A needle-removal fixation device for infusion ports to prevent needlestick injuries

Abstract

This utility model discloses an infusion port needle removal fixation device to prevent needle stick injuries, belonging to the field of infusion port needle removal technology. This device includes a needle removal fixation assembly with a limiting component at its lower end. The key technical point is that through the cooperation of the various parts of the limiting component, the entire device is fitted to the upper end of the infusion port via a connecting seat. The circular groove at the lower end of the connecting seat limits and locates the infusion port, thus achieving a limiting effect. Through the cooperation of the various parts of the needle removal fixation assembly, the needle to be inserted can be vertically limited by the insertion sleeve. After injection, simply lift the ring handle upwards manually. Lifting the ring handle upwards drives multiple hinge shafts upwards, which in turn drive the sliding block to compress the return spring. The multiple hinge shafts hinged to the insertion sleeve ensure that the needle is held vertically during removal.

Description

Technical Field

[0001] This utility model relates to the field of infusion port needle removal technology, and more specifically, to an infusion port needle removal fixator to prevent needle stick injuries. Background Technology

[0002] The needlestick fixation device for infusion ports is a medical device specifically designed to ensure the safety of healthcare workers and prevent needlestick injuries during the removal of the non-traumatic needle from infusion ports. An infusion port is a completely implanted closed venous infusion system, primarily used for long-term intravenous infusions, chemotherapy, and other treatments. When removing the non-traumatic needle from an infusion port, the needle tip is relatively sharp, and healthcare workers may be injured by needlestick injuries if they are not careful, posing a risk of bloodborne infections. This fixation device was developed to effectively avoid this risk.

[0003] Chinese Patent Publication No. CN221491021U discloses a butterfly needle removal auxiliary device for preventing needlestick injuries. This design includes a Y-shaped pressing head to fix the infusion port, and a grip to convert direct hand pressure on the infusion port into indirect pressure, thereby preventing needlestick injuries. Furthermore, sensors and a display screen make the pressure visible, facilitating needle removal and saving time and effort. However, for ordinary needles, removal typically involves a vertical insertion / removal method. In this method, the needle's movement direction is at a 90-degree angle to the plane of the blood vessel or infusion port. This method makes it less likely for the needle to deviate or wobble during removal. When removing the needle vertically, the needle moves in a straight line in the opposite direction to its entry into the blood vessel or tissue. Withdrawing the needle results in relatively less cutting force on the blood vessel wall and surrounding tissues. However, if the needle is withdrawn at an angle, the needle tip may cause oblique cutting to the blood vessel wall or tissues, increasing the risk of damage to the vascular endothelium and tearing of surrounding tissues. Although the human hand structure is flexible, it is somewhat limited when performing precise operations in the vertical direction. The joints and muscles of the hand are more adapted to complex movements in multiple directions in their natural state. For example, the flexion and extension of the fingers are mainly for grasping objects. However, in vertical withdrawal and insertion operations, it is difficult to achieve precise vertical movement by relying solely on the flexion and extension of the fingers because the force control of the fingers in the vertical direction is relatively weak. Moreover, the hand is prone to involuntary slight tremors during operation, which will affect the accuracy of vertical withdrawal and insertion operations.

[0004] Therefore, a needle removal fixation device for infusion ports that prevents needlestick injuries is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a needle removal fixation device for infusion ports to prevent needle stick injuries. Through the cooperation between the various parts of the limiting component, the entire device is attached to the upper end of the infusion port through the connecting seat. The circular groove at the lower end of the connecting seat is used to limit and locate the infusion port, thereby achieving the limiting effect.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A needle removal fixation device for preventing needle stick injuries includes a needle removal fixation assembly, a limiting assembly at the lower end of the needle removal fixation assembly, and an installation assembly at the upper end of the needle removal fixation assembly.

[0008] The needle removal fixing assembly includes a fixed base, and a plurality of sliding blocks are slidably connected to the upper end of the fixed base. One end of each of the plurality of sliding blocks is fixedly connected to a return spring, and one end of each of the plurality of return springs is fixedly connected to the inner sidewall of the fixed base.

[0009] Furthermore, each of the sliding blocks has a hinge block fixedly connected to its upper end, each of the hinge blocks has a hinge shaft hinged inside, each of the hinge shafts has a connecting block hinged to its upper end, and one end of each connecting block has a pull-in sleeve fixedly connected to it.

[0010] Furthermore, the limiting component includes a connecting seat fixedly connected to the lower end of the fixed base, and a limiting sleeve is fixedly connected to the middle of the connecting seat.

[0011] Furthermore, the installation assembly includes a ring handle, and multiple connecting rods are fixedly connected inside the ring handle, with one end of each connecting rod fixedly connected to the middle of the plug-in sleeve.

[0012] Furthermore, both the upper and lower ends of the plug-in sleeve are tapered.

[0013] Furthermore, the upper end of the fixed base is provided with a strip-shaped sliding groove.

[0014] Furthermore, the overall shape of the limiting sleeve is tapered.

[0015] In summary, this utility model has the following beneficial effects:

[0016] (1) This solution achieves the limiting effect by the mutual cooperation between the various parts of the limiting component and the connection seat to attach the entire device to the upper end of the infusion port. The circular groove at the lower end of the connection seat is used to limit and locate the infusion port.

[0017] (2) This solution uses the cooperation between the various parts of the needle removal and fixing assembly to vertically limit the needle to be inserted through the insertion sleeve. After the injection is completed, you only need to manually lift the ring handle upward. Lifting the ring handle upward will drive multiple hinge shafts upward, and the hinge shafts upward will drive the sliding block to squeeze the return spring. Through the setting of multiple hinge shafts hinged to the insertion sleeve, the needle can be protected when it is removed, so that it remains vertical. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure in this embodiment;

[0019] Figure 2 This is a schematic diagram of the overall disassembled structure in this embodiment;

[0020] Figure 3 This is a schematic diagram of the disassembled structure of the pin removal fixing component and the mounting component in this embodiment;

[0021] Figure 4 This is a schematic diagram of the overall disassembled structure of the needle removal and fixing component in this embodiment;

[0022] Figure 5 This is a schematic cross-sectional view of the insertion and removal sleeve in this embodiment;

[0023] Figure 6 This is a schematic diagram of the bottom structure of the connecting seat in this embodiment.

[0024] The following components are labeled in the diagram: 1. Needle removal fixing assembly; 2. Limiting assembly; 3. Mounting assembly; 101. Fixing base; 102. Sliding block; 103. Return spring; 104. Hinge block; 105. Hinge shaft; 106. Connecting block; 107. Insertion and removal sleeve; 201. Connecting seat; 202. Limiting sleeve; 301. Annular handle; 302. Connecting rod. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0027] Reference Figures 1-6 As shown, a preferred embodiment of the present invention is an infusion port needle removal fixation device for preventing needle stick injuries, including a needle removal fixing component 1, a limiting component 2 at the lower end of the needle removal fixing component 1, and an installation component 3 at the upper end of the needle removal fixing component 1.

[0028] The needle removal fixing assembly 1 includes a fixing base 101. Multiple sliding blocks 102 are slidably connected to the upper end of the fixing base 101. A return spring 103 is fixedly connected to one end of each sliding block 102. One end of each return spring 103 is fixedly connected to the inner side wall of the fixing base 101.

[0029] Each of the multiple sliding blocks 102 has a hinge block 104 fixedly connected to its upper end. Each of the multiple hinge blocks 104 has a hinge shaft 105 hinged inside. Each of the multiple hinge shafts 105 has a connecting block 106 hinged to its upper end. One end of each of the multiple connecting blocks 106 is fixedly connected to a plug-in sleeve 107.

[0030] This design uses a strip-shaped sliding groove at the top to cooperate with the sliding block 102, providing a clear sliding track for the sliding block 102 and ensuring its stable movement in a specific direction. At the same time, its inner wall is connected to the return spring 103, providing a fixing point for the return spring 103, so that the return spring 103 can play a role in the needle removal operation.

[0031] The limiting component 2 includes a connecting seat 201 fixedly connected to the lower end of the fixed base 101, and a limiting sleeve 202 fixedly connected to the middle of the connecting seat 201.

[0032] The mounting assembly 3 includes a ring handle 301, and multiple connecting rods 302 are fixedly connected inside the ring handle 301. One end of each of the multiple connecting rods 302 is fixedly connected to the middle of the plug-in sleeve 107.

[0033] This solution allows the operator to manually lift the ring handle 301 to start the entire needle removal and fixing process. Its shape and size are designed in accordance with ergonomic principles, making it easy to hold and operate, and providing a convenient way to perform needle removal operations.

[0034] The upper and lower ends of the pull-out sleeve 107 are both tapered.

[0035] This design, with its tapered upper and lower ends, facilitates needle insertion and withdrawal. After injection, manually lifting the annular handle 301 causes the insertion / removal sleeve 107 to move upwards via the connecting rod 302, connecting block 106, and hinge shaft 105, thus removing the needle. Simultaneously, the hinged arrangement of multiple hinge shafts 105 with the insertion / removal sleeve 107 maintains a vertical position during needle removal, protecting the needle and reducing the risk of needlestick injury.

[0036] The upper end of the fixed base 101 is provided with a strip-shaped sliding groove.

[0037] The limiting sleeve 202 has an overall conical shape.

[0038] This design utilizes the tapered shape of the limiting sleeve 202 to facilitate the guidance of the needle.

[0039] Specific implementation process: The fixed base 101 serves as the basic structure of the entire needle removal fixing assembly, providing an installation and support platform for components such as the sliding block 102 and the return spring 103. Its internal space and surface structure are designed to accommodate and guide the sliding movement of the sliding block 102, ensuring stable movement of the sliding block 102 in a specific direction. Simultaneously, the shape and size of the fixed base 101 are also designed for connection and cooperation with the limiting component 2 and the mounting component 3, ensuring the structural integrity and stability of the entire fixing device. The strip-shaped sliding groove at the upper end provides a clear sliding track for the sliding block 102, limiting its range of motion and ensuring it can only move in the direction specified by the strip-shaped sliding groove. This design ensures the stability of the sliding block 102. When subjected to external force, it can move along a predetermined path, thus ensuring the working stability of the entire needle removal fixing assembly 1. It works in conjunction with the return spring 103 and the hinge block 104. When subjected to external force, the sliding block 102 can slide within the strip-shaped sliding groove of the fixed base 101. For example, during needle removal, when the annular handle 301 is lifted upward, the force transmitted through the hinge shaft 105 acts on the sliding block 102, causing it to squeeze the return spring 103 and slide within the strip-shaped sliding groove. The material and surface treatment of the sliding block 102 enable it to maintain low friction during sliding, ensuring smooth movement. One end is fixedly connected to the sliding block 102, and the other end is fixedly connected to the inner side wall of the fixed base 101. In normal state... When the sliding block 102 is in its initial position, the return spring 103 is in its naturally extended state, providing a certain supporting force to keep it in its initial position. When the needle is removed, the sliding block 102 is compressed by external force, and the return spring 103 is compressed and stores elastic potential energy. After the needle is removed, when the external force disappears, the return spring 103 releases its elastic potential energy, pushing the sliding block 102 back to its initial position, preparing for the next operation. The upper end of the hinge block 104 is fixed to the upper end of the sliding block 102, providing a hinge connection point for the hinge shaft 105. The design of the hinge block 104 allows the hinge shaft 105 to rotate freely within a certain angle range while ensuring the stability of the connection. During the needle removal operation, when the ring handle 301 is lifted, the hinge shaft 105 is held in place by the hinge block 104. The four points of rotation transmit force to the sliding block 102, thereby realizing the sliding movement of the sliding block 102. One end is hinged to the hinge block 104, and the other end is hinged to the connecting block 106. The hinge shaft 105 plays the role of force transmission and conversion. During the needle removal operation, when the ring handle 301 is lifted, the force is transmitted to the hinge shaft 105 through the connecting block 106. The hinge shaft 105 rotates at the hinge block 104 and transmits the force to the sliding block 102, causing the sliding block 102 to compress the return spring 103. At the same time, the arrangement of multiple hinge shafts 105 hinged to the insertion and removal sleeve 107 ensures that the insertion and removal sleeve 107 can maintain a vertical state during needle removal. Since the hinge shaft 105 can rotate in multiple directions, it can adapt to different operating angles and force changes.To ensure the stability and accuracy of the needle removal process, one end of the connecting block 106 is hinged to the hinge shaft 105, and the other end is fixedly connected to the insertion / removal sleeve 107. The connecting block 106 serves to connect and transmit force during the needle removal operation. When the ring handle 301 is lifted, the force is transmitted to the insertion / removal sleeve 107 through the connecting rod 302. The insertion / removal sleeve 107 then transmits the force to the hinge shaft 105 through the connecting block 106, thus triggering a series of actions. The design of the connecting block 106 ensures a firm and reliable connection with the hinge shaft 105 and the insertion / removal sleeve 107, and it can withstand various forces during the needle removal process. As a component that directly contacts the needle tip, the insertion / removal sleeve 107 vertically limits the insertion of the needle. Its internal shape and dimensions are designed to tightly enclose the needle tip, ensuring the needle... The needle head remains vertical during insertion and withdrawal. The upper and lower ends of the insertion / withdrawal sleeve 107 are tapered. This design facilitates needle insertion and withdrawal and helps guide the needle into the correct position. After injection, simply lift the annular handle 301 manually. The annular handle 301 transmits force to the insertion / withdrawal sleeve 107 via the connecting rod 302, connecting block 106, and hinge shaft 105, causing the sleeve to move upwards and thus removing the needle. Simultaneously, the multiple hinge shafts 105 hinged to the insertion / withdrawal sleeve 107 provide support during needle removal, keeping the needle vertical and reducing the risk of needlestick injury. The connecting seat 201 is fixedly connected to the lower end of the fixed base 101, serving as... The connecting and positioning functions of the connector 201 ensures the stability of the device during needle removal by fitting the entire device to the upper end of the infusion port via the connector 201. The shape and size of the connector 201 are designed to match the shape of the infusion port for accurate positioning and fixation. For example, the lower end of the connector 201 may have a circular groove for positioning and locating the infusion port, allowing the device to be quickly and accurately installed on the port, providing a stable foundation for needle removal. The fixed connection is located in the middle of the connector 201, and its overall shape is conical. The limiting sleeve 202 further strengthens the positioning and fixation of the infusion port. The conical design better adapts to the shape of the infusion port, improving the stability of the fixation. During needle removal, the limiting sleeve 202 prevents the retainer from moving or shaking on the infusion port, ensuring the accuracy and safety of the needle removal operation. As the component directly contacted by the operator, the ring handle 301 provides a convenient operating interface for needle removal. During the removal process, the operator simply needs to manually lift the ring handle 301 upwards to initiate the entire needle removal retainer's workflow. The shape and size of the ring handle 301 are designed according to ergonomic principles for easy gripping and operation. Simultaneously, the material of the ring handle 301 must possess sufficient strength and durability to withstand various forces during needle removal. Connecting the ring handle 301 and the insertion / removal sleeve 107, it serves to transmit force. When the ring handle 301 is lifted...Force is transmitted to the pull-out sleeve 107 via the connecting rod 302, triggering the needle removal operation. The number and position of the connecting rods 302 must be designed according to the dimensions and force conditions of the annular handle 301 and the pull-out sleeve 107 to ensure stable and reliable force transmission. Simultaneously, the material of the connecting rods 302 must possess sufficient strength and rigidity to withstand the tensile and compressive forces during the needle removal process.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A needle removal fixation device for preventing needlestick injuries in infusion ports, comprising a needle removal fixation assembly (1), characterized in that: The lower end of the needle removal fixing component (1) is provided with a limiting component (2), and the upper end of the needle removal fixing component (1) is provided with an installation component (3). The needle removal fixing assembly (1) includes a fixed base (101), and a plurality of sliding blocks (102) are slidably connected to the upper end of the fixed base (101). A return spring (103) is fixedly connected to one end of each of the plurality of sliding blocks (102), and one end of each of the plurality of return springs (103) is fixedly connected to the inner sidewall of the fixed base (101).

2. The infusion port needle removal fixation device for preventing needlestick injuries according to claim 1, characterized in that: Each of the sliding blocks (102) has a hinge block (104) fixedly connected to its upper end. Each of the hinge blocks (104) has a hinge shaft (105) hinged inside. Each of the hinge shafts (105) has a connecting block (106) hinged to its upper end. One end of each connecting block (106) has a plug-in sleeve (107) fixedly connected to it.

3. The infusion port needle removal fixation device for preventing needlestick injuries according to claim 1, characterized in that: The limiting component (2) includes a connecting seat (201) fixedly connected to the lower end of the fixed base (101), and a limiting sleeve (202) is fixedly connected to the middle part of the connecting seat (201).

4. The infusion port needle removal fixation device for preventing needlestick injuries according to claim 1, characterized in that: The installation assembly (3) includes a ring handle (301), and multiple connecting rods (302) are fixedly connected inside the ring handle (301). One end of each of the multiple connecting rods (302) is fixedly connected to the middle of the plug-in sleeve (107).

5. A needle-removal fixation device for infusion ports according to claim 2, characterized in that: The upper and lower ends of the plug-in sleeve (107) are both tapered.

6. The infusion port needle removal fixation device for preventing needlestick injuries according to claim 1, characterized in that: The upper end of the fixed base (101) is provided with a strip-shaped sliding groove.

7. The infusion port needle removal fixation device for preventing needlestick injuries according to claim 3, characterized in that: The limiting sleeve (202) has a tapered shape.

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