A lancing device

Abstract

The application discloses a puncture device, which comprises a sealing assembly, a sleeve assembly and a puncture cone, the puncture cone is inserted into the sleeve assembly through the sealing assembly, the sealing assembly comprises a locking component and an unlocking device, an inner wall of a sealing shell is provided with a stop portion, the locking component is inserted into the sealing shell until abutting against the stop portion of the sealing shell, so as to lock the sealing assembly and the sleeve assembly, and the unlocking device is used for unlocking the sealing assembly and the sleeve assembly. The puncture device of the application adopts the locking component to lock the sealing assembly and the sleeve assembly, and the design is simple, convenient to process and flexible to disassemble, so that the operation of the doctor in the operation process is very convenient.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to a puncture device. Background Technology

[0002] A laparoscopic puncture device is a minimally invasive surgical instrument. During the procedure, a small incision is made in the abdomen, and the puncture device, equipped with a puncture cone, penetrates the entire thickness of the abdominal wall, establishing a passage between the outside and the abdominal cavity. This allows other minimally invasive surgical instruments to enter the abdominal cavity, completing the surgical procedure and achieving the same purpose as traditional open surgery. The laparoscopic puncture device mainly consists of two parts: a puncture cannula and a puncture cone. In use, the puncture cone works in conjunction with the puncture cannula to penetrate the abdominal wall. The puncture blade at the tip of the cone forces its way through the skin tissue into the abdominal cavity, leaving the puncture cannula in the abdominal wall. The puncture cannula serves as a passage for various surgical instruments to enter the abdominal cavity, allowing the surgeon to perform the surgical procedure and complete the task.

[0003] During surgery, doctors remove numerous diseased tissues within the pneumoperitoneum. These tissues vary in size and need to be retrieved through the instrument port of a puncture device. Currently, the diameter of the instrument port on these devices is relatively small. When larger tissues need to be removed, the puncture device assembly must be disassembled to facilitate retrieval. Specifically, this requires simultaneous two-handed operation: one hand holds the cannula while the other twists and turns other components of the puncture device. This obviously requires the doctor to put down other surgical instruments, affecting their use of other instruments, reducing their surgical feel, and prolonging the patient's surgery time.

[0004] How to solve the technical problem of inconvenient disassembly of puncture devices in existing technologies is an urgent technical challenge that needs to be addressed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to solve the problem of inconvenient disassembly of the puncture device in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A puncture device includes a sealing assembly, a cannula assembly, and a puncture cone, wherein the puncture cone passes through the sealing assembly and is inserted into the cannula assembly. The sealing assembly includes a locking component and an unlocking device. A stop portion is provided on the inner sidewall of the sealing housing. The locking component is inserted into the sealing housing until it abuts against the stop portion of the sealing housing to lock the sealing assembly and the cannula assembly. The unlocking device is used to release the locking of the sealing assembly and the cannula assembly.

[0008] The puncture device of the present invention uses a locking component to lock the sealing assembly and the sleeve assembly, which is simple in design and easy to manufacture.

[0009] Furthermore, the locking component is provided with at least one first locking buckle, the first locking buckle including a buckle body and a hook-shaped end, and the sleeve assembly is provided with at least one first slot. When the sealing component is inserted downward into the sleeve assembly, the hook-shaped end of the first locking buckle is locked in the first slot.

[0010] The puncture device of the present invention uses the hook-shaped end of the first locking buckle to lock in the first slot to complete the locking of the sealing component and the cannula component. The disassembly is very flexible, making it very convenient for doctors to operate during surgery.

[0011] Furthermore, the locking component is provided with at least one first positioning rod, and the sleeve assembly is provided with at least one first positioning groove. When the sealing component is inserted downward into the sleeve assembly, the first positioning rod is engaged and fixed with the first positioning groove.

[0012] To ensure a tighter connection between the sealing assembly and the sleeve assembly, this invention employs a method of inserting a first positioning rod into a first positioning groove to position the sealing assembly and the sleeve assembly, facilitating quick disassembly by the surgeon during the operation.

[0013] Furthermore, the first locking buckle and the first positioning rod are located on the same circumferential end face of the sealing assembly, the length of the first locking buckle is less than the length of the first positioning rod, and the first slot and the first positioning slot are located on the same circumferential end face of the sleeve assembly.

[0014] To facilitate quick disassembly of the sealing assembly and the sleeve assembly, this invention employs a positioning-then-locking method, wherein the length of the first positioning rod is longer than that of the first locking buckle.

[0015] Furthermore, the upper end face of the sleeve assembly is also provided with an air-blocking sealing cap. The sealing assembly inserts the air-blocking sealing cap into the sleeve assembly by squeezing it. Under the pressure of the sealing assembly, the air-blocking sealing cap is compressed to generate elastic force.

[0016] In order to improve the sealing effect, this invention adds a gas-blocking sealing cap device, enhances the sealing performance of the sealing assembly and the sleeve assembly, and improves the sealing effect.

[0017] Furthermore, the sealing assembly has at least one unlocking device on its sidewall. The unlocking device includes an ejector block. When the unlocking device is subjected to an external force, the ejector block moves toward the first locking buckle until it abuts against the locking surface of the first locking buckle and reaches a predetermined position. The locking body of the first locking buckle tilts under the pushing force of the ejector block, causing the hook-shaped end of the first locking buckle to disengage from the first slot. The sealing assembly pops upward under the elastic force of the gas-blocking sealing cap.

[0018] The present invention includes an unlocking device that enables the sealing components of the puncture device to be separated with a single click during disassembly.

[0019] Furthermore, the sealing assembly includes a sealing cap.

[0020] The sealing cover is provided with a second slot, and the sealing housing is provided with a corresponding second locking buckle. The sealing cover is pressed downward into the sealing housing by the locking component and locked with the second locking buckle of the sealing housing by the second slot.

[0021] Furthermore, the sleeve assembly also includes a sealing cap, which is fitted onto the gas-blocking sealing cap. The side wall of the sealing cap is provided with at least one clearance groove, which is located at the opposite position of the first locking slot. When the first locking buckle is tilted, it is used to make way for the first locking buckle.

[0022] Furthermore, at least one second positioning groove is provided on the lower side wall of the sealing cap, and at least one second positioning rod is correspondingly provided on the upper end of the sleeve assembly 5. The second positioning groove of the sealing cap is inserted downward into the second positioning rod.

[0023] In the positioning rod.

[0024] Furthermore, the puncture cone includes an upper housing, an integrated mechanism, a lower housing, and a puncture rod. The upper housing is connected to the proximal end of the puncture rod sequentially through the integrated mechanism and the lower housing.

[0025] The integrated machine is provided with a third positioning rod, and the surface of the lower housing is provided with a corresponding third positioning rod channel for limiting the third positioning rod.

[0026] Furthermore, the integrated pivot is symmetrically provided with a third locking buckle, and the sealing cover is correspondingly provided with a third slot. The piercing cone is limited by the third positioning rod of the integrated pivot and the third positioning rod channel of the sealing cover, and is pressed downward, so that the third locking buckle of the integrated pivot is locked in the third slot of the sealing cover.

[0027] 5. Furthermore, the third locking buckle of the integrated mechanism is made of elastic material, so that when the puncture is removed...

[0028] When the cone is inserted, press the third locking buckle ends on both sides of the integrated mechanism, and the two third locking buckles on the integrated mechanism will move inward toward each other until they disengage from the third slot, and the puncture cone can be removed.

[0029] With such a design, the present invention has at least the following advantages: 0(1) By adding a locking component, the present invention enables doctors to easily separate the sealing component and the cannula component with one click during the operation, thereby improving the efficiency of the operation.

[0030] (2) The present invention uses the hook-shaped end of the first locking buckle to lock the sealing component and the sleeve component by inserting it into the first slot. The design is simple, easy to process, and very flexible to disassemble, making it very convenient for doctors to operate during surgery.

[0031] (3) The present invention has a simple structure, good effect, low cost and easy process implementation. Attached Figure Description

[0032] The above is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Figure 1 This is a structural block diagram of the puncture device of the present invention;

[0034] Figure 2 This is a cross-sectional view of a sealing assembly according to an embodiment of the present invention;

[0035] Figure 3 This is an exploded view of a sealing assembly according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the structure of a sealing cover according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of a sealed outer shell according to an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the structure of a locker according to an embodiment of the present invention;

[0039] Figure 7 This is a schematic diagram of the structure of an unlock button according to an embodiment of the present invention;

[0040] Figure 8 This is a schematic diagram of a sleeve assembly structure according to an embodiment of the present invention;

[0041] Figure 9 This is an exploded view of a sleeve assembly according to an embodiment of the present invention;

[0042] Figure 10 This is a cross-sectional view of the initial state of the puncture cannula structure according to an embodiment of the present invention;

[0043] Figure 11 This is a schematic diagram of the initial state of the puncture cannula structure according to an embodiment of the present invention;

[0044] Figure 12 This is a structural cross-sectional diagram of a puncture cone according to an embodiment of the present invention;

[0045] Figure 13 This is an exploded view of a puncture cone according to an embodiment of the present invention;

[0046] Figure 14 This is a schematic diagram of the upper shell structure according to an embodiment of the present invention;

[0047] Figure 15 This is a schematic diagram of the structure of an integrated pivot according to an embodiment of the present invention;

[0048] Figure 16 This is a cross-sectional view of the structure of the puncture cone and puncture cannula in one embodiment of the present invention;

[0049] In the attached figures, 1 is a sealing assembly, 2 is a cannula assembly, 3 is a puncture cone, 101 is a sealing cap, 1011 is a positioning rod channel, 1012 is a third slot, 1013 is a conical instrument hole, 1014 is a second slot, 102 is a sealing housing, 1021 is a second locking buckle, 1022 is a button seat, 1023 is a stop part, 103 is an upper sealing plate, 104 is an upper fixing ring, 105 is an elastic sealing ring, 106 is a corrugated ring, 107 is a lower fixing ring, 108 is a locking component, 1081 is a first positioning rod, 1082 is a first buckle, 10821 is a locking body, 10822 is a hook-shaped end, 109 is an O-ring, 110 is an unlocking device, 111 is a silicone retaining ring, 1101 is a T-shaped track, 1102 is an ejector block, 201 is a cannula, 2011 is a... 2012 is the first positioning groove, 2013 is the auxiliary fixed wing, 2014 is the second positioning rod, 2015 is the air intake channel, 202 is the sealing cover, 2021 is the second positioning groove, 2022 is the clearance groove, 203 is the air-blocking sealing cap, 204 is the valve body, 205 is the valve core, 301 is the lower housing, 3011 is the support seat, 3012 is the buckle channel, 3013 is the third positioning rod channel, 3014 is the limiting tube, 302 is the upper housing, 3021 is the support, 3022 is the lower end face, 3023 is the instrument hole, 3024 is the button groove, 303 is the integrated pivot, 3031 is the second button, 3032 is the third buckle, 3033 is the third positioning rod, 3034 is the limiting ring, 304 is the puncture rod, 3041 is the tip, and 3042 is the positioning sleeve. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0051] In this article, "up" and "down" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0052] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0053] In the following description, the end of each component closer to the operator is defined as the proximal end, and the end farther from the operator is defined as the distal end. These proximal and distal designations are for simplicity and clarity only and should not be construed as limiting the scope of the invention.

[0054] like Figure 1-16 As shown, an embodiment of the present invention provides a puncture device, including a sealing assembly 1, a cannula assembly 2, and a puncture cone 3. The puncture cone 3 passes through the sealing assembly 1 and is inserted into the cannula assembly 2. The sealing assembly 1 includes a locking member 108. The inner side wall of the sealing housing 102 of the sealing assembly 1 is provided with a stop portion 1023. The locking member 108 is inserted into the sealing housing 102 until it abuts against the stop portion 1023 of the sealing housing 102, for locking the sealing assembly 1 and the cannula assembly 2.

[0055] Specifically, the locking component 108 is provided with at least one first locking buckle 1082, which includes a buckle body 10821 and a hook-shaped end 10822. The upper end of the sleeve assembly 2 is provided with at least one first slot 2012. When the sealing component 1 is inserted downward into the sleeve assembly 2, the hook-shaped end 10822 of the first locking buckle 1082 is locked in the first slot 2012.

[0056] Here, the first locking buckle 1082 is made of elastic material, and the hook-shaped end 10822 of the first locking buckle 1082 is required to be able to be securely engaged in the first slot 2012.

[0057] Preferably, there are two first locking buckles 1082, which are symmetrically distributed at both ends of the sealing component 1, and there are two corresponding first slots 2012. The through hole direction of the first slot 2012 is parallel to the end face of the sleeve component 2.

[0058] Of course, the first slot 2012 can also be a card hole, as long as it can fix the hook end 10822 of the first locking buckle 1082 in place, which will not be elaborated here.

[0059] Furthermore, the locking component 108 is provided with at least one first positioning rod 1081, and the sleeve assembly 2 is provided with at least one first positioning groove 2011. When the sealing component 1 is inserted downward into the sleeve assembly 2, the first positioning rod 1081 is engaged and fixed with the first positioning groove 2011.

[0060] Specifically, the opening of the first positioning groove 2011 can accommodate the first positioning rod 1081. There are two first positioning rods 1081, which are symmetrically distributed at both ends of the sealing assembly 1. Correspondingly, there are two first positioning grooves 2011, and the opening direction of the first positioning groove 2011 is upward.

[0061] Furthermore, the first locking buckle 1082 and the first positioning rod 1081 are located on the same circumferential end face of the sealing assembly 1, the length of the first locking buckle 1082 is less than the length of the first positioning rod 1081, and the first slot 2012 and the first positioning slot 2011 are located on the same circumferential end face of the sleeve assembly 3.

[0062] In this invention, the length of the first locking buckle 1082 is less than the length of the first positioning rod 1081, which makes it easier to first position the sealing component 1 in the sleeve component 2 through the first locking buckle 1082, and then lock the sealing component 1 in the sleeve component 2. By adopting a fixed locking method, the connection between the sealing component 1 and the sleeve component 2 is more secure.

[0063] In order to increase the tightness of the connection between the sealing assembly 1 and the sleeve assembly 2, in this embodiment of the invention, an air-blocking sealing cap 203 is also provided on the upper end face of the sleeve assembly 2. The sealing assembly 1 inserts the air-blocking sealing cap 203 into the sleeve assembly 2 by squeezing it. The air-blocking sealing cap 203 is compressed under the pressure of the sealing assembly 1 to generate elastic force.

[0064] In order to improve the sealing performance of the sealing assembly 1 and the sleeve assembly 2, this embodiment of the invention adds a gas-blocking sealing cap 203 device to improve the sealing effect.

[0065] Furthermore, the sealing assembly 1 of the puncture device in this embodiment of the invention is provided with at least one unlocking device 110 on its side wall. The unlocking device includes an ejector block 1102. When the unlocking device 110 is subjected to an external force, the ejector block 1102 moves toward the first locking buckle 1082 until it abuts against the locking surface of the first locking buckle 1082 and reaches a predetermined position. The locking body of the first locking buckle 1082 tilts under the pushing force of the ejector block, causing the hook-shaped end of the first locking buckle 1082 to disengage from the first slot 2012. The sealing assembly 1 is ejected upward under the elastic force of the gas-blocking sealing cap 203.

[0066] The sealing assembly in this embodiment of the invention further includes a sealing cover 101.

[0067] The sealing cover 101 is provided with a second slot 1014, and the sealing housing 102 is provided with a corresponding second locking buckle 1021. The sealing cover 101 is pressed down into the sealing housing 102 by the locking component 108, and locked by the second slot 1014 and the second locking buckle 1021 of the sealing housing 102.

[0068] Specifically, the sealing assembly 1 also includes an upper sealing plate 103, an upper fixing ring 104, an elastic sealing ring 105, a corrugated ring 106, a lower fixing ring 107, an O-ring 109, and a silicone retaining ring 111.

[0069] The inner wall of the sealing housing 102 is provided with a stop part 1023, and the locking part 108 is fixed to the inner wall of the sealing housing 102 by an O-ring 109.

[0070] The lower end of the locking component 108 abuts against the stop portion 1023 of the sealing housing 102.

[0071] An elastic sealing ring 105 and a corrugated ring 106 are fixed between the upper fixing ring 104 and the lower fixing ring 107. The outer end face of the corrugated ring 106 is pressed and sealed by the locking component 108 and the upper sealing plate 103. The upper sealing plate 103 is fixed inside the sealing housing 102 by the O-ring 109, and the upper sealing plate 103 and the upper fixing ring 104 are in clearance fit, so that the elastic sealing ring 105 can form a sealing structure inside the sealing housing 102 that can be circumferentially deformed by the corrugated ring 106.

[0072] The sealing cover 101 has a conical instrument hole 1013 and a second slot 1014. The sealing shell 102 has a second locking buckle 1021. The sealing cover 101 is pressed down into the sealing shell 102 and locked with the second locking buckle 1021 of the sealing shell through the second slot 1014. The lower end face of the sealing cover 101 is pressed on the upper sealing plate 103 to fix the upper sealing plate 103.

[0073] Specifically, the sealed housing 102 has symmetrical button seats 1022 on both sides; the unlocking device 110 also includes a T-shaped track 1101, the T-shaped track 1101 of the unlocking device 110 is inserted into the button seat 1022, and the elastic silicone retaining ring 111 of the sealing component 1 is fitted between the T-shaped track 1101 and the ejector block 1102 of the unlocking device 110, so that the button of the unlocking device 110 is limited inside the button seat 1022. At this time, the ejector block 1102 of the unlocking device 110 is exactly pressed against the first locking buckle 1082 on the locking component 108.

[0074] The sleeve assembly 2 in this embodiment of the invention also includes a sealing cap 202, which is sleeved on the gas-blocking sealing cap 203. The side wall of the sealing cap 202 is provided with at least one clearance groove 2022, which is located at the opposite position of the first slot 2012. When the first locking buckle 1082 is tilted, it is used to make way for the first locking buckle 1082.

[0075] At least one second positioning groove 2021 is provided on the lower side wall of the sealing cover 202, and at least one second positioning rod 2014 is provided on the upper end of the sleeve assembly 2. The second positioning groove 2021 of the sealing cover 202 is inserted downward into the second positioning rod 2014.

[0076] Specifically, the sleeve assembly 2 also includes a sleeve 201, a valve body 204, and a valve core 205. The sleeve 201 has a symmetrical first positioning groove 2011, a first retaining groove 2012, an auxiliary fixing wing 2013, a second positioning rod 2014, and an air intake channel 2015. The sealing cover 202 has a second positioning groove 2021 and a clearance groove 2022. The second positioning groove 2021 of the sealing cover 202 is aligned with the second positioning rod 2014 of the sleeve 201 and is ultrasonically welded and fixed. The clearance groove 2022 is arranged at the position of the first retaining groove 2012 to make way for the first locking buckle 1082. The gas-blocking sealing cap 203 has a groove that is installed on the inner ring of the sealing cover 202. The valve body 204 is ultrasonically welded to the sleeve 201, and the valve core 205 cooperates with the valve body 204 to control the gas flow rate.

[0077] Furthermore, the puncture cone 3 includes an upper housing 302, an integrated mechanism 303, a lower housing 301, and a puncture rod 304. The upper housing 302 is connected to the proximal end of the puncture rod 304 through the integrated mechanism 303 and the lower housing 301 in sequence. The integrated mechanism 303 is provided with a third positioning rod 3033, and the surface of the lower housing 301 is provided with a corresponding third positioning rod channel 3013 for limiting the third positioning rod 3033.

[0078] The lower housing 301 is also provided with a support base 3011, a buckle channel 3012, and a limiting tube 3014; the upper housing 302 is provided with a support 3021, a lower end face 3022, and a button groove 3024; the instrument hole 3023 and the integrated mechanism 303 are also provided with a second button 3031, a third locking buckle 3032, and a limiting ring 3034; the puncture rod 304 has a tip 3041 and a positioning sleeve 3042.

[0079] The integrated pivot 303 is symmetrically provided with a third locking buckle 3032, and the sealing cover 101 is correspondingly provided with a third slot 1012. The piercing cone 3 is limited by the third positioning rod 3033 of the integrated pivot 303 and the third positioning rod channel 3013 of the sealing cover 101, and is pressed downward, so that the third locking buckle 3032 of the integrated pivot is locked in the third slot 1012 of the sealing cover.

[0080] The third locking buckle 3032 of the integrated mechanism is made of elastic material. When the puncture cone 3 is removed, the ends of the third locking buckles 3032 on both sides of the integrated mechanism are pressed, and the two third locking buckles 3032 on the integrated mechanism move inward toward each other until they disengage from the third slot 1012 and the puncture cone is removed.

[0081] The sealing assembly 1 is locked in direction by the first positioning rod 1081 on the locker 108 and the first positioning groove 2011 on the sleeve. The sealing assembly 1 is pressed down until the first locking buckle 1082 is engaged in the first groove 2012. At this time, the lower end of the locking component 108 is pressed on the gas-blocking sealing cap 203, and the interference fit seals it, which is the initial state of the puncture sleeve.

[0082] When it is necessary to disassemble the sealing assembly 1, press the unlocking device 110 on both sides of the sealing assembly 1 at the same time. The unlocking device 110 is pushed inward through the T-shaped rail 1101 inside the button seat 1022. The push-out block 1102 pushes against the first buckle 1082 of the locking component 108 until the first buckle 1082 is disengaged from the first slot 2012 on the sleeve 201. At this time, the sealing assembly 1 is subjected to the elastic force of the gas-blocking sealing cap 203 and automatically pops upward, and the sealing assembly 1 is disengaged from the sleeve assembly.

[0083] The integrated pivot 303 is positioned by a positioning rod 3033 passing through the positioning rod channel 3013 of the lower housing. The limiting ring 3034 on the integrated pivot 303 is fitted onto the limiting tube 3014 of the lower housing 301. The positioning sleeve 3042 of the puncture rod 304 is placed on the limiting ring 3034 of the integrated pivot 303. The support column 3021 of the upper housing 302 is aligned with the support column seat 3011 of the lower housing 301 and pressed down until the lower end face 3022 of the upper housing 302 is pressed tightly onto the positioning sleeve 3042 of the puncture rod 304, thus locking the integrated pivot 303 and the puncture rod 304.

[0084] The puncture cone 1 is limited by the third positioning rod 3033 on the integrated mechanism 303 and the positioning rod channel 1011 of the sealing cover 101, and is pressed downward, so that the third buckle 3032 on the integrated mechanism 303 is locked in the third slot 1012 of the sealing cover 101.

[0085] When the puncture cone 3 is removed, press the second button 3031 on both sides of the integrated mechanism 303. The third latch 3032 on the integrated mechanism 303 will move inward until it disengages from the third slot 1012, and the puncture cone 3 can be manually removed.

[0086] This invention, by adding a locking component, allows surgeons to easily separate the five sealing components and the cannula assembly with a single click during surgery. The design is simple, easy to manufacture, and highly flexible in disassembly, greatly enhancing the surgeon's experience.

[0087] The procedure is very convenient and improves surgical efficiency.

[0088] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention.

[0089] Variations, modifications, uses, or adaptations follow the general principles of the invention and include common knowledge or customary techniques in the art that are not disclosed in this invention. The specification and embodiments are for informational purposes only.

[0090] By way of example, the true scope and spirit of the invention are indicated by the following claims.

[0091] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A puncture device, comprising a sealing assembly, a cannula assembly, and a puncture cone, wherein the puncture cone passes through the sealing assembly and is inserted into the cannula assembly, characterized in that, The sealing assembly includes a locking component and an unlocking device. The inner sidewall of the sealing housing of the sealing assembly is provided with a stop portion, which is an annular protrusion structure. The locking component is inserted into the sealing housing until it abuts against the stop portion of the sealing housing. The locking component is provided with at least one first locking buckle, the first locking buckle includes a buckle body and a hook-shaped end, and the sleeve assembly is provided with at least one first slot. When the sealing component is inserted downward into the sleeve assembly, the hook-shaped end of the first locking buckle is locked in the first slot. The locking component is also provided with at least one first positioning rod, and the sleeve assembly is provided with at least one first positioning groove. When the sealing component is inserted into the sleeve assembly, the first positioning rod is engaged and fixed with the first positioning groove. The first locking buckle and the first positioning rod are located on the same circumferential end face of the locking component, the length of the first locking buckle is less than the length of the first positioning rod, and the first slot and the first positioning slot are located on the same circumferential end face of the sleeve assembly. The stop portion limits the insertion depth of the locking component, so that the first locking buckle on the locking component is precisely aligned and engaged with the first slot on the sleeve assembly, thereby locking the sealing component and the sleeve assembly. The unlocking device is used to release the locking of the sealing component and the sleeve assembly.

2. The puncture device as described in claim 1, characterized in that, The upper end face of the sleeve assembly is also provided with a gas-blocking sealing cap. The sealing assembly inserts the gas-blocking sealing cap into the sleeve assembly by squeezing it. The gas-blocking sealing cap is compressed under the pressure of the sealing assembly to generate elastic force.

3. The puncture device as described in claim 2, characterized in that, The unlocking device is disposed on the side wall of the sealing assembly. The unlocking device includes an ejector block. When the unlocking device is subjected to an external force, the ejector block moves toward the first locking buckle until it abuts against the locking surface of the first locking buckle and reaches a predetermined position. The locking body of the first locking buckle tilts under the pushing force of the ejector block, causing the hook-shaped end of the first locking buckle to disengage from the first slot. The sealing assembly pops upward under the elastic force of the gas-blocking sealing cap.

4. The puncture device as described in claim 3, characterized in that, The sealing assembly includes a sealing top cover. The sealing cover is provided with a second slot, and the sealing housing is provided with a corresponding second locking buckle. The sealing cover is pressed downward into the sealing housing by the locking component and locked with the second locking buckle of the sealing housing by the second slot.

5. The puncture device as described in claim 4, characterized in that, The sleeve assembly also includes a sealing cap, which is fitted onto the gas-blocking sealing cap. The side wall of the sealing cap is provided with at least one clearance groove, which is located at the opposite position of the first locking slot. When the first locking buckle is tilted, it is used to make way for the first locking buckle.

6. The puncture device as described in claim 5, characterized in that, At least one second positioning groove is provided on the lower side wall of the sealing cover, and at least one second positioning rod is provided on the upper end of the sleeve assembly. The second positioning groove of the sealing cover is inserted downward into the second positioning rod.

7. The puncture device as described in claim 6, characterized in that, The puncture cone includes an upper shell, an integrated pivot, a lower shell, and a puncture rod. The upper shell is connected to the proximal end of the puncture rod in sequence through the integrated pivot and the lower shell. The integrated pivot is provided with a third positioning rod, and the surface of the lower shell is provided with a corresponding third positioning rod channel for limiting the third positioning rod.

8. The puncture device as described in claim 7, characterized in that, The integrated pivot is symmetrically provided with a third locking buckle, and the sealing cover is correspondingly provided with a third slot. The piercing cone is limited by the third positioning rod of the integrated pivot and the third positioning rod channel of the sealing cover, and is pressed downward, so that the third locking buckle of the integrated pivot is locked in the third slot of the sealing cover.

9. The puncture device as described in claim 8, characterized in that, The third locking buckle of the integrated mechanism is made of elastic material. When the puncture cone is removed, the third locking buckle ends on both sides of the integrated mechanism are pressed, and the third locking buckles on the integrated mechanism move inward toward each other until they disengage from the third slot, and the puncture cone is removed.

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