Sealing assembly of laparoscope puncture outfit and machining method of sealing assembly

Abstract

The embodiment of the invention provides a laparoscope puncture outfit sealing assembly and a machining method thereof. The sealing assembly comprises a sealing matching piece, a first sealing ring and a second sealing ring. A sealing matching hole and a plurality of first through holes are formed in the sealing matching piece, a first fixed matching hole is formed in the first sealing ring, a plurality of first fixing columns are arranged on the second sealing ring, and the first sealing ring and the second sealing ring are arranged on the two sides of the sealing matching piece respectively. Each first fixing column penetrates through the corresponding first through hole to be connected to the corresponding first fixing matching hole, and the first fixing columns are fixedly connected with the first sealing ring. The peripheral edge of the sealing fitting piece of the laparoscope puncture outfit sealing assembly is effectively fixed by the first fixing column, and the problems that in the prior art, the sealing fitting piece is only in interference fit, the product vibrates in the transportation process and expands with heat and contracts with cold, the edge of the sealing fitting piece is prone to loosening and air leakage, the operation process of a clinical patient is affected, and the operation cost is reduced are solved. The postoperative complications of the patient are even caused.

Description

Technical Field

[0001] This application relates to the technical field of laparoscopic puncture, and particularly relates to a sealing assembly of a laparoscopic trocar and a processing method thereof. Background Art

[0002] The sealing assembly of a laparoscopic trocar generally includes a puncture cannula, a sealing assembly, and a puncture rod. The sealing assembly is usually arranged at the top of the puncture cannula. When the puncture rod is inserted into the sealing assembly and the puncture cannula, the sealing assembly can be sleeved on the puncture rod in a sealed manner to close the insertion channel of the puncture rod, prevent foreign objects in the environment, especially infection sources, from entering the patient's body through the puncture cannula, and at the same time prevent the gas in the abdominal cavity from leaking outwards. In related technologies, the sealing assembly includes a housing and a sealing assembly arranged in the housing. The sealing assembly includes a flexible and conical sealing and mating part. The sealing and mating part is used to be sleeved on the puncture rod in a sealed manner when the puncture rod is inserted into the sealing assembly and the puncture cannula. The sealing and mating part is usually installed and fixed in the housing by an interference fit. The vibration during product transportation and the thermal expansion and contraction of the weather can easily cause the sealing assembly to become loose and leak air, affecting the surgical process of clinical patients and even leading to postoperative complications of patients, etc. Summary of the Invention

[0003] In order to solve one of the above technical defects, an embodiment of this application provides a sealing assembly of a laparoscopic trocar and a processing method thereof to solve the problem that the edge of the sealing and mating part is prone to looseness and air leakage in the prior art.

[0004] The present invention adopts the following technical solutions:

[0005] In a first aspect, an embodiment of this application provides a sealing assembly of a laparoscopic trocar, including:

[0006] A sealing and mating part, on which a sealing and mating hole and a plurality of first through holes are arranged. Each of the first through holes is located on the circumference of the sealing and mating hole, and the first through holes are sequentially arranged at intervals along the edge of the sealing and mating part;

[0007] A first sealing ring and a second sealing ring. A first fixed mating hole is arranged on the first sealing ring, and a plurality of first fixing posts are arranged on the second sealing ring. The first sealing ring and the second sealing ring are respectively arranged on two sides of the sealing and mating part along the thickness direction;

[0008] In a state where the first sealing ring, the second sealing ring, and the sealing and mating part are connected, each of the first fixing posts respectively passes through the corresponding first through hole and is connected to the corresponding first fixed mating hole, and the first fixing post and the first sealing ring are fixedly connected.

[0009] Optionally, in a state where the first sealing ring, the second sealing ring and the sealing fitting are connected, the first fixing post protrudes from the first fixing fitting hole, and one end of the first fixing post protruding from the first fixing fitting hole is heat-melted and connected to the first sealing ring.

[0010] Optionally, a plurality of insertion shafts are provided on the first sealing ring;

[0011] In a state where the first sealing ring, the second sealing ring and the sealing fitting are connected, each of the insertion shafts is respectively inserted into a corresponding first through hole.

[0012] Optionally, the sealing fitting has a conical body and a circular ring body provided on the outer edge of the conical body;

[0013] The first through hole is provided on the circular ring body;

[0014] The conical body has the sealing fitting hole;

[0015] The circular ring body is clamped and fixed between the first sealing ring and the second sealing ring.

[0016] Optionally, the laparoscopic trocar sealing assembly includes a protection member, an annular shell and a third sealing ring;

[0017] A second through hole is provided on the protection member;

[0018] The third through hole is provided on the annular shell;

[0019] A second fixing fitting hole is provided on the third sealing ring;

[0020] The second sealing ring, the protection member, the annular shell and the third sealing ring are arranged in sequence. A plurality of second fixing posts are provided on the second sealing ring, and each of the second fixing posts sequentially passes through the second through hole and the third through hole and is connected to the second fixing fitting hole on the third sealing ring.

[0021] Optionally, the second fixing post protrudes from the second fixing fitting hole, and one end of the second fixing post protruding from the second fixing fitting hole is heat-melted and connected to the third sealing ring.

[0022] Optionally, the protection member includes a plurality of monomeric members, and each of the monomeric members has a fixing edge and a protection piece;

[0023] The second through hole is provided on the fixing edge;

[0024] Each of the protection pieces is located on the wide mouth of the conical body;

[0025] Each of the protection pieces cooperates to block the wide mouth of the conical body.

[0026] Optionally, a plurality of inner convex portions are provided on the inner wall of the annular shell, and each of the inner convex portions is provided with the third through hole, and a notch portion is formed between adjacent inner convex portions;

[0027] A plurality of limiting bodies are provided on the third sealing ring, and each of the limiting bodies is respectively embedded in the corresponding notch portion.

[0028] In a second aspect, an embodiment of the present application provides a processing method for the laparoscopic trocar sealing assembly, including:

[0029] Step S1: Assemble the sealing fitting, the first sealing ring and the second sealing ring to form a first assembled body, and support it on the upper surface of the supporting tooling, so that one end of the first fixing column extending out of the first fixing fitting hole faces the movable tooling;

[0030] Step S2: Control the movable tooling to move towards the supporting tooling, squeeze and heat the first fixing column, so that the first fixing column and the first sealing ring are connected by hot melting.

[0031] Optionally, the processing method further includes:

[0032] Step S3: Assemble the protective part, the annular shell and the third sealing ring on the first assembled body to form a second assembled body. The second sealing ring, the protective part, the annular shell and the third sealing ring are arranged in sequence, and the second fixing columns on the second sealing ring sequentially pass through the protective part, the annular shell and the third sealing ring;

[0033] Step S4: Place the second assembled body on the upper surface of the supporting tooling, so that the second fixing column extends towards the movable tooling;

[0034] Step S5: Control the movable tooling to move towards the supporting tooling, so that the movable tooling squeezes and heats the second fixing column, so that the second fixing column and the third sealing ring are connected by hot melting.

[0035] By adopting the above technical solutions, the present application has the following beneficial effects:

[0036] The peripheral side edge of the sealing fitting of the laparoscopic trocar sealing assembly of the present application is effectively fixed by the first fixing column, solving the problems that in the prior art, the sealing fitting only relies on interference fit, and the vibration during product transportation and the thermal expansion and contraction of the weather are likely to cause the edge of the sealing fitting to become loose and leak air, affecting the surgical process of clinical patients, and even causing postoperative complications for patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The illustrative embodiments and descriptions thereof of the present application are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0038] Figure 1 A cross-sectional view showing the mating structure of the laparoscopic trocar sealing assembly, the trocar cannula, and the trocar rod;

[0039] Figure 2 An exploded view showing the mating structure of the laparoscopic trocar sealing assembly, the trocar cannula, and the trocar rod;

[0040] Figure 3 A schematic diagram showing the mating structure of the sealing mating parts, the first sealing ring, and the second sealing ring in the laparoscopic trocar sealing assembly;

[0041] Figure 4 A schematic diagram showing the mating structure of the fixed tooling and the movable tooling;

[0042] Figure 5 Show Figure 4 The enlarged view of part A in;

[0043] Figure 6 A schematic diagram showing the initial machining of the laparoscopic trocar sealing assembly using the fixed tooling and the movable tooling;

[0044] Figure 7 A schematic diagram showing the mating structure of the laparoscopic trocar sealing assembly;

[0045] Figure 8 A schematic diagram showing the continued machining of the laparoscopic trocar sealing assembly using the fixed tooling and the movable tooling;

[0046] Figure 9 A first perspective view showing the laparoscopic trocar sealing assembly;

[0047] Figure 10 A second perspective view showing the laparoscopic trocar sealing assembly.

[0048] In the figure: 100, laparoscopic trocar sealing assembly; 1, sealing mating part; 11, conical body; 111, sealing mating hole; 112, reinforcing rib; 12, circular ring body; 121, first through hole; 2, first sealing ring; 21, first fixed mating hole; 22, insertion shaft; 3, second sealing ring; 31, first fixed column; 32, second fixed column; 4, protection part; 41, fixed edge; 411, second through hole; 42, protection piece; 5, annular shell; 51, third through hole; 52, inner convex part; 6, third sealing ring; 61, second fixed mating hole; 62, limiting body; 7, outer shell; 200, trocar cannula; 300, trocar rod; 400, fixed tooling; 410, groove; 420, avoidance hole; 500, movable tooling. Detailed implementation manners

[0049] In order to make the technical solutions and advantages in the embodiments of the present application clearer and more understandable, the exemplary embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0050] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present application.

[0051] In the present application and its embodiments, unless otherwise clearly defined and limited, terms such as "set", "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0052] In the present application and its embodiments, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0053] Such as Figures 1 to 10As shown in the figure, an embodiment of the present application provides a laparoscopic trocar sealing assembly 100, including: a sealing fitting 1, a first sealing ring 2 and a second sealing ring 3. A sealing fitting hole 111 and a plurality of first through holes 121 are provided on the sealing fitting 1. Each of the first through holes 121 is located on the circumferential side of the sealing fitting hole 111, and each of the first through holes 121 is arranged at intervals in sequence along the edge of the sealing fitting 1. At least one side of the sealing fitting 1 close to the sealing fitting hole 111 is a flexible structure, and the circumferential edge of the sealing fitting 1 can be a rigid structure, and the first through holes 121 can be provided. A first fixed fitting hole 21 is provided on the first sealing ring 2, and a plurality of first fixed columns 31 are provided on the second sealing ring 3. The first sealing ring 2 and the second sealing ring 3 are respectively arranged on both sides of the sealing fitting 1 in the thickness direction. In a state where the first sealing ring 2, the second sealing ring 3 and the sealing fitting 1 are connected, each of the first fixed columns 31 respectively passes through the corresponding first through hole 121 and is connected to the corresponding first fixed fitting hole 21, and the first fixed column 31 is fixedly connected to the first sealing ring 2. The first sealing ring 2 and the second sealing ring 3 can clamp and fix the sealing fitting 1. The sealing fitting 1 is generally funnel-shaped and is installed at the top of the puncture cannula 200. When the puncture rod 300 is inserted into the puncture channels of the sealing assembly 100 and the puncture cannula 200, the puncture rod 300 will pass through the sealing fitting hole 111, and the structure of the sealing fitting 1 at the edge of the sealing fitting hole 111 is tightly sleeved on the puncture rod 300 to close the puncture channel.

[0054] The circumferential edge of the sealing fitting 1 of the laparoscopic trocar sealing assembly 100 of the present application is effectively fixed by the first fixed columns 31. Even after multiple uses, the circumferential side of the sealing fitting 1 will not come off and deform, solving the problems in the prior art that the sealing fitting 1 only relies on interference fit, the vibration during product transportation, and the thermal expansion and contraction of the weather, which easily cause the edge of the sealing fitting 1 to loosen and leak air, affecting the surgical process of clinical patients and even causing postoperative complications for patients.

[0055] In some possible implementation schemes, such as Figure 2 As shown in the figure, in a state where the first sealing ring 2, the second sealing ring 3 and the sealing fitting 1 are connected, the first fixed column 31 extends out of the first fixed fitting hole 21, and one end of the first fixed column 31 extending out of the first fixed fitting hole 21 is heat-melted and connected to the first sealing ring 2, so as to realize the fixed connection between the end of the first fixed column 31 and the first sealing ring 2. The first sealing ring 2 and the second sealing ring 3 cooperate to fix the sealing fitting 1, and the three form an integral structure.

[0056] In some possible implementation schemes, such as Figure 2As shown, a plurality of insertion shafts 22 are provided on the first sealing ring 2. In a state where the first sealing ring 2, the second sealing ring 3 and the sealing fitting 1 are connected, each of the insertion shafts 22 is respectively inserted into a corresponding first through hole 121.

[0057] The insertion shafts 22 are not used to penetrate the second sealing ring 3. The insertion shafts 22 are only used to penetrate into the first through holes 121 on the circumferential side of the sealing fitting 1. The insertion shafts 22 on the first sealing ring 2 and the first fixing posts 31 on the second sealing ring 3 are arranged in a staggered manner. A first fixing fitting hole 21 is arranged between two adjacent insertion shafts 22 on the first sealing ring 2. The insertion shafts 22 and the first fixing posts 31 are mutually staggered and do not interfere with each other. Blind holes can be provided on the second sealing ring 3, and the ends of the insertion shafts 22 can be inserted into the blind holes, thereby improving the structural strength of the insertion shafts 22 and enhancing the limiting effect on the sealing fitting 1.

[0058] In some possible implementation schemes, as Figure 3 shown, the sealing fitting 1 has a conical body 11 and a circular ring body 12 arranged on the outer edge of the conical body 11. The conical body 11 can be a flexible structure. The first through holes 121 are provided on the circular ring body 12. The sealing fitting hole 111 is provided at the center of the conical body 11. A plurality of reinforcing ribs 112 can be provided on the conical body 11. Each of the reinforcing ribs 112 is sequentially arranged at intervals along the circumferential direction of the sealing fitting hole 111. The arrangement of the reinforcing ribs 112 enhances the structural strength of the conical body 11, has a shaping effect, avoids the problem of serious deformation of the conical body 11, and prolongs the service life of the sealing fitting 1. The circular ring body 12 is clamped and fixed between the first sealing ring 2 and the second sealing ring 3.

[0059] In some possible implementation schemes, as Figure 7 shown, the laparoscopic trocar sealing assembly 100 includes a protective member 4, an annular shell 5 and a third sealing ring 6. A second through hole 411 is provided on the protective member 4. The third through hole 51 is provided on the annular shell 5. A second fixing fitting hole 61 is provided on the third sealing ring 6. The second sealing ring 3, the protective member 4, the annular shell 5 and the third sealing ring 6 are arranged in sequence. A plurality of second fixing posts 32 are provided on the second sealing ring 3. Each of the second fixing posts 32 sequentially passes through the second through hole 411 and the third through hole 51 and is connected to the second fixing fitting hole 61 on the third sealing ring 6.

[0060] The sealing fitting 1 is integrally conical, with a sealing fitting hole 111 provided on the inner side and a wide mouth formed on the outer side. The protective member 4 is located on one side of the wide mouth end of the sealing fitting 1, playing a role of shielding and protecting the wide mouth to prevent impurities and dust from entering the puncture cannula 200 through the wide mouth. When the puncture rod 300 penetrates into the sealing assembly 100, the protective member 4 will deform under an external force to avoid the puncture rod 300, so that the puncture rod 300 can smoothly penetrate through the protective member 4.

[0061] On one side of the second sealing ring 3 away from each first fixing post 31, a second fixing post 32 is provided. The second fixing post 32 sequentially passes through the second through hole 411 on the protection member 4 and the third through hole 51 on the annular shell 5 and is connected to the second fixed mating hole 61 on the third sealing ring 6, so that the first sealing ring 2, the sealing fitting member 1, the second sealing ring 3, the protection member 4, the annular shell 5, and the third sealing ring 6 are stacked in sequence and assembled and fixed into an integral structure, which facilitates unified assembly on the outer shell 7.

[0062] In some possible implementation schemes, in combination with Figure 7 and Figure 9 As shown, the second fixing post 32 extends out of the second fixed mating hole 61, and one end of the second fixing post 32 extending out of the second fixed mating hole 61 is heat-melted and connected to the third sealing ring 6. Thus, the connection between the second sealing ring 3 and the third sealing ring 6 is realized, and the two cooperate to clamp and fix the protection member 4 and the annular shell 5.

[0063] In some possible implementation schemes, the protection member 4 includes a plurality of monomeric members. Each monomeric member has a fixed edge 41 and a protection piece 42. The second through hole 411 is provided on the fixed edge 41. Each protection piece 42 is located on the wide mouth of the conical body 11, and each protection piece 42 cooperates to block the wide mouth of the conical body 11. The edges of each protection piece 42 are attached to each other along the thickness direction of the protection piece 42, and there is no connection relationship between different protection pieces 42. When the puncture rod 300 penetrates, under the action of an external force, each protection piece 42 undergoes elastic deformation, and the puncture rod 300 can smoothly pass through each protection piece 42. The protection piece 42 is a flexible sheet body, and the fixed edge 41 can be a rigid structure.

[0064] In some possible implementation schemes, as Figure 7 shown, a plurality of inner convex portions 52 are provided on the inner wall of the annular shell 5. Each inner convex portion 52 is provided with the third through hole 51. A notch portion is formed between adjacent inner convex portions 52. A plurality of limiting bodies 62 are provided on the third sealing ring 6. Each limiting body 62 is respectively embedded in the corresponding notch portion. Thus, the third sealing ring 6 and the annular shell 5 are in limiting cooperation, and the third sealing ring 6 and the annular shell 5 cannot rotate relative to each other.

[0065] In some possible embodiments, the laparoscopic trocar sealing assembly 100 further includes a housing 7. The housing 7 has a plug-in mating groove. The sealing fitting 1, the first sealing ring 2, and the second sealing ring 3 are all disposed in the housing 7. The housing 7 has a snap-fitting portion. The sealing mating hole 111 is located in the plug-in mating groove. When the puncture rod 300 penetrates through the plug-in mating groove, it will naturally penetrate through the sealing mating hole 111, and thus be sealed by the sealing fitting 1. When the puncture rod 300 penetrates through the plug-in mating groove, it can be further inserted into the trocar 200. The snap-fitting portion on the housing 7 may include a claw, and a slot may be provided on the trocar 200. The claw is detachably snap-fitted into the slot to achieve the assembly of the sealing assembly 100 and the trocar 200.

[0066] The embodiment of the present application also provides a processing method for the above-mentioned laparoscopic trocar sealing assembly 100, including:

[0067] Step S1: As shown in Figure 3 and Figure 6 assemble the sealing fitting 1, the first sealing ring 2, and the second sealing ring 3 to form a first assembly, and support it on the upper surface of the support tooling, so that one end of the first fixing column 31 extending out of the first fixing fitting hole 21 faces the movable tooling 500;

[0068] Step S2: Control the movable tooling 500 to move towards the support tooling, squeeze and heat the first fixing column 31, so that the first fixing column 31 and the first sealing ring 2 are heat-melted and connected.

[0069] The movable tooling 500 is located on the top of the fixed tooling 400. A heating component is provided on the movable tooling 500, which can heat the end of the first fixing column 31, so that the end of the first fixing column 31 is heat-melted and fixedly connected to the side of the first sealing ring 2 facing away from the second sealing ring 3.

[0070] Combined with Figure 4 and Figure 5 shown, a plurality of grooves 410 can be provided on the support tooling, which can conveniently accommodate partial structural parts (the first assembly) of a sealing assembly 100 respectively. For example, a plurality of avoidance holes 420 can be provided on the bottom wall edge of the groove 410. When the second sealing ring 3 is placed in the groove 410, the second fixing columns 32 on the second sealing ring 3 are respectively inserted into the corresponding avoidance holes 420, so as to protect the second fixing columns 32 and also play a role in limiting the first assembly.

[0071] The processing method may further include:

[0072] Step S3: As shown in Figure 7As shown, the protective member 4, the annular shell 5, and the third sealing ring 6 are assembled to the first assembly to form the second assembly. The second sealing ring 3, the protective member 4, the annular shell 5, and the third sealing ring 6 are arranged in sequence. The second fixing posts 32 on the second sealing ring 3 sequentially pass through the protective member 4, the annular shell 5, and the third sealing ring 6;

[0073] Step S4: As Figure 8 shown, place the second assembly on the upper surface of the support tooling such that the second fixing posts 32 extend towards the movable tooling 500;

[0074] Compared with step S1, in step S4, after the sealing assembly is flipped 180 degrees and placed on the upper surface of the support tooling, the ends of the first fixing posts 31 can be respectively received in the corresponding avoidance holes 420, and the cantilever ends of the second fixing posts 32 face the movable tooling 500. A pressing cylinder is connected to the movable tooling 500, and the pressing cylinder can drive the movable tooling 500 to move up and down.

[0075] Step S5: Control the movable tooling 500 to move towards the support tooling such that the movable tooling 500 presses and heats the second fixing posts 32, causing the second fixing posts 32 and the third sealing ring 6 to be heat-melted and connected.

[0076] The movable tooling 500 is located on top of the fixed tooling 400. A heating component is provided on the movable tooling 500, which can heat the ends of the second fixing posts 32, causing the ends of the second fixing posts to be heat-melted and heat-fixed to the side of the third sealing ring 6 facing away from the second sealing ring 3, thereby completing the assembly of at least part of the structure of the laparoscopic trocar sealing assembly 100.

[0077] The foregoing disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0078] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments as well as all changes and modifications falling within the scope of the present application.

[0079] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

1. A laparoscopic puncture device sealing assembly, characterized in that: include: A sealing fitting, wherein the sealing fitting is provided with a sealing fitting hole and a plurality of first through holes, each of the first through holes is located at a peripheral side of the sealing fitting hole, and each of the first through holes is sequentially spaced along an edge of the sealing fitting; A first sealing ring and a second sealing ring, wherein the first sealing ring is provided with a first fixing matching hole, and the second sealing ring is provided with a plurality of first fixing columns, and the first sealing ring and the second sealing ring are respectively provided on both sides of the sealing matching member along the thickness direction; When the first sealing ring, the second sealing ring and the sealing fitting are connected, each of the first fixing columns passes through the corresponding first through hole and is connected to the corresponding first fixing fitting hole, and the first fixing column and the first sealing ring are fixedly connected.

2. The laparoscopic trocar sealing assembly according to claim 1, characterized in that: When the first sealing ring, the second sealing ring and the sealing fitting are connected, the first fixing column extends out of the first fixing fitting hole, and one end of the first fixing column extending out of the first fixing fitting hole is thermally melt-connected to the first sealing ring.

3. The laparoscopic trocar sealing assembly according to claim 1, characterized in that: A plurality of plug-in shafts are arranged on the first sealing ring; When the first sealing ring, the second sealing ring and the sealing fitting are connected, each of the insertion shafts is inserted into the corresponding first through hole.

4. The laparoscopic trocar sealing assembly according to claim 1, characterized in that: The sealing fitting comprises a conical body and a circular ring body arranged on the outer edge of the conical body; The first through hole is arranged on the annular body; The conical body has the sealing fitting hole; The annular body is clamped and fixed between the first sealing ring and the second sealing ring.

5. The laparoscopic trocar sealing assembly according to claim 1, characterized in that: It includes a protective member, an annular shell and a third sealing ring; The protective member is provided with a second through hole; The third through hole is arranged on the annular shell; The third sealing ring is provided with a second fixing matching hole; The second sealing ring, protective member, annular shell and third sealing ring are arranged in sequence, and a plurality of second fixing columns are arranged on the second sealing ring, and each of the second fixing columns passes through the second through hole and the third through hole in sequence and is connected to the second fixing matching hole on the third sealing ring.

6. The laparoscopic trocar sealing assembly according to claim 5, characterized in that: The second fixing column extends out of the second fixing matching hole, and one end of the second fixing column extending out of the second fixing matching hole is hot-melt connected to the third sealing ring.

7. The laparoscopic trocar sealing assembly according to claim 5, characterized in that: The protective member comprises a plurality of single members, each of which has a fixed edge and a protective sheet; The second through hole is arranged on the fixed edge; Each of the protective sheets is located on the wide mouth of the cone; Each of the protection sheets cooperates to block the wide opening of the cone.

8. The laparoscopic trocar sealing assembly according to claim 5, characterized in that: A plurality of inner convex parts are arranged on the inner wall of the annular shell, each of the inner convex parts is provided with the third through hole, and a notch part is formed between adjacent inner convex parts; A plurality of limiting bodies are arranged on the third sealing ring, and each of the limiting bodies is respectively embedded in a corresponding notch portion.

9. The method for processing the sealing assembly of a laparoscopic puncture device according to any one of claims 1 to 8, characterized in that: include: Step S1, assembling the sealing fitting, the first sealing ring and the second sealing ring to form a first assembly, and supporting the assembly on the upper surface of the supporting tool, so that one end of the first fixing column extending out of the first fixing fitting hole faces the movable tool; Step S2, controlling the movable tooling to move toward the supporting tooling, and squeezing and heating the first fixing column, so that the first fixing column and the first sealing ring are connected by thermal melting.

10. The processing method according to claim 9, characterized in that: include: Step S3, assembling the protective member, the annular shell and the third sealing ring into the first assembly to form a second assembly, wherein the second sealing ring, the protective member, the annular shell and the third sealing ring are arranged in sequence, and the second fixing column on the second sealing ring passes through the protective member, the annular shell and the third sealing ring in sequence; Step S4, placing the second assembly on the upper surface of the supporting tooling, so that the second fixing column extends toward the movable tooling; Step S5, controlling the movable tooling to move toward the supporting tooling, so that the movable tooling squeezes and heats the second fixing column, so that the second fixing column and the third sealing ring are connected by thermal melting.

Images