A puncture needle with antibacterial coating

Abstract

The utility model belongs to the field of medical devices, and specifically relates to a puncture needle with an antibacterial coating, comprising a base and a catheter with a guide channel, wherein the outer periphery of the catheter is provided with a spring member connected to the base; a puncture mechanism comprises a skin-attaching pad connected to the spring member, wherein the skin-attaching pad has an antibacterial sleeve penetrating the guide channel, wherein the distal end of the antibacterial sleeve is provided with a guide pad, and an antibacterial puncture needle is clamped inside; when puncturing, a limit rod rotates to disengage and cancel the limit, cancels the compression of the spring member, and the spring member relaxes and resets, driving the antibacterial sleeve to slide in the catheter, assisting the antibacterial sleeve and the antibacterial puncture needle to puncture a patient's limb, and the puncture depth is kept constant, and according to the patient's weight, the remaining puncture distance can be supplemented with puncture, thereby solving the problem of needing to perform multiple punctures in sections due to different patient weights and surgical operation experience problems, and reducing damage to limb tissues.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a puncture needle with an antibacterial coating. Background Art

[0002] The puncture needle is a medical device widely used in minimally invasive surgery, mainly used for tissue sampling and injection treatment of various organs such as kidneys, liver, lungs, breasts, thyroid, prostate, pancreas, testicles, uterus, ovaries, etc.;

[0003] The main functions of the puncture needle are two: one is to perform catheter drainage. For example, when pleural effusion or peritoneal effusion occurs in the human body, pus or exudate is extracted through the puncture needle, and then a drainage tube is inserted for drainage; the other is to remove a small amount of tissue for pathological examination or cytological examination, which is particularly important when diagnosing certain diseases such as tumors.

[0004] The puncture needle is controlled by the doctor's operating experience during limb puncture, and segmented puncture is performed according to the patient's weight. Reducing the number of punctures can reduce damage to limb tissues. However, the existing puncture needles do not have the function of assisting puncture, which is insufficient. Utility Model Content

[0005] (I) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a puncture needle with an antibacterial coating, which has the characteristics of quickly completing puncture, reducing tissue damage and preventing postoperative infection with antibacterial properties.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a puncture needle with an antibacterial coating, comprising a base with a guide channel and a catheter, wherein the outer periphery of the catheter is provided with a spring member connected to the base;

[0009] The puncture mechanism comprises a skin-attached pad connected to the spring member, the skin-attached pad is internally provided with an antibacterial sleeve penetrating the guide channel, the distal end of the antibacterial sleeve is provided with a guide pad, and an antibacterial puncture needle is clamped inside;

[0010] The limiting mechanism comprises an axle frame arranged on the base, the axle frame has a built-in rotating shaft, the outer wall of the rotating shaft is sleeved with a limiting rod, and the other end of the limiting rod abuts against the guide pad.

[0011] Preferably, the spring member is a deformable structure, and the combination of the skin-contacting pad and the guide pad moves as a whole as the spring member deforms.

[0012] Preferably, the end surfaces to which the antibacterial sleeve and the antibacterial puncture needle are attached are coated with an antibacterial coating.

[0013] Preferably, the rotation angle of the limiting rod is at least 90°.

[0014] Preferably, the positioning mechanism comprises a positioning groove seat arranged on the base and a positioning piece arranged on the guide pad, and the slotting specifications of the positioning groove seat match those of the positioning piece.

[0015] Preferably, the other end of the antibacterial sleeve is detachably connected to an interface end seat, and the interface end seat is coated with an antibacterial coating.

[0016] The above technical solution of the utility model has the following beneficial technical effects:

[0017] 1. When puncturing, the limit rod rotates out of the limit, cancels the compression of the spring part, and the spring part relaxes and resets, driving the antibacterial sleeve to slide in the catheter, assisting the antibacterial sleeve and the antibacterial needle to puncture the patient's limbs, and the puncture depth remains constant. According to the patient's weight, the remaining puncture distance can be supplemented by puncture, which solves the problem of multiple punctures in segments due to different patient weights and surgical operation experience problems, and reduces damage to limb tissues.

[0018] 2. The end surfaces of the antibacterial sleeve and the antibacterial needle are coated with an antibacterial coating, which can significantly reduce the risk of infection during medical treatment. The antibacterial coating simulates the endothelial surface, can prevent thrombosis and biological contamination, can effectively reduce the adsorption and activation of fibrinogen, and significantly reduce platelet adhesion and activation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the puncture needle resetting structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the antibacterial needle separation structure of the utility model.

[0022] Reference numerals:

[0023] 11. Base; 12. Catheter; 13. Spring member; 21. Skin-fitting pad; 22. Guide pad; 23. Antibacterial sleeve; 24. Antibacterial puncture needle; 31. Axle frame; 32. Rotating shaft; 33. Limit rod; 41. Positioning slot seat; 42. Positioning member; 5. Interface end seat. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0025] like Figure 1-3 As shown, the utility model provides a puncture needle with an antibacterial coating, comprising a base 11 with a guide channel and a catheter 12, and the outer periphery of the catheter 12 is provided with a spring member 13 connected to the base 11;

[0026] The puncture mechanism includes a skin-attached pad 21 connected to a spring member 13, wherein the skin-attached pad 21 has an antibacterial sleeve 23 penetrating the guide channel, a guide pad 22 is sleeved at the distal end of the antibacterial sleeve 23, and an antibacterial puncture needle 24 is clamped inside.

[0027] The limiting mechanism includes a shaft frame 31 disposed on the base 11 . The shaft frame 31 has a built-in rotating shaft 32 . The outer wall of the rotating shaft 32 is sleeved with a limiting rod 33 . The other end of the limiting rod 33 abuts against the guide pad 22 .

[0028] It should be noted that the spring member 13 is a deformable structure, and the combination of the skin-contacting pad 21 and the guide pad 22 as a whole moves with the deformation of the spring member 13; the spring member 13 is initially in a compressed state, and when the deformation is restored, the combination of the skin-contacting pad 21 and the guide pad 22 as a whole drives the antibacterial sleeve 23 to puncture the patient's limb.

[0029] In this embodiment, when puncturing, the tips of the antibacterial sleeve 23 and the antibacterial needle 24 are aligned with the puncture site, the base 11 is held, the limit of the limit mechanism is canceled, and the limit rod 33 rotates away from the guide pad 22 along the rotating shaft 32, and the guide pad 22 cancels the compression of the spring member 13, and the spring member 13 relaxes to the initial state. At this time, the combination of the skin-adhering pad 21 and the guide pad 22 drives the antibacterial sleeve 23 to slide in the catheter 12, and assists the antibacterial sleeve 23 and the antibacterial needle 24 to puncture the patient's limbs. The puncture force depends on the deformation force of the spring member 13 to reset, and the puncture depth is kept constant to meet the puncture requirements as much as possible;

[0030] According to the patient's weight, additional punctures can be performed for the remaining puncture distance, solving the problem of needing multiple punctures in segments due to different patient weights and surgical operation experience, and reducing damage to limb tissues.

[0031] The rotation angle of the limiting rod 33 is at least 90°, and it is necessary to ensure that the limiting rod 33 can be rotated to pop out of the clamping gap between the connection base 11 and the guide pad 22, and the length of the limiting rod 33 is equivalent to the puncture depth.

[0032] In order to limit the relaxation and reset distance of the spring member 13, further, the positioning mechanism includes a positioning groove seat 41 arranged on the base 11 and a positioning member 42 arranged on the guide pad 22, and the groove specifications of the positioning groove seat 41 match the positioning member 42; when the guide pad 22 moves toward the base 11, the antibacterial sleeve 23 slides along the inner cavity of the catheter 12 until the positioning member 42 and the positioning operation 42 are combined, and the reset of the spring member 13 is cancelled.

[0033] like Figure 3 As shown, the end surfaces to which the antibacterial sleeve 23 and the antibacterial needle 24 are attached are coated with an antibacterial coating; the risk of infection during medical treatment can be significantly reduced. The antibacterial coating simulates the endothelial surface, can prevent thrombosis and biological contamination, can effectively reduce the adsorption and activation of fibrinogen, and significantly reduce platelet adhesion and activation.

[0034] Furthermore, the other end of the antibacterial sleeve 23 is detachably connected to the interface end seat 5, and the interface end seat 5 is coated with an antibacterial coating, which can prevent bacteria from being contaminated from the interface end seat 5 when connecting other equipment.

[0035] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A puncture needle with an antibacterial coating, characterized in that: It comprises a base (11) with a guide channel and a conduit (12), wherein the outer periphery of the conduit (12) is sleeved with a spring member (13) connected to the base (11); The puncture mechanism comprises a skin-attaching pad (21) connected to the spring member (13), the skin-attaching pad (21) having an antibacterial sleeve (23) penetrating the guide channel, the distal end of the antibacterial sleeve (23) being sleeved with a guide pad (22), and an antibacterial puncture needle (24) being clamped inside; The limiting mechanism comprises a shaft frame (31) arranged on the base (11), the shaft frame (31) having a built-in rotating shaft (32), an outer wall of the rotating shaft (32) being sleeved with a limiting rod (33), and the other end of the limiting rod (33) abutting against the guide pad (22).

2. The puncture needle with antibacterial coating according to claim 1, characterized in that: The spring member (13) is a deformable structure, and the combination of the skin-contacting pad (21) and the guide pad (22) as a whole moves along with the deformation of the spring member (13).

3. The puncture needle with antibacterial coating according to claim 1, characterized in that: The end surfaces to which the antibacterial sleeve (23) and the antibacterial puncture needle (24) are attached are both coated with an antibacterial coating.

4. The puncture needle with an antibacterial coating according to claim 1, characterized in that: The rotation angle of the limiting rod (33) is at least 90°.

5. The puncture needle with antibacterial coating according to claim 1, characterized in that: The positioning mechanism comprises a positioning groove seat (41) arranged on the base (11) and a positioning piece (42) arranged on the guide pad (22), and the slotting specifications of the positioning groove seat (41) match those of the positioning piece (42).

6. The puncture needle with antibacterial coating according to claim 1, characterized in that: The other end of the antibacterial sleeve (23) is detachably connected to an interface end seat (5), and an antibacterial coating is coated inside the interface end seat (5).

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