A puncture needle protection mechanism and a radiofrequency puncture cannula assembly device

Abstract

A puncture needle protection mechanism and a radiofrequency puncture cannula assembly are disclosed. The puncture needle protection mechanism includes: a puncture needle connecting mechanism disposed on a puncture needle assembly; a protective end cover fitted onto the puncture needle and slidably along the length of the puncture needle assembly, the protective end cover having an opening through which the puncture needle body of the puncture needle assembly passes; the protective end cover having a puncture needle protection position covering the puncture needle body and a puncture needle use position allowing the puncture needle body to extend out of the opening. The technical problem to be solved is to overcome the issue in the prior art where, when the puncture needle protective cover is not used for puncture needle protection, it is perpendicular to the puncture needle, resulting in the protective cover occupying a large space and thus affecting the surgeon's operation.

Description

Technical Field

[0001] This invention relates to the field of medical puncture device technology, specifically to a puncture needle protection mechanism and a radiofrequency puncture cannula assembly, particularly a plasma radiofrequency ablation puncture cannula assembly. Background Technology

[0002] With societal development, low-temperature plasma radiofrequency ablation is commonly used for minimally invasive treatment of cervical and lumbar disc herniation. This technique maximizes the protection of the annulus fibrosus wall while effectively removing the nucleus pulposus. A radiofrequency puncture needle is essential during the procedure. However, when not in use, the tip of the radiofrequency puncture needle must be protected to prevent damage from contact with external objects and to avoid injury to staff.

[0003] In the prior art, Chinese patent document CN108338825A discloses an integrated safety lumbar puncture device, which includes a puncture unit, a cerebrospinal fluid circulation unit, and a puncture needle protective sheath. The tail end of the puncture needle protective sheath is connected to the puncture unit via a rotating mechanism. The puncture needle protective sheath rotates vertically to protect the puncture needle. However, when the puncture needle protective sheath is away from the puncture needle, it needs to rotate to a position perpendicular to the puncture needle, which can easily cause positional interference between the puncture needle and other surgical components, affecting the surgical procedure. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art where the puncture needle protective sleeve is set perpendicular to the puncture needle when not protecting the puncture needle, resulting in the puncture needle protective sleeve occupying a large space and thus affecting the doctor's surgical operation. The present invention thus provides a puncture needle protection mechanism, comprising:

[0005] A puncture needle connection mechanism is provided on the puncture needle assembly;

[0006] A protective end cover is fitted onto the puncture needle and is driven to slide along the length of the puncture needle assembly. The protective end cover has an opening through which the puncture needle body of the puncture needle assembly passes. The protective end cover has a puncture needle protection position that covers the puncture needle body and a puncture needle use position that allows the puncture needle body to extend out of the opening.

[0007] Optionally, the inner wall of the opening is fitted and connected to the outer peripheral wall of the puncture needle body.

[0008] Optional, the puncture needle protection mechanism also includes:

[0009] A limiting mechanism is disposed between the puncture needle connecting mechanism and the protective end cover, having a blocking position that connects the puncture needle connecting mechanism and the protective end cover to prevent relative movement between them, and a separating position that separates the puncture needle connecting mechanism and the protective end cover.

[0010] Optionally, the limiting mechanism includes:

[0011] A limiting groove is provided on one of the puncture needle connecting mechanism and the protective end cover, and a limiting protrusion is slidably provided on the other of the puncture needle connecting mechanism and the protective end cover;

[0012] The limiting protrusion is driven to extend or retract toward or away from the limiting groove.

[0013] Optionally, there are at least two limiting grooves, which are arranged along the length of the puncture needle assembly.

[0014] Optionally, the limiting mechanism further includes a driving component for driving the limiting protrusion to extend toward the limiting groove.

[0015] Optionally, the puncture needle connecting mechanism has a receiving cavity for accommodating the driving component; the driving component includes: a linkage member connected to the limiting protrusion, and an elastic member for driving the linkage member to move toward the protective end cover; the receiving cavity is respectively provided with a first opening for the limiting protrusion to pass through, and a second opening for the linkage member to extend out.

[0016] Optionally, the linkage is a pull rod extending along the length of the puncture needle assembly, and the second opening is located at the end of the receiving cavity away from the protective end cover; the elastic element is a spring with one end connected to the pull rod and the other end connected to the inner wall of the receiving cavity.

[0017] Optionally, a plurality of the limiting grooves are evenly arranged along the length of the protective end cover.

[0018] A radiofrequency puncture cannula assembly, comprising:

[0019] Puncture needle protection mechanism, and

[0020] A puncture needle assembly, comprising: a radiofrequency puncture needle, and a puncture cannula disposed outside the radiofrequency puncture needle.

[0021] The technical solution of this invention has the following advantages:

[0022] 1. The puncture needle protection mechanism provided by the present invention includes: a puncture needle connecting mechanism disposed on a puncture needle assembly; a protective end cover sleeved on the puncture needle and driven to slide along the length direction of the puncture needle assembly, the protective end cover having an opening through which the puncture needle body of the puncture needle assembly passes; the protective end cover having a puncture needle protection position covering the puncture needle body and a puncture needle use position allowing the puncture needle body to extend out of the opening.

[0023] By providing an opening in the protective end cap and allowing it to slide slidably along the length of the puncture needle assembly, the protective end cap effectively protects the puncture needle body by covering it. Furthermore, the puncture needle body extends out of the opening, ensuring the protective end cap does not interfere with the normal use of the puncture needle. Compared to existing puncture needle protective sleeves, which require a perpendicular orientation to the puncture needle when not in use, the aforementioned protective end cap occupies less space in both the puncture needle protection and usage positions, thus ensuring the puncture needle protection mechanism does not interfere with the surgeon's operation.

[0024] 2. In the puncture needle protection mechanism provided by the present invention, the inner wall of the opening is fitted and connected to the outer peripheral wall of the puncture needle body. This allows the opening to limit the position of the puncture needle body, preventing positional deviation.

[0025] 3. The puncture needle protection mechanism provided by the present invention further includes: a limiting mechanism disposed between the puncture needle connecting mechanism and the protective end cover, having a blocking position for connecting the puncture needle connecting mechanism and the protective end cover to prevent relative movement between them, and a separating position for separating the puncture needle connecting mechanism and the protective end cover.

[0026] The aforementioned limiting mechanism can effectively fix the relative positions of the protective end cap and the puncture needle assembly, thereby ensuring that the protective end cap will not affect the normal operation of medical workers when they operate the radiofrequency puncture cannula assembly.

[0027] 4. The puncture needle protection mechanism provided by the present invention includes a limiting mechanism comprising: a limiting groove disposed on one of the puncture needle connecting mechanism and the protective end cover, and a limiting protrusion slidably disposed on the other of the puncture needle connecting mechanism and the protective end cover; the limiting protrusion is driven to extend or retract toward or away from the limiting groove. Furthermore, there are at least two limiting grooves, arranged along the length direction of the puncture needle assembly.

[0028] The aforementioned mutually adaptable limiting grooves and limiting protrusions can securely and reliably fix the protective end cover in different positions. Furthermore, the interlocking limiting grooves and limiting protrusions also offer the advantages of simple and reliable structure. Since the inner wall of the opening is closely connected to the outer peripheral wall of the puncture needle body, the protective end cover can be adjusted according to different usage needs to limit the position of the puncture needle body.

[0029] 5. The puncture needle protection mechanism provided by the present invention further includes a limiting mechanism for driving the limiting protrusion to extend toward the limiting groove. The puncture needle connecting mechanism has a receiving cavity for accommodating the driving component; the driving component includes a linkage member connected to the limiting protrusion, and an elastic member for driving the linkage member to move toward the protective end cover; the receiving cavity is respectively provided with a first opening for the limiting protrusion to pass through, and a second opening for the linkage member to extend out.

[0030] By providing a receiving cavity within the aforementioned puncture needle connection mechanism, and then using an elastic element to push the limiting protrusion within the receiving cavity toward the limiting groove, the limiting protrusion and the limiting groove can automatically engage to achieve the limiting function. Furthermore, the extension of the aforementioned linkage element out of the receiving cavity also facilitates medical workers in driving the limiting protrusion and the limiting groove to separate, thus simply and effectively unlocking the puncture needle protection mechanism. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the radiofrequency puncture cannula assembly device provided by the present invention, showing the puncture needle body extending out of the protective end cover.

[0033] Figure 2 A schematic diagram of the radiofrequency puncture cannula assembly device provided by the present invention, wherein the puncture needle body is located inside the protective end cover.

[0034] Figure 3 A schematic diagram of the structure of the protective end cover provided by the present invention;

[0035] Figure 4 A schematic diagram of the structure of the driving component disposed within the accommodating cavity provided by the present invention;

[0036] Figure 5 A schematic diagram of the accommodating cavity of the puncture needle connection mechanism provided by the present invention;

[0037] Figure 6 This is a schematic diagram of the accommodating cavity of the puncture needle connection mechanism provided by the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1-Puncture needle connection mechanism; 2-Puncture needle assembly; 3-Puncture needle body; 4-Puncture cannula; 5-Protective end cover; 6-Opening; 7-Limiting groove; 8-Limiting protrusion; 9-Driving component; 10-Accommodating cavity; 11-Linking component; 12-Elastic component; 13-First opening; 14-Second opening; 15-Actuating component. Detailed Implementation

[0040] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] Example 1

[0045] A puncture needle protection mechanism, such as Figure 1 and Figure 2 As shown, it includes:

[0046] The puncture needle connecting mechanism 1 is an annular structure sleeved on the puncture needle assembly 2, and the puncture needle connecting mechanism 1 has a receiving cavity 10 for accommodating the driving component 9;

[0047] Protective end cap 5, such as Figure 3 As shown, the protective end cover 5 is fitted onto the puncture needle and slides along the length of the puncture needle assembly 2 under drive. The protective end cover 5 is provided with an opening 6 for the puncture needle body 3 of the puncture needle assembly 2 to pass through. The protective end cover 5 has a puncture needle protection position that covers the puncture needle body 3 and a puncture needle use position that allows the puncture needle body 3 to extend out of the opening 6. The protective end cover 5 is fitted onto the puncture needle assembly 2 in both the puncture needle protection position and the puncture needle use position, and it occupies a small space, so that the puncture needle protection mechanism will not affect the doctor's surgical operation. In this embodiment, the inner wall of the opening 6 is closely connected to the outer peripheral wall of the puncture needle body 3, so that the opening 6 can limit the puncture needle body 3 and prevent the puncture needle body 3 from being misaligned.

[0048] Limiting mechanisms, such as Figures 4 to 6 As shown, the limiting mechanism is disposed between the puncture needle connecting mechanism 1 and the protective end cover 5, having a blocking position that connects the puncture needle connecting mechanism 1 and the protective end cover 5 to prevent relative movement between them, and a separating position that separates the puncture needle connecting mechanism 1 and the protective end cover 5. The limiting mechanism includes: a limiting groove 7 disposed on the protective end cover 5, a limiting protrusion 8 slidably disposed on the puncture needle connecting mechanism 1, and a driving component 9 for driving the limiting protrusion 8 to extend toward the limiting groove 7; in this embodiment, there are three limiting grooves 7, located on the protective end cover 5 and evenly arranged along the length direction of the puncture needle assembly 2; the driving component 9 includes: a linkage 11 connected to the limiting protrusion 8, and an elastic component 12 for driving the linkage 11 to move toward the protective end cover 5, the elastic component 12 being a spring with one end connected to the pull rod and the other end connected to the inner wall of the accommodating cavity 10; the accommodating cavity 10 is respectively provided with a first opening 13 for the limiting protrusion 8 to pass through, and a second opening 14 for the linkage 11 to extend out. Furthermore, the second opening 14 is located at the end of the receiving cavity 10 furthest from the protective end cover 5. By providing a receiving cavity 10 within the aforementioned puncture needle connecting mechanism 1, and by using an elastic member 12 to push the limiting protrusion 8 within the receiving cavity 10 toward the limiting groove 7, the limiting protrusion 8 and the limiting groove 7 can automatically engage to achieve the limiting function. In addition, the aforementioned linkage member 11 extending out of the receiving cavity 10 also facilitates medical workers in driving the limiting protrusion 8 and the limiting groove 7 to separate, thus simply and effectively realizing the unlocking function of the puncture needle protection mechanism.

[0049] The actuating component 15 is used to drive the protective end cover 5 to slide along the length of the puncture needle assembly 2, thereby protecting the puncture needle or exposing the puncture needle.

[0050] A radiofrequency puncture cannula assembly, comprising:

[0051] Puncture needle protection mechanism, and

[0052] The puncture needle assembly 2 includes: a radiofrequency puncture needle, and a puncture cannula 4 sleeved on the outside of the radiofrequency puncture needle.

[0053] Of course, the present invention does not specifically limit whether a limiting mechanism is provided. In other embodiments, the protective end cover 5 can also be detachably sleeved and connected to the puncture needle assembly 2.

[0054] Of course, the present invention does not specifically limit the structure of the puncture needle connecting mechanism 1. In other embodiments, the puncture needle connecting mechanism 1 is a strip structure disposed on the puncture needle assembly 2 and extending along the length direction of the puncture needle assembly 2.

[0055] Of course, the present invention does not specifically limit whether the opening 6 and the puncture needle body 3 are fitted and connected. In other embodiments, a sliding gap is provided between the puncture needle body 3 and the inner wall of the opening 6.

[0056] Of course, the present invention does not specifically limit the structure of the limiting mechanism. In other embodiments, the limiting mechanism includes: a limiting groove 7 provided on the puncture needle connecting mechanism 1, and a limiting protrusion 8 slidably provided on the protective end cover 5; the limiting protrusion 8 is driven to extend or retract toward or away from the limiting groove 7.

[0057] Of course, the present invention does not specifically limit the number and structure of the elastic element 12. In other embodiments, the elastic element is a rubber element with one end connected to the pull rod and the other end connected to the inner wall of the accommodating cavity 10.

[0058] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A puncture needle protection mechanism, characterized in that, include: A puncture needle connection mechanism (1) is provided on the puncture needle assembly (2); A protective end cover (5) is fitted onto the puncture needle and is driven to slide along the length of the puncture needle assembly (2). The protective end cover (5) is provided with an opening (6) through which the puncture needle body (3) of the puncture needle assembly (2) passes. The protective end cover (5) has a puncture needle protection position that covers the puncture needle body (3) and a puncture needle use position that allows the puncture needle body (3) to extend out of the opening (6). The inner wall of the opening (6) is fitted and connected to the outer peripheral wall of the puncture needle body (3). The limiting mechanism is disposed between the puncture needle connecting mechanism (1) and the protective end cover (5), and has a blocking position that connects the puncture needle connecting mechanism (1) and the protective end cover (5) to prevent them from moving relative to each other, and a separating position that separates the puncture needle connecting mechanism (1) and the protective end cover (5). The limiting mechanism includes: a limiting groove (7) disposed on one of the puncture needle connecting mechanism (1) and the protective end cover (5); a limiting protrusion (8) slidably disposed on the other of the puncture needle connecting mechanism (1) and the protective end cover (5); and a driving component (9) for driving the limiting protrusion (8) to extend toward the limiting groove (7); the limiting protrusion (8) is driven to extend or retract toward or away from the limiting groove (7); Multiple limiting grooves (7) are evenly arranged along the length of the puncture needle connecting mechanism (1) or the protective end cover (5); The puncture needle connecting mechanism (1) has a receiving cavity (10) for accommodating the driving component (9); the driving component (9) includes: a linkage (11) connected to the limiting protrusion (8), and an elastic member (12) for driving the linkage (11) to move toward the protective end cover (5); the receiving cavity (10) is respectively provided with a first opening (13) for the limiting protrusion (8) to pass through, and a second opening (14) for the linkage (11) to extend out. The linkage (11) is a pull rod extending along the length of the puncture needle assembly (2), and the second opening (14) is located at one end of the accommodating cavity (10) away from the protective end cover (5); the elastic element (12) is a spring with one end connected to the pull rod and the other end connected to the inner wall of the accommodating cavity (10).

2. A radiofrequency puncture cannula assembly device, characterized in that, include: The puncture needle protection mechanism as described in claim 1, and The puncture needle assembly (2) includes: a radiofrequency puncture needle and a puncture cannula (4) sleeved on the outside of the radiofrequency puncture needle.

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