Dialysis puncture needle

Abstract

This utility model discloses a dialysis puncture needle, including a needle tip, one end of which is fixed and connected to a needle hub, and the end of the needle hub away from the needle tip is fixed and connected to a catheter. A connector is installed at the end of the catheter away from the needle hub. An annular cylinder is fixed to the outside of the catheter, and two needle wings are symmetrically fixed to the outside of the annular cylinder. A protective cap is slidably connected to the outside of the catheter. After puncturing the needle, the covering film is torn off, and then the adhesive tape and connecting tape are flipped over to adhere the double-sided tape to the patient. At this point, the needle is fixed to the patient, eliminating the need to cut additional tape, making this method more convenient. After removing the needle from the patient, the protective cap is moved outside the needle, and the adhesive tape is folded over again to adhere the double-sided tape to the protective cap. The protective cap and adhesive tape are now fixed together, meaning the protective cap is fixed outside the needle, protecting the needle inside and preventing accidental injury to subsequent waste disposal personnel.

Description

Technical Field

[0001] This utility model relates to the field of puncture needle technology, and in particular to a dialysis puncture needle. Background Technology

[0002] Hemodialysis utilizes the principle that solutes flow from a side with high concentration to a side with low concentration. Blood and dialysate are simultaneously introduced into a dialyzer equipped with a hollow fiber semi-permeable membrane. Blood is positioned on one side of the membrane, and dialysate on the other. The solutions on both sides of the membrane diffuse and osmotically, removing small and medium-sized toxins from the blood. Simultaneously, electrolytes in the blood are balanced through osmosis, thus achieving blood purification. During hemodialysis, a hemodialysis needle connects the patient to the dialyzer.

[0003] Currently, the needles used in clinical dialysis punctures are relatively thick because hemodialysis requires a higher blood flow rate and a long-term vascular access to ensure long-term hemodialysis treatment. In contrast, the needles used for common blood donation injections are relatively thin to reduce pain and discomfort for blood donors and patients. Dialysis puncture needles are disposable and are usually discarded after use. Because the needles of dialysis puncture needles are relatively thick, they are not protected after use, which can easily cause accidental injury to waste disposal personnel. In addition, when using dialysis puncture needles, medical tape is usually used to fix the needle, which requires cutting multiple appropriately sized pieces of tape, making the process cumbersome. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] In view of this, the purpose of this utility model is to provide a dialysis puncture needle. The technical problem to be solved is that the needle tip of the dialysis puncture needle is relatively thick, and it is not protected after use, which can easily cause accidental injury to the subsequent waste disposal personnel. In addition, when using the dialysis puncture needle, medical tape is usually used to fix the puncture needle, which requires cutting multiple pieces of tape of appropriate size, which is a cumbersome process.

[0006] (II) Technical Solution

[0007] To achieve the above technical objectives, this utility model provides a dialysis puncture needle:

[0008] It includes a needle, one end of which is fixed and connected to a needle hub, the end of which, away from the needle, is fixed and connected to a catheter, a connector is installed at the end of the catheter away from the needle hub, an annular cylinder is fixed to the outside of the catheter, two needle wings are symmetrically fixed to the outside of the annular cylinder, a protective cap is slidably connected to the outside of the catheter, and an adhesive attachment is provided on the outside of the catheter. The adhesive attachment can fix the needle to the patient. After use, the needle is pulled out, the protective cap is moved outside the needle, and the adhesive attachment can also fix the protective cap outside the needle.

[0009] In a preferred embodiment of the dialysis puncture needle of this utility model, an annular plate is fixed to the outside of the catheter, the annular plate is located between the needle seat and the annular cylinder, two connecting straps are symmetrically fixed to the outside of the annular plate, and an adhesive tape is fixed to the side of the connecting strap away from the annular plate.

[0010] In a preferred embodiment of the dialysis puncture needle of this utility model, the adhesive attachment includes a double-sided adhesive tape adhered to one side of the adhesive tape, and a covering film is adhered to the side of the double-sided adhesive tape away from the adhesive tape.

[0011] In a preferred embodiment of the dialysis puncture needle described in this utility model, a paddle is fixed to the side of the adhesive tape away from the connecting tape.

[0012] In a preferred embodiment of the dialysis puncture needle of this utility model, the distance between the needle tip and the annular cylinder at one end is less than the length of the protective cap, the diameter of the inner ring of the protective cap is greater than the diameter of the annular cylinder, the needle seat, and the needle tip, and the diameter of the protective cap is less than the diameter of the connector.

[0013] As a preferred embodiment of the dialysis puncture needle of this utility model, the protective cap has two symmetrically formed grooves on its outer side. The height of the grooves is greater than the thickness of the needle wing, the needle wing can be embedded in the grooves, and the height of the grooves is less than the diameter of the catheter.

[0014] As can be seen from the above technical solutions, this application has the following beneficial effects:

[0015] 1. After puncturing the needle, tear off the covering film, then flip the adhesive tape and connecting tape to stick the double-sided tape to the patient. At this point, the needle is fixed to the patient, and there is no need to cut the corresponding tape again. This method is more convenient.

[0016] 2. After removing the needle from the patient, move the protective cap so that it is outside the needle. Then fold the adhesive tape so that the double-sided tape adheres to the protective cap. At this point, the protective cap and the adhesive tape are fixed together, that is, the protective cap is fixed outside the needle, so that the needle is protected inside the protective cap, preventing the needle from causing accidental injury to subsequent waste disposal personnel. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a dialysis puncture needle provided by this utility model;

[0019] Figure 2 A schematic diagram showing the disassembled structure of a dialysis puncture needle provided by this utility model;

[0020] Figure 3 Provided by this utility model Figure 2 Enlarged structural diagram at point A;

[0021] Figure 4 This is a partial structural diagram of a dialysis puncture needle used in accordance with the present invention.

[0022] Figure descriptions: 1. Needle; 2. Needle hub; 3. Guide tube; 4. Connector; 5. Annular tube; 6. Needle wing; 7. Protective cap; 8. Annular piece; 9. Connecting strap; 10. Adhesive tape; 11. Double-sided tape; 12. Covering film; 13. Paddle; 14. Groove. Detailed Implementation

[0023] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of the various embodiments of this disclosure. Certain details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures.

[0024] Reference Figure 1-4 :

[0025] In one embodiment of this utility model, a dialysis puncture needle is provided, including a needle tip 1. One end of the needle tip 1 is fixed and connected to a needle hub 2. The end of the needle hub 2 away from the needle tip 1 is fixed and connected to a catheter 3. A connector 4 is installed at the end of the catheter 3 away from the needle hub 2. An annular cylinder 5 is fixed to the outside of the catheter 3. Two needle wings 6 are symmetrically fixed to the outside of the annular cylinder 5. A protective cap 7 is slidably connected to the outside of the catheter 3. An adhesive attachment is provided on the outside of the catheter 3. The adhesive attachment can fix the needle tip 1 and the patient. After use, the needle tip 1 is pulled out, and the protective cap 7 is moved outside the needle tip 1. The adhesive attachment can also fix the protective cap 7 outside the needle tip 1.

[0026] Among them, an annular piece 8 is fixed on the outside of the catheter 3. The annular piece 8 is located between the needle seat 2 and the annular cylinder 5. Two connecting strips 9 are symmetrically fixed on the outside of the annular piece 8. An adhesive strip 10 is fixed on the side of the connecting strip 9 away from the annular piece 8. The adhesive accessories include double-sided tape 11 adhered to one side of the adhesive strip 10. A covering film 12 is adhered to the side of the double-sided tape 11 away from the adhesive strip 10. A paddle 13 is fixed on the side of the adhesive strip 10 away from the connecting strip 9.

[0027] In use, after puncturing with needle 1, tear open the covering film 12, then flip over the adhesive tape 10 and connecting tape 9 so that the double-sided adhesive tape 11 adheres to the patient. The adhesive state is as follows. Figure 4 As shown, the needle 1 is fixed to the patient at this time. Due to the setting of the pry bar 13, it is convenient to peel the adhesive tape 10 off the patient later.

[0028] Furthermore, the distance between the needle 1 and the annular cylinder 5 at one end is less than the length of the protective cap 7. The diameter of the inner ring of the protective cap 7 is greater than the diameter of the annular cylinder 5, the needle seat 2, and the needle 1, and the diameter of the protective cap 7 is less than the diameter of the connector 4. It should be noted that, since the diameter of the inner ring of the protective cap 7 is greater than the diameter of the annular cylinder 5, the needle seat 2, and the needle 1, when the protective cap 7 is moved, the protective cap 7 can pass from the outside of the annular cylinder 5, the needle seat 2, and the needle 1 to cover the outside of the needle 1, so that the protective cap 7 seals the needle 1 and prevents the needle 1 from causing accidental injury to the outside. In addition, two grooves 14 are symmetrically opened on the outside of the protective cap 7. The height of the grooves 14 is greater than the thickness of the needle wing 6, and the needle wing 6 can be embedded in the grooves 14. The height of the grooves 14 is less than the diameter of the guide tube 3.

[0029] When in use, after removing the needle 1 from the patient, move the protective cap 7 so that it moves outside the needle 1. At this time, the needle wing 6 is located in the groove 14. Then fold the adhesive tape 10 so that the double-sided tape 11 and the protective cap 7 are bonded together. At this time, the protective cap 7 and the adhesive tape 10 are fixed together, that is, the protective cap 7 is fixed outside the needle 1, so that the needle 1 is protected inside the protective cap 7, avoiding accidental injury to subsequent waste disposal personnel.

[0030] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A dialysis puncture needle, comprising a needle tip (1), characterized in that, One end of the needle (1) is fixed and connected to a needle seat (2). The end of the needle seat (2) away from the needle (1) is fixed and connected to a catheter (3). The end of the catheter (3) away from the needle seat (2) is equipped with a connector (4). An annular cylinder (5) is fixed to the outside of the catheter (3). Two needle wings (6) are symmetrically fixed to the outside of the annular cylinder (5). A protective cap (7) is slidably connected to the outside of the catheter (3). An adhesive attachment is provided on the outside of the catheter (3). The adhesive attachment can fix the needle (1) and the patient. After use, the needle (1) is pulled out and the protective cap (7) is moved outside the needle (1). The adhesive attachment can also fix the protective cap (7) outside the needle (1).

2. The dialysis puncture needle according to claim 1, characterized in that, An annular piece (8) is fixed to the outside of the catheter (3). The annular piece (8) is located between the needle seat (2) and the annular cylinder (5). Two connecting strips (9) are symmetrically fixed to the outside of the annular piece (8). An adhesive strip (10) is fixed to the side of the connecting strip (9) away from the annular piece (8).

3. A dialysis puncture needle according to claim 2, characterized in that, The adhesive attachment includes a double-sided tape (11) adhered to one side of the adhesive tape (10), and a cover film (12) is adhered to the side of the double-sided tape (11) away from the adhesive tape (10).

4. A dialysis puncture needle according to claim 2, characterized in that, A paddle (13) is fixed to the side of the adhesive tape (10) away from the connecting tape (9).

5. A dialysis puncture needle according to claim 1, characterized in that, The distance between the needle (1) and the annular cylinder (5) at one end is less than the length of the protective cap (7). The diameter of the inner ring of the protective cap (7) is greater than the diameter of the annular cylinder (5), the needle seat (2), and the needle (1), and the diameter of the protective cap (7) is less than the diameter of the connector (4).

6. A dialysis puncture needle according to claim 1, characterized in that, The protective cap (7) has two symmetrical grooves (14) on its outer side. The height of the grooves (14) is greater than the thickness of the needle blade (6). The needle blade (6) can be embedded in the grooves (14), and the height of the grooves (14) is less than the diameter of the guide tube (3).

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