Pneumoperitoneum needle for laparoscopic surgery

Abstract

The utility model discloses a laparoscopic surgery is with pneumoperitoneum needle relates to the technical field of medical equipment, the utility model aims at solving the depth of pneumoperitoneum needle to stab into the abdominal cavity is difficult to control, is easy to cause the harm to other organs or tissue problem, the utility model discloses a pneumoperitoneum needle body, the pneumoperitoneum needle body includes the sheath, the inner core, the ventilation switch and the needle tube, still include the auxiliary frame, the auxiliary frame includes the bottom plate, the bottom plate lower surface installs the handle for the grasp, the bottom plate upper surface installs the lead screw, the sliding block is connected on the lead screw with screw threads, the sliding block is provided with the limit board, the limit board is opened with the limit gap of the needle tube adaptation on, the needle tube clamping in the gap, the bottom plate is away from the one end of handle still be provided with the support frame, the support frame is provided with the semicircle supporting plate of the needle tube adaptation, the supporting plate corresponds the gap setting.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, specifically to a pneumoperitoneum needle for laparoscopic surgery. Background Technology

[0002] A pneumoperitoneum needle is a medical device used for abdominal puncture. It is used to inflate the abdominal cavity with gas, creating sufficient space for surgery. The pneumoperitoneum needle mainly consists of an outer sheath, an inner core, and a venting switch. The outer sheath is typically 2mm in diameter and comes in various lengths such as 80mm, 120mm, and 150mm.

[0003] Currently, pneumoperitoneum needles are generally inserted into the abdominal cavity manually during surgery. This method requires medical personnel to judge the depth of insertion based on touch and experience. However, this method has a large margin of error, which can lead to excessive insertion depth and damage to other organs or tissues. Utility Model Content

[0004] To address the aforementioned problem of difficulty in controlling the depth of the pneumoperitoneum needle insertion into the abdominal cavity, which could easily damage other organs or tissues, this invention proposes a pneumoperitoneum needle for laparoscopic surgery. The needle includes a needle body comprising an outer sheath, an inner core, a ventilation switch, and a needle tube. It also includes an auxiliary frame with a base plate. A handle for gripping is mounted on the lower surface of the base plate, and a lead screw is mounted on the upper surface of the base plate. A slider is threaded onto the lead screw, and a limiting plate is provided on the slider. The limiting plate has a limiting notch adapted to the needle tube, and the needle tube is clamped within the notch. A support frame is also provided at the end of the base plate opposite the handle, and a semi-circular support plate adapted to the needle tube is provided on the support frame, corresponding to the notch.

[0005] A further feature of this invention is that: a fixing plate and a fixing cylinder are respectively provided at both ends of the base plate; both ends of the lead screw are rotatably connected to the fixing plate and the fixing cylinder respectively; and an adjusting cap is also connected to the end of the lead screw near the fixing cylinder, the adjusting cap being located on the side of the fixing cylinder away from the lead screw.

[0006] A further feature of this invention is that a guide post is connected between the base of the fixing plate and the base of the fixing cylinder, the guide post is arranged parallel to the lead screw, and the slider is slidably connected to the guide post.

[0007] A further feature of this invention is that a retaining plate is fixedly connected to the side wall of the needle tube, and an adjusting member is threadedly connected to the side wall of the needle tube. The adjusting member and the retaining plate are respectively disposed on both sides of the limiting plate.

[0008] The beneficial effects of this utility model are as follows:

[0009] 1. By using the screw and slider, the pneumoperitoneum needle body can be moved. After the needle punctures the abdominal wall, the depth of needle insertion into the abdominal cavity can be adjusted by rotating the adjustment cap. This prevents the needle from penetrating too deeply into the abdominal cavity and causing damage to other devices or tissues.

[0010] 2. By setting up an auxiliary frame, it is easier to operate the pneumoperitoneum needle and improve the stability during the puncture process. Attached Figure Description

[0011] Figure 1 A schematic diagram of the structure of this utility model is shown. Figure 1 .

[0012] Figure 2 A magnified view of a portion at point A is shown.

[0013] Figure 3 A schematic diagram of the structure of this utility model is shown. Figure 2 .

[0014] Figure 4 A reference diagram showing the state when used upside down is provided.

[0015] Reference numerals: 1. Pneumoperitoneum needle body; 11. Outer sheath; 12. Inner core; 13. Vent switch; 14. Needle tube; 141. Clamping plate; 142. Adjusting component; 2. Auxiliary frame; 21. Base plate; 211. Fixing plate; 212. Fixing cylinder; 22. Handle; 23. Lead screw; 24. Sliding block; 241. Limiting plate; 2411. Notch; 25. Support frame; 251. Support plate; 26. Guide post. Detailed Implementation

[0016] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0017] This utility model proposes a pneumoperitoneum needle for laparoscopic surgery, including a pneumoperitoneum needle body 1. The pneumoperitoneum needle body 1 includes an outer sheath 11, an inner core 12, a ventilation switch 13, and a needle tube 14. The connection relationship between the four components is the same as that of the existing pneumoperitoneum needle structure, so it will not be described in detail here.

[0018] It also includes an auxiliary frame 2, which is pistol-shaped. The auxiliary frame 2 includes a base plate 21 with an arc-shaped cross section. A handle 22 for gripping is fixedly connected to the lower surface of the base plate 21. A lead screw 23 is rotatably connected to the upper surface of the base plate 21. The lead screw 23 is parallel to the long side of the base plate 21 and is located in the middle of the base plate 21.

[0019] A slider 24 is threaded onto the lead screw 23. Rotating the lead screw 23 allows the slider 24 to slide along the direction of the lead screw 23. A limiting plate 241 is fixedly connected to the top of the slider 24. The limiting plate 241 has a limiting notch 2411 that matches the needle tube 14. The needle tube 14 is clamped in the notch 2411 and is set parallel to the lead screw 23.

[0020] A U-shaped support frame 25 is fixedly connected to the upper surface of the base plate 21. The support frame 25 is located at one end of the base plate 21 away from the handle 22. A semi-circular support plate 251 is fixedly connected to the middle position of the support frame 25. The support plate 251 is adapted to the needle tube 14, and the support plate 251 is set with a corresponding notch 2411 to support the needle tube 14.

[0021] A fixing plate 211 and a fixing cylinder 212 are fixedly connected to the upper surface of the base plate 21. The fixing cylinder 212 is located at the end of the base plate 21 near the handle 22 and is fixedly connected to the base plate 21 via a base. The fixing plate 211 is located at the end of the base plate 21 away from the handle 22 and is located below the support frame 25. The two ends of the lead screw 23 are rotatably connected to the fixing plate 211 and the fixing cylinder 212, respectively. An adjusting cap is fixedly connected to the end of the lead screw 23 that is connected to the fixing cylinder 212. By rotating the adjusting cap, the lead screw 23 can be rotated.

[0022] A guide post 26 is also provided between the fixed plate 211 and the base. The two ends of the guide post 26 are fixedly connected to the fixed plate 211 and the base respectively. The guide post 26 is located directly below the lead screw 23 and is parallel to the lead screw 23. The slider 24 is slidably connected to the guide post 26.

[0023] A clamping plate 141 is fixedly connected to the side wall of the needle tube 14. The length of the clamping plate 141 is greater than the width of the notch 2411. An adjusting member 142 is also threadedly connected to the needle tube 14. The length of the adjusting member 142 is also greater than the width of the notch 2411. That is, the clamping plate 141 and the adjusting member 142 are respectively set on both sides of the limiting plate 241. By rotating the adjusting member 142, the adjusting member 142 moves towards the clamping plate 141, thereby reducing the distance between the adjusting member 142 and the clamping plate 141. This clamps the needle tube 14 within the notch 2411, thus fixing the needle tube 14.

[0024] Usage process: First, fix the pneumoperitoneum needle body 1 on the auxiliary frame 2 through the adjusting member 142 and the clamping plate 141. Then rotate the screw 23 to adjust the slider 24 along the direction of the screw 23, thereby driving the pneumoperitoneum needle body 1 to move and adjust the length of the needle tube 14 extending out of the support plate 251 so that it extends long enough to pierce the abdominal cavity.

[0025] Secondly, the medical personnel perform the operation by gripping handle 22, inserting needle 14 into the patient's skin until it punctures the abdominal wall. If there is still a certain distance between the front end of base plate 21 and the patient's skin, the adjusting slider 24 is moved towards the fixed cylinder 212. After moving a certain distance, needle 14 is withdrawn from the abdominal cavity. Then, the auxiliary frame 2 is pushed forward to return needle 14 to the abdominal cavity. This adjustment is repeated until the front end of base plate 21 is against the patient's skin, and needle 14 is precisely positioned where it just punctured the abdominal wall. It should be noted that during this process, the distance the slider 24 slides backward is based on the initial distance between base plate 21 and the skin.

[0026] Finally, by rotating the adjusting cap, the slider 24 slides towards the fixed plate 211, thereby driving the needle tube 14 to slowly advance into the abdominal cavity. The distance that the slider 24 slides is the length of the needle tube 14 that is advanced into the abdominal cavity.

[0027] It should be noted that the usage of this application requires adjustment based on different puncture situations. When the puncture direction is vertical or greater than 45°, the medical personnel can hold the handle 22 upright, with the base plate 21 positioned above their hand for operation. However, if the puncture direction is less than 45°, the handle 22 may interfere with the patient's body, therefore the medical personnel need to hold the handle 22 in reverse, i.e., refer to... Figure 4 The state shown is to avoid the impact caused by handle 22.

[0028] When operating with the reverse grip handle 22, before the needle is inserted into the skin, the medical personnel can gently hold the needle 14 with their other hand to prevent the needle 14 from shaking out of the tray 251. After the needle 14 is inserted into the skin, the hand holding the needle 14 can be released.

[0029] It should also be noted that corresponding scale lines can be drawn on the upper and lower surfaces of the base plate 21 for accurate reference of the distance the slider 24 slides out. The scale lines are omitted and not shown in the accompanying drawings of this application.

[0030] In summary, this invention, through the cooperation of the lead screw 23 and the slider 24, enables the movement of the pneumoperitoneum needle body 1. After the needle tube 14 pierces the abdominal wall, the depth of insertion into the abdominal cavity can be adjusted by rotating the adjusting cap, preventing the needle tube 14 from penetrating too deeply and causing damage to other devices or tissues. The auxiliary frame 2 further facilitates the operation of the pneumoperitoneum needle and improves stability during the puncture process.

[0031] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0032] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model according to the specific circumstances.

[0034] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0035] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A pneumoperitoneum needle for laparoscopic surgery, comprising a pneumoperitoneum needle body (1), wherein the pneumoperitoneum needle body (1) includes an outer sheath (11), an inner core (12), a ventilation switch (13), and a needle tube (14), characterized in that: It also includes an auxiliary frame (2), which includes a base plate (21). A handle (22) for gripping is installed on the lower surface of the base plate (21). A lead screw (23) is installed on the upper surface of the base plate (21). A slider (24) is threaded onto the lead screw (23). A limiting plate (241) is provided on the slider (24). A limiting notch (2411) adapted to the needle tube (14) is opened on the limiting plate (241). The needle tube (14) is clamped in the notch (2411). A support frame (25) is also provided at the end of the base plate (21) away from the handle (22). A semi-circular support plate (251) adapted to the needle tube (14) is provided on the support frame (25). The support plate (251) is set corresponding to the notch (2411).

2. The pneumoperitoneum needle for laparoscopic surgery according to claim 1, characterized in that: The base plate (21) has a fixing plate (211) and a fixing cylinder (212) at its two ends respectively. The two ends of the lead screw (23) are rotatably connected to the fixing plate (211) and the fixing cylinder (212) respectively. An adjusting cap is also connected to the end of the lead screw (23) near the fixing cylinder (212). The adjusting cap is located on the side of the fixing cylinder (212) away from the lead screw (23).

3. The pneumoperitoneum needle for laparoscopic surgery according to claim 2, characterized in that: A guide post (26) is also connected between the base of the fixed plate (211) and the fixed cylinder (212). The guide post (26) is arranged parallel to the lead screw (23), and the slider (24) is slidably connected to the guide post (26).

4. The pneumoperitoneum needle for laparoscopic surgery according to claim 1, characterized in that: A clamping plate (141) is fixedly connected to the side wall of the needle tube (14), and an adjusting member (142) is also threadedly connected to the side wall of the needle tube (14). The adjusting member (142) and the clamping plate (141) are respectively disposed on both sides of the limiting plate (241).

Images