Sealing valve assembly and puncture outfit

Abstract

The utility model relates to the technical field of puncture outfit, and provides a sealing valve assembly and a puncture outfit, the sealing valve assembly comprises a sealing upper cover, a sealing lower cover connected to the lower portion of the sealing upper cover, an integrally-formed elastic sealing valve and a sealing cover, the sealing upper cover and the sealing lower cover form a mounting cavity, and the elastic sealing valve is located in the mounting cavity; the elastic sealing valve comprises a sealing valve mounting part and a funnel part narrowing and extending away from the sealing valve mounting part from the sealing valve mounting part, an orifice is formed in the tail end of the funnel part, and the peripheral wall of the orifice can wrap surgical instruments with different diameters penetrating through the orifice; the integrally-formed protection piece is installed in the elastic sealing valve and comprises a main body ring and a stopping part connected to the main body ring, the main body ring is connected with the sealing valve installation part in a clamped mode, and the stopping part covers the upper surface of the funnel part and is used for stopping the funnel part from moving in the direction from the sealing lower cover to the sealing upper cover; the sealing valve assembly solves the problems that in the prior art, a puncture outfit is large in structural part number, large in mold number, large in assembly procedure number and high in manual assembly cost.

Description

Technical Field

[0001] The present application relates to the technical field of puncture devices, and more specifically, to a sealing valve assembly and a puncture device. Background Art

[0002] In laparoscopic surgery, a trocar can establish a channel in the abdominal wall for surgical instruments (eg, laparoscope, ultrasonic scalpel, stapler, etc.) to enter the human body and maintain the pneumoperitoneum required for surgery to facilitate surgical operations.

[0003] The puncture device in the prior art mainly includes a sleeve part and a puncture core rod. When in use, the puncture core rod is inserted into the sleeve part, and the puncture head of the puncture core rod extends out of the sleeve part. The puncture part includes a puncture rod and a puncture head connected to the end of the puncture rod. The puncture head is used to penetrate the body wall, and the puncture rod is used for medical staff to hold. First, a small incision is made on the patient's abdomen, and then the puncture head is aligned with the small incision and rotated back and forth while moving downward into the body cavity, and finally the sleeve part is left on the body wall.

[0004] The importance of airtightness in this process is obvious. In order to ensure the establishment and maintenance of gas during the operation, the trocar is equipped with a sealing valve assembly. The sealing valve assembly includes a sealing member for sealing when there is a surgical instrument and a non-return member for sealing when there is no surgical instrument. The sealing member has a sealing portion with a circular hole in the center. The diameter of the circular hole is slightly smaller than the outer diameter of the instrument, so that the sealing portion can be sealed against the outer wall of the instrument when the instrument passes through the circular hole.

[0005] In the prior art, the sealing valve assembly of the puncture device mainly includes an upper cover, a fixed upper cover, upper and lower cover seals, a protective blade, a fixed middle cover, a fixed lower cover, a four-piece folding sealing valve, a lower cover and other parts. Each part needs to be formed by a separate mold, and the mold investment cost is high. A large number of molds require multiple injection molding machines to cooperate in injection molding, and the injection molding efficiency is slow. The mold management cost is high, the number of parts is large, and the assembly process is many, the assembly efficiency is low, and the material occupies a large storage space. In particular, in the prior art, the fixed upper cover, the upper and lower cover seals, the protective blade, the four-piece folding sealing valve, and the fixed lower cover need to be assembled together in a certain order to form the entire sealing valve assembly. They are assembled together through multiple pins and pin holes, and multiple mounting through holes. This assembly process is complicated and time-consuming. In addition, these components need to be manufactured or processed separately. Utility Model Content

[0006] The main purpose of the utility model is to provide a sealing valve assembly, aiming to solve the technical problems in the prior art that the sealing valve assembly used for the puncture device has too many parts and components and is complicated and cumbersome to assemble.

[0007] To achieve the above purpose, the technical solution adopted by the utility model is: a hermetic sealing valve assembly, which includes:

[0008] A sealing upper cover and a sealing lower cover connected below the sealing upper cover, wherein the sealing upper cover and the sealing lower cover form a mounting cavity,

[0009] An integrally formed elastic sealing valve is located in the installation cavity, the elastic sealing valve comprising a sealing valve installation portion and a funnel portion extending away from the sealing valve installation portion, the end of the funnel portion having an orifice, the peripheral wall of the orifice being capable of wrapping surgical instruments of different diameters passing therethrough;

[0010] An integrally formed protective member installed in the elastic sealing valve, the protective member includes a main body ring and a stop portion connected to the main body ring, the main body ring is snap-fitted to the sealing valve mounting portion, the stop portion covers the upper surface of the funnel portion, and is used to stop the funnel portion from moving in the direction from the sealing lower cover toward the sealing upper cover.

[0011] Furthermore, the outer side of the main body ring has a convex ring portion, the inner side of the sealing valve mounting portion has an annular groove, and the convex ring portion is engaged with the annular groove.

[0012] Furthermore, the elastic sealing valve also includes a corrugated portion connected to the outer side of the sealing valve mounting portion, the corrugated portion includes at least one bending structure extending from the sealing valve mounting portion toward its outer side and a positioning groove portion connected to the outer side of the bending structure, and the positioning groove portion is respectively matched with the sealing upper cover and the sealing lower cover to limit the position.

[0013] Further, the stopper portion comprises a plurality of stopper blades integrally formed with the main body ring, adjacent stopper blades have overlapping portions, and distal ends of the plurality of stopper blades form notches matching the contour of the orifice of the funnel portion.

[0014] Furthermore, the sealing valve assembly includes an annular hard mounting member installed at the lower part of the elastic sealing valve, the upper surface of the annular hard mounting member has a plurality of plug-in members, and the inner side of the elastic sealing valve has through holes for the plurality of plug-in members to pass through.

[0015] In addition, the utility model also provides a puncture device, wherein the puncture device includes the above-mentioned sealing valve assembly.

[0016] Furthermore, the puncture device also includes a sleeve cover, a conversion cap knob and a spring, the sleeve cover is connected to the bottom of the sealing lower cover, the conversion cap knob is rotatably installed in the sleeve cover around the axis of the puncture device, and a notch is formed on the sleeve cover, the conversion cap knob includes a knob ring and a dial button arranged on the outside of the knob ring, the dial button protrudes from the notch, and the dial button is rotatably limited between the end walls corresponding to the two ends of the notch, the conversion cap knob also includes a mounting column arranged on the outside of the knob ring, one end of the spring is sleeved in the mounting column and stopped by the conversion cap knob, and the other end of the spring is limited by the sleeve cover, the elastic force of the spring keeps the conversion cap knob in the first position, and external force can drive the dial button to drive the conversion cap knob to rotate from the first position to the second position. In the first position and the second position, the dial button respectively abuts against different end walls corresponding to the two ends of the notch.

[0017] Furthermore, the conversion cap knob further comprises an axial baffle plate arranged outside the knob ring, and the spring is limited between the axial baffle plate and the sleeve upper cover along the axial direction of the puncture device.

[0018] Furthermore, the sleeve upper cover comprises a sleeve upper cover body and a hook portion extending from the sleeve upper cover body, and the conversion cap knob is limited between the sleeve upper cover body and the hook portion along the axial direction of the puncture device.

[0019] Furthermore, the knob ring and the mounting column are integrally formed, and the sleeve upper cover body and the hook portion are integrally formed.

[0020] Further, the puncture device includes a puncture core lower cover arranged on the sealing upper cover and a puncture core upper cover installed on the puncture core lower cover, the puncture core lower cover is integrally formed with a locking structure, the locking structure includes an elastic cantilever arranged on the puncture core lower cover, a locking limit portion arranged on the puncture core lower cover and a locking piece connected to the elastic cantilever through a crossbeam, the puncture core lower cover has a puncture core lower cover hole arranged corresponding to the orifice of the funnel portion, the locking piece can move between a locking position and a release position through the elasticity of the elastic cantilever, in the locking position, the locking piece is limited by the locking limit portion so as to be able to apply pressure to the surgical instrument passing through the puncture core lower cover hole to press it against the hole wall of the puncture core lower cover hole, and in the release position, the locking limit portion releases the limit on the locking piece so that the locking piece releases the pressure on the surgical instrument.

[0021] Furthermore, the locking piece is a locking plate, and one end of the locking plate facing the puncture core lower cover hole is a pressing surface having a side contour adapted to the surgical instrument, the axial projection of the pressing surface along the puncture core lower cover hole falls into the puncture core lower cover hole, and one end of the locking plate facing away from the puncture core lower cover hole extends out of the puncture core lower cover and the puncture core upper cover and has a pressing portion.

[0022] Furthermore, the locking limit portion includes a locking arm located on both sides of the lock plate, and the locking arm has a locking protrusion facing the lock plate. In the locking position, the lock plate is engaged with the locking protrusion, and in the release position, the locking protrusion releases the engagement with the lock plate.

[0023] Furthermore, the lower edge of the puncture core upper cover is provided with at least two buckle plates extending downward, the buckle plates pass downward through the puncture core lower cover and are buckled onto the sealing upper cover, and each of the buckle plates is provided with a pressing structure.

[0024] The sealing valve assembly and trocar provided by the present application have the following beneficial effects:

[0025] Since in the sealing valve assembly provided by the utility model of the present application, the elastic sealing valve is an integrally formed component and the protective component is also an integrally formed component, the number of parts of the sealing valve assembly is simplified, and the problems of the puncture device in the prior art having many structural parts, many molds, many assembly processes, and high manual assembly costs are solved, thereby reducing production risks and improving production efficiency.

[0026] In a further solution, one end of the spring is sleeved in the mounting column and stopped at the conversion cap knob. During the assembly process, the spring is supported and limited by the mounting column at least at one end with the mounting column and is not easy to fall off.

[0027] In a further solution, the knob ring and the mounting column are integrally formed, and the sleeve upper cover body and the hook portion 304 are integrally formed, which also solves the problem of the puncture device in the prior art having many structural parts, many molds, many assembly processes, and high manual assembly costs.

[0028] In a further solution, since the puncture core lower cover is integrally formed with a locking structure, the problems of the puncture device having many structural parts, many molds, many assembly processes, and high manual assembly costs are solved, and the production risk is also reduced and the production efficiency is improved. The material used for the specific locking structure can be the same as that of the puncture core lower cover. The puncture core lower cover and the locking structure are directly integrally formed and can be used directly after forming without assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A cross-sectional view of a sealing valve assembly provided for one embodiment of the present application;

[0031] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0032] Figure 3 A perspective exploded view of a sealing valve assembly provided in accordance with an embodiment of the present application;

[0033] Figure 4 A perspective view of a protective member in a sealing valve assembly provided by one embodiment of the present application;

[0034] Figure 5 Another perspective view of a protective member in a sealing valve assembly provided by one embodiment of the present application;

[0035] Figure 6 A three-dimensional assembly diagram of some components of a trocar provided in one embodiment of the present application;

[0036] Figure 7 For the corresponding Figure 6 A three-dimensional exploded view of some components of the trocar;

[0037] Figure 8 A three-dimensional diagram of a sleeve cover in a puncture device provided in one embodiment of the present application;

[0038] Fig. 9 A three-dimensional view of a conversion cap knob in a puncture device provided in one embodiment of the present application;

[0039] Fig.10 An assembly diagram of a sleeve upper cover and a conversion cap knob in a puncture device provided in one embodiment of the present application;

[0040] Fig.11 A cross-sectional view of a puncture device provided by one embodiment of the present application, wherein the locking member is in a locked position;

[0041] Fig.12 for Fig.11 The enlarged view of point A in the middle;

[0042] Fig.13Another cross-sectional view of a puncture device provided by one embodiment of the present application, wherein the locking member is in a released position;

[0043] Fig.14 A three-dimensional view of a lower cover of a puncture core in a puncture device provided in one embodiment of the present application, wherein the locking member is in a released position;

[0044] Fig.15 A three-dimensional view of a lower cover of a puncture core in a puncture device provided in one embodiment of the present application, wherein the locking member is in a locked position;

[0045] Fig.16 A three-dimensional diagram of an upper cover of a puncture core in a puncture device provided in one embodiment of the present application;

[0046] Fig.17 A three-dimensional view of a puncture core assembly in a puncture device provided in one embodiment of the present application;

[0047] Fig.18 A stereoscopic view of a puncture device provided in one embodiment of the present application.

[0048] The reference numerals in the above drawings are as follows:

[0049] 1-endoscope; 2-sealed upper cover; 3-sealed lower cover; 4-annular hard mounting piece; 5-spring; 6-tube seat; 7-tube body; 8-puncture core upper cover; 9-puncture core hollow rod; 10-puncture core head; 21-lower extension; 22-snap-in mouth; 31-upper extension; 32-wedge-shaped extension; 41-insertion column; 81-buckle plate; 82-puncture core upper cover hole; 83-pressing structure; 100-elastic sealing valve; 101-sealing valve mounting part; 102-funnel part; 103-orifice; 104-corrugated part; 105-upper positioning groove; 106-lower positioning groove; 107-ring groove; 108-through hole; 200-protection Parts; 201-main body ring; 202-convex ring; 203-stop blade; 300-sleeve cover; 301-notch; 302-mounting hole; 303-sleeve cover body; 304-hook; 400-conversion cap knob; 401-knob ring; 402-dial button; 403-mounting column; 404-axial baffle; 405-wedge structure; 500-piercing core lower cover; 501-elastic cantilever; 502-locking piece; 503-piercing core lower cover hole; 504-pressing surface; 505-pressing part; 506-card arm; 507-card convex part; 508-buckle plate through hole; 509-beam; 510-reinforcement rib. DETAILED DESCRIPTION

[0050] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0051] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0052] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] In order to illustrate the technical solution described in this application, a detailed description is given below in conjunction with specific drawings and embodiments.

[0055] See also Figures 1 to 5 and Fig.11 The present utility model embodiment provides a sealing valve assembly, in particular a sealing valve assembly for a trocar, which includes:

[0056] A sealing upper cover 2 and a sealing lower cover 3 connected below the sealing upper cover 2, wherein the sealing upper cover 2 and the sealing lower cover 3 form a mounting cavity;

[0057] An integrally formed elastic sealing valve 100 is located in the installation cavity. The elastic sealing valve 100 comprises a sealing valve installation portion 101 and a funnel portion 102 extending and narrowing away from the sealing valve installation portion 101. The end of the funnel portion 102 has an orifice 103. The peripheral wall of the orifice 103 can wrap surgical instruments (such as an endoscope 1, etc.) with different diameters passing therethrough, and is particularly configured to be able to sealably engage with the surgical instruments passing therethrough.

[0058] An integrally formed protective member 200 installed in the elastic sealing valve 100, the protective member 200 comprises a main body ring 201 and a stopper connected to the main body ring 201, the main body ring 201 is clamped with the sealing valve mounting portion 101, the stopper covers the upper surface of the funnel portion 102, and is used to stop the funnel portion 102 from moving in the direction S from the sealing lower cover 3 toward the sealing upper cover 2;

[0059] The sealing upper cover 2 and the sealing lower cover 3 connected below the sealing upper cover 2 form an installation cavity, and the elastic sealing valve 100 and the protective member 200 are located in the installation cavity.

[0060] Since in the sealing valve assembly provided by the utility model of the present application, the elastic sealing valve 100 is an integrally formed component and the protective component 200 is also an integrally formed component, the number of parts of the sealing valve assembly is simplified, and the problems of the puncture device in the prior art having many structural parts, many molds, many assembly processes, and high manual assembly costs are solved, thereby reducing production risks and improving production efficiency.

[0061] According to a specific embodiment of the utility model, the outer side of the main ring 201 has a convex ring portion 202, and the inner side of the sealing valve mounting portion 101 has a ring groove 107. The convex ring portion 202 is engaged with the ring groove 107, and the assembly method can be simplified through the engagement.

[0062] See also Figure 1According to an embodiment of the utility model, the elastic sealing valve 100 also includes a corrugated portion 104 connected to the outer side of the sealing valve mounting portion 101, preferably integrally formed with the sealing valve mounting portion 101, the corrugated portion 104 includes at least one bending structure extending from the sealing valve mounting portion 101 toward its outer side and a positioning groove portion connected to the outer side of the bending structure, the positioning groove portion is respectively matched with the sealing upper cover and the sealing lower cover. As a specific embodiment, the upper and lower sides of the positioning groove portion are respectively provided with an upper positioning groove 105 and a lower positioning groove 106, the sealing upper cover 2 extends downwardly to form a lower extension 21 that is matched with the upper positioning groove 105, and the sealing lower cover 3 extends upwardly to form an upper extension 31 that is matched with the lower positioning groove 106. The corrugated portion 104 provides sufficient flexibility to allow the components or surgical instruments sealed thereon to float in the housing composed of the sealing upper cover 2 and the sealing lower cover 3. In addition, the upper extension 31 and the lower extension 21 do not have to be set at the same time, and can be set either one of them. The elastic sealing valve 100, as the name implies, is made of an elastic material, such as synthetic rubber or natural rubber, which has sufficient elasticity to provide sufficient adaptability at the orifice 103 to facilitate the sealing insertion of surgical instruments. Since the sealing orifice 103 tightly wraps surgical instruments with different diameters passing therethrough, the air leakage that may occur during the operation of the instrument is minimized. The diameter of the inserted surgical instrument can range from 5 mm to 12 mm, but when there are other needs, the size of the orifice 103 can also be redesigned to match smaller or larger surgical instruments.

[0063] See also Figure 1 , Figure 4 and Figure 5According to an embodiment of the utility model, the stop portion includes a plurality of stop blades 203 integrally formed with the main body ring 201, and adjacent stop blades 203 have overlapping portions, and the ends of the plurality of stop blades 203 form a notch 301 that matches the contour of the orifice 103 of the funnel portion 102. Specifically, there may be four stop blades 203, but not limited to four. In the assembled state, each two adjacent pieces of the four stop blades 203 partially overlap, and the ends of the four stop blades 203 are all facing the center of the main body ring 201, and the ends of the four stop blades 203 roughly form the shape of a circular hole. Preferably, the directions of the four stop blades 203 are fixed. Considering the problems of the actual integrated molding process, some of the four stop blades 203 can be hinged to the main body ring 201, and the hinged stop blades 203 are below the blades with fixed directions, otherwise they are prone to flipping. The overlapping of the stop blades 203 can guide the surgical instrument toward the orifice 103, and prevent the funnel 102 from turning over when the surgical instrument is taken out of the orifice 103, that is, when the surgical instrument is taken out of the hole and is pulled out in the opposite direction of the shrinking direction of the funnel 102, the friction between the surface of the surgical instrument and the orifice 103 drives the elastic bottom hole of the funnel 102 to move in the direction of pulling out until the surgical instrument is separated from the hole, at which time the orifice 103 of the funnel 102 moves a certain distance to turn the funnel 102 over. In addition, in this embodiment, the stop blades 203 and the annular portion can be made of the same material or different materials.

[0064] According to a specific embodiment of the utility model, the stop blade 203 is stacked on the top of the funnel 102 and the orifice 103 of the funnel 102 is concentrically arranged with the circle formed by the end of the stop blade 203. When inserting a surgical instrument into the sealing valve assembly, it needs to first pass through the circular hole formed at the end of the stop blade 203 of the protective member 200 before passing through the orifice 103 of the funnel 102. The stop blade 203 guides the instrument to pass through the orifice 103 of the funnel and protects the orifice 103. The elastic sealing valve 100 can be formed by injection molding of one material or multiple materials. The protective member 200 can also be formed by injection molding of one material or multiple materials. The instrument passing through the sealing valve can operate the instrument in any direction (longitudinal or radial) within the range allowed by the rigid upper and lower shells and the cannula without affecting the seal.

[0065] See also Figure 1 and Figure 3According to a preferred embodiment of the utility model, the sealing valve assembly includes an annular hard mounting member 4 installed at the lower part of the elastic sealing valve 100, the upper surface of the annular hard mounting member 4 has a plurality of plug-in members, and the inner side of the elastic sealing valve 100 has a through hole 108 for the plurality of plug-in members to pass through. Specifically, the plurality of plug-in members can be a circle of plug-in posts 41 arranged at intervals along the annular hard mounting member, and the inner side of the elastic sealing valve 100 has a through hole 108 for the circle of plug-in posts 41 to pass through. Specifically, the elastic sealing valve 100 is fixed between the protective member 200 and the annular hard mounting member 4 by a circle of plug-in posts 14 on the annular hard mounting member 4 to constrain the movement of the elastic sealing valve 100.

[0066] The elastic sealing valve 100 and the protective member 200 are combined to form a floating sealing device (sealing valve assembly). When the slender surgical instrument is inserted into the puncture device and passes through the sealing valve assembly, the orifice 103 of the funnel portion 102 of the sealing valve tightly wraps the surface of the instrument due to the need for sealing, so that the instrument can drive the orifice 103 to move within the range defined by the sealing upper cover 2 and the sealing lower cover 3 of the puncture device according to the needs of the surgical operation. When the instrument moves downward to the lower limit, the outer annular portion of the protective member 200 can prevent the sealing valve from continuing to move downward, and the instrument can only continue to move downward through the orifice 103; when the instrument moves upward to the lower limit, the outer convex ring portion 202 of the main ring 201 of the protective member 200 can prevent the elastic sealing valve 100 from continuing to move upward, and the instrument can only continue to move upward through the orifice 103.

[0067] See also Figure 6 and Figure 7 , Fig.11 , Fig.13 and Fig.18 In addition, the utility model also provides a puncture device, which includes the above-mentioned sealing valve assembly.

[0068] See also Figures 6 to 10According to one embodiment of the utility model, the puncture device further comprises a sleeve upper cover 300, a conversion cap knob 400 and a spring 5, the sleeve upper cover 300 is connected to the bottom of the sealing lower cover 3, and a puncture sleeve is connected to the bottom of the sleeve upper cover 300. Specifically, the puncture sleeve comprises a sleeve seat 6 and a tube body 7 connected to the bottom of the sleeve seat 6, the sleeve seat 6 is connected to the bottom of the sleeve upper cover 300, the conversion cap knob 400 is rotatably installed in the sleeve upper cover 300 around the axis of the puncture device, a notch 301 is formed on the sleeve upper cover 300, the conversion cap knob 400 comprises a knob ring 401 and a dial button 402 arranged on the outside of the knob ring 401, the dial button 402 protrudes from the notch 301, and the dial button 402 is turned The dynamic limit is between the end walls corresponding to the two ends of the notch 301. The conversion cap knob 400 also includes a mounting post 403 arranged on the outside of the knob ring 401. One end of the spring 5 is sleeved in the mounting post 403 and stopped on the conversion cap knob 400. During the assembly process, the spring 5 is supported and limited by the mounting post 403 at least at the end with the mounting post 403 so as not to fall off. The other end of the spring 5 is limited by the sleeve cover 300. The elastic force of the spring 5 keeps the conversion cap knob 400 in the first position. The external force can drive the dial button 402 to drive the conversion cap knob 400 to rotate from the first position to the second position. In the first position and the second position, the dial button 402 respectively abuts against different end walls corresponding to the two ends of the notch 301.

[0069] According to a preferred embodiment of the present invention, the conversion cap knob 400 is made of a material with certain flexibility and rigidity, such as plastic, stainless steel, etc.

[0070] See also Figure 8 According to a preferred embodiment of the present invention, the upper surface of the sleeve upper cover 300 is substantially flat, and a plurality of mounting holes 302 are provided in the upper surface, so that the plurality of mounting parts at the lower part of the conversion cap assembly (which may include the aforementioned sealing lower cover 3, etc.) can pass through the mounting holes 302, thereby cooperating with the structure provided in the lower surface of the sleeve upper cover 300. The lower surface of the sleeve upper cover 300 is provided with a structure for installing the conversion cap knob 400 and the spring 5 therein, such as a limiting plate, a limiting convex rib, etc., so that the conversion cap knob 400 can rotate in the sleeve upper cover 300 and squeeze and release the spring 5 in a limited space.

[0071] The spring 5 is squeezed or released by the rotational movement of the conversion cap knob 400, and the spring 5 is released to a limited position (i.e., the default state of the conversion cap knob 400) so that the mounting portion of the conversion cap assembly (such as a hook, a buckle, and other structures) can pass through the mounting hole 302 to be squeezed and inserted into the sleeve upper cover 300, and the conversion cap assembly cannot be removed from the sleeve upper cover 300 after the installation is completed. The thumb is used to push the dial 402 of the conversion cap knob 400 to squeeze the spring 5, thereby opening the installation switch so that the conversion cap assembly can be removed from the sleeve, thereby enabling the conversion cap assembly to be installed on the sleeve upper cover 300 or removed from it. At this time, the clamping fit between the wedge-shaped extension portion 32 on the sealing lower cover 3 and the wedge-shaped structure 405 of the conversion cap knob 400 is opened, so that the sealing lower cover 3 can be removed from the sleeve upper cover 300.

[0072] See also Fig. 9 According to one embodiment of the utility model, the conversion cap knob 400 also includes an axial baffle 404 arranged on the outside of the knob ring 401, and the spring 5 is limited between the axial baffle 404 and the sleeve cover 300 along the axial direction of the puncture device to prevent the spring 5 from moving along the axial direction of the puncture device.

[0073] According to one embodiment of the utility model, the sleeve cover 300 includes a sleeve cover body 303 and hook portions 304 (for example, 2 or more) extending from the sleeve cover body 303, and the conversion cap knob 400 is limited between the sleeve cover body 303 and the hook portion 304 along the axial direction of the puncture device.

[0074] The mounting post 403 and the hook portion 304 can be realized by making slight modifications to the existing mold, and are integrally formed on the corresponding components using the same material as that used to form the conversion cap knob 400 or the sleeve cover 300. Although the changes to the structures of the conversion cap knob 400 and the sleeve cover 300 are slight, they can facilitate assembly and greatly improve assembly efficiency.

[0075] According to a preferred embodiment of the utility model, the knob ring 401 and the mounting column 403 are integrally formed, and the sleeve upper cover body 303 and the hook portion 304 are integrally formed, which also solves the problem of the puncture device in the prior art having many structural parts, many molds, many assembly processes, and high manual assembly costs.

[0076] See also Figures 11 to 18According to one embodiment of the utility model, the puncture device includes a puncture core lower cover 500 arranged on the sealing upper cover 2 and a puncture core upper cover 8 installed on the puncture core lower cover 500. The puncture core lower cover 500 is integrally formed with a locking structure, and the locking structure includes an elastic cantilever 501 arranged on the puncture core lower cover 500, a locking limit portion arranged on the puncture core lower cover 500, and a locking piece 502 connected to the elastic cantilever 501 through a crossbeam 509. The elastic cantilever 501 extends upward from the upper surface of the puncture core lower cover 500 and then extends downward after being bent. The puncture core lower cover 500 has a puncture core lower cover hole 503 arranged corresponding to the orifice 103 of the funnel portion 102, and the locking piece 502 can be elastically locked through the elastic cantilever 501. It moves between a locked position and a released position. In the locked position, the locking piece 502 is limited by the locking limit portion so as to be able to apply pressure to the surgical instrument passing through the puncture core lower cover hole 503 to press it against the hole wall of the puncture core lower cover hole 503 to fix it in position. When the endoscope 1 passes through the puncture core lower cover 500 and enters the transparent cavity in the puncture core rod to work, the locking structure is used to fix the endoscope 1 to prevent the endoscope 1 from making unwanted movements during work and affecting the observation effect of medical staff. In the released position, the locking limit portion releases the limit on the locking piece 502 so that the locking piece 502 releases the pressure on the surgical instrument, thereby facilitating the surgical instrument to move freely up and down along the puncture core upper cover 8 and the puncture core lower cover 500.

[0077] Since the puncture core lower cover 500 is integrally formed with a locking structure, the problems of the puncture device having many structural parts, many molds, many assembly processes, and high manual assembly costs are solved, and the production risk is also reduced and the production efficiency is improved. The material used for the specific locking structure can be the same as that of the puncture core lower cover 500. The puncture core lower cover 500 and the locking structure are directly integrally formed and can be used directly after forming without assembly.

[0078] According to a preferred embodiment of the present utility model, there are two elastic cantilevers 501 arranged at intervals, and the locking member 502 is connected between the two elastic cantilevers 501 through a crossbeam 509 .

[0079] According to one embodiment of the utility model, the locking piece 502 is a locking plate, and one end of the locking plate facing the puncture core lower cover hole 503 is a pressing surface 504 having a side profile that matches the surgical instrument, such as an inwardly concave arc surface that matches the side edge profile of a pipe structure (endoscope 1). The axial projection of the pressing surface 504 along the puncture core lower cover hole 503 falls into the puncture core lower cover hole 503, which is convenient for pressing the instrument passing through the puncture core lower cover hole 503. The end of the locking plate away from the puncture core lower cover hole 503 extends out of the puncture core lower cover 500 and the puncture core upper cover 8 and has a pressing portion 505, which is convenient for manual pressing operations. Reinforcing ribs 510 can also be provided on the locking plate to increase its strength.

[0080] According to one embodiment of the utility model, the locking limit portion includes a locking arm 506 located on both sides of the lock plate, and the locking arm 506 has a locking protrusion 507 facing the lock plate. In the locked position, the lock plate is engaged with the locking protrusion 507, and in the release position, the locking protrusion 507 releases the engagement with the lock plate.

[0081] According to one embodiment of the utility model, the lower edge of the puncture core upper cover 8 is provided with at least two buckle plates 81 extending downward, and the two buckle plates 81 can be symmetrically arranged on both sides of the puncture core upper cover 8, but the number and specific arrangement position are not limited thereto. The buckle plate 81 passes downward through the puncture core lower cover 500 and is buckled on the sealing upper cover 2. The puncture core lower cover 500 has a buckle plate through hole 508 for the buckle plate 81 to pass through. The sealing upper cover 2 has a buckle opening 22 or a buckle groove matching the buckle plate 81. A pressing structure 83 is provided on the buckle plate 81, which can specifically be a textured concave-convex structure for increasing the pressing and friction effect of fingers, making it convenient for users to pick up or operate. More specifically, there is a long gap between the pressing structure 83 and the side of the puncture core upper cover 8, which is convenient for pressing and the pressing can drive the buckle plate 81 formed integrally with the lower part of the pressing structure 83 to move, so as to be assembled to the sealing upper cover 2 or released from the sealing upper cover 2.

[0082] In addition, a puncture core upper cover hole 82 is provided on the puncture core upper cover 8, and the puncture core upper cover hole 82 is coaxially aligned with the puncture core lower cover hole 503, and a slender instrument can pass through the puncture core upper cover hole 82 and the puncture core lower cover hole 503. A puncture core hollow rod 9 extending along the axis of the puncture core upper cover hole 82 and the puncture core lower cover hole 503 is provided below the puncture core lower cover 500, and a puncture core head 10 with a pointed tip is provided below the puncture core hollow rod 9, and the puncture core head 10 is partially transparent, which is used to pass through tissues and facilitate the endoscope 1 to observe the tissue condition at the position in the body where the puncture core is located.

[0083] According to one embodiment of the utility model, the puncture core hollow rod 9 can be a stainless steel tube. In another embodiment, the puncture core hollow rod 9, the puncture core head 10 and the puncture core lower cover 500 are made of a transparent material. The transparent material is, for example, plastic. This can further reduce the manufacturing cost and avoid the sealing problem caused by the combination of different materials. Specifically, the shape and size of the puncture core hollow rod 9 can be set to facilitate the passage of the endoscope 1, and enable the puncture core hollow rod 9 to be selectively fixed to the puncture sleeve at the bottom of the puncture device (as mentioned above, including the sleeve seat 6 and the tube body 7 connected below the sleeve seat 6). In addition, the puncture core (including the puncture core hollow rod 9 and the puncture core head 10) is used in combination with the puncture sleeve at the bottom thereof, and can be specifically inserted into the sleeve seat 6 and the tube body 7, and the puncture core is provided with a matching pin and the puncture sleeve is provided with a structure that cooperates with the matching pin and is detachably connected, so that the puncture core and the puncture sleeve are selectively connected, and the puncture core lower cover 500, the puncture core upper cover 8, the puncture core hollow rod 9 and the puncture core head 10 together constitute a puncture core assembly.

[0084] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A sealing valve assembly, characterized in that: include: A sealing upper cover and a sealing lower cover connected below the sealing upper cover, wherein the sealing upper cover and the sealing lower cover form a mounting cavity, An integrally formed elastic sealing valve is located in the installation cavity, the elastic sealing valve comprising a sealing valve installation portion and a funnel portion extending away from the sealing valve installation portion, the end of the funnel portion having an orifice, the peripheral wall of the orifice being capable of wrapping surgical instruments of different diameters passing therethrough; An integrally formed protective member installed in the elastic sealing valve, the protective member includes a main body ring and a stop portion connected to the main body ring, the main body ring is snap-fitted to the sealing valve mounting portion, the stop portion covers the upper surface of the funnel portion, and is used to stop the funnel portion from moving in the direction from the sealing lower cover toward the sealing upper cover.

2. The sealing valve assembly according to claim 1, characterized in that: The outer side of the main body ring has a convex ring portion, the inner side of the sealing valve mounting portion has an annular groove, and the convex ring portion is engaged with the annular groove.

3. The sealing valve assembly according to claim 1, characterized in that: The elastic sealing valve also includes a corrugated portion connected to the outer side of the sealing valve mounting portion, the corrugated portion includes at least one bending structure extending from the sealing valve mounting portion toward its outer side and a positioning groove portion connected to the outer side of the bending structure, and the positioning groove portion is respectively limited and matched with the sealing upper cover and the sealing lower cover.

4. The sealing valve assembly according to claim 1, characterized in that: The stopper portion includes a plurality of stopper blades integrally formed with the main body ring, adjacent stopper blades have overlapping portions, and distal ends of the plurality of stopper blades form notches matching the contour of the orifice of the funnel portion.

5. The sealing valve assembly according to any one of claims 1 to 4, characterized in that: The sealing valve assembly comprises an annular hard mounting member installed at the lower part of the elastic sealing valve, the upper surface of the annular hard mounting member is provided with a plurality of plug-in members, and the inner side of the elastic sealing valve is provided with through holes for the plurality of plug-in members to pass through.

6. A trocar, characterized in that: The piercer comprises a sealing valve assembly according to any one of claims 1 to 5.

7. The trocar according to claim 6, characterized in that: The puncture device also includes a sleeve upper cover, a conversion cap knob and a spring, the sleeve upper cover is connected to the bottom of the sealing lower cover, the conversion cap knob is rotatably installed in the sleeve upper cover around the axis of the puncture device, a notch is formed on the sleeve upper cover, the conversion cap knob includes a knob ring and a dial button arranged on the outside of the knob ring, the dial button protrudes from the notch, and the dial button is rotatably limited between the end walls corresponding to the two ends of the notch, the conversion cap knob also includes a mounting column arranged on the outside of the knob ring, one end of the spring is sleeved in the mounting column and stopped on the conversion cap knob, the other end of the spring is limited by the sleeve upper cover, the elastic force of the spring keeps the conversion cap knob in the first position, and external force can drive the dial button to drive the conversion cap knob to rotate from the first position to the second position. In the first position and the second position, the dial button respectively abuts against different end walls corresponding to the two ends of the notch.

8. The trocar according to claim 7, characterized in that: The conversion cap knob further comprises an axial baffle plate arranged outside the knob ring, and the spring is limited between the axial baffle plate and the sleeve upper cover along the axial direction of the puncture device.

9. The trocar according to claim 7, characterized in that: The sleeve upper cover comprises a sleeve upper cover body and a hook portion extending from the sleeve upper cover body, and the conversion cap knob is limited between the sleeve upper cover body and the hook portion along the axial direction of the puncture device.

10. The trocar according to claim 9, characterized in that: The knob ring and the mounting column are integrally formed, and the sleeve upper cover body and the hook portion are integrally formed.

11. The trocar according to any one of claims 6 to 10, characterized in that: The puncture device comprises a puncture core lower cover arranged on the sealing upper cover and a puncture core upper cover installed on the puncture core lower cover, the puncture core lower cover is integrally formed with a locking structure, the locking structure comprises an elastic cantilever arranged on the puncture core lower cover, a locking limit portion arranged on the puncture core lower cover and a locking piece connected to the elastic cantilever through a crossbeam, the puncture core lower cover has a puncture core lower cover hole arranged corresponding to the orifice of the funnel portion, the locking piece can move between a locking position and a releasing position through the elasticity of the elastic cantilever, in the locking position, the locking piece is limited by the locking limit portion so as to be able to apply pressure to a surgical instrument passing through the puncture core lower cover hole to press it against the hole wall of the puncture core lower cover hole, and in the releasing position, the locking limit portion releases the limit on the locking piece so that the locking piece releases the pressure on the surgical instrument.

12. The trocar according to claim 11, characterized in that: The locking piece is a locking plate, and one end of the locking plate facing the puncture core lower cover hole is a pressing surface with a side contour that fits the surgical instrument, and the axial projection of the pressing surface along the puncture core lower cover hole falls into the puncture core lower cover hole, and one end of the locking plate facing away from the puncture core lower cover hole extends out of the puncture core lower cover and the puncture core upper cover and has a pressing portion.

13. The trocar according to claim 12, characterized in that: The locking limit portion includes a clamping arm located on both sides of the lock plate, and the clamping arm has a clamping protrusion facing the lock plate. In the locking position, the lock plate is engaged with the clamping protrusion, and in the release position, the clamping protrusion releases the engagement with the lock plate.

14. The trocar according to claim 11, characterized in that: The lower edge of the puncture core upper cover is provided with at least two buckle plates extending downward, the buckle plates pass downward through the puncture core lower cover and are buckled onto the sealing upper cover, and each of the buckle plates is provided with a pressing structure.

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