Structure for preventing puncture of infusion port needle

Abstract

The utility model relates to the technical field of medical instruments, in particular to a structure for preventing an infusion port needle from being punctured, which comprises a supporting tube and is characterized in that the lower end of the supporting tube is fixedly connected with two arc-shaped plates which are symmetrically arranged, the lower ends of the arc-shaped plates are fixedly connected with a pressing plate, and the lower end of the pressing plate is fixedly connected with a rubber pad. A needle cylinder sleeve is connected into the supporting pipe in a sliding mode. The needle cylinder sleeve comprises a containing cylinder, a containing groove with a conical bottom is formed in the containing cylinder, two pressing plates are fixedly connected to the lower end of the containing cylinder, and the containing cylinder is further connected into the supporting pipe in a sliding mode through an elastic assembly. The arc-shaped plate is used for holding, the needle head can be prevented from stabbing an injection person, the needle head can be limited through the long groove and the pressing plate, the needle head is prevented from being bent, the needle cylinder sleeve pressing plate is rotated to be clamped in the clamping groove for positioning, injection is facilitated, the needle head can be directly popped out through the spring after injection, and the needle head can be safely pulled out.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a structure for preventing port-of-care needle puncture injuries. Background Technology

[0002] An infusion port, also known clinically as a PORT, is a specialized infusion device inserted into the body to reduce the irritation of drugs on a patient's blood vessels.

[0003] A search of Chinese patent publication number CN217187270U reveals a positioning device for preventing needlestick injuries in infusion ports.

[0004] The above technical solution includes a puncture needle and a tray. A track distributed along the diameter direction is provided inside the tray. The track includes a hollow cylinder and two transparent hollow tubes. The hollow cylinder is concentrically positioned at the center of the tray, and the two transparent hollow tubes are symmetrically positioned 180 degrees on both sides of the hollow cylinder. The inner end of each transparent hollow tube is fixed to the outer wall of the hollow cylinder, and the outer end is fixed to the tray. The puncture needle is vertically inserted into the hollow cylinder. Each transparent hollow tube contains a flexible, bendable pull rod. An opening is provided at the upper part of the transparent hollow tube near its inner end, and one end of the pull rod extends through the opening and connects to the handle of the puncture needle. Indicating scale lines are provided on the surface of the transparent hollow tube, and a limiting end is provided at the end of the pull rod inside the transparent hollow tube to prevent it from dislodging. This utility model has an ingenious structure and reasonable design, accurately positioning the puncture center, effectively avoiding needlestick injuries, and is safe and reliable to use.

[0005] However, in the above-mentioned solution, the technology requires careful pressing at the center vertically during use; otherwise, it may cause the needle to bend or puncture the infusion port. The device needs to come into direct contact with the medication and the patient, and is a disposable item or requires disinfection treatment, resulting in high usage costs.

[0006] Therefore, we propose a structure to prevent port-a-cath needle puncture injuries. Summary of the Invention

[0007] The present invention aims to solve the technical problems existing in the prior art and provide a structure to prevent needle puncture injuries at infusion ports.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a structure for preventing needle puncture at an infusion port, comprising a support tube, characterized in that: two symmetrically arranged arc-shaped plates are fixedly connected to the lower end of the support tube, a pressing plate is fixedly connected to the lower end of the arc-shaped plates, a rubber pad is fixedly connected to the lower end of the pressing plate, and a syringe sleeve is slidably connected inside the support tube;

[0009] A syringe sleeve, comprising a placement tube, wherein the placement tube has a conical bottom placement groove, and two pressure plates are fixedly connected to the lower end of the placement tube. The placement tube is also slidably connected to a support tube via an elastic component.

[0010] Preferably, the elastic component includes a spring, one end of which is fixedly connected to a long groove, and the upper end of the spring is fixedly connected to a connecting plate that abuts against the pressure plate. A slot is connected to one side of the long groove.

[0011] Preferably, both the long groove and the slot are formed on the inner wall of the support tube, and the pressure plate can be rotated into the slot.

[0012] Preferably, the lower end of the syringe sleeve is connected to a fixing component, and the syringe sleeve is connected to the fixing component.

[0013] Preferably, the fixing component includes an injection cylinder with an injection groove inside and a threaded block on the outer side of the lower end of the injection cylinder.

[0014] Preferably, the lower end of the syringe is threadedly connected to a needle cap, the needle cap having a groove inside, and the sidewall of the groove being connected to a threaded groove.

[0015] Preferably, the lower end of the slot is connected to a fixing groove, and the lower end of the fixing groove is connected to a needle groove.

[0016] This invention provides a structure to prevent needle puncture injuries at infusion ports, which has the following improvements and advantages compared with the prior art:

[0017] (1) This utility model employs a spring and a slot. Two symmetrically arranged arc-shaped plates are fixedly connected to the lower end of the support tube. A pressing plate is fixedly connected to the lower end of each arc-shaped plate, and a rubber pad is fixedly connected to the lower end of each pressing plate. A syringe sleeve is slidably connected inside the support tube. The syringe sleeve includes a placement cylinder with a conical-bottomed placement groove. Two pressure plates are fixedly connected to the lower end of the placement cylinder. The placement cylinder is also slidably connected to the support tube via an elastic component. The elastic component includes a spring, one end of which is fixedly connected to a long groove. A connecting plate that abuts against the pressure plate is fixedly connected to the upper end of the spring. One side of the long groove is connected to… The syringe has a slot, and both the long slot and the slot are located on the inner wall of the support tube. The pressure plate can rotate into the slot. A spring is provided, and pressing the spring moves the syringe downward, allowing the needle to extend. An arc-shaped plate is provided for gripping, which can prevent the needle from pricking the injector. The pressure plate contacts the skin, which can both fix the device and reduce the pressure sensation for the patient. The long slot and the pressure plate can limit the needle and prevent it from bending. Rotating the syringe sleeve and the pressure plate to lock the slot facilitates injection. The spring can eject the needle directly after injection, allowing for safe removal of the needle.

[0018] (2) This utility model uses an injection cylinder and a needle cap to fix the injection head. The injection cylinder has an injection groove inside and a threaded block is provided on the outer side of the lower end of the injection cylinder. The lower end of the injection cylinder is threadedly connected to the needle cap. The needle cap has a slot inside and a threaded groove is connected to the side wall of the slot. The lower end of the slot is connected to a fixing groove and the lower end of the fixing groove is connected to a needle groove. By installing the infusion cylinder in the syringe sleeve, the injection head of the infusion cylinder extends out of the injection cylinder. Then, the needle cap is installed and the needle cap is fitted over the injection head to fix the injection head. This can ensure stable removal of the injection head and avoid direct contact between the device and the medicine and the patient. It can be reused, reduces the cost of use, and is easy to promote and use. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 2 This is a three-dimensional schematic diagram of the structure of the syringe sleeve in this utility model;

[0022] Figure 3 This is a three-dimensional structural schematic diagram of the elastic component in this utility model;

[0023] Figure 4 This is a schematic plan view of the fixing component in this utility model.

[0024] Legend:

[0025] 10. Support tube; 11. Arc plate; 12. Pressing plate; 13. Rubber pad; 20. Syringe sleeve; 21. Placement tube; 22. Pressure plate; 23. Placement cavity; 30. Elastic component; 31. Long groove; 32. Spring; 33. Connecting plate; 34. Slot; 40. Fixing component; 41. Injection cartridge; 42. Injection groove; 43. Threaded block; 44. Needle cap; 45. Threaded groove; 46. Slot; 47. Fixing groove; 48. Needle groove. Detailed Implementation

[0026] The invention will now be further described with reference to the accompanying drawings and specific embodiments: Example

[0027] Please see Figures 1 to 3Embodiment 1 describes a device including a support tube 10 that provides external support. Two symmetrically arranged arc-shaped plates 11 are fixedly connected to the lower end of the support tube 10. The arc-shaped plates 11 are used for holding the device and preventing needle punctures. A pressing plate 12 is fixedly connected to the lower end of the arc-shaped plates 11. The pressing plate 12 secures the device and reduces the pressure sensation for the patient. A rubber pad 13 is fixedly connected to the lower end of the pressing plate 12. The rubber pad 13 improves the contact feel and increases friction. A syringe sleeve 20 is slidably connected inside the support tube 10. The syringe sleeve 20 includes a placement tube 21 for holding the infusion cartridge. The placement tube 21 has a conical-bottomed placement groove that matches the infusion cartridge. Two pressure plates 22 are fixedly connected to the lower end of the placement tube 21 for squeezing. The spring 32 is used for positioning, and the placement cylinder 21 is also slidably connected to the support tube 10 through the elastic component 30. The elastic component 30 is used to pull out the needle. The elastic component 30 includes a spring 32, which provides elastic potential energy. One end of the spring 32 is fixedly connected to the long groove 31, which can limit the movement. The upper end of the spring 32 is fixedly connected to a connecting plate 33 that abuts against the pressure plate 22. The connecting plate 33 always abuts against the pressure plate 22. One side of the long groove 31 is connected to a slot 34. The length of the long groove 31 ensures that the pressure plate 22 can be locked without the connecting plate 33 and the pressure plate 22 disengaging. The long groove 31 and the slot 34 are both opened on the inner wall of the support tube 10. The pressure plate 22 can rotate into the slot 34 to position the syringe sleeve 20.

[0028] In this embodiment, the infusion cylinder is inserted into the syringe sleeve 20 and then fixed using the fixing component 40. During injection, the pressing plate 12 is placed outside the infusion port, and the placement cylinder 21 is pressed. The pressing plate 22 of the placement cylinder 21 slides in the long groove 31 and squeezes the spring 32. The placement cylinder 21 moves down, and the needle also moves down. After the needle is injected into the infusion port, the spring 32 is also compressed to its limit. Then the placement cylinder 21 is rotated, and the pressing plate 22 of the placement cylinder 21 rotates into the slot 34, and then injection can be performed. After the injection is completed, the placement cylinder 21 is rotated, the pressing plate 22 comes out of the placement cylinder 21, the spring 32 is unrestrained and resets, the placement cylinder 21 is ejected, and the needle is pulled out. This can avoid the needle from pricking the injector and also reduces the difficulty of using this device, making it very easy to use. Example

[0029] Please see Figure 1 and Figure 4Example 2 describes a syringe sleeve 20 with a fixing component 40 connected to its lower end. The syringe sleeve 20 and the fixing component 40 are connected to facilitate the extension of the infusion cartridge. The fixing component 40 includes an injection cylinder 41 with an injection groove 42 inside. A threaded block 43 is provided on the outer side of the lower end of the injection cylinder 41. The injection cylinder 41 is used to fix the injection head of the infusion cartridge. The injection groove 42 is used for the injection head to extend. A needle cap 44 is threadedly connected to the lower end of the injection cylinder 41. The needle cap 44 is threadedly connected to the injection cylinder 41 to fix the needle. A slot 46 is provided inside the needle cap 44 to place the injection cylinder 41 and its tail. A threaded groove 45 is connected to the side wall of the slot 46. The threaded groove 45 and the threaded block 43 are used to hold and fix the needle. A fixing groove 47 is connected to the lower end of the slot 46 to fix the needle body. A needle groove 48 is connected to the lower end of the fixing groove 47 for the needle to extend.

[0030] In this embodiment, the infusion cartridge is placed inside the syringe sleeve 20, the injection head of the infusion cartridge extends out of the injection groove 42, and then the needle is installed on the injection head. Then, a needle cap 44 is attached to the injection head, the needle extends out of the needle groove 48, the needle body is stuck in the fixing groove 47, and the needle tail is clamped in the syringe 41 and the needle cap 44. Then, the syringe 41 and the needle cap 44 are rotated to fix them. This can fix the syringe and avoid direct contact between the medicine or patient's body fluid and the device. The device can be reused, the disinfection standard is low, and the usage cost is greatly reduced.

Claims

1. A structure for preventing needle puncture injuries at infusion ports, comprising a support tube (10), characterized in that: The lower end of the support tube (10) is fixedly connected to two symmetrically arranged arc-shaped plates (11), the lower end of the arc-shaped plates (11) is fixedly connected to a pressing plate (12), the lower end of the pressing plate (12) is fixedly connected to a rubber pad (13), and a syringe sleeve (20) is slidably connected inside the support tube (10). Syringe sleeve (20), the syringe sleeve (20) includes a placement tube (21), the placement tube (21) is provided with a placement groove with a conical bottom, the lower end of the placement tube (21) is fixedly connected to two pressure plates (22), and the placement tube (21) is also slidably connected to the support tube (10) through an elastic component (30).

2. The structure for preventing needle pricks at infusion ports according to claim 1, characterized in that: The elastic component (30) includes a spring (32), one end of which is fixedly connected to a long groove (31), and the upper end of the spring (32) is fixedly connected to a connecting plate (33) that abuts against the pressure plate (22). A slot (34) is connected to one side of the long groove (31).

3. The structure for preventing needle stick injuries at infusion ports according to claim 2, characterized in that: The long groove (31) and the slot (34) are both opened on the inner wall of the support tube (10), and the pressure plate (22) can be rotated into the slot (34).

4. The structure for preventing needle pricks at infusion ports according to claim 1, characterized in that: The lower end of the syringe sleeve (20) is connected to a fixing component (40), and the syringe sleeve (20) is connected to the fixing component (40).

5. The structure for preventing needle pricks at infusion ports according to claim 4, characterized in that: The fixing component (40) includes an injection cylinder (41), an injection groove (42) is provided inside the injection cylinder (41), and a threaded block (43) is provided on the outer side of the lower end of the injection cylinder (41).

6. The structure for preventing needle pricks at infusion ports according to claim 5, characterized in that: The lower end of the syringe (41) is threadedly connected to a needle cap (44), and a slot (46) is provided inside the needle cap (44). The side wall of the slot (46) is connected to a threaded groove (45).

7. The structure for preventing needle pricks at infusion ports according to claim 6, characterized in that: The lower end of the slot (46) is connected to a fixing slot (47), and the lower end of the fixing slot (47) is connected to a needle slot (48).

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