Press type drainage needle instrument
By designing a press-type drainage needle including a reservoir cylinder, a lid, a piston assembly and a puncture assembly, the problem that existing abscess puncture needles require two-hand operation is solved, and abscess puncture and drainage with one-hand operation is achieved, improving the efficiency and safety of treatment.
Patent Information
- Application Number
- CN202421088824.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-05-17
AI Technical Summary
The existing abscess puncture needle requires both hands to operate, and the oropharyngeal space is limited, which is inconvenient for two people to operate simultaneously, making it difficult to complete puncture treatment with one-handed operation.
A press-type drainage needle is designed, including a reservoir cylinder, a cover body, a piston assembly and a puncture assembly. The pressing movement of the piston assembly generates negative pressure to achieve liquid absorption and can be operated by one hand.
Abscess puncture and drainage with one-handed operation are realized, which simplifies the operation process, reduces dependence on assistants, and improves the efficiency and safety of treatment.
Smart Images
Figure CN222871033U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical devices, and more specifically, to a press-type drainage needle. Background Art
[0002] In the medical field, liquid specimens in tissues have important clinical and scientific research value. For example, for the treatment of upper respiratory tract infections, peritonsillar abscesses often occur in patients with upper respiratory tract infections, and common symptoms include fever, severe sore throat, and fear of swallowing. The reason is that bacterial infection causes suppuration of tonsils and surrounding tissues, which is prone to complications such as acute nephritis and acute myocarditis. In addition to conventional antibacterial and anti-inflammatory treatments in clinical practice, puncture and fluid extraction after the formation of tonsillar abscesses can not only alleviate symptoms, but also make antibacterial treatment more effective. However, the current abscess puncture needle uses a thick needle syringe, which requires two-handed operation in clinical applications. The tonsils are located in the tonsillar fossa of the oropharynx. During treatment, one hand needs to hold the tongue depressor to fully expose the oropharyngeal cavity to ensure a clear field of vision and avoid damage. Therefore, the puncture treatment of peritonsillar abscesses needs to be completed with one hand, otherwise it cannot be completed by one person alone, and an assistant is required to assist, and the space in the oropharynx is limited, which is not convenient for two people to operate at the same time. Utility Model Content
[0003] The utility model aims to provide a push-type drainage needle which is easy to operate and can be operated with one hand.
[0004] According to one aspect of the utility model, there is provided a push-type drainage needle, comprising:
[0005] A liquid storage cylinder, comprising an outer cylinder and an inner cylinder suspended in the outer cylinder, the inner cylinder having a first cavity, the outer cylinder and the top opening of the inner cylinder being open, the inner cylinder being provided with an exhaust hole, the exhaust hole passing through the outer cylinder so that the first cavity is connected with the outside, the outer cylinder being provided with a liquid inlet, the liquid inlet being connected with the top opening of the inner cylinder through a pipeline;
[0006] A cover body, which covers the top opening of the outer cylinder, and the cover body is provided with a guide hole;
[0007] A piston assembly, comprising a piston slidably matched with the inner cylinder, and a guide rod connected to the piston, wherein the end of the guide rod passes through the guide hole of the cover body and is located outside the outer cylinder;
[0008] The puncture assembly is used for puncturing the tissue and is communicated with the liquid inlet of the outer cylinder.
[0009] Optionally, a partition is provided between the outer cylinder and the inner cylinder, the inner cylinder is suspended in the outer cylinder through the partition, and the partition is provided with a plurality of first through holes.
[0010] Optionally, a second cavity is formed between the outer surface of the inner cylinder and the inner surface of the outer cylinder, and the liquid inlet of the outer cylinder is connected to the second cavity.
[0011] Optionally, a plurality of second through holes are formed on the side wall close to the top opening of the inner cylinder, and the first cavity of the inner cylinder is connected with the second cavity through the second through holes.
[0012] Optionally, the side wall height of the outer cylinder is greater than the side wall height of the inner cylinder, a third cavity is formed between the top opening of the outer cylinder and the top opening of the inner cylinder, and the first cavity of the inner cylinder is connected to the second cavity through the third cavity.
[0013] Optionally, the number of the partitions is set to two, and the two partitions are respectively arranged close to the top opening and the bottom of the inner cylinder.
[0014] Optionally, the exhaust hole is provided in plurality, and the plurality of exhaust holes are arranged around the liquid inlet.
[0015] Optionally, a pressing handle is provided at the end of the guide rod of the piston assembly.
[0016] Optionally, it also includes a cover that is detachably covered on the puncture assembly.
[0017] Optionally, a groove for installing a sealing strip is formed on the inner circumferential surface of the guide hole of the cover body.
[0018] The beneficial effects of the utility model are as follows:
[0019] The push-type drainage needle of the utility model pushes the piston to move by pressing, so that negative pressure is generated in the inner cylinder, so that liquid can be sucked, which is convenient for operators to use the needle with one hand. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.
[0021] Figure 1 The schematic diagram of the structure of the utility model is shown.
[0022] Figure 2 The schematic diagram of the exploded structure of the utility model is shown.
[0023] Figure 3 A partial structural sectional view of the utility model is shown.
[0024] Figure 4 A partial structural cross-sectional view of an embodiment of the utility model is shown.
[0025] Figure 5 A partial structural cross-sectional view of another embodiment of the utility model is shown.
[0026] Figure 6 A partial structural schematic diagram of another embodiment of the utility model is shown.
[0027] Figure 7 A cross-sectional view showing an initial state of the present invention.
[0028] Figure 8 A cross-sectional view of the utility model after the absorption is completed is shown. DETAILED DESCRIPTION
[0029] In order to more clearly illustrate the utility model, the utility model is further described below in conjunction with preferred embodiments and drawings. Similar components in the drawings are represented by the same reference numerals. Those skilled in the art should understand that the content described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the utility model.
[0030] like Figure 1 and Figure 3 As shown, the push-type drainage needle provided in this embodiment includes a fluid reservoir 10, a cover body 20, a piston assembly 30 and a puncture assembly 40, wherein the piston assembly 30 can move in the fluid reservoir 10, so that the operator can push the piston assembly to move by pressing, so that negative pressure is generated in the fluid reservoir 10, thereby sucking the liquid specimen in the tissue body through the puncture assembly 40, and storing the sucked liquid in the fluid reservoir 10.
[0031] The liquid storage cylinder 10 includes an outer cylinder 11 and an inner cylinder 12, wherein the inner cylinder 12 is suspended in the outer cylinder 11, and the inner cylinder 12 has a first cavity 121. The top openings of the inner cylinder 12 and the outer cylinder 11 are open, and a vent hole 122 is provided at the bottom of the inner cylinder 12, and the vent hole 122 passes through the bottom surface of the outer cylinder 11 and communicates with the outside, so that the first cavity 121 communicates with the outside through the vent hole 122. The pipe wall forming the vent hole 122 is connected to the bottom side wall of the inner cylinder 12 and the outer cylinder 11, respectively, so that the inner cylinder 12 is suspended inside the outer cylinder 11. A liquid inlet 111 is provided at the bottom of the outer cylinder 11, and the liquid inlet 111 can be communicated with the top opening of the inner cylinder 12 through a pipeline.
[0032] The cover body 20 covers the top opening of the outer cylinder 11 to close it, and a guide hole 21 is provided on the cover body 20. The piston assembly 30 includes a piston 31 and a guide rod 32. The piston 31 is slidably matched with the inner cylinder 12, that is, the piston 31 can slide along the inner surface of the inner cylinder 12. One end of the guide rod 32 is connected to the piston 31, and the other end passes through the guide hole 21 and is located on the outside of the outer cylinder 11. The puncture assembly 40 is used to puncture the tissue body and is connected to the liquid inlet 111. The puncture assembly 40 may include a main body 41, and a needle 42 connected to the main body 41. The main body 41 is connected to the needle 42, so that the liquid can flow through the puncture assembly 40 to reach the top opening of the inner cylinder 12, and finally the top opening enters the inner cylinder 12.
[0033] When using the push-type drainage needle disclosed herein, the operator can press and push the piston assembly 30 with one hand to move the piston 31 downward from the top of the inner cylinder 12, so that the air below the piston 31 in the inner cylinder 12 is discharged to the outside through the exhaust hole 122, and a negative pressure state is formed in the cavity above the piston 31 and between the cover body 20, so that the cavity can absorb liquid through the puncture assembly 40.
[0034] For example, when puncturing and aspirating tonsil abscess, the medical staff holds the tongue depressor with one hand to hold down the patient's tongue, and inserts the disclosed push-type drainage needle into the abscess with the other hand, and then pushes the piston assembly 30 to move to complete the aspiration operation, so that only one person is needed to complete the treatment.
[0035] In one example, a partition 13 is provided between the outer cylinder 11 and the inner cylinder 12, that is, the partition 13 is connected to the inner surface of the outer cylinder 11 and the outer surface of the inner cylinder 12 respectively, the inner cylinder 12 is suspended in the outer cylinder 11 through the partition 13, and a plurality of first through holes 131 are provided on the partition 13. A second cavity 14 is formed between the inner surface of the outer cylinder 11 and the outer surface of the inner cylinder 12, and the second cavity 14 is connected to the liquid inlet 111, so that the second cavity 14 can realize the function of a pipeline, and the tissue fluid enters the liquid inlet 111 from the puncture assembly 40, then flows through the second cavity 14, and finally enters the negative pressure cavity in the first cavity 121.
[0036] In one example, a plurality of second through holes 123 are provided on the side wall near the top opening of the inner cylinder 12, and the second cavity 14 is connected to the first cavity 121 through the second through holes 123. In this structure, the side walls of the inner cylinder 12 and the outer cylinder 11 are of equal height, and the cover 20 can simultaneously close the top openings of the inner cylinder 12 and the outer cylinder 11.
[0037] In one example, if Figure 4As shown, the side wall height of the outer cylinder 11 is greater than the side wall height of the inner cylinder 12, and a third cavity 15 is formed between the top opening of the outer cylinder 11 and the top opening of the inner cylinder 12, and the first cavity 121 is connected with the second cavity 14 through the third cavity 15. When the piston 31 moves downward from the top opening of the inner cylinder 12, the air in the cavity below the piston 31 is discharged to the outside through the exhaust hole 122, and a negative pressure state is formed in the cavity above the piston 31, and the tissue fluid is sucked in by the liquid inlet 111 and flows into the inner cylinder 12 along the direction indicated by the arrow in the figure.
[0038] In one example, if Figure 5 and Figure 6 As shown, the number of the partitions 13 is set to two, and the two partitions 13 are respectively arranged close to the two ends of the inner cylinder 12.
[0039] In one example, a plurality of exhaust holes 122 are provided, which are respectively arranged around the liquid inlet 111 .
[0040] In one example, a pressing handle 321 is provided at the end of the guide rod 32 of the piston assembly 30. The pressing handle 321 is disc-shaped, which is convenient for operators to press with their fingers. A sealing strip can also be provided on the outer circumference of the piston 31 to improve the sealing performance between the piston 31 and the inner cylinder 12.
[0041] In one example, a sealing strip is provided on the inner circumference of the guide hole 21 of the cover body 20. For example, a groove may be provided along the inner circumference of the guide hole 21, and the sealing strip is embedded in the groove to achieve sliding sealing cooperation between the cover body and the piston assembly 30. The sealing strip may be made of medical rubber such as silicone.
[0042] In one example, the device further includes a cover 50 that detachably covers the puncture assembly.
[0043] like Figure 7 The initial state of the push-type drainage needle of the present disclosure is shown, at which the piston 31 is located at the top opening of the inner cylinder 12 .
[0044] like Figure 8 The push-type drainage needle of the present disclosure is shown in the suction end state, at which time the piston 31 is located at the bottom of the inner cylinder 12 .
[0045] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper" and "lower" and the like is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.
[0046] It should also be noted that, in the description of the present disclosure, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprise one..." do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.
[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.
Claims
1. A push-type drainage needle, characterized in that: include: A liquid storage cylinder, comprising an outer cylinder and an inner cylinder suspended in the outer cylinder, the inner cylinder having a first cavity, the outer cylinder and the top opening of the inner cylinder being open, the inner cylinder being provided with an exhaust hole, the exhaust hole passing through the outer cylinder so that the first cavity is connected with the outside, the outer cylinder being provided with a liquid inlet, the liquid inlet being connected with the top opening of the inner cylinder through a pipeline; A cover body, which covers the top opening of the outer cylinder, and the cover body is provided with a guide hole; A piston assembly, comprising a piston slidably matched with the inner cylinder, and a guide rod connected to the piston, wherein the end of the guide rod passes through the guide hole of the cover body and is located outside the outer cylinder; The puncture assembly is used for puncturing the tissue and is communicated with the liquid inlet of the outer cylinder.
2. The push-type drainage needle according to claim 1, characterized in that: A partition is provided between the outer cylinder and the inner cylinder, the inner cylinder is suspended in the outer cylinder through the partition, and the partition is provided with a plurality of first through holes.
3. The push-type drainage needle according to claim 2, characterized in that: A second cavity is formed between the outer surface of the inner cylinder and the inner surface of the outer cylinder, and the liquid inlet of the outer cylinder is communicated with the second cavity.
4. The push-type drainage needle according to claim 3, characterized in that: A plurality of second through holes are provided on the side wall close to the top opening of the inner cylinder, and the first cavity of the inner cylinder is communicated with the second cavity through the second through holes.
5. The push-type drainage needle according to claim 3, characterized in that: The side wall height of the outer cylinder is greater than that of the inner cylinder, a third cavity is formed between the top opening of the outer cylinder and the top opening of the inner cylinder, and the first cavity of the inner cylinder is connected to the second cavity through the third cavity.
6. The push-type drainage needle according to claim 2, characterized in that: The number of the partitions is set to two, and the two partitions are respectively arranged close to the top opening and the bottom of the inner cylinder.
7. The push-type drainage needle according to claim 1, characterized in that: The exhaust holes are arranged in plurality, and the plurality of exhaust holes are arranged around the liquid inlet.
8. The push-type drainage needle according to claim 1, characterized in that: A pressing handle is provided at the end of the guide rod of the piston assembly.
9. The push-type drainage needle according to claim 1, characterized in that: Also included is a cover that is detachably covered on the puncture assembly.
10. The push-type drainage needle according to claim 1, characterized in that: The inner circumferential surface of the guide hole of the cover body is provided with a groove for installing a sealing strip.