Provided in the present disclosure is a puncture core assembly, comprising an operating assembly, a puncture core rod, and a puncture tip used for puncturing human tissue so as to form a puncture opening. The operating assembly is manipulated to generate a driving force. The puncture core rod comprises a transmission assembly and an execution assembly. The transmission assembly transmits the driving force. The execution assembly has a suture actuator, and also has a positioning assembly, a suture assembly, a suture thread release assembly, and a suture needle fixing assembly, which are used to perform positioning when suturing the puncture opening, suture out a needle, release a suture thread, and receive and hold the suture needle respectively.

The present disclosure provides a suture line release mechanism, the puncture core assembly, a puncture device, and a use method of the puncture device. The suture line release mechanism includes a release execution component; the release execution component includes a fixing member and a puncturing tip the puncturing tip is provided with a receiving part; the release execution component has an initial state and a release state; in the initial state, a part of the fixing member is received in the receiving part, and a closed suture line receiving space is formed between the puncturing tip and the part of the fixing member; in the release state, the suture line receiving space is exposed.

Access assemblies include an instrument valve housing and a valve assembly disposed within a cavity of the instrument valve housing. The valve assembly includes a guard assembly, and a seal assembly disposed adjacent to the guard assembly. The seal assembly includes first, second, third, and fourth seal sections. The first seal section is nested within the second seal section, the first and second seal sections are nested within the third seal section, and the first, second, and third seal sections are nested within the fourth seal section.

Surgical access assemblies include an instrument valve housing and a valve assembly disposed within the cavity of the instrument valve housing. The valve assembly includes a guard assembly, a seal assembly disposed adjacent to the guard assembly, and a centering mechanism for maintaining the seal assembly and guard assembly centered within a cavity of the instrument valve. The seal assembly includes a multi-petal seal member and upper and lower support members. The upper and lower support members sandwich the multi-petal seal member therebetween to reduce and/or eliminate leaks through the multi-petal seal member.

An access assembly includes an instrument valve housing and a valve assembly disposed within the instrument valve housing. The instrument valve housing includes upper and lower housing sections. The valve assembly includes a centering mechanism, a seal assembly, and a guard assembly. The centering mechanism is configured to bias the valve assembly towards a generally centered position within the instrument valve housing. The centering mechanism includes a base seal member having an annular base and a flange portion. The flange portion includes an arcuate portion configured to adjustably engage first and second surfaces of the instrument valve housing in a sealing relation. The seal assembly is attachable to the centering mechanism. The seal assembly is configured to engage a surgical instrument inserted into the access assembly in a sealing relation. The guard assembly is attachable to the centering mechanism.

Access assemblies includes an instrument valve housing and a valve assembly disposed within the cavity of the instrument valve housing. The valve assembly includes a guard assembly, and a seal assembly disposed distal of the guard assembly. In embodiments, the seal assembly includes a plurality of seal segments in an overlapping configuration. Each seal segment of the plurality of seal segments includes a seal portion having a smooth surface and a ribbed surface. The ribbed surfaces include a central spline extending in a radial direction and plurality of concentric ribs extending outwardly from the central spline.

A gas circulation system is disclosed for performing robotically assisted surgical procedures in a surgical cavity of a patient, which includes a multi-lumen tube set including a dual lumen portion having a pressurized gas line and a return gas line, and a single lumen portion having a gas supply and sensing line, a valve sealed access cap for cooperative reception with a first robotic cannula and having an inlet path for communicating with the gas supply and sensing line of the tube set, and a gas sealed access cap for cooperative reception with a second robotic cannula and having an inlet path for communicating with the pressurized gas line of the tube set and an outlet path for communicating with the return gas line of the tube set.

A fixation device for folding a seal member includes a frame having a horizontal portion and an upright portion, a press assembly secured to the upright portion of the frame, and a nest assembly secured to the horizontal portion of the frame. The press assembly includes a handle assembly and an anvil assembly operably connected to the handle assembly. The nest assembly includes a clamping assembly, a folding assembly supported on the clamping assembly, a support assembly supported on the folding assembly, and a nest member. The support assembly includes a support plate and a seal clamp for securing a seal member.

Surgical access devices having wound closure features incorporated as part of the device are provided. The devices allow suture to be inserted directly into the device and operated to close an opening through which the device is disposed as or shortly after the device is removed from the surgical site. Further, the wound closure features allow for various orientations of wound closure to be achieved by adjusting an angle at which the suture enters tissue surrounding the opening to be closed. Some of the wound closure features provided for include openings formed in both the housing and cannula of the surgical access device, multiple openings formed in one or both the housing and cannula, locations of the openings being adjustable or otherwise movable, and various flexible seals. Other features, as well as methods of closing an opening through which the surgical access device was disposed, are also provided.

A valve assembly for instruments and/or guide wires for use as access/tool port includes a cannula attached to a valve housing with a through hole. Elastic valve members are housed in the valve housing for sealing the through hole either when no device is inserted, or when a specific device with a compatible cross section is inserted. A further sealing arrangement is housed in the valve housing. The further sealing arrangement is extendable within the valve housing to selectively reduce the width of the through hole from a non-sealed configuration where one generic device or a group of generic devices, not necessarily having the same size and/or shape, can be inserted into and/or removed from the through hole, to a sealed configuration where the sealing arrangement seals the through hole with the generic device or the group of generic devices inserted into the through hole.