Internal and external sealing integrated sealing structure

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to an internal and external sealing integrated sealing structure. The utility model aims at providing a puncture outfit convenient for taking out larger surgical foreign matters in the prior art, and provides a sealing structure with an integrated inner and outer sealing function, which is applied to the puncture outfit and comprises a sleeve and an air valve component connected to one side of the sleeve, and a sealing cap body is detachably connected to the upper portion of the sleeve. The sealing cap body comprises a sealing cap body shell and an inner sealing structure, an outer sealing structure, an upper sealing structure and a lower sealing structure which are connected in the shell, the sealing cap body is detachably connected with the sleeve, and when a large foreign matter needs to be taken out, the inner sealing structure and the outer sealing structure can be separated simultaneously by directly disassembling the sealing cap body so that a sleeve opening can be completely exposed; and a surgical instrument can conveniently and directly take out larger surgical foreign matters from the cannula opening of the puncture outfit.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to an internal and external sealing integrated sealing structure. Background Art

[0002] Laparoscopic surgery is the mainstream of minimally invasive surgery and has broad development prospects in the future. Currently, the puncture device is popular with an upper and lower double-layer sealing structure, in which the lower sealing structure is installed in the puncture device sleeve and is arranged above the puncture device sleeve air inlet assembly to maintain pneumoperitoneum during inflation. However, the lower sealing structure will cause air leakage due to the movement of the instrument, so the puncture device is generally also provided with an upper sealing structure to allow the instrument to pass through, which is used to maintain the seal when the instrument is working. During the operation, foreign matter such as cut tissue is often produced. At this time, it is necessary to disassemble the upper sealing structure to facilitate the removal of foreign matter. But sometimes, the foreign matter that needs to be removed during the operation is large, and it may be necessary to remove the lower sealing structure at the same time to successfully remove it.

[0003] For example, a Chinese utility model patent discloses a puncture cannula device for a laparoscopic puncture device [application number: CN201810201518.X]. The utility model includes a puncture cannula body and a two-stage sealing device, wherein the puncture cannula body includes a puncture cannula seat and a cannula, wherein the two-stage sealing device is installed above the puncture cannula seat, and the cannula is installed below the puncture cannula seat; an air injection valve is installed on the side wall of the puncture cannula seat, and the air injection valve and the puncture cannula are integrated. The two-stage sealing device includes a first sealing component and a second sealing component; the first sealing component is located above the second sealing component.

[0004] Although the utility model has a detachable two-stage sealing device to facilitate the removal of the upper sealing structure to take out foreign objects, the connection between the two-stage sealing devices is not easy to separate, especially the second sealing component located at the bottom is more difficult to remove, and the function of quickly removing the sealing device to take out larger surgical foreign objects is not achieved. Summary of the invention

[0005] The purpose of the utility model is to provide an integrated inner and outer sealing structure for a trocar in order to solve the above problems.

[0006] The utility model comprises a sleeve and an air valve assembly connected to one side of the sleeve, a sealing cap body is detachably connected above the sleeve, the sealing cap body is fixedly connected to the sleeve through a sealing cap body shell, an opening for accommodating the insertion of a puncture needle rod is provided on the upper part of the sealing cap body, an outer sealing structure and an inner sealing structure are included in the sealing cap body, the outer sealing structure and the inner sealing structure are both made of elastic material, the outer sealing structure and the sealing cap body shell are connected through a first sealing assembly, the sealing cap body also comprises a second sealing assembly, the second sealing assembly is not only used to connect the outer sealing structure and the inner sealing structure, but also can press the inner sealing structure to form a tight sealing structure at the sleeve opening when the sealing cap body is connected and fixed to the sleeve.

[0007] Preferably, the second sealing component is connected to the inner sealing structure by elastic interlocking, and is also connected to the outer sealing structure by elastic interlocking. The outer shell of the sealing cap body is provided with an elastic sealing base. The outer periphery of the second sealing component is also provided with an elastic boss pressed on the column groove of the sealing base of the outer shell of the sealing cap body. The sealing base is deformed by the extrusion of the boss to form a tight seal between the sealing cap body and the sleeve.

[0008] Preferably, the specific structure of the inner sealing structure that plays a sealing role includes an inner annular base, a cross sealing bottom and a cylindrical body connected to the cross sealing bottom, the cylindrical body is provided with four ridges evenly distributed circumferentially, the cross sealing bottom is composed of a skirt connected to the edge of the ridges at the bottom of the cylindrical body, there is a gap between the skirts, and an elastic groove matching the bottom surface of the second sealing component is provided between the inner annular base and the cylindrical body.

[0009] Preferably, the outer sealing structure includes an umbrella-shaped sealing gasket, an umbrella-shaped supporting portion, an annular outer sealing lower gasket and an annular sealing spacer ring, the umbrella-shaped sealing gasket includes an annular base, the annular base is pressed on the annular outer sealing lower gasket, and the bottom of the umbrella-shaped sealing gasket is engaged with the second sealing assembly; the annular sealing spacer ring is pressed on the annular base, and the umbrella-shaped supporting portion is pressed on the annular sealing spacer ring, and sealing sheets with sealing holes and supporting grooves are alternately distributed circumferentially on its periphery.

[0010] Furthermore, the annular base of the umbrella-shaped sealing gasket is evenly distributed with sealing holes in the circumference, and the annular outer sealing lower gasket and the annular sealing spacer are evenly and alternately provided with sealing holes and sealing columns. The sealing columns of the annular outer sealing lower gasket and the annular sealing spacer are staggered through the sealing holes of the annular base and inserted into each other's sealing holes correspondingly, thereby clamping and fixing the umbrella-shaped sealing gasket.

[0011] Furthermore, since the outer sealing structure does not have a structure that matches and fixes with the outer shell of the sealing cap body, the first sealing component includes an annular wave sealing ring, which is connected to the outer sealing structure by being clamped and fixed by the outer sealing structure, and its periphery wraps the outer sealing structure and forms a tightly fitting structure with the outer shell of the sealing cap body.

[0012] Furthermore, the first sealing component also includes an external sealing cover, and the inner circumference of the annular wave sealing ring is alternately provided with fixed blocks and hollow grooves with evenly distributed fixed holes, and the fixed blocks are pressed on the sealing sheet; the external sealing cover is composed of an external sealing base and a convex ring with a sealing column and a protrusion, the sealing column of the external sealing base passes through the fixed hole and is inserted into the sealing hole of the sealing sheet, the protrusion passes through the hollow groove and is embedded in the supporting groove, and the convex ring is inserted into the internal space surrounded by the sealing sheet and the supporting groove of the umbrella-shaped support part.

[0013] In order to increase the connection stability, a groove is provided on the outer periphery of the wave sealing ring, and a raised ring is provided on the top of the sealing cap body. The raised ring is elastically embedded in the groove to achieve a tighter connection between the wave sealing ring and the sealing cap body shell.

[0014] Preferably, the sealing cap body is connected to the sleeve by means of a rotating slot, which facilitates disassembly.

[0015] Preferably, the top of the sealing cap shell has a pair of positioning grooves for accommodating the puncture rod needle.

[0016] Compared with the existing technology, the utility model has the advantage that the inner and outer sealing structures of the sealing cap provided by the utility model are integrated in the rotating cap body, which is convenient for disassembly and assembly, and the puncture cannula port can be quickly opened to remove larger surgical foreign bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a preliminary exploded diagram of the utility model;

[0019] Figure 3 for Figure 1 A cross-sectional view of

[0020] Figure 4 It is a partial structure explosion diagram of the utility model;

[0021] Figure 5 It is a top view of part of the structure of the utility model;

[0022] Figure 6 This is a bottom view of the housing of the utility model;

[0023] Figure 7 This is another perspective view of the housing of the utility model.

[0024] In the figure: sleeve 1, air valve assembly 2, sealing cap body 3, puncture needle rod 4, sealing cap body shell 31, annular wave sealing ring 32, sealing base 33, outer sealing structure 3a, raised ring 31a, positioning groove 31b, column groove 33a, umbrella-shaped sealing pad 3a1, umbrella-shaped support part 3a2, annular outer sealing lower gasket 3a3, annular sealing spacer ring 3a4, annular base 3a11, sealing sheet 3a21, supporting groove 3a22, inner sealing Structure 3b, inner annular base 3b1, cross sealing bottom 3b2, cylinder 3b3, elastic groove 3b4, convex ridge 3b31, first sealing component 3c, annular wave sealing ring 3c1, fixing block 3c11, fixing hole 3c111, hollow groove 3c12, outer sealing cover 3c2, outer sealing base 3c21, sealing column 3c211, convex ring 3c22, groove 3c1a, second sealing component 3d, elastic convex column 3d1. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] like Figure 1-3 , Figure 7 As shown, the utility model provides an integrated inner and outer sealing structure, including a sleeve 1 and an air valve assembly 2 connected to one side of the sleeve 1, a sealing cap body 3 is detachably connected to the top of the sleeve 1, the sealing cap body 3 is fixedly connected to the sleeve 1 through a sealing cap body shell 31, an opening is provided on the upper part of the sealing cap body 3 for accommodating the insertion of a puncture needle rod 4, the sealing cap body 3 includes an outer sealing structure 3a and an inner sealing structure 3b, the outer sealing structure 3a and the inner sealing structure 3b are both made of elastic material, the outer sealing structure 3a and the sealing The cap body shell 31 is connected through the first sealing component 3c, and the sealing cap body 3 also includes a second sealing component 3d, and the second sealing component 3d is used to connect the outer sealing structure 3a and the inner sealing structure 3b, and the second sealing component 3d is elastically connected to the inner sealing structure 3b and the outer sealing structure 3a, and the sealing cap body shell 31 is provided with an elastic sealing base 33, and the outer periphery of the second sealing component 3d is also provided with an elastic protruding column 3d1 pressed on the column groove 33a of the base 33 of the sealing cap body shell 31.

[0027] During use, the sealing cap body 3 is initially connected to the sleeve 1 in a detachable manner, and the sealing base 33 in the sealing cap body 3 is squeezed by the elastic protruding column 3d1 of the second sealing component 3d in a manner of being inserted into the column groove 33a during installation, thereby forming a tight sealing structure at the connection between the sealing cap body 3 and the sleeve 1.

[0028] After puncture by the puncture device, pneumoperitoneum is established through the air valve assembly 2, and the inner sealing structure 3b maintains the pneumoperitoneum. After the instrument is introduced through the top of the sealing cap body 3 for surgery, the sealing of the inner sealing structure 3b fails, and at this time the outer sealing structure 3a plays a sealing role.

[0029] As a preference, Figure 4 and Figure 5 As shown, the sealing body of the inner sealing structure 3b that plays a sealing role includes an inner annular base 3b1, a cross sealing bottom 3b2 and a cylindrical body 3b3 connected to the cross sealing bottom 3b2. There are four convex ridges 3b31 evenly distributed in the circumferential direction in the cylindrical body 3b3. The cross sealing bottom 3b2 is composed of a skirt connected to the edge of the cylindrical bottom by the convex ridges 3b31. The skirts fit tightly together. When the instrument enters, it contacts the convex ridges 3b31 to drive the skirt to open. By arranging an elastic groove 3b4 that matches the bottom surface of the second sealing component 3d between the inner annular base 3b1 and the cylindrical body 3b3, the inner sealing body and the second sealing component 3d are elastically fitted together and fixed in the sealing cap body 3.

[0030] As a preference, Figure 4 As shown, the outer sealing structure 3a includes an umbrella-shaped sealing gasket 3a1, an umbrella-shaped supporting portion 3a2, an annular outer sealing lower gasket 3a3 and an annular sealing spacer ring 3a4, the umbrella-shaped sealing gasket 3a1 includes an annular base 3a11, the annular base 3a11 is pressed on the annular outer sealing lower gasket 3a3, and the bottom of the umbrella-shaped sealing gasket 3a1 is engaged with the second sealing component 3d; the annular sealing spacer ring 3a4 is pressed on the annular base 3a11, and the umbrella-shaped supporting portion 3a2 is pressed on the annular sealing spacer ring 3a4, and sealing sheets 3a21 with sealing holes and supporting grooves 3a22 are alternately distributed in the circumferential direction of the outer periphery.

[0031] Furthermore, the annular base 3a11 is evenly distributed with sealing holes in the circumference, and the annular outer sealing lower gasket 3a3 and the annular sealing spacer 3a4 are evenly and alternately provided with sealing holes and sealing columns, and the sealing columns of the annular outer sealing lower gasket 3a3 and the annular sealing spacer 3a4 are staggered through the sealing holes of the annular base 3a11 and correspondingly inserted into each other's sealing holes to achieve clamping and fixing of the umbrella-shaped sealing gasket 3a1. The umbrella-shaped sealing gasket 3a1 plays a major sealing role, and the umbrella-shaped support portion 3a2 above it is used to play a buffering role to prevent the umbrella-shaped sealing gasket 3a1 from being punctured.

[0032] As a preference, Figure 4 As shown, the connection method between the outer sealing structure 3a and the sealing cap body shell 31 is: the first sealing component 3c includes an annular wave sealing ring 3c1, which is clamped and fixed by the outer sealing structure 3a, and its outer periphery wraps the outer sealing structure 3a and forms a tightly fitting structure with the sealing cap body shell 31.

[0033] Furthermore, the first sealing component 3c also includes an outer sealing gland 3c2, and the inner circumference of the annular wave sealing ring 3c1 is alternately provided with fixing blocks 3c11 and hollow grooves 3c12 with evenly distributed fixing holes 3c111, and the fixing blocks 3c11 are pressed on the sealing sheet 3a21; the outer sealing gland (3c2) is composed of an outer sealing base 3c21 with a sealing column 3c211 and a protrusion 3c212, and a convex ring 3c22, the sealing column 3c211 of the outer sealing base 3c21 passes through the fixing hole 3c111 and is inserted into the sealing hole of the sealing sheet 3a21, the protrusion 3c212 passes through the hollow groove 3c12 and is embedded in the supporting groove 3a22, and the convex ring 3c22 is inserted into the internal space surrounded by the umbrella-shaped supporting part sealing sheet 3a21 and the supporting groove 3a22, and the annular wave sealing ring 3c1 is clamped and fixed on the outer sealing structure 3a through the above scheme.

[0034] Further, such as Figure 4 and Figure 6 As shown, there is a groove 3c1a on the outer periphery of the wave sealing ring 3c1, and there is a raised ring 31a on the top of the sealing cap body 3. The raised ring 31a is elastically embedded in the groove 3c1a, so that the wave sealing ring 3c1 is completely fixed on the sealing cap body 3, thereby fixing the external sealing structure 3a on the sealing cap body 3.

[0035] Preferably, the sealing cap body 3 is connected to the sleeve 1 by means of a rotating slot, and the sealing cap body 3 can be connected to and removed from the sleeve 1 by rotating it, which is easy to operate.

[0036] As a common configuration, such as Figure 7 As shown, the top of the sealing cap shell 31 has a pair of positioning grooves 31b for accommodating the two ears of the puncture rod.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0038] Although the present invention uses more sleeve 1, air valve assembly 2, sealing cap body 3, puncture needle rod 4, sealing cap body shell 31, annular wave sealing ring 32, sealing base 33, outer sealing structure 3a, raised ring 31a, positioning groove 31b, column groove 33a, umbrella-shaped sealing pad 3a1, umbrella-shaped supporting part 3a2, annular outer sealing lower gasket 3a3, annular sealing spacer ring 3a4, annular base 3a11, sealing sheet 3a21, supporting groove 3a22, inner sealing structure 3b, inner The terms annular base 3b1, cross seal bottom 3b2, cylinder 3b3, elastic groove 3b4, convex ridge 3b31, first seal assembly 3c, annular wave seal ring 3c1, fixing block 3c11, fixing hole 3c111, hollow groove 3c12, outer seal gland 3c2, outer seal base 3c21, seal column 3c211, convex ring 3c22, groove 3c1a, second seal assembly 3d, elastic convex column 3d1, etc., but the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A sealing structure with integrated inner and outer seals, comprising a sleeve (1) and an air valve assembly (2) connected to one side of the sleeve (1); a sealing cap body (3) is detachably connected to the top of the sleeve (1); the sealing cap body (3) is fixedly connected to the sleeve (1) through a sealing cap body shell (31); an opening for accommodating a puncture needle rod (4) is provided on the top of the sealing cap body (3); the sealing cap body (3) comprises an outer sealing structure (3a) and an inner sealing structure (3b); the outer sealing structure (3a) and the inner sealing structure (3b) are both made of elastic material; the outer sealing structure (3a) and the sealing cap body shell (31) are connected through a first sealing assembly (3c); and the characteristics are: The sealing cap body (3) further comprises a second sealing component (3d), wherein the second sealing component (3d) is used to connect the outer sealing structure (3a) and the inner sealing structure (3b), and can press the sealing cap body (3) against the opening of the sleeve (1) to form a tight sealing structure when the sealing cap body (3) is connected to the sleeve (1).

2. The inner and outer sealing structure as claimed in claim 1, characterized in that: The second sealing component (3d) is elastically connected to the inner sealing structure (3b) and to the outer sealing structure (3a) through elastic interlocking. The sealing cap body shell (31) is provided with an elastic sealing base (33). The outer periphery of the second sealing component (3d) is also provided with an elastic protruding column (3d1) pressed on a column groove (33a) of the base (33) of the sealing cap body shell (31).

3. The inner and outer sealing structure as claimed in claim 1, characterized in that: The inner sealing structure (3b) comprises an inner annular base (3b1), a cross sealing bottom (3b2) and a cylindrical body (3b3) connected to the cross sealing bottom (3b2); the cylindrical body (3b3) has four convex ridges (3b31) evenly distributed in the circumferential direction; the cross sealing bottom (3b2) is composed of a skirt connected to the convex ridges (3b31) at the edge of the bottom of the cylindrical body; a gap exists between the skirts; an elastic groove (3b4) matching the bottom surface of the second sealing component (3d) is provided between the inner annular base (3b1) and the cylindrical body (3b3).

4. The inner and outer sealing structure as claimed in claim 2, characterized in that: The outer sealing structure (3a) comprises an umbrella-shaped sealing gasket (3a1), an umbrella-shaped supporting portion (3a2), an annular outer sealing lower gasket (3a3) and an annular sealing spacer (3a4); the umbrella-shaped sealing gasket (3a1) comprises an annular base (3a11), the annular base (3a11) is pressed onto the annular outer sealing lower gasket (3a3), and the bottom of the umbrella-shaped sealing gasket (3a1) is engaged with the second sealing component (3d); the annular sealing spacer (3a4) is pressed onto the annular base (3a11), and the umbrella-shaped supporting portion (3a2) is pressed onto the annular sealing spacer (3a4), and sealing sheets (3a21) with sealing holes and supporting grooves (3a22) are alternately distributed on the outer periphery thereof.

5. The inner and outer sealing structure as claimed in claim 4, characterized in that: The annular base (3a11) is evenly distributed with sealing holes in the circumference, and the annular outer sealing lower gasket (3a3) and the annular sealing spacer (3a4) are evenly and alternately provided with sealing holes and sealing columns, and the sealing columns of the annular outer sealing lower gasket (3a3) and the annular sealing spacer (3a4) are staggered through the sealing holes of the annular base (3a11) and are correspondingly inserted into each other's sealing holes.

6. The inner and outer sealing structure as claimed in claim 5, characterized in that: The first sealing component (3c) comprises an annular wave sealing ring (3c1), which is clamped and fixed by the outer sealing structure (3a) and wraps the outer sealing structure (3a), while forming a tightly fitting structure with the sealing cap body shell (31).

7. The inner and outer sealing structure as claimed in claim 5, characterized in that: The first sealing component (3c) further comprises an outer sealing gland (3c2); a fixing block (3c11) and a hollow groove (3c12) are alternately provided with evenly distributed fixing holes (3c111) on the inner circumference of the annular wave sealing ring (3c1); the fixing block (3c11) is pressed on the sealing sheet (3a21); the outer sealing gland (3c2) comprises an outer sealing base (3c21) with a sealing column (3c211) and a convex ring (3c22); the sealing column (3c211) of the outer sealing base (3c21) passes through the fixing hole (3c111) and is inserted into the sealing hole of the sealing sheet (3a21); the convex ring (3c22) passes through the hollow groove (3c12) and is embedded in the supporting groove (3a22); and the convex ring (3c22) is inserted into the internal space surrounded by the umbrella-shaped supporting portion sealing sheet (3a21) and the supporting groove (3a22).

8. The inner and outer sealing structure as claimed in claim 7, characterized in that: A groove (3c1a) is provided on the outer periphery of the wave sealing ring (3c1), and a raised ring (31a) is provided on the top of the sealing cap body (3), and the raised ring (31a) is elastically embedded in the groove (3c1a).

9. The inner and outer sealing structure as claimed in claim 1, characterized in that: The sealing cap body (3) is connected to the sleeve (1) by means of a rotating slot.

10. The inner and outer sealing structure as claimed in claim 1, characterized in that: The top of the sealing cap shell (31) is provided with a pair of positioning grooves (31b) for accommodating the two ears of the puncture rod.

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