A gasbag seal ring for a puncture device

By designing a balloon sealing ring for the trocar and utilizing the variable diameter function of the balloon to adapt to instruments of different sizes, the problem of incompatibility of trocars was solved, achieving both sealing effect and smooth operation.

CN224474455UActive Publication Date: 2026-07-10VHMED NANTONG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
VHMED NANTONG CO LTD
Filing Date
2025-01-15
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing puncture devices are incompatible with 3mm and 5mm medical devices, leading to air leakage during surgery and increasing the burden on patients and surgical costs.

Method used

Design a puncture device with an airbag sealing ring, including an upper seal and a lower seal. The airbag's variable diameter function enables sealing of instruments of different sizes. The pressure change of the airbag adapts to instruments of different diameters, reducing friction and air leakage.

Benefits of technology

It achieves simultaneous sealing of 3mm and 5mm instruments with the trocar, reducing air leakage, improving the smoothness of the operation, and reducing the burden on patients.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of air bag sealing rings of puncture device, including upper seal and lower seal;The upper seal is located above or below the lower seal;Upper seal includes sealing washer and variable-diameter sealing air bag;The sealing washer and variable-diameter sealing air bag are annular structure, and coaxially arranged;The variable-diameter sealing air bag is set to the inboard of sealing washer;The sealing washer is provided with air passage in communication with variable-diameter sealing air bag;Variable-diameter sealing air bag middle part is instrument channel;Lower seal middle part is provided with instrument channel.Simultaneously meet the sealing of puncture device series 3mm specification and 5mm specification, puncture device can produce larger air leakage during operation.
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Description

Technical Field

[0001] This utility model relates to sealing rings for medical devices, specifically to a balloon sealing ring for a puncture device. Background Technology

[0002] A trocar is a widely used medical device in the medical field. It is used to establish a surgical channel, through which various sizes of medical instruments are inserted into the human body to act on the patient. Currently, trocars on the market that can pass through 5mm medical instruments are not compatible with 3mm medical instruments. This is because when a 3mm instrument is inserted into the human body through a 5mm trocar, the space for the medical instrument to move within the trocar increases, which can cause greater air leakage during surgery. Therefore, most trocar series have separate 3mm and 5mm sizes. However, in a medical environment where a 3mm instrument is needed, an additional 3mm trocar must be used, which increases both the burden on the patient and the cost of the surgery. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a puncture device with an air-filled sealing ring that simultaneously satisfies the sealing requirements of both 3mm and 5mm specifications in the puncture device series, preventing significant air leakage during surgery.

[0004] The technical solution of this utility model is: a pneumatic sealing ring for a puncture device, comprising an upper seal and a lower seal; the upper seal is located above or below the lower seal;

[0005] The upper seal includes a sealing gasket and a variable diameter sealing airbag; both the sealing gasket and the variable diameter sealing airbag are annular structures and are coaxially arranged; the variable diameter sealing airbag is located inside the sealing gasket; the sealing gasket is provided with an air passage communicating with the variable diameter sealing airbag; the middle of the variable diameter sealing airbag is an instrument channel.

[0006] An instrument channel is provided in the middle of the lower seal.

[0007] Furthermore, the lower seal includes an annular sealing gasket and a conical sealing gasket; a 5mm instrument channel is provided at the bottom of the conical sealing gasket; the annular sealing gasket and the conical sealing gasket are connected by a connecting ring and integrally formed.

[0008] Furthermore, it also includes an air cylinder, which is connected to the air inlet of the air passage.

[0009] Furthermore, the air cylinder is screwed to the air passage.

[0010] The beneficial effects of this utility model are as follows:

[0011] The sealing ring of this invention can simultaneously meet the sealing requirements of both 3mm and 5mm specifications of the trocar series, which will cause significant air leakage during surgery. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 The diagram shows the shape and cross-section of the upper seal.

[0014] Figure 2 The diagram shown illustrates the process of passing through a 5mm instrument.

[0015] Figure 3 The diagram shown illustrates the process when using a 3mm instrument. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below through specific embodiments.

[0017] This utility model discloses a pneumatic sealing ring for a puncture device, comprising an upper seal 1 and a lower seal 2; the upper seal 1 is located above or below the lower seal 2. The upper seal 1 and the lower seal 2 are independently configured and installed inside the puncture device.

[0018] like Figure 1 As shown, the upper seal 1 in this embodiment includes a sealing gasket 11 and a variable diameter sealing airbag 12; both the sealing gasket 11 and the variable diameter sealing airbag 12 are annular structures and are coaxially arranged; the variable diameter sealing airbag 12 is disposed inside the sealing gasket 11; the sealing gasket 11 is provided with an air passage 13 communicating with the variable diameter sealing airbag 12; the middle part of the variable diameter sealing airbag 12 is an instrument channel; the lower seal 2 is provided with an instrument channel in the middle.

[0019] The lower seal 2 includes an annular sealing gasket and a conical sealing gasket; a 5mm instrument channel is provided at the bottom of the conical sealing gasket; the annular sealing gasket and the conical sealing gasket are connected by a connecting ring and are integrally formed.

[0020] Air cylinder 5 is connected to the air inlet of air passage 13. Air cylinder 5 is screwed to air passage 13.

[0021] like Figure 2 As shown, to pass through the 5mm diameter instrument 6, the air pump 5 is operated. Due to the air pressure, the inner ring of the upper seal 1 is concave inward, so no friction is generated when passing through the instrument. At this time, the lower seal 2 plays a sealing role.

[0022] like Figure 3As shown, when passing through a 3mm instrument, operate the air cylinder 5 to inject air into the upper seal 1. Due to the pressure, the inner ring bulges outward, and the sealing ring wraps around the 3mm instrument 7 to achieve a sealing effect. At this time, the lower seal 2 does not have a sealing effect. Throughout the process, the instrument only contacts one sealing ring, and no large friction is generated. The instrument operation is smooth and the sealing performance is good.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and protection scope, and such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present utility model's technical solution.

Claims

1. A pneumatic sealing ring for a puncture device, characterized in that: It includes an upper seal (1) and a lower seal (2); the upper seal (1) is located above or below the lower seal (2); The upper seal (1) includes a sealing gasket (11) and a variable diameter sealing airbag (12); both the sealing gasket (11) and the variable diameter sealing airbag (12) are annular structures and are coaxially arranged; the variable diameter sealing airbag (12) is located inside the sealing gasket (11); the sealing gasket (11) is provided with an air passage (13) communicating with the variable diameter sealing airbag (12); the middle part of the variable diameter sealing airbag (12) is an instrument channel; The lower seal (2) has an instrument channel in the middle.

2. The air-filled sealing ring for a puncture device according to claim 1, characterized in that: The lower seal (2) includes an annular sealing gasket and a conical sealing gasket; a 5mm instrument channel is provided at the bottom of the conical sealing gasket; the annular sealing gasket and the conical sealing gasket are connected by a connecting ring and are integrally formed.

3. The air-filled sealing ring for a puncture device according to claim 1, characterized in that: It also includes an air cylinder (5), which is connected to the air inlet of the air passage (13).

4. The air-filled sealing ring for a puncture device according to claim 3, characterized in that: The air cylinder (5) is screwed to the air passage (13).