A chest needle

Abstract

The utility model relates to a chest needle, including vacuum cylinder and hollow needle, both sides surface tooth groove of needle, the movable sleeve of positioning piece and the lock catch assembly that will lock tightly fixed on needle of positioning piece are established on needle, this chest needle structure design is ingenious, convenient operation, when using, the operator passes through the pressing part of two lock catch spare and drives the positioning piece to remove to adjust the depth of needle puncture, when the positioning piece removes in place, the operator can remove the applied force to two lock catch spare, at this moment, the elastic part resets automatically and makes the buckle part of lock catch spare and the current corresponding tooth groove cooperation clamping, thereby can the position of needle be adjusted quickly, and do not need to carry out the continuous rotation adjustment like the screw thread adjustment, saves the operation time, and the lock catch mode of the utility model compares with the screw thread structure, the design of tooth groove and buckle part can also reduce the wear and tear problem after long -term use, and the service life is high.

Description

Technical Field

[0001] This utility model relates to the field of surgical tools, and more specifically, to a thoracentesis needle. Background Technology

[0002] In cardiothoracic surgery, a thoracentesis needle is a very common and important tool, often used for closed chest drainage to remove accumulated air or blood from the pleural cavity, restore negative pressure, and help lung re-expansion. Patent number CN202121091164.1 discloses a medical thoracentesis needle, including a thoracentesis needle, an adjusting sleeve, a threaded rod, a handle, a connector, and a limiting ring. One end of the thoracentesis needle is connected to a threaded rod, and an adjusting sleeve is installed on the outer side of one end of the threaded rod. During medical thoracentesis, the surgeon can adjust the puncture depth of the other end of the thoracentesis needle by rotating the adjusting sleeve. The limiting ring allows for better control of the puncture depth. Although this thoracentesis needle can control the puncture depth, each adjustment requires precise rotation of the needle, making the operation relatively complex. Furthermore, the threaded structure may wear down after repeated use, leading to decreased adjustment accuracy and even loosening, affecting the stability of the puncture. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a thoracentesis needle to address the above-mentioned deficiencies of the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a thoracentesis needle, including a vacuum cylinder, a piston for controlling the air pressure inside the vacuum cylinder, and a hollow needle fixedly connected to the vacuum cylinder and communicating with its internal vacuum cavity, wherein the two sides of the needle near the end of the vacuum cylinder are provided with toothed grooves along its length; a positioning component and a locking assembly for locking the positioning component on the needle are movably sleeved on the needle; the positioning component includes a positioning plate and a base column for driving the positioning plate to move on the needle; the base column and the positioning plate Each component is provided with a channel through which the needle passes; the base column has mounting grooves on both sides of the channel, corresponding to the two toothed grooves and communicating with the channel; the locking assembly includes two locking members rotatably disposed in the two mounting grooves; each side of the base column has a first through hole communicating with the mounting groove; one end of the locking member has a pressing part, and the other end has a snap-fit ​​part that engages with any of the toothed grooves; at least a portion of the pressing part protrudes outside the first through hole; the mounting groove also has an elastic member that provides elastic force to the pressing part;

[0005] The thoracentesis needle of this utility model has a branch tube extending outward from the side wall of the lower end of the vacuum cylinder; one end of the branch tube is connected to the vacuum chamber, and the other end is fixedly connected to an exhaust pipe; the branch tube is also provided with a switch valve for cutting off or connecting the exhaust pipe.

[0006] The thoracentesis needle of this utility model has an air filter at the outlet end of the exhaust pipe.

[0007] The thoracentesis needle of this utility model has at least one second through hole on the outer wall of the insertion end of the needle, which communicates with the cavity inside the needle.

[0008] The thoracotomy needle of this utility model has an anti-slip pad on the lower surface of the positioning plate.

[0009] In the thoracentesis needle of this invention, the area of ​​the positioning plate is larger than the cross-sectional area of ​​the vacuum cylinder;

[0010] The thoracotomy needle of this utility model has a plurality of outwardly protruding limiting rings at the upper end of the needle along its length direction; the side walls of two adjacent limiting rings and the outer side wall of the needle form a toothed groove for the buckling part to be inserted.

[0011] The beneficial effects of this utility model are as follows: the thoracentesis needle structure is ingeniously designed and easy to operate. The operator can operate the locking assembly and positioning component with one hand, resulting in high work efficiency. During use, the operator presses the pressing part of the two locking components, compressing the elastic element and separating the locking part from the slot. This then drives the positioning component to move, thereby adjusting the needle puncture depth. When the positioning component is in place, the operator can release the force applied to the two locking components. At this time, the elastic element automatically resets and the locking part of the locking component engages with the corresponding tooth groove, allowing for quick adjustment of the needle position without the need for continuous rotation adjustment like threaded adjustment, saving operation time. Furthermore, compared with the threaded structure, the design of the tooth groove and locking part of this utility model can reduce wear after long-term use, resulting in a longer service life. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of a thoracentesis needle according to a preferred embodiment of the present invention;

[0014] Figure 2 yes Figure 1 Enlarged view of point A in the middle. Detailed Implementation

[0015] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0016] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0017] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0018] Furthermore, the terms indicating orientation, such as "up, down, front, back, left, right, upper end, lower end, longitudinal," etc., are all based on the posture and position of the device or equipment described in this solution during normal use.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0020] A preferred embodiment of the present invention provides a thoracentesis needle, such as... Figure 1-2As shown, a thoracentesis needle includes a vacuum cylinder 11, a piston 12 for controlling the air pressure inside the vacuum cylinder 11, and a hollow needle 13 fixedly connected to the vacuum cylinder 11 and communicating with its internal vacuum chamber. The needle 13 has toothed grooves 131 on both sides of its length near the end of the vacuum cylinder 11. A positioning element 14 and a locking assembly 15 for locking the positioning element 14 onto the needle 13 are movably mounted on the needle 13. The positioning element 14 includes a positioning plate 141 and a base column 142 for moving the positioning plate 141 on the needle 13. Both the base column 142 and the positioning plate 141 have channels 143 through which the needle 13 passes. The base column 142 has mounting grooves 144 on both sides of the channels 143, corresponding to the two toothed grooves 131 and communicating with the channels 143. The locking assembly 15 includes two rotatable mounting grooves. A locking element 151 is placed in two mounting slots 144; both sides of the base post 142 are provided with first through holes 145 communicating with the mounting slots 144; one end of the locking element 151 is provided with a pressing part 152, and the other end is provided with a snap-fit ​​part 153 that engages with any toothed groove 131; in this embodiment, the locking element 151 has a Z-shaped structure; the pressing part and the snap-fit ​​part protrude in opposite directions; at least a portion of the pressing part 152 protrudes outside the first through hole 145; the mounting slot 144 is also provided with an elastic element 154 that provides elastic force to the pressing part 152; in this embodiment, the elastic element 154 is a spring in the prior art; one end of the spring abuts and is fixed to the pressing part, and the other end abuts and is fixed to the inner sidewall of the mounting slot 144; when the elastic element is in its natural state, the pressing part protrudes outside the first through hole, and the snap-fit ​​part engages with the corresponding snap-fit ​​groove.

[0021] This thoracotomy needle features a clever design and convenient operation. The operator can move the locking assembly and positioning component with one hand, resulting in high work efficiency. During use, the operator presses the pressing part of the two locking components, compressing the elastic element and separating the locking part from the slot. This moves the positioning component, adjusting the needle puncture depth. When the positioning component is in place, the operator can release the force applied to the two locking components. At this point, the elastic element automatically resets, and the locking part of the locking component engages with the corresponding toothed groove, allowing for quick adjustment of the needle position without the need for continuous rotation like with threaded adjustments, saving operation time. Furthermore, compared to threaded structures, the design of the toothed groove and locking part reduces wear after long-term use, extending the service life.

[0022] In one embodiment, a branch pipe 16 extends outward from the lower side wall of the vacuum cylinder 11; one end of the branch pipe 16 is connected to the vacuum chamber, and the other end is fixedly connected to an exhaust pipe 17; the branch pipe 16 is also provided with a switch valve 18 for cutting off or connecting the exhaust pipe 17. In this embodiment, the switch valve 18 is a common switch structure in the prior art. During the puncture process, if the negative pressure in the thoracic cavity is too high, the operator can quickly cut off the exhaust pipe through the switch valve, thereby stopping aspiration and preventing pneumothorax; and through the switch valve, the operator can quickly adjust the aspiration state without interrupting the surgical procedure, improving the flexibility and convenience of the operation and helping to maintain the stability of the intrathoracic pressure.

[0023] In this embodiment, an air filter 19 is provided at the outlet end of the exhaust pipe 17. It is worth noting that the air filter 19 is a filtration structure in the prior art. The air filter can effectively prevent dust, bacteria and other particles in the outside air from entering the pleural cavity, reducing the risk of contamination to the patient during surgery. In addition, filtering the air can protect medical staff from harmful gases that may be released through the exhaust pipe, especially when dealing with pleural effusions that may contain infectious pathogens.

[0024] Furthermore, the outer wall of the insertion end of the needle 13 is provided with at least one second through hole 132 that communicates with the cavity inside the needle 13. During puncture, tissue fragments or blood may block the needle, and the second through hole can help these substances flow out and prevent the needle from becoming blocked; during closed chest drainage, the second through hole can also assist in drainage to ensure that effusion or gas can flow out smoothly.

[0025] Optionally, the lower surface of the positioning plate 141 is provided with an anti-slip pad (not shown in the figure); when the positioning member moves into place, the needle is inserted into the patient's body, and the positioning plate can prevent the needle from continuing to penetrate downward. At this time, the positioning plate is in contact with the patient's skin surface. The anti-slip pad can not only protect the patient from being punctured, but also prevent the positioning plate and the needle from moving.

[0026] Furthermore, the area of ​​the positioning plate 141 is larger than the cross-sectional area of ​​the vacuum cylinder 11, ensuring a stable connection.

[0027] Furthermore, the upper end of the needle 13 is provided with a plurality of outwardly protruding limiting rings 133 along its length direction; the side walls of two adjacent limiting rings 133 and the outer side wall of the needle 13 enclose each other to form a toothed groove 131 for the buckling part 153 to be inserted.

[0028] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A thoracentesis needle, comprising a vacuum cylinder, a piston for controlling the air pressure inside the vacuum cylinder, and a hollow needle fixedly connected to and communicating with the vacuum cylinder's internal vacuum chamber, characterized in that, The needle tip has toothed grooves on both sides of its length near the end of the vacuum cylinder; a positioning element and a locking assembly for locking the positioning element onto the needle tip are movably fitted on the needle tip; the positioning element includes a positioning plate and a base column that moves the positioning plate on the needle tip; both the base column and the positioning plate have channels through which the needle tip passes; the base column has mounting grooves on both sides of the channels corresponding to the two toothed grooves and communicating with the channels; the locking assembly includes two locking elements that are rotatably disposed in the two mounting grooves; both sides of the base column have first through holes communicating with the mounting grooves; one end of the locking element has a pressing part, and the other end has a snap-fit ​​part that engages with any of the toothed grooves; at least a portion of the pressing part protrudes outside the first through hole; the mounting groove also has an elastic element that provides elastic force to the pressing part.

2. The thoracentesis needle according to claim 1, characterized in that, The lower side wall of the vacuum cylinder extends outward and is provided with a branch pipe; one end of the branch pipe is connected to the vacuum chamber, and the other end is fixedly connected to an exhaust pipe; the branch pipe is also provided with a switch valve for cutting off or connecting the exhaust pipe.

3. The thoracentesis needle according to claim 2, characterized in that, An air filter is provided at the outlet end of the exhaust pipe.

4. The thoracentesis needle according to any one of claims 1-3, characterized in that, The outer wall of the insertion end of the needle is provided with at least one second through hole that communicates with the cavity inside the needle.

5. The thoracentesis needle according to claim 4, characterized in that, The lower surface of the positioning plate is provided with an anti-slip pad.

6. The thoracentesis needle according to claim 5, characterized in that, The area of ​​the positioning plate is larger than the cross-sectional area of ​​the vacuum cylinder.

7. The thoracentesis needle according to any one of claims 1-3 and 5-6, characterized in that, The upper end of the needle is provided with a plurality of outwardly protruding limiting rings along its length; the side walls of two adjacent limiting rings and the outer side wall of the needle form a toothed groove for the buckling part to be inserted.

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