Pressing type needle special for infusion port

Abstract

The utility model provides a pressing type infusion port special needle, which relates to the technical field of medical instruments and comprises a fixed disc, the top of the fixed disc is connected with a connecting ring, the top of the connecting ring is fixedly connected with a fixed reset guide structure, and a pressing puncture structure is sleeved above the fixed reset guide structure. When the pressing puncture structure is pressed, the pressing puncture structure can downwards extrude and puncture the skin, when the device is used for puncturing, the hand of a medical worker does not need to make contact with a puncture needle, the puncture needle is located in the device during puncturing and cannot be exposed outside, meanwhile, the device has the limiting and positioning puncture function, puncture is accurate, secondary puncture is not needed, and the device is convenient to use. Pains of patients are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a special needle for a press-type infusion port. Background Art

[0002] An infusion port, also known as a venous infusion port or a completely implanted drug infusion device, is a closed venous infusion system completely implanted into the human body.

[0003] Currently, the special needle for the infusion port in use requires manual fixation of the infusion port base to perform puncture or needle removal. During this process, needle stick injuries are likely to occur, or inaccurate puncture may lead to the inability to infuse, and re-puncture is required, increasing the pain of the patient. Therefore, we propose a special needle for a press-type infusion port. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art. The special needle for the infusion port in use requires manual fixation of the infusion port base to perform puncture or needle removal. During this process, needle stick injuries are likely to occur, or inaccurate puncture may lead to the inability to infuse, and re-puncture is required, increasing the pain of the patient.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A special needle for a press-type infusion port includes a fixed disk. A connecting ring is connected to the top of the fixed disk. A fixed reset guiding structure is fixedly connected to the top of the connecting ring. A pressing and puncturing structure is sleeved above the fixed reset guiding structure. When the pressing and puncturing structure is pressed, the pressing and puncturing structure will squeeze downward to pierce the skin and rotate to be connected and fixed with the fixed reset guiding structure. When the pressing and puncturing structure is rotated in the reverse direction, the pressing and puncturing structure can be ejected by the fixed reset guiding structure.

[0007] Preferably, the fixed reset guiding structure includes a guiding cylinder. A connecting cylinder is fixedly connected to the bottom of the guiding cylinder. A first connecting thread is provided on the outer surface of the connecting cylinder.

[0008] Preferably, a plurality of reset springs are provided on the top of the connecting cylinder and outside the guiding cylinder. The plurality of reset springs are fixedly connected to the connecting cylinder.

[0009] Preferably, the pressing and puncturing structure includes an outer sleeve. An inner mounting cylinder is provided inside the outer sleeve. The inner mounting cylinder is connected to the outer sleeve through a connecting and fixing block.

[0010] Preferably, a puncture needle is provided at the center of the inner mounting cylinder. Second connecting threads are provided on the peripheral walls inside the outer sleeve and near the bottom.

[0011] Preferably, a plurality of limiting baffles are provided on the peripheral walls inside the outer sleeve and above the second connecting thread, and an infusion extension tube is connected to the top of the inner mounting cylinder.

[0012] Preferably, the second connecting thread of the inner mounting cylinder is connected to the first connecting thread of the fixed reset guiding structure, the reset spring is used in cooperation with the limiting baffle, the inner mounting cylinder and the guiding cylinder are not fixed, and the guiding cylinder and the connecting cylinder are fixedly connected.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In the present utility model, when the device is punctured, the hands of medical staff do not need to contact the puncture needle, and the puncture needle is inside the device during puncture and will not be exposed. At the same time, it has the function of limiting and positioning puncture, with accurate puncture, no need for secondary puncture, and reduced pain for patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic diagram of the main structure of a push-button type infusion port special needle provided by the present utility model;

[0016] Figure 2 FIG. is a schematic diagram of the fixed reset guiding structure of a push-button type infusion port special needle provided by the present utility model;

[0017] Figure 3 FIG. is a schematic diagram of the internal structure of the push-button puncture structure of a push-button type infusion port special needle provided by the present utility model;

[0018] Figure 4 FIG. is a schematic diagram of the main sectional structure of a push-button type infusion port special needle provided by the present utility model.

[0019] Legend: 1, fixed disk; 2, connecting ring; 3, fixed reset guiding structure; 31, guiding cylinder; 32, connecting cylinder; 33, first connecting thread; 34, reset spring; 4, push-button puncture structure; 41, outer sleeve; 42, inner mounting cylinder; 43, connecting and fixing block; 44, puncture needle; 45, second connecting thread; 46, limiting baffle; 47, infusion extension tube. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] To facilitate the understanding of the present utility model, the following will make a more comprehensive description of the present utility model with reference to the relevant content. Several embodiments of the present utility model are given. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used herein in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] Embodiment 1

[0025] As Figures 1-4 shown, the present utility model provides a technical solution: a special needle for a press-type infusion port, including a fixing plate 1. A connecting ring 2 is connected to the top of the fixing plate 1. A fixing and reset guiding structure 3 is fixedly connected to the top of the connecting ring 2. A pressing and puncturing structure 4 is sleeved above the fixing and reset guiding structure 3. When pressing the pressing and puncturing structure 4, the fixing plate 1, the connecting ring 2, the fixing and reset guiding structure 3 and the pressing and puncturing structure 4 are all made of transparent visible materials. The pressing and puncturing structure 4 will press downward to pierce the skin and rotate to be connected and fixed with the fixing and reset guiding structure 3. When rotating the pressing and puncturing structure 4 in the reverse direction, the pressing and puncturing structure 4 can be ejected by the fixing and reset guiding structure 3. When the device is performing puncture, the hands of medical staff do not need to contact the puncture needle 44, and the puncture needle 44 is inside the device during puncture and will not be exposed outside. At the same time, it has the function of limiting and positioning puncture, with accurate puncture and no need for secondary puncture, reducing the pain of patients.

[0026] Embodiment 2

[0027] As Figures 1-4 shown, the present utility model provides a technical solution: the fixing and reset guiding structure 3 includes a guiding cylinder 31. A connecting cylinder 32 is fixedly connected to the bottom of the guiding cylinder 31. A first connecting thread 33 is provided on the outer surface of the connecting cylinder 32.

[0028] At the top of the connecting cylinder 32 and outside the guiding cylinder 31, a number of reset springs 34 are provided. The number of reset springs 34 is fixedly connected to the connecting cylinder 32. The reset springs 34 will release energy to bounce up the limit baffle 46, and then the puncture needle 44 can be ejected out of the skin.

[0029] The pressing puncture structure 4 includes an outer sleeve 41. Inside the outer sleeve 41, an inner mounting cylinder 42 is provided. The inner mounting cylinder 42 and the outer sleeve 41 are connected by a connecting fixing block 43.

[0030] At the center of the inner mounting cylinder 42, a puncture needle 44 is provided. On the surrounding walls inside the outer sleeve 41 and near the bottom, a second connecting thread 45 is provided.

[0031] On the surrounding walls inside the outer sleeve 41 and above the second connecting thread 45, a number of limit baffles 46 are provided. The top of the inner mounting cylinder 42 is connected to an infusion extension tube 47.

[0032] The second connecting thread 45 of the inner mounting cylinder 42 is connected to the first connecting thread 33 of the fixed reset guiding structure 3. The reset spring 34 and the limit baffle 46 are used in cooperation. The inner mounting cylinder 42 and the guiding cylinder 31 are not fixed. The guiding cylinder 31 and the connecting cylinder 32 are fixedly connected. When the placement is completed, at this time, when pressing the outer sleeve 41, under the action of the pressing force, the outer sleeve 41 will drive the inner mounting cylinder 42 to move downward together through the connecting fixing block 43. And the inner mounting cylinder 42 is located inside the guiding cylinder 31. During the movement, the guiding cylinder 31 will limit the inner mounting cylinder 42. Thus, during the pressing process, the puncture needle 44 located inside the inner mounting cylinder 42 will not shift, so that the puncture needle 44 can be accurately inserted into the patient's skin. When continuing to press, the puncture needle 44 will enter the infusion port base in the patient's skin through the inside of the connecting cylinder 32, the connecting ring 2 and the fixed disk 1. When the insertion is completed, just rotate the outer sleeve 41 so that the second connecting thread 45 inside the outer sleeve 41 is connected to the first connecting thread 33 of the connecting cylinder 32 and forms a fixation.

[0033] The working process of the present utility model: When using a pressing type infusion port special needle, first place the fixed disk 1 at the infusion port base located at the patient's skin. Since the inner side wall of the fixed disk 1 is provided with anti-slip threads, the fixed disk 1 can be well fixed to the patient's skin to prevent sliding.

[0034] After placement, press the outer sleeve 41 at this time. Under the action of the pressing force, the outer sleeve 41 will drive the inner mounting cylinder 42 to move downward together through the connecting fixing block 43. The inner mounting cylinder 42 is located inside the guiding cylinder 31. During the movement, the guiding cylinder 31 will limit the inner mounting cylinder 42. Thus, during the pressing process, the puncture needle 44 located inside the inner mounting cylinder 42 will not deviate, enabling the puncture needle 44 to accurately insert into the patient's skin. When continuing to press, the puncture needle 44 will enter the infusion port base in the patient's skin through the inside of the connecting cylinder 32, the connecting ring 2, and the fixing plate 1. After the insertion is completed, just rotate the outer sleeve 41 so that the second connecting thread 45 inside the outer sleeve 41 is connected to the first connecting thread 33 of the connecting cylinder 32 and forms a fixation.

[0035] It should be noted that during the connection process, the limiting baffle 46 will simultaneously squeeze the return spring 34, causing the return spring 34 to store energy. Thus, the puncture connection work between the puncture needle 44 and the infusion port base can be completed. When it is necessary to pull out, just rotate the outer sleeve 41 in the reverse direction, so that the second connecting thread 45 and the first connecting thread 33 are disengaged from each other. After the disengagement, the return spring 34 will release energy to bounce up the limiting baffle 46, and the puncture needle 44 can be ejected out of the skin. During the whole puncture process, the hands of medical staff do not need to contact the puncture needle 44, and the puncture needle 44 is inside the device during puncture and will not be exposed outside. At the same time, it has limited-position and positioning puncture, accurate puncture, no need for secondary puncture, and reduces the pain of patients.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special needle for a press-type infusion port, comprising a fixing plate (1), characterized in that: A connection ring (2) is connected to the top of the fixed disk (1). A fixed reset guiding structure (3) is fixedly connected to the top of the connection ring (2). A pressing and puncturing structure (4) is sleeved above the fixed reset guiding structure (3). When the pressing and puncturing structure (4) is pressed, the pressing and puncturing structure (4) will squeeze downward to pierce the skin and rotate to be connected and fixed with the fixed reset guiding structure (3). When the pressing and puncturing structure (4) is rotated in the reverse direction, the pressing and puncturing structure (4) can be ejected by the fixed reset guiding structure (3).

2. The special needle for a press-type infusion port according to claim 1, wherein: The fixed reset guiding structure (3) includes a guiding cylinder (31). A connection cylinder (32) is fixedly connected to the bottom of the guiding cylinder (31). A first connection thread (33) is provided on the outer surface of the connection cylinder (32).

3. The special needle for a press-type infusion port according to claim 2, characterized in that: A plurality of reset springs (34) are provided on the top of the connection cylinder (32) and outside the guiding cylinder (31). The plurality of reset springs (34) are fixedly connected to the connection cylinder (32).

4. A special needle for a press-type infusion port according to claim 3, characterized in that: The pressing and puncturing structure (4) includes an outer sleeve (41). An inner mounting cylinder (42) is provided inside the outer sleeve (41). The inner mounting cylinder (42) is connected to the outer sleeve (41) through a connection fixing block (43).

5. The special needle for a push-type infusion port according to claim 4, wherein: A puncture needle (44) is provided at the center of the inner mounting cylinder (42). Second connection threads (45) are provided on the peripheral walls inside the outer sleeve (41) and near the bottom.

6. The special needle for a press-type infusion port according to claim 5, wherein: A plurality of limiting baffles (46) are provided on the peripheral walls inside the outer sleeve (41) and above the second connection threads (45). An infusion extension tube (47) is connected to the top of the inner mounting cylinder (42).

7. The special needle for a press-type infusion port according to claim 6, wherein: The second connection threads (45) of the inner mounting cylinder (42) are connected to the first connection threads (33) of the fixed reset guiding structure (3). The reset springs (34) and the limiting baffles (46) are used in cooperation. The inner mounting cylinder (42) and the guiding cylinder (31) are not fixed. The guiding cylinder (31) and the connection cylinder (32) are fixedly connected.

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