Ring type sealing device and trocar for trocar
A technology of sealing device and trocar, which is applied in the field of trocar to achieve the effect of maintaining dynamic sealing performance, increasing resistance and good dynamic sealing performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0088] Embodiment 1: The 4-lobe annular sealing device of the present invention of the shaft-shaped dynamic connection mechanism
[0089] refer to Figure 2-1 to Figure 2-9 , according to the technical scheme of the present invention, design concrete part drawings.
[0090] The guide block (11), the connection locking mechanism (4), and the translation slider mechanism (5) are made of medical polymer materials, and the materials are selected from: including but not limited to, medical PP, medical PE, medical PU, medical PA, medical PC, medical PTFE and other medical materials. Wherein, the guide surface of the guide block (11) can also be provided with super-slippery material coating to reduce the frictional resistance when the surgical instrument moves.
[0091] The sealing ring (3) is made of medical elastic materials, including but not limited to flexible medical materials such as medical silicone, medical rubber, medical polyurethane, and medical latex.
[0092] When as...
Embodiment 2
[0104] Embodiment 2: The sealing device of the wedge-shaped positioning groove of the present invention
[0105] refer to Figure 3-1 to Figure 3-4 , The technical principle of this embodiment is the same as that of Embodiment 1, the only difference is that the positioning groove (10) adopts a wedge-shaped structure. The purpose of using the wedge-shaped groove is: when the sealing ring is compressed and fixed by the connection locking mechanism (4) to form a sealing structure, due to the pressure of the upper and lower hypotenuses, the sealing ring is squeezed from the outside to the inside, and the sealing ring ( 3) Surrounding force to the surgical instrument (8).
[0106] In this embodiment, the angle α between the upper edge (101) of the positioning groove (10) and the vertical bottom edge of the positioning groove is between 90°~30°, and the optimum value is between 87°~45°; the positioning groove ( The angle β between the bottom edge (102) of 10) and the vertical bott...
Embodiment 3
[0107] Embodiment 3: The sealing device of the present invention of the groove type dynamic connection mechanism
[0108] refer to Figure 4-1 to Figure 4-2 , the difference between this embodiment and Embodiment 1 is that the dynamic connection mechanism of Embodiment 1 uses a shaft-shaped connection mechanism, while in this embodiment, the elastic low-strength region (21) is formed by the groove (210) , as the dynamic connection structure (2).
[0109] When the surgical instrument (8) is inserted, the groove (210) is deformed, driving the guide block (11) and the sealing ring (3) to expand outward, the gap (12) increases, and the squeezed sealing ring (3) The overflow through the enlarged gap surrounds the outer sheath of the surgical instrument and plays a sealing role.
[0110] When the surgical instrument (8) is withdrawn, the guide surface at the lower end of the guide block (11) plays a guiding role, allowing the surgical instrument to withdraw conveniently. Under th...
PUM
Property | Measurement | Unit |
---|---|---|
diameter | aaaaa | aaaaa |
diameter | aaaaa | aaaaa |
thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com