Sealing assembly and poke card

Abstract

The present application relates to a contact sealing structure, a sealing assembly and a punch card, comprising a first sealing flange and a ring-shaped sealing element, wherein the first sealing flange is provided with at least one first through hole, and the ring-shaped sealing element is correspondingly connected at the first through hole, and the ring-shaped sealing element is provided with a deformation cavity, and the inner side of the side wall of the deformation cavity is provided with a sealing part, and the sealing part forms a contact seal with an operating instrument inserted therein. The sealing assembly of the punch card of the present application is provided with a deformation cavity on the contact sealing structure, and the sealing part is arranged on the inner side of the deformation cavity. When the operating instrument passes through the sealing part, the deformation cavity can provide a larger deformation space for the outward expansion or inward tightening of the sealing part, so that the sealing part can adapt to the passage of operating instruments with different outer diameters and provide good contact sealing effect, thereby improving the universality of the sealing assembly.

Description

Technical Field

[0001] This invention relates to a stamp card structure, and more particularly to a sealing component and a stamp card. Background Technology

[0002] The trocar is a commonly used tool in robotic abdominal surgery. During the procedure, an inflation needle is inserted into the patient's abdomen, and air is simultaneously inflated into the abdominal cavity to expand the space. Then, the trocar is inserted into the abdominal cavity to create a channel, facilitating the surgical operation. The importance of airtightness in this process is self-evident. To ensure that the gas in the patient's abdomen does not leak during the operation, existing trocars are equipped with a sealing structure. The sealing structure includes a sealing component for sealing when instruments are being operated on and a leak-proof seal for when no instruments are being operated on. The sealing component includes a sealing part with a central circular hole. The diameter of the circular hole is slightly smaller than the outer diameter of the instrument, so that when the instrument passes through the circular hole, the sealing part can seal against the outer wall of the instrument to form a contact seal.

[0003] Since multiple instruments are inserted into the abdominal cavity during surgery, and these instruments have different diameters, existing sealing components, which simply design the diameter of the central hole of the sealing part to be slightly smaller than the outer diameter of the instrument, cannot meet the insertion requirements of instruments with different diameters. This is because when an instrument with a larger outer diameter passes through the central hole, the central hole has a smaller allowable deformation, causing it to grip the outer wall of the instrument tightly. The friction between the central hole and the outer wall of the instrument is relatively large, making it difficult to insert or remove the instrument, which is not conducive to the normal operation of the surgery. It also reduces the versatility of the sealing components. Summary of the Invention

[0004] Therefore, it is necessary to provide a contact seal with a large allowable deformation of the sealing part, which can adapt to the insertion of operating instruments of different diameters.

[0005] This invention provides a sealing assembly comprising a lower housing, an upper cover covering an upper opening of the lower housing, and a contact seal disposed within the upper cover. The contact seal comprises a first sealing flange and an annular seal. The first sealing flange has at least one first through-hole, and the annular seal is correspondingly connected to the first through-hole. The annular seal has a deformation cavity, and a sealing portion is provided on the inner side wall of the deformation cavity. The sealing portion forms a contact seal with an operating instrument inserted therein. The annular seal comprises an annular inner liner and a sealing outer liner, the sealing outer liner covering the annular inner liner to form the deformation cavity. The contact seal further comprises a second sealing flange located below the first sealing flange. The annular inner liner is integrally connected between the first sealing flange and the second sealing flange. The second sealing flange has a second through-hole at a position corresponding to each first through-hole. The upper end of the annular inner liner is connected to the first through-hole, and the lower end is connected to the second through-hole. The second sealing flange has an anti-backflow sealing structure below the annular seal. The first and second through-holes are configured to allow the operating instrument to pass through.

[0006] The sealing part is configured to form a seal with the outer wall of the operating instrument when the operating instrument is inserted through the first perforation.

[0007] The backflow prevention sealing structure is configured to form a seal when the operating instrument is pulled out.

[0008] In one embodiment, the sidewall of the annular liner is recessed toward the axis of the annular seal, and the sealing outer sleeve completely covers the annular liner, with the recessed area of ​​the annular liner and the sealing outer sleeve sealingly forming the deformation cavity.

[0009] In one embodiment, the sealing jacket is disposed between the first sealing flange and the second sealing flange, and the second sealing flange is provided with a first air intake channel communicating with the deformation cavity.

[0010] In one embodiment, the annular liner includes an upper inclined wall inclined toward the axis of the annular seal and a lower inclined wall inclined away from the axis of the annular seal, and the sealing portion is disposed between the upper inclined wall and the lower inclined wall.

[0011] In one embodiment, the sidewalls of the annular liner are arc-shaped recesses toward the axis of the annular seal.

[0012] In one embodiment, the annular seal is an annular airbag, and the sealing portion is disposed on the inner side of the annular airbag.

[0013] In one embodiment, the annular airbag is provided with a second air intake channel.

[0014] In one embodiment, a third through hole is provided at a position corresponding to each of the first through holes on the upper cover.

[0015] In one embodiment, the anti-backflow sealing structure includes at least two flexible sealing sheets that are inclined downward in the axial direction of the anti-backflow sealing structure, and at least one sealing seam is formed at the position where two adjacent flexible sealing sheets are butted.

[0016] In one embodiment, the shape formed by the sealing seams is "one" character, "cross" character or "Y" character.

[0017] In one embodiment, the anti-backflow sealing structure includes a magnetic member and a closed-hole member. A fourth through hole with an axis coinciding with the axis of the annular sealing member is provided at the center of the magnetic member, and the closed-hole member is adsorbed to seal the fourth through hole.

[0018] The present invention also provides a puncture card, which includes a puncture card tube and the sealing component as described above. An installation hole is provided at the lower part of the lower housing, and the upper end of the puncture card tube is inserted into the installation hole.

[0019] For the contact seal of the present invention, since a deformation cavity is provided on the contact seal and the sealing part is arranged inside the deformation cavity, when the operating instrument passes through the sealing part, the deformation cavity can provide a large deformation space for the sealing part to expand outward or contract inward, so that the sealing part can adapt to the passage of operating instruments with different outer diameters and provide a good contact sealing effect, improving the universality of the sealing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the anti-leakage sealing structure of an embodiment of the present invention after removing the sealing outer sleeve and the second sealing flange;

[0021] Figure 2 Schematic diagram of the anti-leakage sealing structure of another embodiment of the present invention after removing the sealing outer sleeve;

[0022] Figure 3 Schematic diagram of the exploded structure of the sealing component of an embodiment of the present invention;

[0023] Figure 4 For Figure 3 Cross-sectional schematic diagram of the sealing component in the assembled state of the shown embodiment;

[0024] Figure 5 Schematic diagram of the decomposition of the sealing component of the puncture card of another embodiment of the present invention;

[0025] Figure 6 For Figure 5A cross-sectional schematic diagram of the assembled state of the sealing assembly of the stamp card in the embodiment shown;

[0026] Figure 7 This is a schematic diagram of the structure of an anti-backflow seal according to an embodiment of the present invention.

[0027] Among them, 100, upper cover; 101, first accommodating cavity; 102, third perforation; 200, lower shell; 201, second accommodating cavity; 202, opening; 203, mounting hole; 300, puncture tube; 1, contact seal; 10a, deformation cavity; 10b, sealing part; 11, first sealing flange; 11a, first perforation; 12, annular liner; 12a, upper inclined wall; 12b, lower inclined wall; 13, sealing outer sleeve; 14, second sealing flange; 14a, second perforation; 14b, first air inlet channel; 2, anti-backflow sealing structure; 21, flexible sealing sheet; 22, sealing seam; 23, magnetic component; 23a, fourth perforation; 24, closed-hole component. Detailed Implementation

[0028] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0029] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. When an element is considered to be "coupled" to another element, it can be directly coupled to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation. The terms "distal" and "proximal" used herein are directional terms commonly used in the field of interventional medical devices, where "distal" refers to the end away from the operator during the procedure, and "proximal" refers to the end closer to the operator during the procedure.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Combination Figure 1 , Figure 2 , Figure 3 , Figure 5 The diagram schematically illustrates a contact seal according to a preferred embodiment of the present invention, which includes a first sealing flange 11 and an annular seal (not labeled). The first sealing flange 11 has at least one first through hole 11a, and the annular seal is correspondingly connected to the first through hole 11a. The annular seal has a deformation cavity 10a, and a sealing portion 10b is provided on the inner side of the sidewall of the deformation cavity 10a. The sealing portion 10b forms a contact seal with an operating instrument inserted therein. The sealing portion 10b may be part of the sidewall of the annular seal, or other structures provided on the sidewall of the annular seal, such as an annular rib.

[0032] Typically, the diameter of the sealing part 10b is set slightly smaller than the outer diameter of the operating instrument to ensure that the side wall of the operating instrument can effectively contact and fit with the inner wall of the sealing part 10b, thereby ensuring the reliability of the seal. When the operating instrument is inserted into the sealing part 10b, the operating instrument will squeeze the sealing part 10b to expand outward. When the sealing part 10b expands outward, the deformation cavity 10a can provide a large deformation space to facilitate the outward expansion of the sealing part 10b, allowing the operating instrument to be smoothly inserted into the sealing part 10b. Therefore, the sealing part 10b can accommodate operating instruments of different outer diameters, thereby ensuring that the sealing assembly has a good contact sealing effect while improving the versatility of the sealing assembly.

[0033] In order to ensure that the deformation cavity 10a can provide a good deformation space, the materials constituting the deformation cavity 10a, including the material of the sealing part 10b, can be elastic materials, such as silicone or rubber.

[0034] More specifically, the annular seal includes an annular inner liner 12 and a sealing outer liner 13. The sidewall of the annular inner liner 12 is recessed toward the axis of the annular seal, and the sealing outer liner 13 completely covers the annular inner liner 12, so that the recessed area of ​​the annular inner liner 12 and the sealing outer liner 13 sealably form a deformable cavity 10a.

[0035] The deformable cavity 10a is an inflatable sealed cavity. It mainly relies on inflating the deformable cavity 10a to give it a certain rigidity to support the sealing part 10b, so as to ensure the sealing performance between the sealing part 10b and the side wall of the operating instrument. When the operating instrument is inserted into the sealing part 10b, the deformable cavity 10a will also be deformed by pressure, providing sufficient deformation space for the sealing part 10b to expand outward, so as to accommodate the passage of operating instruments with different outer diameters. When the operating instrument is withdrawn from the sealing part 10b, the annular inner liner 12 and the sealing part 10b will synchronously return to their original positions under the action of the air pressure in the deformable cavity 10a.

[0036] In order to meet the requirement of inflating the deformation cavity 10a, the contact seal of this embodiment of the invention also includes a second sealing flange 14 disposed at the bottom of the annular seal. The second sealing flange 14 has a second through hole 14a at a position corresponding to the first through hole 11a. The annular inner liner 12 is integrally connected between the first sealing flange 11 and the second sealing flange 14. The upper end of the annular inner liner 12 is connected to the first through hole 11a and the lower end is connected to the second through hole 14a. The sealing outer sleeve 13 is disposed between the first sealing flange 11 and the second sealing flange 14. The second sealing flange 14 has a plurality of first air intake channels 14b communicating with the deformation cavity 10a. One end of the first air intake channel 14b is connected to the deformation cavity 10a, and the other end is connected to the pipe (stamp tube 300) through which the puncture card is inserted into the abdominal cavity.

[0037] In this way, the gas in the abdominal cavity can be used to inflate the deformation cavity 10a, and the air pressure in the deformation cavity 10a is basically equal to the air pressure in the abdominal cavity, so as to ensure that the annular liner 12 is always in a bulging state to provide support for the sealing part 10b and ensure the contact sealing performance of the sealing part 10b. In addition, when the operating instrument passes through the sealing part 10b, the abdominal cavity is in an uninflated state, and the uninflated deformation cavity 10a does not provide support for the sealing part 10b or provides weak support, which makes it more convenient for the operating instrument to pass through the sealing part 10b.

[0038] like Figure 1 As shown, the annular liner 12 includes an upper inclined wall 12a inclined toward the axis of the annular seal and a lower inclined wall 12b inclined away from the axis of the annular seal, and a sealing part 10b is disposed between the upper inclined wall 12a and the lower inclined wall 12b.

[0039] When the operating instrument inserted into the sealing part 10b compresses the sealing part 10b to expand outward, the upper inclined wall 12a and the lower inclined wall 12b both swing or bend towards one side of the deformation cavity 10a to reduce the resistance to the outward expansion of the sealing part 10b. The deformation cavity 10a provides space for the sealing part 10b to expand outward. At the same time, the upper inclined wall 12a and the lower inclined wall 12b, under the action of their own restoring force, always have a tendency to return to their original position, so that the sealing part 10b can always hold the operating instrument tightly to ensure that the sealing part provides good contact sealing performance. When the operating instrument is withdrawn from the sealing part 10b, the upper inclined wall 12a and the lower inclined wall 12b return to their original position under the action of air pressure, and the sealing part 10b contracts inward to its original position. In addition, when the operating instrument moves back and forth in the sealing part 10b, the upper inclined wall 12a and the lower inclined wall 12b support the sealing part 10b, thereby reducing the dragging effect of the operating instrument on the sealing part 10b caused by friction.

[0040] like Figure 2As shown, in another embodiment, the sidewall of the annular liner 12 is concave in an arc shape toward the axis of the annular seal; preferably, it is an arc-shaped concave, but it can also be an elliptical or parabolic concave. The annular liner 12 of this structure mainly relies on the air pressure generated by the cavity 17 to provide support for the sealing part 10b. At this time, the wall thickness of the annular seal 12 is generally thin so as to provide good deformation conditions for the sealing part 10b.

[0041] In addition, in other embodiments, the annular seal can be configured as an annular airbag, with the sealing part 10b disposed inside the annular airbag and a second air intake channel provided on the annular airbag, to simplify the structure of the contact seal.

[0042] When the operating instrument is inserted into the sealing part, the cavity (deformation cavity) of the annular airbag is compressed and deformed, providing deformation space for the sealing part to expand outward. When the operating instrument is withdrawn from the sealing part, the cavity of the annular airbag and the sealing part synchronously return to their original positions.

[0043] Combination Figures 3 to 6 As shown, in order to solve the same problem, the present invention also provides a sealing assembly, including a contact seal 1, an upper cover 100 and a lower housing 200, wherein the upper cover 100 is provided with a first receiving cavity 101, the contact seal 1 is disposed in the first receiving cavity 101, the lower housing 200 is provided with a second receiving cavity 201, the upper part of the second receiving cavity 201 is provided with an opening 202, the upper cover 100 is covered on the opening 202, and the upper cover 100 is provided with a third through hole 102 at a position corresponding to each first through hole 11a; the sealing assembly also includes an anti-backflow sealing structure 2 disposed in the second receiving cavity 201 of the lower housing 200, the anti-backflow sealing structure 2 being located directly below the annular seal 12.

[0044] The anti-backflow sealing structure 2 includes at least two flexible sealing sheets 21 that are inclined downwards along the axis of the anti-backflow sealing structure 2. The flexible sealing sheets 21 are integrally connected to the lower edge of the second perforation 14a of the second sealing flange 14. At least one sealing seam 22 is formed at the joint position of two adjacent flexible sealing sheets 21. When the operating instrument passes through the anti-backflow sealing structure 2, the operating instrument opens the sealing seam 22 and passes through the sealing seam 22. When the operating instrument is pulled out of the anti-backflow sealing structure 2, the flexible sealing sheets 21 come together to close the sealing seam 22. At the same time, the air pressure in the puncture tube 300 also has the tendency to squeeze the flexible sealing sheets 21 and bring them together, making the sealing seam 22 tighter, thereby effectively preventing the leakage of gas in the surgical area of ​​the abdominal cavity.

[0045] Preferably, if there is one sealing seam 22, the shape formed by the sealing seam 22 can be a straight line; if there are two sealing seams 22, the shape formed by the sealing seams 22 can be a cross shape; if there are three sealing seams 22, the shape formed by the sealing seams 22 can be a Y shape. In short, a larger number of sealing seams 22 can facilitate the operation of instruments passing through the leak-proof seal 2.

[0046] like Figure 7 As shown, another type of anti-backflow sealing structure 2 is also disclosed in this embodiment of the invention. The anti-backflow sealing structure 2 includes a magnetic element 23 and a closed-hole element 24. The center of the magnetic element 23 is provided with a fourth through hole 23a whose axis coincides with the axis of the annular seal. The closed-hole element 24 is attracted and sealed to the fourth through hole 23a.

[0047] Since the magnetic component 23 has a fourth perforation 23a at its center, the magnetic attraction force is greatest at the fourth perforation 23a according to the distribution of magnetic lines of force of the magnetic component 23. Therefore, the closing component 25 always tends to move towards the fourth perforation 23a. When the operating instrument passes through the fourth perforation 23a, the closing component 25 is pushed to one side of the fourth perforation 23a by the operating instrument. When the operating instrument is pulled out of the fourth perforation 23a, the closing component 25 is quickly returned to the fourth perforation 23a due to the strong magnetic attraction force at the fourth perforation 23a, sealing the fourth perforation 23a. This can effectively prevent the leakage of gas in the surgical area of ​​the abdominal cavity.

[0048] To address the same problem, this embodiment of the invention also provides a stamp card, including a stamp card tube 300 and a sealing component of any of the above-described solutions. The stamp card tube 300 can be detachably connected to the sealing component or it can be permanently connected. For example, a detachable connection can be achieved by providing a mounting hole 203 at the lower part of the lower housing 200, with the upper end of the stamp card tube 300 inserted into the mounting hole 203. An annular sealing ring can be provided on the outer wall of the stamp card tube 300 to improve the sealing performance at the connection between the stamp card tube 300 and the mounting hole 203. This connection method is suitable for situations where the material of the stamp card tube 300 is different from that of the lower housing. For example, if the stamp card tube 300 is a metal tube, this connection method can be considered for reuse. Alternatively, the lower housing 200 and the stamp card tube 300 can be integrally formed to achieve a permanent connection, thereby simplifying the structure of the stamp card. This connection method is suitable for the use of disposable stamp cards.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A seal assembly characterized by, The sealing assembly includes a lower housing, an upper cover covering the upper opening of the lower housing, and a contact seal provided in the upper cover; the contact seal includes a first sealing flange and an annular seal, wherein at least one first through-hole is provided on the first sealing flange, the annular seal is correspondingly connected at the first through-hole, the annular seal has a deformation cavity, a sealing portion is provided on the inner side of the side wall of the deformation cavity, and the sealing portion forms a contact seal with the operating instrument inserted into it; the annular seal includes an annular inner lining and a sealing outer sleeve, and the sealing outer sleeve covers the annular inner lining to form the deformation cavity; the contact seal further includes a second sealing flange located below the first sealing flange, the annular inner lining is integrally connected between the first sealing flange and the second sealing flange, the second sealing flange is provided with a second through-hole at a position corresponding to each first through-hole, the upper end of the annular inner lining is connected to the first through-hole, and the lower end is connected to the second through-hole; the second sealing flange is provided with an anti-backflow sealing structure below the annular seal; the first through-hole and the second through-hole are configured to allow the operating instrument to pass through; The sealing portion is configured to form a seal with the outer wall of the operating instrument when the operating instrument is inserted through the first through-hole; The anti-backflow sealing structure is configured to form a seal when the operating instrument is withdrawn.

2. The seal assembly of claim 1, wherein, The side wall of the annular inner lining is recessed towards the axis of the annular seal, the sealing outer sleeve entirely covers the annular inner lining, and the recessed area of the annular inner lining and the sealing outer sleeve are hermetically enclosed to form the deformation cavity.

3. The seal assembly of claim 2, wherein, The sealing outer sleeve is provided between the first sealing flange and the second sealing flange, and the second sealing flange is provided with a first air inlet channel communicating with the deformation cavity.

4. The seal assembly of claim 2 or 3, wherein, The annular inner lining includes an upper inclined wall inclined towards the axis of the annular seal and a lower inclined wall inclined away from the axis of the annular seal, and the sealing portion is provided between the upper inclined wall and the lower inclined wall.

5. The seal assembly of claim 2 or 3, wherein, The side wall of the annular inner lining is arcuately recessed towards the axis of the annular seal.

6. The seal assembly of claim 1, wherein, The annular seal is an annular airbag, and the sealing portion is provided inside the annular airbag.

7. The seal assembly of claim 6, wherein, The annular airbag is provided with a second air inlet channel.

8. The seal assembly of claim 1, wherein, The upper cover is provided with a third through-hole at a position corresponding to each first through-hole.

9. The seal assembly of claim 1, wherein, The anti-backflow sealing structure includes at least two flexible sealing sheets inclined downward in the direction of the axis of the anti-backflow sealing structure, and at least one sealing seam is formed at the position where adjacent two flexible sealing sheets are butted.

10. The seal assembly of claim 9, wherein, The shape formed by the sealing seam is "one", "cross" or "Y".

11. The seal assembly of claim 1, wherein, The anti-backflow sealing structure includes a magnetic member and a closing member, a fourth through-hole with an axis coinciding with the axis of the annular seal is provided at the center of the magnetic member, and the closing member is adsorbed to seal the fourth through-hole.

12. A postcard, characterized in that It includes a trocar tube and the sealing assembly according to any one of claims 1 to 11, an installation hole is provided at the lower part of the lower housing, and the upper end of the trocar tube is inserted into the installation hole.

Images