CN202211733U

CN202211733U - Low-resistance universal sealing unit for puncture device and puncture device

Info

Publication number: CN202211733U
Application number: CN2010206600105U
Authority: CN
Inventors: 周星; 李艳芳; 张建刚; 罗丽飞
Original assignee: 周星
Priority date: 2010-12-14
Filing date: 2010-12-14
Publication date: 2012-05-09
Anticipated expiration: 2020-12-14

Abstract

The utility model provides a low-resistance universal sealing unit for a puncture device and a puncture device. Due to the adoption of a structure where a sealing ring is compressed between an upper guide mechanism and a lower guide mechanism and the contact area between the sealing ring and a surgical instrument is reduced to the maximum extent through the smooth transition between the upper guide mechanism and the lower guide mechanism, the sealing unit has the guide function when the surgical instrument is inserted or extracted, and is suitable for insertion and extraction of surgical instruments of various shapes. In addition, the 'soft-hard' friction region between the sealing ring and the surgical instrument is changed to a 'hard-hard' friction region between plastics of upper and guide surfaces and an external metal sheath of the surgical instrument, thereby significantly reducing the movement resistance and achieving good sealing effect. Meanwhile, the sealing unit and the puncture device of the utility model allow the adoption of instruments with any diameter between 5 mm and 12 mm, thereby realizing the universality.

Description

The all-purpose sealed device of lower resistance and the perforator that are used for perforator

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 in laparoscopic surgery, uses and used the sealing device.

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 hermetically-sealed construction of the perforator of prior art is made up of radial direction seal ring and check valve.Wherein common check valve, promptly axial sealer has two kinds.One of which is a spring pressuring plate formula structure, promotes baffle plate compressing silica gel sealing ring through spring leaf and forms sealing.Be made up of spring leaf, baffle plate, silica gel sealing ring, spring leaf, baffle plate adopt the rustless steel manufacturing usually, and the sealing ring of this form often uses in the perforator of nonexpondable made, and this perforator price is more expensive, and weight is heavier.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, utilizes the pressure that the carbon dioxide pneumoperitoneum forms in contractility and the use of silica gel itself; Reach the effect of sealing, this infundibulate silica gel sealing ring is widely used in disposable puncture device usually.Radial direction seal ring adopts the funnel-shaped structure of band centre bore usually, and this sealing ring leaks when operating theater instruments is rocked especially easily, the movable sealing weak effect.In addition, in the medical silica-gel sealing ring at 4mm, when inserting the operating theater instruments of 10mm or 12mm, the reciprocating resistance of operating theater instruments is also big, and this has brought inconvenience for doctor's operation technique.

In addition; The head of operating theater instruments has various shape, particularly is similar to the operating theater instruments of this type of titanium clamp pincers, is passing through perforator when intraperitoneal is sent; Its binding clip is open V font, and the infundibulate silica gel sealing ring of prior art often can't pass through this type operating forceps.The another one shortcoming of V word infundibulate silica gel sealing ring is the operating theater instruments of or raised step fluted to heads such as ultrasound knifes, when withdrawing from, blocks operating theater instruments easily, and it is not smooth to move.

Thereby need improvement to have the apex combustion seal of perforator now; To reach the apparatus 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; Equally on diameter is the perforator of 12mm, not only can use the apparatus 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, make things convenient for the entering of apparatus and withdraw from, and resistance is low, and motion is smooth.Obviously, the sealing device 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 gasket set of perforator use and the perforator that has used this sealing device, can use the apparatus of any diameter between 5mm～12mm, realizes its versatility; Not only require good sealing effect, and the lower resistance will realize that operating theater instruments moves back and forth above that the time.

The core of the technical scheme of this utility model is:

Sealing ring is compressed between guiding mechanism and the lower guide mechanism, through the rounding off between last guiding mechanism and the lower guide mechanism, has reduced the contact area of sealing ring and operating theater instruments to greatest extent.The design of this technical scheme has guide function when not only apparatus gets into or withdraws 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 plastics and operating theater instruments of upper and lower spigot surface 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 all-purpose sealed device of lower resistance that is used for perforator, said sealing device are provided with guiding mechanism (1), lower guide mechanism (2), sealing ring (3) and are connected retaining mechanism (4); Wherein:

Last guiding mechanism (1) is provided with the top shoe (11) more than 2 or 2, big, the little funnel-shaped structure in lower end on being combined between the top shoe (11), and top shoe (11) is provided with spigot surface (111);

Lower guide mechanism (2) is provided with the sliding block (21) more than 2 or 2, is combined into the funnel-shaped structure that falls that the upper end is little, the lower end is big between the sliding block (21), and sliding block (21) is provided with spigot surface (211);

Sealing ring (3) adopts the manufacturing of elasticity medical macromolecular materials, which is provided with operating theater instruments through hole (31);

Connecting retaining mechanism (4) is concavo-convex fit structure;

Connection retaining mechanism (4) will go up guiding mechanism (1) and lower guide mechanism (2) is connected and fixed, and sealing ring (3) places between guiding mechanism (1) and the lower guide mechanism (2); Form rounding off between top shoe (11) and the corresponding sliding block (21); The diameter of the operating theater instruments through hole (31) on the sealing ring (3) is less than the diameter of the upper end through hole (22) of the diameter of the lower end through hole (12) of last guiding mechanism (1) and lower guide mechanism.

Further, will go up guiding mechanism (1) through the embossed card matching mechanism and lower guide mechanism (2) is connected and fixed in said connection retaining mechanism (4); Perhaps, connect that retaining mechanism (4) adopts heat seal through concavo-convex fit structure or solder technology will go up guiding mechanism (1) and lower guide mechanism (2) is connected and fixed; Perhaps, connecting retaining mechanism (4) adopts Chemical Felter will go up guiding mechanism (1) through concavo-convex fit structure and lower guide mechanism (2) is connected and fixed.

When inserting operating theater instruments (8), the top shoe (11) of last guiding mechanism (1) outwards opens, and the gap (13) between the top shoe (11) increases; The sliding block (21) that drives lower guide mechanism (2) simultaneously outwards opens, and the gap between the sliding block (21) increases.

When withdrawing from operating theater instruments (8), under the effect of the elastic restoring force of sealing ring (3), the top shoe (11) of last guiding mechanism (1) inwardly shrinks, and the gap (13) between the top shoe (11) reduces; The sliding block (21) that drives lower guide mechanism (2) simultaneously inwardly shrinks, and the gap between the sliding block (21) reduces.After operating theater instruments (8) withdrawed from fully, the operating theater instruments through hole (31) of sealing ring (3) returned to initial position, went up the top shoe (11) of guiding mechanism (1) and the sliding block (21) of lower guide mechanism (2) simultaneously and also returned to initial position.

The said guiding mechanism (1) of going up is provided with dynamic bindiny mechanism (112).

Further, said dynamic bindiny mechanism (112) is meant the low-intensity district that deforms easily under external force, after distortion external force is removed, can recover shape again that groove or elastomeric material form; Perhaps, dynamically bindiny mechanism (112) is meant the spherical or spacing rotating mechanism of axle shape that can move.

The upper end diameter of forming between the diameter of the lower end through hole (12) of the funnel-shaped structure of forming between the said top shoe (11) that the upper end is big, the lower end is little and the sliding block (21) of the upper end through hole (22) of funnel-shaped structure little, that the lower end is big is close or equates.

Usually, the difference in size between the diameter of the upper end through hole (22) of the diameter of the lower end through hole (12) of last guiding mechanism (1) and lower guide mechanism (2) is less than ± 1.5mm.And the diameter of upper end through hole (22) of diameter and lower guide mechanism (2) of lower end through hole (12) of going up guiding mechanism (1) is all between the big 1mm～6mm of diameter than the operating theater instruments through hole (31) of sealing ring (3), and preferred values is between 1.5mm～4mm.

The 4 lobe formula funnel-shaped structures that the upper end is big, the lower end is little that the said preferred construction that goes up guiding mechanism (1) is made up of 4 top shoes (11); The preferred construction of lower guide mechanism (2) is fallen funnel-shaped structure by the 4 lobe formulas that the upper end that 4 sliding blocks (21) that are complementary with top shoe (11) are formed is little, the lower end is big.

Further; On said 4 compositions in the top shoe (11) of guiding mechanism (1); Form a pair of leading to slide block (115) by the bigger top shoe of the area of 2 spigot surfaces (11); The less top shoe (11) of the area of remaining 2 spigot surface forms a pair of secondary guide runner (116), the leading various colors that has to slide block (115) and secondary guide runner (116).Leading be commonly used to open operating theater instruments is led, the titanium clamp pincers of titanium folder is housed like insertion to slide block (115).Leading to the general blueness or green that adopts of slide block (115); Secondary guide runner (116) then adopts white or black.

The said upward spigot surface (111) of guiding mechanism (1) and the spigot surface (211) of lower guide mechanism (2) are provided with the superslide material coating.The superslide material coating adopts the water wetted material manufacturing usually, also can adopt the material manufacture of self-lubricating function.

The said upward top shoe (11) of guiding mechanism (1) and the sliding block (21) of lower guide mechanism (2) adopt the water wetted material manufacturing usually, also can adopt the material manufacture of self-lubricating function.

Said sealing ring (3) is that cross section is the sealing ring of trapezoidal, closely trapezoidal, V font, nearly H font, is good with trapezoidal or near trapezoidal sealing ring wherein.

Further, said sealing ring (3) is a cross section when being trapezoidal or near trapezoid 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～1.5mm, and the optimum of its thickness δ is between 0.3mm～0.9mm.

The wall thickness of said sealing ring (3) is non-equal thickness.Usually, the wall thickness of sealing ring (3) is thicker on top, and lower part and bottom are thinner.

The angle β of the spigot surface (111) of said upward guiding mechanism (1) and the central shaft of funnel-shaped structure is between 80 °～10 °, and optimum is between 50 °～15 °.

Further, said sealing ring (3) be provided with buffering ring (35), buffering ring (35) is a ripple struction.Buffering ring (35) operated by rotary motion is in sealing ring (3) upper end.

Said upward guiding mechanism (1) can also be fixed on the top of sealing ring (3) through concaveconvex structure.

Said sealing device is provided with the locating piece (52) that is used for fixing sealing ring (3) and/or goes up the dynamic bindiny mechanism (112) of guiding mechanism.When the dynamic bindiny mechanism (112) that will go up guiding mechanism with locating piece (52) is fixed on the upper end of sealing ring (3); Because dynamic linkage structure (112) is fixed together with locating piece (52), and the compression of sealing ring upper end is fixed between dynamic linkage structure (112) and the locating piece (52); Because of the upper end-face edge at sealing ring (3) is provided with buffering ring (35); Above guiding mechanism (1), lower guide mechanism (2) can carry out the two-dimension translational motion by along continuous straight runs together with the operating theater instruments through hole (31) of sealing ring (3), satisfy the motion requirement of different surgery operation.

The lower end of the sliding block of said lower guide mechanism (21) is provided with towing plate (212), and towing plate (212) adopts the manufacturing of elasticity medical macromolecular materials, is selected from medical silica-gel, medical grade rubber, medical polyurethane, medical latex and their combination.Towing plate (212) operating theater instruments (8) when withdrawing from the sliding block (21) to lower guide mechanism draw is arranged, its elastic restoring force also helps sliding block (21) resetting after operating theater instruments (8) withdraws from fully; Towing plate (212) softness does not influence the outside open motion of sliding block (21) when operating theater instruments (8) is inserted simultaneously.

Further, said sealing ring (3) adopts the manufacturing of elasticity medical macromolecular materials.

Said medical flexible macromolecular material is selected from: medical silica-gel, medical grade rubber, medical polyurethane, medical latex etc. and their combination.

Said guiding mechanism (1), lower guide mechanism (2) and be connected retaining mechanism (4) and adopt medical macromolecular materials or medical metal material manufacturing; Be selected from: medical macromolecular materials such as medical PU, PP, PA, PE, PE or the like; Or medical metal material, like 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:

Said perforator includes the all-purpose sealed device of the lower resistance that is used for perforator (7) of this utility model.

Further, the all-purpose sealed device of the lower resistance of this utility model (7) housing (51) that is installed in the sheath pipe (5) of perforator through dynamic bindiny mechanism (112) go up or locating piece (52) on.

The all-purpose sealed device of lower resistance (7) of this utility model is adopted in the radial seal of said perforator, and infundibulate one word sealing ring is adopted in axial seal.

The all-purpose sealed device of lower resistance (7) of this utility model is adopted in the radial seal of said perforator, and the flip-shell sealing device is adopted in axial seal.

The all-purpose sealed device of lower resistance (7) of this utility model is adopted in the radial seal of said perforator, and spherical sealing device is adopted in axial seal.

The sealing ring of perforator adopts the medical elastic material manufacture usually, and commonly used is medical grade silicone, and operating theater instruments adopts metal or plastics manufacturing usually.When the operating theater instruments of metal or plastics manufacturing was moved in medical silica-gel, its frictional resistance was bigger.And the frictional resistance between metal and the plastics is smaller.

Because this utility model has adopted sealing ring has been compressed between guiding mechanism and the lower guide mechanism; Through the rounding off between last guiding mechanism and the lower guide mechanism; Reduced the structure of the contact area of sealing ring and operating theater instruments to greatest extent; Not only when apparatus gets into or withdraws from, have guide function, 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 plastics and operating theater instruments of upper and lower spigot surface 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, realize its versatility; Good sealing effect not only, and the resistance of motion is low.

In addition, the lower guide mechanism of the sealing device of this utility model not only has guide function, and outwards returns the skull patch that prevents sealing ring when removing in addition in operating theater instruments.The skull patch of sealing ring can increase operating theater instruments greatly and return the 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 is the operating theater instruments between the 12mm to 5mm, and keeps good dynamic sealing performance.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.

D in this figure 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.

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 all-purpose sealed device of 4 lobe formula lower resistance of this utility model.

Fig. 2-1 also is the A-A cutaway view of Fig. 2-3.In this figure, 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 plastics of the spigot surface (111) of top shoe (11) and the metal epitheca of operating theater instruments (8).

Fig. 2-the 2nd, the fundamental diagram of the all-purpose sealed device of 4 lobe formula lower resistance of this utility model of Fig. 2-1.

Among this figure, the dynamic bindiny mechanism (112) of last guiding mechanism (1) realizes through the elasticity areas of weak intensity upper end that is arranged on guiding mechanism (1), that form through groove (1121).Because groove (1121) has formed the elasticity areas of weak intensity, and is lower in the strength ratio at this place, easy deformation.After inserting operating theater instruments (8), groove (1121) is located distortion, drives top shoe (11), sliding block (22) and sealing ring (3) and outwards opens, and makes things convenient for the entering of operating theater instruments (8).When withdrawing from operating theater instruments (8); Sliding block (22) on the lower guide mechanism (2) plays guide effect; Let operating theater instruments conveniently withdraw from, and under the effect of the elastic restoring force of 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, the initial position when simultaneously top shoe (11) and sliding block (22) also return to no operating theater instruments insertion.

Fig. 2-the 3rd, the side view of Fig. 2-1.

Fig. 2-the 4th, the perspective view of the last guiding mechanism of part on Fig. 2-3.

Fig. 2-the 5th, the perspective view of the lower guide mechanism of part under Fig. 2-3.

Fig. 2-the 6th comprises the structural representation of perforator of the all-purpose sealed device of lower resistance of this utility model.

Fig. 2-the 7th, the explosive view of Fig. 2-3.

Fig. 2-7A shows through heat seal or binding agent bonding to go up the structural representation that is connected retaining mechanism that guiding mechanism and lower guide mechanism are connected and fixed.

Fig. 2-7B shows through the embossed card fit structure to go up the structural representation that is connected retaining mechanism that guiding mechanism and lower guide mechanism are connected and fixed.

Fig. 2-the 8th, the perspective view of the trapezoidal sealing ring that this utility model uses.

Fig. 2-the 9th, the structural representation of the cross section of the sealing ring of Fig. 2-8.

Fig. 2-the 10th, the perspective view of the nearly trapezoidal sealing ring that this utility model uses.

Fig. 2-the 11st, the structural representation of the cross section of the sealing ring of Fig. 2-10.

Fig. 3-the 1st adopts a structural representation of the all-purpose sealed device of lower resistance of this utility model of the dynamic bindiny mechanism that connects.

Fig. 3-the 2nd, the B-B cutaway view of Fig. 3-1.

D in this figure ₃₁Be the diameter of sealing ring operating theater instruments through hole, D ₁₂Be that diameter is the circular arc position of 12mm, after L-SH is illustrated in the operating theater instruments of inserting 12mm, the length of " soft-hard " friction zone that forms between silica gel sealing ring and the 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 plastics of last spigot surface (111) and the metal epitheca of operating theater instruments.The difference of the embodiment that present embodiment and Fig. 2-1 to 2-7 shows is: dynamic bindiny mechanism (112) has adopted the spacing rotating mechanism of axle shape in the present embodiment; Turning cylinder (1122) is arranged on the upper end of guiding mechanism (1); Constitute the spacing rotating mechanism of axle with the axle locating slot (1124) on the locating piece (52) of perforator, as dynamic bindiny mechanism (4).

Fig. 3-the 3rd, the perspective view of the lower guide mechanism of part under Fig. 3-1.

Fig. 3-the 4th, the perspective view of the last guiding mechanism of part on Fig. 3-1.

Fig. 3-the 5th, the explosive view of Fig. 3-1.

Fig. 3-the 6th, the structural representation of the all-purpose sealed device of lower resistance of this utility model of the dynamic bindiny mechanism that the employing ball connects.

In this figure; The difference of the dynamic bindiny mechanism that is connected with axle that Fig. 3-1 shows to Fig. 3-5 is: turning cylinder (1122) is changed into rotary ball (1123), and a locating slot (1124) that is complementary with turning cylinder (1122) has also made the spherical locating slot (1125) that matches into.Ball (1123) has constituted spherical spacing rotating mechanism with spherical locating slot (1125), as dynamic bindiny mechanism (4).

Fig. 4-the 1st, the structural representation of the sealing device of this utility model of the connection retaining mechanism that the employing embossed card cooperates.

Fig. 4-the 2nd, the C-C cutaway view of Fig. 4-1.

Among this figure, be to the difference of Fig. 2-7 with Fig. 2-1: being connected between the top shoe (11) of going up guiding mechanism (1) and the sliding block (21) of lower guide mechanism (2) fixedly is that the connection retaining mechanism (4) through the embossed card cooperation is locked.Protruding pinning (41) directly and sliding block (21) be manufactured on the parts; Equally, recessed locked groove (42) also is molded directly within the bottom of top shoe (11).

Fig. 4-the 3rd, the perspective view of the last guiding mechanism of part on Fig. 4-1.

Fig. 4-the 4th, the perspective view of the lower guide mechanism of part under Fig. 4-1.

Fig. 5-the 1st, the structural representation of the all-purpose sealed device of lower resistance that is provided with side shield of this utility model.

Fig. 5-the 2nd, the D-D cutaway view of Fig. 5-1.

Among this figure, be to the difference of Fig. 2-7: increase in the outside of the top shoe (11) of last guiding mechanism (1) and be provided with side shield (113) with Fig. 2-1.Setting up the purpose of side shield (113), is the rigidity that improves top shoe (11) on the one hand, is the support force that increases the hypotenuse (32) of sealing ring on the other hand.

Fig. 5-the 3rd, the perspective view of the last guiding mechanism of part on Fig. 5-1.

Fig. 5-the 4th, the perspective view of the lower guide mechanism of part under Fig. 5-1.

Fig. 6-the 1st, sealing ring hypotenuse are provided with the structural representation of the sealing device of this utility model that connects retaining mechanism.

Fig. 6-the 2nd, the E-E cutaway view of Fig. 6-1.

Among this figure, be to the difference of Fig. 5-4: increase in the outside of the top shoe (11) of last guiding mechanism (1) and be provided with side shield (113) with Fig. 5-1.The purpose that has additional side shield (113) is to improve the rigidity of top shoe (11) on the one hand, is the support force that increases the hypotenuse (32) of sealing ring on the other hand.Side shield (113) is locked at the side and the sliding block (21) of sealing ring hypotenuse (32) through connecting retaining mechanism (4).The connection retaining mechanism (4) here is fixed on sealing ring hypotenuse (32) compression between side shield (113) and the sliding block (21) through the embossed card fit structure.Connect retaining mechanism (4) when being locked between top shoe (11) and the sliding block (21), make sealing ring (3) that certain compress variation arranged, be in order to prevent leakage, and influence sealing effectiveness at this place's generation gas.

Fig. 6-the 3rd, the perspective view of the last guiding mechanism of part on Fig. 6-1.

Fig. 6-the 4th, the perspective view of the lower guide mechanism of part under Fig. 6-1.

Fig. 7-the 1st, the structural representation of the all-purpose sealed device of 3 lobe formula lower resistance of this utility model.

Fig. 7-the 2nd, the F-F cutaway view of Fig. 7-1.

This figure and Fig. 2-1 are to the difference of the embodiment that 2-7 shows: guiding mechanism (1) is provided with 3 top shoes (11) among this figure; And lower guide mechanism (2) also is provided with 3 sliding blocks (21); Top shoe (11) is corresponding one by one with sliding block (21), has formed 3 lobe formula structures.When inserting operating theater instruments, top shoe (11), sliding block (21) and sealing ring (3) outwards open, and the gap (23) between the gap between the top shoe (13) and the sliding block progressively enlarges.When withdrawing from operating theater instruments; Under the effect of the elastic restoring force of sealing ring (3); Top shoe (11) entad shrinks with sliding block (21); Gap (23) between gap between the top shoe (13) and the sliding block progressively reduces, and top shoe (11) and sliding block (21) return to initial position, and the operating theater instruments through hole (31) of sealing ring (3) also returns to original diameter.

Fig. 7-the 3rd, the perspective view of the last guiding mechanism of part on Fig. 7-1.

Fig. 7-the 4th, the perspective view of the lower guide mechanism of part under Fig. 7-1.

Fig. 8-the 1st, the structural representation of the all-purpose sealed device of 2 lobe formula lower resistance of this utility model.

Fig. 8-the 2nd, the J-J cutaway view of Fig. 8-1.

This figure and Fig. 7-1 are to the difference of the embodiment that 7-4 shows: among this figure; Last guiding mechanism (1) is provided with 2 top shoes (11); And lower guide mechanism (2) also is provided with 2 sliding blocks (21), and top shoe (11) is corresponding one by one with sliding block (21), has formed 2 lobe formula structures.

Fig. 8-the 3rd, the perspective view of the last guiding mechanism of part on Fig. 8-1.

Fig. 8-the 4th, the perspective view of the lower guide mechanism of part under Fig. 8-1.

Fig. 9-the 1st, the structural representation of the all-purpose sealed device of 2 lobe formula lower resistance of this utility model.

Fig. 9-the 2nd, the K-K cutaway view of Fig. 9-1.

Among this figure, the difference of the embodiment that shows to 8-4 with Fig. 8-1 is: the cross section of the sealing ring (3) of the embodiment that Fig. 8-1 shows to 8-4 is trapezoidal.And the cross section of sealing ring (3) is the V font in the present embodiment.The top shoe (11) of the embodiment that Fig. 8-1 shows to 8-4 and sliding block (21) are that the be connected retaining mechanism (4) of bottom (34) through the embossed card fit structure at trapezoidal sealing ring is locked, and sealing ring (3) is between top shoe (11) and sliding block (21).And in the present embodiment, top shoe (11) and sliding block (21) be the hypotenuse (32) of V font sealing ring go up through the embossed card fit structure be connected retaining mechanism (4) fixing and locking, sealing ring (3) is between top shoe (11) and sliding block (21).But, in these two embodiment, all form rounding off between top shoe (11) and the sliding block (21), accompany the very thin sealing ring of one deck (3) therebetween.

Fig. 9-the 3rd, the perspective view of the last guiding mechanism of part on Fig. 9-1.

Fig. 9-the 4th, the perspective view of the lower guide mechanism of part under Fig. 9-1.

Figure 10-the 1st, the structural representation of the all-purpose sealed device of 4 lobe formula lower resistance of this utility model of nearly H font sealing ring.

Figure 10-the 2nd, the M-M cutaway view of Fig. 9-1.

Among this figure, the difference of the embodiment that shows to 2-7 with Fig. 2-1 is: the cross section of the sealing ring (3) of the embodiment that Fig. 2-1 shows to 2-7 is trapezoidal, and the cross section of sealing ring (3) is nearly H font in the present embodiment.

H font sealing ring or nearly its characteristics of H font sealing ring are that its top is trapezoidal sealing ring, and many one is fallen funnel shaped sealing ring in its underpart, links to each other with the bottom of trapezoidal sealing ring.The hypotenuse of the sealing ring of falling the infundibulate can increase the elastic restoring force after the silica gel sealing ring distortion, increases the ability that top shoe (11) and sliding block (21) return to initial position.

Figure 10-the 3rd, the perspective view of the last guiding mechanism of part on Fig. 9-1.

Figure 10-the 4th, the perspective view of the lower guide mechanism of part under Fig. 9-1.

Figure 11-the 1st is provided with the structural representation of the all-purpose sealed device of 4 lobe formula lower resistance of this utility model of buffering ring and towing plate.

Figure 11-the 2nd, the N-N cutaway view of Figure 11-1.

Among this figure, be provided with towing plate (212) in the lower end of the sliding block (21) of lower guide mechanism, towing plate (212) adopts the manufacturing of elasticity medical macromolecular materials, is selected from flexible medical materials such as medical silica-gel, medical grade rubber, medical polyurethane, medical latex.Towing plate (212) is through the bottom of embossed card matching and fixing in sliding block (21).

Towing plate (212) has draw to sliding block (21) in operating theater instruments (8) when withdrawing from, and its elastic restoring force also helps sliding block (21) resetting after operating theater instruments (8) withdraws from fully; Towing plate (212) softness does not influence the outside open motion of sliding block (21) when operating theater instruments (8) is inserted simultaneously.

In this figure, also be provided with undaform buffering ring (35) at the edge of sealing ring (3), buffering ring (35) is used for guiding mechanism (1) and lower guide mechanism (2) when occurred level moves, and cushions and seals.The dynamic bindiny mechanism (112) of the top shoe (11) of last guiding mechanism (1) locks device through card and locating piece (52) is fixed together.In the present embodiment; Last guide pad (11), following guide pad (21) and sealing ring (3) are when operating theater instruments (8) is inserted; Can collaborative outwards open, when operating theater instruments (8) when withdrawing from, under the effect of the elastic restoring force of sealing ring (3); Last guide pad (11), following guide pad (21) and sealing ring (3) can entad shrink, and return to initial position.In addition; Because dynamic linkage structure (112) is fixed together with locating piece (52); Therebetween, the compression of silica gel sealing ring upper end is fixed between dynamic linkage structure (112) and the locating piece (52), because of the upper end-face edge at sealing ring (3) is provided with buffering ring (35); Above guiding mechanism (1), lower guide mechanism (2) can carry out the two-dimension translational motion by along continuous straight runs together with the operating theater instruments through hole (31) of sealing ring (3), satisfy the different motion requirements of operation technique.

Figure 11-the 3rd, the perspective view of the last guiding mechanism of part on Figure 11-1.

Figure 11-the 4th, the perspective view of the lower guide mechanism of part under Figure 11-1.

Figure 12-the 1st, the structural representation of the perforator of this utility model of the dynamic bindiny mechanism of concave groove type.

Figure 12-the 2nd, the structural representation of the sheath pipe of the perforator of Figure 12-1.

Figure 12-the 3rd, the perforator of Figure 12-1 inserts the fundamental diagram after the operating theater instruments.

Figure 13-the 1st, the structural representation of the perforator of this utility model of turning cylinder kenel bindiny mechanism.

Figure 13-the 2nd, the perforator of Figure 13-1 inserts the fundamental diagram after the operating theater instruments.

Among the above-mentioned figure:

1 is that last guiding mechanism, 2 is that lower guide mechanism, 3 is that sealing ring, 4 is the connection retaining mechanism, and 5 is the perforator of this utility model, and 6 is puncturing lever, and 7 is the sealing device of this utility model, and 8 is operating theater instruments, and 9 is check valve or axial sealer.

11 is that the top shoe, 12 of last guiding mechanism is the through hole of last guiding mechanism lower end, and 13 is the gap between the top shoe, 14 through holes that are provided with for degree of falling intensity; Spigot surface on 111 top shoes, 112 is the dynamic bindiny mechanism on the top shoe, 113 is the side shield of top shoe; 115 take as the leading factor to slide block, and 116 is secondary guide runner.

1121 is groove or the dynamic bindiny mechanism of elasticity areas of weak intensity formula, and 1122 is the dynamic bindiny mechanism of turning cylinder interconnection system, and 1123 are the dynamic bindiny mechanism of roating sphere interconnection system, and 1124 is the axle stopper slot, and 1125 is the ball stopper slot.

21 is the sliding block of lower guide mechanism, and 22 is lower guide mechanism upper end through hole, and 23 is the gap between the sliding block; 211 is the spigot surface of sliding block, and 212 is towing plate; 2121 is the through hole on the towing plate.

31 is the operating theater instruments through hole of sealing ring, and 32 is the hypotenuse of sealing ring, and 33 is to let on the sealing ring connect the through hole that retaining mechanism passes through, and 34 is the bottom of trapezoidal sealing ring, and 35 is buffering ring.

41 for connecting the pinning of retaining mechanism, and 42 for connecting the locked groove of retaining mechanism, and 43 for connecting the locating slot of retaining mechanism.

51 is the housing of perforator, and 52 is locating piece.

D ₁₂For diameter is the circular arc position of 12mm, D ₃₁Be the diameter of sealing ring operating theater instruments through hole, D ₃₄Diameter for the bottom of trapezoidal sealing ring.

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.

β is the angle between the central shaft of funnel-shaped structure of last spigot surface and last guiding mechanism of last guiding mechanism.

The specific embodiment

Embodiment 1: the all-purpose sealed device of 4 lobe formula lower resistance of this utility model

With reference to the technical scheme of figure 2-1 to Fig. 2-11, design concrete detail drawing according to this utility model.

Top shoe (11), sliding block (21) and be connected retaining mechanism (4) and adopt the medical macromolecular materials manufacturing, material is selected from: include but not limited to medical plastics such as medical PP, medical PE, medical PU, medical PA, medical PC.Wherein, the spigot surface (211) of spigot surface of top shoe (111) and sliding block can 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, sealing ring (3) is placed between guiding mechanism (1) and the lower guide mechanism (2), top shoe (11) is connected and fixed through being connected retaining mechanism (4) with sliding block (21).The edge of the operating theater instruments through hole (31) of sealing ring is fixed between top shoe (11) and the sliding block (21), makes between top shoe (11) and the sliding block (21) and forms rounding off, accompanies the very thin sealing ring of one deck (3) therebetween.

Because sealing ring (3) is compressed between guiding mechanism (1) and the lower guide mechanism (2),, reduced the contact area of sealing ring (3) to greatest extent with operating theater instruments through the rounding off between last guiding mechanism (1) and the lower guide mechanism (2).The sealing device of this utility model makes after the operating theater instruments of inserting 12mm; Length L-the SH of " soft-firmly " friction zone that forms between " soft-hard " length L-SH of friction zone that forms between the metal epitheca of silica gel sealing ring (3) and operating theater instruments (8) and the general silica gel sealing ring of traditional infundibulate and the operating theater instruments compares; Shortened significantly, thereby reduced the frictional resistance when operating theater instruments is moved.

Almost the thickness δ with sealing ring (3) bottom is suitable after operating theater instruments is inserted for the length L-SH of " soft-hard " friction zone of the sealing device of this utility model, increases significantly unlike the length L-SH of the general silica gel sealing ring of infundibulate " soft-hard " friction zone after inserting operating theater instruments of prior art.The sealing device of this utility model has just increased the length L-HH of " hard-hard " friction zone, and the length L-HH of employing " hard-hard " friction zone substitutes the length L-SH of " soft-hard " friction zone, the resistance of motion when fundamentally having reduced the operating theater instruments reciprocating motion.

The sealing device of this utility model not only has guide function when apparatus gets into or withdraws from, be fit to different shape operating theater instruments insertion and withdraw from; And, be converted into " hard-hard " friction zone between upper and lower spigot surface and the apparatus to greatest extent with " soft-hard " friction zone between sealing ring (3) and the operating theater instruments, significantly reduced the resistance of motion of operating theater instruments in sealing device and perforator.Simultaneously, sealing device of this utility model and perforator can use the apparatus of any diameter between 5mm～12mm, realize its versatility; Good sealing effect not only, and the resistance of motion is low.

In addition, the lower guide 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 the 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 is any operating theater instruments between 5mm～12mm, and keeps 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.

Go up guiding mechanism (1) in the present embodiment and be provided with 4 top shoes (11), and lower guide mechanism (2) also is provided with 4 sliding blocks (21), top shoe (11) is corresponding one by one with sliding block (21), has formed 4 lobe formula structures.

When inserting operating theater instruments (8), top shoe (11), sliding block (21) and sealing ring (3) outwards open, and 4 gaps (13) progressively enlarge.Strain also takes place because of the insertion of operating theater instruments in the sealing ring (3) that is clipped between top shoe (11), the sliding block (21).

When withdrawing from operating theater instruments (8), under the effect of the elastic restoring force of sealing ring (3), top shoe (11) entad shrinks with sliding block (21), the recovery initial position.The operating theater instruments through hole (31) of sealing ring (3) also returns to initial diameter simultaneously.

The connection retaining mechanism (4) here is made up of pinning (41), locked groove (42) and locating slot (43); The through hole (33) that the locked groove (42) of sliding block (21) raising passes on the sealing ring gets in the locating slot (43) of top shoe (11); Pinning (41) passes locked groove (42) top shoe (11) and sliding block (21) is connected and fixed, and sealing ring (3) places between top shoe (11) and the sliding block (21).Form rounding off between top shoe (11) and the corresponding sliding block (21); The diameter of the operating theater instruments through hole (31) on the sealing ring is then less than the lower end through hole (12) of last guiding mechanism (1) and the upper end through hole (22) of lower guide mechanism.

Connection retaining mechanism (4) through the embossed card fit structure is fixed on sealing ring (3) compression between top shoe (11) and the sliding block (21).Connect retaining mechanism (4) when being locked between top shoe (11) and the sliding block (21), making sealing ring (3) that certain compress variation arranged is in order to prevent the leakage at this place's generation gas, and influences sealing effectiveness.

In the present embodiment, the dynamic bindiny mechanism (112) of last guiding mechanism (1) realizes through the elasticity areas of weak intensity that groove (1121) forms through the upper end at spigot surface (111).Because groove (1121) has formed the elasticity areas of weak intensity, lower in the strength ratio of this district's top shoe (11), easy deformation; After inserting operating theater instruments (8); Groove variations drives top shoe (11), sliding block (22) and sealing ring (3) and outwards opens, and makes things convenient for the entering of operating theater instruments.When withdrawing from operating theater instruments; Sliding block (22) on the lower guide mechanism (2) plays guide effect, lets operating theater instruments (8) conveniently withdraw from, and under the effect of the elastic restoring force of sealing ring (3); Return to the state that no apparatus inserts, promptly the operating theater instruments through hole (31) of sealing ring returns to initial diameter.

With reference to figure 2-7A, present embodiment is showed through heat seal or binding agent bonding will go up the basic structure that is connected retaining mechanism (4) that guiding mechanism (1) and lower guide mechanism (2) are connected and fixed.After the pinning of sliding block raising (41) passes the bottom (34) of silicone rubber O-ring (3); The groove (42) of guide pad bottom forms concavo-convex cooperation in the entering; Can adopt supersonic thermal setting technology at this place, top shoe (11) and sliding block (21) heat seal are fixed together.Another kind method is can use Chemical Felter changing concavo-convex cooperation place, and top shoe (11) and sliding block (21) are bonded and fixed at together.

With reference to figure 2-7B, present embodiment has been showed through the embossed card fit structure will go up the structure that is connected retaining mechanism (4) that guiding mechanism (1) and lower guide mechanism (2) are connected and fixed.Pinning (41) is fabricated directly on the sliding block (21); What match then is to be provided with locked groove (42) in the relevant position of top shoe (11); After pinning (41) being passed the bottom (34) of silicone rubber O-ring (3); The groove (42) of guide pad bottom forms the embossed card cooperation in the entering, just can top shoe (11) and sliding block (21) be connected and fixed.

Embodiment 2: adopt the be dynamically connected sealing device of this utility model of mechanism of axle interconnection system

With reference to figure 3-1 to Fig. 3-5; The know-why of present embodiment is with embodiment 1; Difference only is: in embodiment 1, what dynamically bindiny mechanism (112) adopted is the areas of weak intensity that groove forms, and in this embodiment; Dynamically bindiny mechanism (112) has adopted the dynamic connected mode of turning cylinder, and turning cylinder (1122) and the locating piece (52) of perforator are gone up the axle locating slot (1124) that is provided with and formed dynamic connection the between a locating slot and the rotating shaft.Concrete connected mode between rotating shaft and the axle locating slot has many kinds, and this professional engineer can design as the case may be.

In Fig. 3-6, showed the spacing rotating mechanism of a kind of sphere, as dynamic bindiny mechanism (112).In the present embodiment, turning cylinder (1122) is changed into rotary ball (1123), and the axle locating slot (1124) that is complementary with turning cylinder (1122) has also made the spherical locating slot (1125) that matches into.Ball (1123) has constituted spherical spacing rotating mechanism with spherical locating slot (1125), as dynamic bindiny mechanism (4).

Embodiment 3: adopt the be connected sealing device of this utility model of retaining mechanism of embossed card

With reference to figure 4-1 to Fig. 4-4; The know-why of present embodiment is with embodiment 1; Difference only is: the connection retaining mechanism (4) of this utility model is made up of the locked groove (42) on pinning on the sliding block (41) and the top shoe; Pinning (41) upwards inserts locked groove above the top shoe (42), can sealing ring (3) be compressed between top shoe (11) and the sliding block (21), forms rounding off between the upper and lower slide block.This pinning (41) is connected retaining mechanism (4) with the locking that the embossed card fit structure that locked groove (42) forms constitutes; Wherein pinning (41) can be injection molded into an integral body with sliding block (21); Same locked groove (42) also can be gone up through the injection moulding straight forming at top shoe (11), has made things convenient for manufacturing.

Embodiment 4: the sealing device that is provided with this utility model of side shield

With reference to figure 5-1 to Fig. 5-3, the know-why of present embodiment is with embodiment 1, and the difference of present embodiment and embodiment 1 is: increase in the outside of the top shoe (11) of last guiding mechanism (1) and be provided with side shield (113).The purpose of setting up side shield (113) is to improve the rigidity of top shoe (11) on the one hand, prevents the excessive deformation of top shoe (11) when operating theater instruments is inserted; Be the support force that increases sealing ring hypotenuse (32) on the other hand.

Embodiment 5: the sealing ring hypotenuse is provided with the sealing device of this utility model that connects retaining mechanism

With reference to figure 6-1 to Fig. 6-4, present embodiment and embodiment 4 are basic identical, and difference is: increase in the outside of the top shoe (11) of last guiding mechanism (1) and be provided with side shield (113).Setting up the purpose of side shield (113), is the rigidity that improves top shoe (11) on the one hand, is the support force that increases sealing ring hypotenuse (32) on the other hand.Side shield (113) is locked at the side and the sliding block (21) of sealing ring hypotenuse (32) through connecting retaining mechanism (4).The connection retaining mechanism (4) here is fixed on sealing ring hypotenuse (32) compression between side shield (113) and the sliding block (21) through the embossed card fit structure.Connect retaining mechanism (4) when being locked between top shoe (11) and the sliding block (21), making sealing ring (3) that certain compress variation arranged is in order to prevent the leakage at this place's generation gas, and influences sealing effectiveness.

Embodiment 6: the 3 lobe formula sealing devices of this utility model

With reference to figure 7-1 to 7-4; Present embodiment and embodiment 1 are basic identical, and its difference is: go up guiding mechanism (1) in the present embodiment and be provided with 3 top shoes (11), and lower guide mechanism (2) also is provided with 3 sliding blocks (21); Top shoe (11) is corresponding one by one with sliding block (21), has formed 3 lobe formula structures.

When inserting operating theater instruments (8), top shoe (11), sliding block (21) and sealing ring (3) outwards open, and 3 gaps (13) progressively enlarge, and in the gap, can see sealing ring (3).

When withdrawing from operating theater instruments (8); Under the effect of the elastic restoring force of sealing ring (3), top shoe (11) entad shrinks with sliding block (21), and gap (13) progressively reduce; Recover initial position, the operating theater instruments through hole (31) of sealing ring (3) also returns to initial diameter simultaneously.

Embodiment 7: the 2 lobe formula sealing devices of this utility model

With reference to figure 8-1 to Fig. 8-4; The difference of present embodiment and embodiment 6 is: go up guiding mechanism (1) in the present embodiment and be provided with 2 top shoes (11); And lower guide mechanism (2) also is provided with 2 sliding blocks (21), and top shoe (11) is corresponding one by one with sliding block (21), has formed 2 lobe formula structures.

The sealing device of this utility model of embodiment 8:2 lobe formula V font sealing ring

With reference to figure 9-1 to Fig. 9-4, present embodiment and embodiment 7 differences are: the cross section of the sealing ring (3) that uses among the embodiment 1 to embodiment 7 all is trapezoidal, and the cross section of sealing ring (3) is the V font in the present embodiment.

In embodiment 1 to embodiment 7, top shoe (11) and sliding block (21) be in the bottom of trapezoidal sealing ring (3) through the embossed card fit structure be connected retaining mechanism (4) fixing and locking, sealing ring (3) is between top shoe (11) and sliding block (21).And in the present embodiment, top shoe (11) and sliding block (21) be the hypotenuse (32) of V font sealing ring (3) go up through the embossed card fit structure be connected retaining mechanism (4) fixing and locking, sealing ring (3) is between top shoe (11) and sliding block (21).But, in these two embodiment, all be to form rounding off between top shoe (11) and the sliding block (21), accompany the very thin sealing ring of one deck (3) therebetween.

The 4 lobe formula sealing devices of this utility model of embodiment 9:H font sealing ring

With reference to figure 10-1 to Figure 10-4, the difference of present embodiment is: the cross section of the sealing ring (3) of the embodiment that embodiment 1 shows is trapezoidal, and the cross section of sealing ring (3) is nearly H font in the present embodiment.H font sealing ring or nearly its characteristics of H font sealing ring are that its top is trapezoidal sealing ring, and many one is fallen funnel shaped sealing ring in its underpart, links to each other with the bottom of trapezoidal sealing ring.The hypotenuse of the sealing ring of falling the infundibulate can increase the elastic restoring force after the silica gel sealing ring distortion, increases the ability that top shoe (11) and sliding block (21) return to initial position.

Embodiment 10: the 4 lobe formula sealing devices of this utility model that are provided with sealing ring and the towing plate of wave buffer structure

With reference to figure 11-1 to 11-4, the difference of present embodiment is: the sealing device of this utility model is provided with buffering ring (35), towing plate (212) and locating piece (52).Also be provided with gas via-hole (2121) on the towing plate (212).

In the present embodiment, be provided with towing plate (212) in the lower end of the sliding block (21) of lower guide mechanism, towing plate (212) adopts the manufacturing of elasticity medical macromolecular materials, is selected from flexible medical materials such as medical silica-gel, medical grade rubber, medical polyurethane, medical latex.Towing plate (212) is through the bottom of embossed card matching and fixing in sliding block (21).

In the present embodiment, also be provided with undaform buffering ring (35) at the edge of sealing ring (3), buffering ring (35) is used for guiding mechanism (1) and lower guide mechanism (2) when occurred level moves, and cushions and seals.The dynamic bindiny mechanism (112) of the top shoe (11) of last guiding mechanism (1) locks device through card and locating piece (52) is fixed together.In the present embodiment; Last guide pad (11), following guide pad (21) and sealing ring (3) are when operating theater instruments (8) is inserted; Can collaborative outwards open, when operating theater instruments (8) when withdrawing from, under the effect of the elastic restoring force of sealing ring (3); Last guide pad (11), following guide pad (21) and sealing ring (3) can entad shrink, and return to initial position.In addition; Because dynamic linkage structure (112) is fixed together with locating piece (52); Therebetween, the compression of silica gel sealing ring upper end is fixed between dynamic linkage structure (112) and the locating piece (52), because of the upper end-face edge at sealing ring (3) is provided with buffering ring (35); Above guiding mechanism (1), lower guide mechanism (2) can carry out the two-dimension translational motion by along continuous straight runs together with the operating theater instruments through hole (31) of sealing ring (3), satisfy the different motion requirements of operation technique.

Embodiment 11: the perforator of this utility model of the dynamic bindiny mechanism of concave groove type

With reference to figure 12-1 to Figure 12-3, in the present embodiment, the all-purpose sealed device of the dynamic bindiny mechanism of the concave groove type of this utility model lower resistance has been adopted in radial seal, and in axial seal, promptly check valve (9) has then adopted silicone rubber in-line sealing ring.

Because groove (1121) has formed the elasticity areas of weak intensity, and is lower in the strength ratio at this place, easy strain.

After inserting operating theater instruments (8), groove (1121) is located distortion, drives top shoe (11), sliding block (22) and sealing ring (3) and outwards opens, and makes things convenient for the entering of operating theater instruments (8).Simultaneously, the yi word pattern otch of in-line silica gel sealing ring is backed down by operating theater instruments, and operating theater instruments can get in the body cavity.

When withdrawing from operating theater instruments (8); Sliding block (22) on the lower guide mechanism (2) plays guide effect; Let operating theater instruments conveniently withdraw from, and under the effect of the elastic restoring force of 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, the initial position when simultaneously top shoe (11) and sliding block (22) also return to no operating theater instruments insertion.Simultaneously, the otch of in-line sealing ring is auto-closing under the effect of silica gel elastic restoring force, plays the axial seal effect, prevents CO ₂The leakage of gas.

Embodiment 12: the perforator of this utility model of turning cylinder kenel bindiny mechanism

With reference to figure 13-1 to Figure 13-2; The difference of present embodiment and embodiment 11 is: dynamic bindiny mechanism (112) has adopted the spacing rotating mechanism of axle shape in the present embodiment; Turning cylinder (1122) is arranged on the upper end of guiding mechanism (1); Constitute the spacing rotating mechanism of axle with the axle locating slot (1124) on the locating piece (52) of perforator, as dynamic bindiny mechanism (4).

After inserting operating theater instruments (8), turning cylinder (1122) rotates, and drives top shoe (11), sliding block (22) and sealing ring (3) and outwards opens, and makes things convenient for the entering of operating theater instruments (8).Simultaneously, the yi word pattern otch of in-line silica gel sealing ring is backed down by operating theater instruments, and operating theater instruments can get in the body cavity.

In addition, the radial direction seal ring of the perforator of this utility model can adopt the all-purpose sealed device of lower resistance (7) of this utility model; And check valve (9) or title axial sealer then adopt 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; Guiding mechanism (1) gets on operating theater instruments (8) edge; Top shoe (11) outwards opens, and the gap (13) between the top shoe (11) progressively enlarges, and 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 get in the body cavity.

When withdrawing from operating theater instruments; Operating theater instruments (8) progressively withdraws from along lower guide mechanism (2); Sliding block (21) progressively entad shrinks under the effect of the elastic restoring force of sealing ring (3), and gap (13) progressively dwindle; When apparatus 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 perforator of this utility model can also select for use spherical sealing device as check valve (9), and the all-purpose sealed device of the lower resistance of this utility model is installed in the sheath pipe of perforator as apex combustion seal (7).

It is to be noted; Can Magnet be installed in the last guiding mechanism (1) of 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; Guiding mechanism (1) gets on operating theater instruments (8) edge; Top shoe (11) outwards opens, and the gap (13) between the top shoe (11) progressively enlarges, and 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 get in the body cavity.

When withdrawing from operating theater instruments; Operating theater instruments (8) progressively withdraws from along lower guide mechanism (2); Sliding block (21) progressively entad shrinks under the effect of the elastic restoring force of sealing ring (3), and gap (13) progressively dwindle; When apparatus 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, like 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 open structure with explanation can use the identical structure of other effect to replace among this paper, the embodiment that while this utility model is introduced not is the unique structure that realizes this utility model.Though the preferential embodiment of this utility model introduces in this article and explains; 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, and therefore, the protection domain that should limit this utility model according to the spirit and the scope of this utility model appending claims.

Claims

1. the all-purpose sealed device of lower resistance that is used for perforator is characterized in that said sealing device is provided with guiding mechanism (1), lower guide mechanism (2), sealing ring (3) and is connected retaining mechanism (4);

Connecting retaining mechanism (4) is concavo-convex fit structure;

2. according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 1, it is characterized in that said connection retaining mechanism (4) will be gone up guiding mechanism (1) through the embossed card matching mechanism and lower guide mechanism (2) is connected and fixed; Perhaps, connect that retaining mechanism (4) adopts heat seal through concavo-convex fit structure or solder technology will go up guiding mechanism (1) and lower guide mechanism (2) is connected and fixed; Perhaps, connecting retaining mechanism (4) adopts Chemical Felter will go up guiding mechanism (1) through concavo-convex fit structure and lower guide mechanism (2) is connected and fixed.

3. according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 1, it is characterized in that the said guiding mechanism (1) of going up is provided with dynamic bindiny mechanism (112).

4. according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 3, it is characterized in that said dynamic bindiny mechanism (112) is meant the low-intensity district that deforms easily under external force, after distortion external force is removed, can recover shape again that groove or elastomeric material form; Perhaps, dynamically bindiny mechanism (112) is meant the spherical or spacing rotating mechanism of axle shape that can move.

5. according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 1, the upper end diameter of forming between the diameter of the lower end through hole (12) of the funnel-shaped structure that the upper end is big, the lower end is little that it is characterized in that forming between the said top shoe (11) and the sliding block (21) of the upper end through hole (22) of funnel-shaped structure little, that the lower end is big is close or equates.

6. according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 1, it is characterized in that the 4 lobe formula funnel-shaped structures that the upper end is big, the lower end is little that the said preferred construction that goes up guiding mechanism (1) is made up of 4 top shoes (11);

The preferred construction of lower guide mechanism (2) is fallen funnel-shaped structure by the 4 lobe formulas that the upper end that 4 sliding blocks (21) that are complementary with top shoe (11) are formed is little, the lower end is big.

7. according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 6; It is characterized in that in the top shoe (11) of guiding mechanism (1) on said 4 compositions; Form a pair of leading to slide block (115) by the bigger top shoe of the area of 2 spigot surfaces (11); The less top shoe (11) of the area of remaining 2 spigot surface forms a pair of secondary guide runner (116), the leading various colors that has to slide block (115) and secondary guide runner (116).

8. according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 1, it is characterized in that said sealing ring (3) is that cross section is the sealing ring of trapezoidal, closely trapezoidal, V font, nearly H font, be good wherein with trapezoidal or near trapezoidal sealing ring.

9. the said according to Claim 8 all-purpose sealed device of lower resistance that is used for perforator is characterized in that said sealing ring (3) is a cross section when being trapezoidal or near trapezoid sealing ring, the diameter D of its operating theater instruments through hole (31) 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～1.5mm.

10. according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 9, it is characterized in that said sealing ring (3) is a cross section when being trapezoidal or near trapezoid sealing ring, the diameter D of its operating theater instruments through hole (31) 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～0.9mm.

11. according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 9, the wall thickness that it is characterized in that said sealing ring (3) is non-equal thickness.

12. according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 1, the angle β of central shaft that it is characterized in that the said spigot surface (111) of going up guiding mechanism (1) and funnel-shaped structure is between 80 °～10 °.

13. according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 12, the angle β of central shaft that it is characterized in that the said spigot surface (111) of going up guiding mechanism (1) and funnel-shaped structure is between 50 °～15 °.

14. according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 1, what it is characterized in that said sealing ring (3) is provided with buffering ring (35), buffering ring (35) is a ripple struction.

15., it is characterized in that said guiding mechanism (1) is fixed on sealing ring (3) through concaveconvex structure the top of going up according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 1.

16., it is characterized in that said sealing device is provided with the locating piece (52) that is used for fixing sealing ring (3) and/or goes up the dynamic bindiny mechanism (112) of guiding mechanism according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 1.

17., it is characterized in that said sealing ring (3) adopts the manufacturing of elasticity medical macromolecular materials according to the said all-purpose sealed device of lower resistance that is used for perforator of claim 1.

18. perforator is characterized in that comprising the said all-purpose sealed device of lower resistance (7) that is used for perforator of claim 1.

19. according to the said perforator of claim 18, the all-purpose sealed device of lower resistance (7) that it is characterized in that said perforator is installed in the sheath pipe (5) of perforator through dynamic bindiny mechanism (112) housing (51) go up or locating piece (52) on.

20. according to the said perforator of claim 18, it is characterized in that the all-purpose sealed device of the said lower resistance of claim 1 (7) is adopted in the radial seal of said perforator, infundibulate one word sealing ring is adopted in axial seal.

21. according to the said perforator of claim 18, it is characterized in that the all-purpose sealed device of the said lower resistance of claim 1 (7) is adopted in the radial seal of said perforator, the flip-shell sealing device is adopted in axial seal.

22. according to the said perforator of claim 18, it is characterized in that the all-purpose sealed device of the said lower resistance of claim 1 (7) is adopted in the radial seal of said perforator, spherical sealing device is adopted in axial seal.