Special needle for safe implantable dosing device
By designing a special needle for a safe implantable drug delivery device, the risk of needle tip puncture and secondary cross infection when pulled out is solved, and higher safety and convenience of use are achieved.
Patent Information
- Application Number
- CN202421082925.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-17
AI Technical Summary
When removing the needle for the implantable drug delivery device, the needle tip may stab the medical staff due to recoil, and the needle stabbing cannot be effectively prevented after use, resulting in the risk of secondary cross-infection.
A special needle for safe implantable drug delivery device is designed, using a needle assembly including a safety needle, butterfly wing needle handle, protective sleeve and safety device. Through the cooperation of the shrapnel limit hole structure and slider, the safety needle is completely hidden in the safety device when pulled out, and avoid needle tip puncture.
It effectively avoids needle tip puncture caused by recoil when pulling out the safety needle, reduces the risk of secondary cross infection, and improves safety during use.
Smart Images
Figure CN222585213U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a special needle for a safe implantable drug delivery device. Background Art
[0002] In the clinical treatment of malignant tumors, chemotherapy is one of the most important treatment methods, and the main route of administration in chemotherapy is intravenous infusion. The development of intravenous administration has gone through scalp steel needles, intravenous indwelling needles, central venous catheters, peripherally inserted central venous catheters, and implantable drug delivery devices. As a completely implanted subcutaneous intravenous drug delivery device, the implantable drug delivery device is compared with central venous catheters and peripherally inserted central venous catheters. It has the advantages of achieving long-term infusion with a single implant, reducing the pain of repeated venous punctures for patients, and relatively reducing maintenance time and costs. It greatly reduces the impact of daily life on patients and is widely used. The special needle for the anti-needlestick implantable drug delivery device is a special infusion needle for the implantable drug delivery device.
[0003] After the infusion of the special needle of the implantable drug delivery device is completed, the medical staff needs to pull out the special needle of the implantable drug delivery device. In the traditional needle removal process, the medical staff needs to fix the base of the infusion port while pulling out the needle. Because the special needle tube will generate a certain recoil force at the moment of pulling out the infusion port, it may cause injuries such as the needle tip stabbing the medical staff. The special needle is a disposable item and will be recycled after use. In order to avoid needle stabbings during garbage disposal or recycling, resulting in secondary cross-infection, the existing special needles must be attached with a safety cover or a safety protection structure to protect the used special needle. For this reason, a safe special needle for an implantable drug delivery device is proposed. Utility Model Content
[0004] The purpose of the utility model is to provide a special needle for a safe implantable drug delivery device, aiming to solve the problems raised in the above-mentioned background technology.
[0005] The embodiment of the utility model is implemented as follows: a special needle for a safety implantable drug delivery device includes a needle assembly and a pipeline, wherein the needle assembly includes a safety needle, a butterfly needle handle, a protective sleeve and a safety device;
[0006] The butterfly wing needle handle is fixedly connected to the safety needle;
[0007] The protective sleeve is arranged on the outside of the safety needle;
[0008] The safety device comprises a sponge ring, a safety device seat, a safety device cover, a spring sheet and a slide block;
[0009] The sponge ring is fixedly connected to the safety device seat;
[0010] A plug-in structure is provided between the safety device seat and the safety device cover to form a detachable connection;
[0011] The spring piece is limited between the safety device seat and the safety device cover, a deformable connecting rib is provided on the spring piece, a limiting hole structure is provided on the deformable connecting rib, and the flattened limiting part of the safety needle is connected to the limiting hole structure;
[0012] The slider is arranged in the spring sheet and expands the spring sheet, and the slider is connected to the deformable connecting rib.
[0013] Furthermore, a circle of convex edges is fixed on the outer side of the slider, a limiting hole is provided on the safety device cover, the outer diameter of the slider is the same as the inner diameter of the limiting hole, and the distance between the convex edges is larger than the inner diameter of the limiting hole.
[0014] Furthermore, a positioning hole is provided on the safety device cover, and the butterfly wing needle handle is plugged into the positioning hole.
[0015] Furthermore, the pipeline includes: a connecting seat, a protective cap, a hose, and a Robert clamp.
[0016] A protective cap connected to the connecting seat;
[0017] A hose, one end of which is fixedly connected to the butterfly needle handle and communicates with the safety needle, and the other end of which is fixedly connected to the connecting seat;
[0018] A Robert clamp is provided on the hose.
[0019] Furthermore, the butterfly wing needle handle and the safety needle are fixed by perforating and gluing.
[0020] Compared with the prior art, the beneficial effects of the utility model are:
[0021] The safety needle for the implantable drug delivery device is designed such that when the safety needle is pulled out, the spring piece limit hole structure limits the movement of the safety needle until the slider is limited by the positioning hole on the safety device cover and cannot move. At this time, the slider is separated from the spring piece, and the spring piece is deformed, prompting the spring piece to close. The flattened limit position of the safety needle to the tip of the safety needle is completely hidden in the safety device, thereby avoiding injuries such as the needle tip stabbing medical staff due to recoil when the safety needle is pulled out. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the structure of a special needle for a safe implantable drug delivery device.
[0023] Figure 2 This is a schematic diagram of the structure of the dedicated needle of the safety implantable drug delivery device in the inactivated state.
[0024] Figure 3This is a schematic diagram of the structure of the activation state of the dedicated needle of the safety implantable drug delivery device.
[0025] Figure 4 This is a schematic diagram of the structure in which the shrapnel in the needle of a safety implantable drug delivery device is stretched open.
[0026] Figure 5 This is a schematic diagram of the structure of the closure of the spring clip in the needle of a safe implantable drug delivery device.
[0027] Figure 6 This is a structural schematic diagram of the connection between the flattened limit portion of the safety needle in the special needle for a safety implantable drug delivery device and the limit hole structure.
[0028] In the figure: a sponge ring 1, a safety device seat 2, a safety needle 3, a protective sleeve 4, a connecting seat 5, a protective cap 6, a Robert clamp 7, a hose 8, a butterfly needle handle 9, a spring 10, a slider 11, a safety device cover 12, and a deformable connecting rib 13. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0030] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0031] like Figure 1-6 As shown, a special needle for a safety implantable drug delivery device provided by an embodiment of the utility model includes a needle assembly and a pipeline, wherein the needle assembly includes: a safety needle 3, a butterfly needle handle 9, a protective cover 4 and a safety device;
[0032] The butterfly wing needle handle 9 is fixedly connected to the safety needle 3;
[0033] The protective sleeve 4 is sleeved on the outside of the safety needle 3;
[0034] The safety device comprises a sponge ring 1 , a safety device seat 2 , a safety device cover 12 , a spring piece 10 and a sliding block 11 .
[0035] The sponge ring 1 is fixedly connected to the safety device seat 2; the sponge material of the sponge ring 1 contacts the human body to increase the comfort of the human body;
[0036] A plug-in structure is provided between the safety device seat 2 and the safety device cover 12 to form a detachable connection;
[0037] The spring piece 10 is limited between the safety device seat 2 and the safety device cover 12, and a deformable connecting rib 13 is provided on the spring piece 10. A limiting hole structure is provided on the deformable connecting rib 13, and the flattened limiting position of the safety needle 3 is connected to the limiting hole structure;
[0038] The slider 11 is disposed in the spring sheet 10 and expands the spring sheet 10 . The slider 11 is connected to the deformable connecting rib 13 .
[0039] In the embodiment of the utility model, in order to ensure comfort, a sponge ring 1 is added, the height of the outer shape is reduced and the limiting distance of the safety needle 3 is ensured to be appropriate;
[0040] The setting of the slider 11 ensures that the flattening limit position of the safety needle 3 to the needle tip of the safety needle 3 is completely hidden in the safety device.
[0041] The spring piece 10 is limited between the safety device seat 2 and the safety device cover 12 to ensure that the spring piece 10 cannot move in a large range in the extraction direction when the slider 11 is pulled. The benefit of the slider 11 stretching the spring piece 10 is to avoid hard friction between the safety pin 3 and the spring piece 10, reduce the extraction resistance and the risk of damage to the spring piece 10, and it can be slid open once. After a certain distance, the slider 11 is no longer in contact with the deformed surface of the spring piece 10, and the spring piece 10 is closed, causing the slider 11 to be unable to retreat.
[0042] When the butterfly wing needle handle 9 pulls the safety needle 3, the flattened limit position of the safety needle 3 will abut against the limit hole structure, so that when the safety needle 3 is pulled out, the limit hole structure limits the movement of the safety needle 3. When it reaches a certain distance, the limit hole structure limits and prompts the slider 11 to move. The movement process is irreversible until the safety device cover 12 limits the movement of the slider 11 according to the distance. The slider 11 is limited by the positioning hole on the safety device cover 12 and cannot move. At this time, the slider 11 is separated from the elastic member 10, and the elastic member 10 is deformed, prompting the elastic piece 10 to close. This avoids injuries such as needle tip stabbing medical staff due to recoil when the safety needle 3 is pulled out.
[0043] like Figure 2 and Figure 3 As shown, as a preferred embodiment of the utility model, a circle of convex edges is fixed on the outer side of the slider 11, a limiting hole is provided on the safety device cover 12, the outer diameter of the slider 11 is the same as the inner diameter of the limiting hole, and the distance between the convex edges is larger than the inner diameter of the limiting hole.
[0044] In the embodiment of the utility model, the above arrangement allows the slider 11 to move in the limiting hole and ensures that the slider 11 will not completely fall out.
[0045] like Figure 2 As shown, as a preferred embodiment of the utility model, a positioning hole is provided on the safety device cover 12, and the butterfly wing needle handle 9 is plugged into the positioning hole.
[0046] In the embodiment of the utility model, the protrusion of the butterfly wing needle handle 9 can be taken out from the positioning hole.
[0047] like Figure 1 As shown, as a preferred embodiment of the utility model, the pipeline includes: a connecting seat 5, a protective cap 6, a hose 8, and a Robert clamp 7.
[0048] A protective cap 6 connected to the connecting seat 5;
[0049] A hose 8, one end of which is fixedly connected to the butterfly needle handle 9 and communicates with the safety needle 3, and the other end of which is fixedly connected to the connecting seat 5;
[0050] A Robert clamp 7 is provided on a hose 8 .
[0051] like Figure 1 As shown, as a preferred embodiment of the present utility model, the butterfly wing needle handle 9 and the safety needle 3 are fixed by perforating and gluing.
[0052] In the embodiment of the utility model, when the butterfly needle handle 9 is pulled open, the flattened limit portion of the safety needle 3 will be connected to the limit hole structure, so that when the safety needle 3 is pulled out, the spring limit hole structure limits the movement of the safety needle 3.
[0053] The working principle of the utility model is:
[0054] In the process of the butterfly needle handle 9 pulling the safety needle 3 apart, the flattened limit position of the safety needle 3 will abut against the limit hole structure, so that when the safety needle 3 is pulled out, the limit hole structure limits the movement of the safety needle 3. When the safety needle 3 reaches a certain distance, the limit hole structure limits and prompts the slider 11 to move until the safety device cover 12 limits the movement of the slider 11 according to the distance. The slider 11 is limited by the positioning hole on the safety device cover 12 and cannot move. At this time, the slider 11 is separated from the elastic member 10, and the elastic member 10 is deformed, prompting the elastic piece 10 to close. This avoids injuries such as needle tip stabbing medical staff due to recoil when the safety needle 3 is pulled out.
[0055] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.
Claims
1. A special needle for a safe implantable drug delivery device, comprising a needle assembly and a pipeline, characterized in that: The needle assembly comprises a safety needle, a butterfly-wing needle handle, a protective sleeve and a safety device; The butterfly wing needle handle is fixedly connected to the safety needle; The protective sleeve is arranged on the outside of the safety needle; The safety device comprises a sponge ring, a safety device seat, a safety device cover, a spring sheet and a slide block; The sponge ring is fixedly connected to the safety device seat; A plug-in structure is provided between the safety device seat and the safety device cover to form a detachable connection; The spring piece is limited between the safety device seat and the safety device cover, a deformable connecting rib is provided on the spring piece, a limiting hole structure is provided on the deformable connecting rib, and the flattened limiting part of the safety needle is connected to the limiting hole structure; The slider is arranged in the spring sheet and expands the spring sheet, and the slider is connected to the deformable connecting rib.
2. The safety-type implantable drug delivery device dedicated needle according to claim 1, characterized in that: A convex edge is fixed on the outer side of the slider, a limiting hole is provided on the safety device cover, the outer diameter of the slider is the same as the inner diameter of the limiting hole, and the distance between the convex edges is larger than the inner diameter of the limiting hole.
3. The safety-type implantable drug delivery device dedicated needle according to claim 1, characterized in that: The safety device cover is provided with a positioning hole, and the butterfly wing needle handle is plugged into the positioning hole.
4. The safety-type implantable drug delivery device dedicated needle according to claim 1, characterized in that: The pipeline includes: a connecting seat, a protective cap, a hose, and a Robert clamp; A protective cap connected to the connecting seat; A hose, one end of which is fixedly connected to the butterfly needle handle and communicates with the safety needle, and the other end of which is fixedly connected to the connecting seat; A Robert clamp is provided on the hose.
5. The safety-type implantable drug delivery device dedicated needle according to claim 1, characterized in that: The butterfly wing needle handle and the safety needle are fixed by perforating and gluing.