A hemodialysis indwelling needle with a pipe clamp
The hemodialysis indwelling needle with built-in tubing clamp automatically clamps the infusion tubing, solving the problem of bleeding caused by the indwelling needle being pulled when not in use, thus improving patient comfort and the applicability of the infusion tubing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA JAPAN FRIENDSHIP HOSPITAL
- Filing Date
- 2025-02-21
- Publication Date
- 2026-07-03
AI Technical Summary
The infusion tubing of existing indwelling needles is easily pulled by the patient's movement when not in use, which can cause bleeding at the puncture site and cause discomfort to the patient.
A hemodialysis indwelling needle with a built-in tubing clamp was designed. The excess infusion tubing is bent and clamped by a clamping device. The infusion tubing is automatically clamped and fixed by the cooperation of a connecting block, clamping plate, telescopic ring and spring.
It effectively prevents the infusion tubing from being pulled during patient movement, avoids bleeding at the indwelling needle puncture site, improves patient comfort, and is suitable for infusion tubing of different diameters.
Smart Images
Figure CN224441893U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical supplies technology, specifically a hemodialysis indwelling needle with a built-in tubing clamp. Background Technology
[0002] Indwelling needles are medical devices that are retained during intravenous infusion. The use of indwelling needles can reduce the pain and fear of injections caused by repeated venous punctures in children, alleviate the anxiety of parents, facilitate clinical medication administration, and facilitate the administration of medications for emergency and critically ill patients. It can also reduce the workload of nurses and reduce the pain of children. Therefore, indwelling needles are widely used in clinical practice. When dealing with children, a special group of patients, the length of time the indwelling needle is left in place and the comfort of the child are the most important issues for nurses and parents. These are also the hallmarks of successful use of indwelling needles and the prerequisites for their promotion.
[0003] For example, a type of indwelling needle with anti-backflow designation, CN221332207U, includes an indwelling needle body connected to an infusion tubing. One end of the infusion tubing is equipped with a positive pressure connector for connection to an infusion set. An elastic water balloon is located below the positive pressure connector and is integrally connected to the infusion tubing. Single-hand clamps I and II are respectively located on both sides of the elastic water balloon to control fluid flow. This anti-backflow indwelling needle effectively prevents backflow, avoids catheter blockage, extends service life, reduces patient anxiety, and allows for easy needle sealing. It also allows for direct observation of the negative pressure status of the indwelling needle, greatly improving ease of use.
[0004] The aforementioned patent can effectively prevent backflow of blood. In actual use, the reserved infusion tube is generally long. When infusion is not needed, the long infusion tube is in a loose state. When the patient moves, it may pull on the infusion tube. Pulling on the infusion tube will cause pain and bleeding at the puncture site of the indwelling needle. In actual use, it will still cause discomfort to the patient.
[0005] Therefore, we proposed a hemodialysis indwelling needle with a built-in tubing clamp to solve the problems mentioned above. Summary of the Invention
[0006] The purpose of this invention is to provide a hemodialysis indwelling needle with a built-in tubing clamp to solve the problem mentioned in the background art that, in actual use, the infusion tubing is generally long. When infusion is not needed, the long infusion tubing is in a loose state, which may be pulled by the patient when moving. The pulling of the infusion tubing will cause pain and bleeding at the puncture site of the indwelling needle, which will still cause discomfort to the patient in actual use.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a hemodialysis indwelling needle with a built-in tubing clamp, comprising an indwelling needle body and an infusion tube fixedly connected to the side of the indwelling needle body, an infusion tee fixedly connected to one end of the infusion tube, a movable sleeve slidably connected to the infusion tube, a connecting rod fixedly installed on the side wall of the movable sleeve, and a wire clamping device installed at one end of the connecting rod.
[0008] Preferably, the wire clamping device includes a connecting block rotatably mounted on the side wall of the connecting rod, the connecting block having a groove, and a movable block slidably mounted in the groove.
[0009] Preferably, a clamping plate is fixedly installed at one end of the movable block, and a telescopic ring is fixedly installed at the other end of the movable block, with one end of the telescopic ring being fixedly connected to the side wall of the connecting block.
[0010] Preferably, a plurality of springs are fixedly installed at equal intervals between the inner wall of the telescopic ring and the side wall of the clamping plate, and the plurality of springs are equally spaced on both sides of the movable block.
[0011] Preferably, a plurality of clamping grooves are provided between the connecting block and the clamping plate, and the plurality of clamping grooves have different diameters.
[0012] Preferably, the connecting block and the clamping plate are in contact.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. When using this device to implant an indwelling needle in a patient, the indwelling needle body can be inserted into the patient's vein first, and then the indwelling needle body can be attached and fixed to the patient's body surface with tape. Since the patient does not need infusion all the time, when it is not in use, the infusion tube is long. The excess infusion tube can be bent and clamped by the clamping device to prevent the indwelling needle body from being pulled by the infusion tube when the patient moves. When using this hemodialysis indwelling needle with built-in tubing clamp, the excess infusion tube can be folded and fixed by the clamping device to prevent the indwelling needle body from being pulled by the patient during movement and causing bleeding.
[0015] 2. With the cooperation of the connecting block, clamp, clamping groove, telescopic ring, movable block, sliding groove, and spring, after the indwelling needle body is glued and fixed to the patient's body surface, the infusion tube is clamped and stored according to the current needs. When folding and storing the infusion tube, the telescopic ring can be pushed towards the connecting block first. When the telescopic ring is pushed, it causes the movable block to slide along the sliding groove. When the movable block moves, it causes the clamp to move. At this time, the clamp moves away from the connecting block, and the gap between the two becomes larger, so the infusion tube can be placed into the clamping groove. After placement, the telescopic ring is released, and under the action of multiple springs, the clamp will automatically be pulled back to the position of being in contact with the connecting block, thus achieving clamping and fixing of the infusion tube. When infusion is needed, the telescopic ring is pressed again to release the clamped and stored infusion tube. This device can achieve the opening and closing of the clamping device by pushing the telescopic ring. It is suitable for clamping and fixing infusion tubes of various diameters. Through the clamping grooves of different inner diameters, the infusion tube can be fixed while ensuring normal infusion. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the overall cross-sectional three-dimensional structure of this utility model;
[0018] Figure 3 This is a three-dimensional structural diagram of the wire clamping device of this utility model;
[0019] Figure 4 This is a cross-sectional three-dimensional structural diagram of the wire clamping device of this utility model.
[0020] In the diagram: 1. Indwelling needle body; 2. Infusion tubing; 3. Movable sleeve; 31. Connecting rod; 4. Infusion tee; 5. Clamping device; 51. Connecting block; 52. Clamping plate; 53. Clamping groove; 54. Telescopic ring; 55. Movable block; 56. Slide groove; 57. Spring. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Example 1: Please refer to Figures 1-3A hemodialysis indwelling needle with a built-in tubing clamp includes an indwelling needle body 1 and an infusion tube 2 fixedly connected to the side of the indwelling needle body 1. One end of the infusion tube 2 is fixedly connected to an infusion tee 4. A movable sleeve 3 is slidably connected to the infusion tube 2. A connecting rod 31 is fixedly installed on the side wall of the movable sleeve 3. A wire clamping device 5 is installed at one end of the connecting rod 31.
[0023] In this embodiment: When using this device to implant an indwelling needle into a patient, the indwelling needle body 1 can be inserted into the patient's vein first, and then the indwelling needle body 1 can be attached and fixed to the patient's body surface with tape. Since the patient does not need infusion all the time, when it is not needed, the reserved infusion tube 2 is relatively long. The excess infusion tube 2 can be bent and clamped by the clamping device 5 to prevent the infusion tube 2 from being pulled and causing bleeding at the indwelling needle body 1 when the patient moves. When using this hemodialysis indwelling needle with built-in tubing clamp, the excess infusion tube 2 can be folded and fixed by the clamping device 5 to prevent the indwelling needle body 1 from being pulled and causing bleeding during the patient's movement.
[0024] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figures 2-4 The clamping device 5 includes a connecting block 51 rotatably mounted on the side wall of the connecting rod 31. A groove 56 is provided on the connecting block 51, and a movable block 55 is slidably mounted in the groove 56. The movable block 55 is used to connect the clamping plate 52 and the telescopic ring 54.
[0025] A clamping plate 52 is fixedly installed at one end of the movable block 55, and a telescopic ring 54 is fixedly installed at the other end of the movable block 55. One end of the telescopic ring 54 is fixedly connected to the side wall of the connecting block 51. The clamping plate 52 and the telescopic ring 54 are connected through the movable block 55 and are movably installed on the connecting block 51.
[0026] Several springs 57 are fixedly installed at equal intervals on both sides of the inner wall of the telescopic ring 54 and the side wall of the clamping plate 52. The springs 57 are equally spaced on both sides of the movable block 55. The springs 57 can pull the clamping plate 52 to fit against the connecting block 51 when there is no external force in the initial state, and the telescopic ring 54 is in the extended state.
[0027] Multiple clamping grooves 53 are provided between the connecting block 51 and the clamping plate 52. The multiple clamping grooves 53 have different diameters. The clamping grooves 53 of different diameters can be used to clamp and fix various infusion tubes 2 of different diameters, so as to prevent them from affecting normal infusion during clamping.
[0028] The connecting block 51 and the clamping plate 52 are in contact, and the connecting block 51 and the clamping plate 52 are initially attached together.
[0029] In this embodiment: After the indwelling needle body 1 is attached and fixed to the patient's body surface, the infusion tube 2 is clamped and stored according to current needs. When folding and storing the infusion tube 2, the telescopic ring 54 can be pushed towards the connecting block 51 first. When the telescopic ring 54 is pushed, it causes the movable block 55 to slide along the slide groove 56. When the movable block 55 moves, it causes the clamping plate 52 to move. At this time, the clamping plate 52 moves away from the connecting block 51, and the gap between the two becomes larger. The infusion tube 2 can then be placed into the clamping groove 53. After placement, it can be loosened. Under the action of multiple springs 57, the telescopic ring 54 can automatically pull the clamping plate 52 back to the position where it fits against the connecting block 51, thereby clamping and fixing the infusion tube 2. When infusion is needed, pressing the telescopic ring 54 again will release the clamped infusion tube 2. This device can open and close the clamping device 5 by pushing the telescopic ring 54. It is applicable to clamping and fixing infusion tubes 2 of various diameters. The clamping grooves 53 with different inner diameters can fix the infusion tube 2 while ensuring its normal infusion.
[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A hemodialysis indwelling needle with a built-in tubing clamp, comprising an indwelling needle body (1) and an infusion tubing (2) fixedly connected to the side of the indwelling needle body (1), characterized in that: One end of the infusion tube (2) is fixedly connected to an infusion tee (4), and a movable sleeve (3) is slidably connected to the infusion tube (2). A connecting rod (31) is fixedly installed on the side wall of the movable sleeve (3), and a wire clamping device (5) is installed on one end of the connecting rod (31).
2. The hemodialysis indwelling needle with a tube clamp according to claim 1, characterized in that: The clamping device (5) includes a connecting block (51) rotatably mounted on the side wall of the connecting rod (31), and a groove (56) is provided on the connecting block (51), and a movable block (55) is slidably mounted in the groove (56).
3. The hemodialysis indwelling needle with a tube clamp according to claim 2, characterized in that: One end of the movable block (55) is fixedly installed with a clamping plate (52), and the other end of the movable block (55) is fixedly installed with a telescopic ring (54). One end of the telescopic ring (54) is fixedly connected to the side wall of the connecting block (51).
4. The hemodialysis indwelling needle with a tube clamp according to claim 3, characterized in that: Several springs (57) are fixedly installed at equal intervals between the inner wall of the telescopic ring (54) and the side wall of the clamping plate (52), and the several springs (57) are equidistantly arranged on both sides of the movable block (55).
5. The hemodialysis indwelling needle with a built-in needle clamp according to claim 4, characterized in that: Multiple clamping grooves (53) are provided between the connecting block (51) and the clamping plate (52), and the multiple clamping grooves (53) have different diameters.
6. The hemodialysis indwelling needle with a built-in tube clamp according to claim 5, characterized in that: The connecting block (51) and the clamping plate (52) are in contact.