Sealing device of puncture outfit

Abstract

The utility model discloses a sealing device of a puncture outfit, and a sealing assembly comprises a first clamping ring, a second clamping ring, a first positioning assembly, a second positioning assembly and a second 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 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 the puncture cone to penetrate through is formed in the middle of the sealing part, and the positioning part is in positioning fit with the first positioning assembly and the second positioning assembly; the supporting component is arranged between the second clamping ring and the sealing ring component and comprises a supporting ring and a plurality of valves arranged on the side, close to the sealing ring component, of the supporting ring, the valves extend to the sealing part and are attached to the sealing part, and the supporting ring is in positioning fit with the first positioning assembly and the second positioning assembly. The sealing device of the puncture outfit is simple in structure and convenient to install.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, and specifically relates to a sealing device for a puncture instrument. Background Technology

[0002] A trocar is a specialized surgical channel through which surgical instruments enter the human body, such as... Figure 1 As shown, the puncture device includes a puncture cannula 100, a sealing device 200, and a puncture cone 300. The sealing device includes a base, a top cover fixedly connected to the base, and a sealing assembly disposed between the base and the top cover.

[0003] Chinese patent CN103263288A discloses a multifunctional external sealing device specifically for medical surgical puncture instruments. The support plate assembly and sealing gasket assembly of the sealing component are set separately, and the sealing gasket assembly has no positioning structure with the fixing parts on both sides. During installation, the support plate assembly and sealing gasket assembly need to be installed on the two fixing parts in sequence, and then the upper and lower pressure covers are inserted for snap-fit ​​connection or ultrasonic pressing. The support plate assembly is elastic, which makes the assembly operation inconvenient. Utility Model Content

[0004] Based on the above problems, the purpose of this utility model is to provide a sealing device for a puncture device, which has a simple structure and is easy to install.

[0005] To overcome the shortcomings of the existing technology, the technical solution provided by this utility model is as follows:

[0006] A sealing device for a puncture instrument includes a base, a top cover fixedly connected to the base, and a sealing assembly movably disposed between the top cover and the base, the sealing assembly comprising:

[0007] The first retaining ring is annular in shape, and a first positioning component is provided at one axial end of the first retaining ring.

[0008] The second retaining ring is annular and is positioned and engaged with the first positioning component. The second retaining ring is provided with the second positioning component at one end near the first retaining ring.

[0009] A sealing ring component, comprising a limiting part, a positioning part, and a sealing part arranged sequentially from the outer periphery to the inner periphery, wherein the sealing part has a through hole in the middle for the puncture cone to pass through, and the positioning part is positioned and engaged with the first positioning component and the second positioning component;

[0010] A support component, disposed between the second retaining ring and the sealing ring component, includes a support ring and a plurality of valves disposed on the side of the support ring near the sealing ring component. The valves extend to the sealing portion and fit against the sealing portion. The support ring is positioned and engaged with the first positioning component and the second positioning component.

[0011] In one embodiment, the first positioning component includes at least two first positioning posts and at least two second positioning posts disposed between two adjacent first positioning posts;

[0012] The second positioning component includes at least two third positioning posts;

[0013] The second retaining ring is provided with at least two first positioning holes that match the at least two first positioning posts and at least two second positioning holes that match the at least two second positioning posts;

[0014] The positioning part is provided with at least two third positioning holes that match the at least two first positioning posts, at least two fourth positioning holes that match the at least two second positioning posts, and at least two fifth positioning holes that match the at least two third positioning posts.

[0015] The support ring is provided with at least two sixth positioning holes that match the at least two first positioning posts, at least two seventh positioning holes that match the at least two second positioning posts, and at least two eighth positioning holes that match the at least two third positioning posts.

[0016] In one embodiment, the first positioning post is a square post, and the second and third positioning posts are circular posts.

[0017] In one embodiment, the end of the first positioning post is provided with a hook.

[0018] In one embodiment, the sealing portion is provided with a plurality of reinforcing protrusions arranged circumferentially along the through hole on both sides.

[0019] In one embodiment, the plurality of reinforcing protrusions are arranged at uniform intervals along the circumference of the through hole.

[0020] In one embodiment, the reinforcing protrusion extends outward from the through hole.

[0021] In one embodiment, the base is provided with a first positioning ring, the top cover is provided with a second positioning ring, and the limiting part is provided with a first annular groove matching the first positioning ring on the side near the base and a second annular groove matching the second positioning ring on the side near the top cover.

[0022] Compared with the prior art, the advantages of this utility model are:

[0023] 1. An integrated sealing ring component is provided, which cooperates with the puncture cone to ensure sealing performance. At the same time, the sealing ring component is positioned with the first retaining ring and the second retaining ring, which facilitates the installation and cooperation between the sealing component and the top cover and the base, and improves installation efficiency.

[0024] 2. Positioning post structures that mate with the sealing ring components are provided on the first and second retaining rings to facilitate the installation and positioning of the sealing ring components with the first and second retaining rings, thereby improving installation efficiency;

[0025] 3. A support component is provided between the second retaining ring and the sealing ring component. The cooperation between the support component and the sealing ring component can improve the sealing performance.

[0026] 4. Multiple reinforcing protrusions are provided on both sides of the sealing part along the circumference of the through hole, which can improve the structural strength and wear resistance of the sealing ring component and further improve the sealing performance. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the puncture device.

[0029] Figure 2 This is a disassembly diagram of an embodiment of the sealing device for a puncture device according to the present invention;

[0030] Figure 3 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the first retaining ring in an embodiment of this utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the second retaining ring in an embodiment of this utility model;

[0033] Figure 6 This is one of the structural schematic diagrams of the sealing ring component in the embodiments of this utility model;

[0034] Figure 7 This is the second structural schematic diagram of the sealing ring component in the embodiments of this utility model;

[0035] Figure 8 This is a schematic diagram of the supporting component in an embodiment of the present utility model;

[0036] in:

[0037] 100. Puncture cannula; 200. Sealing device; 300. Puncture cone;

[0038] 1. Base; 1-1. First positioning ring;

[0039] 2. Top cover;

[0040] 3. First retaining ring; 3-1. First positioning post; 3-2. Second positioning post;

[0041] 4. Second retaining ring; 4-1. First positioning hole; 4-2. Second positioning hole; 4-3. Third positioning pin;

[0042] 5. Sealing ring component; 5-1. Limiting part; 5-1a. First annular groove; 5-1b. 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; 5-3b. Reinforcing protrusion;

[0043] 6. Supporting components; 6-1. Supporting ring; 6-1a. Sixth positioning hole; 6-1b. Seventh positioning hole; 6-1c. Eighth positioning hole; 6-2. Valve. Detailed Implementation

[0044] 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.

[0045] See Figure 2 and Figure 3 The above is a structural schematic diagram of an embodiment of the present utility model, 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.

[0046] The sealing assembly includes a second retaining ring 4, a support component 6, a sealing ring component 5, and a first retaining ring 3, which are assembled in sequence.

[0047] 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.

[0048] like Figure 5As 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.

[0049] like Figure 6 and Figure 7 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. A through hole 5-3a for the piercing cone 300 to pass through is provided in the middle of the sealing part 5-3. The positioning part 5-2 is positioned and engaged with the first positioning component and the second positioning component.

[0050] Specifically, the positioning part 5-2 is provided with four third positioning holes 5-2a that match four first positioning posts 3-1, eight fourth positioning holes 5-2b that match eight second positioning posts 3-2, and four fifth positioning holes 5-2c that match four third positioning posts 4-3, wherein the fifth positioning holes 5-2c are arranged between two adjacent fourth positioning holes 5-2b.

[0051] like Figure 8 As shown, the support component 6 includes a support ring 6-1 and a plurality of valves 6-2 disposed on the side of the support ring 6-1 near the sealing ring component 5. The valves 6-2 are elastic and can extend to the sealing part 5-3 and fit into the sealing part 5-3. The sealing performance of the sealing assembly can be improved by the cooperation between the valves 6-2 and the sealing part 5-3. The support ring 6-1 is positioned and cooperated with the first positioning component and the second positioning component.

[0052] Specifically, the support ring 6-1 is provided with four sixth positioning holes 6-1a that match the four first positioning posts 3-1, eight seventh positioning holes 6-1b that match the eight second positioning posts 3-2, and four eighth positioning holes 6-1c that match the four third positioning posts 4-3, wherein the eighth positioning holes 6-1c are located between two adjacent seventh positioning holes 6-1b.

[0053] To further optimize the implementation effect of this utility model, multiple reinforcing protrusions 5-3b are provided on both sides of the sealing part 5-3, arranged at intervals along the circumference of the through hole. Preferably, the multiple reinforcing protrusions 5-3b are evenly spaced along the circumference of the through hole 5-3a, and the reinforcing protrusions 5-3b extend outward from the through hole 5-3a. The setting of reinforcing protrusions 5-3b can improve the wear resistance of the sealing ring component 5, thereby improving the sealing performance.

[0054] In order to achieve the installation and cooperation of the sealing component with the upper cover 2 and the base 1, a first positioning ring 1-1 is provided on the base 1, and a second positioning ring is provided on the upper cover 2. At the same time, a first annular groove 5-1a matching the first positioning ring 1-1 is provided on the side of the limiting part 5-1 near the base 1, and a second annular groove 5-1b matching the second positioning ring is provided on the side of the limiting part 5-1 near the upper cover 2.

[0055] In this example, the first positioning post 3-1 is a square post, while the second positioning post 3-2 and the third positioning post 4-3 are round posts. Setting the first positioning post 3-1 as a square post facilitates the identification and positioning of various components and improves assembly efficiency.

[0056] To facilitate the fixed engagement between the first retaining ring 3 and the second retaining ring 4, a hook is provided at the end of the first positioning post 3-1, which can secure the first retaining ring 3 to the second retaining ring 4.

[0057] During assembly, the first positioning pin 3-1 is passed through the third positioning hole 5-2a, the sixth positioning hole 6-1a and the first positioning hole 4-1 in sequence, and the second positioning pin 3-2 is passed through the fourth positioning hole 5-2b, the seventh positioning hole 6-1b and the second positioning hole 4-2 in sequence. At the same time, the third positioning pin 4-3 is passed through the eighth positioning hole 6-1c and the fifth positioning hole 5-2c in sequence, so as to realize the sequential assembly of the second retaining ring 4, the support component 6, the sealing ring component 5 and the first retaining ring 3. The fixed positioning between each component is achieved by the hook on the first positioning pin 3-1 cooperating with the second retaining ring 4.

[0058] In summary, this sealing device has a simple structure, is easy to install, and has good sealing performance.

[0059] The above examples are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A sealing device for a puncture instrument, comprising a base, a top cover fixedly connected to the base, and a sealing assembly disposed between the top cover and the base, characterized in that, The sealing assembly includes: The first retaining ring is annular in shape, and a first positioning component is provided at one axial end of the first retaining ring. The second retaining ring is annular and is positioned and engaged with the first positioning component. The second retaining ring is provided with the second positioning component at one end near the first retaining ring. A sealing ring component, comprising a limiting part, a positioning part, and a sealing part arranged sequentially from the outer periphery to the inner periphery, wherein the sealing part has a through hole in the middle for the puncture cone to pass through, and the positioning part is positioned and engaged with the first positioning component and the second positioning component; A support component, disposed between the second retaining ring and the sealing ring component, includes a support ring and a plurality of valves disposed on the side of the support ring near the sealing ring component. The valves extend to the sealing portion and fit against the sealing portion. The support ring is positioned and engaged with the first positioning component and the second positioning component.

2. The sealing device for the puncture device according to claim 1, characterized in that: The first positioning component includes at least two first positioning posts and at least two second positioning posts disposed between two adjacent first positioning posts; The second positioning component includes at least two third positioning posts; The second retaining ring is provided with at least two first positioning holes that match the at least two first positioning posts and at least two second positioning holes that match the at least two second positioning posts; The positioning part is provided with at least two third positioning holes that match the at least two first positioning posts, at least two fourth positioning holes that match the at least two second positioning posts, and at least two fifth positioning holes that match the at least two third positioning posts. The support ring is provided with at least two sixth positioning holes that match the at least two first positioning posts, at least two seventh positioning holes that match the at least two second positioning posts, and at least two eighth positioning holes that match the at least two third positioning posts.

3. The sealing device for the puncture device according to claim 2, characterized in that: The first positioning post is a square post, and the second and third positioning posts are round posts.

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

5. The sealing device for the puncture device according to claim 1, characterized in that: The sealing part is provided with multiple reinforcing protrusions on both sides arranged circumferentially along the through hole.

6. The sealing device for the puncture device according to claim 5, characterized in that: The plurality of reinforcing protrusions are evenly spaced along the circumference of the through hole.

7. The sealing device for the puncture device according to claim 6, characterized in that: The reinforcing protrusion extends outward from the through hole.

8. The sealing device for the puncture instrument according to any one of claims 1 to 7, characterized in that: The base is provided with a first positioning ring, the upper cover is provided with a second positioning ring, and the limiting part is provided with a first annular groove matching the first positioning ring on the side near the base and a second annular groove matching the second positioning ring on the side near the upper cover.

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