Sealing device for puncture outfit

Abstract

The utility model discloses a sealing device used for a puncture outfit, which comprises a base, an upper cover fixedly connected with the base and a sealing assembly arranged between the upper cover and the base, the sealing assembly comprises a first clamping ring, a second clamping ring, a second clamping ring and a third clamping ring, the first clamping ring is annular, and a first positioning assembly is arranged at one axial end of the first clamping ring; the second clamping ring is annular and is in positioning fit with the first positioning assembly, and a second positioning assembly is arranged at the end, close to the first clamping ring, of the second clamping ring; the sealing ring component is arranged between the first clamping ring and the second clamping ring, the sealing ring component comprises a limiting part, a positioning part and a sealing part which are sequentially arranged from the outer circumference to the inner circumference, a through hole allowing a puncture cone to penetrate through is formed in the middle of the sealing part, and elastic reinforcing layers are arranged on the two sides of the sealing part respectively. The sealing device for the puncture outfit is simple in structure and convenient to install.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical equipment, and particularly relates to a sealing device for a puncture device. BACKGROUND

[0002] The puncture device is a special surgical channel for surgical instruments to enter the human body. Figure 1 As shown in the figure, the puncture device comprises a puncture sleeve 100, a sealing device 200 and a puncture cone 300, and the sealing device comprises a base, an upper cover fixedly connected with the base and a sealing assembly arranged between the base and the upper cover.

[0003] Chinese patent CN 103263288A discloses a multifunctional outer sealing device special for a medical surgical puncture device, wherein the support sheet assembly of the sealing assembly is arranged separately from the sealing gasket assembly, and the sealing gasket assembly is not provided with a positioning structure on both sides of the fixing member. When being installed, the support sheet assembly and the sealing gasket assembly need to be sequentially installed on the two fixing members, and then are placed into the upper pressing cover and the lower pressing cover to be buckled or ultrasonic wave pressed, wherein the support sheet assembly is elastic, and the assembly is inconvenient to operate. CONTENT OF THE UTILITY MODEL

[0004] Based on the above problems, the utility model aims to provide a sealing device for a puncture device, which is simple in structure and convenient to install.

[0005] In order to overcome the defects of the prior art, the utility model provides the technical scheme:

[0006] The sealing device for the puncture device comprises a base, an upper cover fixedly connected with the base and a sealing assembly arranged between the upper cover and the base, and the sealing assembly comprises:

[0007] A first clamping ring in the shape of a ring, and a first positioning assembly arranged at an axial end of the first clamping ring;

[0008] A second clamping ring in the shape of a ring and positioned and matched with the first positioning assembly, and a second positioning assembly arranged at an end of the second clamping ring close to the first clamping ring;

[0009] A sealing ring part arranged between the first clamping ring and the second clamping ring, and comprising a limiting part, a positioning part and a sealing part arranged in sequence from the outer periphery to the inner periphery, the positioning part is positioned and matched with the first positioning assembly and the second positioning assembly, a through hole for the puncture cone to pass through is arranged in the middle of the sealing part, and elastic reinforcing layers are arranged on both sides of the sealing part.

[0010] In one of the embodiments, the first positioning assembly comprises at least two first positioning columns and at least two second positioning columns arranged between adjacent two first positioning columns.

[0011] The second positioning assembly comprises at least two third positioning columns;

[0012] The second collar is provided with at least two first positioning holes matched with the at least two first positioning columns and at least two second positioning holes matched with the at least two second positioning columns;

[0013] The positioning part is provided with at least two third positioning holes matched with the at least two first positioning columns, at least two fourth positioning holes matched with the at least two second positioning columns and at least two fifth positioning holes matched with the at least two third positioning columns.

[0014] In one of the embodiments, the first positioning column is a square column, and the second and third positioning columns are circular columns.

[0015] In one of the embodiments, the end of the first positioning column is provided with a clamping hook.

[0016] In one of the embodiments, the elastic reinforcing layer is a spandex cloth.

[0017] In one of the embodiments, the base is provided with a first positioning ring, the upper cover is provided with a second positioning ring, the limiting part is provided with a first annular groove matched with the first positioning ring on the side close to the base and a second annular groove matched with the second positioning ring on the side close to the upper cover.

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] 1. The integrated sealing ring part is arranged, cooperates with the puncture cone, can guarantee the sealing performance, and is positioned with the first collar and the second collar, so that the installation cooperation between the sealing assembly and the upper cover and the base is facilitated, and the installation efficiency is improved.

[0020] 2. The positioning column structure matched with the sealing ring part is arranged on the first collar and the second collar, so that the installation and positioning of the sealing ring part and the first collar and the second collar are facilitated, and the installation efficiency is improved.

[0021] 3. The elastic reinforcing layers are respectively fixed on the two sides of the sealing part, so that the wear resistance and the sealing performance of the sealing ring part are improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained according to these drawings without paying the creative labor.

[0023] Figure 1 This is a schematic diagram of the puncture device.

[0024] Figure 2 This is a disassembled structural diagram of an embodiment of the sealing device for a puncture instrument according to the present invention;

[0025] Figure 3 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the first retaining ring in an embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the second retaining ring in an embodiment of this utility model;

[0028] Figure 6 This is a schematic diagram of the sealing ring component in an embodiment of the present invention;

[0029] in:

[0030] 100. Puncture cannula; 200. Sealing device; 300. Puncture cone;

[0031] 1. Base; 1-1. First positioning ring;

[0032] 2. Top cover;

[0033] 3. First retaining ring; 3-1. First positioning post; 3-2. Second positioning post;

[0034] 4. Second retaining ring; 4-1. First positioning hole; 4-2. Second positioning hole; 4-3. Third positioning pin;

[0035] 5. Sealing ring component; 5-1. Limiting part; 5-1a. Second annular groove; 5-2. Positioning part; 5-2a. Third positioning hole; 5-2b. Fourth positioning hole; 5-2c. Fifth positioning hole; 5-3. Sealing part; 5-3a. Through hole; 5-4. Elastic reinforcing layer. Detailed Implementation

[0036] The above solution will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrating the present invention and are not intended to limit the scope of the present invention. The implementation conditions used in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0037] See Figure 2 and Figure 3 The diagram below is a structural schematic of Embodiment 1 of the present invention, which provides a sealing device for a puncture device, including a base 1, an upper cover 2 fixedly connected to the base 1, and a sealing component disposed between the upper cover 2 and the base 1.

[0038] The sealing assembly includes a second retaining ring 4, a sealing ring component 5, and a first retaining ring 3, which are assembled in sequence.

[0039] like Figure 4 As shown, the first retaining ring 3 is annular, and a first positioning component is provided at one axial end of the first retaining ring 3. The first positioning component includes at least two first positioning posts 3-1 and at least two second positioning posts 3-2 disposed between two adjacent first positioning posts 3-1. In this example, four first positioning posts 3-1 are provided on the first retaining ring 3 at uniform intervals along the circumference, and two second positioning posts 3-2 are disposed between two adjacent first positioning posts 3-1. It should be understood that in other embodiments, more first positioning posts 3-1 and second positioning posts 3-2 can be provided as needed, and this utility model does not impose any limitations.

[0040] like Figure 5 As shown, the second retaining ring 4 is annular and engages with the first positioning component. A second positioning component is located at one end of the second retaining ring 4 near the first retaining ring 3. The second positioning component includes at least two third positioning posts 4-3. In this example, there are four third positioning posts 4-3, evenly spaced along the circumference of the second retaining ring 4. The second retaining ring 4 has four first positioning holes 4-1 that match the four first positioning posts 3-1 and eight second positioning holes 4-2 that match the eight second positioning posts 3-2. The third positioning posts 4-3 are positioned between adjacent second positioning holes 4-2.

[0041] like Figure 6 As shown, the sealing ring component 5 includes a limiting part 5-1, a positioning part 5-2, and a sealing part 5-3 arranged sequentially from the outer periphery to the inner periphery. The positioning part 5-2 is positioned and cooperates with the first positioning component and the second positioning component. A through hole 5-3a for the piercing cone 300 to pass through is provided in the middle of the sealing part 5-3. Elastic reinforcing layers 5-4 are provided on both sides of the sealing part 5-3. The provision of elastic reinforcing layers 5-4 can improve the wear resistance and sealing performance of the sealing ring component 5, thereby eliminating the need for other support structures and simplifying the structure.

[0042] Preferably, the elastic reinforcing layer 5-4 is made of spandex fabric and is fixed to both sides of the sealing part 5-3 by molding.

[0043] To facilitate the positioning and engagement of the sealing ring component 5 with the first positioning assembly and the second positioning assembly, the positioning part 5-2 is provided with four third positioning holes 5-2a that match the four first positioning posts 3-1, eight fourth positioning holes 5-2b that match the eight second positioning posts 3-2, and four fifth positioning holes 5-2c that match the four third positioning posts 4-3, wherein the fifth positioning holes 5-2c are arranged between two adjacent fourth positioning holes 5-2b.

[0044] In order to realize the installation and cooperation of the sealing assembly with the upper cover 2 and the base 1, the first positioning ring 1-1 is arranged on the base 1, the second positioning ring is arranged on the upper cover 2, the first annular groove matched with the first positioning ring 1-1 is arranged on the side of the limiting part 5-1 close to the base 1, and the second annular groove 5-1a matched with the second positioning ring is arranged on the side close to the upper cover 2.

[0045] In the example, the first positioning column 3-1 is a square column, and the second positioning column 3-2 and the third positioning column 4-3 are circular columns; the first positioning column 3-1 is arranged as a square column, so that the identification and positioning among the components are facilitated, and the assembly efficiency is improved.

[0046] In order to facilitate the fixed cooperation between the first clamping ring 3 and the second clamping ring 4, the clamping hook is arranged on the end of the first positioning column 3-1, and the first clamping ring 3 can be clamped on the second clamping ring 4.

[0047] During the assembly, the first positioning column 3-1 is sequentially arranged through the third positioning hole 5-2a and the first positioning hole 4-1, the second positioning column 3-2 is sequentially arranged through the fourth positioning hole 5-2b and the second positioning hole 4-2, and the third positioning column 4-3 is arranged through the fifth positioning hole 5-2c, so as to realize the sequential assembly of the second clamping ring 4, the sealing ring part 5 and the first clamping ring 3, and realize the fixed positioning among the components through the cooperation of the clamping hook on the first positioning column 3-1 and the second clamping ring 4.

[0048] In summary, the sealing device has simple structure, convenient installation and good sealing performance.

[0049] The above examples are only for illustrating the technical concept and characteristics of the utility model, and the purpose is to enable the person skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model. Any equivalent transformation or modification according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. A sealing device for a puncture device, comprising a base, an upper cover fixedly connected with the base, and a sealing assembly arranged between the upper cover and the base, characterized in that, The sealing assembly comprises: a first collar in the shape of a ring, one end of the first collar being provided with a first positioning assembly; a second collar in the shape of a ring and positioned in cooperation with the first positioning assembly, one end of the second collar being provided with a second positioning assembly; a sealing ring component arranged between the first collar and the second collar, the sealing ring component comprising a limiting portion, a positioning portion and a sealing portion arranged in sequence from the outer periphery to the inner periphery, the positioning portion being positioned in cooperation with the first positioning assembly and the second positioning assembly, the sealing portion being provided with a through hole in the middle for a puncture cone to pass through, and both sides of the sealing portion being respectively provided with an elastic reinforcing layer.

2. The sealing device for a puncture device according to claim 1, characterized by: The first positioning assembly comprises at least two first positioning columns and at least two second positioning columns arranged between adjacent two first positioning columns; The second positioning assembly comprises at least two third positioning columns; The second collar is provided with at least two first positioning holes matched with the at least two first positioning columns and at least two second positioning holes matched with the at least two second positioning columns; The positioning portion is provided with at least two third positioning holes matched with the at least two first positioning columns, at least two fourth positioning holes matched with the at least two second positioning columns and at least two fifth positioning holes matched with the at least two third positioning columns.

3. The sealing device for a puncture device of claim 2, wherein: The first positioning column is a square column, and the second positioning column and the third positioning column are circular columns.

4. The sealing device for a puncture device according to claim 3, characterized in that: The end of the first positioning column is provided with a hook.

5. The sealing device for a puncture device of claim 1, wherein: The elastic reinforcing layer is a spandex cloth.

6. The sealing device for a puncture device according to any one of claims 1 to 5, characterized in that: The base is provided with a first positioning ring, the upper cover is provided with a second positioning ring, one side of the limiting portion close to the base is provided with a first annular groove matched with the first positioning ring, and one side of the limiting portion close to the upper cover is provided with a second annular groove matched with the second positioning ring.

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