Infusion tube cutting device

Abstract

The application discloses an infusion tube cutting device, and particularly relates to the technical field of waste needle storage, which comprises a movable cutting blade, a fixed blade and an eccentric pushing mechanism; the eccentric pushing mechanism comprises a rotating piece, a rotating disc, a fixed ring and a guide pushing block which are installed on a cover body; the rotating disc is eccentrically fixed on the rotating piece, the fixed ring and the rotating disc are coaxially fixed, the guide pushing block is rotatably sleeved on the fixed ring, the guide pushing block is in transmission connection with the movable cutting blade, and a gap suitable for placing an infusion tube is formed between the movable cutting blade and the fixed blade. The infusion tube cutting device has the function of preventing hands from contacting the needle and the liquid in the infusion tube, and simultaneously, the problem that the traditional scissors are easily affected by the resilience of the infusion tube when being sheared is optimized.

Description

Technical Field

[0001] This application relates to the field of waste needle storage technology, and in particular to an infusion tube cutting device. Background Technology

[0002] In clinical medical care, after an intravenous infusion is completed, it is usually necessary to separate the used infusion needle from the infusion tubing for sorting and disposal to prevent needlestick injuries and cross-infection. Currently, the separation operation is mostly performed manually by medical staff, who hold the needle in one hand and scissors or directly break the connection between the infusion tubing and the needle hub by hand.

[0003] However, this traditional method has many drawbacks, such as: (1) manual operation is prone to needlestick injuries, which is one of the main occupational exposure risks for medical staff and may lead to infection with bloodborne pathogens. (2) during the cutting process with scissors, the tubing is tough and requires repeated force, and the body fluids or medications in the tubing are easy to splash onto the operator, leading to occupational exposure risks. Utility Model Content

[0004] This invention provides an infusion tube cutting device that prevents the hand from contacting the needle and the liquid in the infusion tube. At the same time, it also optimizes the problem that traditional scissors are easily affected by the toughness and rebound of the infusion tube when cutting.

[0005] The objective of this utility model is achieved through the following technical solution: An infusion tube cutting device includes a movable cutting blade, a fixed blade, and an eccentric pushing mechanism; the eccentric pushing mechanism includes a rotating component, a rotating disk, a fixed ring, and a guide push block mounted on a cover; the rotating disk is eccentrically fixed to the rotating component, the fixed ring is coaxially fixed to the rotating disk, the guide push block is rotatably sleeved on the fixed ring, the guide push block and the movable cutting blade are connected in a transmission manner, and a gap is formed between the movable cutting blade and the fixed blade to accommodate the insertion of the infusion tube.

[0006] Preferably, the rotating component includes an upper rotating block and a lower fixed block. The cover is provided with a rotating groove. After the upper rotating block and the lower fixed block are screwed together and fixed, the lower fixed block is pressed against the groove opening of the rotating groove.

[0007] Preferably, the fixed ring has a rotating mounting groove on its side end, and correspondingly, the guide push block has a rotating protrusion.

[0008] Preferably, the eccentric drive mechanism further includes a rotating rod, which is fixed to the upper end of the rotating disk, and the rotating rod and the upper rotating block are coaxially fixed.

[0009] Preferably, the upper end of the rotating rod is provided with a handle adapted for the user to rotate.

[0010] Preferably, a sliding plate is fixedly installed on the cover, the movable cutting blade is slidably installed on the sliding plate, and the fixed blade is fixed on the sliding plate.

[0011] Preferably, the sliding plate is provided with a sliding groove, and correspondingly, the lower end of the movable cutting blade is provided with a slider adapted to the sliding groove.

[0012] Preferably, a connecting spring is fixedly installed inside the slide groove, with one end of the connecting spring fixed to the groove wall and the other end fixed to the slider.

[0013] Preferably, the guide pusher is provided with a guide pusher surface, and correspondingly, the movable cutting blade is provided with a force-bearing surface that matches the guide pusher surface.

[0014] Preferably, the cover has a through hole for inserting a needle, and the through hole is located below the gap.

[0015] Compared with the prior art, the advantages or beneficial effects of the technical solution of this application include: 1. The eccentric push mechanism converts the rotational motion into linear propulsion force, and by guiding the push surface and the force-bearing surface, a smooth and labor-saving cutting action is achieved. This avoids the toughness and rebound of the infusion tube that could lead to cutting failure, making the operation simpler and faster.

[0016] 2. Cutting is accomplished by the cooperation of moving and fixed cutting blades, keeping the operator's hands away from the cutting point and needle tip, thus fundamentally avoiding the risk of needle prick.

[0017] 3. During the cutting process, the infusion tube should always face downwards, and the liquid outlet inside the tube should always face away from the operator to avoid splashing medicine or bodily fluids onto the operator. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of an infusion tube cutting device; Figure 2 for Figure 1 Enlarged view of part A in the image; Figure 3 A cross-sectional structural diagram of an infusion tube cutting device; Figure 4 for Figure 3 Enlarged view of part B in the image.

[0019] In the diagram: 2. Guide push block, 3. Rotating rod, 4. Handle, 5. Connecting spring, 6. Moving cutting blade, 7. Sliding plate, 8. Fixed blade, 9. Through hole, 10. Rotating protrusion, 11. Fixed ring, 12. Rotating disk, 13. Lower fixed block. Detailed Implementation

[0020] The following detailed description of the embodiments of this application, in conjunction with the accompanying drawings, will provide a thorough understanding of how this application uses technical means to solve technical problems and achieve corresponding technical effects, enabling its implementation. The embodiments of this application and the various features within them can be combined with each other without conflict, and all resulting technical solutions are within the protection scope of this application.

[0021] It should be clearly stated that the embodiments described below are merely some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. Example

[0022] See Figure 1 and Figure 2 The infusion tube cutting device mainly includes a cover, a movable cutting blade 6, a fixed blade 8, and an eccentric pushing mechanism.

[0023] The eccentric pushing mechanism is the core driving part, comprising a rotating component, a rotating disk 12, a fixing ring 11, and a guide push block 2. The rotating component, specifically an upper rotating block and a lower fixing block 13, is used to mount the entire mechanism onto the cover. A circular rotating groove is machined on the cover. During installation, the lower fixing block 13 is first placed into the groove, and then the upper rotating block is screwed onto the lower fixing block 13 from above using threads. After tightening, the outer edge of the lower fixing block 13 forms a tight fit with the edge of the rotating groove, thus ensuring that the entire rotating component can rotate relative to the cover without falling out of the groove, resulting in a stable installation.

[0024] The rotating disk 12 is eccentrically fixed to the lower end of the lower fixed block 13 (i.e., the output end of the rotating component) through its central mounting hole. A fixed ring 11 is coaxially fixedly connected to the rotating disk 12. The guide push block 2 is rotatably fitted onto the fixed ring 11 through its rotating protrusion 10 engaging with the rotating mounting groove on the side end of the fixed ring 11. For ease of operation, a rotating rod 3 is fixed to the upper center of the rotating disk 12, and the rotating rod 3 is coaxially fixed to the upper rotating block. The upper end of the rotating rod 3 is provided with a handle 4 for easy gripping and application of force.

[0025] See Figure 2 and Figure 3 A sliding plate 7 is fixedly installed on the cover. The fixed blade 8 is directly fixed on the sliding plate 7. The movable cutting blade 6 is slidably installed in a groove on the sliding plate 7 via a slider at its lower end, allowing the movable cutting blade 6 to reciprocate linearly along the groove. The movable cutting blade 6 and the fixed blade 8 are arranged opposite each other, forming a gap between their cutting edges for inserting the infusion tube.

[0026] A connecting spring 5 is installed inside the groove of the sliding plate 7. One end of the connecting spring 5 is fixed to the inner wall of the groove, and the other end is fixed to the slider of the moving cutting blade 6. In its natural state, the elastic force of the connecting spring 5 keeps the moving cutting blade 6 away from the fixed blade 8, maintaining the gap open.

[0027] The guide pusher 2 has an inclined or contoured guide push surface on its side. Correspondingly, a force-bearing surface that perfectly matches the guide push surface is machined on the side of the movable cutting blade 6. When the guide pusher 2 rotates with the fixed ring 11, its guide push surface contacts the force-bearing surface of the movable cutting blade 6 and generates a thrust.

[0028] On the cover, directly below the gap between the movable cutting blade 6 and the fixed blade 8, there is a through hole 9, the diameter of which is slightly larger than the size of the infusion needle.

[0029] Working Principle: In the initial state, the connecting spring 5 resets the movable cutting blade 6, maximizing the gap between it and the fixed blade 8. During use, the portion of the infusion tubing to be cut (usually the connection between the needle hub and the tubing) is placed into the gap. The user holds the handle 4 and rotates the rotating rod 3. The rotating rod 3 drives the rotating disk 12 and the fixed ring 11 to rotate together. Since the guide push block 2 is rotatably fitted onto the fixed ring 11, when the fixed ring 11 rotates, the guide push block 2 undergoes a compound motion due to the contact constraint between its guide push surface and the force-bearing surface of the movable cutting blade 6. This motion ultimately decomposes into a linear component force that pushes the movable cutting blade 6 towards the fixed blade 8. Under the push of the guide push surface, the movable cutting blade 6 overcomes the elastic force of the connecting spring 5 and moves along the groove towards the fixed blade 8, together cutting the infusion tubing placed in the gap. After cutting, the rotating rod 3 is released, and under the restoring force of the connecting spring 5, the movable cutting blade 6 is pulled back to its original position, and the gap reopens. The severed needle tip falls directly into the pre-placed sharps box below through the through hole 9 due to gravity.

Claims

1. An infusion tube cutting device, characterized in that, It includes a movable cutting blade (6), a fixed blade (8), and an eccentric push mechanism; The eccentric pushing mechanism includes a rotating component, a rotating disk (12), a fixing ring (11), and a guide push block (2) mounted on the cover. The rotating disk (12) is eccentrically fixed on the rotating part, the fixed ring (11) and the rotating disk (12) are coaxially fixed, the guide push block (2) is rotatably sleeved on the fixed ring (11), the guide push block (2) and the moving cutting blade (6) are connected by transmission, and a gap is formed between the moving cutting blade (6) and the fixed blade (8) to accommodate the insertion of the infusion tube.

2. The infusion tube cutting device according to claim 1, characterized in that, The rotating component includes an upper rotating block and a lower fixed block (13). The cover is provided with a rotating groove. After the upper rotating block and the lower fixed block (13) are screwed together, the lower fixed block (13) is pressed against the groove opening of the rotating groove.

3. The infusion tube cutting device according to claim 1, characterized in that, The fixed ring (11) has a rotating mounting groove on its side end, and correspondingly, the guide push block (2) has a rotating protrusion (10).

4. The infusion tube cutting device according to claim 2, characterized in that, The eccentric drive mechanism also includes a rotating rod (3), which is fixed to the upper end of the rotating disk (12). The rotating rod (3) and the upper rotating block are coaxially fixed.

5. The infusion tube cutting device according to claim 4, characterized in that, The upper end of the rotating rod (3) is provided with a handle (4) adapted to the user's rotation.

6. The infusion tube cutting device according to claim 1, characterized in that, A sliding plate (7) is fixedly installed on the cover, the movable cutting blade (6) is slidably installed on the sliding plate (7), and the fixed blade (8) is fixed on the sliding plate (7).

7. The infusion tube cutting device according to claim 6, characterized in that, The sliding plate (7) is provided with a sliding groove, and correspondingly, the lower end of the movable cutting blade (6) is provided with a slider adapted to the sliding groove.

8. The infusion tube cutting device according to claim 7, characterized in that, A connecting spring (5) is fixedly installed inside the chute. One end of the connecting spring (5) is fixed to the chute wall, and the other end is fixed to the slider.

9. The infusion tube cutting device according to claim 7, characterized in that, The guide push block (2) is provided with a guide push surface, and correspondingly, the movable cutting blade (6) is provided with a force-bearing surface that matches the guide push surface.

10. The infusion tube cutting device according to claim 7, characterized in that, The cover is provided with a through hole (9) for the insertion of a needle, and the through hole (9) is located below the gap.

Images