Field medical sharps collection device

Abstract

This utility model relates to a field medical sharps collection device, which consists of a housing and a detachable cap. The cap has a through hole for inserting an injection needle and is hollow inside. A drive ring is rotatably connected within the cavity of the cap. The drive ring has multiple drive grooves, each with a different distance between its two ends and the central axis of the cap. Additionally, the cap has multiple positioning grooves corresponding to the drive grooves, with the center line of each positioning groove coinciding with the radius of the cap. A driven rod is inserted into each positioning groove and its corresponding drive groove, and a limiting member is fitted around the driven rod. By rotating the drive ring, the device increases the clamping force of the limiting member on the injection needle, facilitating the operator's separation of the syringe and the injection needle, thereby improving the convenience and safety of operation.

Description

Technical Field

[0001] This utility model relates to the field of medical recycling equipment technology, and in particular to a field medical sharps collection device. Background Technology

[0002] Medical syringes, as indispensable devices in the medical field, play a crucial role in the interaction between doctors and patients. The device consists of a syringe with micro-holes at the tip, a matching piston rod, and an injection needle.

[0003] It should be noted that medical syringes are single-use medical devices. In actual recycling processes, unlike the well-maintained environment within hospitals, medical syringes used in the field require the needles and syringes to be stored separately. This reduces storage complexity and ensures that the needles are handled individually and appropriately to prevent cross-contamination.

[0004] Currently, storage devices for injection needles typically include a collection box with a through-hole at the top for inserting the needle. A compression spring with a horizontal central axis is installed inside the through-hole, one end of which contacts the inner wall of the collection box, and the other end is fixedly connected to a limiting element. It is important to emphasize that the limiting element and the through-hole are located in the same vertical plane. When the injection needle is inserted into the through-hole, the limiting element restricts the needle's position, preventing it from moving upwards with the syringe barrel, thus separating the needle from the syringe barrel.

[0005] In practical applications, we have observed that in high humidity and high temperature environments in the field, coupled with the small diameter of the springs due to size limitations, the springs are prone to corrosion after long-term use, making them unable to reset and affecting the function of the device.

[0006] Based on this, we propose a design concept for a field medical sharps collection device that can actively adjust the position of the limiting component to resist interference from environmental factors. Utility Model Content

[0007] To address the shortcomings of existing technologies, this invention proposes a field medical sharps collection device. This device possesses resistance to environmental interference, ensuring the long-term effective operation of the limiting components. It solves the problem of field corrosion caused by relying on springs to control the position of the limiting components, thus guaranteeing the device's functionality.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A field medical sharps collection device includes a housing with a detachable cap at its upper end. The cap has a through-hole into which an injection needle is inserted. The cap has a hollow interior and a rotatable drive ring. The drive ring has multiple drive grooves, each with unequal distances between its two ends and the central axis of the drive ring. The inner wall of each drive groove is smoothly transitioned. The cap also has multiple positioning grooves, each corresponding to one of the drive grooves. The centerline of each positioning groove coincides with the radius of the cap. Each positioning groove and its corresponding drive groove share a common insertion point, a driven rod, and a limiting member is fitted around each driven rod. The injection needle is positioned between these limiting members, and the limiting members abut against the injection needle.

[0010] Preferably, a drive gear is keyed to the outer side of the drive ring, and a rack is meshed and driven on one side of the drive gear. Furthermore, a notch is provided on the cover for the rack, and the rack is located in the notch and is slidably connected to the cover.

[0011] Preferably, a tension spring with a horizontal central axis is movably connected to the side end of the drive gear, and the other end of the tension spring is movably connected to the cover. When the tension spring is not affected by external force, the driven rod is located on the side of the drive groove away from the central axis of the cover.

[0012] Preferably, the limiting member includes a follower ring sleeved on the outside of the driven rod, a contact member is slidably connected to the follower ring on the side near the central axis of the cover, and a compression spring is provided between the contact member and the follower ring, with the two axial ends of the compression spring abutting against the contact member and the follower ring respectively.

[0013] Preferably, the contact element includes a mounting block, and an elastic pad made of rubber is fixedly connected to the mounting block near the cover side.

[0014] Preferably, when the driven rod is located on the side of the drive groove away from the central axis of the cap, the elastic pad is in interference fit with the injection needle, and when the driven rod is located on the side of the drive groove close to the central axis of the cap, the distance between the multiple contact elements is greater than the lower diameter of the injection needle.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention employs a mechanism involving a driving groove, a positioning groove, and a driven rod to actively adjust the clamping force applied to the side of the injection needle by rotating the driving ring, similar to the adjustment method of the limiting component in a sharps collection device. This design facilitates the operator's separation of the syringe and the injection needle. Compared to existing devices, this invention, with its innovative method of actively adjusting the position of the limiting component, significantly reduces the interference of environmental factors on the device's performance, ensuring stable operation in various environments and preventing the storage function from failing due to environmental factors. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the cap of this utility model.

[0019] Figure 3 This is a schematic diagram showing the positional relationship between the driven rod and the limiting member of this utility model.

[0020] Figure 4 This is a schematic diagram showing the relationship between the tension spring and the drive gear of this utility model.

[0021] Figure 5 This is a schematic diagram of the overall structure of the cap of this utility model.

[0022] Figure 6 This is a schematic diagram showing the relationship between the contact element and the injection needle of this utility model.

[0023] In the diagram: 1. Injection needle; 2. Cap; 3. Housing; 4. Tension spring; 5. Drive gear; 6. Rack; 7. Limiting element; 701. Follower ring; 702. Compression spring; 703. Contact element; 7031. Elastic pad; 7032. Mounting block; 8. Drive groove; 9. Driven rod; 10. Drive ring; 11. Through hole; 12. Positioning groove. Detailed Implementation

[0024] 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.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] See Figure 1 A field medical sharps collection device, similar in structure to existing devices, includes a housing. In practical operation, this device effectively collects and stores injection needles 1 using the housing, thereby significantly reducing the risk of cross-infection caused by improper storage of discarded needles. Furthermore, the device is designed with portability and safety in mind, ensuring that medical workers can safely and efficiently dispose of sharps waste in field conditions.

[0027] Therefore, this device features a removable cap 2 at the top of the housing to seal the housing and prevent the injection needle 1 from separating from it. It should be particularly noted that... Figure 2 , Figure 5 As shown, the lower side of the cover 2 is provided with external threads. This design allows the cover 2 and the housing to be detachably connected via threads.

[0028] In addition, the cap 2 is provided with through holes 11 for inserting the injection needle 1. The design of these through holes 11 makes it easy for medical personnel to safely insert the used injection needle 1 into the device, effectively preventing the sharp part of the needle from being exposed and reducing operational risks.

[0029] See Figure 2 Unlike existing technology devices, the cover 2 itself adopts a two-section structure. Its lower part is connected to the housing by threads, while the upper part utilizes its unique structural features to form a hollow structure after the cover 2 is combined with the housing. This design provides space for the internal mechanical structure.

[0030] It is worth noting that the two-section cap 2 achieves structural stability through screw fixing, effectively preventing the cap 2 assembly from separating. This design not only ensures the reliability of the cap 2 during long-term use, but also avoids the risks that may arise due to the cap 2 becoming loose.

[0031] Therefore, both sections of the cap 2 are designed with through holes 11 for inserting the injection needle 1.

[0032] See Figure 2 , Figure 3 , Figure 4 , Figure 5Furthermore, a drive ring 10 is rotatably connected inside the cover 2, and the drive ring 10 has multiple drive grooves 8. In addition, the cover 2 has multiple positioning grooves 12, which correspond one-to-one with the drive grooves 8 on the drive ring 10.

[0033] Therefore, this device achieves the purpose of changing the central axis of the driven rod 9 and the central axis of the cover 2 by inserting a driven rod 9 into each positioning groove 12 and the corresponding driving groove 8, utilizing the unequal distance between the two ends of each driving groove 8 and the central axis of the driving ring 10, the smooth transition of the inner wall of each driving groove 8, and the coincidence of the central line of each positioning groove 12 with the radius line of the cover 2.

[0034] Accordingly, a limiting member 7 is fitted on the outside of each driven rod 9. The limiting member 7 fits tightly against the injection needle 1. In actual operation, rotating the drive ring 10 can enhance the clamping effect of the limiting member 7 on the needle, making it easy for the operator to easily separate the syringe and the needle by pulling up the syringe. This design not only improves the convenience of operation but also ensures the safety of the operation process.

[0035] It should be noted that, as Figure 6 As shown, each driven rod 9 is designed in the form of a bolt. By using the bolt head itself and the limiting nut set at the bolt tail and screwed to the bolt, it can be fully guaranteed that there will be no longitudinal height change between the driven rod 9 and the cover 2. This design also helps to lock the two-section structure of the cover 2 and achieve the stability of the cover 2.

[0036] At the same time, such as Figure 5 As shown, the cover 2 itself has a two-section structure, and the drive ring 10 is located in the internal cavity of the cover 2. Therefore, by opening positioning grooves 12 on both sections of the cover 2, the position of the driven rod 9 can be further constrained, preventing the driven rod 9 from becoming unbalanced and overturning due to being constrained on only one side. The dual positioning design effectively ensures the stability and reliability of the device during operation.

[0037] It is important to emphasize that in practical applications, due to its bolt-like shape, the driven rod 9 has only a small contact area with the drive ring 10 and the cap 2. This reduces the frictional resistance experienced by the driven rod 9 during its movement. Simultaneously, by utilizing the contact between the limiting member 7 and the injection needle 1, and considering the short movement distance of the limiting member 7 itself, the device ensures that the limiting member 7 does not twist during the application of force when it contacts the injection needle 1. This ingenious design significantly improves operational accuracy.

[0038] Specifically, see Figure 3 , Figure 4To achieve the rotation of the drive ring 10, a drive gear 5 is connected to the outer side of the drive ring 10. A rack 6 is meshed and driven on one side of the drive gear 5. The sliding rack 6 can directly control the drive gear 5, thereby smoothly driving the drive ring 10 to rotate. The gear and rack 6 transmission mechanism is ingeniously designed, allowing the operator to easily manually control the movement of the device without relying on any additional energy.

[0039] It is worth noting that, such as Figure 1 As shown, in order to adapt to the actual application environment and the size of the injection needle 1, the size of the housing 3 and the cap 2 involved in this device are relatively small. Therefore, in actual operation, the operator can hold the housing 3 and the cap 2 with one hand, while the operator can insert or remove the syringe with the other hand.

[0040] Accordingly, to ensure convenient single-person operation and allow the operator to hold the housing 3 and control the position of the rack 6 with one hand, the device has a notch groove on the cover 2 for the rack 6. The rack 6 is located in the notch groove on the cover 2 and is slidably connected to the cover 2. This allows the operator to control the rack 6, which is located on the outside of the cover 2, using their thumb. This design eliminates the need for additional auxiliary tools during operation, improving convenience and efficiency.

[0041] It is worth noting that in actual operation, the operator typically only grasps the housing 3 at the moment the injection needle 1 is separated from the syringe, and during this process, easily manipulates the rack 6 to move in one direction using the thumb. This one-handed operation design ensures that the operator can quickly and safely dispose of sharps waste in emergency situations.

[0042] Therefore, to ensure convenience during repeated use and avoid additional operation time required for rack 6 to reset, a horizontal tension spring 4 with a central axis is movably connected to the side of the drive gear 5. The other end of the tension spring 4 is movably connected to the cover 2, thus providing the necessary reset force for the drive gear 5. This automatic reset mechanism not only improves operational convenience but also ensures the stability of the device during continuous use.

[0043] Therefore, when the tension spring 4 is not affected by external force, the driven rod 9 will naturally be positioned on the side of the drive groove 8 away from the central axis of the cap 2. At this time, the distance between the limiting members 7 should be at least greater than a portion of the diameter of the injection needle 1, so that the injection needle 1 can be directly inserted into the through hole 11. This design ensures that the injection needle 1 can be inserted smoothly and without obstruction, effectively avoiding jamming problems caused by size mismatch.

[0044] See Figure 6Specifically, the limiting member 7 includes a follower ring 701 sleeved on the outside of the driven rod 9, which cooperates with the driven rod 9. A contact member 703 is slidably connected to the follower ring 701 near the central axis of the cap 2. A compression spring 702 is provided between the contact member 703 and the follower ring 701, with its two axial ends abutting against the contact member 703 and the follower ring 701 respectively. This design allows the contact member 703 to tend to move away from the follower (i.e., closer to the central axis of the cap 2) using the compression spring 702. This ensures that when the driven rod 9 is located on the side of the drive groove 8 away from the central axis of the cap 2, the distance between the limiting members 7 is reduced to less than the distance between the upper ends of the injection needle 1 but slightly greater than the distance between the lower ends, effectively preventing the injection needle 1 from detaching from the housing between the limiting members 7. This design ensures the safe fixation of the injection needle 1 within the device, avoiding the risk of accidental detachment.

[0045] It should be noted that the presence of the compression spring 702 not only prevents the distance between the limiting members 7 from being too large, but also ensures that when the driven rod 9 is in the position of the drive groove 8 away from the central axis of the cap 2, and the operator inserts the injection needle 1 downward into the through hole 11, the interaction force between the tapered connecting part at the upper end of the injection needle 1 and the limiting member 7 is not too large, thus preventing the operator from properly inserting the injection needle 1. This design balances the convenience and safety of operation, ensuring a smooth operation process.

[0046] Furthermore, the device's constraint contact 703 includes a mounting block 7032, with a rubber elastic pad 7031 fixedly connected to the mounting block 7032 near the cap 2. The rubber elastic pad 7031 provides cushioning, preventing the limiting member 7 from rigidly colliding with the injection needle 1, avoiding needle breakage, and ensuring smooth subsequent cleaning. This design not only improves the device's durability but also ensures the integrity of the injection needle 1 during processing.

[0047] It is worth noting that when the driven rod 9 is in a position where the drive groove 8 is off-center from the central axis of the cap 2, the elastic pad 7031 engages tightly with the injection needle 1, thereby ensuring that the injection needle 1 is securely locked within the device. This design ensures that even in rugged outdoor conditions, the injection needle 1 can be safely fixed within the device, effectively preventing risks that may arise from needle movement.

[0048] In practical applications of this invention, when the user needs to dispose of the injection needle 1 after completing the injection:

[0049] First, the operator must hold the syringe and housing 3 firmly with both hands, and then accurately insert the injection needle 1 into the through hole 11.

[0050] Next, as the injection needle 1 continues to move downward along the central axis of the through hole 11, the tapered connecting part at the upper end of the injection needle 1 contacts the elastic pad 7031. At this time, the elastic pad 7031 is acted upon by the inclined surface of the tapered connecting part, and multiple elastic pads 7031 move simultaneously in a direction away from the central axis of the cap 2. Furthermore, the length of the compression spring 702 decreases, and the compression spring 702 accumulates elastic potential energy.

[0051] Subsequently, the operator presses the rack 6 simultaneously with their thumb, which increases the length of the tension spring 4 and accumulates elastic potential energy. At this time, the follower moves towards the central axis of the cap 2 along with the driven rod 9, and the compression spring 702 decreases in length and speed, accumulating a large amount of elastic potential energy. In this process, the upper tapered connection of the injection needle 1 is gradually pressed and fixed.

[0052] Then, the operator pulls the syringe upward to separate the syringe from the needle;

[0053] Next, when the operator releases the pushing force on the rack 6, the elastic potential energy stored in the tension spring 4 is released, driving the gear 5 to reset, and the compression spring 702 releases the stored elastic potential energy.

[0054] Finally, the operator slowly presses down the syringe, causing the injection needle 1 to gradually penetrate deeper into the receiving housing 3 until it is fully embedded. During this process, the elastic potential energy stored in the compression spring 702 undergoes a process of first rising (when the injection needle 1 at its maximum diameter touches the elastic pad 7031) and then falling (until the needle is fully inside the receiving housing 3).

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A field medical sharps collection device, comprising a housing, a cap (2) detachably connected to the upper end of the housing, and a through hole (11) through the cap (2), wherein an injection needle (1) is inserted into the through hole (11), characterized in that: The cover (2) has a hollow structure inside. A drive ring (10) is rotatably connected inside the cover (2). Multiple drive grooves (8) are opened through the drive ring (10). The distance between the two ends of each drive groove (8) and the central axis of the drive ring (10) is not equal. The inner wall of each drive groove (8) is smoothly transitioned. The cover (2) has multiple positioning slots (12) through it. The multiple positioning slots (12) correspond one-to-one with multiple driving slots (8). Furthermore, the center line of each positioning slot (12) coincides with the radius line of the cover (2). Each positioning slot (12) and the corresponding driving slot (8) are connected together with a driven rod (9). Each of the driven rods (9) is fitted with a limiting member (7) on its outer side, and the injection needle (1) is disposed between the multiple limiting members (7), and the limiting member (7) abuts against the injection needle (1).

2. The field medical sharps collection device according to claim 1, characterized in that: The drive ring (10) is keyed to the outside of the drive gear (5), and a rack (6) is meshed and connected to one side of the drive gear (5). Furthermore, a notch is provided on the cover (2) for the rack (6), and the rack (6) is located in the notch and is slidably connected to the cover (2).

3. The field medical sharps collection device according to claim 2, characterized in that: The drive gear (5) is movably connected to a tension spring (4) with its central axis horizontal. The other end of the tension spring (4) is movably connected to the cover (2). When the tension spring (4) is not affected by external force, the driven rod (9) is located on the side of the drive groove (8) away from the central axis of the cover (2).

4. The field medical sharps collection device according to claim 1, characterized in that: The limiting member (7) includes a follower ring (701) sleeved on the outside of the driven rod (9). The follower ring (701) is slidably connected to a contact member (703) on the side near the central axis of the cover (2). A compression spring (702) is provided between the contact member (703) and the follower ring (701). The two axial ends of the compression spring (702) abut against the contact member (703) and the follower ring (701) respectively.

5. The field medical sharps collection device according to claim 4, characterized in that: The contact element (703) includes a mounting block (7032), and a rubber elastic pad (7031) is fixedly connected to the side of the mounting block (7032) near the cover (2).

6. The field medical sharps collection device according to claim 5, characterized in that: When the driven rod (9) is located on the side of the drive groove (8) away from the central axis of the cap (2), the elastic pad (7031) is in interference fit with the injection needle (1), and when the driven rod (9) is located on the side of the drive groove (8) close to the central axis of the cap (2), the distance between the plurality of contacts (703) is greater than the lower diameter of the injection needle (1).

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