Puncture and liquid extraction device with fixation structure

Abstract

The utility model discloses a puncture liquid extraction device, including main part, hopper structure, outer sleeve, needle seat, needle core, catheter and fixed structure, the main part is hollow structure, and the hopper structure sets up in the main part, is located the first end of main part, and the smaller one end of hopper structure inner diameter is connected outer sleeve, and outer sleeve extends from the first end of main part, needle seat sets up in the second end of main part, and needle seat connects needle core, and needle core passes through hopper structure and outer sleeve and extends from the main part, the main part has third end, and one end of catheter is connected the third end of main part, fixed structure includes center fixed area and the periphery fixed area of surrounding center fixed area, and center fixed area is used for sticking catheter, and periphery fixed area is used for sticking patient skin, the utility model can avoid needle body from falling off or wounding patient in the liquid extraction process from human body, effectively prevent the entrance of outer sleeve to stick patient body tissue and influence liquid extraction process, ensure that liquid extraction process can carry out smoothly.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a puncture and aspiration device with a fixed structure. Background Technology

[0002] In tumor treatment, aspiration devices are often used to extract fluid, such as pleural effusion, abdominal effusion, pericardial effusion, and fluid from other parts of the body. This not only prevents water accumulation in the affected area but also allows for the examination of the extracted fluid to identify the cause of the disease.

[0003] Existing puncture and aspiration devices rely on inserting a steel needle into the patient's body to extract the accumulated fluid, which is then drained through a catheter and collected in a specific container. The needle is prone to detaching from the body during this process, and the steel needle must remain inserted into the patient's body throughout the entire aspiration process, which can easily injure the patient. In addition, the steel needle entry point can easily adhere to the patient's body tissue, affecting the aspiration process. Utility Model Content

[0004] In view of the above-mentioned defects or improvement needs of the existing technology, this utility model provides a puncture and aspiration device that can prevent the needle from falling out of the body or puncturing the patient during the aspiration process, ensure that the aspiration process can be carried out smoothly, effectively prevent the inlet of the outer cannula from adhering to the patient's body tissue and affecting the aspiration process, and significantly reduce the pressure on both doctors and patients during the aspiration process.

[0005] To achieve the above objectives, this utility model provides a puncture and aspiration device, comprising a main body, a funnel structure, an outer tube, a needle hub, a needle core, a catheter, and a fixing structure; the main body is hollow, the funnel structure is disposed inside the main body at the first end of the main body, the smaller inner diameter end of the funnel structure is connected to the outer tube, and the outer tube extends out from the first end of the main body; the needle hub is disposed at the second end of the main body, the needle hub is connected to the needle core, and the needle core extends out from the main body through the funnel structure and the outer tube; the main body has a third end, one end of the catheter is connected to the third end of the main body; the fixing structure includes a central fixing area and a peripheral fixing area surrounding the central fixing area, the central fixing area being used to adhere the catheter, and the peripheral fixing area being used to adhere the patient's skin.

[0006] In some implementations, the peripheral fixed area forms a closed enclosure structure around the central fixed area.

[0007] In some embodiments, the peripheral fixing area is disconnected at a first position and a second position to form a first half-region and a second half-region, which are connected by a central fixing area; the first position and the second position are located on both sides of the central fixing area.

[0008] In some implementations, after the central fixation area is adhered to the catheter for one week, a further length L of the portion of the central fixation area on both sides of the catheter is adhered to form a buffer zone; the remaining portion of the central fixation area on both sides of the buffer zone is used to adhere to the patient's skin together with the peripheral fixation area.

[0009] In some implementations, the length L of the buffer strip is 5 mm to 15 mm.

[0010] In some implementations, the sidewalls of the outer sleeve have a perforated structure.

[0011] In some implementations, the perforation is located 2 mm to 7 mm from the inlet of the outer sleeve.

[0012] In some implementations, the hole structure is a single hole.

[0013] In some implementations, there are multiple hole structures.

[0014] In some embodiments, multiple hole structures are evenly distributed on the sidewall of the outer tube and arranged in a spiral pattern.

[0015] In summary, compared with the prior art, the above-described technical solution conceived by this utility model has the following beneficial effects: The catheter is fixed using a fixing structure, which has a central fixing area and a peripheral fixing area. The peripheral fixing area surrounds and connects to the central fixing area. The catheter is adhered to the central fixing area, and the human body is adhered to the peripheral fixing area. This structure can firmly adhere the catheter to the appropriate part of the patient's body. The central fixing area adheres to the catheter around its circumference and keeps the catheter at a certain distance from the human body, allowing the catheter to move within a reasonable range, forming a buffer zone, and preventing the catheter from shaking during operation and causing the inserted part to fall out of the body. An outer sheath is provided outside the needle core for puncture. During the procedure, the needle core and outer cannula are inserted into the body together, and then the needle core is withdrawn, leaving only the outer cannula inside the body. Because the outer cannula is soft, it can prevent injury to the patient during fluid aspiration. An adapter is installed at the end of the catheter, which has multiple output branches. Each output branch is equipped with a shut-off valve, which controls the opening and closing of the output branch. The end of each output branch can be connected to a piston-type collection bottle. By operating the shut-off valve and the piston-type collection bottle, a suitable negative pressure environment is created inside the puncture and aspiration device to ensure that the fluid aspiration process can proceed smoothly. An additional hole structure is provided on the outer cannula near the inlet to prevent the inlet of the outer cannula from adhering to the patient's body tissue and affecting the fluid aspiration process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the puncture and aspiration device according to an embodiment of the present invention;

[0017] Figure 2This is a schematic diagram showing the distribution of the hole structure of the outer sleeve in an embodiment of this utility model;

[0018] Figure 3 This is the projection of the hole structure of the outer sleeve along the axial direction of the outer sleeve in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the fixing structure according to an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the middle fixing area of ​​the fixing structure of this utility model embodiment after the conduit is adhered around one ring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0022] like Figure 1 As shown, the puncture and aspiration device of this utility model embodiment includes a main body 101, a funnel structure 103, an outer tube 105, a needle holder 107, and a needle core 109. The main body 101 is a hollow structure. The funnel structure 103 is disposed inside the main body 101 at its first end. The end of the funnel structure 103 with a smaller inner diameter is connected to the outer tube 105, which extends outward from the first end of the main body 101. The needle holder 107 is disposed at the second end of the main body 101 and is connected to the needle core 109. The needle core 109 extends outward from the main body 101 through the funnel structure 103 and the outer tube 105.

[0023] In some embodiments, the needle core 109 is made of stainless steel and has a sharp end that passes through the outer cannula 105 for insertion into the patient's body. In some embodiments, the outer cannula 105 is made of soft medical-grade plastic and has a diameter slightly larger than that of the needle core 109. In some embodiments, the outer cannula 105 has different diameters to accommodate different patients' physical conditions and puncture / aspiration needs. In some embodiments, the diameter of the outer cannula 105 is 1.3 mm to 1.6 mm. In some embodiments, the length of the outer cannula 105 extending from the first end of the body 101 is 70 mm to 90 mm.

[0024] During puncture, the needle core 109 and the outer cannula 105 are inserted into the patient's body together. After successful puncture, the needle core is removed using the needle hub 107, leaving only the outer cannula 105 inside the patient's body. Because the outer cannula is soft and can bend according to the shape of human tissue, it can prevent injury to the patient during fluid aspiration.

[0025] Furthermore, the puncture and aspiration device of this embodiment also includes an isolation plug 111 and a protective sleeve 113. The isolation plug 111 is disposed inside the main body 101, located between the needle seat 107 and the funnel structure 103, and the needle core 109 extends out from inside the main body 101 through the isolation plug 111, the funnel structure 103, and the outer sleeve 105. The isolation plug 111 is used to prevent microorganisms from invading the main body 101, effectively reducing the chance of external bacteria and microorganisms entering the interior of the main body 101 during the puncture process, thus reducing the risk of infection. The protective sleeve 113 is fitted over the first end of the main body 101 through the outer sleeve 105 and the needle core 109, and is used to protect the outer sleeve 105 and the needle core 109 to prevent external bacteria from entering.

[0026] Furthermore, the puncture and aspiration device of this embodiment also includes a catheter 115, an adapter 117, and a piston-type collection bottle (not shown in the figure). The main body 101 has a third end 119, one end of the catheter 115 is connected to the third end 119 of the main body 101, and the other end of the catheter 115 is connected to the input end of the adapter 117. The adapter 117 has multiple output branches, each of which is equipped with a shut-off valve, and the end of each output branch can form a sealed connection with the piston-type collection bottle. The shut-off valve is used to control the opening and closing of the output branches. In some embodiments, the piston-type collection bottle is a syringe structure.

[0027] During puncture, the needle core 109 and the outer cannula 105 are inserted into the patient's body together. After successful puncture, the needle core is removed using the needle hub 107, leaving only the outer cannula 105 in the patient's body. At least one output branch of the adapter 117 is connected to a piston-type collection bottle. The shut-off valve of the output branch is controlled to open the output branch, and the shut-off valves of other output branches are controlled to close the other output branches. The piston-type collection bottle is drawn back to create a negative pressure environment inside the puncture and aspiration device. Under the action of negative pressure, the fluid in the patient's body quickly enters the main body 101 through the outer cannula 105 and the funnel structure 103, then enters the catheter 115 through the third end 119 of the main body 101, and finally enters the piston-type collection bottle through the adapter 117.

[0028] Multiple output branches are provided for the adapter 117, facilitating flexible adjustment of the negative pressure environment inside the puncture and aspiration device and providing convenience for the rapid collection of fluid accumulated in the patient. Specifically, as shown in... Figure 1Taking the structure shown as an example, the adapter 117 has three output branches: a first output branch 121, a second output branch 123, and a third output branch 125. A first shut-off valve 127 is installed on the first output branch 121, a second shut-off valve 129 is installed on the second output branch 123, and a third shut-off valve 131 is installed on the third output branch 125. During puncture, the first output branch 121 is first connected to a first piston-type collection bottle. The first shut-off valve 127 is controlled to open the first output branch, while the second shut-off valves 129 and 131 are controlled to close the second and third output branches 123 and 125. The first piston-type collection bottle is then aspirated, creating a negative pressure environment inside the puncture and aspiration device, allowing the accumulated fluid in the patient's body to flow smoothly into the first piston-type collection bottle. As the amount of liquid in the collection bottle increases, the negative pressure environment previously formed inside the puncture and aspiration device will be disrupted, and the accumulated liquid may not be able to flow out smoothly. At this time, the negative pressure environment inside the puncture and aspiration device can be readjusted through the second output branch 123 and / or the third output branch 125.

[0029] Taking the readjustment of the negative pressure environment inside the puncture aspiration device via the second output branch 123 as an example: The second output branch 123 is connected to the second piston-type collection bottle. The second shut-off valve 129 is controlled to open the second output branch, while the third output branch 125 remains closed. The second piston-type collection bottle is then drawn back, creating a negative pressure environment inside the puncture aspiration device again, allowing the fluid accumulated in the patient's body to flow smoothly into the second piston-type collection bottle. Subsequently, depending on the actual needs of the aspiration, it can be decided whether to further adjust the negative pressure environment inside the puncture aspiration device via the third output branch 125.

[0030] In some embodiments, the adapter 117 includes a circular hollow structure, with the input end of the adapter 117 and a plurality of output branches arranged on the circumference of the circular hollow structure.

[0031] Furthermore, the sidewall of the outer tube 105 has a porous structure, which is located near the inlet of the outer tube 105. Since the inlet of the outer tube 105 is prone to adhesion to the patient's body tissue, preventing the patient's body fluid from smoothly entering the outer tube 105, the presence of the porous structure provides more possibilities for the body fluid to enter the outer tube 105, effectively preventing the adhesion of the patient's body tissue to the inlet of the outer tube from affecting the fluid aspiration process.

[0032] In some embodiments, the perforation structure is positioned 2mm to 7mm from the inlet of the outer sleeve 105. If the perforation structure is too close to the inlet of the outer sleeve 105, it is easily adhered to by the patient's body tissue along with the inlet, rendering it ineffective; if the perforation structure is too far from the inlet of the outer sleeve 105, excessive waste occurs at the front end of the outer sleeve 105, easily causing patient discomfort. In some embodiments, there is one perforation structure. In some embodiments, there are multiple perforation structures. In some embodiments, there are multiple perforation structures, evenly distributed on the sidewall of the outer sleeve 105 and arranged in a spiral pattern. Figure 2 and Figure 3 As shown, multiple perforated structures 201 are evenly distributed around the sidewall of the outer sleeve 105 and arranged in a spiral pattern. In some embodiments, the spirally arranged multiple perforated structures are distributed along the axial direction of the outer sleeve 105 for a length of 3 mm to 5 mm. This spiral distribution structure provides backup channels in both the axial and circumferential directions of the outer sleeve 105, thus minimizing the impact of patient tissue adhesion on the fluid aspiration process.

[0033] Furthermore, the puncture and aspiration device of this utility model embodiment also includes a fixing structure. For example... Figure 4 As shown, the fixing structure of this embodiment includes a central fixing area 401 and a peripheral fixing area surrounding the central fixing area 401. The peripheral fixing area includes a first half-area 403 and a second half-area 405, which surround and are connected to the central fixing area 401. The peripheral fixing area is disconnected at a first position 407 and a second position 409 to form the first half-area 403 and the second half-area 405, which are located on both sides of the central fixing area 401. The central fixing area 401 is used to adhere the catheter 115, and the peripheral fixing area is used to adhere to the patient's skin. This design, which disconnects the peripheral fixing area at the first position 407 and the second position 409, provides operational convenience for the central fixing area 401 to adhere to the catheter 115.

[0034] In some embodiments, the peripheral fixation area remains connected at the first position 407 and the second position 409. In this case, the conduit 115 needs to pass through the hole formed by the central fixation area 401 and the peripheral fixation area before being attached to the central fixation area 401.

[0035] After successful puncture, the catheter 115 is first attached to the central fixation area 401. Then, the first half area 403 and the second half area 405 are attached to the first position 407 and the second position 409 respectively to form a connection, so that the outer fixation area forms a closed surrounding structure with the central fixation area 401. Finally, the remaining part of the central fixation area 401, together with the first half area 403 and the second half area 405, is attached to the patient's skin. This structure is very stable and firmly binds the catheter 115, making it difficult to break free.

[0036] Furthermore, such as Figure 5 As shown, after the central fixation area 401 adheres to the catheter 115 for one cycle, the portion of the central fixation area 401 located on both sides of the catheter 115 is further adhered for a certain length L, forming a buffer band 501. The buffer band 501 can effectively prevent the outer cannula 105 inserted into the patient's body from being dislodged due to the shaking of the catheter 115 during operation. In some embodiments, the length L of the buffer band 501 is 5mm to 15mm. If the buffer band is too short, it will not provide a cushioning effect; if the buffer band is too long, the movement of the catheter will exceed the reasonable range, and it will not provide a fixing effect. In some embodiments, the remaining portion of the central fixation area 401 on both sides of the buffer band 501 is used to adhere to the patient's skin together with the peripheral fixation area. In some embodiments, the remaining portion of the central fixation area 401 on both sides of the buffer band 501 is used to adhere to the patient's skin together with the first half-area 403 and the second half-area 405.

[0037] This invention utilizes a fixing structure to secure the catheter. The fixing structure has a central fixing area and a peripheral fixing area. The peripheral fixing area surrounds and connects to the central fixing area. The catheter is adhered to the central fixing area, and the human body is adhered to the peripheral fixing area. This structure ensures the catheter is firmly attached to the appropriate part of the patient's body. The central fixing area adheres to the catheter and maintains a certain distance from the human body, allowing the catheter to move within a reasonable range, forming a buffer zone to prevent the catheter from shaking during operation and causing the inserted portion to dislodge from the body. An outer sheath is placed outside the needle core. During puncture, the needle core and the outer sheath are inserted into the human body together. The needle core is then removed, leaving only the outer cannula inside the body. Because the outer cannula is soft, it prevents injury to the patient during fluid aspiration. An adapter with multiple output branches is installed at the end of the catheter. Each output branch has a shut-off valve that controls the opening and closing of the output branch. Each output branch can be connected to a piston-type collection bottle. By operating the shut-off valve and the piston-type collection bottle, a suitable negative pressure environment is created inside the puncture aspiration device, ensuring a smooth aspiration process. An additional perforation is provided on the outer cannula near its inlet to prevent the inlet from adhering to the patient's body tissue and affecting the aspiration process.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more (two or more) executable instructions for implementing a particular logical function or process. Furthermore, the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functionality involved.

[0041] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus or device (such as a computer-based system, a processor-included system or other system that can fetch and execute instructions from, an instruction execution system, apparatus or device).

[0042] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. All or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware, the program being stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiments.

[0043] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. This storage medium can be a read-only memory, a disk, or an optical disk, etc.

[0044] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A puncture and aspiration device, characterized in that, The device includes a main body, a funnel structure, an outer cannula, a needle hub, a needle core, a catheter, and a fixation structure. The main body is hollow, and the funnel structure is disposed within the main body at its first end. The smaller inner diameter end of the funnel structure is connected to the outer cannula, which extends outward from the first end of the main body. The needle hub is disposed at the second end of the main body and is connected to the needle core, which extends outward from the main body through the funnel structure and the outer cannula. The main body has a third end, and one end of the catheter is connected to the third end of the main body. The fixation structure includes a central fixation area and a peripheral fixation area surrounding the central fixation area. The central fixation area is used to attach the catheter, and the peripheral fixation area is used to attach to the patient's skin.

2. The puncture and aspiration device as described in claim 1, characterized in that, The peripheral fixed area forms a closed enclosure structure around the central fixed area.

3. The puncture and aspiration device as described in claim 1, characterized in that, The peripheral fixing area is disconnected at a first position and a second position to form a first half-area and a second half-area, and the first half-area and the second half-area are connected through the central fixing area; the first position and the second position are located on both sides of the central fixing area.

4. The puncture and aspiration device as described in any one of claims 1 to 3, characterized in that, After the central fixation area is adhered to the catheter for one cycle, the portion of the central fixation area located on both sides of the catheter is further adhered for a length L to form a buffer zone; the remaining portion of the central fixation area on both sides of the buffer zone is used to adhere to the patient's skin together with the peripheral fixation area.

5. The puncture and aspiration device as described in claim 4, characterized in that, The length L of the buffer strip is 5mm to 15mm.

6. The puncture and aspiration device as described in any one of claims 1 to 3, characterized in that, The sidewall of the outer tube has a perforated structure.

7. The puncture and aspiration device as described in claim 6, characterized in that, The perforation structure is located 2mm to 7mm from the inlet of the outer sleeve.

8. The puncture and aspiration device as described in claim 6, characterized in that, The hole structure is one.

9. The puncture and aspiration device as described in claim 6, characterized in that, The hole structure is multiple.

10. The puncture and aspiration device as described in claim 9, characterized in that, The multiple perforated structures are evenly distributed on the sidewall of the outer tube and arranged in a spiral pattern.

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