Hemodialysis puncture needle
By designing a sliding protective sleeve and convenient operating structure in the hemodialysis puncture needle, the staff injury problem caused by the sharp tip of the puncture needle is solved, and safety and operation convenience are improved.
Patent Information
- Application Number
- CN202420836573.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-22
AI Technical Summary
The existing hemodialysis puncture needles are not protected after use, which can easily lead to injuries to staff due to sharp tips.
A hemodialysis puncture needle including a protective structure was designed. After the dialysis is completed, the protective sleeve can be slid to cover the steel needle tube to prevent sharp punctures, and the operation is more convenient through structures such as sliding slide rods and rotating rotary rods.
It effectively prevents the tip of the puncture needle from stabbing the staff after use, improves the safety of use, and simplifies the operation process of the protective sleeve.
Smart Images
Figure CN222445113U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hemodialysis puncture needles, in particular to a puncture needle. Background Art
[0002] Hemodialysis is one of the renal replacement therapies for patients with acute and chronic renal failure. It drains blood from the body to the outside of the body through a dialyzer composed of countless hollow fibers. The blood and an electrolyte solution (dialysate) containing electrolytes at similar concentrations to the body are exchanged inside and outside the hollow fibers through the principles of diffusion, ultrafiltration, adsorption and convection to remove metabolic waste from the body and maintain electrolyte and acid-base balance. At the same time, it removes excess water from the body and returns the purified blood. During the entire process, the puncture needle is usually a rigid tube with a sharp tip. It is an interventional radiology device that is mainly used for puncturing parts of the human body to collect human samples, inject drugs and gases, or serve as a channel for other devices to enter the body. Hemodialysis is usually performed using a puncture needle.
[0003] When using the current hemodialysis puncture needle, the staff often finds that the current hemodialysis puncture needle is mainly composed of a steel needle tube, a needle seat, a hose, a wing plate and a joint. It is a disposable item and is usually thrown away directly after use. Since the tip of the steel needle tube is very sharp, it is not protected after use, which can easily cause stabbing injuries to the staff. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and provides a hemodialysis puncture needle.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a hemodialysis puncture needle, comprising a steel needle tube, a needle seat is fixedly provided on the steel needle tube, one end of the steel needle tube is fixedly connected to a hose, the steel needle tube is communicated with the hose, a joint is threadedly connected to the hose, two wing plates are fixedly connected to the needle seat, the material of the wing plates is soft plastic, a protective structure is provided on the needle seat, the protective structure is mainly composed of a protective sleeve, and the protective sleeve is slidably inserted on the needle seat.
[0006] The effect achieved by the above components is: the staff pinches the two wing plates, inserts the steel needle tube into the patient's blood vessel, removes the joint, and then connects one end of the hose to the dialysis machine. After dialysis is completed, the protective cover can be slid so that the protective cover covers the steel needle tube to prevent the sharp tip of the steel needle tube from stabbing others, thereby avoiding the situation where the tip of the steel needle tube is very sharp and is not protected after use, which may easily cause the staff to be stabbed.
[0007] Preferably, a slide groove is provided on the needle seat, a slide rod is slidably connected in the slide groove, and the slide rod is fixedly connected to the protective sleeve.
[0008] The effect achieved by the above components is that the protective cover can be driven to slide by the sliding rod, making the operation more convenient.
[0009] Preferably, a fixing block is fixedly connected to the needle seat, and a rotating rod is rotatably connected to the fixing block.
[0010] The effect achieved by the above components is: when the protective sleeve protects the steel needle tube, the rotating rod can be rotated so that the rotating rod limits the sliding rod to prevent the protective sleeve from sliding back into the needle seat.
[0011] Preferably, a spring is fixedly connected to the slide rod, and one end of the spring is fixedly connected to the inner wall of the slide groove.
[0012] The effect achieved by the above-mentioned components is: when the protective sleeve protects the steel needle tube, the spring is in a contracted state. Therefore, when the steel needle tube needs to be used, when the rotating rod is rotated to release the limit on the sliding rod, the sliding rod slides under the action of the spring rebound force, thereby driving the protective sleeve to be retracted into the needle seat for easy use.
[0013] Preferably, a slot is provided on the sliding rod, and the slot is matched with the rotating rod.
[0014] The effect achieved by the above components is that the rotating rod is clamped in the clamping groove to enhance the limiting effect on the sliding rod.
[0015] Preferably, a limiting structure is provided on the wing plate, and the limiting structure is mainly composed of a limiting belt, and the limiting belt is fixedly connected to the wing plate, and a double-sided adhesive is fixedly connected to the limiting belt.
[0016] The effect achieved by the above components is: after the steel needle tube is inserted into the patient's blood vessel, the two double-sided adhesives can be adhered to the patient's body, thereby facilitating the positioning of the device and making it easier for the staff to perform the next step of operation.
[0017] Preferably, a protective sticker is attached to the double-sided adhesive tape, the length of the protective sticker is greater than the double-sided adhesive tape, and the protective sticker is non-sticky.
[0018] The effect achieved by the above components is: when not in use, the protective sticker is attached to the double-sided adhesive, and when it is needed, the protective sticker can be easily removed through the extra part of the protective sticker, making the operation more convenient.
[0019] Preferably, a first adhesive sticker is fixedly connected to the wing plate, and a second adhesive sticker is fixedly connected to the limiting belt.
[0020] The effect achieved by the above components is that when not in use, the first adhesive sticker and the second adhesive sticker are adhered together, which can limit the position of the limiting belt and prevent the two limiting belts from affecting the staff's acupuncture.
[0021] Compared with the prior art, the advantages and positive effects of the utility model are that, in the utility model, by setting a protective structure, the protective sleeve can be slid after dialysis is completed, so that the protective sleeve can cover the steel needle tube to prevent the sharp tip of the steel needle tube from stabbing others, and the protective sleeve can be driven to slide by the sliding slide rod, making the operation more convenient. When the protective sleeve protects the steel needle tube, the rotating rod can be rotated so that the rotating rod limits the sliding rod to prevent the protective sleeve from sliding back into the needle seat. When the protective sleeve protects the steel needle tube, the spring is in a contracted state. Therefore, when the steel needle tube needs to be used, when the rotating rod is rotated to release the limit on the sliding rod, the sliding rod slides under the action of the spring rebound force, and then drives the protective sleeve back into the needle seat, which is convenient for use. The rotating rod is stuck in the slot to enhance the limiting effect of the sliding rod, thereby avoiding the situation where the tip of the steel needle tube is very sharp and is not protected after use, which may easily cause stabbing of the staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A three-dimensional structural schematic diagram of a hemodialysis puncture needle is proposed for the utility model;
[0023] Figure 2 A three-dimensional structural schematic diagram of a hemodialysis puncture needle from another perspective is provided for the utility model;
[0024] Figure 3 A partial schematic diagram of a protective structure of a hemodialysis puncture needle proposed by the utility model;
[0025] Figure 4 The utility model provides a partial schematic diagram of a limiting structure of a hemodialysis puncture needle.
[0026] Legend: 1. Steel needle tube; 2. Needle seat; 3. Hose; 4. Connector; 5. Wing plate; 6. Protective structure; 61. Protective cover; 62. Slide groove; 63. Slide rod; 64. Spring; 65. Fixed block; 66. Rotating rod; 67. Slot; 7. Limiting structure; 71. Limiting belt; 72. Double-sided adhesive; 73. Protective sticker; 74. First adhesive sticker; 75. Second adhesive sticker. DETAILED DESCRIPTION
[0027] Embodiment 1, as Figure 1 As shown, a hemodialysis puncture needle comprises a steel needle tube 1, a needle seat 2 is fixedly sleeved on the steel needle tube 1, a hose 3 is fixedly connected to one end of the steel needle tube 1, the steel needle tube 1 is communicated with the hose 3, a connector 4 is threadedly connected to the hose 3, and two wing plates 5 are fixedly connected to the needle seat 2, and the material of the wing plates 5 is soft plastic.
[0028] Reference Figure 3 , a protective structure 6 is arranged on the needle seat 2, and the protective structure 6 is mainly composed of a protective sleeve 61, which is slidably inserted on the needle seat 2. The staff pinches the two wing plates 5, inserts the steel needle tube 1 into the patient's blood vessel, removes the connector 4, and then connects one end of the hose 3 to the dialysis machine. After the dialysis is completed, the protective sleeve 61 can be slid so that the protective sleeve 61 covers the steel needle tube 1 to prevent the sharp tip of the steel needle tube 1 from stabbing others, thereby avoiding the situation where the tip of the steel needle tube 1 is very sharp and is not protected after use, which may easily cause the staff to be stabbed. A sliding groove 62 is provided on the needle seat 2, and a sliding rod 63 is slidably connected in the sliding groove 62. The sliding rod 63 is fixedly connected to the protective sleeve 61, and the protective sleeve 61 can be driven to slide by sliding the sliding rod 63, making the operation more convenient. A fixed block 65 is fixedly connected to the needle seat 2, A rotating rod 66 is rotatably connected to the fixed block 65. When the protective sleeve 61 protects the steel needle tube 1, the rotating rod 66 can be rotated so that the rotating rod 66 limits the sliding rod 63 to prevent the protective sleeve 61 from sliding back into the needle seat 2. A spring 64 is fixedly connected to the sliding rod 63, and one end of the spring 64 is fixedly connected to the inner wall of the sliding groove 62. When the protective sleeve 61 protects the steel needle tube 1, the spring 64 is in a contracted state. Therefore, when the steel needle tube 1 needs to be used, when the rotating rod 66 is rotated to release the limit on the sliding rod 63, the sliding rod 63 slides under the action of the rebound force of the spring 64, and then drives the protective sleeve 61 to be retracted into the needle seat 2 for easy use. A card slot 67 is provided on the sliding rod 63, and the card slot 67 is adapted to the rotating rod 66. The rotating rod 66 is stuck in the card slot 67 to enhance the limiting effect on the sliding rod 63.
[0029] Reference Figure 2 and Figure 4 The wing plate 5 is provided with a limiting structure 7, which is mainly composed of a limiting belt 71, which is fixedly connected to the wing plate 5, and the limiting belt 71 is fixedly connected with a double-sided adhesive 72. After the steel needle tube 1 is inserted into the patient's blood vessel, the two double-sided adhesives 72 can be adhered to the patient, so as to facilitate the limiting of the device and facilitate the staff to carry out the next step of operation. The double-sided adhesive 72 is attached and connected with a protective sticker 73, and the length of the protective sticker 73 is greater than the double-sided adhesive 72. The protective sticker 73 has no stickiness. When not in use, the protective sticker 73 is adhered to the double-sided adhesive 72. When it is needed, the protective sticker 73 can be easily removed through the extra part of the protective sticker 73, making the operation more convenient. The wing plate 5 is fixedly connected with a first adhesive sticker 74, and the limiting belt 71 is fixedly connected with a second adhesive sticker 75. When not in use, the first adhesive sticker 74 and the second adhesive sticker 75 are adhered together, and the limiting belt 71 can be limited to prevent the two limiting belts 71 from affecting the staff's needle insertion.
[0030] Working principle: the staff pinches the two wing plates 5, inserts the steel needle tube 1 into the patient's blood vessel, removes the connector 4, and then connects one end of the hose 3 to the dialysis machine. After the dialysis is completed, the protective sleeve 61 can be slid so that the protective sleeve 61 covers the steel needle tube 1 to prevent the sharp tip of the steel needle tube 1 from stabbing others, thereby avoiding the situation where the sharp tip of the steel needle tube 1 is very sharp and is not protected after use, which may easily cause the staff to be stabbed. The protective sleeve 61 can be driven to slide by sliding the slide rod 63, making the operation more convenient. When the protective sleeve 61 protects the steel needle tube 1, the rotating rod 66 can be rotated so that the rotating rod 66 limits the slide rod 63 to prevent the protective sleeve 61 from sliding back into the needle seat 2. When the protective sleeve 61 protects the steel needle tube 1, the spring 64 is in a contracted state, so the steel needle needs to be used. When the needle tube 1 is inserted into the patient's blood vessel, the two double-sided adhesive tapes 72 can be adhered to the patient's body, so as to facilitate the limitation of the device and facilitate the next step of the staff. When not in use, the protective sticker 73 is adhered to the double-sided adhesive tape 72. When it is needed, the protective sticker 73 can be easily removed through the extra part of the protective sticker 73, making the operation more convenient. When not in use, the first adhesive tape 74 and the second adhesive tape 75 are adhered together, which can limit the limiting belt 71 to prevent the two limiting belts 71 from affecting the staff's needle insertion.
[0031] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.
Claims
1. A hemodialysis puncture needle, comprising a steel needle tube (1), characterized in that: The steel needle tube (1) is fixedly sleeved with a needle seat (2), one end of the steel needle tube (1) is fixedly connected with a hose (3), the steel needle tube (1) is in communication with the hose (3), a joint (4) is threadedly connected to the hose (3), two wing plates (5) are fixedly connected to the needle seat (2), the wing plates (5) are made of soft plastic, a protective structure (6) is provided on the needle seat (2), the protective structure (6) is mainly composed of a protective sleeve (61), and the protective sleeve (61) is slidably inserted on the needle seat (2).
2. The hemodialysis puncture needle according to claim 1, characterized in that: The needle seat (2) is provided with a sliding groove (62), a sliding rod (63) is slidably connected in the sliding groove (62), and the sliding rod (63) is fixedly connected to the protective sleeve (61).
3. The hemodialysis puncture needle according to claim 2, characterized in that: A fixing block (65) is fixedly connected to the needle seat (2), and a rotating rod (66) is rotatably connected to the fixing block (65).
4. The hemodialysis puncture needle according to claim 3, characterized in that: A spring (64) is fixedly connected to the slide rod (63), and one end of the spring (64) is fixedly connected to the inner wall of the slide groove (62).
5. The hemodialysis puncture needle according to claim 4, characterized in that: The sliding rod (63) is provided with a slot (67), and the slot (67) is adapted to fit the rotating rod (66).
6. The hemodialysis puncture needle according to claim 5, characterized in that: A limiting structure (7) is provided on the wing plate (5), the limiting structure (7) mainly comprising a limiting belt (71), the limiting belt (71) being fixedly connected to the wing plate (5), and a double-sided adhesive (72) being fixedly connected to the limiting belt (71).
7. The hemodialysis puncture needle according to claim 6, characterized in that: A protective sticker (73) is attached and connected to the double-sided adhesive tape (72); the length of the protective sticker (73) is greater than that of the double-sided adhesive tape (72); and the protective sticker (73) is non-sticky.
8. The hemodialysis puncture needle according to claim 7, characterized in that: A first adhesive sticker (74) is fixedly connected to the wing plate (5), and a second adhesive sticker (75) is fixedly connected to the limiting belt (71).