CN202051787U - Annular sealing device used in puncture set and puncture set - Google Patents
Annular sealing device used in puncture set and puncture set Download PDFInfo
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- CN202051787U CN202051787U CN2010206727110U CN201020672711U CN202051787U CN 202051787 U CN202051787 U CN 202051787U CN 2010206727110 U CN2010206727110 U CN 2010206727110U CN 201020672711 U CN201020672711 U CN 201020672711U CN 202051787 U CN202051787 U CN 202051787U
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Abstract
The utility model relates to an annular sealing device used in a puncture set and the puncture set. A structure taking the shape of a rotating body with a big upper end, a small middle part and a big lower end is formed by combining guide blocks of a guide mechanism, a positioning groove is arranged in a wasp waist part of each guide block, and the bottom of a sealing ring is inlaid in the positioning groove to surround the guide block from outside to inside. When a surgical instrument is inserted into the positioning groove, the sealing ring extruded in the positioning groove overflows from a gap between the guide blocks to surround the surgical instrument, so as to form sealing. The annular sealing device reduces the contact area between the sealing ring and the surgical instrument to the maximum extent, not only has a guide function when the surgical instrument enters or exits out of the positioning groove, and is suitable for the insertion and exit of various surgical instruments; but also transforms a 'soft-hard' friction area between the sealing ring and the surgical instrument into a 'hard-hard' friction area between a plastic guide surface of the guide block and a metal outer sheath of the surgical instrument to the maximum extent, so as to greatly reduce the movement resistance of the surgical instrument in the sealing device and the puncture set. Meanwhile, the sealing device and the puncture set can use the surgical instruments with any diameter within 5 mm-12 mm, and has good sealing effect and low movement resistance.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, the perforator that particularly relates to the sealing device of the perforator that uses and used the sealing device in laparoscopic surgery.
Background technology
Laparoscopic surgery has obtained application more and more widely, for fear of nosocomial infection, the consumption of the disposable puncture device that uses in the laparoscopic surgery (Trocar) is also increasing, on the basis that guarantees serviceability, simplified structure, reduce cost, improve performance, this trend has become the improved direction of perforator.
The sealing of the perforator of prior art is made up of apex combustion seal and axial sealer.At Fig. 1-1 to Fig. 1-2, D
31Be the diameter of sealing ring operating theater instruments through hole, D
12Be that diameter is the circular arc position of 12mm, L-SH is illustrated in the length of " soft-firmly " friction zone that forms between the metal epitheca of silica gel sealing ring and operating theater instruments after the operating theater instruments of inserting 12mm.The general sealing ring of prior art, after inserting 12mm operating theater instruments (8), " soft-hard " the friction zone L-SH that forms between the metal epitheca of silica gel sealing ring and operating theater instruments is longer, and frictional resistance is bigger.
Common axial sealer, promptly check valve has multiple.One is a spring pressuring plate formula check valve, promotes baffle plate compressing silica gel sealing ring by spring leaf and forms sealing.This check valve is made up of spring leaf, baffle plate, silica gel sealing ring, and spring leaf adopts the rustless steel manufacturing, and baffle plate adopts the medical plastic manufacturing, and the axial sealer of this form often uses in reusable perforator.In recent years, in order to adapt to the needs of disposable puncture device development, developed the infundibulate silica gel sealing ring, this infundibulate silica gel sealing ring has a through otch of straight line in funnel shaped bottom, utilize the pressure that the carbon dioxide pneumoperitoneum forms in the contractility of silica gel itself and the use, reach the effect of sealing, this infundibulate silica gel sealing ring is extensive use of in disposable puncture device usually.
The apex combustion seal of prior art adopts the silica gel sealing ring of the funnel-shaped structure of band centre bore usually, and this sealing ring leaks when operating theater instruments is rocked especially easily, the dynamic seal (packing) weak effect.Particularly when in the operating theater instruments through hole of sealing ring that to diameter is 4mm, when inserting the operating theater instruments of 10mm or 12mm, operating theater instruments resistance when moving back and forth is big, and this has brought inconvenience for doctor's operation technique.
The head of operating theater instruments has various shape, particularly be similar to this class of titanium clamp pincers and when intraperitoneal is sent, need open the operating theater instruments of binding clip, its binding clip is open V font, often be not easy sealing ring by prior art, or the sealing ring of prior art punctured, cause gas to leak.The another one shortcoming of the apex combustion seal of prior art is this class operating theater instruments of or raised step fluted to head, blocks operating theater instruments when withdrawing from easily, and it is not smooth to move.
Thereby needs improve the apex combustion seal of the perforator of prior art, to reach the operating theater instruments that on diameter is the perforator of 10mm, not only can use 10mm, and can use the operating theater instruments of any diameter between 5mm～10mm, on being the perforator of 12mm, not only can use diameter equally the operating theater instruments of 12mm, and can use the operating theater instruments of any diameter between 5mm～12mm, reach general purpose.Simultaneously, the apex combustion seal of the perforator after this improvement can adapt to various difform operating theater instruments, makes things convenient for entering and withdrawing from of apparatus, and motion is smooth, and resistance is low.Obviously, the apex combustion seal of prior art and perforator still can not satisfy this requirement, thereby need improve.
Summary of the invention
The purpose of this utility model has been to provide a kind of apex combustion seal of perforator use and the perforator that has used this sealing device, can use the operating theater instruments of any diameter between 5mm～12mm, realizes its versatility; Not only require good sealing effect, and when motion resistance low.
The core of the technical scheme of this utility model is:
The motion of the epitheca of operating theater instruments in apex combustion seal mainly contacts with the guide pad of guiding mechanism, is combined into the rotation body structure that the upper end is big, the centre is little, the lower end is big between the guide pad, and sealing ring is installed in the locating slot of guide pad.This design has reduced the contact area of operating theater instruments and sealing ring to greatest extent, has guide function when not only apparatus enters or withdraws from, be fit to different shape operating theater instruments insertion and withdraw from; And with " soft-hard " friction zone between silica gel sealing ring and the operating theater instruments, be converted into " hard-hard " friction zone between the metal epitheca of plastics guide pad and operating theater instruments to greatest extent, reduced the resistance of motion of operating theater instruments in sealing device and perforator significantly.
The all-purpose sealed device of the lower resistance of this utility model is achieved in that
The annular seal that is used for perforator is characterized in that described sealing device contains guiding mechanism (1), sealing ring (3), wherein:
Guiding mechanism (1) comprises locating slot (10) and at least 2 guide pads (11) that sealing ring is installed;
Be combined into the rotation body structure that the upper end is big, the centre is little, the lower end is big between the guide pad (11); Locating slot (10) is located at the wasp waist portion of guide pad (11);
Sealing ring (3) adopts the manufacturing of elasticity medical macromolecular materials, which is provided with operating theater instruments through hole (31);
Sealing ring (3) is installed in the locating slot (10).
Further, the bottom of the close operating theater instruments through hole (31) of described sealing ring (3) places between the top (101) and following (102) of locating slot (10), is fixed together by connecting retaining mechanism (4), forms hermetically-sealed construction.
The top (101) of described locating slot (10) and the angle α on the vertical base of locating slot are between 90 °～30 °, and optimum is between 87 °～45 °; The bottom (102) of locating slot (10) and the angle β on the vertical base of locating slot are between 90 °～30 °, and optimum is between 87 °～45 °.The bottom (102) of top of locating slot (101) and locating slot is by after being connected retaining mechanism (4) locking, because the existence of angle α and β, sealing ring (3) in the locating slot (10) is played the entad effect of extruding, strengthen the encircle power of sealing ring, form sealing function operating theater instruments (8).
The angle γ of the vertebral body that is formed by guide pad (11) on the described guiding mechanism (1) is between 180 °～20 °, and optimum is between 100 °～30 °.
Described guiding mechanism (1) contains 4 guide pads (11); Form a pair of leading to slide block (115) by the bigger guide pad of the area of 2 spigot surfaces (11), the less guide pad (11) of the area of remaining 2 spigot surface forms a pair of secondary guide runner (116), and leading have different colors to slide block (115) with secondary guide runner (116).
The submarginal part in upper end of described sealing ring (3) contains the low-intensity relief area (35) of easy generation strain.
Further, the low-intensity relief area (35) of described sealing ring adopts ripple struction.
Described sealing ring (3) is that cross section is the sealing ring of trapezoidal, V font, H font; With trapezoidal sealing ring is good.
Further, described sealing ring (3) is a cross section when being trapezoidal sealing ring, the diameter D of its operating theater instruments through hole (31)
31Between 1mm～5mm, optimum is between 2.5mm～4.5mm; The diameter D of trapezoid sealing ring bottom
32Between 3mm～40mm, optimum is between 10mm～30mm; The thickness δ of trapezoid sealing ring bottom is between 0.05mm～5mm, and the optimum of its thickness δ is between 0.3mm～2mm.
Described sealing device contains dynamic bindiny mechanism (2).
Further, described dynamic bindiny mechanism (2) is meant the elasticity low-intensity district (21) that deforms easily under external force, can recover shape again after distortion external force is removed that elastomeric material forms; Perhaps, dynamically bindiny mechanism (2) is meant that the ball that can move connects rotating mechanism (22) or axle connection rotating mechanism (23).
Described low-intensity district (21) is the groove structure (210) that thickness changes and forms.
Described ball connects the ball (221) that rotating mechanism (22) contains ball stopper slot (220) and can move in ball stopper slot (220), ball (221) can be installed in the ball stopper slot (220) with moving.
The axle (231) that described axle connection rotating mechanism (23) contains a stopper slot (230) and can move in axle stopper slot (230), axle (231) is installed in the stopper slot (230) movingly.
Described sealing device contains translation slide block mechanism (5).
Described translation slide block mechanism (5) contains cross sliding clock (51) and horizontal location plate (52), and the cross sliding clock that can move in the horizontal direction (51) places on the horizontal location plate (52).
Further, contain locating slot (511), cover plate (512), the securing member (513) that dynamic bindiny mechanism (2) is installed on the cross sliding clock (51).
Described connection retaining mechanism (4) is by the embossed card matching mechanism top (101) of locating slot (10) and the bottom (102) of locating slot (10) to be connected and fixed; Perhaps, connecting retaining mechanism (4) is to adopt heat seal or solder technology that the top (101) of locating slot (10) and the bottom (102) of locating slot (10) are connected and fixed by concavo-convex fit structure; Perhaps, connecting retaining mechanism (4) is to adopt Chemical Felter that the top (101) of locating slot (10) and the bottom (102) of locating slot (10) are connected and fixed by concavo-convex fit structure.
The spigot surface of described guide pad (11) is provided with the superslide material coating, and the superslide material coating adopts the water wetted material manufacturing usually, also can adopt the material manufacture of self-lubricating function.
Further, described medical flexible macromolecular material is selected from: medical silica-gel, medical grade rubber, medical polyurethane, medical latex etc. and their combination.
Described guiding mechanism (1), dynamically bindiny mechanism (2), connection retaining mechanism (4) and translation slide block mechanism (5) employing medical macromolecular materials or medical metal material manufacturing, be selected from: medical macromolecular materials such as medical PU, PP, PA, PE, PC, medical ptfe or the like, or medical metal material, as medical stainless steel, medical titanium or titanium alloy, medical titanium nickel shape memory alloy, titanium zirconium-niobium alloy or the like.
This utility model also provides a kind of perforator:
Perforator comprises the described annular seal (7) that is used for perforator of claim 1.
Further, the described annular seal (7) that is used for perforator is installed in the sheath pipe (6) of perforator.
The described annular seal of claim 1 (7) is adopted in the radial seal of described perforator, and infundibulate one word sealing ring is adopted in axial seal.
The described annular seal of claim 1 (7) is adopted in the radial seal of described perforator, and the flip-shell sealing device is adopted in axial seal.
The described annular seal of claim 1 (7) is adopted in the radial seal of described perforator, and spherical sealing device is adopted in axial seal.
In the prior art, the sealing ring of perforator adopts the medical elastic material manufacture usually, and material commonly used is a medical grade silicone, and the epitheca of operating theater instruments adopts the metal manufacturing usually.When operating theater instruments was moved in medical silica-gel, its frictional resistance was bigger, and the frictional resistance between operating theater instruments metal epitheca and the plastics is then smaller.Difference of the present utility model be in: with contacting between the plastics spigot surface of guide pad and the operating theater instruments metal epitheca, substitute contacting between silica gel sealing ring and the operating theater instruments metal epitheca, the contact area of encircling the silica gel sealing ring of operating theater instruments is dwindled as much as possible, thereby reach the purpose that reduces frictional resistance.
Be combined into the rotation body structure that the upper end is big, the centre is little, the lower end is big between the guide pad of guiding mechanism of the present utility model, locating slot is located at the wasp waist portion of guide pad, and the bottom of sealing ring is embedded in the locating slot, encircles guide pad in mode from outside to inside.When inserting operating theater instruments, the sealing ring that is compressed in the locating slot overflows from the gap location between the guide pad, encircles operating theater instruments, forms sealing.The sealing device of this utility model has reduced the contact area between sealing ring and the operating theater instruments to greatest extent, not only has guide function when operating theater instruments enters or withdraw from, be fit to different shape operating theater instruments insertion and withdraw from; And with " soft-hard " friction zone between sealing ring and the operating theater instruments, be converted into " hard-hard " friction zone between the metal epitheca of the plastics spigot surface of guide pad and operating theater instruments to greatest extent, reduced the resistance of motion of operating theater instruments in sealing device and perforator significantly.Simultaneously, sealing device of this utility model and perforator can use the operating theater instruments of any diameter between 5mm～12mm, good sealing effect, and the resistance of motion is low.
In addition, the lower end guide pad of the guiding mechanism of the sealing device of this utility model not only has guide function, and when operating theater instruments is removed for outside time, prevents the effect of the skull patch of sealing ring in addition.The skull patch of sealing ring can increase operating theater instruments greatly and return resistance when removing, and the sealing device of this utility model has effectively been avoided the skull patch phenomenon.
Adopt the sealing device of this utility model, can insert diameter arbitrarily and be the operating theater instruments between the 12mm to 5mm, and keep good dynamic sealing performance, realize general purpose.Sealing device of this utility model and perforator can also be realized that the operating theater instruments of diameter between 5mm～15mm change arbitrarily, and keep the low resistance of motion.
Description of drawings
Fig. 1-the 1st, the structural representation of the general sealing ring of prior art.
Fig. 1-2 is the structural representation after the sealing ring of Fig. 1-1 inserts operating theater instruments.
Fig. 2-the 1st, the structural representation of the 4 lobe formula annular seals of this utility model.
Fig. 2-the 2nd, the fundamental diagram of Fig. 2-1.
Fig. 2-the 3rd, the side view of Fig. 2-1.
Fig. 2-the 4th, the perspective view of the guiding mechanism of part on Fig. 2-3.
Fig. 2-the 5th, the perspective view of the guiding mechanism of part under Fig. 2-3.
Fig. 2-the 6th, the structural representation of guide pad.
Fig. 2-the 7th, the lateral structural representation of guide pad.
Fig. 2-the 8th, the position view between each guide pad of composition guiding mechanism.
Fig. 2-the 9th, the explosive view of Fig. 2-3.
Fig. 3-the 1st, the structural representation of the sealing device of the wedge shape locating slot of this utility model.
Fig. 3-the 2nd, the structural representation of the guide pad of band wedge shape locating slot.
Fig. 3-the 3rd, the lateral structural representation of the guide pad of band wedge shape locating slot.
Fig. 3-the 4th, the position view between each guide pad of band wedge shape locating slot composition guiding mechanism.
Fig. 4-the 1st, the structural representation of the sealing device of dynamic bindiny mechanism this utility model of employing groove structure.
Fig. 4-the 2nd holds perspective view on Fig. 4-1.
Fig. 5-the 1st adopts the spherical dynamically structural representation of the sealing device of bindiny mechanism's this utility model.
Fig. 5-the 2nd, the position view between each guide pad of the sealing device of this utility model of Fig. 5-1.
Fig. 6-the 1st, the structural representation of the perforator of this utility model.
Fig. 6-the 2nd, the structural representation of the perforator sheath pipe of this utility model.
Among the above-mentioned figure:
1 is that guiding mechanism, 2 is that dynamic bindiny mechanism, 3 is that sealing ring, 4 is for connecting retaining mechanism, 5 are the translation slide block mechanism, and 6 are puncture sheath pipe, and 7 is the sealing device of this utility model, 8 is operating theater instruments or puncturing lever, and 9 is the check valve or the axial sealer of perforator.
10 is that locating slot, 11 is that guide pad, 12 is the gap between the guide pad, and 101 is the top of locating slot, and 102 is the bottom of locating slot, and 115 take as the leading factor to slide block, and 116 is secondary guide runner.
21 is elasticity low-intensity district, and 22 for ball connects rotating mechanism, and 23 is the rotating mechanism of shaft connection mechanism; 210 is the groove structure in low-intensity district, 220 ball stopper slots for ball connection rotating mechanism, and 221 is the ball that can move in the ball stopper slot, and 230 is an axle stopper slot, and 231 is the axle that can move in the axle stopper slot.
31 is the operating theater instruments through hole of sealing ring, and 32 is the bottom of sealing ring, and 33 for sealing ring is used for localized through hole, and 35 is the low-intensity relief area that strain takes place easily.
41 for connecting the pin hole of retaining mechanism, and 42 is pin.
51 is last horizontal location plate, and 52 are following horizontal location plate, and 511 is the locating slot of dynamic bindiny mechanism, and 512 is the cover plate of dynamic bindiny mechanism, and 513 is the securing member of loam cake.
The α angle be locating slot top (101) with the vertical base of locating slot between angle;
The β angle is the angle between the vertical base with locating slot of bottom (102) of locating slot (10);
The γ angle is that the top of guiding mechanism (1) is by the conical cone angle that forms between the guide pad (11).
δ is the thickness of sealing ring bottom.
T is that the front end of locating slot (10) is to the thickness between the spigot surface of the wasp waist part of guide pad (11).
D
12For diameter is the circular arc position of 12mm, D
31Be the diameter of sealing ring operating theater instruments through hole, D
32Diameter for the sealing ring bottom.
L-SH is in the length of inserting " soft-hard " friction zone that forms between the silica gel sealing ring and operating theater instruments after the operating theater instruments of 12mm, the length of " hard-firmly " friction zone that forms between the metal epitheca of L-HH for the plastics of spigot surface on after the operating theater instruments of inserting 12mm and operating theater instruments.
The specific embodiment
Embodiment 1: the 4 lobe formula annular seals of this utility model of the dynamic bindiny mechanism of axle shape.
With reference to figure 2-1 to Fig. 2-9,, design concrete detail drawing according to the technical scheme of this utility model.
To Fig. 2-2, Fig. 2-1 also is the A-A cutaway view of Fig. 2-3 at Fig. 2-1.D
31Be the diameter of sealing ring operating theater instruments through hole (31), D
12Be that diameter is the circular arc position of 12mm, L-SH is illustrated in the length of " soft-hard " friction zone that forms between the metal epitheca of back silica gel sealing ring (3) of the operating theater instruments (8) of inserting 12mm and operating theater instruments.After L-HH is illustrated in the operating theater instruments of inserting 12mm, the length of " hard-hard " friction zone that forms between the metal epitheca of the plastics spigot surface of guide pad (11) and operating theater instruments (8).The γ angle is that the top of guiding mechanism (1) is by the conical cone angle that forms between the guide pad (11).
At Fig. 2-1 to Fig. 2-2, be combined into the rotation body structure that the upper end is big, the centre is little, the lower end is big between the guide pad (11), locating slot (10) is located at the wasp waist portion of guide pad (11), the bottom (32) of sealing ring (3) is embedded in the locating slot (10), and sealing ring (3) is encircled guide pad (11) in mode from outside to inside.
After inserting 12mm operating theater instruments (8), guide pad (11) outwards opens, and the gap (12) between the guide pad (11) is strengthened, and the sealing ring that is compressed in the locating slot (10) overflows from the gap between the guide pad (12), encircles operating theater instruments, forms sealing.
" soft-hard " friction zone that forms between the metal epitheca of the silica gel sealing ring of the sealing device of this utility model and operating theater instruments length L-SH, after inserting 12mm operating theater instruments (8), suitable with the height of locating slot (10), the frictional resistance when so just greatly reducing the operating theater instruments motion.
Guide pad (11), connection retaining mechanism (4), translation slide block mechanism (5) adopt the medical macromolecular materials manufacturing, and material is selected from: include but not limited to medical materials such as medical PP, medical PE, medical PU, medical PA, medical PC, medical ptfe.Wherein, the spigot surface of guide pad (11) can also be provided with the superslide material coating and reduces the operating theater instruments frictional resistance in when motion.
Sealing ring (3) adopts the medical elastic material manufacture, includes but not limited to: flexible medical materials such as medical silica-gel, medical grade rubber, medical polyurethane, medical latex.
During assembling, the bottom (32) of sealing ring (3) is embedded in the locating slot (10) of guiding mechanism (1), the bottom (32) of sealing ring, top (101) and following (102) of locating slot is connected and fixed the formation hermetically-sealed construction by connecting retaining mechanism (4).
Present embodiment, be combined into the rotation body structure that the upper end is big, the centre is little, the lower end is big between the guide pad (11), locating slot (10) is located at the wasp waist portion of guide pad (11), and the bottom (32) of sealing ring (3) is pricked in the locating slot (10) of guide pad (11) with mode ring set from outside to inside.
The dynamic bindiny mechanism (2) of guiding mechanism (1) realizes by the axle connection rotating mechanism (23) that is arranged on the translation slide block mechanism (5).Cross sliding clock (51) on the translation slide block mechanism (5) can carry out two-dimentional relative motion at horizontal location plate (52) upper edge horizontal plane, and promptly translation slide block mechanism (5) can be regulated the position of the axis of the rotation body structure that is combined between the guide pad (11).
Axle (231) is installed in the stopper slot (230) movingly, when inserting operating theater instruments (8), axle (231) can rotate along clockwise direction, the guide pad (11) of guiding mechanism (1) outwards opens, gap (12) between the guide pad (11) is strengthened, the diameter of the operating theater instruments through hole (31) of sealing ring (3) also increases, and makes things convenient for the insertion of operating theater instruments.Simultaneously, the sealing ring (3) that is compressed in the locating slot (10) overflows from the gap between the guide pad (12), with the thin-walled that guide pad (11) wasp waist portion locating slot (10) is located to form, encircles the metal epitheca of operating theater instruments, forms sealing.
Here, the front end of locating slot (10) is T to the thickness of the thin-walled between the spigot surface of the wasp waist part of guide pad (11).Thickness T is more little, and material is soft more, and the applying of itself and operating theater instruments outer wall is also just good more.After sealing ring (3) overflows from gap (12), together with the thin-walled between the spigot surface of the wasp waist part of guide pad (11) form to the encircling of operating theater instruments, thickness T is more little, the sealing ring that overflows is soft more, then the epitheca stickiness to operating theater instruments is good more, and then sealability is strong more.
Clinical use shows that the annular seal of this utility model can satisfy fully keeps the requirement that pneumoperitoneum is pressed in the laparoscopic surgery.According to the material difference of making guide pad (11), thickness T is between 0.01mm～2mm, and preferred values is between 0.05mm～1mm.Adopting the good materials of pliability such as medical PP, medical PU, medical ptfe to make guide pad (11) is more satisfactory selection, thickness T can be controlled between 0.05～0.15mm, make guide pad (11) wasp waist portion and with from the gap (12) overflow silica gel sealing ring operating theater instruments had the good ability of encircling, obtain preferable dynamic seal (packing) effect.
When withdrawing from operating theater instruments (8), the spigot surface of guiding mechanism (1) lower end plays guide effect, allow operating theater instruments conveniently withdraw from, and under the effect of the elastic restoring force of sealing ring (3), guide pad (11) inwardly shrinks, axle (231) rotates in the counterclockwise direction, gap (12) between the guide pad (11) reduces, guide pad (11) and sealing ring (3) return to the original state that no operating theater instruments is inserted, the operating theater instruments through hole (31) that is sealing ring returns to initial diameter, simultaneously guide pad (11) also returns to the initial position of no operating theater instruments when inserting, and promptly is combined into the upper end between the guide pad (11) greatly, middle little, the rotation body structure that the lower end is big.
Adopt design of the present utility model, no matter be the insertion of operating theater instruments or release, the resistance of motion of operating theater instruments mainly is that " hard-hard " between the plastics spigot surface of metal epitheca and guide pad (11) of operating theater instruments rubs." soft-hard " friction zone between the metal epitheca of sealing ring (3) and operating theater instruments be the sealing ring (3) that overflows from gap (12) with the metal epitheca of operating theater instruments between " soft-firmly " friction zone of forming.Should " soft-hard " length L-SH of friction zone suitable with the height of locating slot (10), so reduced " soft-firmly " friction zone significantly, the lower resistance when having realized the motion of operating theater instruments.
In the present embodiment, between 180 °～20 °, optimum is between 100 °～30 ° by the conical cone angle γ that forms between the guide pad (11) on the top of guiding mechanism (1).
In addition, the lower end targeting part of the guiding mechanism of the sealing device of this utility model (1) not only has guide function, and outwards returns the effect that prevents the skull patch of sealing ring when removing in addition in operating theater instruments.The skull patch of sealing ring can increase operating theater instruments greatly and return resistance when removing, and the sealing device of this utility model has been avoided the skull patch phenomenon.
Adopt the sealing device of this utility model, can insert diameter arbitrarily and be any operating theater instruments between 5mm～12mm, and keep good dynamic sealing performance.Sealing device of this utility model and perforator can also realize that the operating theater instruments of diameter between 5mm～15mm change arbitrarily, and keep the lower resistance of motion.
Present embodiment, can also pass through heat seal process or the agglutinating mode of Chemical Felter, the top (101) of locating slot and the bottom (102) of locating slot are connected and fixed, after the pin (42) of projection passes the bottom (32) of silicone rubber O-ring (3), enter pin hole (41) and form concavo-convex cooperation.Can adopt supersonic thermal setting technology at this place, the top (101) of locating slot and the bottom (102) of locating slot are connected and fixed.Another kind method is can use Chemical Felter changing concavo-convex cooperation place, and the top (101) of locating slot and the bottom (102) of locating slot are bonded and fixed at together.
Embodiment 2: the sealing device of the wedge shape locating slot of this utility model.
With reference to figure 3-1 to Fig. 3-4, the know-why of present embodiment is with embodiment 1, and difference only is: locating slot (10) has adopted wedge structure.Use the purpose of wedge-shaped slot to be: when sealing ring being compressed, fixes with connecting retaining mechanism (4), when forming hermetically-sealed construction, because the pressure of two hypotenuses makes sealing ring form extruding from outside to inside up and down, strengthen the encircle power of sealing ring (3) to operating theater instruments (8).
In the present embodiment, the top (101) of locating slot (10) and the angle α on the vertical base of locating slot are between 90 °～30 °, and optimum is between 87 °～45 °; The bottom (102) of locating slot (10) and the angle β on the vertical base of locating slot are between 90 °～30 °, and optimum is between 87 °～45 °.
Among Fig. 3-1 the α angle be locating slot top (101) with the vertical base of locating slot between angle, the β angle is the angle between the vertical base with locating slot of bottom (102) of locating slot (10).T is that the front end of locating slot (10) is to the thickness between the spigot surface of the wasp waist part of guide pad (11).Thickness T is more little, and material is soft more, and the applying of itself and operating theater instruments outer wall is good more, and (12) to overflow the ability of encircling to operating theater instruments that the back forms strong more from the gap for sealing ring (3), and sealability is also good more.Clinical use shows that the annular seal of this utility model can satisfy fully keeps the requirement that pneumoperitoneum is pressed in the laparoscopic surgery.According to the material difference of making guide pad (11), thickness T is between 0.01mm～2mm, and preferred values is between 0.05mm～1mm.Adopting the good materials of pliability such as medical PP, medical PU, medical ptfe to make guide pad (11) is more satisfactory selection, thickness T can be controlled between 0.05～0.15mm, make guide pad (11) wasp waist portion and with from the gap (12) overflow silica gel sealing ring operating theater instruments had the good ability of encircling, obtain preferable dynamic seal (packing) effect.
Embodiment 3: the sealing device of this utility model of the dynamic bindiny mechanism of concave groove type.
With reference to figure 4-1 to Fig. 4-2, the difference of present embodiment and embodiment 1 is: what the dynamic bindiny mechanism of embodiment 1 adopted is a shape bindiny mechanism, and in the present embodiment, be to form elasticity low-intensity district (21) by groove (210), as dynamic linkage structure (2).
After inserting operating theater instruments (8), groove (210) is located distortion, and drive guide pad (11), sealing ring (3) outwards open, gap (12) increases, the sealing ring that is squeezed (3) overflows by the gap that increases, and encircles the epitheca of the art apparatus of stopping, and plays the effect of sealing.
When withdrawing from operating theater instruments (8), the spigot surface of the lower end of guide pad (11) plays guide effect, allows operating theater instruments conveniently withdraw from.Under the effect of the elastic restoring force of sealing ring (3), return to the original state that no operating theater instruments is inserted, promptly the operating theater instruments through hole (31) of sealing ring returns to initial diameter, the initial position when guide pad (11) also returns to no operating theater instruments insertion simultaneously.
Embodiment 4: the spherical dynamically sealing device of this utility model of bindiny mechanism.
With reference to figure 5-1 to Fig. 5-2, the difference of present embodiment and embodiment 1 is: what the dynamic bindiny mechanism of embodiment 1 adopted is a shape bindiny mechanism, and in the present embodiment, is to adopt ball-joint mechanism, as dynamic linkage structure (2).Ball (221) is installed in the spherical stopper slot (220) of ball bindiny mechanism, and ball (221) can do relative motion in spherical stopper slot (220).
After inserting operating theater instruments (8), guide pad (11) and sealing ring (3) outwards open, and gap (12) increase, and the sealing ring that is squeezed (3) overflows by the gap that increases, and encircles the epitheca of the art apparatus of stopping, and plays the effect of sealing.
When withdrawing from operating theater instruments (8), the spigot surface of the lower end of guide pad (11) plays guide effect, allows operating theater instruments conveniently withdraw from.Under the effect of the elastic restoring force of sealing ring (3), return to the original state that no operating theater instruments is inserted, promptly the operating theater instruments through hole (31) of sealing ring returns to initial diameter, the initial position when guide pad (11) also returns to no operating theater instruments insertion simultaneously.
Embodiment 5: the perforator of this utility model.
With reference to figure 6-1 to Fig. 6-2, in the present embodiment, the annular seal of this utility model has been adopted in radial seal, and in axial seal, promptly check valve (9) has then adopted silicone rubber in-line sealing ring.
Present embodiment, be combined into the rotation body structure that the upper end is big, the centre is little, the lower end is big between the guide pad (11), locating slot (10) is located at the wasp waist portion of guide pad (11), and the bottom (32) of sealing ring (3) is pricked in the locating slot (10) of guide pad (11) with mode ring set from outside to inside.
The dynamic bindiny mechanism (2) of guiding mechanism (1) realizes by the axle connection rotating mechanism (23) that is arranged on the translation slide block mechanism (5).Cross sliding clock (51) on the translation slide block mechanism (5) can carry out two-dimentional relative motion at horizontal location plate (52) upper edge horizontal plane, and promptly translation slide block mechanism (5) can be regulated the position of the axis of the rotation body structure that is combined between the guide pad (11).
Axle (231) is installed in the stopper slot (230) movingly, when inserting operating theater instruments (8), axle (231) can rotate along clockwise direction, the guide pad (11) of guiding mechanism (1) outwards opens, gap (12) between the guide pad (11) is strengthened, the diameter of the operating theater instruments through hole (31) of sealing ring (3) also increases, and makes things convenient for the insertion of operating theater instruments.Simultaneously, the sealing ring (3) that is compressed in the locating slot (10) overflows from the gap between the guide pad (12), with the thin-walled that guide pad (11) wasp waist portion locating slot (10) is located to form, encircles the metal epitheca of operating theater instruments, forms sealing.
Here, the front end of locating slot (10) is T to the thickness of the thin-walled between the spigot surface of the wasp waist part of guide pad (11).Thickness T is more little, and material is soft more, and the applying of itself and operating theater instruments outer wall is also just good more.After sealing ring (3) overflows from gap (12), together with the thin-walled between the spigot surface of the wasp waist part of guide pad (11) form to the encircling of operating theater instruments, thickness T is more little, the sealing ring that overflows is soft more, then the epitheca stickiness to operating theater instruments is good more, and then sealability is strong more.Clinical use shows that the annular seal of this utility model can satisfy fully keeps the requirement that pneumoperitoneum is pressed in the laparoscopic surgery.According to the material difference of making guide pad (11), thickness T is between 0.01mm～2mm, and preferred values is between 0.05mm～1mm.Adopting the good materials of pliability such as medical PP, medical PU, medical ptfe to make guide pad (11) is more satisfactory selection, thickness T can be controlled between 0.05～0.15mm, make guide pad (11) wasp waist portion and with from the gap (12) overflow silica gel sealing ring operating theater instruments had the good ability of encircling, obtain preferable dynamic seal (packing) effect.
When withdrawing from operating theater instruments (8), the spigot surface of guiding mechanism (1) lower end plays guide effect, allow operating theater instruments conveniently withdraw from, and under the effect of the elastic restoring force of sealing ring (3), guide pad (11) inwardly shrinks, axle (231) rotates in the counterclockwise direction, gap (12) between the guide pad (11) reduces, guide pad (11) and sealing ring (3) return to the original state that no operating theater instruments is inserted, the operating theater instruments through hole (31) that is sealing ring returns to initial diameter, simultaneously guide pad (11) also returns to the initial position of no operating theater instruments when inserting, and promptly is combined into the upper end between the guide pad (11) greatly, middle little, the rotation body structure that the lower end is big.
Adopt design of the present utility model, no matter be the insertion of operating theater instruments or release, the resistance of motion of operating theater instruments mainly is that " hard-hard " between the plastics spigot surface of metal epitheca and guide pad (11) of operating theater instruments rubs." soft-hard " friction zone between the metal epitheca of sealing ring (3) and operating theater instruments be the sealing ring (3) that overflows from gap (12) with the metal epitheca of operating theater instruments between " soft-firmly " friction zone of forming.Should " soft-hard " length L-SH of friction zone suitable with the height of locating slot (10), so reduced " soft-firmly " friction zone significantly, the lower resistance when having realized the motion of operating theater instruments.
In addition, the apex combustion seal of the perforator of this utility model can adopt the annular seal of this utility model, and axial sealer is that check valve (9) adopts the flip-shell sealing device.Adopt the perforator of this utility model of this combination, when not having operating theater instruments to insert, the silica gel sealing ring of the spring compressing flip-shell sealing device of flip-shell sealing device prevents CO
2The leakage of gas.
When inserting operating theater instruments, operating theater instruments (8) enters along last guiding mechanism (1), guide pad (11) outwards opens, gap (12) between the guide pad (11) progressively enlarges, the bottom of sealing ring (3) deforms, and the operating theater instruments through hole (31) of sealing ring is encircled operating theater instruments (8), forms radial seal.Simultaneously, renovate by operating theater instruments and back down, operating theater instruments can enter in the body cavity.
When withdrawing from operating theater instruments, operating theater instruments (8) progressively withdraws from along guiding mechanism (1), guide pad (11) is under the effect of the elastic restoring force of sealing ring (3), progressively entad shrink, gap (12) progressively dwindles, when operating theater instruments withdrawed from fully, the operating theater instruments through hole (31) of sealing ring returned to original state fully.Simultaneously, the silica gel sealing ring of the spring of flip-shell sealing device compressing flip-shell sealing device, closing axle prevents CO to check valve once more
2The leakage of gas.
The apex combustion seal of the perforator of this utility model can adopt the annular seal of this utility model, and axial sealer is that check valve (9) adopts spherical sealing device.
It is to be noted, Magnet can be installed in the guiding mechanism (1) of the sealing device of this utility model, adopt ferrimagnet to make hollow ball, under the attraction of magnetic force, the operating theater instruments through hole (31) of the sealing ring of the sealing device of spheroid and this utility model forms axial seal, i.e. check valve (9).
When inserting operating theater instruments, operating theater instruments (8) enters along guiding mechanism (1), guide pad (11) outwards opens, gap (12) between the guide pad (11) progressively enlarges, the bottom of sealing ring (3) deforms, and the operating theater instruments through hole (31) of sealing ring is encircled operating theater instruments (8), forms radial seal.Simultaneously, hollow ball is backed down by operating theater instruments, and operating theater instruments can enter in the body cavity.
When withdrawing from operating theater instruments, operating theater instruments (8) progressively withdraws from along guiding mechanism (1), guide pad (11) is under the effect of the elastic restoring force of sealing ring (3), progressively entad shrink, gap (12) progressively dwindles, when operating theater instruments withdrawed from fully, the operating theater instruments through hole (31) of sealing ring returned to original state fully.Simultaneously, the operating theater instruments through hole (31) of hollow ball plug for seal circle under the effect of magnetic force plays the axial seal effect, prevents CO
2The leakage of gas.
In addition, the puncturing lever that the perforator of this utility model uses can be the puncturing lever of band protection cutter head, also can be the puncturing lever of not being with the protection cutter head, as triangle tooth shape puncturing lever, conical blunt nosed puncturing lever, blunt nosed puncturing lever of flank or the like is arranged.
Should be noted that herein openly can replace with the identical structure of other effect that the embodiment that while this utility model is introduced realizes unique structure of the present utility model with the structure of explanation.Though preferential embodiment of the present utility model is introduced in this article and is illustrated; but those skilled in the art know and know that these embodiment illustrate; those skilled in the art can make countless variations, improvement and replacement; and can not break away from this utility model; therefore, should limit protection domain of the present utility model according to the spirit and scope of this utility model appending claims.
Claims (26)
1. the ring-like sealing device that is used for perforator is characterized in that described sealing device contains guiding mechanism (1), sealing ring (3);
Guiding mechanism (1) comprises locating slot (10) and at least 2 guide pads (11) that sealing ring is installed;
Be combined into the rotation body structure that the upper end is big, the centre is little, the lower end is big between the guide pad (11); Locating slot (10) is located at the wasp waist portion of guide pad (11);
Sealing ring (3) adopts the manufacturing of elasticity medical macromolecular materials, which is provided with operating theater instruments through hole (31); Sealing ring (3) is installed in the locating slot (10).
2. according to the described ring-like sealing device that is used for perforator of claim 1, the bottom that it is characterized in that the close operating theater instruments through hole (31) of described sealing ring (3) places between the top (101) and following (102) of locating slot (10), be fixed together by connecting retaining mechanism (4), form hermetically-sealed construction.
3. according to the described ring-like sealing device that is used for perforator of claim 2, the top (101) that it is characterized in that described locating slot (10) and the angle α on the vertical base of locating slot are between 90 °～30 °; The bottom (102) of locating slot (10) and the angle β on the vertical base of locating slot are between 90 °～30 °.
4. according to the described ring-like sealing device that is used for perforator of claim 3, the top (101) that it is characterized in that described locating slot (10) and the angle α on the vertical base of locating slot are between 87 °～45 °; The bottom (102) of locating slot (10) and the angle β on the vertical base of locating slot are between 87 °～45 °.
5. according to the described ring-like sealing device that is used for perforator of claim 1, the angle γ that it is characterized in that the vertebral body that described guiding mechanism (1) upper end is formed by guide pad (11) is between 180 °～20 °.
6. according to the described ring-like sealing device that is used for perforator of claim 5, the angle γ that it is characterized in that the vertebral body that described guiding mechanism (1) upper end is formed by guide pad (11) is between 100 °～30 °.
7. according to the described ring-like sealing device that is used for perforator of claim 1, it is characterized in that described guiding mechanism (1) contains 4 guide pads (11); Form a pair of leading to slide block (115) by the bigger guide pad of the area of 2 spigot surfaces (11), the less guide pad (11) of the area of remaining 2 spigot surface forms a pair of secondary guide runner (116), and leading have different colors to slide block (115) with secondary guide runner (116).
8. according to the described ring-like sealing device that is used for perforator of claim 1, it is characterized in that the submarginal part in upper end of described sealing ring (3) contains the low-intensity relief area (35) of easy generation strain.
9. the described according to Claim 8 ring-like sealing device that is used for perforator is characterized in that the low-intensity relief area (35) of described sealing ring adopts ripple struction.
10. according to the described ring-like sealing device that is used for perforator of claim 1, it is characterized in that described sealing ring (3) is that cross section is the sealing ring of trapezoidal, V font, H font.
11., it is characterized in that described sealing ring (3) is a cross section when being trapezoidal sealing ring, the diameter D of its operating theater instruments through hole (31) according to the described ring-like sealing device that is used for perforator of claim 10
31Between 1mm～5mm; The diameter D of trapezoid sealing ring bottom
32Between 3mm～40mm; The thickness δ of trapezoid sealing ring bottom is between 0.05mm～5mm.
12., it is characterized in that described sealing ring (3) is a cross section when being trapezoidal sealing ring, the diameter D of its operating theater instruments through hole (31) according to the described ring-like sealing device that is used for perforator of claim 11
31Between 2.5mm～4.5mm; The diameter D of trapezoid sealing ring bottom
32Between 10mm～30mm; The thickness δ of trapezoid sealing ring bottom is between 0.3mm～2mm.
13., it is characterized in that described sealing device contains dynamic bindiny mechanism (2) according to the described ring-like sealing device that is used for perforator of claim 1.
14., it is characterized in that described dynamic bindiny mechanism (2) is meant the elasticity low-intensity district (21) that deforms easily under external force, can recover shape again after distortion external force is removed that elastomeric material forms according to the described ring-like sealing device that is used for perforator of claim 13.
15., it is characterized in that described dynamic bindiny mechanism (2) is meant that the ball that can move connects rotating mechanism (22) or axle connection rotating mechanism (23) according to the described ring-like sealing device that is used for perforator of claim 13.
16., it is characterized in that described low-intensity district (21) is the groove structure (210) that thickness changes and forms according to the described ring-like sealing device that is used for perforator of claim 14.
17. according to the described ring-like sealing device that is used for perforator of claim 15, it is characterized in that described ball connects the ball (221) that rotating mechanism (22) contains ball stopper slot (220) and can move in ball stopper slot (220), ball (221) can be installed in the ball stopper slot (220) with moving.
18. according to the described ring-like sealing device that is used for perforator of claim 15, it is characterized in that the axle (231) that described axle connection rotating mechanism (23) contains a stopper slot (230) and can move in axle stopper slot (230), axle (231) is installed in the stopper slot (230) movingly.
19., it is characterized in that described sealing device contains translation slide block mechanism (5) according to the described ring-like sealing device that is used for perforator of claim 1.
20. according to the described ring-like sealing device that is used for perforator of claim 19, it is characterized in that described translation slide block mechanism (5) contains cross sliding clock (51) and horizontal location plate (52), the cross sliding clock that can move in the horizontal direction (51) places on the horizontal location plate (52).
21., it is characterized in that containing on the described cross sliding clock (51) locating slot (511), cover plate (512), the securing member (513) that dynamic bindiny mechanism (2) is installed according to the described ring-like sealing device that is used for perforator of claim 20.
22. perforator is characterized in that comprising the described ring-like sealing device (7) that is used for perforator of claim 1.
23., it is characterized in that the described ring-like sealing device (7) that is used for perforator is installed in the sheath pipe (6) of perforator according to the described perforator of claim 22.
24. according to the described perforator of claim 22, it is characterized in that the described ring-like sealing device of claim 1 (7) is adopted in the radial seal of described perforator, infundibulate one word sealing ring is adopted in axial seal.
25. according to the described perforator of claim 22, it is characterized in that the described ring-like sealing device of claim 1 (7) is adopted in the radial seal of described perforator, the flip-shell sealing device is adopted in axial seal.
26. according to the described perforator of claim 22, it is characterized in that the described ring-like sealing device of claim 1 (7) is adopted in the radial seal of described perforator, spherical sealing device is adopted in axial seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206727110U CN202051787U (en) | 2010-12-21 | 2010-12-21 | Annular sealing device used in puncture set and puncture set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206727110U CN202051787U (en) | 2010-12-21 | 2010-12-21 | Annular sealing device used in puncture set and puncture set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202051787U true CN202051787U (en) | 2011-11-30 |
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ID=45011775
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206727110U Expired - Fee Related CN202051787U (en) | 2010-12-21 | 2010-12-21 | Annular sealing device used in puncture set and puncture set |
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| Country | Link |
|---|---|
| CN (1) | CN202051787U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102429707A (en) * | 2011-12-30 | 2012-05-02 | 安徽奥弗医疗设备科技有限公司 | Turnable sealing ring assembly in puncture outfit |
| WO2012083798A1 (en) * | 2010-12-21 | 2012-06-28 | Zhou Xing | Ring seal device for trocar and trocar |
| CN103356269A (en) * | 2012-03-26 | 2013-10-23 | 周星 | Self-lubricating trocar |
| CN109106429A (en) * | 2018-08-22 | 2019-01-01 | 郭鸿洲 | A kind of internal medicine operation basin bottom operation puncturing device |
-
2010
- 2010-12-21 CN CN2010206727110U patent/CN202051787U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012083798A1 (en) * | 2010-12-21 | 2012-06-28 | Zhou Xing | Ring seal device for trocar and trocar |
| CN102551845A (en) * | 2010-12-21 | 2012-07-11 | 周星 | Puncture device and annular sealing device for same |
| CN102551845B (en) * | 2010-12-21 | 2016-03-02 | 周星 | For annular sealing device and the perforator of perforator |
| US9597115B2 (en) | 2010-12-21 | 2017-03-21 | Guangzhou T. K. Medical Instrument Co. Ltd. | Ring sealing apparatus for trocar and trocar |
| CN102429707A (en) * | 2011-12-30 | 2012-05-02 | 安徽奥弗医疗设备科技有限公司 | Turnable sealing ring assembly in puncture outfit |
| CN102429707B (en) * | 2011-12-30 | 2013-08-14 | 安徽奥弗医疗设备科技有限公司 | Turnable sealing ring assembly in puncture outfit |
| CN103356269A (en) * | 2012-03-26 | 2013-10-23 | 周星 | Self-lubricating trocar |
| CN109106429A (en) * | 2018-08-22 | 2019-01-01 | 郭鸿洲 | A kind of internal medicine operation basin bottom operation puncturing device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20161221 |