Anti-drop arteriovenous puncture needle

Abstract

The utility model discloses an anti-disengaging arteriovenous puncture needle, and relates to the technical field of puncture needles. The puncture needle comprises a puncture needle tube, a needle head is fixedly matched with one end of the puncture needle tube, and a fixing gasket is fixedly matched with the outer side wall of the puncture needle tube. The anti-falling chamfer is rotationally matched with the interior of the fixing gasket, a first annular plate is in threaded fit with the outer side wall of the anti-falling chamfer, and a second annular plate is rotationally matched with one side of the first annular plate. Through the arrangement of the second annular plate, the first annular plate drives the second annular plate to slide towards the fixed gasket under the action of a worker, and the anti-falling chamfer is positioned in the fixed gasket through one side of the second annular plate; the problem that in the prior art, after the orientation angle is adjusted, the anti-disengaging chamfer falls off from the interior of the fixing gasket is solved, and the using process of the puncture needle tube is more convenient and faster.

Description

Technical Field

[0001] This utility model belongs to the field of puncture needles, specifically, it relates to an arteriovenous puncture needle that prevents dislodgement. Background Technology

[0002] A puncture needle is a medical device used in minimally invasive surgery to sample and inject tissues from various organs, including the kidneys, liver, lungs, breasts, thyroid gland, prostate, pancreas, testes, uterus, ovaries, and body surface.

[0003] Patent application CN220293640U discloses an anti-dislodgement arteriovenous puncture needle. Paragraph 0028 of the specification discloses that: the anti-dislodgement chamfer forms a threaded detachable structure with the arteriovenous puncture needle tube through a fixing gasket, and the vertical central axis of the anti-dislodgement chamfer coincides with the vertical central axis of the sealing gasket; the fixing gasket facilitates changing the orientation of the anti-dislodgement chamfer, and after changing the orientation of the anti-dislodgement chamfer, the fixing gasket can be used to fix the anti-dislodgement chamfer to the arteriovenous puncture needle tube, thereby improving the sealing performance of the arteriovenous puncture needle tube during compression.

[0004] However, in practical applications, the fixing pad and the arteriovenous puncture needle form a threaded and detachable structure. When the direction of the anti-dislodgement chamfer is changed by changing the fixing pad, the anti-dislodgement chamfer is prone to fall off from the top of the fixing pad, which will affect the use of the arteriovenous puncture needle.

[0005] To address these shortcomings, a new type of arteriovenous puncture needle designed to prevent dislodgement is proposed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide an arteriovenous puncture needle that prevents dislodgement.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] A type of arteriovenous puncture needle for preventing dislodgement includes a puncture needle tube, one end of which is fixedly fitted with a needle tip, and the outer side wall of the puncture needle tube is fixedly fitted with a fixing pad.

[0009] A chamfered anti-detachment feature is rotatably fitted inside the fixing gasket. A first annular plate is threaded onto the outer wall of the chamfered anti-detachment feature. A second annular plate is rotatably fitted onto one side of the first annular plate. One side of the second annular plate engages with one side of the fixing gasket.

[0010] Optionally, a through hole is provided on one side of the fixing gasket, one end of the anti-detachment chamfer is rotatably fitted inside the through hole, and a sealing gasket is fixedly fitted to one end of the anti-detachment chamfer, with the sealing gasket adhering to one end of the fixing gasket.

[0011] Optionally, the bottom of the first annular plate is provided with an annular groove, and an annular column is fixedly fitted on one side of the second annular plate. The annular column is rotatably fitted inside the annular groove, and the cross-sections of the annular groove and the annular column are both T-shaped.

[0012] Optionally, a plurality of pointed tips are fixedly fitted on one side of the second annular plate, and one end of each pointed tip engages with one side of the fixing washer.

[0013] Optionally, a plurality of guide plates are fixedly fitted on one side of the second annular plate, and a plurality of slots are provided on the outer side wall of the fixing gasket, with one end of the guide plate located inside the slot.

[0014] Optionally, the inner wall of the first annular plate is provided with an internal thread, and the outer wall of the anti-detachment chamfer end is provided with an external thread, wherein the internal thread and the external thread are threadedly engaged.

[0015] Optionally, one end of the needle is provided with a bevel.

[0016] Optionally, the outer wall of the puncture needle tube is evenly distributed with multiple anti-slip protrusions.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0018] The second annular plate is designed so that the first annular plate can be moved by the operator to slide towards the fixed pad. The anti-dislodgement chamfer is positioned inside the fixed pad by one side of the second annular plate, which reduces the problem of the anti-dislodgement chamfer falling out of the fixed pad after the orientation angle is adjusted in the prior art, making the use of the puncture needle more convenient.

[0019] The groove is designed so that one end of the guide plate slides inside the groove under the action of the second annular plate, and the groove guides the sliding direction of the guide plate, reducing the problem of tilting during sliding and improving the stability of the guide plate during sliding.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0022] In the picture:

[0023] Figure 1This is a three-dimensional structural diagram of an embodiment of the present utility model. Figure 1 ;

[0024] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present utility model. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of an anti-detachment chamfer structure according to an embodiment of the present invention;

[0026] Figure 4 This is a cross-sectional structural diagram of an embodiment of the present invention.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] Puncture needle tube 100, needle tip 101, anti-slip protrusions 102, fixing pad 103, slot 104, through hole 105, anti-detachment chamfer 200, sealing gasket 201, first annular plate 202, annular groove 203, annular column 204, second annular plate 205, pointed tip 206, guide plate 207.

[0029] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] Please see Figure 1-4 As shown, this embodiment provides an anti-dislodgement arteriovenous puncture needle, including a puncture needle tube 100, one end of which is fixedly fitted with a needle tip 101, and a fixing pad 103 is fixedly fitted to the outer side wall of the puncture needle tube 100.

[0032] The anti-detachment chamfer 200 is rotatably fitted inside the fixed gasket 103. The outer wall of the anti-detachment chamfer 200 is threaded with a first annular plate 202. A second annular plate 205 is rotatably fitted on one side of the first annular plate 202. One side of the second annular plate 205 is snapped into one side of the fixed gasket 103.

[0033] Working principle:

[0034] First, rotate the first annular plate 202 upwards. The first annular plate 202 rotates around one end of the anti-detachment chamfer 200. The first annular plate 202 drives the second annular plate 205 to rotate. One side of the second annular plate 205 releases the positioning of the fixing pad 103. Then rotate the anti-detachment chamfer 200 and adjust the orientation angle of the anti-detachment chamfer 200. Then rotate the first annular plate 202 downwards. Similarly, the anti-detachment chamfer 200 is repositioned inside the fixing pad 103, thereby completing the adjustment of the orientation angle of the anti-detachment chamfer 200.

[0035] The second annular plate 205 is provided so that the first annular plate 202 can be driven by the operator to slide the second annular plate 205 toward the fixing pad 103. The anti-detachment chamfer 200 is positioned inside the fixing pad 103 by one side of the second annular plate 205, which reduces the problem of the anti-detachment chamfer 200 falling out of the fixing pad 103 after the orientation angle is adjusted in the prior art, making the use of the puncture needle 100 more convenient.

[0036] To make the sliding process of the second annular plate 205 on the side of the fixed pad 103 more stable in this embodiment, the following structure is used for improvement, such as... Figure 1-4 As shown, in this embodiment, a through hole 105 is provided on one side of the fixing gasket 103. One end of the anti-detachment chamfer 200 is rotatably fitted inside the through hole 105, and a sealing gasket 201 is fixedly fitted to one end of the anti-detachment chamfer 200. The sealing gasket 201 is attached to one end of the fixing gasket 103. An annular groove 203 is provided at the bottom of the first annular plate 202. An annular post 204 is fixedly fitted to one side of the second annular plate 205. The annular post 204 is rotatably fitted inside the annular groove 203. The cross-sections of the annular groove 203 and the annular post 204 are both T-shaped. One side of the second annular plate 205 is fixedly fitted... The first annular plate 202 has multiple pointed tips 206, one end of which engages with one side of the fixed pad 103. The second annular plate 205 has multiple guide plates 207 fixedly engaged on one side. The outer wall of the fixed pad 103 has multiple slots 104. One end of the guide plate 207 is located inside the slot 104. The inner wall of the first annular plate 202 has internal threads. The outer wall of one end of the anti-dislodgement chamfer 200 has external threads. The internal threads and external threads engage. One end of the needle 101 has a bevel. The outer wall of the puncture needle tube 100 has multiple anti-slip protrusions 102 evenly distributed and fixedly engaged.

[0037] In this embodiment, the first annular plate 202 is rotated first. The first annular plate 202 moves around the anti-detachment chamfer 200 through the internal and external threads. The first annular plate 202 drives the annular column 204 to slide upward through the annular groove 203. The annular column 204 drives the tip 206 to slide upward through the second annular plate 205 and releases the positioning of the fixing pad 103. The second annular plate 205 drives one end of the guide plate 207 to slide inside the slot 104. Then the anti-detachment chamfer 200 is rotated and the orientation angle of the anti-detachment chamfer 200 is adjusted. Then the first annular plate 202 is rotated downward. Similarly, the anti-detachment chamfer 200 is repositioned inside the fixing pad 103.

[0038] The slot 104 is designed so that one end of the guide plate 207 slides inside the slot 104 under the action of the second annular plate 205, and the slot 104 guides the sliding direction of the guide plate 207, reducing the problem of tilting of the guide plate 207 during sliding and improving the stability of the guide plate 207 during sliding.

[0039] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A type of arteriovenous puncture needle designed to prevent dislodgement, characterized in that, include: A puncture needle tube (100) is provided with a needle tip (101) fixedly fitted at one end, and a fixing gasket (103) is fixedly fitted on the outer side wall of the puncture needle tube (100). A chamfer (200) for preventing detachment is rotatably fitted inside the fixed gasket (103). The outer wall of the chamfer (200) is threaded with a first annular plate (202). A second annular plate (205) is rotatably fitted on one side of the first annular plate (202). One side of the second annular plate (205) is snapped into one side of the fixed gasket (103).

2. The arteriovenous puncture needle for preventing dislodgement according to claim 1, characterized in that, A through hole (105) is provided on one side of the fixing gasket (103). One end of the anti-detachment chamfer (200) is rotatably fitted inside the through hole (105). A sealing gasket (201) is fixedly fitted to one end of the anti-detachment chamfer (200). The sealing gasket (201) is attached to one end of the fixing gasket (103).

3. The arteriovenous puncture needle for preventing dislodgement according to claim 1, characterized in that, The bottom of the first annular plate (202) is provided with an annular groove (203), and an annular column (204) is fixedly fitted on one side of the second annular plate (205). The annular column (204) is rotatably fitted inside the annular groove (203). The cross sections of the annular groove (203) and the annular column (204) are both T-shaped.

4. The anti-dislodgement arteriovenous puncture needle according to claim 1, characterized in that, The second annular plate (205) has a plurality of pointed tips (206) fixedly fitted on one side, and one end of the pointed tips (206) is fitted with one side of the fixing gasket (103).

5. The arteriovenous puncture needle for preventing dislodgement according to claim 1, characterized in that, A plurality of guide plates (207) are fixedly fitted on one side of the second annular plate (205), and a plurality of slots (104) are provided on the outer side wall of the fixing gasket (103), with one end of the guide plate (207) located inside the slot (104).

6. The arteriovenous puncture needle for preventing dislodgement according to claim 1, characterized in that, The inner wall of the first annular plate (202) is provided with an internal thread, and the outer wall of one end of the anti-detachment chamfer (200) is provided with an external thread, and the internal thread and the external thread are threadedly engaged.

7. The arteriovenous puncture needle for preventing dislodgement according to claim 1, characterized in that, One end of the needle (101) is provided with a bevel.

8. The arteriovenous puncture needle for preventing dislodgement according to claim 1, characterized in that, The outer side wall of the puncture needle (100) is evenly provided with multiple anti-slip protrusions (102).

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