Infusion port needle positioning device

By designing an infusion port needle positioning device with an adjustment and fixing mechanism, the problem of inaccurate subcutaneous positioning of infusion ports was solved, enabling flexible adjustment and precise positioning of the butterfly needle, thus improving the convenience and safety of operation.

CN223615210UActive Publication Date: 2025-12-02THE THIRD XIANGYA HOSPITAL OF CENT SOUTH UNIV
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Patent Information

Application Number
CN202422601173.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-28
Publication Date
2025-12-02
Estimated Expiration
2034-10-28

AI Technical Summary

Technical Problem

Existing infusion ports are difficult to accurately locate the injection site after being implanted under the skin, resulting in inconvenience in operation.

Method used

A port-of-care needle positioning device was designed. By combining an adjustment mechanism and a fixing mechanism, the device enables flexible adjustment and precise positioning of the butterfly needle. It includes a spring-driven moving plate and a threaded fixing structure to assist butterfly needles of different sizes in accurately inserting into the port-of-care.

Benefits of technology

This improves the flexibility and precision of the device, ensuring that the butterfly needle can be accurately inserted into the infusion port, reducing the risk of infection, and improving the convenience and safety of operation.

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Abstract

The utility model relates to the field of medical auxiliary instruments, and discloses an infusion port needle positioning device which comprises a device body, fixing mechanisms are fixedly arranged on the two sides of the upper end of the device body, connecting blocks are fixedly arranged on the two sides of the middle of the lower end of the device body, and adjusting mechanisms are fixedly arranged on the two sides of the middle of the device body. According to the device, through the design of the adjusting mechanism, when the device is used, the adjusting mechanism stretches out and draws back through compression of a spring and drives a first moving plate and a second moving plate to move, when the second moving plate moves, a moving column and a second connecting plate can be driven to move, and therefore the overall height of the device body is adjusted; and after adjustment is completed, the bolt holes are sleeved with the fixing bolts in a threaded mode, the adjusted device body can be positioned and fixed, and therefore the overall flexibility of the device is effectively improved.
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Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary devices, and in particular to a positioning device for infusion port needles. Background Technology

[0002] A port-a-catheter, also known as a venous port-a-catheter, is a fully implantable central venous catheter system or a fully implantable drug infusion device. It mainly consists of an injection port for puncture and a venous catheter. It can provide a safe, convenient, aesthetically pleasing, and long-term vascular access for patients who need long-term chemotherapy drugs, blood transfusions and blood sample collection, long-term parenteral nutrition, or long-term infusion for chronic diseases.

[0003] After commonly used infusion ports are implanted under the skin, they are difficult to observe because they are located under the skin, making it difficult for doctors to determine whether the injection position is accurate, causing inconvenience. Therefore, those skilled in the art have provided an infusion port placement and positioning device to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an infusion port needle positioning device. Through the design of the adjustment mechanism, the device can assist with butterfly needles of different sizes, thereby effectively increasing the overall flexibility of the device. Through the design of the fixing mechanism, the first positioning block and the second positioning block, the butterfly needle can be accurately inserted into the infusion port, effectively increasing the accuracy of the device.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An infusion port needle positioning device includes a device body, with fixing mechanisms fixedly installed on both sides of the upper end of the device body, connecting blocks fixedly installed on both sides of the middle position of the lower end of the device body, and adjusting mechanisms fixedly installed on both sides of the middle part of the device body.

[0007] Both of the fixing mechanisms include a first fixing block, a pressing plate, and a second fixing block. A connecting column is fixedly installed on the upper end of each of the two first fixing blocks. Both of the adjusting mechanisms include a fixing column and a moving column. A spring is fixedly installed inside each of the two fixing columns. A first moving plate is fixedly installed on the upper end of each of the two springs. A second moving plate is fixedly installed on the lower end of each moving column.

[0008] Furthermore, the main body of the device includes a first connecting plate and a second connecting plate. An adhesive piece is fixedly disposed at the lower end of the first connecting plate, and the first connecting plate and the second connecting plate are connected by an adjustment mechanism.

[0009] Furthermore, both pressing plates are fixedly sleeved on the outer surface of the connecting column, and both second fixing blocks are threadedly sleeved on the upper end of the connecting column.

[0010] Furthermore, a sponge block is attached and fixed to the lower end of the main body of the device.

[0011] Furthermore, a first positioning block is fixedly provided at the middle position of the upper end of the main body of the device, and a second positioning block is fixedly provided at the middle position of the lower end of the main body of the device.

[0012] Furthermore, both of the first movable plates are fixedly connected to the second movable plate, and multiple bolt holes are provided on one side of both second movable plates and the movable column.

[0013] Furthermore, both of the movable columns are slidably disposed inside the fixed column.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model proposes an infusion port needle positioning device. Through the design of the adjustment mechanism, the adjustment mechanism extends and retracts under spring pressure during use, driving the first and second moving plates to move. When the second moving plate moves, it can drive the moving column and the second connecting plate to move, thereby realizing the adjustment of the overall height of the device body. This assists the insertion of butterfly needles of different lengths into the infusion port. After the adjustment is completed, the device body can be positioned and fixed by threading the fixing bolts in the bolt holes, thereby effectively increasing the overall flexibility of the device.

[0016] 2. The present invention proposes an infusion port needle positioning device. Through the design of the fixing mechanism, the fixing mechanism can be installed on the upper end of the second connecting plate by the first fixing block during use. The setting of the pressing plate presses the butterfly wing to squeeze and fix the butterfly wing needle. At the same time, the needle can be inserted into the first positioning block and the second positioning block, thereby achieving the positioning and fixing of the needle and guiding the needle. This facilitates the accurate insertion of the butterfly wing needle into the infusion port, effectively increasing the accuracy of the device. Attached Figure Description

[0017] Figure 1 This is a first axonometric view of the present invention;

[0018] Figure 2 This is a second axonometric view of the present invention;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4 This is an enlarged view of section A of this utility model.

[0021] Legend:

[0022] 1. Main body of the device; 2. Fixing mechanism; 3. First positioning block; 4. Connecting block; 5. Sponge block; 6. Second positioning block; 7. Adjustment mechanism; 101. Adhesive component; 102. First connecting plate; 103. Second connecting plate; 201. First fixing block; 202. Pressing plate; 203. Connecting column; 204. Second fixing block; 701. Spring; 702. Fixing column; 703. First moving plate; 704. Second moving plate; 705. Moving column; 706. Bolt hole. Detailed Implementation

[0023] 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.

[0024] Reference Figure 1-4 An embodiment of this utility model provides: an infusion port needle positioning device, including a device body 1, fixing mechanisms 2 fixedly arranged on both sides of the upper end of the device body 1, connecting blocks 4 fixedly arranged on both sides of the middle position of the lower end of the device body 1, adjusting mechanisms 7 fixedly arranged on both sides of the middle part of the device body 1, a sponge block 5 pasted and fixedly attached to the lower end of the device body 1, a first positioning block 3 fixedly arranged at the middle position of the upper end of the device body 1, and a second positioning block 6 fixedly arranged at the middle position of the lower end of the device body 1.

[0025] Specifically, the main body 1 of the device connects and fixes the various components of the device. The fixing mechanism 2 positions and fixes the butterfly needle, thus preventing it from loosening during use. The first positioning block 3 and the second positioning block 6 work together to assist in positioning the butterfly needle, making it easy to accurately insert the butterfly needle into the infusion port. The connecting block 4 restricts the sponge block 5, which absorbs exudate, effectively preventing infection in the patient. The adjustment mechanism 7 allows for adjustment of the overall height of the main body 1, enabling the device to be used with butterfly needles of different sizes.

[0026] Reference Figure 1 , Figure 2The main body 1 of the device includes a first connecting plate 102 and a second connecting plate 103. An adhesive piece 101 is fixedly installed at the lower end of the first connecting plate 102. The first connecting plate 102 and the second connecting plate 103 are connected by an adjustment mechanism 7. Both fixing mechanisms 2 include a first fixing block 201, a pressing plate 202 and a second fixing block 204. A connecting post 203 is fixedly installed at the upper end of each of the two first fixing blocks 201. The two pressing plates 202 are fixedly sleeved on the outer surface of the connecting post 203. The two second fixing blocks 204 are threadedly sleeved on the upper end of the connecting post 203.

[0027] Specifically, the main body 1 of the device works in conjunction with the first connecting plate 102 and the second connecting plate 103 to ensure the stability of the main body 1 during use. The main body 1 of the device can be attached to the patient's body by the adhesive piece 101. When in use, the fixing mechanism 2 can be installed on the second connecting plate 103 by the first fixing block 201. The pressing plate 202 can be fixed by the connecting column 203. The pressing plate 202 can squeeze and fix the butterfly wing of the butterfly needle.

[0028] Reference Figure 3 , Figure 4 Both adjustment mechanisms 7 include a fixed column 702 and a movable column 705. A spring 701 is fixedly installed inside each of the two fixed columns 702. A first movable plate 703 is fixedly installed at the upper end of each of the two springs 701. A second movable plate 704 is fixedly installed at the lower end of each movable column 705. The two first movable plates 703 are fixedly connected to the second movable plates 704. Multiple bolt holes 706 are opened on one side of each of the two second movable plates 704 and the movable column 705. The two movable columns 705 are slidably installed inside the fixed column 702.

[0029] Specifically, the adjustment mechanism 7, when in use, works in conjunction with the fixed column 702 and the movable column 705 to connect and fix the first connecting plate 102 and the second connecting plate 103. The extension and retraction of the spring 701 can drive the first movable plate 703 and the second movable plate 704 to move. When the second movable plate 704 moves, it can drive the movable column 705 and the second connecting plate 103 to move, thereby adjusting the overall height of the device body 1. The adjusted device body 1 can be positioned and fixed by threading the fixing bolts into the bolt holes 706.

[0030] Working principle: When using this device, it is first attached to the patient's skin using the adhesive piece 101. Then, the butterfly needle is installed on the second connecting plate 103, and the butterfly is pressed by the pressing plate 202 to compress and fix the butterfly needle. The needle tip can be inserted into the first positioning block 3 and the second positioning block 6 to fix the needle tip in place, thus facilitating the precise insertion of the butterfly needle into the infusion port. During use, the device can also adjust the overall height of the main body 1 by adjusting the spring 701 to move the first moving plate 703, the second moving plate 704, the moving column 705, and the second connecting plate 103, according to the butterfly needle of different sizes. This allows for the movement of the butterfly needle of different lengths into the infusion port. After adjustment, the main body 1 is fixed by threading the fixing bolt into the bolt hole 706.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning device for an infusion port needle, comprising a main body (1), characterized in that: The upper two sides of the main body (1) of the device are fixedly provided with fixing mechanisms (2), the lower middle position of the main body (1) of the device is fixedly provided with connecting blocks (4) on both sides, and the middle two sides of the main body (1) of the device are fixedly provided with adjusting mechanisms (7). Both of the fixing mechanisms (2) include a first fixing block (201), a pressing plate (202), and a second fixing block (204). A connecting column (203) is fixedly installed on the upper end of each of the two first fixing blocks (201). Both of the adjusting mechanisms (7) include a fixing column (702) and a moving column (705). A spring (701) is fixedly installed inside each of the two fixing columns (702). A first moving plate (703) is fixedly installed on the upper end of each of the two springs (701). A second moving plate (704) is fixedly installed on the lower end of the moving column (705).

2. The infusion port needle positioning device according to claim 1, characterized in that: The main body (1) of the device includes a first connecting plate (102) and a second connecting plate (103). An adhesive piece (101) is fixedly provided at the lower end of the first connecting plate (102). The first connecting plate (102) and the second connecting plate (103) are connected by an adjustment mechanism (7).

3. The infusion port needle positioning device according to claim 1, characterized in that: Both pressing plates (202) are fixedly sleeved on the outer surface of the connecting column (203), and both second fixing blocks (204) are threadedly sleeved on the upper end of the connecting column (203).

4. The infusion port needle positioning device according to claim 1, characterized in that: A sponge block (5) is attached and fixed to the lower end of the main body (1) of the device.

5. The infusion port needle positioning device according to claim 1, characterized in that: A first positioning block (3) is fixedly installed at the middle position of the upper end of the main body (1) of the device, and a second positioning block (6) is fixedly installed at the middle position of the lower end of the main body (1).

6. The infusion port needle positioning device according to claim 1, characterized in that: Both of the first movable plates (703) are fixedly connected to the second movable plate (704), and multiple bolt holes (706) are provided on one side of both second movable plates (704) and movable column (705).

7. The infusion port needle positioning device according to claim 1, characterized in that: Both of the movable columns (705) are slidably disposed inside the fixed column (702).