantee that patient's subcutaneous tissue can establish the tunnel, can not make the patient receive the puncture injury.
Specifically, set the second conical needle 300 that is used for the tunnel needle of central venous catheter is put into through peripheral vein to the tunnel formula that this embodiment provided to the frustum form to make the tip of second conical needle 300 become blunt face, when making medical personnel use second conical needle 300 of tunnel needle to puncture patient's subcutaneous tissue, guarantee that patient's subcutaneous tissue can establish the tunnel, can not make the patient receive the puncture injury, also avoid medical personnel's risk of acupuncturing.
Referring to fig. 1, in an alternative of the present embodiment, both ends of both the first and second tapered needles 200 and 300 are provided with rounded corners.
Specifically, all process the fillet with the both ends that are used for the tunnel needle of central venous catheter is put into through periphery vein to the tunnel formula that this embodiment provided and handle the both ends of first toper needle 200 to make the smooth no edges and corners of first toper needle 200 outer wall, thereby avoid carrying out tunnel formula and put into central venous catheter through periphery vein and put into the ductus operation in-process and avoid first toper needle 200 to cause the injury to patient's subcutaneous tissue.
Specifically, the both ends of the second conical needle 300 for the tunnel needle of the central venous catheter is placed through the peripheral vein in the tunnel provided by the embodiment are all processed through the round angle, so that the outer wall of the second conical needle 300 is smooth and has no corner, and the subcutaneous tissue of the patient is prevented from being injured by the second conical needle 300 in the process of the tunnel needle placing through the peripheral vein in the central venous catheter tube placing operation.
Referring to fig. 1, in an alternative to this embodiment, the maximum diameter of the first tapered needle 200 is equal to the diameter of the tunneling needle body 100.
Referring to FIG. 1, in an alternative to this embodiment, the maximum diameter of the second tapered needle 300 is equal to the diameter of the tunneling needle body 100.
Referring to fig. 1, in an alternative embodiment, the outer wall of the tunneling needle body 100 is smooth and free of protrusions.
Specifically, the outer wall of the tunnel needle body 100 is smooth and has no protrusion, so that the tunnel needle body 100 is prevented from damaging subcutaneous tissues of a patient.
In an alternative of this embodiment, the tunnel needle body 100 is made of a metal material.
Specifically, the tunnel needle body 100 may be made of a metal material.
In an alternative embodiment, the main body 100 of the tunnel needle is made of medical stainless steel.
Specifically, the tunnel needle body 100 may be made of medical stainless steel.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (6)
1. A tunneling needle for tunneling a central venous catheter through a peripheral vein, comprising: a tunnel needle body (100);
the two ends of the tunnel needle body (100) are respectively provided with a first conical needle (200) and a second conical needle (300).
2. The tunneling needle for tunneled peripheral venous access to a central venous catheter according to claim 1, wherein both the first tapered needle (200) and the second tapered needle (300) are frustum-shaped.
3. The tunneling needle for tunneling through a peripheral venous access central venous catheter according to claim 2, wherein both ends of the first tapered needle (200) and the second tapered needle (300) are provided with rounded corners.
4. The tunneler needle for tunneler placement of a central venous catheter through a peripheral vein according to claim 1, wherein the outer wall of the tunneler needle body (100) is smooth and free of bulges.
5. The tunneler needle for tunneler placement of a central venous catheter through a peripheral vein according to any of claims 1-4 wherein the tunneler needle body (100) is made of metal.
6. The tunneling needle for tunneling transvenous placement of a central venous catheter according to claim 5, characterized in that the tunneling needle body (100) is made of medical stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120352427.3U CN214911767U (en) | 2021-02-07 | 2021-02-07 | Tunnel needle for tunnel type central venous catheter placement through peripheral vein |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120352427.3U CN214911767U (en) | 2021-02-07 | 2021-02-07 | Tunnel needle for tunnel type central venous catheter placement through peripheral vein |
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| CN214911767U true CN214911767U (en) | 2021-11-30 |
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| CN202120352427.3U Active CN214911767U (en) | 2021-02-07 | 2021-02-07 | Tunnel needle for tunnel type central venous catheter placement through peripheral vein |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115813761A (en) * | 2023-02-20 | 2023-03-21 | 四川大学华西医院 | Puncture-proof blunt needle of syringe for extracting liquid medicine and use method thereof |
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2021
- 2021-02-07 CN CN202120352427.3U patent/CN214911767U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115813761A (en) * | 2023-02-20 | 2023-03-21 | 四川大学华西医院 | Puncture-proof blunt needle of syringe for extracting liquid medicine and use method thereof |
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