Puncture and aspiration device

Abstract

The utility model discloses a puncture liquid extraction device, including main part, hopper structure, outer sleeve, needle seat and needle core, the main part is hollow structure, hopper structure sets up in the main part, is located the first end of main part, 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 lateral wall of outer sleeve has hole structure. The utility model can avoid in the liquid extraction process to stab the patient, ensures that the liquid extraction process can be steady, can effectively prevent the entrance of outer sleeve to adhere to the patient body tissue and influence the liquid extraction process, significantly reduces the pressure of both sides of doctor and patient in the liquid extraction process.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a puncture and aspiration device. 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 steel needles to extract accumulated fluid. The steel needles need to be inserted into the patient's body throughout the entire aspiration process, which can easily injure the patient. Furthermore, the steel needles can easily adhere to the patient's body tissues at the entry point, affecting the aspiration process. Therefore, a high degree of cooperation from the patient and the doctor's operating skills are required. 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 avoid puncturing the patient during the aspiration process, ensure that the aspiration process can be carried out smoothly, effectively prevent the inlet of the outer tube 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, and a needle core; the main body is a hollow structure, the funnel structure is disposed inside the main body at the first end of the main body, the end of the funnel structure with a smaller inner diameter 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 side wall of the outer tube has a perforated structure.

[0006] In some implementations, the perforation is located 2 mm to 7 mm from the inlet of the outer sleeve.

[0007] In some implementations, the hole structure is a single hole.

[0008] In some implementations, there are multiple hole structures.

[0009] In some embodiments, multiple hole structures are evenly distributed on the sidewall of the outer tube and arranged in a spiral pattern.

[0010] In some embodiments, the length of the multiple spirally arranged perforations distributed along the axial direction of the outer sleeve is 3 mm to 5 mm.

[0011] In some embodiments, the above-mentioned puncture and aspiration device further includes an isolation plug and a protective sleeve; the isolation plug is disposed inside the main body, between the needle seat and the funnel structure, and the needle core extends out from inside the main body through the isolation plug, the funnel structure and the outer sleeve; the protective sleeve is fitted over the first end of the main body through the outer sleeve and the needle core.

[0012] In some embodiments, the above-mentioned puncture and aspiration device further includes a conduit, an adapter, and a piston-type collection bottle; the main body has a third end, one end of the conduit is connected to the third end of the main body, and the other end is connected to the input end of the adapter; the adapter has multiple output branches, each output branch 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 branch.

[0013] In some implementations, the piston-type collection bottle has a syringe structure.

[0014] In some implementations, the adapter includes a circular hollow structure, with the input end and multiple output branches of the adapter arranged on the circumference of the circular hollow structure.

[0015] In summary, compared with the prior art, the above-described technical solution conceived by this utility model has the following beneficial effects: An outer sheath is provided outside the needle core. During puncture, the needle core and the outer sheath are inserted into the body together, and then the needle core is pulled out, leaving only the outer sheath inside the body. Because the outer sheath is soft, it can prevent injury to the patient during fluid aspiration. An adapter is provided at the end of the catheter, with 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 formed inside the puncture and aspiration device, ensuring a smooth aspiration process. An additional perforation structure is provided on the outer sheath near its inlet to prevent the inlet of the outer sheath from adhering to the patient's body tissue and affecting the 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 2 This 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 tube in an embodiment of the present invention along the axial direction of the outer tube. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] This invention features an outer sheath surrounding the needle core. During puncture, the needle core and outer sheath are inserted into the body together, and then the needle core is withdrawn, leaving only the outer sheath inside the body. Because the outer sheath is soft, it prevents injury to the patient during fluid aspiration. An adapter with multiple output branches is located at the end of the catheter. Each output branch is equipped with a shut-off valve, which 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 and aspiration device, ensuring a smooth aspiration process. Furthermore, an additional perforation structure is provided on the outer sheath near its inlet to prevent the inlet from adhering to the patient's body tissue and affecting the aspiration process.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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).

[0036] 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.

[0037] 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.

[0038] 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, It includes a main body, a funnel structure, an outer tube, a needle hub, and a needle core; the main body is a hollow structure, the funnel structure is disposed inside the main body and located 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 sidewall of the outer tube has a perforated structure.

2. The puncture and aspiration device as described in claim 1, characterized in that, The perforation structure is located 2mm to 7mm from the inlet of the outer sleeve.

3. The puncture and aspiration device as described in claim 1, characterized in that, The hole structure is one.

4. The puncture and aspiration device as described in claim 1, characterized in that, The hole structure is multiple.

5. The puncture and aspiration device as described in claim 4, characterized in that, The multiple perforated structures are evenly distributed on the sidewall of the outer tube and arranged in a spiral pattern.

6. The puncture and aspiration device as described in claim 5, characterized in that, The plurality of holes arranged in a spiral pattern are distributed along the axial direction of the outer sleeve for a length of 3 mm to 5 mm.

7. The puncture and aspiration device as described in any one of claims 1 to 6, characterized in that, It also includes an isolation plug and a protective sleeve; the isolation plug is disposed inside the body, between the needle hub and the funnel structure, and the needle core extends out from the body through the isolation plug, the funnel structure and the outer sleeve; The protective sleeve is fitted onto the first end of the main body via the outer sleeve and the needle core.

8. The puncture and aspiration device as described in any one of claims 1 to 6, characterized in that, It also includes a conduit, an adapter, and a piston-type collection bottle; the main body has a third end, one end of the conduit is connected to the third end of the main body, and the other end is connected to the input end of the adapter; the adapter has multiple output branches, each output branch 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 branch.

9. The puncture and aspiration device as described in claim 8, characterized in that, The piston-type liquid collection bottle has a syringe structure.

10. The puncture and aspiration device as described in claim 8, characterized in that, The adapter includes a circular hollow structure, and the input end and multiple output branches of the adapter are arranged on the circumference of the circular hollow structure.

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