Sealing assembly for a surgical access assembly

Abstract

The present disclosure relates to a seal assembly for a surgical access assembly. The access assembly includes an instrument valve housing and a valve assembly disposed within 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 a plurality of seal segments defining a substantially hexagonal body. Each seal segment of the plurality of seal segments includes a base portion and a seal portion extending from the base portion. Each base portion includes an outer edge formed by three segments. Each seal segment of the plurality of seal segments is disposed relative to an adjacent seal segment of the plurality of seal segments such that two of the three segments of the outer edge of the respective seal segment are aligned with one another. The valve assembly further includes a centering mechanism for biasing the seal assembly and guard assembly toward a center of a cavity of an instrument valve.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit and priority of U.S. Provisional Patent Application No. 62 / 916,931, filed October 18, 2019, the entire disclosure of which is incorporated herein by reference. Technical Field

[0003] This disclosure relates to an access assembly for minimally invasive surgical procedures that includes a seal. More specifically, this disclosure relates to a seal for a surgical access assembly. Background Technology

[0004] To facilitate minimally invasive surgery, a working space must be created within the required surgical area. Inhalation gas, typically CO2, is introduced into the patient's abdomen to create an inflated state known as pneumoperitoneum. Access ports are used to allow the introduction of surgical instruments and endoscopes (or other visualization tools). These ports maintain pressure for pneumoperitoneum because they have one or more seals suitable for surgical instruments. Typically, a "zero seal" in the access port seals the port when no surgical instrument is present, and an instrument seal seals around any surgical instrument inserted through the access port.

[0005] The breadth of surgical instruments on the market today necessitates a robust seal that is adjustable to multiple sizes and can withstand repeated insertions of the instrument. Some instruments may include sharp edges that can tear or damage the seal. Therefore, entry components with improved seal durability would be beneficial. Summary of the Invention

[0006] An access assembly with improved seal durability is provided. The access assembly includes an instrument valve housing and a valve assembly disposed within a cavity of the instrument valve housing. The instrument valve housing includes upper, lower, and inner housing sections, defining a cavity. The valve assembly includes a sealing assembly, a protective assembly disposed adjacent to the sealing assembly and configured to engage with the sealing assembly, and a centering mechanism for maintaining the sealing assembly and the protective assembly centered within the cavity of the instrument valve. The protective assembly includes a ring portion and a plurality of flaps. When the protective assembly is in an open condition, the plurality of flaps extend radially outward from the ring portion, and when the protective assembly is in a folded condition, the plurality of flaps extend radially inward.

[0007] In one embodiment, the protective assembly includes first, second, third, and fourth lobes, each lobe including a flap portion and a connector portion for engaging the flap portion to a ring portion. Each flap portion may include a first flap segment and a second flap segment. Each of the first and second flap segments may define a groove therebetween. The first flap segment of each of the plurality of lobes may overlap with the second flap segment of an adjacent lobe of the plurality of lobes.

[0008] In an embodiment, the ring portion defines a plurality of openings, and each connector portion defines a plurality of openings. The flap portion of the first protective member may overlap with the flap portion of the second protective member. The flap portion of the second protective member may overlap with the flap portion of the third protective member. The flap portion of the third protective member may overlap with the flap portion of the fourth protective member. The flap portion of the fourth protective member may overlap with the flap portion of the first protective member.

[0009] The valve assembly may also include upper and lower retainers and an intermediate member. At least one of the upper or lower retainer members may include a plurality of pins configured to engage the annular portion of the protective assembly. The sealing assembly may include an hourglass-shaped seal supported by upper and lower flange members. The intermediate retainer member may be received between the upper and lower flange members. The centering mechanism may include a bellows. The centering mechanism may include a ring and a plurality of spokes extending outward from the ring. Each of the plurality of spokes may include a rib extending at least partially along the length of the spoke.

[0010] Another entry assembly with improved seal durability is provided. The entry assembly includes an instrument valve housing and a valve assembly disposed within a cavity of the instrument valve housing. The instrument valve housing includes upper, lower, and inner housing sections, defining a cavity. The valve assembly includes a protective component, a sealing component disposed adjacent to the protective component, and a centering mechanism for maintaining the sealing component and the protective component centered within the cavity of the instrument valve. The sealing component includes a plurality of sealing sections. Each of the plurality of sealing sections includes a substantially C-shaped base portion and a semi-conical sealing portion. Each of the plurality of sealing sections is fastened to at least one adjacent sealing section. The plurality of sealing sections extend outwardly in a flat manner when the sealing assembly is in an folded condition, and when the sealing assembly is folded, the plurality of sealing sections stack on top of each other.

[0011] The valve assembly may also include upper and lower retainer components. At least one of the upper or lower retainer components may include a plurality of pins configured to engage a base portion of the sealing assembly.

[0012] In one embodiment, the protective assembly includes a ring portion and a plurality of flaps. The plurality of flaps extend radially outward from the ring portion when the protective assembly is in an folded state. The plurality of flaps extend radially inward when the protective assembly is in a folded state. The protective assembly and the sealing assembly can be received between upper and lower retainer members.

[0013] The centering mechanism may include a bellows. The centering mechanism may include a ring and a plurality of spokes extending outward from the ring. Each of the plurality of spokes may include a rib extending at least partially along the length of the spoke.

[0014] Another entry assembly with improved seal durability is provided. The entry assembly includes an instrument valve housing and a valve assembly disposed within a cavity of the instrument valve housing. The instrument valve housing includes upper, lower, and inner housing sections, defining a cavity. The valve assembly includes a protective component and a sealing component disposed adjacent to the protective component. The sealing component includes a plurality of sealing sections. Each of the plurality of sealing sections includes a generally C-shaped base portion supporting a sealing portion. Edge portions extend around the outer edge of each base portion. Each sealing section is received within the edge portion of an adjacent sealing section, such that the plurality of sealing sections are stacked on top of each other.

[0015] In one embodiment, each of the sealing portions defines a wedge-shaped opening. Each base portion may contain multiple openings. The distance between the multiple openings and the edge portion may increase in a clockwise direction. The valve assembly may also include a centering mechanism for maintaining the sealing and protective components centered within the cavity of the instrument valve.

[0016] The valve assembly may also include upper and lower retainer components. At least one of the upper or lower retainer components may include a plurality of pins configured to engage a base portion of the sealing assembly.

[0017] In one embodiment, the protective assembly includes a ring portion and a plurality of flaps. The plurality of flaps extend radially outward from the ring portion when the protective assembly is in an folded state. The plurality of flaps extend radially inward when the protective assembly is in a folded state. The protective assembly and the sealing assembly can be received between upper and lower retainer members.

[0018] In one embodiment, the centering mechanism includes a bellows. The centering mechanism includes a ring and a plurality of spokes extending outwardly from the ring, each of the plurality of spokes including a curved portion that engages with the instrument valve housing under load. Each of the plurality of spokes may include a rib extending at least partially along the length of the spoke.

[0019] Another access component includes an instrument valve housing and a valve assembly disposed within a cavity of the instrument valve housing. The instrument valve housing includes upper, lower, and inner housing sections. The valve assembly includes a protective assembly and a sealing assembly disposed adjacent to the protective assembly. The sealing assembly includes a plurality of sealing segments defining a substantially hexagonal body. Each of the plurality of sealing segments includes a base portion and a sealing portion extending from the base portion. Each base portion includes an outer edge formed by three segments. Each of the plurality of sealing segments is disposed relative to adjacent sealing segments such that two of the three segments of the outer edge of the respective sealing segment are aligned with each other. The valve assembly also includes a centering mechanism for offsetting the sealing assembly and the protective assembly toward the center of the cavity of the instrument valve.

[0020] In one embodiment, each of the plurality of sealing segments is rotated 60 degrees relative to its adjacent sealing segment. The sealing portions of the plurality of sealing segments may be radially inwardly tapered. The sealing portions of the plurality of sealing segments may define an opening. The opening may have a diameter from about 0.025” to about 0.100”. The sealing portions of the plurality of sealing segments may form an angle from about 180° to about 275°. In one embodiment, the angle may be 210°. The plurality of sealing segments may comprise six (6) sealing segments. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure, wherein:

[0022] Figure 1 This is a perspective side view of an entry port component according to an embodiment of the present disclosure;

[0023] Figure 2 It was cut along section line 2-2. Figure 1 A cross-sectional side view of the inlet port assembly shown;

[0024] Figure 3 yes Figure 1 Top perspective view of the valve assembly of the inlet port assembly shown;

[0025] Figure 4 yes Figure 3 The valve assembly shown is viewed from below.

[0026] Figure 5 yes Figure 3The exploded perspective view of the valve assembly shown includes the centering mechanism, the protective assembly, the sealing assembly, and the retainer assembly;

[0027] Figure 6 yes Figure 5 The protective components shown are in an initial or folded condition.

[0028] Figures 7 to 9 yes Figure 5 The protective components shown are in a perspective view with sequential partial folding conditions;

[0029] Figure 10 yes Figure 5 The protective components shown are in a perspective view with the device fully folded.

[0030] Figure 11 yes Figure 5 The top perspective view of the sealing assembly shown in the image;

[0031] Figure 12 yes Figure 11 The perspective side view of the sealing assembly shown in the image;

[0032] Figure 13 It was cut along section line 13-13. Figure 11 The cross-sectional side view of the sealing assembly shown in the figure;

[0033] Figure 14 This is a top perspective view of a valve assembly according to another embodiment of the present disclosure;

[0034] Figure 15 yes Figure 14 The valve assembly shown is a bottom perspective view;

[0035] Figure 16 yes Figure 14 The exploded perspective view of the valve assembly shown includes the centering mechanism, the protective assembly, the sealing assembly, and the retainer assembly;

[0036] Figure 17 yes Figure 16 The perspective view shown shows the sealing assembly in its initial or folded condition;

[0037] Figures 18 to 21 yes Figure 16 The protective components shown are in a perspective view with sequential partial folding conditions;

[0038] Figure 22 yes Figure 16 The protective components shown are in a perspective view with the device fully folded.

[0039] Figure 23 This is a top perspective view of a valve assembly according to another embodiment of the present disclosure;

[0040] Figure 24 yes Figure 23 The valve assembly shown is viewed from below.

[0041] Figure 25 yes Figure 23 The exploded perspective view of the valve assembly shown includes the centering mechanism, the protective assembly, the sealing assembly, and the retainer assembly;

[0042] Figure 26 yes Figure 25 A top view of the first sealing member of the sealing assembly shown in the figure;

[0043] Figure 27 yes Figure 25 A perspective view of the fourth sealing member of the sealing assembly shown in the figure;

[0044] Figures 28 to 33 It is assembly Figure 25 Perspective side and top views of the sealing assembly method shown in the figure;

[0045] Figure 34 yes Figure 25 The top view of the sealing assembly shown in the image;

[0046] Figure 35 yes Figure 25 A perspective view of the sealing assembly shown in the image;

[0047] Figure 36 This is a perspective view of a sealing assembly according to another embodiment of the present disclosure;

[0048] Figure 37 yes Figure 36 The top view of the sealing assembly shown in the image;

[0049] Figure 38 yes Figure 36 A top view of the sealing section of the sealing assembly shown in the image;

[0050] Figure 39 yes Figure 38 A perspective side view of the sealing section shown in the image;

[0051] Figures 40 to 45 It is assembly Figure 36 A perspective top view of the sealing assembly method shown in the figure;

[0052] Figure 46 This is a top perspective view of a centering mechanism including a sealing assembly according to an embodiment of the present disclosure;

[0053] Figure 47 It is installed inside the valve body of the instrument. Figure 46 A top view of the centering mechanism and sealing assembly shown in the figure;

[0054] Figure 48 This is an enlarged view of the spokes of a centering mechanism according to another embodiment of the present disclosure;

[0055] Figure 49 This is a top perspective view of a centering mechanism including a sealing assembly according to another embodiment of the present disclosure; and

[0056] Figure 50 It is installed inside the valve body of the instrument. Figure 49 The top view of the centering mechanism and sealing assembly shown in the figure. Detailed Implementation

[0057] Specific embodiments of this disclosure are described below with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely illustrative and may be embodied in various forms. Well-known functions or constructions have not been described in detail to avoid obscuring this disclosure with unnecessary detail. Therefore, the specific structural and functional details disclosed herein should not be construed as limiting, but merely as the basis for the claims and as a representative basis for teaching those skilled in the art to use this disclosure in virtually any appropriately detailed structure. Throughout the description with reference to the drawings, the same reference numerals denote similar or identical elements.

[0058] As used herein, the term "distal" refers to the portion of the device or its components further away from the user, while the term "proximal" refers to the portion of the device or its components closer to the user. As used herein, the term "about" means that the value is approximate and that small variations will not significantly affect the practice of the disclosed embodiments. When using numerical limits, unless the context otherwise indicates, "about" means that the value can vary by ±10% and remain within the range of the disclosed embodiments.

[0059] An access port assembly is used during minimally invasive surgical procedures (e.g., laparoscopic surgery) and provides sealed access for surgical instruments into an inflated body cavity (e.g., the abdominal cavity). The access port assembly of this disclosure includes an instrument valve housing mounted on a cannula and an occluder (not shown) inserted through the valve housing and the cannula. The occluder may have a blunt distal end, or a penetrating distal end with or without a blade, and may be used to incise the abdominal wall to allow the access port assembly to be introduced into the abdomen. The handle of the occluder may engage or selectively lock into the instrument valve housing of the access port assembly.

[0060] The access port assembly is used to pass through anatomical structures, such as the abdominal wall, either through a new channel formed through said structure or through an existing opening in said structure. Once the cannula assembly has tunneled through the anatomical structure, the cannula occluder is removed, leaving the cannula assembly in place. The instrument valve housing of the cannula contains a valve that prevents the infused fluid from escaping from the body cavity while also allowing the insertion of surgical instruments into the cavity.

[0061] In various embodiments, a bladeless optical cannula occluder may be provided, allowing for the separation of tissue planes during surgical procedures and visualization of tissue fibers during dissection, thereby allowing for control over the passage of tissue fibers through the body wall. In other embodiments, the cannula occluder may be bladeless but not optical, for example, without simultaneous visualization through the distal end of the occluder. A bladeless occluder may be provided for blunt dissection of the abdominal wall during surgical procedures.

[0062] Various trocar occluders suitable for the cannulas of this disclosure are known, including, for example, bladed, bladeless, blunt, optical, and non-optical trocar occluders. For a detailed description of the structure and function of exemplary trocar assemblies comprising exemplary trocar occluders and exemplary cannulas, please refer to publicly available PCT Publication No. WO 2016 / 186905 (“905 Publication”), the contents of which are incorporated herein by reference in their entirety.

[0063] Now, let's refer to... Figure 1 The access port assembly according to aspects of this disclosure is generally shown as a cannula assembly 100. Cannula assembly 100 includes a cannula 102 and an instrument valve housing 110 attached to the cannula 102. For a detailed description of an exemplary cannula assembly, please refer to publication '905.

[0064] refer to Figure 2The instrument valve housing 110 of the cannula assembly 100 includes an upper housing section 112, a lower housing section 114, and an inner housing section 116. The upper housing section 112, lower housing section 114, and inner housing section 116 are configured to support the valve assembly 120 on the proximal end of the cannula 102. More specifically, the inner housing section 116 is secured between the upper housing section 112 and the lower housing section 114, and the valve assembly 120 is received between the inner housing section 116 and the lower housing section 114. The upper housing section 112 and lower housing section 114 of the instrument valve housing 110 are selectively attached to and detached from the inner housing section 116. The lower housing section 114 may be releasably or permanently attached to the cannula tube 104 of the cannula assembly 102. In an embodiment, one or both of the upper housing section 112 and the lower housing section 114 of the instrument valve housing 110 may include knurling, notches, tabs, or be otherwise configured to facilitate engagement by a clinician.

[0065] The cannula assembly 100 may also include features for stabilizing the entry port assembly. For example, the distal end of the cannula tube 104 may carry a balloon anchor or other inflatable member that engages the abdomen from the inside. See, for example, commonly owned U.S. Patent No. 7,300,448, the entire disclosure of which is hereby incorporated by reference. Features on opposite sides of the abdominal wall may be used to further stabilize the entry port assembly, such as adhesive tabs or adjustable foam collars.

[0066] The upper housing section 112, lower housing section 114, and inner housing section 116 of the instrument valve housing 110 define a longitudinal channel 111 for receiving surgical instruments (not shown). The valve assembly 120 is supported within the instrument valve housing 110 to provide a sealed passage for surgical instruments to pass through the cannula assembly 100.

[0067] Special Reference Figures 3 to 5 The valve assembly 120, supported within the instrument valve housing 110, includes a centering mechanism 130, a protective assembly 140, a sealing assembly 160, and a retainer assembly 180. As will be described in further detail below, the centering mechanism 130 of the valve assembly 120 allows radial movement of the valve assembly 120 relative to the instrument valve housing 110 when a surgical instrument is received through the valve assembly 120, and returns the valve assembly 120 to a substantially centered position once the surgical instrument is removed from the instrument valve housing 110. The protective assembly 140 protects the sealing assembly 160 during the insertion and removal of the surgical instrument through the sealing assembly 160. The sealing assembly 160 provides a sealed passage for the surgical instrument through the instrument valve housing 110. The retainer assembly 180 maintains the alignment of the centering mechanism 130, the protective assembly 140, and the sealing assembly 160 with each other.

[0068] Continue reading Figure 2-5 As described above, the centering mechanism 130 of the instrument valve housing 110 is configured to maintain the valve assembly 110 centered within the instrument valve housing 110. Figure 3 More precisely, the centering mechanism 130 includes an outer ring 132, an inner ring 134, and a bellows 136 disposed between the outer ring 132 and the inner ring 134. Figure 2 As shown, the outer ring 132 is received between the inner housing section 116 and the lower housing section 114 to retain the centering mechanism 130 within the instrument valve housing 110. As will be described in further detail below, the inner ring 134 supports the sealing assembly 160. For a detailed description of the structure and function of the exemplary centering mechanism, please refer to the commonly owned U.S. Patent No. 6,702,787 (“787 Patent”), the contents of which are incorporated herein by reference in their entirety.

[0069] refer to Figure 6 The protective assembly 140 of the valve assembly 120 includes a ring portion 142 and first flaps 144, second flaps 146, third flaps 148, and fourth flaps 150 extending radially outward from the ring portion 142 when the protective assembly 140 is in an initial or folded condition. The protective assembly 140 may be formed from a plastic sheet / polymer material by stamping with a tool used to form the ring portion 142 and the flaps 144, 146, 148, 150. In embodiments, the plurality of openings 143, 143a (further described below) in the ring portion 142 and the first flaps 144, second flaps 146, third flaps 148, and fourth flaps 150 may be formed in the same stamping or molding operation. Alternatively, the protective assembly 140 may be formed by molding or other techniques.

[0070] The annular portion 142 of the protective assembly 140 is configured to be received between the upper retainer member 182 of the retainer assembly 180 and the sealing assembly 160. The annular portion 142 defines a central opening 141 for receiving a surgical instrument (not shown) therethrough. The annular portion 142 of the protective assembly 140 further defines the plurality of openings 143. The plurality of openings 143 in the annular portion 142 facilitate engagement of the protective assembly 140 via the retainer assembly 180.

[0071] Each of the first lobe 144, second lobe 146, third lobe 148, and fourth lobe 150 of the protective assembly 140 includes flap portions 144a, 146a, 148a, 150a and connector portions 144b, 146b, 148b, 150b that support the respective flap portions 144a, 146a, 148a, 150a of the first lobe 144, second lobe 146, third lobe 148, and fourth lobe 150 on the ring portion 142. In the embodiment and as shown in the figure, each of the first lobe 144, the second lobe 146, the third lobe 148, and the fourth lobe 150 is fastened to the ring portion 142 via hinge portions 144c, 146c, 148c, and 150c, said hinge portions being disposed between the corresponding connector portions 144b, 146b, 148b, and 150b of the first lobe 144, the second lobe 146, the third lobe 148, and the fourth lobe 150 and the ring portion 142. The hinge portions 144c, 146c, 148c, and 150c of the corresponding first lobe 144, the second lobe 146, the third lobe 148, and the fourth lobe 150 facilitate folding of the first lobe 144, the second lobe 146, the third lobe 148, and the fourth lobe 150 over the ring portion 142 of the protective assembly 140.

[0072] Each of the flap portions 144a, 146a, 148a, 150a of the corresponding first flap 144, second flap 146, third flap 148, and fourth flap 150 of the protective assembly 140 includes first and second flap segments 145a, 145b, 147a, 147b, 149a, 149b, 151a, 151b, respectively separated by radial channels or grooves 145c, 147c, 149c, 151c. Each of the first and second flap segments 145a, 145b, 147a, 147b, 149a, 149b, 151a, 151b of the corresponding flap portions 144a, 146a, 148a, 150a is radially inward and downward tapering, i.e., away from the ring portion 142. The first and second folded sections 145a, 145b, 147a, 147b, 149a, 149b, 151a, 151b and the radial channels 145c, 147c, 149c, 151c are operated as guiding surgical instruments (not shown) through the instrument guides of the folded portions 144a, 146a, 148a, 150a.

[0073] Each of the connector portions 144b, 146b, 148b, and 150b of the first lobe 144, second lobe 146, third lobe 148, and fourth lobe 150 defines a plurality of openings 143a. As will be described in further detail below, each of the plurality of openings 143a in the connector portions 144b, 146b, 148b, and 150b of the corresponding first lobe 144, second lobe 146, third lobe 148, and fourth lobe 150 aligns with the plurality of openings 143 in the ring portion 142 of the protective assembly 140 when the corresponding connector portions 144b, 146b, 148b, and 150b are folded relative to the ring portion 142.

[0074] In an embodiment, as shown in the figure, the first petal 144, the second petal 146, the third petal 148, and the fourth petal 150 of the protective assembly 140 may each include a lip 144d, 146d, 148d, and 150d, respectively, which are respectively disposed between the flap portions 144a, 146a, 148a, and 150a and the corresponding connector portions 144b, 146b, 148b, and 150b of the first petal 144, the second petal 146, the third petal 148, and the fourth petal 150. Figures 7 to 10 As shown, the lips 144d, 146d, 148d, and 150d of the corresponding flap portions 144a, 146a, 148a, and 150a respectively recess the flap portions 144a, 146a, 148a, and 150a into the central opening 141 of the ring portion 142 of the protective assembly 140. In this way, the lips 144d, 146d, 148d, and 150d are configured to reduce the cross-sectional configuration, such as the thickness, of the assembled protective assembly 140.

[0075] Special Reference Figures 6 to 10 The protective assembly 140 of the valve assembly 120 is shown in a sequentially folded stage. First refer to... Figure 6 The protective assembly 140 is shown in its initial folded condition. In the initial condition, the first flap 144, the second flap 146, the third flap 148, and the fourth flap 150 of the protective assembly 140 extend radially outward from the annular portion 142 of the protective assembly 140. As described above, the protective assembly 140 may be molded, stamped, or formed in any other suitable manner.

[0076] Turn Figure 7The first flap 144 of the protective assembly 140 is folded inward at the hinge portion 144c between the connecting portion 144b of the first flap 144 and the ring portion 142 of the protective assembly 140, as indicated by arrow "A". The first flap 144 of the protective assembly 140 is folded such that the connector portion 144b of the first flap 144 overlaps with the ring portion 142 of the protective assembly 140, and the plurality of openings 143a in the connector portion 144b align with the corresponding plurality of openings 143 in the ring portion 142 of the protective assembly. A lip 144d disposed between the flap portion 144a of the first flap 144 and the connector portion 144b causes the flap portion 144a to be recessed into the central opening 141 of the ring portion 142 of the protective assembly 140.

[0077] refer to Figures 8 to 10 The protective assembly 140 includes a second lobe 146, a third lobe 148, and a fourth lobe 150 that fold sequentially in the same manner as the first lobe 144. More specifically, the second lobe 146 folds at the hinge portion 144d, as if... Figure 8 As indicated by arrow "B", the first folded section 147a of the second lobe 146 substantially covers the second folded section 145b of the first lobe 146. The third lobe 148 folds at the hinge portion 148d, as if... Figure 9 As indicated by the arrow "C", the first folded section 149a of the third lobe 148 substantially covers the second folded section 147b of the second lobe 148. The fourth lobe 150 folds at the hinge portion 150d, as if... Figure 10 As indicated by the arrow "D", the first folded segment 151a of the fourth lobe 150 substantially covers the second folded segment 149b of the third lobe 148. The first folded segment 145a of the first lobe 144 is raised to allow the second folded segment 151b of the fourth lobe 150 to be received below the first folded segment 145a of the first lobe 144, such that the first folded segment 145a of the first lobe 144 substantially covers the second folded segment 151b of the fourth lobe 150. In this manner, the protective assembly 140 is folded such that each of the first folded segments 145a, 147a, 149a, 151a of the respective first lobes 144, second lobes 146, third lobes 148, and fourth lobes 150 overlaps with the adjacent second folded segments 146b, 147b, 149b, 151b of the respective second lobes 146, third lobes 148, fourth lobes 150, and first lobes 144.

[0078] The flap portions 144a, 146a, 148a, and 150a of the corresponding first flap 144, second flap 146, third flap 148, and fourth flap 150 of the protective assembly 140 are configured to flex downward immediately upon engagement with a surgical instrument to facilitate the passage of the surgical instrument through the sealing assembly 160. More specifically, engagement of one or more of the flap portions 144a, 146a, 148a, and 150a of the first flap 144, second flap 146, third flap 148, and fourth flap 150 respectively causes one or more of the flap portions 144a, 146a, 148a, and 150a to flex downward and engage with the hourglass seal 162 of the sealing assembly 160 to stretch the hourglass seal 162 of the sealing assembly 160 to increase the size of the central opening 163 of the hourglass seal 162. The increased size of the central opening 163 of the hourglass-shaped seal 162 allows surgical instruments to be received through the valve assembly 120. The larger the diameter of the surgical instrument, the more the corresponding first flap portions 144a, second flap portion 146a, third flap portion 148a, and fourth flap portion 150a of the first flap 144, second flap portion 146, third flap portion 148a, and fourth flap portion 150a deflect downwards, and the larger the size of the central opening 163 in the hourglass-shaped seal 164. The flap portions 144a, 146a, 148a, and 150a also operate to guide and orient the surgical instruments through the sealing assembly 160.

[0079] In an alternative embodiment, the third flap 148 of the protective assembly 140 can be folded before the second flap 146 is folded. In this way, the first folded section 147a of the second flap 146 substantially covers the second folded section 145b of the first flap 144, and the second folded section 147b of the second flap 146 covers the first folded section 149a of the third flap 148. Similarly, and as described above, the first folded section 151a of the fourth flap 150 substantially covers the second folded section 149b of the third flap 148, and the second folded section 151b of the fourth flap 150 substantially covers the first folded section 145a of the first flap 144.

[0080] It is envisioned that the protective assembly may comprise any number of lobes, and the lobes may comprise flap portions of any size or configuration. Exemplary protective assemblies and other aspects of the entry port assembly are described in U.S. Patents 5,895,377 and 6,569,120 and PCT Publication WO 91 / 12838, the entire disclosure of which is hereby incorporated by reference.

[0081] See Figure 11-13 The sealing assembly 160 of the valve assembly 120 is configured to pass through the instrument valve housing 110 ( Figure 2The sealing assembly 160 provides a seal around the outer surface of a surgical instrument (not shown). The sealing assembly 160 includes an hourglass-shaped seal 162 supported by an upper annular flange 164 and a lower annular flange 166. The hourglass-shaped seal 162 of the sealing assembly 160 is formed of an elastic material, such as rubber, and defines a central opening 163. The upper flange 164 and lower flange 166 of the sealing assembly 160 may be formed of the same or different materials. In an embodiment, the hourglass-shaped seal 162 may include one or more layers of fabric. The hourglass-shaped seal 162 provides a seal around the outer surface of the surgical instrument passing through the valve assembly 120. The upper annular flange 164 and lower annular flange 166 each define a plurality of openings 165, 167, corresponding to respective first and second sets of pins 188a extending from the respective upper retainer member 182 and lower retainer member 184 of the retainer assembly 180.

[0082] Return to view Figure 2 and 4 The retainer assembly 180 of the valve assembly 120 is configured to fasten the protective assembly 140 relative to the sealing assembly 160 and to fasten the protective assembly 140 and the sealing assembly 160 to the centering mechanism 130. The retainer assembly 180 includes an upper retainer member 182, a lower retainer member 184, and an intermediate retainer member 186.

[0083] As described above, the upper retainer member 182 and the lower retainer member 184 include corresponding first set of pins 188a and second set of pins 188b. The first set of pins 188a extends from the bottom surface of the upper retainer member 182, and the second set of pins 188b extends from the upper surface of the lower retainer member 184. Each of the first set of pins 188a and the second set of pins 188b is configured to be received in a locking manner into a plurality of openings 187 in the intermediate retainer member 186. Figure 5 Within. In an embodiment, the first set of pins 188a and the second set of pins 188b are welded, glued, adhered, joined, or otherwise fastened to each other and / or to the intermediate retainer member 186 within the plurality of openings 187 in the intermediate retainer member 186 to fasten the upper retainer member 182, the lower retainer member 184, and the intermediate retainer member 186 together. Alternatively, the intermediate retainer member 186 may include a locking feature (not shown) for engaging the first set of pins 188a and the second set of pins 188b.

[0084] Special Reference Figure 2The first plurality of pins 188a of the upper retainer member 182 extend through the annular portion 142 of the protective assembly 140 and the upper flange 164 of the sealing assembly 160. The second set of pins 188b of the lower retainer member 182 extends through the lower flange 166 of the sealing assembly 160 and the inner annulus 134 of the centering mechanism 130. The intermediate retainer member 186 is disposed between the upper flange 164 and the lower flange 166 of the sealing assembly 160.

[0085] Although the retainer assembly 180 is shown having a first plurality of pins 188a and a second plurality of pins 188b, it is contemplated that the retainer assembly 180 may contain only the first plurality of pins (not shown) having an increased length sufficient to engage an opening (not shown) in the opposing retainer member.

[0086] During surgical procedures utilizing the cannula assembly 100, surgical instruments (not shown) are introduced into the instrument valve housing 110 through longitudinal channels 113 in the upper housing section 112, lower housing section 114, and inner housing section 116. As described above, the distal end of the surgical instrument engages with one or more of the first flap 144, second flap 146, third flap 148, and fourth flap 150 of the protective assembly 140, causing the corresponding flap portions 144a, 146a, 18a, and 150a to flex downwards into contact with the hourglass seal 162 of the sealing assembly 160, thereby opening the central opening 163 of the hourglass seal 162 to allow the surgical instrument to pass through it. The protective assembly 130 minimizes damage to the sealing assembly 160 during instrument insertion through the valve assembly 120. The protective component 130 operates to protect the hourglass-shaped seal 162 of the sealing component 160 from tearing or other damage when surgical instruments are received through and removed from the sealing component 160.

[0087] Now see Figure 14-22 A valve assembly according to another embodiment of this disclosure is generally shown as valve assembly 220. Valve assembly 220 is substantially similar to valve assembly 120 described above. Figure 3 and 4 ), and will only describe the details of the differences between them.

[0088] First refer to Figure 14-16 Valve assembly 220 includes a centering mechanism 230, a protective assembly 240, a conical origami sealing assembly 260, and a retainer assembly 280. The centering mechanism 230 and the protective assembly 240 are substantially similar to the centering mechanism 130 and the protective assembly 140 described above.

[0089] See Figures 16 to 22 The sealing assembly 260 of the valve assembly 220 is configured to pass through the instrument valve housing 110 ( Figure 1The sealing assembly 260 provides a seal around the outer surface of the surgical instrument. The sealing assembly 260 includes a first flap or segment 262, a second flap or segment 264, a third flap or segment 266, a fourth flap or segment 268, a fifth flap or segment 270, and a sixth flap or segment 272, each having sealing portions 262a, 264a, 266a, 268a, 270a, and 272a, and corresponding base portions 262b, 264b, 266b, 268b, 270b, and 272b supporting the respective sealing portions 262a, 264a, 266a, 268a, 270a, and 272a. The first segment 262 and the second segment 264, the second segment 264 and the third segment 266, the third segment 266 and the fourth segment 268, the fourth segment 268 and the fifth segment 270, and the fifth segment 270 and the sixth segment 272 are respectively connected to each other via connector portions 262c, 264c, 266c, 268c and 270c.

[0090] The sealing portions 262a, 264a, 266a, 268a, 270a, and 272a of the respective first petal or segment 262, second petal or segment 264, third petal or segment 266, fourth petal or segment 268, fifth petal or segment 270, and sixth petal or segment 272 of the sealing assembly 260 are formed of an elastic material, such as rubber, and define a semi-conical shape. In an embodiment, the sealing assembly 260 is formed of polyisoprene or a silicone elastomer. The base portions 262b, 264b, 266b, 268b, 270b, and 272b of the corresponding first segments 262, second segments 264, third segments 266, fourth segments 268, fifth segments 270, and sixth segments 272 of the sealing assembly 260 may be formed of the same or different material as the corresponding sealing portions 262a, 264a, 266a, 268a, 270a, and 272a. In embodiments, the sealing portions 262a, 264a, 266a, 268a, 270a, and 272a may comprise one or more fabric layers.

[0091] The sealing portions 262a, 264a, 266a, 268a, 270a, and 272a of the first flap or segment 262, the second flap or segment 264, the third flap or segment 266, the fourth flap or segment 268, the fifth flap or segment 270, and the sixth flap or segment 272 of the sealing assembly 260 are configured to provide a seal around the outer surface of a surgical instrument (not shown) passing through the valve assembly 220. The sealing portions 262a, 264a, 266a, 268a, 270a, and 272a form a virtual inner circumferential surface for providing a seal around the surgical instrument received by the instrument valve housing 110. The base portions 262b, 264b, 266b, 268b, 270b, and 272b are substantially C-shaped members and each defines a plurality of openings 263, 265, 267, 269, 271, and 273, which correspond to a plurality of pins 288 extending from the upper retainer member 282 of the retainer assembly 280. Figure 16 ).

[0092] Reference Figures 18 to 22 This describes a method for folding a conical origami sealing assembly 260. First, refer to... Figure 18 The first segment 262 and the second segment 264 of the sealing assembly 260 are folded at the hinge portion 262 between the first segment 262 and the second segment 264 of the sealing assembly 260, as indicated by arrow "E", such that the length of the support portion 262b of the first segment 262 adjacent to the hinge portion 262c overlaps with the length of the support portion 264b of the second segment 264 of the sealing assembly 260 adjacent to the hinge portion 262c. In this manner, a plurality of openings 263 in the length of the support portion 262b of the first segment 262 adjacent to the hinge portion 262c are aligned with a plurality of openings 265 in the overlapping length of the support portion 264b of the second segment 264 of the sealing assembly 260 adjacent to the hinge portion 262c.

[0093] Turning Figure 19 The second segment 264 and the third segment 266 of the sealing assembly 260 are folded at the hinge portion 264c between the second segment 264 and the third segment 266, as indicated by arrow "F," such that the length of the support portion 264b of the second segment 264 adjacent to the hinge portion 264b overlaps with the length of the support portion 266b of the third segment 266 of the sealing assembly 260 adjacent to the hinge portion 264c. In this manner, a plurality of openings 265 in the length of the support portion 264b of the second segment 264 adjacent to the hinge portion 264c are aligned with a plurality of openings 267 in the overlapping length of the support portion 266b of the third segment 266 of the sealing assembly 260 adjacent to the hinge portion 264c.

[0094] See Figure 20The third segment 266 and the fourth segment 268 of the sealing assembly 260 are folded at the hinge portion 266c between the third segment 266 and the fourth segment 268, as indicated by arrow "G," such that the length of the support portion 266b of the third segment 266 adjacent to the hinge portion 266c overlaps with the length of the support portion 268b of the fourth segment 268 of the sealing assembly 260 adjacent to the hinge portion 266c. In this manner, a plurality of openings 267 in the length of the support portion 266b of the third segment 266 adjacent to the hinge portion 266c are aligned with a plurality of openings 269 in the overlapping length of the support portion 268b of the fourth segment 268 of the sealing assembly 260 adjacent to the hinge portion 266c.

[0095] refer to Figure 21 The fourth segment 268 and the fifth segment 270 of the sealing assembly 260 are folded at the hinge portion 268c between the fourth segment 268 and the fifth segment 270, as indicated by arrow "H," such that the length of the support portion 268b of the fourth segment 268 adjacent to the hinge portion 268c overlaps with the length of the support portion 270b of the fifth segment 270 of the sealing assembly 260 adjacent to the hinge portion 268c. In this manner, a plurality of openings 269 in the length of the support portion 268b of the fourth segment 268 adjacent to the hinge portion 268c are aligned with a plurality of openings 271 in the overlapping length of the support portion 270b of the fifth segment 270 of the sealing assembly 260 adjacent to the hinge portion 268c.

[0096] Turning Figure 22 The fifth segment 270 and the sixth segment 272 of the sealing assembly 260 are folded at the hinge portion 270c between the fifth segment 270 and the sixth segment 272, as indicated by arrow "I", such that the length of the support portion 270b of the fifth segment 270 adjacent to the hinge portion 270c overlaps with the length of the support portion 272b of the sixth segment 272 of the sealing assembly 260 adjacent to the hinge portion 270c. In this way, a plurality of openings 271 in the length of the support portion 270b of the fifth segment 270 adjacent to the hinge portion 270c are aligned with a plurality of openings 273 in the overlapping length of the support portion 272b of the sixth segment 270 of the sealing assembly 260 adjacent to the hinge portion 270c.

[0097] Return to view Figure 14-16The retainer assembly 280 of the valve assembly 220 is configured to fasten the protective assembly 240 relative to the sealing assembly 260, and to fasten the protective assembly 240 and the sealing assembly 260 to the centering mechanism 230. The retainer assembly 280 includes an upper retainer member 282 and a lower retainer member 284. As described above, the upper retainer member 282 includes a plurality of pins 288 extending from the bottom surface of the upper retainer 282. Figure 15 The bottom retainer 284 defines a plurality of openings 287 corresponding to the plurality of pins 288 in the upper retainer member 282. Figure 15 The plurality of pins 288 of the upper retainer member 282 are configured to be received in a locking manner within a plurality of openings 287 in the lower retainer member 282. In embodiments, the plurality of pins 288 of the upper retainer member 282 may be friction-fitted, welded, glued, adhered, engaged, or otherwise secured within the plurality of openings 287 in the lower retainer member 284. Alternatively, the lower retainer member 284 may include a locking feature (not shown) for engaging the plurality of pins 288 of the upper retainer member 282.

[0098] The plurality of pins 288 of the upper retainer member 282 extend through the ring portion 242 of the protective assembly 240, through the inner ring 234 of the centering mechanism 230, and through the base portions 262b, 264b, 266b, 268b, 270b, and 272b of the respective first section 262, second section 264, third section 266, fourth section 268, fifth section 270, and sixth section 272 of the sealing assembly 260.

[0099] Although the retainer assembly 280 is shown having the plurality of pins 288 extending from the upper retainer member 282, it is contemplated that the plurality of pins 288 may instead extend from the bottom retainer member 284, and / or the retainer assembly 280 may include a second plurality of pins (not shown) extending from the bottom retainer member 284.

[0100] In use, valve assembly 220 operates in a manner substantially similar to that of valve assembly 120 described above herein.

[0101] Now see Figures 23 to 35 A valve assembly according to another embodiment of this disclosure is generally shown as valve assembly 320. Valve assembly 320 is substantially similar to valve assembly 220 described above, and only details relating to the differences therebetween will be described.

[0102] First refer to Figures 23 to 25Valve assembly 320 includes a centering mechanism 330, a protective assembly 340, a sealing assembly 360, and a retainer assembly 380. The centering mechanism 330, the protective assembly 340, and the retainer assembly 380 are substantially similar to the centering mechanisms 130, 230, the protective assemblies 140, 240, and the retainer assembly 280 described above.

[0103] See Figures 26 to 35 The sealing assembly 360 of the valve assembly 320 is configured to pass through the instrument valve housing 110 ( Figure 1 A seal is provided around the outer surface of a surgical instrument (not shown). The sealing assembly 360 includes a first sealing member 362, a second sealing member 364, a third sealing member 366, and a fourth sealing member 368. The plurality of sealing members 362, 364, 366, and 368 form a virtual inner circumferential surface for providing a seal around the surgical instrument received through the instrument valve housing 110. Although shown as separate components, it is contemplated that the first sealing member 362, the second sealing member 364, the third sealing member 366, and the fourth sealing member 368 could be formed as a single component. The first sealing member 362, the second sealing member 364, and the third sealing member 366 are substantially similar.

[0104] Each of the first sealing member 362, the second sealing member 364, the third sealing member 366, and the fourth sealing member 368 of the sealing assembly 360 includes sealing portions 362a, 364a, 366a, and 368a, respectively supporting base portions 362b, 364b, 366b, and 368b of the corresponding sealing portions 362a, 364a, 366a, and 368a, respectively, and edge portions 362c, 364c, 366c, and 368c extending around the outer periphery of the corresponding base portions 362b, 364b, 366b, and 368b, respectively.

[0105] The sealing portions 362a, 364a, 366a, and 368a of the respective first member 362, second member 364, third member 366, and fourth member 368 of the sealing assembly 360 are formed of an elastic material, such as rubber. In an embodiment, the sealing assembly 360 is formed of polyisoprene or a silicone elastomer. The base portions 362b, 364b, 366b, and 368b of the respective first sealing member 362, second sealing member 364, third sealing member 366, and fourth sealing member 368 of the sealing assembly 360 may be formed of the same or different material as the respective sealing portions 362a, 364a, 366a, and 368a. In an embodiment, the sealing portions 362a, 364a, 366a, and 368a may comprise one or more fabric layers.

[0106] The sealing portions 362a, 364a, 366a, and 368a of the first sealing member 362, second sealing member 364, third sealing member 366, and fourth sealing member 368 of the sealing assembly 360 are respectively configured to provide a seal around the outer surface of the surgical instrument passing through the valve assembly 320. The first member 362, second member 364, third member 366, and fourth member 368 form a shape defining a wedge-shaped incision. The base portions 362b, 364b, 366b, and 368b and the edge portions 362c, 364c, 366c, and 368c are substantially C-shaped members. Each of the base portions 362b, 364b, 366b, and 368b defines a plurality of openings 363, 365, 367, and 369, respectively, which correspond to a plurality of pins 388 extending from the upper retainer member 382 of the retainer assembly 380. Figure 25 ).

[0107] The widths of the base portions 362b, 364b, 366b, and 368b of the first sealing member 362, the second sealing member 364, the third sealing member 366, and the fourth sealing member 368 of the sealing assembly 360 increase in a clockwise direction, as shown below. Figure 26 and 27 As seen in the image. Using this method... Figure 26 Taking the first sealing member 362 as an example, the distance “x1” between the edge portion 362c and the first opening 363a of the plurality of openings 363 of the base portion 362b is less than the distance “x2” between the edge portion 362c and the final opening 363b of the plurality of openings 363.

[0108] Each of the first sealing member 362, the second sealing member 364, and the third sealing member 366 of the sealing assembly 360 includes tabs 362d, 364d, and 366d extending from corresponding edge portions 362c, 364c, and 366c. Tabs 362d, 364d, and 366d facilitate assembly of the sealing assembly 360.

[0109] Reference Figures 28 to 35 This describes the method for assembling the sealing assembly 360. First, refer to... Figure 28 The first sealing member 360 of the sealing assembly 360 is positioned on the first orientation.

[0110] Turning Figure 29 and 30 The second sealing member 364 of the sealing assembly 364 is received within the edge portion 362c of the first sealing member 362. The second sealing member 364 is rotated off from the first sealing member 362. In an embodiment, the first sealing member 362 and the second sealing member 364 are rotated off by 90 degrees (90°), but other offsets are also contemplated.

[0111] refer to Figure 31 and 32 The third sealing member 366 of the sealing assembly 360 then rotates relative to the second sealing member 364 and is received within the edge portion 364c of the second sealing member 364 of the sealing assembly 360.

[0112] Turning Figures 33 to 35 The fourth sealing member 368 of the sealing assembly 360 then rotates relative to the third sealing member 366 and is received within the edge portion 366c of the third sealing member 366 of the sealing assembly 360.

[0113] Once assembled, the first sealing member 362, the second sealing member 364, the third sealing member 366, and the fourth sealing member 368 are connected by the upper retainer member 382 of the retainer assembly 380. Figure 25 Multiple pins 388 are fastened together.

[0114] Valve assembly 320 may be received within a device valve housing, such as device valve housing 100. Figure 1 ), and operate in a manner similar to the sealing components 120 and 220 described above.

[0115] Now see Figures 36 to 45 A sealing assembly according to another embodiment of this disclosure is generally shown as sealing assembly 460. Initial Reference Figures 36 to 39 The sealing assembly 460 includes a first sealing segment or member 462, a second sealing segment or member 464, a third sealing segment or member 466, a fourth sealing segment or member 468, a fifth sealing segment or member 470, and a sixth sealing segment or member 472. The first sealing segment or member 462, the second sealing segment or member 464, the third sealing segment or member 466, the fourth sealing segment or member 468, the fifth sealing segment or member 470, and the sixth sealing segment or member 472 may be stacked to form a seal having a virtual inner circumferential surface defining an opening 461 to facilitate the sealed passage of surgical instruments (not shown) through the sealing assembly 460. In an embodiment, the diameter of the opening 461 is between about 0.025” and about 0.100”.

[0116] refer to Figure 36 and 37The sealing assembly 460 defines a substantially flat hexagonal member. The hexagonal shape facilitates the assembly of the sealing assembly 460, allowing for rapid placement of the sealing segments relative to each other, and / or allowing for rapid visual inspection of the sealing assembly 460 to ensure proper assembly of the sealing segments 462, 464, 466, 468, 470, 472. By forming an opening 461 from multiple segments 462, 464, 466, 468, 470, 472—that is, forming a virtual inner circumferential surface—rather than as a continuous solid opening through a single sealing member, the likelihood of the sealing assembly 460 tearing during the insertion, removal, and / or use of surgical instruments through it is greatly reduced. Although shown comprising six (6) segments, it is envisioned that the sealing assembly 460 may comprise as few as four (4) segments and as many as eight (8) segments.

[0117] The first sealing segment 462, the second sealing segment 464, the third sealing segment 466, the fourth sealing segment 468, the fifth sealing segment 470, and the sixth sealing segment 472 of the sealing assembly 460 are formed of an elastic material, such as rubber, polyisoprene, or a silicone elastomer. In one embodiment, the sealing assembly 460 is formed of liquid silicone rubber (LSR). In another embodiment, the first segment 462, the second segment 464, the third segment 466, the fourth segment 468, the fifth segment 470, and the sixth segment 472 may comprise one or more fabric layers.

[0118] The first sealing segment 462, the second sealing segment 464, the third sealing segment 466, the fourth sealing segment 468, the fifth sealing segment 470 and the sixth sealing segment 472 of the sealing assembly 460 are substantially similar and will therefore be described in detail only with respect to the first sealing segment 462.

[0119] See specific Figure 38 and 39 The first sealing segment 462 of the sealing assembly 460 is substantially airfoil-shaped and configured to partially overlap with corresponding second sealing segments 464, third sealing segments 466, fourth sealing segments 468, fifth sealing segments 470, and sixth sealing segments 472 when the sealing assembly 460 is in an assembled or stacked configuration. The first sealing segment 462 includes a base portion 462a and a sealing portion 462b extending from the base portion 462a. The base portion 462a and the sealing portion 462b may be formed of the same or different materials.

[0120] The base portion 462a of the first sealing segment 462 of the sealing assembly 460 includes an outer edge 482. The outer edge 482 is formed by a first segment 482a, a second segment 482b, and a third segment 482c. As will be described in further detail below, the first segment 482a, the second segment 482b, and the third segment 482c of the outer edge 482 facilitate the assembly of the sealing assembly 460. The base portion 462a of the first sealing segment 462 defines a plurality of openings 463 to facilitate the assembly and retention of the sealing assembly 460 in a stacked configuration. Figure 36 More precisely, the plurality of openings 463 are configured to receive pins, such as instrument valve assembly 120. Figure 3 The retaining component 180 has a pin 188a. Figure 5 ), to be used to secure the sealing segments 462, 464, 466, 468, 470, 472 relative to each other.

[0121] Special Reference Figure 39 The sealing portion 462b of the first sealing segment 462 of the sealing assembly 460 may be radially inwardly tapered. As shown, the sealing portion 426b of the first sealing segment 462 is tapered at an angle “σ” between the leading and trailing portions of the sealing portion 462b. In embodiments, the angle “σ” is between approximately zero degrees (0°) and approximately 15 degrees (15°). The tapered sealing segment 462 may facilitate the reception of surgical instruments (not shown) through the sealing assembly 460 and / or may enhance the seal around the surgical instrument.

[0122] Continue reading Figure 38 and 39 The sealing portion 462b of the first sealing segment 462 of the sealing assembly 460 includes an inner edge 482'. The inner edge 482' may extend straight or may include a first segment 482a' and a second segment 482b' defining a V-shape (as shown). In an embodiment, the sealing portion 462b is defined at an angle between approximately 180 degrees and approximately 275 degrees (275 degrees). In one embodiment, and as shown, the sealing portion 462b defines an angle of 210 degrees (210 degrees).

[0123] Reference Figures 40 to 45 This describes the method for assembling the sealing assembly 460. First, refer to... Figure 40 The first sealing segment 462 of the sealing assembly 460 is placed flat. (Turn) Figure 41 The second sealing segment 464 is rotated 60 degrees counterclockwise relative to the first sealing segment 462, as shown in the figure, and overlaps with the first sealing segment 462 such that the first outer edge 484a and the second outer edge 484b of the second sealing segment 464 overlap with the second segment 482b and the third segment 482c of the first sealing segment 462. Figure 40)alignment.

[0124] refer to Figure 42 The third sealing segment 466 is rotated 60 degrees counterclockwise relative to the second sealing segment 464, as shown in the figure, and overlaps with the second sealing segment 464 such that the first outer edge 486a and the second outer edge 486b of the third sealing segment 466 overlap with the second segment 484b and the third segment 484c of the second sealing segment 464. Figure 41 )alignment.

[0125] For reference Figure 43 The fourth sealing segment 468 is rotated 60 degrees counterclockwise relative to the third sealing segment 466, as shown in the figure, and overlaps with the third sealing segment 466 such that the first outer edge 488a and the second outer edge 488b of the fourth sealing segment 468 overlap with the second segment 486b and the third segment 486c of the third sealing segment 466. Figure 42 )alignment.

[0126] Turning Figure 44 The fifth sealing segment 470 is rotated 60 degrees counterclockwise relative to the fourth sealing segment 468, as shown in the figure, and overlaps with the fourth sealing segment 468 such that the first outer edge 490a and the second outer edge 490b of the fifth sealing segment 470 overlap with the second segment 488b and the third segment 488c of the fourth sealing segment 468. Figure 43 )alignment.

[0127] Turning Figure 45 The sixth sealing segment 472 is rotated 60 degrees counterclockwise relative to the fifth sealing segment 470, as shown in the figure, and overlaps with the fifth sealing segment 470 such that the first outer edge 492a and the second outer edge 492b of the sixth sealing segment 472 overlap with the second segment 490b and the third segment 490c of the fifth sealing segment 470. Figure 44 Alignment. In an embodiment and as shown, a portion of the sixth sealing segment 472 of the sealing assembly 460 may be inserted below a portion of the first sealing segment 462 to increase the integrity of the sealing assembly 460.

[0128] In an assembled or stacked configuration, the sealing assembly 460 comprises a substantially planar body having a substantially uniform thickness. It is contemplated that aspects of this disclosure can be modified for use with an entry assembly having a substantially conical body.

[0129] Misalignment of any of the sealing segments of the sealing assembly 460 may compromise the integrity of the sealing assembly 460. As described above, the configuration of the sealing assembly 460 allows for visual inspection to determine whether the sealing assembly 460 is properly assembled.

[0130] The sealing assembly 460 can be modified for use in any of the aforementioned instrument valve assemblies.

[0131] Reference Figures 46 to 50 The following describes a centering mechanism according to alternative embodiments of the present disclosure. The centering mechanism will be described only to the extent necessary to fully disclose aspects of the present disclosure, and for a detailed description of the structure and function of exemplary centering mechanisms, please refer to commonly owned U.S. Patent Application Publication No. 2015 / 0025477 (“'477 Publication”), the contents of which are incorporated herein by reference in their entirety. It is contemplated that the centering mechanism may comprise two centering mechanisms, as disclosed in '477 Publication.

[0132] First refer to Figure 46 and 47 The centering mechanism according to an embodiment of the present disclosure is generally shown as a centering mechanism 530. The centering mechanism 530 is a component of the valve assembly 520 and is configured to allow the valve assembly 520 to be positioned relative to the instrument valve housing 110 when receiving a surgical instrument (not shown) through the valve assembly 520. Figure 1 The radial movement of the valve assembly 520, and once the surgical instrument is removed from the instrument valve housing 110, the valve assembly 520 returns to the center position.

[0133] The centering mechanism 530 includes a ring 532 and a plurality of spokes or spring elements 534 extending radially outward from the ring 532. Each of the plurality of spokes 534 of the centering mechanism 530 includes a free end 534a. The free ends 534a of the plurality of spokes 534 are configured to engage the instrument valve housing 110 when received within a cavity 115 defined by the inner housing section 116. Figure 1 The inner wall 116a of the internal shell section 116 of the ) Figure 47 In this way, the centering mechanism 530 is spring-loaded when received within the instrument valve housing 110, thereby providing improved springback to the valve assembly 520 when it moves off-center.

[0134] Special Reference Figure 48 In one embodiment, the plurality of spokes 534 may include one or more longitudinal ribs 536 extending along the length of the spokes 534. The ribs 536 reinforce the plurality of spokes 534 and provide increased resilience.

[0135] Turning Figure 49 and 50 Another centering mechanism according to an embodiment of the present disclosure is generally shown as centering mechanism 630. Centering mechanism 630 is substantially similar to centering mechanism 530 described above herein, and therefore will be described only with respect to the differences therebetween.

[0136] The centering mechanism 630 includes a ring 632 and a plurality of spokes or spring elements 634 extending radially outward from the ring 632. Each of the plurality of spokes 634 of the centering mechanism 630 includes a free end 634a. The free ends 634a of the plurality of spokes 634 are bent to provide increased springback to the valve assembly 620.

[0137] Although various embodiments of the present disclosure have been shown and described herein, it will be apparent to those skilled in the art that these embodiments are provided by way of example only. Many variations, modifications, and substitutions will now occur to those skilled in the art without departing from the present disclosure. Therefore, the present disclosure is limited only by the spirit and scope of the appended claims.

Claims

1. An entry component, comprising: Instrument valve housing, comprising upper, lower and inner housing sections and defining a cavity; as well as A valve assembly disposed within the cavity of the instrument valve housing, the valve assembly comprising: Protective components A sealing assembly, disposed adjacent to the protective assembly, comprises multiple segments, each segment having a sealing portion and a corresponding support portion supporting the respective sealing portion. Adjacent segments are connected to each other via connector portions. Adjacent segments of the sealing assembly are folded at hinge portions between the adjacent segments such that the length of the support portion of one of the adjacent segments adjacent to the hinge portion overlaps with the length of the support portion of the other of the adjacent segments adjacent to the hinge portion, thereby converting the multiple segments from an unfolded structure to a folded structure. as well as A centering mechanism for biasing the sealing assembly and the protective assembly toward the center of the cavity of the instrument valve; In the folded structure, the multiple segments form a hexagonal structure.

2. The access assembly of claim 1, wherein the sealing portions of the plurality of sections define an opening.

3. The access component of claim 2, wherein the opening has a diameter from 0.025” to 0.100”.

4. The entry component of claim 1, wherein the plurality of segments comprises six segments.

5. A sealing assembly for an instrument valve assembly, the sealing assembly comprising: The assembly comprises multiple segments, each having a sealing portion and a corresponding support portion supporting the sealing portion. Adjacent segments are connected to each other via connector portions. Adjacent segments of the sealing assembly are folded at a hinge portion between the adjacent segments such that the length of the support portion of one of the adjacent segments adjacent to the hinge portion overlaps with the length of the support portion of the other of the adjacent segments adjacent to the hinge portion, thereby converting the multiple segments from an unfolded structure to a folded structure. In the folded structure, the multiple segments form a hexagonal structure.

6. The sealing assembly of claim 5, wherein the sealing portions of the plurality of sections define an opening.

7. The sealing assembly of claim 6, wherein the opening comprises a diameter from 0.025” to 0.100”.

8. The sealing assembly of claim 5, wherein the plurality of sections comprises six sections.

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