WO2022048503A1 - 用于穿刺器的耐压密封圈及穿刺器鞘管和穿刺器 - Google Patents

用于穿刺器的耐压密封圈及穿刺器鞘管和穿刺器 Download PDF

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Publication number
WO2022048503A1
WO2022048503A1 PCT/CN2021/115067 CN2021115067W WO2022048503A1 WO 2022048503 A1 WO2022048503 A1 WO 2022048503A1 CN 2021115067 W CN2021115067 W CN 2021115067W WO 2022048503 A1 WO2022048503 A1 WO 2022048503A1
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WO
WIPO (PCT)
Prior art keywords
sealing ring
pressure
resistant sealing
resistant
trocar
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PCT/CN2021/115067
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English (en)
French (fr)
Inventor
周星
Original Assignee
周星
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Publication date
Application filed by 周星 filed Critical 周星
Publication of WO2022048503A1 publication Critical patent/WO2022048503A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B2017/3454—Details of tips

Definitions

  • the invention relates to a laparoscopic surgical instrument, in particular to a pressure-resistant sealing ring of a trocar used in laparoscopic surgery, and a trocar sheath and trocar containing the pressure-resistant sealing ring.
  • the silicone material is very soft, the positioning ability of the incision of the sealing ring is relatively weak while reducing the movement resistance.
  • the incision of the silicone sealing ring may be dislocated, especially When the silicone sealing ring has lubricating fluid, the incision of the silicone sealing ring is prone to dislocation, resulting in reduced sealing performance and even sealing failure. In severe cases, the operation process will be interrupted, resulting in clinical accidents.
  • This patent application is a further improvement of the sealing ring in the prior art trocar, so as to improve the sealing stability of the sealing ring under the state of relatively high intra-abdominal static pressure, and better prevent the sealing ring from being in the relatively high intra-abdominal static pressure state.
  • the seal failure under static pressure ensures the smooth progress of the operation.
  • the characteristics of the pressure-resistant sealing ring used for the puncture device of the present invention is that a reset mechanism with positioning ribs is provided on the outer side of the supporting surface of the sealing ring, and through the mutual support between the matching surfaces of the positioning ribs, the sealing ring can be In the state of high intra-abdominal static pressure, the incision of the sealing ring is not easy to be dislocated, thereby effectively preventing the sealing failure of the sealing ring in the state of high intra-abdominal static pressure.
  • the pressure-resistant sealing ring for a trocar of the present invention is characterized in that: the pressure-resistant sealing ring 1 includes a cutout 11, a support surface 12, an end sealing surface 13 and a reset mechanism 20;
  • the incision 11 through which the surgical instrument can pass is provided in the central portion of the support surface 12;
  • the reset mechanism 20 is provided on the support surface 12;
  • the central part of the support surface 12 is provided with the cutout 11 , and the edge of the support surface 12 is connected to the end sealing surface 13 .
  • the reset mechanism 20 When the instrument enters, the reset mechanism 20 can expand outwards without hindering the movement of the instrument. When the instrument is removed, the reset mechanism 20 returns to the support state, which can provide support for the support surface 12, so that all The incision 11 is not easy to be dislocated, and can maintain good sealing performance even in the state of high intra-abdominal static pressure.
  • the reset mechanism 20 is arranged on the outer side of the support surface 12 .
  • the reset mechanism 20 is preferably arranged on the outer side of the support surface 12 , so that the inner side of the pressure-resistant sealing ring 1 can be kept smooth, and the reset mechanism 20 can prevent the movement of the instrument from being hindered by the reset mechanism 20 .
  • the reset mechanism 20 includes a positioning edge 20-1.
  • Each of the reset machines 20 includes at least one pair of mutually matched positioning edges 20-1.
  • the height of the matching surface 20-11 of the positioning edge 20-1 is not less than 0.3 mm.
  • the reset mechanism 20 usually realizes the reset support to the support surface 12 by the mutually matched positioning ribs 20 - 1 with a certain height.
  • the positioning edges 20-1 that cooperate with each other each have a mating surface 20-11 that can cooperate with each other.
  • the mating surface 20-11 has a certain height, usually a height of more than 0.3 mm has a better supporting effect .
  • the intra-abdominal static pressure When the intra-abdominal static pressure is high, such as reaching 4KPa, the intra-abdominal static pressure Under the action of the locating edge 20-11, the mating surfaces 20-11 fit and support each other to form surface contact, and it is not easy to shift in the height direction. dislocation, so that the sealing performance of the pressure-resistant sealing ring 1 under high static pressure can be better ensured.
  • the positioning rib 20-1 and the supporting surface 12 are integrally manufactured. Usually, the positioning rib 20 - 1 is directly and integrally fabricated on the outer side of the supporting surface 12 , and can well move along with the movement of the supporting surface 12 .
  • the pressure-resistant sealing ring 1 includes at least one cutout 11 .
  • the pressure-resistant sealing ring 1 contains at least one of the incisions 11 for instruments to pass through.
  • usually a plurality of the incisions 11 can be provided, and the incisions 11 can be arranged in different directions, so that the instruments can enter and exit more conveniently.
  • the pressure-resistant sealing ring 1 includes two incisions 11 , and the two incisions 11 are crossed. With the distribution in a crisscross manner, when the instrument enters, the incision 11 is opened to all sides at the same time, and instruments of any shape can easily enter and exit, and the movement resistance is very small.
  • the supporting surface 12 of the pressure-resistant sealing ring 1 forms 4 pairs of supporting inclined surfaces 12-1 along the two crossed incisions 11; each pair of the supporting inclined surfaces 12-1 is connected to each other, and the connecting ridges 12 are formed at the connection.
  • the supporting slope 12-1 is recessed toward the inner side of the sealing ring 1 along the connecting edge line 12-11; the connecting edge line 12-11 forms an instrument contact edge 12-3 on the inside, and the contact The rib 12-3 protrudes inwardly, reducing the contact area between the instrument and the sealing ring 1; the outer side of the supporting slope 12-1 is symmetrically distributed with the reset mechanism 20 along both sides of the connecting ridge line 12-11
  • the position of the positioning edge 20-1, the position of the positioning groove 20-2 formed between the positioning edges 20-1 coincides with the connecting edge line 12-11, and is arranged on the outer side of the supporting slope 12-1.
  • the supporting inclined surface 12-1 moves outward and expands, the incision 11 opens to four sides at the same time, and the positioning edge 20-1 disposed on the outer side of the supporting inclined surface 12-1 also moves outward along with it. Since the instrument is only in contact with the front end of the contact ridge 12-3 formed by the connecting ridge 12-11 on the inner side, the contact area is very small, and the frictional force of movement is very small, and the instrument can be smoothly removed from the incision 11. into the body, keeping the resistance to movement low.
  • the supporting slope 12-1 is quickly recessed inward along the connecting ridge line 12-11, so that the incision 11 quickly returns to the closed state, and the positioning ridge 20-1 also moves inward accordingly , the recovery to the state of reset support.
  • the mating surfaces 20-11 are attached to each other to form a surface contact mode, which forms a good support for the incision 11, even if the pressure is high, because the mating surfaces 20-11
  • the incisions 11 are not easily dislocated with each other, thus effectively ensuring that the incisions 11 can remain closed even under the action of high pressure, so as to have a good clinical sealing effect.
  • the pressure-resistant sealing ring 1 includes three incisions 11 , and the three incisions 11 cross each other in a Y-shape at the apex.
  • the distribution of the Y-shaped cross means that when the instrument enters, the incisions 11 are opened in three directions of the Y-shaped simultaneously, which can also ensure very low resistance to movement.
  • the supporting surface 12 of the pressure-resistant sealing ring 1 forms 3 pairs of supporting inclined surfaces 12-1 along the three Y-shaped cross-cuts 11; each pair of the supporting inclined surfaces 12-1 is connected to each other, and the connecting ridges are formed at the joints. 12-11, the supporting slope 12-1 is recessed toward the inner side of the sealing ring 1 along the connecting ridgeline 12-11; The contact edge 12-3 protrudes inward to reduce the contact area between the instrument and the sealing ring 1; the outer side of the support slope 12-1 is symmetrically distributed with the reset mechanism along both sides of the connecting edge 12-11 20, the position of the positioning groove 20-2 formed between the positioning edges 20-1 coincides with the connecting edge 12-11, and is arranged on the outer side of the supporting slope 12-1.
  • the supporting slope 12-1 moves outward and expands, the incision 11 expands along the three directions of the Y-shaped structure, and the positioning edge 20-1 disposed on the outside of the supporting slope 12-1 is also With the outward movement, since the instrument only contacts the front end of the contact edge 12-3 formed by the connecting edge 12-11 on the inner side, the contact area is very small, and the frictional force of movement is very small, so the instrument can be smoothly moved from The incision 11 enters the body, keeping the movement resistance low.
  • the supporting slope 12-1 is quickly recessed inward along the connecting ridge line 12-11, so that the incision 11 quickly returns to the closed state, and the positioning ridge 20-1 also moves inward accordingly , the recovery to the state of reset support.
  • the mating surfaces 20 - 11 are in contact with each other to form a surface contact mode, which forms a good support for the incision 11 . Even if the pressure is high, due to the good supporting effect between the mating surfaces 20-11, the cutouts 11 are not easily displaced from each other, thus effectively ensuring that the cutouts 11 can be maintained even under high pressure. closed for a good clinical seal.
  • the Y-shaped structure is a three-way structure that cooperates with each other, which has better space fixing effect than the crisscross structure, and has better stability for large-diameter sealing rings.
  • the pressure-resistant sealing ring 1 further includes a sealing bead 14; the sealing bead 14 is arranged on the inner side of the end sealing surface 13 and protrudes upward.
  • the sealing bead 14 can further enhance the end sealing effect of the pressure-resistant sealing ring 1 .
  • the sealing bead 14 is an annular structure, and a leading angle 14-1 is provided on the raised edge of the sealing bead 14.
  • the pressure-resistant sealing ring 1 also includes a flanging 15, a flanging reinforcing rib 16, and a mounting groove 17;
  • the flanging 15 is arranged on the outer side of the end sealing surface 13 and protrudes downward;
  • the flanging reinforcing rib 16 is arranged below the flange 15 and is connected to the flange 15;
  • a mounting groove is formed between the sealing flange 14, the end sealing surface 13, the flange 15 and the flange reinforcement 16 Hole 17;
  • the central part of the support surface 12 is connected to the incision 11, and the edge of the support surface 12 is connected to the sealing flange 14, the end sealing surface 13, the flange 15, and the flange in sequence Side stiffeners 16.
  • the embracing force of the pressure-resistant sealing ring 1 during installation is increased, thereby greatly increasing the resistance of the pressure-resistant sealing ring 1 when it falls off, which can better avoid the The slippage of the pressure sealing ring 1 is safer for clinical use.
  • the flanged reinforcing rib 16 is provided with an installation gap 16-2.
  • the installation notch 16-2 can make the installation process more convenient.
  • the end sealing surface 13 , the flange 15 and the flange reinforcement 16 are all annular structures.
  • the pressure-resistant sealing ring 1 is integrally made of medical elastic materials.
  • the pressure-resistant sealing ring 1 can be made of medical silica gel as a whole, so as to ensure low motion resistance, and provide a good static pressure stability through the reset mechanism 20, and the medical material also has good clinical biological properties. safety.
  • the sheath tube of the trocar of the present invention includes the pressure-resistant sealing ring 1 .
  • the sheath 100 is composed of an end seal assembly 101 and a cannula assembly 102 .
  • the casing assembly 102 includes the pressure-resistant sealing ring 1 , the casing cover 2 , the casing 3 , the casing 4 and the switch 5 .
  • the pressure-resistant sealing ring 1 is inlaid and fixed on the end of the sleeve 3 through the concave-convex snap fit between the sleeve cover 2 and the sleeve outer 4 , wherein the sleeve cover 2 is
  • the convex step 2-1 is embedded in the connecting groove 4-1 of the sleeve casing 4; the installation groove 17 of the pressure sealing ring 1 and the sealing convex step 3-1 of the sleeve 3 form a matching seal ;
  • the flange 15 of the pressure sealing ring 1, and the weak area 16-1 of the connection area between the flange 15 and the flange reinforcement 16 are covered by the outer wall 2- 2. Press down; the flanged reinforcement rib 16 of the pressure-resistant sealing ring 1 is installed in the gap between the casing cover 2 and the casing 4 .
  • the trocar of the present invention includes the sheath 100 of the trocar. Further, the trocar 900 is composed of a sheath tube 100 and a puncture rod 200 .
  • the pressure-resistant sealing ring of the present invention includes a cutout 11 , a support surface 12 , an end sealing surface 13 and a reset mechanism 20 .
  • the central portion of the support surface 12 is provided with the cutout 11 , and the edge of the support surface 12 is connected to the end sealing surface 13 .
  • the reset mechanism 20 is provided on the outer side of the support surface 12, and the reset mechanism 20 is usually supported by the mutually matched positioning ribs 20-1 with a certain height to realize the reset support of the support surface 12.
  • the positioning edges 20-1 that cooperate with each other each have a mating surface 20-11 that can cooperate with each other.
  • the mating surface 20-11 has a certain height, usually a height of more than 0.3 mm has a better supporting effect .
  • the puncture device of the present invention containing the pressure-resistant sealing ring of the present invention also has good and stable sealing performance under the state of high static pressure.
  • FIG. 1 is a schematic three-dimensional structure diagram of the pressure-resistant sealing ring of the present invention with a cross-shaped cutout.
  • Fig. 1-1 is an enlarged view of part A of Fig. 1 .
  • FIG. 1 is a front view of FIG. 1 .
  • Fig. 1-3 is a sectional view taken along line B-B of Fig. 1-2.
  • FIG. 1-4 are schematic diagrams of the structure of the pressure-resistant sealing ring of the present invention when the incision is opened.
  • FIGS. 1-5 are schematic diagrams of the structure of the sheath tube of the present invention with a crisscross-shaped notch pressure-resistant sealing ring.
  • Figures 1-6 are schematic views of the structure of the trocar of the present invention with a crisscross-shaped incision pressure-resistant sealing ring.
  • FIG. 2 is a schematic three-dimensional structure diagram of the pressure-resistant sealing ring of the present invention with a Y-shaped cutout.
  • FIG. 2-1 is an enlarged view of C in FIG. 2 .
  • FIG. 2-2 is a top view of FIG. 2 .
  • Figure 2-3 is a cross-sectional view taken along line D-D of Figure 2-2.
  • FIGS. 2-4 are schematic views of the structure of the sheath tube of the present invention with a Y-shaped notch pressure-resistant sealing ring.
  • FIGS. 2-5 are schematic views of the structure of the trocar of the present invention with a Y-shaped notch pressure-resistant sealing ring.
  • 100 is the trocar sheath of the present invention
  • 101 is the end seal assembly of the trocar sheath of the present invention
  • 102 is the sleeve assembly of the trocar sheath of the present invention
  • 200 is the puncture rod of the trocar of the present invention
  • 900 It is the puncture device of the present invention.
  • 1 is the pressure-resistant sealing ring for the trocar according to the present invention
  • 2 is the casing cover
  • 3 is the casing
  • 4 is the casing of the casing
  • 5 is the switch.
  • 11 is the incision
  • 12 is the supporting surface
  • 13 is the end sealing surface
  • 14 is the sealing protrusion
  • 15 is the flanging
  • 16 is the flanging reinforcing rib
  • 17 is the installation groove
  • 20 is the reset mechanism.
  • 12-1 is the supporting slope
  • 12-11 is the connecting edge
  • 12-3 is the contact edge
  • 14-1 is the guide angle on the sealing protrusion.
  • 16-2 is the gap of the flanging reinforcing rib.
  • 20-1 is the positioning edge, and 20-11 is the mating surface.
  • 2-1 is the convex step on the casing cover
  • 2-2 is the outer wall of the casing cover.
  • 3-1 is the sealing convex step of the casing.
  • 4-1 is the connecting groove of the casing
  • Example 1 The pressure-resistant sealing ring of the present invention with a cross-shaped cutout
  • the pressure-resistant sealing ring 1 of this embodiment includes a cutout 11 , a support surface 12 , an end sealing surface 13 and a reset mechanism 20 .
  • the incision 11 through which the surgical instrument can pass is provided in the central portion of the support surface 12 .
  • the central portion of the support surface 12 is provided with the cutout 11 , and the edge of the support surface 12 is connected to the end sealing surface 13 .
  • the reset mechanism 20 is disposed outside the support surface 12 .
  • the reset mechanism 20 is preferably arranged on the outer side of the support surface 12 , so that the inner side of the pressure-resistant sealing ring 1 can be kept smooth, and the reset mechanism 20 can prevent the movement of the instrument from being hindered by the reset mechanism 20 .
  • the reset mechanism 20 includes a positioning edge 20-1.
  • each of the reset machines 20 includes a pair of mutually matched positioning edges 20-1.
  • the height of the matching surface 20-11 of the positioning edge 20-1 is not less than 0.3 mm.
  • the reset mechanism 20 usually realizes the reset support to the support surface 12 by the mutually matched positioning ribs 20 - 1 with a certain height.
  • the positioning edges 20-1 that cooperate with each other each have a mating surface 20-11 that can cooperate with each other.
  • the mating surface 20-11 has a certain height, usually a height of more than 0.3 mm has a better supporting effect .
  • the positioning rib 20-1 and the supporting surface 12 are integrally made of medical silica gel.
  • the positioning rib 20 - 1 is directly and integrally fabricated on the outer side of the supporting surface 12 , and can well move along with the movement of the supporting surface 12 .
  • the medical silica gel material provides a good static pressure stability through the reset mechanism 20 while ensuring low motion resistance, and the medical silica gel material also has very good biological safety for clinical use.
  • the pressure-resistant sealing ring 1 includes two incisions 11 , and the two incisions 11 are crossed. With the distribution in a crisscross manner, when the instrument enters, the incision 11 is opened to all sides at the same time, and instruments of any shape can easily enter and exit, and the movement resistance is very small.
  • each pair of the supporting inclined surfaces 12-1 is mutually
  • a connecting ridgeline 12-11 is formed at the connection, and the supporting slope 12-1 is recessed toward the inside of the sealing ring 1 along the connecting ridgeline 12-11;
  • the connecting ridgeline 12-11 constitutes an instrument on the inside
  • the outer side of the supporting slope 12-1 is along the two sides of the connecting edge
  • the positioning edges 20-1 of the reset mechanism 20 are distributed symmetrically on the side, and the positions of the positioning grooves 20-2 formed between the positioning edges 20-1 coincide with the connecting edge lines 12-11, and are arranged on the support Outside of bevel 12-1.
  • the supporting inclined surface 12-1 moves outward and expands, and the incision 11 opens to four sides at the same time, and the positioning edge 20- 1 also moves outward. Since the instrument only contacts the front end of the contact ridge 12-3 formed by the connecting ridge line 12-11 on the inner side, the contact area is very small, the movement friction is very small, and the instrument can be very smooth. into the body from the incision 11, keeping the movement resistance low.
  • the supporting slope 12-1 is quickly recessed inward along the connecting ridge line 12-11, so that the incision 11 quickly returns to the closed state, and the positioning ridge 20-1 also moves inward accordingly , the recovery to the state of reset support.
  • the mating surfaces 20-11 fit each other to form a surface contact mode, which is not easy to be displaced in the height direction, and forms a good support for the incision 11, even if the pressure is high , due to the good support between the mating surfaces 20-11, the incisions 11 are not easy to dislocate each other, thereby effectively ensuring that the incisions 11 can remain closed even under the action of high pressure, thereby having Good clinical sealing effect.
  • the pressure-resistant sealing ring 1 further includes a sealing bead 14 ; the sealing bead 14 is provided on the inner side of the end sealing surface 13 and protrudes upward.
  • the sealing bead 14 can further enhance the end sealing effect of the pressure-resistant sealing ring 1 .
  • the sealing bead 14 is an annular structure, and a leading angle 14-1 is provided on the raised edge of the sealing bead 14.
  • the pressure-resistant sealing ring 1 also includes a flanging 15, a flanging reinforcing rib 16, and a mounting groove 17;
  • the flanging 15 is arranged on the outer side of the end sealing surface 13 and protrudes downward;
  • the flanging reinforcing rib 16 is arranged below the flange 15 and is connected to the flange 15;
  • a mounting groove is formed between the sealing flange 14, the end sealing surface 13, the flange 15 and the flange reinforcement 16 Hole 17;
  • the central part of the support surface 12 is connected to the incision 11, and the edge of the support surface 12 is connected to the sealing flange 14, the end sealing surface 13, the flange 15, and the flange in sequence Side stiffeners 16.
  • the embracing force of the pressure-resistant sealing ring 1 during installation is increased, thereby greatly increasing the resistance of the pressure-resistant sealing ring 1 when it falls off, which can better avoid the The slippage of the pressure sealing ring 1 is safer for clinical use.
  • the end sealing surface 13 , the flange 15 and the flange reinforcement 16 are all annular structures.
  • the flanged reinforcing rib 16 is provided with an installation gap 16-2.
  • the installation notch 16-2 can make the installation process more convenient.
  • the pressure-resistant sealing ring of this embodiment has a good supporting and fixing effect on the supporting edge 12 through the cooperating positioning edges 20-1, which effectively ensures that the incision 11 is safe even under high pressure. Can remain closed, resulting in a good clinical sealing effect.
  • Example 2 Pressure-resistant sealing ring of the present invention with Y-shaped notch
  • the cutout 11 is a Y-shaped cutout.
  • the pressure-resistant sealing ring 1 includes three incisions 11 , and the three incisions 11 intersect in a Y-shape at the apex.
  • the distribution of the Y-shaped cross means that when the instrument enters, the incisions 11 are opened in three directions of the Y-shaped simultaneously, which can also ensure very low resistance to movement.
  • the supporting surface 12 of the pressure-resistant sealing ring 1 forms 3 pairs of supporting inclined surfaces 12-1 along the three Y-shaped incisions 11; each pair of the supporting inclined surfaces 12-1 Connected to each other, a connecting ridgeline 12-11 is formed at the connection, and the supporting slope 12-1 is recessed toward the inside of the sealing ring 1 along the connecting ridgeline 12-11; the connecting ridgeline 12-11 is formed on the inside
  • the device contacts the edge 12-3, the contact edge 12-3 protrudes inwardly, reducing the contact area between the device and the sealing ring 1; the outer side of the supporting slope 12-1 is along the connecting edge 12-11
  • the positioning edges 20-1 of the reset mechanism 20 are symmetrically distributed on both sides, and the positions of the positioning grooves 20-2 formed between the positioning edges 20-1 coincide with the connecting edges 12-11, and are arranged on the Support the outside of the inclined plane 12-1.
  • the supporting slope 12-1 moves outward and expands, the incision 11 expands along the three directions of the Y-shaped structure, and the positioning edge 20-1 disposed on the outside of the supporting slope 12-1 is also With the outward movement, since the instrument only contacts the front end of the contact edge 12-3 formed by the connecting edge 12-11 on the inner side, the contact area is very small, and the frictional force of movement is very small, so the instrument can be smoothly moved from The incision 11 enters the body, keeping the movement resistance low.
  • the supporting slope 12-1 is quickly recessed inward along the connecting ridge line 12-11, so that the incision 11 quickly returns to the closed state, and the positioning ridge 20-1 also moves inward accordingly , the recovery to the state of reset support.
  • the mating surfaces 20 - 11 are in contact with each other to form a surface contact mode, which is not easy to be displaced in the height direction, and forms a good support for the incision 11 . Even if the pressure is high, due to the good supporting effect between the mating surfaces 20-11, the cutouts 11 are not easily displaced from each other, thus effectively ensuring that the cutouts 11 can be maintained even under high pressure. closed for a good clinical seal.
  • the Y-shaped structure is a three-way structure that cooperates with each other, which has a better space fixing effect than the crisscross structure. Therefore, compared with the first embodiment, the pressure-resistant sealing ring of this embodiment has a large diameter state. better stability.
  • Embodiment 3 the sheath tube of the trocar of the present invention
  • the sheath tube 100 of the trocar contains the pressure-resistant sealing ring 1 described in Embodiment 1.
  • the sheath tube 100 of the trocar contains the pressure-resistant sealing ring 1 described in the second embodiment.
  • the sheath 100 is composed of an end seal assembly 101 and a cannula assembly 102 .
  • the casing assembly 102 includes the pressure-resistant sealing ring 1 , the casing cover 2 , the casing 3 , the casing 4 and the switch 5 .
  • the pressure-resistant sealing ring 1 is inlaid and fixed on the end of the sleeve 3 through the concave-convex snap fit between the sleeve cover 2 and the sleeve outer 4 , wherein the sleeve cover 2 is
  • the convex step 2-1 is embedded in the connecting groove 4-1 of the sleeve casing 4; the installation groove 17 of the pressure sealing ring 1 and the sealing convex step 3-1 of the sleeve 3 form a matching seal ;
  • the flange 15 of the pressure-resistant sealing ring 1 is pressed by the outer wall 2-2 of the casing cover 2; the flanged reinforcement 16 of the pressure-resistant sealing ring 1 is installed on the casing cover 2 and the in the gap of the sleeve casing 4.
  • the installation groove 17 of the pressure-resistant sealing ring 1 forms a matching seal with the sealing convex step 3-1 of the sleeve 3; Press tightly; the flanged reinforcement rib 16 of the pressure-resistant sealing ring 1 is installed in the gap between the sleeve cover 2 and the sleeve casing 4; especially the existence of the flanged reinforcement rib 16 increases the resistance to The encircling force of the pressure sealing ring 1 when installed, thereby greatly increasing the resistance of the pressure sealing ring 1 when it falls off.
  • sheath tube of the trocar of this embodiment contains the pressure-resistant sealing ring 1, it can maintain a good and stable sealing effect even under the action of a relatively high pressure.
  • Example 4 The trocar of the present invention
  • the puncture device 900 of the present invention includes the pressure-resistant sealing ring 1 described in the first embodiment.
  • the puncture device 900 of the present invention includes the pressure-resistant sealing ring 1 described in the second embodiment.
  • the trocar 900 is composed of a sheath tube 100 and a puncture rod 200 .
  • a puncture rod 200 is added, that is, a complete puncture device is obtained.
  • the core of the puncture device 900 of the present invention is that the cannula assembly 102 of the sheath tube 100 contains the pressure-resistant sealing ring 1 of the present invention. Since the reset mechanism 20 is provided in the pressure-resistant sealing ring 1 of the present invention, the incision 11 can be restored even in the state of high intra-abdominal static pressure through the mutual cooperation and support of the positioning ribs 20-1. It is not easy to dislocate, so the trocar 900 of the present invention has excellent and stable sealing performance under the condition of high intra-abdominal static pressure.

Abstract

本发明之耐压密封圈含切口、支撑面、端密封面和复位机构。支撑面的中心部分设有切口，支撑面的边缘连接端密封面。复位机构设在支撑斜面的外侧，复位机构通常由具有一定高度的相互配合的定位棱实现对支撑斜面的复位支撑。相互配合的定位棱具有能相互配合的配合面。当撤除器械时，切口闭合，定位棱回复初始位置，配合面互相贴近，形成面接触，防止沿高度方向移位，在腹内静压的作用下，配合面相互贴合支撑，在定位棱的加强支撑作用下，切口不容易发生错位，从而可以更好地保证耐压密封圈的高静压状态下的密封性。含本发明之耐压密封圈的本发明之穿刺器也因此具有良好的高静压状态下的稳定的密封性能。

Description

用于穿刺器的耐压密封圈及穿刺器鞘管和穿刺器 技术领域
本发明涉及一种腹腔镜外科手术器械，特别是涉及在腹腔镜手术中使用的穿刺器的耐压密封圈，及含有该耐压密封圈的穿刺器鞘管和穿刺器。
背景技术
腹腔镜手术得到了越来越广泛的应用，为了避免医源性感染，腹腔镜手术中使用的一次性穿刺器(Trocar)的用量也越来越大。根据不同的手术要求，从穿刺器中通过的手术器械的种类越来越多，形状也越来越复杂。而在穿刺器的使用过程中，与手术器械接触最频繁的零部件就是密封圈。为保证手术的顺畅，在穿刺器的设计中经常采用硅胶材料来制造密封圈以减小器械的运动阻力。
但硅胶材料由于非常柔软，在降低运动阻力的同时，密封圈的切口的定位能力相对较弱，当腹腔内静态压力较大，如达到4KPa时，硅胶密封圈的切口处可能发生错位，尤其是当硅胶密封圈具有润滑液时，硅胶密封圈的切口处很容易发生错位，造成密封性能降低，甚至导致密封失效，严重者会导致手术过程中断，造成临床意外。
本专利申请就是对现有技术的穿刺器中的密封圈的进一步改进，以提高密封圈在较高的腹内静压状态下的密封稳定性，更好地防止密封圈在较高的腹内静压状态下的密封失效，保证手术的顺利进行。
发明内容
本发明之用于穿刺器的耐压密封圈的特点在于：在密封圈支持面的外侧设有含定位棱的复位机构，通过定位棱的配合面之间的相互支撑作用，使得密封圈即使在较高的腹内静压状态下，密封圈的切口也不容易发生错位，从而有效防止密封圈在较高的腹内静压状态下的密封失效。
本发明之用于穿刺器的耐压密封圈，其特征在于：所述耐压密封圈1含切口11、支撑面12、端密封面13和复位机构20；
A.所述能让手术器械通过的切口11设在所述支撑面12的中心部分；
B.所述复位机构20设在所述支撑面12上；
C.所述支撑面12的中心部分设有所述切口11，所述支撑面12的边缘连接所述端密封面13。
当器械进入时，所述复位机构20能够随之向外扩展，不阻碍器械的运动，当器械撤除后，所述复位机构20回复到支撑状态，能够对所述支撑面12提供支撑，使得所述切口11不易错位，即使在较高的腹内静压状态下也能保持良好的密封性能。
所述复位机构20设置在所述支撑面12的外侧。所述复位机构20优选地设置在所述支撑面12的外侧，这样可以保持所述耐压密封圈1的内侧的平滑，避免由于所述复位机构20阻碍器械的进出运动。
所述复位机构20含定位棱20-1。
每个所述复位机20含至少1对相互配合的定位棱20-1。
所述定位棱20-1的配合面20-11的高度不小于0.3mm。
所述复位机构20通常由具有一定高度的相互配合的所述定位棱20-1实现对所述支撑面12的复位支撑。相互配合的所述定位棱20-1各具有1个能相互配合的所述配合面20-11，所述配合面20-11具有一定的高度，通常高度在0.3mm以上具有较好的支撑作用。当撤除器械时，所述切口11闭合，所述定位棱20-1回复初始位置，所述配合面20-11互相贴近，当腹内静压较高，如达到4KPa时，在腹内静压的作用下，所述配合面20-11相互贴合支撑，形成面接触，不容易沿高度方向发生移位，在所述定位棱20-1的加强支撑作用下，所述切口11不容易发生错位，从而可以更好地保证所述耐压密封圈1的高静压状态下的密封性。
所述定位棱20-1和所述支撑面12整体制造而成。通常所述定位棱20-1直接整体制造在所述支撑面12的外侧，可以很好地随着所述支撑面12的运动而随之发生运动。
所述耐压密封圈1至少含1个切口11。所述耐压密封圈1至少含有1个所述切口11以供器械通过。为降低器械通过时的运动阻力，通常可以设置多个所述切口11，并将所述切口11布置成不同的方向，使得器械可以更方便地进出。
所述耐压密封圈1含2个所述切口11，2个所述切口11呈十字交叉。十字交叉方式的分布，当器械进入时，所述切口11同时向四面张开，不论哪种形状的器械都能很轻松地进出，运动阻力非常小。
所述耐压密封圈1的支撑面12沿2个呈十字交叉的所述切口11形成4对支撑斜面12-1；每对所述支撑斜面12-1相互连接，连接处形成连接棱线12-11，所述支撑斜面12-1沿所述连接棱线12-11向所述密封圈1的内侧凹陷；所述连接棱线12-11在内侧构成器械接触棱12-3，所述接触棱12-3向内凸起，降低器械和所述密封圈1的接触面积；所述支撑 斜面12-1的外侧沿所述连接棱线12-11的两侧对称分布有所述复位机构20的定位棱20-1，所述定位棱20-1之间形成的定位槽20-2的位置与所述连接棱线12-11重合，设置在所述支撑斜面12-1的外侧。
当器械进入时，所述支撑斜面12-1向外运动扩展，所述切口11同时向四面张开，设置在所述支撑斜面12-1外侧的所述定位棱20-1也随之向外运动，由于器械仅与所述连接棱线12-11在内侧构成的所述接触棱12-3的前端接触，接触面积很小，运动摩擦力很小，器械可以很顺畅地从所述切口11进入体内，保持低的运动阻力。当器械撤除后，所述支撑斜面12-1快速沿所述连接棱线12-11向内侧凹陷，使得所述切口11迅速回复到闭合状态，所述定位棱20-1也随之向内侧运动，所述回复到复位支撑的状态。在腹内静压的作用下，所述配合面20-11相互贴合，形成面接触方式，对所述切口11形成一个良好的支撑作用，即使压力较高，由于所述配合面20-11之间良好的支撑作用，所述切口11也不容易相互错位，从而有效地保证了所述切口11即使在较高的压力作用下也能保持闭合，从而具有良好的临床密封效果。
所述耐压密封圈1含3个所述切口11，3个所述切口11在顶点呈Y字交叉。Y字交叉方式的分布，当器械进入时，所述切口11同时向Y字的三个方向张开，也能保证非常低的运动阻力。
所述耐压密封圈1的支撑面12沿3个呈Y字交叉的所述切口11形成3对支撑斜面12-1；每对所述支撑斜面12-1相互连接，连接处形成连接棱线12-11，所述支撑斜面12-1沿所述连接棱线12-11向所述密封圈1的内侧凹陷；所述连接棱线12-11在内侧构成器械接触棱12-3，所述接触棱12-3向内凸起，降低器械和所述密封圈1的接触面积；所述支撑斜面12-1的外侧沿所述连接棱线12-11的两侧对称分布有所述复位机构20的定位棱20-1，所述定位棱20-1之间形成的定位槽20-2的位置与所述连接棱线12-11重合，设置在所述支撑斜面12-1的外侧。
当器械进入时，所述支撑斜面12-1向外运动扩展，所述切口11沿Y字形结构的三个方向展开，设置在所述支撑斜面12-1外侧的所述定位棱20-1也随之向外运动，由于器械仅与所述连接棱线12-11在内侧构成的所述接触棱12-3的前端接触，接触面积很小，运动摩擦力很小，器械可以很顺畅地从所述切口11进入体内，保持低的运动阻力。当器械撤除后，所述支撑斜面12-1快速沿所述连接棱线12-11向内侧凹陷，使得所述切口11迅速回复到闭合状态，所述定位棱20-1也随之向内侧运动，所述回复到复位支撑的状态。在腹内静压的作用下，所述配合面20-11相互贴合，形成面接触方式，对所述切口11形成一个良好的支撑作用。即使压力较高，由于所述配合面20-11之间良好的支撑作用，所述切口11也不容易相互错位，从而有效地保证了所述切口11即使在较高的压力作用下也能保持闭合， 从而具有良好的临床密封效果。
而且Y字型结构是相互配合的三向结构，比十字交叉结构具有更好的空间固定效果，对于大直径的密封圈，具有更好的稳定性。
所述耐压密封圈1还含密封凸边14；所述密封凸边14设在所述端密封面13的内侧，向上凸起。所述密封凸边14可以进一步增强所述耐压密封圈1的端部密封效果。
所述密封凸边14为环形结构，所述密封凸边14凸起的边缘上设有导向角14-1。
所述耐压密封圈1还含翻边15、翻边加强筋16、安装槽17；所述翻边15设在所述端密封面13的外侧，向下凸起；所述翻边加强筋16设在翻边15的下方，与所述翻边15相连接；所述密封凸边14、所述端密封面13、所述翻边15及所述翻边加强筋16之间形成安装槽孔17；所述支撑面12的中心部分连接所述切口11，所述支撑面12的边缘依次连接所述密封凸边14、所述端密封面13、所述翻边15、及所述翻边加强筋16。由于翻边加强筋16的存在，增加了所述耐压密封圈1安装时的环抱力，从而大幅度增大所述耐压密封圈1脱落时的抵抗力，可以更好地避免所述耐压密封圈1的滑脱，临床使用更加安全。
所述翻边加强筋16上设有安装缺口16-2。所述安装缺口16-2能让安装过程更加方便。
所述端密封面13、所述翻边15及所述翻边加强筋16均为圆环形结构。
所述耐压密封圈1采用医用弹性材料整体制造而成。所述耐压密封圈1尤其可以采用医用硅胶整体制造而成，保证低的运动阻力的同时，通过所述复位机构20提供一个良好的静压稳定性，而且医用材料也具有良好的临床使用生物安全性。
本发明之穿刺器的鞘管含所述耐压密封圈1。
所述鞘管100由端密封组件101和套管组件102组成。
所述套管组件102含所述耐压密封圈1、套管盖2、套管3、套管外套4及开关5。
进一步，所述套管盖2与所述套管外套4之间通过凹凸卡配合将所述耐压密封圈1镶嵌固定在所述套管3的端部，其中，所述套管盖2上的凸阶2-1镶嵌在所述套管外套4的连接凹槽4-1内；所述耐压密封圈1的安装槽17与所述套管3的密封凸阶3-1形成吻合密封；所述耐压密封圈1的翻边15，以及所述翻边15与所述翻边加强筋16之间的连接区域的强度薄弱区16-1被所述套管盖2的外壁2-2压紧；所述耐压密封圈1的翻边加强筋16安装在所述套管盖2与所述套管外套4的间隙中。
本发明之穿刺器含所述穿刺器的鞘管100。进一步，所述穿刺器900由鞘管100和穿刺杆200组成。
本发明之耐压密封圈含切口11、支撑面12、端密封面13和复位机构20。所述支撑面12的中心部分设有所述切口11，所述支撑面12的边缘连接所述端密封面13。所述复位机构20设在所述支撑面12的外侧，所述复位机构20通常由具有一定高度的相互配合的所述 定位棱20-1实现对所述支撑面12的复位支撑。相互配合的所述定位棱20-1各具有1个能相互配合的所述配合面20-11，所述配合面20-11具有一定的高度，通常高度在0.3mm以上具有较好的支撑作用。当撤除器械时，所述切口11闭合，所述定位棱20-1回复初始位置，所述配合面20-11互相贴近，当腹内静压较高，如达到4KPa时，在腹内静压的作用下，所述配合面20-11相互贴合支撑，形成面接触，不容易沿高度方向发生移位，在所述定位棱20-1的加强支撑作用下，所述切口11不容易发生错位，从而可以更好地保证所述耐压密封圈1的高静压状态下的密封性。含本发明之耐压密封圈的本发明之穿刺器也因此具有良好的高静压状态下的稳定的密封性能。
附图说明
图1是十字交叉型切口的本发明之耐压密封圈的立体结构示意图。
图1-1是图1的A处放大图。
图1-2是图1的主视图。
图1-3是图1-2的B-B剖视图。
图1-4是本发明之耐压密封圈切口张开时的结构示意图。
图1-5是含十字交叉型切口耐压密封圈的本发明之鞘管的结构示意图。
图1-6是含十字交叉型切口耐压密封圈的本发明之穿刺器的结构示意图。
图2是Y字型切口的本发明之耐压密封圈的立体结构示意图。
图2-1是图2的C处放大图。
图2-2是图2的俯视图。
图2-3是图2-2的D-D剖视图。
图2-4是含Y字型切口耐压密封圈的本发明之鞘管的结构示意图。
图2-5是含Y字型切口耐压密封圈的本发明之穿刺器的结构示意图。
上述图中：
100为本发明之穿刺器鞘管，101为本发明之穿刺器鞘管的端密封组件，102为本发明之穿刺器鞘管的套管组件，200为本发明之穿刺器的穿刺杆，900为本发明之穿刺器。
1为本发明之用于穿刺器的耐压密封圈，2为套管盖，3为套管，4为套管外套，5为开关。
11为切口，12为支撑面，13为端密封面，14为密封凸起，15为翻边，16为翻边加强筋，17为安装槽，20为复位机构。
12-1为支撑斜面，12-11为连接棱线，12-3为接触棱。
14-1为密封凸起上的导向角。
16-2为翻边加强筋的缺口。
20-1为定位棱，20-11为配合面。
2-1为套管盖上的凸阶，2-2为套管盖的外壁。
3-1为套管的密封凸阶。
4-1为套管外套的连接凹槽
具体实施方式
实施例1：十字交叉型切口的本发明之耐压密封圈
参考图1至图1-4，本实施例之耐压密封圈1含切口11、支撑面12、端密封面13和复位机构20。
所述能让手术器械通过的切口11设在所述支撑面12的中心部分。
所述支撑面12的中心部分设有所述切口11，所述支撑面12的边缘连接所述端密封面13。
本实施例中，所述复位机构20设置在所述支撑面12的外侧。所述复位机构20优选地设置在所述支撑面12的外侧，这样可以保持所述耐压密封圈1的内侧的平滑，避免由于所述复位机构20阻碍器械的进出运动。
所述复位机构20含定位棱20-1。
本实施例中，每个所述复位机20含1对相互配合的定位棱20-1。
所述定位棱20-1的配合面20-11的高度不小于0.3mm。
所述复位机构20通常由具有一定高度的相互配合的所述定位棱20-1实现对所述支撑面12的复位支撑。相互配合的所述定位棱20-1各具有1个能相互配合的所述配合面20-11，所述配合面20-11具有一定的高度，通常高度在0.3mm以上具有较好的支撑作用。
本实施例中，所述定位棱20-1和所述支撑面12由医用硅胶整体制造而成。通常所述定位棱20-1直接整体制造在所述支撑面12的外侧，可以很好地随着所述支撑面12的运动而随之发生运动。医用硅胶材料，在保证低的运动阻力的同时，通过所述复位机构20提供一个良好的静压稳定性，而且医用硅胶材料也具有非常良好的临床使用生物安全性。
参考图1，本实施例中，所述耐压密封圈1含2个所述切口11，2个所述切口11呈十字交叉。十字交叉方式的分布，当器械进入时，所述切口11同时向四面张开，不论哪种形状的器械都能很轻松地进出，运动阻力非常小。
参考图1和图1-1，所述耐压密封圈1的支撑面12沿2个呈十字交叉的所述切口11 形成4对支撑斜面12-1；每对所述支撑斜面12-1相互连接，连接处形成连接棱线12-11，所述支撑斜面12-1沿所述连接棱线12-11向所述密封圈1的内侧凹陷；所述连接棱线12-11在内侧构成器械接触棱12-3，所述接触棱12-3向内凸起，降低器械和所述密封圈1的接触面积；所述支撑斜面12-1的外侧沿所述连接棱线12-11的两侧对称分布有所述复位机构20的定位棱20-1，所述定位棱20-1之间形成的定位槽20-2的位置与所述连接棱线12-11重合，设置在所述支撑斜面12-1的外侧。
参考图1-4，当器械进入时，所述支撑斜面12-1向外运动扩展，所述切口11同时向四面张开，设置在所述支撑斜面12-1外侧的所述定位棱20-1也随之向外运动，由于器械仅与所述连接棱线12-11在内侧构成的所述接触棱12-3的前端接触，接触面积很小，运动摩擦力很小，器械可以很顺畅地从所述切口11进入体内，保持低的运动阻力。当器械撤除后，所述支撑斜面12-1快速沿所述连接棱线12-11向内侧凹陷，使得所述切口11迅速回复到闭合状态，所述定位棱20-1也随之向内侧运动，所述回复到复位支撑的状态。在腹内静压的作用下，所述配合面20-11相互贴合，形成面接触方式，不容易沿高度方向发生移位，对所述切口11形成一个良好的支撑作用，即使压力较高，由于所述配合面20-11之间良好的支撑作用，所述切口11也不容易相互错位，从而有效地保证了所述切口11即使在较高的压力作用下也能保持闭合，从而具有良好的临床密封效果。
参考图1-3，本实施例中，所述耐压密封圈1还含密封凸边14；所述密封凸边14设在所述端密封面13的内侧，向上凸起。所述密封凸边14可以进一步增强所述耐压密封圈1的端部密封效果。
所述密封凸边14为环形结构，所述密封凸边14凸起的边缘上设有导向角14-1。
所述耐压密封圈1还含翻边15、翻边加强筋16、安装槽17；所述翻边15设在所述端密封面13的外侧，向下凸起；所述翻边加强筋16设在翻边15的下方，与所述翻边15相连接；所述密封凸边14、所述端密封面13、所述翻边15及所述翻边加强筋16之间形成安装槽孔17；所述支撑面12的中心部分连接所述切口11，所述支撑面12的边缘依次连接所述密封凸边14、所述端密封面13、所述翻边15、及所述翻边加强筋16。由于翻边加强筋16的存在，增加了所述耐压密封圈1安装时的环抱力，从而大幅度增大所述耐压密封圈1脱落时的抵抗力，可以更好地避免所述耐压密封圈1的滑脱，临床使用更加安全。
所述端密封面13、所述翻边15及所述翻边加强筋16均为圆环形结构。所述翻边加强筋16上设有安装缺口16-2。所述安装缺口16-2能让安装过程更加方便。
本实施例之耐压密封圈通过相互配合的所述定位棱20-1，对所述支撑边12形成良好的支撑固定作用，有效地保证了所述切口11即使在较高的压力作用下也能保持闭合，从而具有良好的临床密封效果。
实施例2：Y字型切口的本发明之耐压密封圈
参考图2至图2-3，本实施例与实施例1的区别在于，本实施例中，所述切口11是Y字型切口。
参考图2和图2-1，本实施例中，所述耐压密封圈1含3个所述切口11，3个所述切口11在顶点呈Y字交叉。Y字交叉方式的分布，当器械进入时，所述切口11同时向Y字的三个方向张开，也能保证非常低的运动阻力。
参考图2和图2-2，所述耐压密封圈1的支撑面12沿3个呈Y字交叉的所述切口11形成3对支撑斜面12-1；每对所述支撑斜面12-1相互连接，连接处形成连接棱线12-11，所述支撑斜面12-1沿所述连接棱线12-11向所述密封圈1的内侧凹陷；所述连接棱线12-11在内侧构成器械接触棱12-3，所述接触棱12-3向内凸起，降低器械和所述密封圈1的接触面积；所述支撑斜面12-1的外侧沿所述连接棱线12-11的两侧对称分布有所述复位机构20的定位棱20-1，所述定位棱20-1之间形成的定位槽20-2的位置与所述连接棱线12-11重合，设置在所述支撑斜面12-1的外侧。
当器械进入时，所述支撑斜面12-1向外运动扩展，所述切口11沿Y字形结构的三个方向展开，设置在所述支撑斜面12-1外侧的所述定位棱20-1也随之向外运动，由于器械仅与所述连接棱线12-11在内侧构成的所述接触棱12-3的前端接触，接触面积很小，运动摩擦力很小，器械可以很顺畅地从所述切口11进入体内，保持低的运动阻力。当器械撤除后，所述支撑斜面12-1快速沿所述连接棱线12-11向内侧凹陷，使得所述切口11迅速回复到闭合状态，所述定位棱20-1也随之向内侧运动，所述回复到复位支撑的状态。在腹内静压的作用下，所述配合面20-11相互贴合，形成面接触方式，不容易沿高度方向发生移位，对所述切口11形成一个良好的支撑作用。即使压力较高，由于所述配合面20-11之间良好的支撑作用，所述切口11也不容易相互错位，从而有效地保证了所述切口11即使在较高的压力作用下也能保持闭合，从而具有良好的临床密封效果。
而且Y字型结构是相互配合的三向结构，比十字交叉结构具有更好的空间固定效果，因此，相比于实施例1，本实施例之耐压密封圈对于大直径的状态下，具有更好的稳定性。
实施例3：本发明之穿刺器的鞘管
参考图1-5，所述穿刺器的鞘管100含实施例1所述耐压密封圈1。
参考图2-4，所述穿刺器的鞘管100含实施例2所述耐压密封圈1。
所述鞘管100由端密封组件101和套管组件102组成。
所述套管组件102含所述耐压密封圈1、套管盖2、套管3、套管外套4及开关5。
进一步，所述套管盖2与所述套管外套4之间通过凹凸卡配合将所述耐压密封圈1镶 嵌固定在所述套管3的端部，其中，所述套管盖2上的凸阶2-1镶嵌在所述套管外套4的连接凹槽4-1内；所述耐压密封圈1的安装槽17与所述套管3的密封凸阶3-1形成吻合密封；所述耐压密封圈1的翻边15被所述套管盖2的外壁2-2压紧；所述耐压密封圈1的翻边加强筋16安装在所述套管盖2与所述套管外套4的间隙中。
由于所述耐压密封圈1的安装槽17与套管3的密封凸阶3-1形成吻合密封；所述耐压密封圈1的翻边15被所述套管盖2的外壁2-2压紧；所述耐压密封圈1的翻边加强筋16安装在所述套管盖2与所述套管外套4的间隙中；特别是所述翻边加强筋16的存在，增加了耐压密封圈1安装时的环抱力，从而大幅度增大所述耐压密封圈1脱落时的抵抗力。
本实施例之穿刺器的鞘管由于含所述耐压密封圈1，即使在较高的压力作用下也能保持良好稳定的密封效果。
实施例4：本发明之穿刺器
参考图1-6，本发明之穿刺器900，所述穿刺器900含实施例1所述耐压密封圈1。
参考图2-5，本发明之穿刺器900，所述穿刺器900含实施例2所述耐压密封圈1。
所述穿刺器900由鞘管100和穿刺杆200组成。在实施例3和实施例4的基础上，增加了穿刺杆200，即得到了一个完整的穿刺器。无论采用何种结构的穿刺杆200，本发明之穿刺器900的核心是所述鞘管100的套管组件102中含有本发明之耐压密封圈1。由于在本发明之耐压密封圈1中设有所述复位机构20，通过所述定位棱20-1的相互配合支撑作用，使得所述切口11即使在较高的腹内静压状态下也不容易错位，所以本发明之穿刺器900具有极好的高腹内静压状态下的良好稳定的密封性能。
应该注意，本文中公开和说明的结构可以用其它效果相同的结构代替，同时本发明所介绍的实施例并非实现本发明的唯一结构。虽然本发明的优先实施例已在本文中予以介绍和说明，但本领域内的技术人员都清楚知道这些实施例不过是举例说明而已，本领域内的技术人员可以做出无数的变化、改进和代替，而不会脱离本发明，因此，应按照本发明所附的权利要求书的精神和范围来限定本发明的保护范围。

Claims (19)

  1. 用于穿刺器的耐压密封圈，其特征在于：所述耐压密封圈(1)含切口(11)、支撑面(12)、端密封面(13)和复位机构(20)；
    A.所述能让手术器械通过的切口(11)设在所述支撑面(12)的中心部分；
    B.所述复位机构(20)设在所述支撑面(12)上；
    C.所述支撑面(12)的中心部分设有所述切口(11)，所述支撑面(12)的边缘连接所述端密封面(13)。
  2. 根据权利要求1所述耐压密封圈，其特征在于：所述复位机构(20)设置在所述支撑面(12)的外侧。
  3. 根据权利要求1所述耐压密封圈，其特征在于：所述复位机构(20)含定位棱(20-1)。
  4. 根据权利要求3所述耐压密封圈，其特征在于：每个所述复位机构(20)含至少1对相互配合的定位棱(20-1)。
  5. 根据权利要求4所述耐压密封圈，其特征在于：所述定位棱(20-1)的配合面(20-11)的高度不小于0.3mm。
  6. 根据权利要求3所述耐压密封圈，其特征在于：所述定位棱(20-1)和所述支撑面(12)整体制造而成。
  7. 根据权利要求1所述耐压密封圈，其特征在于：所述耐压密封圈(1)至少含1个切口(11)。
  8. 根据权利要求7所述耐压密封圈，其特征在于：所述耐压密封圈(1)含2个所述切口(11)，2个所述切口(11)呈十字交叉。
  9. 根据权利要求8所述耐压密封圈，其特征在于：所述耐压密封圈(1)的支撑面(12)沿2个呈十字交叉的所述切口(11)形成4对支撑斜面(12-1)；每对所述支撑斜面(12-1)相互连接，连接处形成连接棱线(12-11)，所述支撑斜面(12-1)沿所述连接棱线(12-11)向所述密封圈(1)的内侧凹陷；所述连接棱线(12-11)在内侧构成器械接触棱(12-3)，所述接触棱(12-3)向内凸起，降低器械和所述密封圈(1)的接触面积；所述支撑斜面(12-1)的外侧沿所述连接棱线(12-11)的两侧对称分布有所述复位机构(20)的定位棱(20-1)，所述定位棱(20-1)之间形成的定位槽(20-2)的位置与所述连接棱线(12-11)重合，设置在所述支撑斜面(12-1)的外侧。
  10. 根据权利要求7所述耐压密封圈，其特征在于：所述耐压密封圈(1)含3个所述切口(11)，3个所述切口(11)在顶点呈Y字交叉。
  11. 根据权利要求10所述耐压密封圈，其特征在于：所述耐压密封圈(1)的支撑面(12)沿3个呈Y字交叉的所述切口(11)形成3对支撑斜面(12-1)；每对所述支撑斜 面(12-1)相互连接，连接处形成连接棱线(12-11)，所述支撑斜面(12-1)沿所述连接棱线(12-11)向所述密封圈(1)的内侧凹陷；所述连接棱线(12-11)在内侧构成器械接触棱(12-3)，所述接触棱(12-3)向内凸起，降低器械和所述密封圈(1)的接触面积；所述支撑斜面(12-1)的外侧沿所述连接棱线(12-11)的两侧对称分布有所述复位机构(20)的定位棱(20-1)，所述定位棱(20-1)之间形成的定位槽(20-2)的位置与所述连接棱线(12-11)重合，设置在所述支撑斜面(12-1)的外侧。
  12. 根据权利要求1所述耐压密封圈，其特征在于：所述耐压密封圈(1)还含密封凸边(14)；所述密封凸边(14)设在所述端密封面(13)的内侧，向上凸起；
  13. 根据权利要求1所述耐压密封圈，其特征在于：所述密封凸边(14)为环形结构，所述密封凸边(14)凸起的边缘上设有导向角(14-1)。
  14. 根据权利要求1所述耐压密封圈，其特征在于：所述耐压密封圈(1)还含翻边(15)、翻边加强筋(16)、安装槽(17)；所述翻边(15)设在所述端密封面(13)的外侧，向下凸起；所述翻边加强筋(16)设在翻边(15)的下方，与所述翻边(15)相连接；所述密封凸边(14)、所述端密封面(13)、所述翻边(15)及所述翻边加强筋(16)之间形成安装槽孔(17)；所述支撑面(12)的中心部分连接所述切口(11)，所述支撑面(12)的边缘依次连接所述密封凸边(14)、所述端密封面(13)、所述翻边(15)、及所述翻边加强筋(16)。
  15. 根据权利要求14所述耐压密封圈，其特征在于：所述翻边加强筋(16)上设有安装缺口(16-2)。
  16. 根据权利要求14所述耐压密封圈，其特征在于：所述端密封面(13)、所述翻边(15)及所述翻边加强筋(16)均为圆环形结构。
  17. 根据权利要求1所述耐压密封圈，其特征在于：所述耐压密封圈(1)采用医用弹性材料整体制造而成。
  18. 穿刺器的鞘管(100)，其特征在于：所述穿刺器的鞘管(100)含权利要求1所述耐压密封圈(1)。
  19. 穿刺器(900)，其特征在于：所述穿刺器(900)含权利要求13所述穿刺器的鞘管(100)。
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