Needlestick-proof positioning infusion port puncture needle device

Abstract

The present invention relates to an anti-needlestick positioning infusion port puncture needle device, comprising a puncture needle and a tray, wherein a track distributed along the diameter direction is provided in the tray; the track comprises a hollow cylinder and two sections of transparent hollow tubes, the hollow cylinder is concentrically arranged at the center of the tray, and the two sections of transparent hollow tubes are symmetrically arranged on both sides of the hollow cylinder at 180 degrees, the inner ends of the transparent hollow tubes are fixed to the outer wall of the hollow cylinder, and the outer ends are fixed to the tray; the puncture needle is vertically inserted into the hollow cylinder, and a pull rod capable of elastic bending is movably provided in each section of the transparent hollow tube, an opening is provided in the upper part of the transparent hollow tube near the inner end, and one end of the pull rod extends from the opening and is connected to the needle handle of the puncture needle; an indicating scale line is provided on the surface of the transparent hollow tube, and a limit end is provided at one end of the pull rod located in the transparent hollow tube to prevent the pull rod from falling out. The present invention has an ingenious structure and a reasonable design, can accurately locate the puncture center, effectively avoids needlestick injuries, and is safe and reliable to use.

Description

Technical Field

[0001] The present invention relates to a device for puncturing an infusion port for intravenous infusion, in particular to a needle-puncture-proof positioning infusion port puncture needle device, belonging to the technical field of medical devices. Background Art

[0002] An infusion port is an infusion device that is completely implanted in the human body. Its main structure includes a venous catheter portion embedded in a human vein and an infusion port seat embedded in the human body. Intravenous infusion requires percutaneous puncture through a puncture needle into the infusion port seat for infusion. Currently, there are two main types of infusion port puncture needles in public use: ordinary puncture needles and needlestick-proof puncture needles. Ordinary puncture needles have a simple structure, but are prone to needlestick injuries during actual operation and are no longer recommended for use. However, the currently commonly used needlestick-proof puncture needles have disadvantages such as the needle tip being non-resilient and the needlestick-proof device blocking the line of sight, resulting in inaccurate puncture positioning. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a needlestick-proof positioning infusion port puncture needle device with an ingenious structure and reasonable design, which can accurately locate the puncture center, effectively avoid needlestick injuries, and is safe and reliable to use.

[0004] According to the technical solution provided by the present invention: the needle-stick-proof positioning infusion port puncture needle device includes a puncture needle, which is characterized by: further including a tray for positioning the infusion port seat, wherein a track distributed along the diameter direction is provided in the tray; the track includes a hollow cylinder and two sections of transparent hollow tubes, wherein the hollow cylinder is concentrically arranged at the center of the tray, and the two sections of transparent hollow tubes are symmetrically arranged 180 degrees on both sides of the hollow cylinder, the inner end of the transparent hollow tube is fixed to the outer wall of the hollow cylinder, and the outer end of the transparent hollow tube is fixed to the outer wall of the hollow cylinder. Connected to the tray; the puncture needle is vertically inserted into the hollow cylinder, and a pull rod that can be elastically bent is movably provided in each section of the transparent hollow tube. The upper part of the transparent hollow tube near the inner end is provided with an opening, and one end of the pull rod passes through the opening and is connected to the needle handle of the puncture needle; the surface of the transparent hollow tube is provided with an indicating scale line, and the insertion depth of the puncture needle can be judged by observing the position of the end of the pull rod on the indicating scale line, and the end of the pull rod located in the transparent hollow tube is provided with a limiting end to prevent the pull rod from falling out.

[0005] As a further improvement of the present invention, the inner hole cross section of the transparent hollow tube is an oblong rectangle, the limiting end is rod-shaped and vertically fixed to the end of the pull rod, and a T-shaped structure is formed between the limiting end and the pull rod.

[0006] As a further improvement of the present invention, the transparent hollow tube is flat, and the pull rod is flat.

[0007] As a further improvement of the present invention, the needle handle of the puncture needle is L-shaped, and a handle wing for easy grasping is provided at the upper end of the needle handle.

[0008] As a further improvement of the present invention, the hollow cylinder is also made of a transparent material and forms an integral structure with the two sections of transparent hollow tubes.

[0009] As a further improvement of the present invention, a first tooth surface is provided on the inner side surfaces on both sides of the transparent hollow tube near the outer end, and a second tooth surface is provided on the inner side surfaces on both sides of the transparent hollow tube near the opening; when the puncture needle is inserted into the infusion port seat to a set depth, the two ends of the limit end begin to contact and abut against the second tooth surface; when the puncture needle is pulled upward to a set length, the two ends of the limit end begin to contact and abut against the first tooth surface.

[0010] As a further improvement of the present invention, the teeth in the second tooth surface are arc-surface teeth, and both ends of the limiting end head are round heads.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] The present invention has an ingenious structure and a reasonable design. By arranging a tray, a track and a pull rod, during operation, the tray is first used to locate and estimate the puncture center, and then the puncture needle is pressed downward to make the puncture needle pass through the tray and the skin to reach the infusion port seat, thereby achieving the purpose of positioning before puncturing, which can greatly increase the success rate of puncture; and the cooperation of the track and the pull rod can control the extension and retraction stroke of the puncture needle, which can ensure that the puncture needle will not penetrate too deeply when it is advanced, and can ensure that the needle tip of the puncture needle returns to the hollow cylinder without being exposed when it is retreated, effectively preventing the occurrence of needle stick injuries, and is very safe and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural front view of an embodiment of the present invention.

[0014] Figure 2 2 is a top view of the structure of an embodiment of the present invention.

[0015] Figure 3 It is a main cross-sectional view of the structure of an embodiment of the present invention.

[0016] Figure 4 For the embodiment of the present invention Figure 2 The AA-direction enlarged cross-sectional view of the local structure.

[0017] Figure 5 For the embodiment of the present invention Figure 3 A partial enlarged view of point B in FIG.

[0018] Figure 6 It is a side view of the puncture needle in an embodiment of the present invention.

[0019] Explanation of the accompanying drawings: 1-puncture needle, 1a-needle handle, 1b-handle wing, 2-tray, 3-track, 3.1-hollow cylinder, 3.2-transparent hollow tube, 3.2a-opening, 3.2b-first tooth surface, 3.2c-second tooth surface, 4-pull rod, 4a-limiting end. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to specific drawings and embodiments.

[0021] like Figures 1 to 3 As shown, the embodiment discloses a needle-stick-proof positioning infusion port puncture needle device, comprising a puncture needle 1 and a tray 2 for positioning an infusion port seat, wherein a track 3 distributed along the diameter direction is provided in the tray 2; the track 3 comprises a hollow cylinder 3.1 and two sections of transparent hollow tubes 3.2, wherein the hollow cylinder 3.1 is concentrically arranged at the center of the tray 2, and the two sections of transparent hollow tubes 3.2 are symmetrically arranged at 180 degrees on both sides of the hollow cylinder 3.1, the inner end of the transparent hollow tube 3.2 is fixedly connected to the outer wall of the hollow cylinder 3.1, and the outer end of the transparent hollow tube 3.2 is fixedly connected to the tray 2; The puncture needle 1 is vertically inserted into the hollow cylinder 3.1, and a pull rod 4 that can be elastically bent is movably provided in each section of the transparent hollow tube 3.2. An opening 3.2a is provided in the upper part of the transparent hollow tube 3.2 near the inner end, and one end of the pull rod 4 passes through the opening 3.2a and is connected to the needle handle 1a of the puncture needle 1; an indicating scale line is provided on the surface of the transparent hollow tube 3.2, and the insertion depth of the puncture needle 1 can be judged by observing the position of the end of the pull rod 4 on the indicating scale line. The end of the pull rod 4 located in the transparent hollow tube 3.2 is provided with a limiting end 4a to prevent the pull rod 4 from falling out.

[0022] During use, the tray 2 is placed above the infusion port at the pre-puncture site on the skin. The relative position of the tray 2 and the infusion port is used to estimate the puncture center. Then, the puncture needle 1 is pressed vertically downward, passing through the tray 2 and the skin to the infusion port seat. This achieves the purpose of positioning before puncture, greatly increasing the success rate of puncture. To remove the puncture needle 1, the edge of the tray 2 is directly pressed and the needle handle 1a of the puncture needle 1 is pulled upward, so that the needle tip of the puncture needle 1 returns to the hollow cylinder 3.1 and is not exposed. This effectively prevents needlestick injuries. During the above operation, the pull rod 4 will slide in the transparent hollow tube 3.2 as the puncture needle 1 moves vertically, so that the insertion depth of the puncture needle 1 can be judged by observing the position of the end of the pull rod 4 on the indicator scale line; because the limit end 4a of the pull rod 4 is located in the transparent hollow tube 3.2 and will not fall out, the extension and retraction stroke of the puncture needle 1 can be controlled. The forward movement can ensure that the puncture needle 1 will not be inserted too deeply, and the backward movement can ensure that the puncture needle 1 will not be accidentally pulled out completely when it is pulled out. It is very safe and reliable to use.

[0023] like Figures 3 to 5 As shown, in this embodiment, the inner cross-section of the transparent hollow tube 3.2 is an oblong rectangle, and the limiting end 4a is rod-shaped and vertically fixed to the end of the pull rod 4, forming a T-shaped structure between the limiting end 4a and the pull rod 4. This arrangement can ensure that the pull rod 4 slides smoothly in the transparent hollow tube 3.2.

[0024] like Figures 3 to 5 As shown, in this embodiment, the transparent hollow tube 3.2 is flat, and the pull rod 4 is flat. This arrangement facilitates the placement and viewing of the indicator scale lines, while the flat pull rod 4 provides better directionality when bent, eliminating the problem of being unable to enter the transparent hollow tube 3.2 through the opening 3.2a due to deflection in the bending direction. Of course, in actual manufacturing, the pull rod 4 can also be a round rod.

[0025] like Figures 1 to 3 、 Figure 6 As shown, in this embodiment, the needle handle 1a of the puncture needle 1 is L-shaped, and a handle wing 1b is provided at the upper end of the needle handle 1a for easy grasping. Such a configuration makes it easy to grasp the puncture needle 1 for operation.

[0026] In this embodiment, the hollow cylinder 3.1 is also made of transparent material and is integrated with the two transparent hollow tubes 3.2. This configuration can reduce the difficulty of manufacturing and accurately observe the position of the puncture needle 1 in the hollow cylinder 3.1.

[0027] like Figures 3 to 5 As shown, in this embodiment, the transparent hollow tube 3.2 is provided with first toothed surfaces 3.2b on both inner side surfaces near the outer end, and second toothed surfaces 3.2c on both inner side surfaces near the opening 3.2a. When the puncture needle 1 is inserted into the infusion port to a set depth, the ends of the stopper 4a begin to contact and abut against the second toothed surfaces 3.2c. When the puncture needle 1 is pulled upward to a set length, the ends of the stopper 4a begin to contact and abut against the first toothed surfaces 3.2b. With this arrangement, after the puncture needle 1 has penetrated the infusion port to a certain depth, the ends of the stopper 4a begin to contact and abut against the second toothed surfaces 3.2c, engaging and engaging with each other, positioning the puncture needle 1 at the appropriate puncture depth. Furthermore, medical personnel can determine that the puncture needle 1 has reached the appropriate depth by the resistance generated by the contact between the stopper 4a and the second toothed surfaces 3.2c. When the puncture needle 1 is pulled out, it is pulled upward a certain distance and the tip of the puncture needle 1 is located in the hollow cylinder 3.1. The two ends of the limit end 4a begin to contact and abut against the first tooth surface 3.2b and engage with each other, so that the puncture needle 1 is positioned at a position where the needle tip is located in the hollow cylinder 3.1.

[0028] like Figures 3 to 5As shown, in this embodiment, the teeth on the second tooth surface 3.2c are arcuate teeth, and the ends of the limit end 4a are rounded. This arrangement ensures that the ends of the limit end 4a can form a resistive contact with the first tooth surface 3.2b and the second tooth surface 3.2c, while preventing them from getting stuck during movement.

[0029] The above description is merely a preferred embodiment of the present invention, and the above specific embodiment is not intended to limit the present invention. Various variations and modifications are possible within the technical scope of the present invention. Any modifications, alterations, or equivalent substitutions made by a person skilled in the art based on the above description are within the scope of protection of the present invention.

Claims

1. A needle-stick-proof positioning infusion port puncture needle device, comprising a puncture needle (1), characterized in that: The invention also includes a tray (2) for positioning an infusion port seat, wherein a track (3) distributed along the diameter direction is provided in the tray (2); the track (3) includes a hollow cylinder (3.1) and two sections of transparent hollow tubes (3.2); the hollow cylinder (3.1) is concentrically arranged at the center of the tray (2); the two sections of transparent hollow tubes (3.2) are symmetrically arranged 180 degrees on both sides of the hollow cylinder (3.1); the inner end of the transparent hollow tube (3.2) is fixed to the outer wall of the hollow cylinder (3.1), and the outer end of the transparent hollow tube (3.2) is fixed to the tray (2); the puncture needle (1) is vertically penetrated in the hollow cylinder (3.1) and the outer end of the transparent hollow tube (3.2) is fixed to the tray (2); 1), a pull rod (4) capable of elastic bending is movably provided in each section of the transparent hollow tube (3.2), an opening (3.2a) is provided in the upper portion of the transparent hollow tube (3.2) near the inner end, one end of the pull rod (4) passes through the opening (3.2a) and is connected to the needle handle (1a) of the puncture needle (1); an indicating scale line is provided on the surface of the transparent hollow tube (3.2), and the insertion depth of the puncture needle (1) can be judged by observing the position of the end of the pull rod (4) on the indicating scale line, and one end of the pull rod (4) located in the transparent hollow tube (3.2) is provided with a limiting end (4a) for preventing the pull rod (4) from falling out.

2. The needlestick-proof positioning infusion port puncture needle device according to claim 1, characterized in that: The inner hole cross section of the transparent hollow tube (3.2) is in the shape of a flat long rectangle, the limiting end (4a) is in the shape of a rod and is vertically fixed to the end of the pull rod (4), and a T-shaped structure is formed between the limiting end (4a) and the pull rod (4).

3. The needlestick-proof positioning infusion port puncture needle device according to claim 2, characterized in that: The transparent hollow tube (3.2) is flat, and the pull rod (4) is flat.

4. The needlestick-proof positioning infusion port puncture needle device according to claim 1, characterized in that: The needle handle (1a) of the puncture needle (1) is L-shaped, and a handle wing (1b) for easy grasping is provided at the upper end of the needle handle (1a).

5. The needlestick-proof positioning infusion port puncture needle device according to claim 1, characterized in that: The hollow cylinder (3.1) is also made of a transparent material and forms an integral structure with the two sections of transparent hollow tubes (3.2).

6. The needlestick-proof positioning-type infusion port puncture needle device according to any one of claims 1 to 5, characterized in that: The transparent hollow tube (3.2) is provided with first tooth surfaces (3.2b) on both inner side surfaces near the outer end, and the transparent hollow tube (3.2) is provided with second tooth surfaces (3.2c) on both inner side surfaces near the opening (3.2a); when the puncture needle (1) is inserted into the infusion port seat to a set depth, the two ends of the limit end (4a) begin to contact and abut against the second tooth surfaces (3.2c); when the puncture needle (1) is pulled upward to a set length, the two ends of the limit end (4a) begin to contact and abut against the first tooth surfaces (3.2b).

7. The needlestick-proof positioning infusion port puncture needle device according to claim 6, characterized in that: The teeth on the second tooth surface (3.2c) are arcuate teeth, and both ends of the limiting end head (4a) are circular heads.

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