Puncture outfit structure with inside and outside separated in sealing mode

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to an internal and external sealing separation type puncture outfit. The utility model aims at providing a puncture outfit convenient for taking out surgical foreign matters in the prior art, and provides a puncture outfit capable of realizing separation of an inner sealing structure and an outer sealing structure through a turncap, the puncture outfit comprises a sleeve, an air valve component connected to one side of the sleeve and a sealing cap body, and the sealing cap body comprises a shell and an outer sealing structure connected in the shell. The inner sealing assembly is fixed to the sleeve, and an annular clamping groove is formed in the upper end of the sleeve. The shell comprises a circular bayonet used for being detachably connected with the sleeve in a sealed mode, and the circular bayonet is matched with the annular clamping groove and used for achieving screwing fixing and disassembling of the shell. The inner sealing structure and the outer sealing structure can be quickly separated by unscrewing the shell, so that surgical foreign matters can be conveniently and directly taken out from the inner sealing structure by surgical instruments.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a puncture device structure with inner and outer sealed separations. 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 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. Because the lower sealing structure may leak due to the movement of the instrument, the puncture device is generally also provided with an upper sealing structure to allow the instrument to pass through and maintain sealing when the instrument is working. During the operation, foreign matter such as cut tissue is often produced. At this time, the upper sealing structure needs to be disassembled to facilitate the removal of foreign matter.

[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 removal of the upper sealing structure to remove foreign matter, its two-stage sealing device components are connected by a horizontal and vertical locking block and locking groove matching structure, which may be inconvenient to disassemble during surgery due to wetness and other reasons. Summary of the invention

[0005] The utility model aims to solve the above problems and provides a trocar whose inner and outer sealing structures are connected by a rotating cap body.

[0006] The utility model provides a puncture device structure with separated inner and outer seals, including a sleeve, an air valve assembly connected to one side of the sleeve, and a sealing cap body, wherein the sealing cap body includes a housing and an outer sealing structure connected to the housing, an opening for accommodating the insertion of a puncture needle rod is provided on the upper part of the housing, an annular mounting groove is fixedly provided on the top of the sleeve, an inner sealing assembly is detachably installed in the annular mounting groove, the inner sealing assembly is sealed and connected to the annular mounting groove, and the height of the upper end of the inner sealing assembly in the vertical direction is lower than the height of the upper end of the annular mounting groove in the vertical direction; the housing includes a circular bayonet for realizing a detachable sealing connection with the sleeve, and the circular bayonet cooperates with the annular bayonet to realize the effect of screwing the housing to the sleeve. The inner sealing assembly is installed on the air valve assembly to prevent air leakage and maintain pneumoperitoneum during inflation.

[0007] Preferably, the inner sealing assembly comprises an annular inner sealing base fixed on the sleeve, and the annular inner sealing base has a plurality of small column grooves evenly distributed around the circumference.

[0008] Furthermore, the inner sealing component also includes an integrally formed inner annular base, a cross sealing bottom, and a cylindrical body connected to the cross sealing bottom for sealing; the cylindrical body has four convex ridges symmetrically distributed circumferentially, the edges of the convex ridges at the bottom of the cylindrical body correspond to the skirt edge connected to the cross sealing bottom, and the inner annular base is evenly provided with small column grooves and mounting holes of the same diameter in the circumferential direction. The inner sealing component also includes an inner sealing upper cover, which is provided with slender convex columns evenly distributed circumferentially, and the slender convex columns penetrate the mounting holes of the inner annular base and are inserted into the small column grooves to fix the cylindrical body so that it is not easy to fall out.

[0009] Furthermore, the annular inner sealing base has several large column grooves evenly distributed circumferentially, and corresponding elastic large protrusions evenly distributed circumferentially below the inner annular base are elastically embedded in the large column grooves to further fix the cylinder.

[0010] Preferably, the outer sealing structure is sealed and connected to the shell via an annular wave sealing ring. Specifically, the inner part of the annular wave sealing ring is centrally clamped and fixed by the outer sealing structure, and its outer shell wraps the outer sealing structure and forms a tight sealing fit with the shell on all sides.

[0011] Furthermore, a groove is provided on the outer periphery of the wave sealing ring, and a first convex ring is provided on the top of the shell body. The first convex ring is elastically embedded in the groove to fix the wave sealing ring.

[0012] Preferably, the external sealing structure as described above 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 has a first annular base pressed on the annular outer sealing lower gasket; the annular sealing spacer ring is pressed on the first annular base, the umbrella-shaped supporting portion is provided with a second annular base with sealing sheets with sealing holes and a first hollow card groove distributed in an alternating manner, and the second annular base is pressed on the annular sealing spacer ring.

[0013] Preferably, the first annular base is evenly distributed with sealing holes in the circumference, and the annular outer sealing gasket and the annular sealing spacer are evenly and alternately provided with sealing holes and sealing columns, and the sealing columns of the annular outer sealing gasket and the annular sealing spacer alternately pass through the sealing holes of the first annular base and are inserted into each other's sealing holes correspondingly.

[0014] Furthermore, the inner circumference of the wave sealing ring is staggered with mounting plates with fixing holes and second hollow slots, and the mounting plates are pressed onto the second annular base; the outer sealing cover is composed of a base with a sealing column and a protrusion and a second convex ring, the base sealing column passes through the fixing hole and is inserted into the sealing hole of the second annular base, the protrusion passes through the second hollow slot and is embedded in the first hollow slot, and the second convex ring is inserted into the internal space surrounded by the second annular base.

[0015] Compared with the existing technology, the advantages of the utility model are:

[0016] 1. The outer sealing structure of the sealing cap provided by the utility model is integrated in the rotating cap body, with a large friction force surface and easy disassembly.

[0017] 2. The sealing component in the sealing cap of the puncture device provided by the present invention is embedded in the sleeve of the puncture device, and the structure is more stable and not easily brought out by the device or its connecting parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a preliminary exploded diagram of the utility model;

[0020] Figure 3 Based Figure 1 A cross-sectional view of

[0021] Figure 4 It is a partial structure explosion diagram of the utility model;

[0022] Figure 5 It is a partial structure explosion diagram of the utility model;

[0023] Figure 6 This is a bottom view of the housing of the utility model;

[0024] Figure 7It is a top view of part of the structure of the utility model;

[0025] Figure 8 It is a partial structural schematic diagram of the utility model.

[0026] In the figure: sleeve 1, air valve assembly 2, sealing cap body 3, puncture needle rod 4, housing 31, annular wave sealing ring 32, outer sealing structure a, inner sealing assembly b, umbrella-shaped sealing pad a1, umbrella-shaped support part a2, annular outer sealing lower gasket a3, annular sealing spacer ring a4, annular groove 1a, annular inner sealing base 1b, small column groove 1b1, large column groove 1b2, first convex ring 31b, groove 32a, mounting plate 32 b, fixing hole 32b1, second hollow groove 32c, first annular base a11, second annular base a21, sealing sheet a211, first hollow groove a212, base a51, second convex ring a52, sealing column a511, protrusion a512, inner annular base b1, cross sealing bottom b2, cylinder b3, inner sealing upper cover b4, mounting hole b11, elastic large protrusion b12, slender protrusion b41. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] The utility model is a puncture device with an inner and outer double-layer sealing structure. Figure 1-3 As shown, the puncture device includes a sleeve 1, an air valve assembly 2 connected to one side of the sleeve 1 and a sealing cap body 3, the sealing cap body 3 includes a shell 31 and an outer sealing structure a connected to the shell 31, the upper part of the shell 31 is provided with an opening for accommodating the insertion of the puncture needle rod 4, the top of the sleeve 1 is fixedly provided with an installation annular groove 1a, the shell 31 is provided with a circular bayonet 31a matching the annular groove 1a of the sleeve 1, and an inner sealing assembly b is detachably installed in the sleeve 1, and the inner sealing assembly b is sealed and connected to the installation annular groove 1a, and the upper end of the inner sealing assembly b is lower than the upper end of the installation annular groove 1a in the vertical direction. The lower end is higher than the upper end of the air valve assembly 2 in the vertical direction.

[0029] When the utility model is used, the shell 31 is tightened on the sleeve 1, the upper and lower sealing structures are connected and a hollow sealing structure is generated. After the puncture device is punctured, the air valve component 2 takes in air to establish pneumoperitoneum. At this time, the sealing component b located in the sleeve with a horizontal height higher than the air valve component 2 can prevent gas from overflowing and maintain pneumoperitoneum.

[0030] After the instrument is introduced from the housing 31 during surgery, the sealing component b will not be able to maintain the sealing effect due to the movement of the instrument. At this time, the unique structure of the outer sealing structure a can tightly seal around the instrument to prevent further air leakage, thereby continuing to maintain pneumoperitoneum.

[0031] However, during the operation, foreign objects often need to be removed. In this case, the outer sealing structure a can be separated by unscrewing the shell 31, and the surgical instrument can directly remove the foreign objects from the inner sealing component b, solving the problem of difficulty in removing foreign objects caused by the outer sealing structure a.

[0032] Preferably, the inner sealing assembly b comprises an annular inner sealing base 1b connected to the sleeve 1, and the annular inner sealing base 1b has a plurality of small column grooves 1b1 evenly distributed around the circumference for installing a sealing body having a sealing function.

[0033] As a preference, Figure 4 , 7 As shown in FIG. 8 , the specific structure of the sealing body of the inner seal is composed of an integrally formed inner annular base b1, a cross sealing bottom b2, and a cylindrical body b3 connected to the cross sealing bottom b2; wherein the cylindrical body b3 is responsible for the specific sealing effect; there are four convex ridges b31 symmetrically distributed in the circumferential direction in the cylindrical body b3, and the edges of the convex ridges b31 at the bottom of the cylindrical body b3 correspond to the skirt edge connected to the cross sealing bottom b2, and the instrument enters to make the convex ridges b31 open outward to open the cross sealing bottom b2;

[0034] As a preferred installation method, the inner annular base b1 is evenly arranged with small column grooves 1b1 and mounting holes b11 of the same diameter in the circumferential direction. The inner sealing assembly b also includes an inner sealing upper cover b4. The inner sealing upper cover b4 is provided with slender bosses b41 evenly distributed in the circumferential direction. The slender bosses b41 pass through the mounting holes b11 of the inner annular base b1 and are inserted into the small column grooves 1b1.

[0035] In order to strengthen the connection, the annular inner sealing base 1b is further provided with several large column grooves 1b2 evenly distributed circumferentially, and the corresponding elastic large protrusions b12 evenly distributed circumferentially below the inner annular base b1 are elastically embedded in the large column grooves 1b2. Such a structure further stabilizes the main sealing structure to prevent the foreign matter to be removed from being brought out.

[0036] like Figure 3 As shown, since there is no fixed structure on the side of the shell 31, and the outer sealing structure a is not sealed with the outer shape of the shell 31, and there is no connection structure with the top of the shell 31, an annular wave sealing ring 32 is provided to fix the outer sealing structure a to the shell 31. The specific method adopted is: the annular wave sealing ring 32 is clamped and fixed by the outer sealing structure a and wraps the outer sealing structure a, and forms a tight seal with the shell 31 on all sides.

[0037] Further, such as Figure 5 and Figure 6 As shown, a groove 32a is provided on the outer periphery of the wave sealing ring 32, and a first convex ring 31b is provided on the top of the shell 31. The first convex ring 31b is elastically embedded in the groove 32a, so that the outer sealing structure a is fixed on the shell 31 through the annular wave sealing ring 32.

[0038] The outer sealing structure a is specifically as follows: Figure 5 As shown, it includes an umbrella-shaped sealing gasket a1, an umbrella-shaped supporting portion a2, an annular outer sealing lower gasket a3 and an annular sealing spacer ring a4. The umbrella-shaped sealing gasket a1 has a first annular base a11, which is pressed on the annular outer sealing lower gasket a3 to play the role of instrument sealing; the annular sealing spacer ring a4 is pressed on the first annular base a11, and the umbrella-shaped supporting portion a2 is provided with a second annular base a21 with staggered sealing sheets a211 with sealing holes and a first hollow card groove a212, and the second annular base a21 is pressed on the annular sealing spacer ring a4, that is, the umbrella-shaped supporting portion a2 is located above the umbrella-shaped sealing gasket a1, which is used for buffering and reducing the probability of the umbrella-shaped sealing gasket a1 being punctured.

[0039] The first annular base a11 is evenly distributed with sealing holes in the circumference, and the annular outer sealing gasket a3 and the annular sealing spacer ring a4 are evenly and alternately provided with sealing holes and sealing columns. The sealing columns of the annular outer sealing gasket a3 and the annular sealing spacer ring a4 alternately pass through the sealing holes of the first annular base a11 and are inserted into each other's sealing holes correspondingly.

[0040] The outer sealing structure a also includes an outer sealing cover a5 for final fixation. The inner circumference of the wave sealing ring 32 is staggered with mounting plates 32b with fixing holes 32b1 and second hollow card grooves 32c, and the mounting plates 32b are pressed on the second annular base a21; the outer sealing cover a5 is composed of a base a51 and a second convex ring a52 with a sealing column a511 and a protrusion a512. The sealing column a511 of the base a51 passes through the fixing hole 32b1 and is inserted into the sealing hole of the second annular base a21, the protrusion a512 passes through the second hollow card groove 32c and is embedded in the first hollow card groove a212, and the second convex ring a52 is inserted into the internal space surrounded by the second annular base a21. In the above manner, the wave sealing ring 32 is clamped and fixed by the outer sealing structure a to form a firm connection structure.

[0041] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0042] Although the present invention uses more sleeve 1, air valve assembly 2, sealing cap body 3, puncture needle rod 4, shell 31, annular wave sealing ring 32, outer sealing structure a, inner sealing assembly b, umbrella-shaped sealing pad a1, umbrella-shaped supporting part a2, annular outer sealing lower gasket a3, annular sealing spacer ring a4, annular groove 1a, annular inner sealing base 1b, small column groove 1b1, large column groove 1b2, first convex ring 31b, groove 32a, mounting plate 32b, fixing hole 3 2b1, second hollow groove 32c, first annular base a11, second annular base a21, sealing sheet a211, first hollow groove a212, base a51, second convex ring a52, sealing column a511, convex block a512, inner annular base b1, cross sealing bottom b2, cylinder b3, inner sealing upper cover b4, mounting hole b11, elastic large convex column b12, slender convex column b41 and other terms, 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 puncture device structure with inner and outer sealed separation, comprising a sleeve (1), an air valve assembly (2) connected to one side of the sleeve (1) and a sealing cap body (3), wherein the sealing cap body (3) comprises a shell (31) and an outer sealing structure (a) connected to the shell (31), and an opening is provided at the upper part of the shell (31) for accommodating the insertion of a puncture needle rod (4), characterized in that: The top of the sleeve (1) is fixedly provided with an annular mounting groove (1a), and an inner sealing component (b) is detachably mounted in the annular mounting groove (1a). The inner sealing component (b) is sealingly connected to the annular mounting groove (1a), and the height of the upper end of the inner sealing component (b) in the vertical direction is lower than the height of the upper end of the annular mounting groove (1a) in the vertical direction, and the lower end thereof is higher than the height of the upper end of the air valve component (2) in the vertical direction; the housing (31) comprises a circular bayonet (31a) for realizing a detachable sealing connection with the sleeve (1), and the circular bayonet (31a) cooperates with the annular bayonet (1a).

2. A trocar structure with inner and outer sealed separation as claimed in claim 1, characterized in that: The inner sealing component (b) comprises an annular inner sealing base (1b) fixed on the connecting sleeve (1), and the annular inner sealing base (1b) has a plurality of small column grooves (1b1) evenly distributed in the circumferential direction.

3. A trocar structure with inner and outer sealed separation as claimed in claim 2, characterized in that: The inner sealing component (b) also includes an integrally formed inner annular base (b1), a cross sealing bottom (b2), and a cylindrical body (b3) connected to the cross sealing bottom (b2); the cylindrical body (b3) has four convex ridges (b31) symmetrically distributed in the circumferential direction, and the edges of the convex ridges (b31) at the bottom of the cylindrical body (b3) correspond to the skirt edge connected to the cross sealing bottom (b2); the inner annular base (b1) is evenly provided with small column grooves (1b1) and mounting holes (b11) of the same diameter in the circumferential direction.

4. A trocar structure with inner and outer sealed separation as claimed in claim 3, characterized in that: The inner sealing assembly (b) also includes an inner sealing upper cover (b4), which is provided with slender protrusions (b41) evenly distributed in the circumferential direction, and the slender protrusions (b41) pass through the mounting holes (b11) of the inner annular base (b1) and are inserted into the small column grooves (1b1).

5. The trocar structure with inner and outer sealed separation as claimed in claim 3, characterized in that: The annular inner sealing base (1b) also has a plurality of large column grooves (1b2) evenly distributed in the circumferential direction, and corresponding elastic large protruding columns (b12) evenly distributed in the circumferential direction below the inner annular base (b1) are elastically embedded in the large column grooves (1b2).

6. The trocar structure with inner and outer sealed separation as claimed in claim 1, characterized in that: The outer sealing structure (a) is fixed to the housing (31) via an annular wave sealing ring (32); the annular wave sealing ring (32) is clamped and fixed by the outer sealing structure (a) and wraps the outer sealing structure (a), and forms a tight sealing fit with the housing (31) on all sides.

7. The trocar structure with inner and outer sealed separation as claimed in claim 6, characterized in that: The outer periphery of the wave seal ring (32) is provided with a groove (32a), and the top end of the housing (31) is provided with a first convex ring (31b), and the first convex ring (31b) is elastically embedded in the groove (32a).

8. The trocar structure with inner and outer sealed separation as claimed in claim 1, characterized in that: The outer sealing structure (a) comprises an umbrella-shaped sealing gasket (a1), an umbrella-shaped supporting part (a2), an annular outer sealing lower gasket (a3) ​​and an annular sealing spacer ring (a4); the umbrella-shaped sealing gasket (a1) has a first annular base (a11) which is pressed onto the annular outer sealing lower gasket (a3); the annular sealing spacer ring (a4) is pressed onto the first annular base (a11); the umbrella-shaped supporting part (a2) is provided with a second annular base (a21) having sealing sheets (a211) with sealing holes and a first hollow groove (a212) which are staggeredly distributed; the second annular base (a21) is pressed onto the annular sealing spacer ring (a4).

9. The trocar structure with inner and outer sealed separation as claimed in claim 8, characterized in that: The first annular base (a11) is evenly distributed with sealing holes in the circumference, and the annular outer sealing gasket (a3) ​​and the annular sealing spacer ring (a4) are evenly and alternately provided with sealing holes and sealing columns. The sealing columns of the annular outer sealing gasket (a3) ​​and the annular sealing spacer ring (a4) alternately pass through the sealing holes of the first annular base (a11) and are inserted into each other's sealing holes correspondingly.

10. The trocar structure with inner and outer sealed separation as claimed in claim 5, characterized in that: The outer sealing structure (a) also includes an outer sealing gland (a5), and the inner circumference of the wave sealing ring (32) is staggered with mounting plates (32b) with fixing holes (32b1) and second hollow grooves (32c), and the mounting plates (32b) are pressed on the second annular base (a21); the outer sealing gland (a5) is composed of a base (a51) with a sealing column (a511) and a convex block (a512), and a second convex ring (a52), the sealing column (a511) of the base (a51) passes through the fixing hole (32b1) and is inserted into the sealing hole of the second annular base (a21), the convex block (a512) passes through the second hollow groove (32c) and is embedded in the first hollow groove (a212), and the second convex ring (a52) is inserted into the internal space surrounded by the second annular base (a21).

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