Puncture outfit

Abstract

The invention provides a puncture outfit. The puncture outfit comprises a sealing body, an incision protection sleeve and a channel assembly. At least three through holes penetrating through the sealing body are formed in the sealing body; the incision protection sleeve is used for being connected with one end of the sealing body, a cavity is defined by the incision protection sleeve, and the cavity communicates with the through hole; one end of the channel assembly penetrates through the through hole and enters the cavity, the interior of the channel assembly is hollow to form a sealing channel penetrating through the channel assembly, and the part, located outside the through hole and the cavity, of the channel assembly is provided with an air inlet channel and an exhaust channel. According to the puncture outfit provided by the invention, a plurality of through holes are formed, so that a plurality of surgical instruments are allowed to enter the puncture outfit through the channels on the puncture outfit, and when the puncture outfit provided by the invention is used for an operation, surgical wounds can be reduced, the postoperative recovery speed is increased, and the surgical aesthetic property is improved.

Description

Technical Field

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

[0002] The trocar is a commonly used surgical instrument in surgery. It is a key medical device widely used in minimally invasive surgeries such as laparoscopy, thoracoscopy, and hysteroscopy. Its main function is to create a safe channel in the body cavity wall, such as the abdominal wall or chest wall, so that surgical instruments such as laparoscope lenses, grasping forceps, and electrocoagulation hooks can enter the body cavity while maintaining the closed environment of the body cavity.

[0003] However, the existing trocar only has one channel, allowing only one surgical instrument to pass through, and needs to be improved. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a puncture device that can create multiple channels in a wound that allow surgical instruments to pass through.

[0005] For the purposes described above, this application provides a puncture device, comprising:

[0006] A sealing body, wherein the sealing body has through holes penetrating the sealing body, and the through holes are at least three in number;

[0007] A cut-out protective sleeve is used to connect to one end of the sealing body, the cut-out protective sleeve forms a cavity, and the cavity communicates with the through hole;

[0008] A channel assembly, one end of which passes through the through hole and enters the cavity, the interior of which is hollow to form a sealed channel that penetrates the channel assembly, the portion of the channel assembly located outside the through hole and the cavity having an air intake channel and an exhaust channel, the two ends of which are respectively connected to the sealed channel and the external environment, the two ends of which are respectively connected to the sealed channel and the external environment, and an air intake valve and an exhaust valve are respectively provided in the air intake channel and the exhaust channel.

[0009] In one or more embodiments, the through hole includes a first through hole and a second through hole, wherein the inner diameter of the first through hole is larger than the inner diameter of the second through hole;

[0010] The channel assembly includes a first channel assembly and a second channel assembly. One end of the first channel assembly passes through the first through hole and enters the cavity, and one end of the second channel assembly passes through the second through hole and enters the cavity.

[0011] Both the first channel assembly and the second channel assembly are hollow inside and respectively form a first sealing channel and a second sealing channel penetrating the first channel assembly and the second channel assembly;

[0012] The portion of the first channel assembly located outside the first through hole and the cavity is provided with a first air intake channel and an exhaust channel, and a first air intake valve and an exhaust valve are respectively provided in the first air intake channel and the exhaust channel.

[0013] The portion of the second channel assembly located outside the second through hole and the cavity is provided with a second air intake channel, and a second air intake valve is provided inside the second air intake channel.

[0014] In one or more embodiments, there are two first through holes and two second through holes; the two second through holes are located between the two first through holes.

[0015] In one or more embodiments, the first channel assembly includes a first sleeve and a first sleeve head, one end of the first sleeve head is connected to the first sleeve, and the other end is provided with a sealing cap to seal the first sleeve head; the first sleeve and the first sleeve head form the first sealing channel; the first sleeve head is provided with the first air intake channel and the exhaust channel.

[0016] In one or more embodiments, the first air intake channel and the exhaust channel are respectively disposed on opposite sides of the first sleeve head, and the first air intake channel and the exhaust channel are at the same height in the vertical direction; the first sleeve head is provided with an air-blocking valve, and the air-blocking valve is located between the first air intake channel and the exhaust channel in the vertical direction.

[0017] In one or more embodiments, the first intake valve includes a valve body and a valve stem. The valve body is connected to one end of the first intake channel. The valve body is provided with a valve port that communicates with the external environment. The valve stem is disposed above the valve body in the vertical direction and is used to control the opening and closing of the valve body.

[0018] In one or more embodiments, the second channel assembly includes a second sleeve and a second sleeve head, one end of the second sleeve head being connected to the second sleeve; the second sleeve and the second sleeve head forming a second sealing channel; and the second sleeve head being provided with a second air intake channel.

[0019] In one or more embodiments, a core rod assembly is further included, the core rod assembly being configured to cooperate with the channel assembly to pass one end of the channel assembly through the through hole.

[0020] In one or more embodiments, the core rod assembly includes a top cover and a core rod; the top cover is disposed at one end of the core rod, and the opposite end passes through the sealing channel to guide one end of the channel assembly through the through hole into the cavity, thereby completing the assembly of the puncture device.

[0021] In one or more embodiments, a retaining ring is provided on the outer side wall of one end of the cut protective sleeve, and a retaining groove is provided on the inner side wall of the sealing body. The retaining groove cooperates with the retaining ring to seal the cut protective sleeve and the sealing body.

[0022] The trocar provided in this application has multiple through holes, which allows multiple surgical instruments to enter through the channels on the trocar. Therefore, using the trocar provided in this application for surgery can reduce surgical wounds, improve postoperative recovery speed and surgical aesthetics. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the puncture device structure according to an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the sealing body of an embodiment of this application from one perspective;

[0026] Figure 3 This is a schematic diagram of the sealing body of an embodiment of this application from another perspective;

[0027] Figure 4 for Figure 3 A schematic diagram of the sealing body in another embodiment;

[0028] Figure 5 This is a schematic diagram of the structure of the cut-out protective sleeve according to an embodiment of this application;

[0029] Figure 6 This is a schematic diagram of the structure of the first channel component according to an embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the structure of the second channel component according to an embodiment of this application;

[0031] Figure 8 This is a schematic diagram of the core rod assembly according to an embodiment of this application;

[0032] Figure 9 This is a flowchart illustrating the method of using a puncture device according to an embodiment of this application.

[0033] Explanation of key figure labels:

[0034] 100. Puncture instrument;

[0035] 10. Sealing body; 11. Through hole; 111. First through hole; 112. Second through hole; 113. Upper through hole; 114. Lower through hole; 115. Channel; 12. Upper sealing body; 13. Lower sealing body; 14. Slot;

[0036] 20. Cutting edge protective sleeve; 21. Retaining ring;

[0037] 30. Channel assembly; 301. Intake channel; 301a. First intake channel; 301b. Second intake channel; 302. Exhaust channel; 31. First channel assembly; 311. First sleeve; 312. First sleeve head; 313. Sealing cap; 314. Air choke valve; 32. Second channel assembly; 321. Second sleeve; 322. Second sleeve head; 33. Intake valve; 331. First intake valve; 3311. Valve body; 3312. Valve stem; 3313. Valve port; 332. Second intake valve; 34. Exhaust valve;

[0038] 40. Core rod assembly; 41. Top cover; 42. Core rod. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0040] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] Please refer to Figures 1 to 8As shown, in some embodiments, this application provides a puncture device 100, including: a sealing body 10, an incision protective sleeve 20, and a channel assembly 30.

[0042] The sealing body 10 is provided with a through hole 11 that penetrates the sealing body 10, and there are at least three through holes 11.

[0043] The cut-out protective sleeve 20 is used to connect to one end of the sealing body 10. The cut-out protective sleeve 20 forms a cavity, which is connected to the through hole 11.

[0044] One end of the channel assembly 30 passes through the through hole 11 and enters the cavity. The interior of the channel assembly 30 is hollow to form a sealed channel that runs through the channel assembly 30. The portion of the channel assembly 30 located outside the through hole 11 and the cavity is provided with an intake channel 301 and an exhaust channel 302. The two ends of the intake channel 301 are connected to the sealed channel and the external environment, respectively, and the two ends of the exhaust channel are also connected to the sealed channel and the external environment, respectively. An intake valve 33 and an exhaust valve 34 are respectively provided in the intake channel 301 and the exhaust channel 302.

[0045] The puncture device 100 provided in this application forms at least three channels for surgical instruments to pass through by providing at least three through holes 11 on the sealing body 10, thereby eliminating the need to make multiple incisions during surgery, reducing surgical trauma, and improving postoperative recovery speed.

[0046] In the trocar 100 provided in this application, the air inlet channel 301 is used to introduce gases such as carbon dioxide into the patient's abdominal cavity to establish a surgical operating space, and the exhaust channel 302 is used to discharge waste gas, fluid, etc. generated during the operation from the exhaust channel 302.

[0047] The puncture device 100 provided in this application has an air intake channel 301 and an exhaust channel 302 provided on the channel assembly 30.

[0048] The puncture device 100 provided in this application integrates the air inlet channel 301 and the air outlet channel 302 with the sealing channel by setting an air inlet channel 301 and an air outlet channel 302 on the channel assembly 30. This avoids the need to set an independent air passage on the sealing body 10, making the overall structure simpler. At the same time, the air inlet channel 301 and the air outlet channel 302 are set on the channel assembly 30, so the path of gas from the external gas source through the channel assembly 30 to the patient's body cavity is shorter, thereby reducing lag and enabling the rapid establishment of a stable pneumoperitoneum pressure in the patient's body cavity. Moreover, it can respond instantly to changes in the pressure in the body cavity when venting, so as to quickly expel excess gas or fluid.

[0049] Optionally, in one embodiment of the puncture device 100 provided in this application, a retaining ring 21 is provided on the outer side wall of one end of the incision protective sleeve 20, and a retaining groove 14 is provided on the inner side wall of the sealing body 10. The retaining groove 14 and the retaining ring 21 cooperate to seal the incision protective sleeve 20 and the sealing body 10.

[0050] The puncture device 100 provided in this application has a retaining ring 21 on the outer side wall of one end of the incision protective sleeve 20 and a retaining groove 14 on the inner side wall of the sealing body 10. The retaining groove 14 and the retaining ring 21 cooperate to seal the incision protective sleeve 20 and the sealing body 10, making it easier to disassemble and install the incision protective sleeve 20 and the sealing body 10.

[0051] Optionally, in one embodiment of the puncture device 100 provided in this application, the through hole 11 includes a first through hole 111 and a second through hole 112. The inner diameter of the first through hole 111 is larger than the inner diameter of the second through hole 112.

[0052] Correspondingly, the channel assembly 30 includes a first channel assembly 31 and a second channel assembly 32. One end of the first channel assembly 31 passes through the first through hole 111 and enters the cavity, and one end of the second channel assembly 32 passes through the second through hole 112 and enters the cavity.

[0053] Both the first channel assembly 31 and the second channel assembly 32 are hollow inside and form a first sealing channel and a second sealing channel that pass through the first channel assembly 31 and the second channel assembly 32, respectively.

[0054] The portion of the first channel assembly 31 located outside the first through hole 111 and the cavity is provided with a first air intake channel 301a and an exhaust channel 302. The first air intake channel 301a and the exhaust channel 302 are respectively provided with a first air intake valve 331 and an exhaust valve 34.

[0055] The second channel assembly 32 is provided with a second air intake channel 301b in the portion outside the second through hole 112 and cavity, and a second air intake valve 332 is provided in the second air intake channel 301b.

[0056] The puncture device 100 provided in this application is equipped with two different inner diameters: a first through hole 111 and a second through hole 112. The inner diameter of the first through hole 111 is larger than that of the second through hole 112. Correspondingly, a first channel assembly 31 and a second channel assembly 32 are provided to cooperate with the first through hole 111 and the second through hole 112, thereby accommodating surgical instruments of different sizes and improving the quality of surgery.

[0057] Optionally, in one embodiment of the puncture device 100 provided in this application, two first through holes 111 and two second through holes 112 are provided.

[0058] The trocar 100 provided in this application, by providing two first through holes 111 and two second through holes 112, allows various surgical instruments to enter the patient's abdominal cavity for surgery. For example, one of the second through holes 112 can be used as an observation port for the passage of a laparoscopy, one of the first through holes 111 can be used as a main operating port for adapting to larger diameter surgical instruments such as staplers, another first through hole 111 can be used as an auxiliary operating port for adapting to medium diameter surgical instruments such as traction forceps, and another second through hole 112 can be used as an auxiliary functional port for adapting to smaller diameter surgical instruments such as suction devices, thereby meeting the needs of complex surgeries.

[0059] Preferably, in this embodiment, the two second through holes 112 are located between the two first through holes 111. This arrangement can prevent surgical instruments from interfering with each other when passing through the first through holes 111 and the second through holes 112.

[0060] Optionally, in one embodiment of the puncture device 100 provided in this application, there are two first through holes 111 and one second through hole 112.

[0061] Optionally, in another embodiment of the puncture device 100 provided in this application, there are two first through holes 111 and three second through holes 112. This application does not limit this.

[0062] Optionally, in one embodiment of the puncture device 100 provided in this application, the sealing body 10 in the vertical direction includes an upper sealing body 12 and a lower sealing body 13. A through hole 11 penetrates the upper sealing body 12. A transition cavity is provided within the lower sealing body 13, and the upper and lower ends of the lower sealing body 13 are respectively connected to the upper sealing body 12 and the incision protective sleeve 20 to connect the through hole 11, the transition cavity, and the cavity. A groove portion 14 is provided on the inner sidewall of the lower sealing body 13 to cooperate with the retaining ring portion 21 on the incision protective sleeve 20.

[0063] Optionally, in one embodiment of the puncture device 100 provided in this application, the through hole 11 includes an upper through hole 113, a lower through hole 114, and a channel 115. The upper through hole 113 is disposed at the upper end of the upper sealing body 12, and the lower through hole 114 is disposed at the lower end of the upper sealing body 12. The upper sealing body 12 is provided with a channel 115, which is located between the upper through hole 113 and the lower through hole 114 and connects the upper through hole 113 and the lower through hole 114. The inner diameter of the upper through hole 113 is larger than the inner diameter of the lower through hole 114.

[0064] The puncture device 100 provided in this application, by setting an upper through hole 113 and a lower through hole 114, and the inner diameter of the upper through hole 113 being larger than the inner diameter of the lower through hole 114, can improve the sealing performance of the upper sealing body 12, and ultimately improve the overall sealing performance of the puncture device 100.

[0065] Optionally, both the first through hole 111 and the second through hole 112 can be configured as the upper through hole 113, the lower through hole 114 and the channel 115 in the embodiment of the puncture device 100 provided in this application, or any one of the through holes 11 can be configured. This application does not limit this.

[0066] Optionally, in one embodiment of the puncture device 100 provided in this application, the first channel assembly 31 includes a first sleeve 311 and a first sleeve head 312. One end of the first sleeve head 312 is connected to the first sleeve 311, and the opposite end is provided with a sealing cap 313 to seal the first sleeve head 312. A first sealing channel is formed within the first sleeve 311 and the first sleeve head 312. The first sleeve head 312 is provided with a first air inlet channel 301a and an exhaust channel 302.

[0067] The puncture device 100 provided in this application, by setting a first channel component 31, enables the first channel component 31 to be adapted to the first through hole 111, and the overall structure of the first channel component 31 is simple and easy to manufacture.

[0068] In one embodiment of the puncture device 100 provided in this application, a first air inlet channel 301a and an exhaust channel 302 are respectively disposed on opposite sides of a first sleeve head 312, and the first air inlet channel 301a and the exhaust channel 302 are at the same height in the vertical direction. An air-blocking valve 314 is provided inside the first sleeve head 312, and the air-blocking valve 314 is located between the first air inlet channel 301a and the exhaust channel 302 in the vertical direction.

[0069] The puncture device 100 provided in this application improves the sealing performance of the first channel assembly 31 by providing an air-blocking valve 314 inside the first sleeve head 312, setting the first air inlet channel 301a and the exhaust channel 302 at the same height, and positioning the air-blocking valve 314 between the first air inlet channel 301a and the exhaust channel 302.

[0070] Optionally, in one embodiment of the puncture device 100 provided in this application, the first air inlet valve 331 includes a valve body 3311 and a valve stem 3312. The valve body 3311 is connected to one end of the first air inlet channel 301a. The valve body 3311 is provided with a valve port 3313 that communicates with the external environment. The valve port 3313 is used to connect with a gas source such as carbon dioxide, so that carbon dioxide can pass through the valve port 3313, sequentially through the valve body 3311 and the first air inlet channel 301a, and thus enter the patient's cavity. In the vertical direction, the valve stem 3312 is disposed above the valve body 3311 and is used to control the opening and closing of the valve body 3311.

[0071] The puncture device 100 provided in this application, by setting a valve body 3311, a valve stem 3312 and a valve port 3313, enables the opening and closing of the first air intake valve 331, thereby improving the sealing performance of the first channel assembly 31.

[0072] Optionally, in one embodiment of the puncture device 100 provided in this application, similarly, the second channel assembly 32 includes a second sleeve 321 and a second sleeve head 322. One end of the second sleeve head 322 is connected to the second sleeve 321. A second sealing channel is formed within the second sleeve 321 and the second sleeve head 322. The second sleeve head 322 is provided with a second air inlet channel 301b.

[0073] Optionally, in one embodiment of the puncture device 100 provided in this application, the puncture device 100 further includes a core rod assembly 40. The core rod assembly 40 is used to cooperate with the channel assembly 30 to pass one end of the channel assembly 30 through the through hole 11.

[0074] Since the channel assembly 30 is generally made of soft material in order to reduce harm to the patient, the puncture device 100 provided in this application is equipped with a core rod assembly 40, which can assist the channel assembly 30 in assembling with the sealing body 10, thereby reducing the difficulty of operation and making the puncture device 100 provided in this application more convenient to use.

[0075] Optionally, in one embodiment of the puncture device 100 provided in this application, the core rod assembly 40 includes a top cover 41 and a core rod 42. The top cover 41 is disposed at one end of the core rod 42, and the opposite end passes through a sealing channel to guide one end of the channel assembly 30 through the through hole 11 into the cavity, thereby completing the assembly of the puncture device 100.

[0076] The puncture device 100 provided in this application, by setting the upper cover 41 and the core rod 42, makes it easier for the core rod assembly 40 to install the channel assembly 30 onto the sealing body 10, reducing the difficulty of operation.

[0077] Optionally, in one embodiment of the puncture device 100 provided in this application, the puncture device 100 includes an assembled state and a disassembled state.

[0078] When the puncture device 100 is in the disassembled state, the sealing body 10, the incision protective sleeve 20, the channel assembly 30 and the core rod assembly 40 can be separately divided into small bags for independent aseptic packaging and can be contained in a large aseptic bag. This application does not limit this.

[0079] When the trocar 100 is in the assembled state, i.e., when the trocar 100 is used in surgery, please refer to... Figure 9 As shown, this application also provides a method of using the puncture device 100, applied to the aforementioned puncture device 100, including:

[0080] S10. Remove the packaging from the puncture instrument 100;

[0081] S20. Insert the incision protective sleeve 20 into the patient's cavity according to the laparoscopic surgery procedure, and adjust the height of the incision protective sleeve 20.

[0082] S30, Install the sealing body 10 and the cut protective sleeve 20;

[0083] S40. Install the channel assembly 30 onto the sealing body 10 via the core rod assembly 40, and pull out the core rod assembly 40.

[0084] S50. Connect the air source to the air inlet channel 301 and open the air inlet valve 33, close the exhaust valve 34, and establish a pneumoperitoneum in the patient's cavity.

[0085] S60. Insert the necessary surgical instruments into the patient's cavity through the sealed channel and perform the surgery;

[0086] S70. After the surgical procedure is completed, remove the sealing body 10 and take out the excised tissue through the incision protective sleeve 20.

[0087] S80. Repeat steps S30 to S50 to re-establish pneumoperitoneum, perform an examination, and suture to end the surgery.

[0088] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the above embodiments of this application, which are not provided in detail for the sake of brevity.

[0089] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A puncture device, characterized in that, include: A sealing body, wherein the sealing body has through holes penetrating the sealing body, and the through holes are at least three in number; A cut-out protective sleeve is used to connect to one end of the sealing body, the cut-out protective sleeve forms a cavity, and the cavity communicates with the through hole; A channel assembly, one end of which passes through the through hole and enters the cavity, the interior of which is hollow to form a sealed channel that penetrates the channel assembly, the portion of the channel assembly located outside the through hole and the cavity having an air intake channel and an exhaust channel, the two ends of which are respectively connected to the sealed channel and the external environment, the two ends of which are respectively connected to the sealed channel and the external environment, and an air intake valve and an exhaust valve are respectively provided in the air intake channel and the exhaust channel.

2. The puncture device according to claim 1, characterized in that, The through hole includes a first through hole and a second through hole, wherein the inner diameter of the first through hole is larger than the inner diameter of the second through hole; The channel assembly includes a first channel assembly and a second channel assembly. One end of the first channel assembly passes through the first through hole and enters the cavity, and one end of the second channel assembly passes through the second through hole and enters the cavity. Both the first channel assembly and the second channel assembly are hollow inside and respectively form a first sealing channel and a second sealing channel penetrating the first channel assembly and the second channel assembly; The portion of the first channel assembly located outside the first through hole and the cavity is provided with a first air intake channel and an exhaust channel, and a first air intake valve and an exhaust valve are respectively provided in the first air intake channel and the exhaust channel. The portion of the second channel assembly located outside the second through hole and the cavity is provided with a second air intake channel, and a second air intake valve is provided inside the second air intake channel.

3. The puncture device according to claim 2, characterized in that, There are two first through holes and two second through holes; the two second through holes are located between the two first through holes.

4. The puncture device according to claim 2, characterized in that, The first channel assembly includes a first sleeve and a first sleeve head. One end of the first sleeve head is connected to the first sleeve, and the other end is provided with a sealing cap to seal the first sleeve head. The first sleeve and the first sleeve head form the first sealing channel. The first sleeve head is provided with the first air intake channel and the exhaust channel.

5. The puncture device according to claim 4, characterized in that, The first intake channel and the exhaust channel are respectively located on opposite sides of the first sleeve head, and the first intake channel and the exhaust channel are at the same height in the vertical direction; the first sleeve head is provided with an air-blocking valve, and the air-blocking valve is located between the first intake channel and the exhaust channel in the vertical direction.

6. The puncture device according to claim 4, characterized in that, The first intake valve includes a valve body and a valve stem. The valve body is connected to one end of the first intake channel. The valve body is provided with a valve port that communicates with the external environment. In the vertical direction, the valve stem is located above the valve body and is used to control the opening and closing of the valve body.

7. The puncture device according to claim 2, characterized in that, The second channel assembly includes a second sleeve and a second sleeve head, one end of the second sleeve head being connected to the second sleeve; the second sleeve and the second sleeve head together form a second sealing channel; the second sleeve head is provided with a second air intake channel.

8. The puncture device according to claim 1, characterized in that, It also includes a core rod assembly for engaging the channel assembly to pass one end of the channel assembly through the through hole.

9. The puncture device according to claim 7, characterized in that, The core rod assembly includes a top cover and a core rod; the top cover is disposed at one end of the core rod, and the opposite end passes through the sealing channel to guide one end of the channel assembly through the through hole into the cavity, thereby completing the assembly of the puncture device.

10. The puncture device according to any one of claims 1-9, characterized in that, The outer side wall of one end of the cut protective sleeve is provided with a retaining ring, and the inner side wall of the sealing body is provided with a retaining groove. The retaining groove and the retaining ring cooperate to seal the cut protective sleeve and the sealing body.

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