Sealing cap, puncture cannula and puncture device

Abstract

The present invention discloses a sealing cap, a puncture sleeve and a puncture device, wherein the puncture sleeve is applied with the puncture sleeve, and the sealing cap is applied with the puncture sleeve. The sealing cap comprises: a sealing cap body; a fixing frame, wherein the circumference of the fixing frame is installed in the sealing cap body through a plurality of elastic support members; and a hemispherical silicone member, wherein the hemispherical silicone member is arranged on the fixing frame. In the sealing cap of the present invention, the fixing frame adopts an elastic support member to float. Compared with the traditional structure in which floating is achieved by a wavy silicone ring, the elastic support member will not tear or wrinkle and cannot be reset, and has stronger working stability and reliability. Moreover, compared with the wavy silicone ring, the elastic support member is not only conducive to reducing production costs, but also can reduce installation requirements and improve production and assembly efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a sealing cap, a puncture cannula and a puncture device. Background Art

[0002] The puncture device mainly includes a puncture cone, a puncture cannula, and a sealing sleeve, wherein the sealing sleeve is detachably mounted on the upper end of the puncture cannula, and the puncture cone can be inserted through the sealing sleeve and the puncture cannula, and is also detachably connected to the sealing sleeve. The sealing sleeve mainly includes an upper cover, a bottom cover, a hemispherical silicone part, and a wavy silicone ring. The upper cover is fixed to the bottom cover, and the hemispherical silicone part is fixed between the upper cover and the bottom cover via the wavy silicone ring. A self-sealing perforation is provided in the center of the hemispherical silicone part, and the puncture cone can be inserted through the through hole of the upper cover into the self-sealing perforation and into the puncture cannula. This traditional structure has poor sealing performance, the wavy silicone ring is easy to tear, and in actual application, there are cases where the folds cannot be reset. At the same time, the cost is also high. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a sealing cap that can solve the shortcomings of the wavy silicone ring.

[0004] The present invention also provides a puncture cannula using the sealing cap.

[0005] And a puncture device using the puncture sleeve.

[0006] According to the first aspect of the present invention, the sealing cap includes: a sealing cap body; a fixing frame, the circumference of the fixing frame is installed in the sealing cap body through multiple elastic support members; and a hemispherical silicone member, the hemispherical silicone member is arranged on the fixing frame.

[0007] The sealing cap according to the embodiments of the present invention has at least the following beneficial effects: The fixing frame of the sealing cap of the present invention utilizes an elastic support member for floating. Compared to conventional structures that utilize a wavy silicone ring for floating, the elastic support member does not tear or wrinkle and cannot be reset, resulting in greater operational stability and reliability. Furthermore, compared to the wavy silicone ring, the elastic support member reduces production costs, simplifies installation requirements, and improves production and assembly efficiency.

[0008] According to some embodiments of the present invention, the sealing cap body is provided with:

[0009] An upper cover, wherein a central through hole is provided at the center of the upper cover;

[0010] The base has an outer wall, a supporting rib and a mounting sleeve, the outer wall is connected and fixed to the peripheral edge of the upper cover, the mounting sleeve is coaxially arranged in the outer wall and is connected and fixed through the supporting rib, and an installation space for installing the fixing frame is formed between the supporting rib and the upper cover.

[0011] According to some embodiments of the present invention, the outer wall is provided with a positioning column at one end of the supporting rib close to the upper cover, and the elastic support member includes a spring sleeved on the positioning column.

[0012] According to some embodiments of the present invention, an elastic sealing member is provided between the fixing frame and the mounting sleeve or the supporting rib.

[0013] According to some embodiments of the present invention, a first positioning groove is provided on the fixing frame, a second positioning groove is provided on the mounting sleeve corresponding to the first positioning groove, and the elastic sealing component includes a silicone sealing ring adapted to the first positioning groove and the second positioning groove and a TPU film arranged between the two silicone sealing rings.

[0014] According to some embodiments of the present invention, the silicone sealing ring and the TPU film are an integrated structure.

[0015] According to some embodiments of the present invention, the upper cover is provided with card interfaces on both sides of the central through hole, and the outer surface of the mounting sleeve is provided with threads.

[0016] According to some embodiments of the present invention, the fixing frame is provided with a lower ring and an upper ring heat-sealed on the lower ring, and the upper end of the hemispherical silicone member is pressed tightly between the upper ring and the lower ring.

[0017] The puncture cannula according to the embodiment of the present invention is provided with a sealing cap having any of the above structures.

[0018] The puncture device according to the embodiment of the present invention is provided with the above-mentioned puncture cannula.

[0019] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0021] Figure 1 This is a structural cross-sectional view of the present invention;

[0022] Figure 2 A schematic diagram of a structural decomposition of the present invention;

[0023] Figure 3 This is a schematic diagram of an installation of a fixed bracket;

[0024] Figure 4 for Figure 3 A magnified schematic diagram of area A in the middle. DETAILED DESCRIPTION

[0025] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, "a plurality" refers to more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] Reference Figures 1 to 4 As shown, a sealing cap according to an embodiment of the present invention includes a sealing cap body, a fixing frame and a hemispherical silicone member 400. The circumference of the fixing frame is installed in the sealing cap body through a plurality of elastic support members. The hemispherical silicone member 400 is arranged on the fixing frame. In the sealing cap of the present invention, the fixing frame adopts an elastic support member to float. Compared with the traditional structure in which floating is achieved by a wavy silicone ring, the elastic support member will not tear or wrinkle and cannot be reset, and the working stability and reliability are stronger. Moreover, compared with the wavy silicone ring, the elastic support member is not only conducive to reducing production costs, but also can reduce installation requirements and improve production and assembly efficiency.

[0030] It is understood that the elastic support member can be a spring 500 or other structure with similar functions to the spring 500, as long as it can achieve floating fixation of the fixing frame within the sealing cap body. The number of elastic support members can be flexibly set as needed, such as three, four, or six circumferentially, and is not specifically limited here.

[0031] Reference Figure 1 and Figure 2 In some embodiments, the sealing cap body includes two parts: an upper cover 100 and a base 200. A central through hole 101 is provided in the center of the upper cover 100, and a card interface 102 is provided on both sides of the central through hole 101. The central through hole 101 is used for puncture by the puncture cone, and the card interface 102 is used for clamping and fixing the puncture cone. The base 200 has an outer wall 201, a support rib 202, and a mounting sleeve 203. The outer wall 201 and the peripheral edge of the upper cover 100 are connected and fixed by heat sealing, bonding, tight fitting, etc. The mounting sleeve 203 is coaxially arranged in the outer wall 201 and connected and fixed by the support rib 202. An installation space for installing a fixing bracket is formed between the support rib 202 and the upper cover 100. The outer wall 201, the support rib 202, and the mounting sleeve 203 can be integrally formed. The structural arrangement of this embodiment can reduce the overall production difficulty of the sealing cap body by dividing the design and processing into two parts. At the same time, it is also convenient to install the fixing frame and the hemispherical silicone member 400. The outer wall 201 of the mounting sleeve 203 is provided with a thread for mounting on the puncture sleeve.

[0032] Reference Figure 4 The elastic support member adopts a spring 500. In order to facilitate the installation of the spring 500, in some embodiments, the outer wall 201 is provided with a positioning column 204 at one end of the supporting rib 202 close to the upper cover 100, and the outer side of the fixing frame is correspondingly provided with an installation column 303, and the two ends of the spring 500 are sleeved on the positioning column 204 and the installation column 303.

[0033] Because the mounting bracket is floatingly mounted within the installation space formed between the upper cover 100 and the base 200 via springs 500, the sides and bottom of the mounting bracket are free-standing areas. To ensure a tight seal, an elastic seal 600 is installed between the mounting bracket and the mounting sleeve 203 or support ribs 202. The elastic seal 600, combined with the hemispherical silicone member 400, seals the mounting sleeve 203.

[0034] Reference Figure 1In some embodiments, the fixing frame is an annular structure and its size is adapted to the mounting sleeve 203. A first positioning groove is provided at the bottom of the fixing frame, and a second positioning groove is correspondingly provided at the upper end of the mounting sleeve 203. The elastic seal 600 includes a silicone sealing ring 601 adapted to the first positioning groove and the second positioning groove, and a TPU film 602 provided between the two silicone sealing rings 601. In this embodiment, the elastic seal 600 is clamped in the first positioning groove and the second positioning groove through the silicone sealing ring 601, which can ensure the sealing effect and installation stability. At the same time, the TPU film 602 has excellent tensile deformation ability, which can cooperate with the floating of the fixing frame to ensure sealing performance.

[0035] It is understandable that the silicone sealing ring 601 and the TPU film 602 can be set as an integrated structure, or can be fixed by other methods such as hot melt bonding, bonding, etc.

[0036] To secure the hemispherical silicone member 400, in some embodiments, the mounting frame is provided with an upper ring 301 and a lower ring 302. The outer edges of the upper ring 301 and the lower ring 302 are sealed together using a heat-sealing process, pressing the upper end of the hemispherical silicone member 400 between the upper ring 301 and the lower ring 302. This ensures a tight seal between the mounting frame and the hemispherical silicone member 400.

[0037] In addition, the present invention also provides a puncture cannula equipped with a sealing cap according to any of the above embodiments, and a puncture device equipped with the puncture cannula. It is understood that the puncture cannula or puncture device of the present invention, by using the aforementioned sealing cap, can effectively solve the shortcomings of traditional structures.

[0038] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. A sealing cap, characterized in that: include: Sealing cap body; A fixing frame, wherein the fixing frame is circumferentially mounted in the sealing cap body via a plurality of elastic supporting members; a hemispherical silicone member, the hemispherical silicone member being arranged on the fixing frame; The sealing cap body is provided with: an upper cover, a central through hole is opened in the center of the upper cover; a base, the base having an outer wall, a supporting rib and a mounting sleeve, the outer wall is connected and fixed to the peripheral edge of the upper cover, the mounting sleeve is coaxially arranged inside the outer wall and is connected and fixed through the supporting rib, and an installation space for installing the fixing bracket is formed between the supporting rib and the upper cover; an elastic sealing member is provided between the fixing bracket and the mounting sleeve or the supporting rib, and the elastic sealing member includes a silicone sealing ring and a TPU film; The outer side wall is provided with a positioning column at one end of the supporting rib close to the upper cover, and the elastic support member includes a spring sleeved on the positioning column; The fixing frame is provided with a first positioning groove, the mounting sleeve is provided with a second positioning groove corresponding to the first positioning groove, and the elastic sealing component includes a silicone sealing ring adapted to the first positioning groove and the second positioning groove and a TPU film provided between the two silicone sealing rings.

2. The sealing cap according to claim 1, wherein: The silicone sealing ring and the TPU film are an integrated structure.

3. The sealing cap according to claim 1, wherein: The upper cover is provided with card interfaces on both sides of the central through hole, and the outer surface of the mounting sleeve is provided with threads.

4. The sealing cap according to any one of claims 1 to 3, characterized in that: The fixing frame is provided with a lower ring and an upper ring heat-sealed on the lower ring, and the upper end of the hemispherical silicone member is pressed tightly between the upper ring and the lower ring.

5. A puncture cannula, characterized in that: A sealing cap according to any one of claims 1 to 4 is provided.

6. A trocar, characterized in that: The puncture cannula according to claim 5 is provided.

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