Veress needle

Abstract

The present invention discloses a pneumoperitoneum needle, comprising an outer needle, an inner needle, an inflation component and an indication component, wherein the inner needle can move inside the outer needle, the inner needle has an air cavity, the inflation component is used to inflate the air cavity, the indication component comprises an elastic member, an indication element and a moving member, the fixed member is electrically connected to the indication element, and the moving member can follow the movement of the inner needle, so that the moving member contacts the fixed member and forms a conductive path with the fixed member, the elastic member and the indication element, or the moving member is away from the fixed member and the conductive path is disconnected. The pneumoperitoneum needle in the embodiment of the present invention, by the change of the resisting effect on the inner needle before and after the pneumoperitoneum needle punctures the abdomen of the human body, makes the moving member approach or move away from the fixed member, so as to realize the opening and closing of the path where the indication element is located, so that the indication element marks the puncture depth of the pneumoperitoneum needle, which is convenient for medical personnel to operate and effectively ensures the quality of the operation.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices and in particular to a Veress needle. Background Art

[0002] The pneumoperitoneum needle is a surgical instrument used in abdominal surgery to determine whether the needle insertion position is correct and to fill with carbon dioxide gas to form pneumoperitoneum. In laparoscopic surgery, it is necessary to first establish pneumoperitoneum through the pneumoperitoneum needle before puncturing. During the traditional pneumoperitoneum needle puncture process, the doctor can only judge whether the puncture is in place based on experience, hand feel, needle insertion time, etc. The depth of needle insertion is difficult to grasp, resulting in the needle being inserted too shallowly, causing subcutaneous emphysema, or the needle being inserted too deeply, puncturing human tissue, seriously affecting the progress and quality of the operation. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a Veress needle, which is convenient for obtaining the Veress needle puncture situation.

[0004] The Veress needle according to an embodiment of the present invention comprises:

[0005] External needle;

[0006] An inner needle is inserted into the outer needle and can move inside the outer needle, and the inner needle has an air cavity;

[0007] An inflation component, connected to the inner needle and used for inflating the air cavity;

[0008] The indicating assembly comprises an elastic member, an indicating element and a moving member, wherein two ends of the elastic member are electrically connected to the indicating element and the moving member respectively;

[0009] Among them, the indication component also includes a fixing part, which is electrically connected to the indication element, and the movable part can follow the movement of the inner needle so that the movable part contacts the fixing part and forms a conductive path with the fixing part, the elastic part and the indication element, or the movable part moves away from the fixing part and disconnects the conductive path.

[0010] The Veress needle according to the embodiment of the present invention has at least the following beneficial effects:

[0011] The Veress needle in the embodiment of the present invention changes the resisting force on the inner needle before and after the Veress needle punctures the abdomen of the human body, so that the movable part is moved closer to or farther away from the fixed part, so as to realize the opening and closing of the passage where the indicating element is located, so that the indicating element marks the puncture depth of the Veress needle, which is convenient for medical personnel to operate and effectively ensures the quality of the operation.

[0012] According to some embodiments of the present invention, the pneumoperitoneum needle further includes a mounting seat, the indicator assembly is accommodated inside the mounting seat, the ends of the inner needle and the outer needle extend into the mounting seat, and part of the inflation assembly extends into the mounting seat and is connected to the inner needle.

[0013] According to some embodiments of the present invention, the pneumoperitoneum needle further includes a first mounting member, which is accommodated in the mounting seat, one end of the outer needle is fixedly connected to the first mounting member, the inner needle passes through the first mounting member and is connected to the inflation component, and the inner needle can move relative to the first mounting member.

[0014] According to some embodiments of the present invention, the pneumoperitoneum needle further includes a second mounting member, which is accommodated in the mounting seat, the indicating element is electrically connected to the second mounting member, the elastic member is located between the first mounting member and the second mounting member, the two ends of the elastic member respectively abut the second mounting member and the movable member, and the inner needle passes through the second mounting member and can move relative to the second mounting member.

[0015] According to some embodiments of the Veress needle of the present invention, the fixing member is attached to the surface of the first mounting member.

[0016] According to some embodiments of the Veress needle of the present invention, the indication assembly further includes a power supply element, the power supply element is accommodated in the mounting seat, and the power supply element is electrically connected to the indication element and the fixing member.

[0017] The Veress needle according to some embodiments of the present invention further includes a blocking member, which can be inserted between the moving member and the fixed member, or withdrawn from between the moving member and the fixed member.

[0018] According to some embodiments of the pneumoperitoneum needle of the present invention, the mounting seat has an insertion groove, and the insertion groove is used for the blocking member to pass through and extend into the mounting seat.

[0019] According to some embodiments of the pneumoperitoneum needle of the present invention, the inflation component includes an inflation knob and an inflation seat, the inflation seat is sleeved on the outside of the inflation knob, and the surface of the inflation knob has a groove.

[0020] According to the Veress needle of some embodiments of the present invention, the inflation component further includes a protruding piece, and the protruding piece is integrally connected to the inner needle.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 It is a schematic structural diagram of an embodiment of a Veress needle of the present invention;

[0024] Figure 2 for Figure 1 A cross-sectional view of an embodiment of a pneumoperitoneum needle;

[0025] Figure 3 for Figure 1 Schematic diagram of the structure of the pneumoperitoneum needle after the mounting seat is hidden;

[0026] Figure 4 for Figure 1 An exploded view of an embodiment of the pneumoperitoneum needle.

[0027] Reference numerals:

[0028] Inner needle 100, air cavity 110, air hole 120;

[0029] outer needle 200, with a pointed end 210;

[0030] Inflatable component 300, inflation knob 310, groove 311, inflation seat 320, extension piece 330;

[0031] Indicating component 400, elastic member 410, indicating element 420, pin 421, moving member 430, fixing member 440, power supply element 450;

[0032] Mounting seat 500, first mounting groove 510, second mounting groove 520, first body 530, second body 540, anti-slip stripes 550;

[0033] A first mounting member 600;

[0034] A second mounting member 700;

[0035] Barrier 800. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In the description of the present invention, the meaning of "a plurality" is more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0041] Reference Figure 1 and Figure 3In one embodiment of the present invention, the pneumoperitoneum needle includes an inner needle 100, an outer needle 200, an inflation component 300 and an indication component 400. The inner needle 100 and the outer needle 200 cooperate with each other to puncture the abdomen of the human body. The inflation component 300 is used to inflate the inner needle 100 to form pneumoperitoneum in the human body. The indication component 400 is used to mark the puncture depth of the pneumoperitoneum needle to facilitate medical staff to know the puncture situation. Specifically, the inner needle 100 is inserted into the outer needle 200, and the inner needle 100 can move inside the outer needle 200. The inner needle 100 has an air cavity 110. The inflation component 300 is connected to the inner needle 100, and the inflation component 300 is used to inflate the air cavity 110 of the inner needle 100; the indication component 400 includes an elastic member 410, an indication element 420 and a moving member 430, one end of the elastic member 410 is electrically connected to the indication element 420, and the other end of the elastic member 410 is electrically connected to the moving member 430, and the moving member 430 can move with the expansion and contraction of the elastic member 410; the indication component 400 includes an elastic member 410, an indication element 420 and a moving member 430, and the moving member 430 can move with the expansion and contraction of the elastic member 410; The indication component 400 also includes a fixing part 440, which is electrically connected to the indicating element 420. When the moving part 430 follows the movement of the inner needle 100, the moving part 430 can approach or move away from the fixing part 440. When the moving part 430 and the fixing part 440 contact each other, the moving part 430, the elastic part 410, the indicating element 420, and the fixing part 440 form a conductive path, and the indicating element 420 gives an indication. After the moving part 430 moves away from the fixing part 440, the conductive path between the moving part 430 and the fixing part 440 is disconnected, and the indicating element 420 stops indicating.

[0042] Specifically, during the use of the pneumoperitoneum needle, the inner needle 100 is supported by the human skin and retracts into the outer needle 200. At this time, the elastic member 410 is in a compressed state, the movable member 430 is not in contact with the fixed member 440, a conductive path cannot be formed, and the indicating element 420 cannot work. After the outer needle 200 pierces the human skin and enters the abdominal cavity, the support effect on the inner needle 100 disappears. Under the push of the elastic force of the elastic member 410, the inner needle 100 extends out from the outer needle 200, the elastic member 410 stretches, and the movable member 430 moves under the elastic force of the elastic member 410. The movable member 430 gradually approaches the fixed member 440 and contacts the fixed member 440. Thus, a conductive path is formed among the elastic member 410, the movable member 430, the fixed member 440, and the indicating element 420. The indicating element 420 works and issues an instruction to the medical staff, and the medical staff stops the puncture.

[0043] Therefore, the Veress needle in the embodiment of the present invention changes the resisting force on the inner needle 100 before and after the Veress needle punctures the human abdomen, so that the movable part 430 is moved closer to or farther away from the fixed part 440, so as to realize the opening and closing of the passage where the indicating element 420 is located, so that the indicating element 420 marks the puncture depth of the Veress needle, which is convenient for medical staff to operate and effectively ensures the quality of the operation.

[0044] It should be noted that the elastic member 410, the moving member 430, and the fixing member 440 are all made of conductive materials, such as metal, so that the various components in the indicating assembly 400 can quickly form a conductive path. Figure 2 and Figure 3 The end of the outer needle 200 has a tip 210, which is used to contact the human skin, pierce the human skin and insert into the abdominal cavity; the end of the inner needle 100 has an air hole 120, which is connected to the air cavity 110. After the inner needle 100 extends from the outer needle 200, the air hole 120 leaks out and enters the abdominal cavity. By inflating the air cavity 110 through the inflation component 300, gas can enter the abdominal cavity and fill the abdominal cavity.

[0045] It should be noted that Figure 1 This is a schematic diagram of the structure behind the hidden part of the Veress needle installation seat. Figure 3 This is a schematic diagram of the structure after the Veress needle is fully installed. Figures 1 to 3 In one embodiment of the present invention, the Veress needle further includes a mounting seat 500, which is used to mount other components, protect other components, and prevent components from being exposed. The mounting seat 500 can also be held by medical staff to perform various operations on the Veress needle. Specifically, the indicator component 400 is accommodated inside the mounting seat 500, one end of the inner needle 100 extends into the mounting seat 500 and is connected to the indicator component 400, and part of the inflation component 300 extends into the mounting seat 500 and is connected to the inner needle 100. Therefore, the connection between the inflation component 300 and the inner needle 100, and the connection between the inner needle 100 and the indicator component 400 are all located inside the mounting seat 500, which can prevent the inner needle 100 from being contaminated by the external environment, and can prevent the inner needle 100 from being interfered with by external devices, thereby affecting the surgical process.

[0046] In order to facilitate the installation of the indication assembly 400 and to make the indication assembly 400 firmly fixed in the mounting seat 500, an embodiment of the present invention further includes a first mounting member 600, which is accommodated in the mounting seat 500. One end of the outer needle 200 extends into the mounting seat 500 and is fixedly connected to the first mounting member 600. The inner needle 100 passes through the first mounting member 600 and is connected to the inflation assembly 300. The inner needle 100 can move relative to the first mounting member 600. The outer needle 200 is fixed by the first mounting member 600, so that one end of the outer needle 200 is fixed in the mounting seat 500, so that the medical staff can hold and push the mounting seat 500 to pierce the tip 210 of the outer needle 200 into the abdomen of the human body; in addition, the first mounting member 600 is used to avoid the movement of the inner needle 100, and supports the inner needle 100, providing a guiding role for the movement of the inner needle 100.

[0047] It should be noted that, combined with Figure 3 and Figure 4, a first mounting groove 510 for mounting the first mounting member 600 is provided in the mounting seat 500, and the first mounting groove 510 can limit the first mounting member 600 to prevent the first mounting member 600 from moving in the mounting seat 500. Specifically, in one embodiment of the present invention, the first mounting groove 510 and the first mounting member 600 are both stepped, so that the groove wall of the first mounting groove 510 hinders the first mounting member 600 from moving along the moving direction of the inner needle 100; in addition, in one embodiment of the present invention, a protrusion is provided on the outer edge of the first mounting member 600, and a concave portion for the protrusion to be embedded is provided in the first mounting groove 510, and the first mounting member 600 is prevented from rotating in the mounting seat 500 through the mutual cooperation between the concave portion and the convex portion, thereby achieving the fixation of the first mounting member 600; in other embodiments, the cross-sections of the first mounting member 600 and the first mounting groove 510 can also be set to be rectangular, multi-deformed, etc., which can also prevent the first mounting member 600 from rotating in the mounting seat 500.

[0048] In one embodiment of the present invention, a second mounting member 700 is further included, and the second mounting member 700 is accommodated in the mounting seat 500. The indicating element 420 is electrically connected to the second mounting member 700. The elastic member 410 is located between the first mounting member 600 and the second mounting member 700. The two ends of the elastic member 410 respectively abut against the first mounting member 600 and the moving member 430. The inner needle 100 passes through the second mounting member 700 and can move relative to the second mounting member 700. The first mounting member 600 and the second mounting member 700 respectively support the inner needle 100 from different positions, and the inner needle 100 is limited by the first mounting member 600 and the second mounting member 700 so that the inner needle 100 moves smoothly.

[0049] It should be noted that the first mounting member 600 and the second mounting member 700 are both provided with a through hole for the inner needle 100 to pass through, and the inner needle 100 can slide in the through hole; the through holes of the first mounting member 600 and the second mounting member 700 can be coaxial with the inner needle 100 to ensure that the inner needle 100 can slide smoothly in the through hole, thereby preventing the first mounting member 600 and the second mounting member 700 from interfering with the movement of the inner needle 100.

[0050] In one embodiment of the present invention, the indicator element 420 is mounted on the second mounting member 700 and is electrically connected to the second mounting member 700, thereby avoiding the need to provide a mounting position for the indicator element 420 inside the mounting seat 500. The indicator element 420 can be fixed to the second mounting member 700 by welding or threaded fastening.

[0051] It should be noted that a second mounting groove 520 for mounting the second mounting member 700 is provided in the mounting seat 500, and the second mounting groove 520 limits the second mounting member 700. The edge of the second mounting member 700 is embedded in the second mounting groove 520, and the inner wall of the second mounting groove 520 prevents the second mounting member 700 from moving along the moving direction of the inner needle 100; the outer edge of the second mounting member 700 protrudes, and the groove wall of the second mounting groove 520 limits the second mounting member 700 to prevent the second mounting member 700 from rotating in the mounting seat 500.

[0052] The indicating assembly 400 further includes a power supply element 450, which is used to supply power to the indicating element 420. In order to make the overall structure of the Veress needle more concise and avoid affecting the convenience of operation of the Veress needle due to the power supply element 450 being outside the Veress needle, in one embodiment of the present invention, the power supply element 450 is accommodated inside the mounting seat 500, and the power supply element 450 is electrically connected to the indicating element 420 and the fixing member 440. The power supply element 450 can be selected as a battery, and the number of batteries can be reasonably selected according to the specific power requirements of the indicating element 420.

[0053] Specifically, two pins 421 extend from the indicator element 420, and the two pins 421 are respectively connected to the elastic member 410 and the power supply element 450, so that after the moving member 430 contacts the fixed member 440, the components in the indicator assembly 400 can form a conductive path, and the indicator element 420 issues an indication, so that the medical staff can quickly know whether the pneumoperitoneum needle is punctured in place. The indicator element 420 can be selected as an LED light, an alarm, or a combination of an LED light and an alarm, etc., to produce a warning effect through sound and light.

[0054] In one embodiment of the present invention, one end of the fixing member 440 is connected to the power supply element 450, and the other end of the fixing member 440 is attached to the surface of the first mounting member 600, so that the fixing member 440 is kept fixed in the mounting seat 500, and the movable member 430 and the fixing member 440 have a sufficient contact surface, so that the fixing member 440 and the movable member 430 can be quickly connected. Specifically, the end of the fixing member 440 can be annular, and the inner needle 100 passes through the inside of the fixing member 440 to prevent the fixing member 440 from interfering with the movement of the inner needle 100.

[0055] It should be noted that the mounting base 500 is also provided with a plurality of slots for mounting the power supply element 450 , the pins 421 , and the fixing member 440 . The slots are interconnected to facilitate electrical connection between the components and to keep the components stable in the mounting base 500 .

[0056] It should be noted that the elastic member 410 is sleeved on the outside of the inner needle 100. The inner needle 100 passes through the first mounting member 600, the fixed member 440, the movable member 430, the elastic member 410 and the second mounting member 700 from right to left in sequence. The movable member 430 and the inner needle 100 are relatively fixed, and the two can move relative to the first mounting member 600, the second mounting member 700 and the fixed member 440 at the same time. When the movable member 430 contacts the fixed member 440, the components are enclosed to form a closed passage, and the power supply element 450 supplies power to the indicating element 420. When the movable member 430 is away from the fixed member 440, the closed passage is disconnected, and the indicating element 420 stops indicating. Through the connection of the above-mentioned components, the various components in the indicating assembly 400 are combined into a whole, and the on-off between the movable member 430 and the fixed member 440 is realized through the coordinated movement between different components.

[0057] Reference Figure 1 and Figure 3 In one embodiment of the present invention, the Veress needle further includes a barrier 800, which is used to be inserted or withdrawn between the moving part 430 and the fixed part 440. Specifically, when the Veress needle is not in use, the elastic part 410 is in an extended state, the moving part 430 is close to the fixed part 440 due to the elastic force of the elastic part 410, and the barrier 800 is inserted between the fixed part 440 and the moving part 430. The barrier 800 separates the fixed part 440 from the moving part 430, so that the passage in the indicating component 400 remains disconnected to save electricity and prevent leakage inside the indicating component 400; before the Veress needle is used, the barrier 800 is withdrawn from between the fixed part 440 and the moving part 430, the moving part 430 can continue to approach the fixed part 440 and contact the fixed part 440, and the indicating element 420 indicates. Through this process, it can be detected whether the indicating element 420 can work normally to ensure that each component in the indicating component 400 can form a closed passage.

[0058] It should be noted that the mounting seat 500 is also provided with a plug-in slot, which is connected to the cavity of the mounting seat 500 containing the fixed member 440 and the movable member 430, and the blocking member 800 can extend into the mounting seat 500 through the plug-in slot and separate the fixed member 440 from the movable member 430. In addition, a notch is provided at the end of the blocking member 800, and the notch can be inserted into the inner needle 100, so that after the blocking member 800 is inserted into the mounting seat 500, the inner needle 100 is stuck in the notch, so that the blocking member 800 is stably plugged into the mounting seat 500.

[0059] Reference Figure 3 and Figure 4In one embodiment of the present invention, the inflation component 300 includes an inflation knob 310 and an inflation seat 320. The inflation seat 320 is sleeved on the outside of the inflation knob 310. The inflation seat 320 and the inflation knob 310 are both provided with vents. The inflation knob 310 can rotate in the inflation seat 320. When the inflation knob 310 is connected to the vents of the inflation seat 320, air can be inflated into the air cavity 110 of the inner needle 100. By rotating the inflation knob 310, the on and off of the inflation process can be controlled. In order to reduce the contact area between the inflation knob 310 and the inflation seat 320 and reduce the friction between the two, in one embodiment of the present invention, a groove 311 is provided on the surface of the inflation knob 310. The groove 311 can be provided in plurality to reduce the friction between the inflation knob 310 and the inflation seat 320. In addition, lubricating oil can be inserted into the groove 311 to make the rotation of the inflation knob 310 smoother.

[0060] In one embodiment of the present invention, the inflatable component 300 further includes a protruding piece 330, which is connected to the inflatable seat 320, and the protruding piece 330 extends into the mounting seat 500 and is integrally connected to the inner needle 100 to ensure the airtightness of the connection between the inner needle 100 and the inflatable component 300. The protruding piece 330 and the inner needle 100 can be formed by injection molding, and the protruding piece 330 and the inflatable seat 320 can also be integrally connected, or fixed by welding or threaded fastening.

[0061] In addition, refer to Figure 4 In one embodiment of the present invention, the mounting seat 500 includes a first body 530 and a second body 540. The first body 530 and the second body 540 are combined to form the mounting seat 500. The mounting seat 500 is set as a combined structure to facilitate the assembly of other components and the mounting seat 500. The first body 530 and the second body 540 are provided with mutually matching protrusions and card slots, so that the first body 530 and the second body 540 are mutually engaged; the mounting seat 500 can be selected from a transparent material to facilitate the acquisition of the indication status of the indicating element 420; the surface of the mounting seat 500 is provided with anti-slip stripes 550, which are convenient for medical staff to hold and perform corresponding operations.

[0062] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A Veress needle, characterized in that: include: External needle; An inner needle is inserted into the outer needle and can move inside the outer needle, and the inner needle has an air cavity; An inflation component, connected to the inner needle and used for inflating the air cavity; The indicating assembly comprises an elastic member, an indicating element and a moving member, wherein two ends of the elastic member are electrically connected to the indicating element and the moving member respectively; The indicating assembly further comprises a fixing member, the fixing member is electrically connected to the indicating element, and the moving member can follow the movement of the inner needle, so that the moving member contacts the fixing member and forms a conductive path with the fixing member, the elastic member and the indicating element, or the moving member is away from the fixing member and the conductive path is disconnected; It also includes a mounting seat, a first mounting member and a second mounting member, the indicating component is accommodated inside the mounting seat, the ends of the inner needle and the outer needle extend into the mounting seat, part of the inflatable component extends into the mounting seat and is connected to the inner needle, the first mounting member is accommodated in the mounting seat, one end of the outer needle is fixedly connected to the first mounting member, the inner needle passes through the first mounting member and is connected to the inflatable component, the inner needle can move relative to the first mounting member, the second mounting member is accommodated in the mounting seat, the indicating element is electrically connected to the second mounting member, the elastic member is located between the first mounting member and the second mounting member, the two ends of the elastic member respectively abut the second mounting member and the moving member, the inner needle passes through the second mounting member and can move relative to the second mounting member, and the fixing member is attached to the surface of the first mounting member.

2. The Veress needle according to claim 1, characterized in that: The indicating assembly further comprises a power supply element, which is accommodated in the mounting seat and is electrically connected to the indicating element and the fixing member.

3. The Veress needle according to claim 1, characterized in that: The utility model further comprises a blocking member, wherein the blocking member can be inserted between the moving member and the fixing member, or can be withdrawn from between the moving member and the fixing member.

4. The Veress needle according to claim 3, characterized in that: The mounting seat has an inserting slot, and the inserting slot is used for the blocking member to pass through and extend into the mounting seat.

5. The Veress needle according to any one of claims 1 to 4, characterized in that: The inflation component comprises an inflation knob and an inflation seat. The inflation seat is sleeved on the outside of the inflation knob. The surface of the inflation knob is provided with a groove.

6. The Veress needle according to claim 5, characterized in that: The inflation component also includes a protruding piece, and the protruding piece is integrally connected to the inner needle.

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