CN114129231A - Pressure-resistant sealing ring for puncture outfit, puncture outfit sheath tube and puncture outfit - Google Patents
Pressure-resistant sealing ring for puncture outfit, puncture outfit sheath tube and puncture outfit Download PDFInfo
- Publication number
- CN114129231A CN114129231A CN202010913358.9A CN202010913358A CN114129231A CN 114129231 A CN114129231 A CN 114129231A CN 202010913358 A CN202010913358 A CN 202010913358A CN 114129231 A CN114129231 A CN 114129231A
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- pressure
- resistant
- sealing
- sealing ring
- supporting
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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
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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
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- 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
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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
- A61B2017/3454—Details of tips
Abstract
The pressure-resistant sealing ring of the present invention comprises a notch, a supporting surface, an end sealing surface and a reset mechanism. The center portion of the support surface is provided with a notch, and the edge of the support surface is connected with the end sealing surface. The reset mechanism is arranged on the outer side of the supporting inclined plane, and the reset mechanism usually realizes reset support on the supporting inclined plane through mutually matched positioning edges with certain height. The mutually matched positioning edges are provided with matching surfaces which can be mutually matched. When removing the apparatus, the incision is closed, and the initial position is replied to the location arris, and the fitting surface is pressed close to each other, forms the face contact, prevents to shift along the direction of height, and under the effect of intra-abdominal static pressure, the fitting surface supports of laminating each other, and under the enhancement supporting role at the location arris, the incision is difficult to take place the dislocation to can guarantee the leakproofness under the high static pressure state of withstand voltage sealing washer better. The puncture instrument of the present invention comprising the pressure-resistant seal ring of the present invention also has good sealing performance stably under a high static pressure state.
Description
Technical Field
The present invention relates to a laparoscopic surgical instrument, and more particularly, to a pressure-proof seal ring of a puncture instrument used in laparoscopic surgery, and a puncture instrument sheath and a puncture instrument including the pressure-proof seal ring.
Background
Laparoscopic surgery is increasingly used, and disposable puncture devices (trocars) are used in laparoscopic surgery in an increasing amount to avoid iatrogenic infections. According to different operation requirements, the types of the operation instruments passing through the puncture outfit are more and more, and the shapes of the operation instruments are more and more complex. And in the use process of the puncture outfit, the most frequent part contacted with the surgical instrument is the sealing ring. To ensure the smooth operation, silicone material is often used to manufacture the sealing ring in the design of the puncture outfit to reduce the motion resistance of the instrument.
However, since the silicone material is very soft, the movement resistance is reduced, and the positioning capability of the cut of the sealing ring is relatively weak, when the static pressure in the abdominal cavity is large, such as reaching 4KPa, the cut of the silicone sealing ring may be dislocated, especially when the silicone sealing ring has lubricating liquid, the cut of the silicone sealing ring is easily dislocated, which causes the sealing performance to be reduced, even causes the sealing failure, and a serious person may cause the interruption of the operation process, which causes clinical accidents.
This patent application is exactly the further improvement to the sealing washer in the puncture ware of prior art to improve the sealing stability of sealing washer under higher intra-abdominal static pressure state, prevent the sealing failure of sealing washer under higher intra-abdominal static pressure state better, guarantee going on smoothly of operation.
Disclosure of Invention
The pressure-resistant sealing ring for the puncture outfit is characterized in that: the outer side of the sealing ring supporting surface is provided with the reset mechanism with the positioning edges, and the notches of the sealing ring are not easy to be dislocated even under the state of higher intra-abdominal static pressure through the mutual supporting action between the matching surfaces of the positioning edges, so that the sealing failure of the sealing ring under the state of higher intra-abdominal static pressure is effectively prevented.
The invention relates to a pressure-resistant sealing ring for a puncture outfit, which is characterized in that: the pressure-proof sealing ring 1 comprises a notch 11, a supporting surface 12, an end sealing surface 13 and a resetting mechanism 20;
A. the incision 11 allowing the surgical instrument to pass through is arranged in the central part of the supporting surface 12;
B. the reset mechanism 20 is arranged on the supporting surface 12;
C. the central part of the support surface 12 is provided with the cut-out 11 and the edge of the support surface 12 joins the end sealing surface 13.
When the instrument enters, the resetting mechanism 20 can expand outwards along with the instrument, the instrument is not hindered from moving, and after the instrument is removed, the resetting mechanism 20 returns to a supporting state and can provide support for the supporting surface 12, so that the notch 11 is not easy to be dislocated, and good sealing performance can be maintained even in a high intra-abdominal static pressure state.
The return mechanism 20 is arranged outside the support surface 12. The restoring means 20 are preferably arranged outside the support surface 12, so that the inside of the pressure-tight seal 1 can be kept smooth, avoiding any hindrance of the in-and-out movement of the device by the restoring means 20.
The reset mechanism 20 comprises a positioning edge 20-1.
Each of the reset mechanisms 20 includes at least 1 pair of positioning ribs 20-1 which are engaged with each other.
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 is usually reset and supported by the mutually matched positioning ribs 20-1 with a certain height on the supporting surface 12. The mutually matched positioning edges 20-1 are respectively provided with 1 mutually matched matching surface 20-11, and the matching surfaces 20-11 have a certain height, and the height is usually more than 0.3mm, so that the better supporting effect is realized. When the device is removed, the cut 11 is closed, the positioning edge 20-1 returns to the initial position, the matching surfaces 20-11 are close to each other, when the intra-abdominal static pressure is high, such as 4KPa, under the action of the intra-abdominal static pressure, the matching surfaces 20-11 are mutually attached and supported to form surface contact, the displacement along the height direction is not easy to occur, and under the reinforcing supporting action of the positioning edge 20-1, the cut 11 is not easy to be dislocated, so that the sealing performance of the pressure-resistant sealing ring 1 in a high static pressure state can be better ensured.
The positioning rib 20-1 and the support surface 12 are integrally manufactured. The positioning rib 20-1 is generally integrally formed directly on the outside of the support surface 12 and preferably follows the movement of the support surface 12.
The pressure-resistant sealing ring 1 has at least 1 cut 11. The pressure-resistant sealing ring 1 comprises at least 1 incision 11 for the passage of instruments. To reduce the resistance to movement of the instrument through the incision 11, it is often desirable to provide a plurality of incisions 11 and to arrange the incisions 11 in different orientations so that the instrument can be more easily advanced and retracted.
The pressure-proof sealing ring 1 comprises 2 notches 11, and the 2 notches 11 are crossed. The cross-shaped distribution makes the incision 11 open towards four sides when the instrument is entered, and the instrument in any shape can easily enter and exit, and the motion resistance is very small.
The supporting surface 12 of the pressure-proof sealing ring 1 forms 4 pairs of supporting inclined surfaces 12-1 along 2 crossed notches 11; each pair of the supporting inclined planes 12-1 are connected with each other, a connecting edge line 12-11 is formed at the connection position, and the supporting inclined planes 12-1 are sunken towards the inner side of the sealing ring 1 along the connecting edge line 12-11; the connecting ridge line 12-11 forms an instrument contact edge 12-3 at the inner side, and the contact edge 12-3 protrudes inwards to reduce the contact area between an instrument and the sealing ring 1; the outer side of the supporting inclined plane 12-1 is symmetrically distributed with positioning edges 20-1 of the reset mechanism 20 along two sides of the connecting edge line 12-11, and the positions of positioning grooves 20-2 formed between the positioning edges 20-1 are superposed with the connecting edge line 12-11 and are arranged on the outer side of the supporting inclined plane 12-1.
When an instrument enters, the supporting inclined surface 12-1 moves outwards and expands, the incision 11 opens towards four sides simultaneously, the positioning edge 20-1 arranged at the outer side of the supporting inclined surface 12-1 moves outwards, and the instrument is only contacted with the front end of the contact edge 12-3 formed at the inner side of the connecting edge line 12-11, so that the contact area is small, the motion friction force is small, the instrument can smoothly enter the body from the incision 11, and the motion resistance is kept low. When the instrument is removed, the supporting inclined surface 12-1 is quickly recessed inwards along the connecting ridge line 12-11, so that the incision 11 is quickly restored to a closed state, and the positioning ridge 20-1 moves inwards along with the incision, so that the state of the reset support is restored. Under the action of intra-abdominal static pressure, the matching surfaces 20-11 are mutually attached to form a surface contact mode, a good supporting effect is formed on the notch 11, and even if the pressure is high, due to the good supporting effect between the matching surfaces 20-11, the notches 11 are not easy to be mutually dislocated, so that the notch 11 can be effectively kept closed even under the action of high pressure, and a good clinical sealing effect is achieved.
The pressure-resistant seal ring 1 comprises 3 notches 11, and the 3 notches 11 are crossed in a Y shape at the vertex. The cross-wise distribution of the Y-shape, when the instrument is introduced, the incision 11 opens in the three directions of the Y-shape simultaneously, also ensuring a 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 3Y-shaped crossed notches 11; each pair of the supporting inclined planes 12-1 are connected with each other, a connecting edge line 12-11 is formed at the connection position, and the supporting inclined planes 12-1 are sunken towards the inner side of the sealing ring 1 along the connecting edge line 12-11; the connecting ridge line 12-11 forms an instrument contact edge 12-3 at the inner side, and the contact edge 12-3 protrudes inwards to reduce the contact area between an instrument and the sealing ring 1; the outer side of the supporting inclined plane 12-1 is symmetrically distributed with positioning edges 20-1 of the reset mechanism 20 along two sides of the connecting edge line 12-11, and the positions of positioning grooves 20-2 formed between the positioning edges 20-1 are superposed with the connecting edge line 12-11 and are arranged on the outer side of the supporting inclined plane 12-1.
When an instrument enters, the supporting inclined surface 12-1 moves outwards and expands, the incision 11 is unfolded along three directions of the Y-shaped structure, the positioning edge 20-1 arranged at the outer side of the supporting inclined surface 12-1 moves outwards, and the instrument is only contacted with the front end of the contact edge 12-3 formed at the inner side of the connecting edge line 12-11, so that the contact area is small, the motion friction force is small, the instrument can smoothly enter the body from the incision 11, and the low motion resistance is kept. When the instrument is removed, the supporting inclined surface 12-1 is quickly recessed inwards along the connecting ridge line 12-11, so that the incision 11 is quickly restored to a closed state, and the positioning ridge 20-1 moves inwards along with the incision, so that the state of the reset support is restored. Under the action of intra-abdominal static pressure, the matching surfaces 20-11 are mutually attached to form a surface contact mode, and a good supporting effect is formed on the notch 11. Even if the pressure is high, the notches 11 are not easy to be mutually dislocated due to the good supporting function between the matching surfaces 20-11, so that the notches 11 can be effectively ensured to be kept closed even under the action of high pressure, and a good clinical sealing effect is achieved.
And Y style of calligraphy structure is three-dimensional structure of mutually supporting, has better space fixed effect than the cross structure, to the sealing washer of major diameter, has better stability.
The pressure-proof sealing ring 1 also comprises a sealing flange 14; the sealing bead 14 is arranged on the inside of the end sealing surface 13, projecting upwards. The sealing bead 14 can further enhance the sealing effect of the end of the pressure-tight sealing ring 1.
The sealing flange 14 is of an annular structure, and a guide angle 14-1 is arranged on the raised edge of the sealing flange 14.
The pressure-resistant sealing ring 1 also comprises a flanging 15, a flanging reinforcing rib 16 and a mounting groove 17; the flange 15 is arranged on the outer side of the end sealing surface 13 and protrudes downwards; the flanging reinforcing rib 16 is arranged below the flanging 15 and connected with the flanging 15; mounting slot holes 17 are formed among the sealing convex edge 14, the end sealing surface 13, the flanging 15 and the flanging reinforcing ribs 16; the central part of the supporting surface 12 is connected with the notch 11, and the edge of the supporting surface 12 is sequentially connected with the sealing flange 14, the end sealing surface 13, the flange 15 and the flange reinforcing rib 16. Due to the existence of the flanging reinforcing ribs 16, the encircling force of the pressure-resistant sealing ring 1 during installation is increased, so that the resistance of the pressure-resistant sealing ring 1 during falling is greatly increased, the pressure-resistant sealing ring 1 can be better prevented from slipping, and the clinical use is safer.
The flanging reinforcing ribs 16 are provided with mounting notches 16-2. The installation gap 16-2 can facilitate the installation process.
The end sealing surface 13, the flange 15 and the flange reinforcing rib 16 are all of a circular structure.
The pressure-resistant sealing ring 1 is integrally made of medical elastic materials. The pressure-proof sealing ring 1 can be made of medical silica gel integrally, so that low movement resistance is guaranteed, meanwhile, good static pressure stability is provided through the resetting mechanism 20, and medical materials also have good clinical use biological safety.
The sheath of the puncture outfit of the invention contains the pressure-resistant sealing ring 1.
The sheath 100 is comprised of an end seal assembly 101 and a sleeve assembly 102.
The sleeve assembly 102 comprises the pressure-proof sealing ring 1, a sleeve cover 2, a sleeve 3, a sleeve jacket 4 and a switch 5.
Further, the pressure-resistant sealing ring 1 is embedded and fixed at the end part of the sleeve 3 between the sleeve cover 2 and the sleeve jacket 4 through the matching of a concave-convex clamp, wherein a convex step 2-1 on the sleeve cover 2 is embedded in a connecting groove 4-1 of the sleeve jacket 4; the mounting groove 17 of the pressure-proof sealing ring 1 and the sealing convex step 3-1 of the sleeve 3 form a matched seal; the flanging 15 of the pressure-resistant sealing ring 1 and the strength weak area 16-1 of the connecting area between the flanging 15 and the flanging reinforcing rib 16 are tightly pressed by the outer wall 2-2 of the sleeve cover 2; and a flanging reinforcing rib 16 of the pressure-resistant sealing ring 1 is arranged in a gap between the sleeve cover 2 and the sleeve outer sleeve 4.
The puncture instrument of the present invention includes the sheath 100 of the puncture instrument. Further, the puncture outfit 900 is composed of a sheath tube 100 and a puncture rod 200.
The pressure-resistant seal ring of the present invention comprises a slit 11, a support surface 12, an end seal surface 13 and a return mechanism 20. The central part of the support surface 12 is provided with the cut-out 11 and the edge of the support surface 12 joins the end sealing surface 13. The resetting mechanism 20 is arranged outside the supporting surface 12, and the resetting mechanism 20 usually realizes resetting support of the supporting surface 12 by the mutually matched positioning edges 20-1 with a certain height. The mutually matched positioning edges 20-1 are respectively provided with 1 mutually matched matching surface 20-11, and the matching surfaces 20-11 have a certain height, and the height is usually more than 0.3mm, so that the better supporting effect is realized. When the device is removed, the cut 11 is closed, the positioning edge 20-1 returns to the initial position, the matching surfaces 20-11 are close to each other, when the intra-abdominal static pressure is high, such as 4KPa, under the action of the intra-abdominal static pressure, the matching surfaces 20-11 are mutually attached and supported to form surface contact, the displacement along the height direction is not easy to occur, and under the reinforcing supporting action of the positioning edge 20-1, the cut 11 is not easy to be dislocated, so that the sealing performance of the pressure-resistant sealing ring 1 in a high static pressure state can be better ensured. The puncture instrument of the present invention comprising the pressure-resistant seal ring of the present invention also has good sealing performance stably under a high static pressure state.
Drawings
Fig. 1 is a schematic perspective view of a cross-cut pressure-resistant seal ring of the present invention.
Fig. 1-1 is an enlarged view at a of fig. 1.
Fig. 1-2 are front views of fig. 1.
Fig. 1-3 are cross-sectional views B-B of fig. 1-2.
Fig. 1-4 are schematic views showing the structure of the pressure-resistant seal ring of the present invention when the slits are opened.
Fig. 1 to 5 are schematic structural views of the sheath tube of the present invention including the crisscross slit pressure-tight seal ring.
FIGS. 1-6 are schematic views showing the structure of the puncture instrument of the present invention including a crisscross slit pressure-tight seal.
Fig. 2 is a schematic perspective view of the pressure-resistant seal ring of the present invention having a Y-shaped cut.
Fig. 2-1 is an enlarged view at C of fig. 2.
Fig. 2-2 is a top view of fig. 2.
Fig. 2-3 are cross-sectional views D-D of fig. 2-2.
Fig. 2-4 are schematic structural views of the sheath tube of the present invention including the Y-shaped notched pressure-resistant seal ring.
FIGS. 2-5 are schematic views showing the structure of the puncture instrument of the present invention including a Y-shaped notched pressure-resistant seal.
In the above figures:
100 is the sheath of the puncture outfit of the invention, 101 is the end sealing component of the sheath of the puncture outfit of the invention, 102 is the sleeve component of the sheath of the puncture outfit of the invention, 200 is the puncture rod of the puncture outfit of the invention, and 900 is the puncture outfit of the invention.
1 is the pressure-resistant sealing ring for the puncture outfit of the invention, 2 is a sleeve cover, 3 is a sleeve, 4 is a sleeve jacket, and 5 is a switch.
11 is a notch, 12 is a supporting surface, 13 is an end sealing surface, 14 is a sealing bulge, 15 is a flanging, 16 is a flanging reinforcing rib, 17 is a mounting groove, and 20 is a reset mechanism.
12-1 is a supporting inclined plane, 12-11 is a connecting ridge line, and 12-3 is a contact ridge.
14-1 is the guide angle on the sealing projection.
16-2 is a notch of the flanging reinforcing rib.
20-1 is a positioning edge, and 20-11 is a matching surface.
2-1 is a convex step on the sleeve cover, and 2-2 is the outer wall of the sleeve cover.
And 3-1 is a sealing convex step of the sleeve.
4-1 is a connecting groove of the sleeve jacket
Detailed Description
Example 1: pressure-resistant sealing ring with crisscross cut
Referring to fig. 1 to 4, a pressure-resistant seal ring 1 of the present embodiment includes a slit 11, a support surface 12, an end seal surface 13, and a returning mechanism 20.
The incision 11 allowing the passage of the surgical instrument is provided in the central portion of the support surface 12.
The central part of the support surface 12 is provided with the cut-out 11 and the edge of the support surface 12 joins the end sealing surface 13.
In this embodiment, the return mechanism 20 is disposed outside the support surface 12. The restoring means 20 are preferably arranged outside the support surface 12, so that the inside of the pressure-tight seal 1 can be kept smooth, avoiding any hindrance of the in-and-out movement of the device by the restoring means 20.
The reset mechanism 20 comprises a positioning edge 20-1.
In this embodiment, each of the reset units 20 includes 1 pair of positioning ribs 20-1, which are engaged with each other.
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 is usually reset and supported by the mutually matched positioning ribs 20-1 with a certain height on the supporting surface 12. The mutually matched positioning edges 20-1 are respectively provided with 1 mutually matched matching surface 20-11, and the matching surfaces 20-11 have a certain height, and the height is usually more than 0.3mm, so that the better supporting effect is realized.
In this embodiment, the positioning rib 20-1 and the supporting surface 12 are integrally made of medical silica gel. The positioning rib 20-1 is generally integrally formed directly on the outside of the support surface 12 and preferably follows the movement of the support surface 12. The medical silica gel material provides a good static pressure stability through the reset mechanism 20 while ensuring low movement resistance, and has very good biological safety in clinical use.
Referring to fig. 1, in the present embodiment, the pressure-resistant seal ring 1 includes 2 cuts 11, and the 2 cuts 11 are criss-cross. The cross-shaped distribution makes the incision 11 open towards four sides when the instrument is entered, and the instrument in any shape can easily enter and exit, and the motion resistance is very small.
Referring to fig. 1 and 1-1, a supporting surface 12 of the pressure-resistant seal ring 1 is formed with 4 pairs of supporting slopes 12-1 along 2 of the slits 11 crossing in a cross; each pair of the supporting inclined planes 12-1 are connected with each other, a connecting edge line 12-11 is formed at the connection position, and the supporting inclined planes 12-1 are sunken towards the inner side of the sealing ring 1 along the connecting edge line 12-11; the connecting ridge line 12-11 forms an instrument contact edge 12-3 at the inner side, and the contact edge 12-3 protrudes inwards to reduce the contact area between an instrument and the sealing ring 1; the outer side of the supporting inclined plane 12-1 is symmetrically distributed with positioning edges 20-1 of the reset mechanism 20 along two sides of the connecting edge line 12-11, and the positions of positioning grooves 20-2 formed between the positioning edges 20-1 are superposed with the connecting edge line 12-11 and are arranged on the outer side of the supporting inclined plane 12-1.
Referring to fig. 1 to 4, when an instrument is introduced, the support slope 12-1 moves outward and expands, the incision 11 is opened in four directions at the same time, and the positioning ridge 20-1 provided outside the support slope 12-1 moves outward, and since the instrument is in contact with only the front end of the contact ridge 12-3 formed inside the connection ridge 12-11, the contact area is small, the friction force of the motion is small, and the instrument can be smoothly introduced into the body from the incision 11, and the motion resistance is kept low. When the instrument is removed, the supporting inclined surface 12-1 is quickly recessed inwards along the connecting ridge line 12-11, so that the incision 11 is quickly restored to a closed state, and the positioning ridge 20-1 moves inwards along with the incision, so that the state of the reset support is restored. Under the action of intra-abdominal static pressure, the matching surfaces 20-11 are mutually attached to form a surface contact mode, so that the displacement is not easy to occur along the height direction, a good supporting effect is formed on the notch 11, and even if the pressure is high, the notches 11 are not easy to be mutually dislocated due to the good supporting effect among the matching surfaces 20-11, so that the notch 11 can be effectively ensured to be kept closed even under the action of high pressure, and a good clinical sealing effect is achieved.
Referring to fig. 1 to 3, in the present embodiment, the pressure-resistant seal ring 1 further includes a sealing bead 14; the sealing bead 14 is arranged on the inside of the end sealing surface 13, projecting upwards. The sealing bead 14 can further enhance the sealing effect of the end of the pressure-tight sealing ring 1.
The sealing flange 14 is of an annular structure, and a guide angle 14-1 is arranged on the raised edge of the sealing flange 14.
The pressure-resistant sealing ring 1 also comprises a flanging 15, a flanging reinforcing rib 16 and a mounting groove 17; the flange 15 is arranged on the outer side of the end sealing surface 13 and protrudes downwards; the flanging reinforcing rib 16 is arranged below the flanging 15 and connected with the flanging 15; mounting slot holes 17 are formed among the sealing convex edge 14, the end sealing surface 13, the flanging 15 and the flanging reinforcing ribs 16; the central part of the supporting surface 12 is connected with the notch 11, and the edge of the supporting surface 12 is sequentially connected with the sealing flange 14, the end sealing surface 13, the flange 15 and the flange reinforcing rib 16. Due to the existence of the flanging reinforcing ribs 16, the encircling force of the pressure-resistant sealing ring 1 during installation is increased, so that the resistance of the pressure-resistant sealing ring 1 during falling is greatly increased, the pressure-resistant sealing ring 1 can be better prevented from slipping, and the clinical use is safer.
The end sealing surface 13, the flange 15 and the flange reinforcing rib 16 are all of a circular structure. The flanging reinforcing ribs 16 are provided with mounting notches 16-2. The installation gap 16-2 can facilitate the installation process.
The pressure-proof sealing ring of the embodiment forms a good supporting and fixing effect on the supporting edge 12 through the mutually matched positioning edges 20-1, and effectively ensures that the cut 11 can be kept closed even under the action of high pressure, thereby having a good clinical sealing effect.
Example 2: pressure-resistant sealing ring with Y-shaped notch
Referring to fig. 2 to 3, the present embodiment is different from embodiment 1 in that the notch 11 is a Y-shaped notch in the present embodiment.
Referring to fig. 2 and 2-1, in the present embodiment, the pressure-resistant seal ring 1 includes 3 slits 11, and 3 slits 11 intersect at the apex in a Y-shape. The cross-wise distribution of the Y-shape, when the instrument is introduced, the incision 11 opens in the three directions of the Y-shape simultaneously, also ensuring a very low resistance to movement.
Referring to fig. 2 and 2-2, the supporting surface 12 of the pressure-resistant seal ring 1 is formed with 3 pairs of supporting inclined surfaces 12-1 along 3Y-intersecting slits 11; each pair of the supporting inclined planes 12-1 are connected with each other, a connecting edge line 12-11 is formed at the connection position, and the supporting inclined planes 12-1 are sunken towards the inner side of the sealing ring 1 along the connecting edge line 12-11; the connecting ridge line 12-11 forms an instrument contact edge 12-3 at the inner side, and the contact edge 12-3 protrudes inwards to reduce the contact area between an instrument and the sealing ring 1; the outer side of the supporting inclined plane 12-1 is symmetrically distributed with positioning edges 20-1 of the reset mechanism 20 along two sides of the connecting edge line 12-11, and the positions of positioning grooves 20-2 formed between the positioning edges 20-1 are superposed with the connecting edge line 12-11 and are arranged on the outer side of the supporting inclined plane 12-1.
When an instrument enters, the supporting inclined surface 12-1 moves outwards and expands, the incision 11 is unfolded along three directions of the Y-shaped structure, the positioning edge 20-1 arranged at the outer side of the supporting inclined surface 12-1 moves outwards, and the instrument is only contacted with the front end of the contact edge 12-3 formed at the inner side of the connecting edge line 12-11, so that the contact area is small, the motion friction force is small, the instrument can smoothly enter the body from the incision 11, and the low motion resistance is kept. When the instrument is removed, the supporting inclined surface 12-1 is quickly recessed inwards along the connecting ridge line 12-11, so that the incision 11 is quickly restored to a closed state, and the positioning ridge 20-1 moves inwards along with the incision, so that the state of the reset support is restored. Under the action of intra-abdominal static pressure, the matching surfaces 20-11 are mutually attached to form a surface contact mode, so that the displacement along the height direction is not easy to occur, and a good supporting effect is formed on the notch 11. Even if the pressure is high, the notches 11 are not easy to be mutually dislocated due to the good supporting function between the matching surfaces 20-11, so that the notches 11 can be effectively ensured to be kept closed even under the action of high pressure, and a good clinical sealing effect is achieved.
And Y style of calligraphy structure is three-dimensional structure of mutually supporting, has better space fixed effect than the criss-cross structure, consequently, compares in embodiment 1, the pressure seal circle of this embodiment has better stability to under the state of major diameter.
Example 3: the sheath of the puncture outfit of the invention
Referring to fig. 1 to 5, the sheath 100 of the puncture instrument includes the pressure-resistant seal ring 1 described in example 1.
Referring to fig. 2 to 4, the sheath 100 of the puncture instrument includes the pressure-resistant seal ring 1 described in example 2.
The sheath 100 is comprised of an end seal assembly 101 and a sleeve assembly 102.
The sleeve assembly 102 comprises the pressure-proof sealing ring 1, a sleeve cover 2, a sleeve 3, a sleeve jacket 4 and a switch 5.
Further, the pressure-resistant sealing ring 1 is embedded and fixed at the end part of the sleeve 3 between the sleeve cover 2 and the sleeve jacket 4 through the matching of a concave-convex clamp, wherein a convex step 2-1 on the sleeve cover 2 is embedded in a connecting groove 4-1 of the sleeve jacket 4; the mounting groove 17 of the pressure-proof sealing ring 1 and the sealing convex step 3-1 of the sleeve 3 form a matched seal; the flanging 15 of the pressure-proof sealing ring 1 is pressed tightly by the outer wall 2-2 of the sleeve cover 2; and a flanging reinforcing rib 16 of the pressure-resistant sealing ring 1 is arranged in a gap between the sleeve cover 2 and the sleeve outer sleeve 4.
The installation groove 17 of the pressure-proof sealing ring 1 and the sealing convex step 3-1 of the sleeve 3 form a matched seal; the flanging 15 of the pressure-proof sealing ring 1 is pressed tightly by the outer wall 2-2 of the sleeve cover 2; the flanging reinforcing rib 16 of the pressure-resistant sealing ring 1 is arranged in the gap between the sleeve cover 2 and the sleeve outer sleeve 4; particularly, the existence of the flanging reinforcing rib 16 increases the surrounding force of the pressure-resistant sealing ring 1 during installation, thereby greatly increasing the resistance of the pressure-resistant sealing ring 1 during falling off.
The sheath of the puncture instrument of the present embodiment includes the pressure-resistant seal ring 1, and thus can maintain a good and stable sealing effect even under a high pressure.
Example 4: the puncture outfit of the present invention
Referring to fig. 1 to 6, a puncture instrument 900 of the present invention, said puncture instrument 900 comprising a pressure-resistant seal ring 1 as described in example 1.
Referring to fig. 2 to 5, a puncture instrument 900 of the present invention, said puncture instrument 900 comprising the pressure-resistant seal ring 1 described in embodiment 2.
The puncture outfit 900 is composed of a sheath tube 100 and a puncture rod 200. On the basis of the embodiment 3 and the embodiment 4, the puncture rod 200 is added, and a complete puncture outfit is obtained. In any puncture rod 200 having any structure, the puncture instrument 900 of the present invention is characterized in that the sleeve assembly 102 of the sheath 100 includes the pressure-tight seal 1 of the present invention. Since the return means 20 is provided in the pressure-resistant seal ring 1 of the present invention, and the slits 11 are not easily displaced even in a high intra-abdominal static pressure state by the mutual supporting action of the positioning ribs 20-1, the puncture instrument 900 of the present invention has excellent and stable sealing performance in a high intra-abdominal static pressure state.
It should be noted that structures disclosed and illustrated herein may be replaced by other structures having the same effect, and the described embodiments of the invention are not the only structures for carrying out the invention. Although preferred embodiments of the present invention have been shown and described herein, it will be apparent to those skilled in the art that these embodiments are by way of example only and that numerous changes, modifications and substitutions may be made without departing from the invention in its broader aspects and, therefore, the invention is to be defined in the spirit and scope of the appended claims.
Claims (19)
1. A pressure seal circle for puncture ware, its characterized in that: the pressure-resistant sealing ring (1) comprises a notch (11), a supporting surface (12), an end sealing surface (13) and a resetting mechanism (20);
A. the incision (11) allowing the surgical instrument to pass through is arranged at the central part of the supporting surface (12);
B. the resetting mechanism (20) is arranged on the supporting surface (12);
C. the central part of the support surface (12) is provided with the cut-out (11), and the edge of the support surface (12) is connected with the end sealing surface (13).
2. A pressure-resistant seal ring as defined in claim 1, wherein: the resetting mechanism (20) is arranged on the outer side of the supporting surface (12).
3. A pressure-resistant seal ring as defined in claim 1, wherein: the reset mechanism (20) comprises a positioning edge (20-1).
4. A pressure-resistant seal ring according to claim 3, wherein: each resetting mechanism (20) comprises at least 1 pair of mutually matched positioning edges (20-1).
5. A pressure-resistant seal ring according to claim 4, wherein: the height of the matching surface (20-11) of the positioning edge (20-1) is not less than 0.3 mm.
6. A pressure-resistant seal ring according to claim 3, wherein: the positioning edge (20-1) and the support surface (12) are integrally manufactured.
7. A pressure-resistant seal ring as defined in claim 1, wherein: the pressure-resistant sealing ring (1) at least comprises 1 notch (11).
8. A pressure-resistant seal ring as claimed in claim 7, wherein: the pressure-resistant sealing ring (1) comprises 2 notches (11), and the 2 notches (11) are crossed.
9. A pressure-resistant seal ring as defined in claim 8, wherein: the supporting surface (12) of the pressure-resistant sealing ring (1) forms 4 pairs of supporting inclined surfaces (12-1) along 2 crossed notches (11); each pair of the supporting inclined planes (12-1) are connected with each other, a connecting ridge (12-11) is formed at the joint, and the supporting inclined planes (12-1) are sunken towards the inner side of the sealing ring (1) along the connecting ridge (12-11); the connecting ridge line (12-11) forms an instrument contact ridge (12-3) on the inner side, and the contact ridge (12-3) protrudes inwards to reduce the contact area between an instrument and the sealing ring (1); the outer side of the supporting inclined plane (12-1) is symmetrically provided with positioning edges (20-1) of the reset mechanism (20) along two sides of the connecting edge line (12-11), and the positions of positioning grooves (20-2) formed between the positioning edges (20-1) are superposed with the connecting edge line (12-11) and are arranged on the outer side of the supporting inclined plane (12-1).
10. A pressure-resistant seal ring as claimed in claim 7, wherein: the pressure-resistant sealing ring (1) comprises 3 notches (11), and the 3 notches (11) are crossed in a Y shape at the top point.
11. A pressure tight seal as defined in claim 10, wherein: the supporting surface (12) of the pressure-resistant sealing ring (1) forms 3 pairs of supporting inclined surfaces (12-1) along the 3Y-shaped crossed notches (11); each pair of the supporting inclined planes (12-1) are connected with each other, a connecting ridge (12-11) is formed at the joint, and the supporting inclined planes (12-1) are sunken towards the inner side of the sealing ring (1) along the connecting ridge (12-11); the connecting ridge line (12-11) forms an instrument contact ridge (12-3) on the inner side, and the contact ridge (12-3) protrudes inwards to reduce the contact area between an instrument and the sealing ring (1); the outer side of the supporting inclined plane (12-1) is symmetrically provided with positioning edges (20-1) of the reset mechanism (20) along two sides of the connecting edge line (12-11), and the positions of positioning grooves (20-2) formed between the positioning edges (20-1) are superposed with the connecting edge line (12-11) and are arranged on the outer side of the supporting inclined plane (12-1).
12. A pressure-resistant seal ring as defined in claim 1, wherein: the pressure-resistant sealing ring (1) also comprises a sealing flange (14); the sealing flange (14) is arranged on the inner side of the end sealing surface (13) and protrudes upwards;
13. a pressure-resistant seal ring as defined in claim 1, wherein: the sealing flange (14) is of an annular structure, and a guide angle (14-1) is arranged on the raised edge of the sealing flange (14).
14. A pressure-resistant seal ring as defined in claim 1, wherein: the pressure-resistant sealing ring (1) also comprises 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 downwards; the flanging reinforcing rib (16) is arranged below the flanging (15) and is connected with the flanging (15); mounting slot holes (17) are formed among the sealing convex edge (14), the end sealing surface (13), the flanging (15) and the flanging reinforcing ribs (16); the center part of the supporting surface (12) is connected with the notch (11), and the edge of the supporting surface (12) is sequentially connected with the sealing flange (14), the end sealing surface (13), the flange (15) and the flange reinforcing rib (16).
15. A pressure tight seal as defined in claim 14, wherein: and the flanging reinforcing ribs (16) are provided with mounting notches (16-2).
16. A pressure tight seal as defined in claim 14, wherein: the end sealing surface (13), the flanging (15) and the flanging reinforcing rib (16) are all in circular structures.
17. A pressure-resistant seal ring as defined in claim 1, wherein: the pressure-resistant sealing ring (1) is integrally made of medical elastic materials.
18. Sheath pipe (100) of puncture ware, its characterized in that: the sheath (100) of the puncture instrument comprises the pressure-resistant sealing ring (1) of claim 1.
19. Puncture ware (900), its characterized in that: the puncture instrument (900) comprises the sheath (100) of the puncture instrument of claim 13.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010913358.9A CN114129231A (en) | 2020-09-03 | 2020-09-03 | Pressure-resistant sealing ring for puncture outfit, puncture outfit sheath tube and puncture outfit |
| PCT/CN2021/115067 WO2022048503A1 (en) | 2020-09-03 | 2021-08-27 | Pressure-resistant sealing ring for trocar and trocar sheath and trocar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010913358.9A CN114129231A (en) | 2020-09-03 | 2020-09-03 | Pressure-resistant sealing ring for puncture outfit, puncture outfit sheath tube and puncture outfit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114129231A true CN114129231A (en) | 2022-03-04 |
Family
ID=80438138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010913358.9A Pending CN114129231A (en) | 2020-09-03 | 2020-09-03 | Pressure-resistant sealing ring for puncture outfit, puncture outfit sheath tube and puncture outfit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114129231A (en) |
| WO (1) | WO2022048503A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10214552A1 (en) * | 2002-04-02 | 2003-10-16 | Pajunk Ohg Besitzverwaltung | trocar |
| PL2262568T3 (en) * | 2008-03-14 | 2020-04-30 | Medical Components, Inc. | Tearaway introducer sheath with hemostasis valve |
| EP2892606B1 (en) * | 2012-09-07 | 2019-08-28 | Intuitive Surgical Operations, Inc. | Cannula seal |
| US10492825B2 (en) * | 2013-03-15 | 2019-12-03 | Intuitive Surgical Operations, Inc. | Sealing multiple surgical instruments |
| CN105105842A (en) * | 2015-08-31 | 2015-12-02 | 杭州康基医疗器械有限公司 | Puncture outfit sealing cap with edges |
| CN213489179U (en) * | 2020-09-03 | 2021-06-22 | 广州迪克医疗器械有限公司 | Pressure-resistant sealing ring for puncture outfit, puncture outfit sheath tube and puncture outfit |
-
2020
- 2020-09-03 CN CN202010913358.9A patent/CN114129231A/en active Pending
-
2021
- 2021-08-27 WO PCT/CN2021/115067 patent/WO2022048503A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022048503A1 (en) | 2022-03-10 |
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