CN104800954A - Valve-adjustable catheter sheath - Google Patents
Valve-adjustable catheter sheath Download PDFInfo
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- CN104800954A CN104800954A CN201510258854.4A CN201510258854A CN104800954A CN 104800954 A CN104800954 A CN 104800954A CN 201510258854 A CN201510258854 A CN 201510258854A CN 104800954 A CN104800954 A CN 104800954A
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Abstract
The invention discloses a valve-adjustable catheter sheath. The valve-adjustable catheter sheath mainly consists of a sheath tube and a dilator, wherein a fastener, a first hemostatic valve, a second hemostatic valve and a gland cap are arranged at a near-end connector of the sheath tube; through slot matching of the fastener and the gland cap, the compression amount of the second hemostatic valve is controlled so as to change the size of an opening and achieve good sealing and pushing performance; the hemostatic valve adopts a double-sheet structure, when a catheter or an instrument passes through, a second hemostatic valve ensures hemostatic performance, and the catheter or the instrument withdraws, the first hemostatic valve ensures that blood does not lose; the matching of the gland cap and the fastener can control the size of the opening of the second hemostatic valve, so that when the catheters or the instruments with different pipe diameter specifications pass through, good sealing performance can be ensured, the resistance is very small, and very good operating hand feel is ensured; the first hemostatic valve and the second hemostatic valve are made of materials with different hardness and elasticity; the first hemostatic valve has relatively large elasticity modulus, the second hemostatic valve is relatively soft, and the size of the opening of the second hemostatic valve can be effectively controlled in a compressed state.
Description
Technical field
The present invention relates to adjustable valve catheter sheath, in interventional programs, particularly a kind of for invasive diagnosis in Angiocardiography or percutaneous transluminal coronary angioplasty or other peripheral blood vessels and treatment assistive device.
Background technology
As the supplemental pilot apparatus of arteriovenous intervene operation, catheter sheath plays an important role in interventional therapy.Catheter sheath is by vascular puncture technology, puncture seal wire guide catheter sheath skin expansion muscular tissue is used to enter superficial vessels inner chamber, then puncture seal wire and convergent divergent channel assembly is taken out, catheter sheath far-end is made to be placed in Ink vessel transfusing, so just establish one by the external passage to intravascular space, can be used for other apparatuses or medicine intravasation or carry out hemodynamic monitoring etc.
In intervene operation, use catheter sheath effectively can reduce the damage to blood vessel, prevents loss of blood.Therefore the major requirement for haemostatic valve is as follows: first, apparatus or catheter insertion sheath pipe or when extracting out, all can carry out effective sealing; Secondly, haemostatic valve should be as far as possible little to the frictional resistance that apparatus or conduit turnover sheath pipe produce, otherwise will have a strong impact on its handling, reduces the operating handle of doctor.Particularly in aneurysm of thoracic aorta and abdominal aortic aneurysm stent-assisted angioplasty operation process, catheter sheath needs the smooth and easy dilator by large gauge and induction system, also needs to carry out Ink vessel transfusing radiography by angiography catheter simultaneously; Good operating handle and anthemorrhagic performance are all needed for the two.The actual effect of existing structure is not very desirable.
Summary of the invention
In view of this, the invention provides a kind of adjustable valve catheter sheath, the openings of sizes of haemostatic valve in joint can be controlled, thus realize excellent anthemorrhagic performance, and good sealing and push performance.
For achieving the above object, the invention provides following technical scheme:
A kind of adjustable valve catheter sheath, its sheath pipe proximal joint place is provided with haemostatic valve, and for compressing the opening adjusting mechanism of described haemostatic valve.
Preferably, described opening adjusting mechanism can compress described haemostatic valve vertically and makes its openings get smaller.
Preferably, described haemostatic valve is arranged in the proximal end bore of adapter body;
Described opening adjusting mechanism comprises the first adjustment part and the second adjustment part, described first adjustment part is fixedly connected on described adapter body, described second adjustment part distally can move vertically under the guide effect of described first adjustment part, and described second adjustment part has the planar annular for compressing described haemostatic valve vertically.
Preferably, in described opening adjusting mechanism, be provided with locking structure, after described second adjustment part can be made distally to move vertically, keep relative fixing with described first adjustment part.
Preferably, described first adjustment part is fastener, and described second adjustment part is gland cap, and described locking structure comprises the compression back-off be arranged on fastener, and is arranged on the compression draw-in groove for coordinating with described compression back-off on described gland cap relevant position.
Preferably, described fastener is also provided with described button domes, described back-off is arranged on described button domes.
Preferably, described first adjustment part and described second adjustment part threaded engagement form described locking structure.
Preferably, described opening adjusting mechanism radially can compress described haemostatic valve and makes its openings get smaller.
Preferably, described haemostatic valve comprises and is coaxially arranged on the first haemostatic valve in adapter body proximal end bore and the second haemostatic valve, and described second haemostatic valve is positioned at the near-end side of described first haemostatic valve, the opening size of described second haemostatic valve is greater than the opening size of described first haemostatic valve, and the elastic modelling quantity of described first haemostatic valve is greater than the elastic modelling quantity of described second haemostatic valve.
Preferably, described first haemostatic valve adopts slot cut, and described second haemostatic valve adopts circular incision.
As can be seen from above-mentioned technical scheme, adjustable valve catheter sheath provided by the invention, can act on haemostatic valve by opening adjusting mechanism in use and make it that deformation occur, thus realizes the openings of sizes of adjustment haemostatic valve; So, catheter sheath all can keep good anthemorrhagic performance when inserting large gauge conduit and inserting small dimension conduit, and good sealing and propelling movement performance.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the adjustable valve catheter sheath that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the assembling schematic diagram of the adjustable valve catheter sheath sheath pipe of the embodiment of the present invention;
Fig. 3 is the assembling schematic diagram of the adjustable valve catheter sheath dilator of the embodiment of the present invention;
Fig. 4 is the structural representation of the fastener of the embodiment of the present invention;
Fig. 5 is the structural representation of the gland cap of the embodiment of the present invention;
Fig. 6 is the sectional structure schematic diagram of the adjustable valve catheter sheath normality of the embodiment of the present invention;
Fig. 7 is the sectional structure schematic diagram of the adjustable valve catheter sheath squeezed state of the embodiment of the present invention;
Fig. 8 is the normality schematic diagram of the rotary structure of the embodiment of the present invention;
Fig. 9 is the squeezed state schematic diagram of the rotary structure of the embodiment of the present invention.
Wherein, 1 is that convergent divergent channel is most advanced and sophisticated; 2 is sheath pipe body; 3 is mark pipe cap; 4 is gland cap; 5 is convergent divergent channel joint; 6 is fastener; 7 is side pipe; 8 is three-way cock; 9 is rotary valve; 10 is threeway seat; 11 for sewing up eye; 12 is adapter body; 13 is the first haemostatic valve; 14 is the second haemostatic valve; 15 is side pipe junction; 16 is sheath tip end; 17 is button domes; 18 is compression back-off; 19 is compression draw-in groove; 20 is assembling buckle.
Detailed description of the invention
The invention discloses a kind of adjustable valve catheter sheath, the openings of sizes of haemostatic valve in joint can be controlled, thus realize excellent anthemorrhagic performance, and good sealing and push performance.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 9, the structural representation of the adjustable valve catheter sheath that Fig. 1 wherein provides for the embodiment of the present invention; Fig. 2 is the assembling schematic diagram of the adjustable valve catheter sheath sheath pipe of the embodiment of the present invention; Fig. 3 is the assembling schematic diagram of the adjustable valve catheter sheath dilator of the embodiment of the present invention; Fig. 4 is the structural representation of the fastener of the embodiment of the present invention; Fig. 5 is the structural representation of the gland cap of the embodiment of the present invention; Fig. 6 is the sectional structure schematic diagram of the adjustable valve catheter sheath normality of the embodiment of the present invention; Fig. 7 is the sectional structure schematic diagram of the adjustable valve catheter sheath squeezed state of the embodiment of the present invention; Fig. 8 is the normality schematic diagram of the rotary structure of the embodiment of the present invention; Fig. 9 is the squeezed state schematic diagram of the rotary structure of the embodiment of the present invention.
The adjustable valve catheter sheath that the embodiment of the present invention provides, its core improvement is, its sheath pipe proximal joint place is provided with haemostatic valve, and for the opening adjusting mechanism of compressed tampon valve; The opening adjusting mechanism haemostatic valve that can act in haemostatic valve makes it that deformation occur, thus realizes the openings of sizes of adjustment haemostatic valve.
As can be seen from above-mentioned technical scheme, the adjustable valve catheter sheath that the embodiment of the present invention provides, can act on haemostatic valve by opening adjusting mechanism in use and make it that deformation occur, thus realizes the openings of sizes of adjustment haemostatic valve; So, catheter sheath all can keep good anthemorrhagic performance when inserting the conduit of different size or apparatus, and good sealing and propelling movement performance.
As preferably, the haemostatic valve that opening adjusting mechanism can compress column structure vertically makes its openings get smaller.Haemostatic valve is installed in hole, the internal diameter size in this hole and the outside dimension of haemostatic valve match, and namely the radial full-size of haemostatic valve is defined, when being subject to axial compression power, its material can only flow towards the opening part at center, then opening is diminished by compression.Be understandable that, here the axis of indication, i.e. the axis of catheter sheath, be also simultaneously apparatus or catheter insertion sheath pipe or extract out time the direction of motion, lower with.
In the specific embodiment that this programme provides, haemostatic valve is arranged in the proximal end bore of adapter body 12; It should be noted that, near-end is the using state based on adjustable valve catheter sheath, and namely this apparatus is near one end of user, the right-hand member namely in accompanying drawing, and accordingly, the one end away from user is far-end, lower same;
Opening adjusting mechanism comprises the first adjustment part and the second adjustment part, the first adjustment part is wherein fixedly connected on adapter body 12, second adjustment part distally can move (namely compress) vertically under the guide effect of the first adjustment part, and the second adjustment part has the planar annular for compressed tampon valve vertically.
In order to optimize above-mentioned technical scheme further, after the compression that the second adjustment part completes haemostatic valve, locking positioning being carried out to it, to keep above-mentioned decrement constant, being convenient to carry out follow-up apparatus or conduit inserts or unsheathes pipe.Then be provided with locking structure in opening adjusting mechanism, after the second adjustment part can be made distally to move vertically, keep relative fixing with the first adjustment part.
In a kind of specific embodiment that this programme provides, locking structure adopts click on fashion.As shown in Figure 4 and Figure 5, the first adjustment part is fastener 6, and the second adjustment part is gland cap 4, and locking structure comprises the compression back-off 18 be arranged on fastener 6, and is arranged on the compression draw-in groove 19 for coordinating with compression back-off 18 on gland cap 4 relevant position.Wherein compressing back-off 18 is one end chamfered transition, the straight platform transition in one end; When can guarantee with hands pressing block 4, compression draw-in groove 19 coordinates fixing along inclined-plane with compression back-off 18.Fastener 6 and gland cap 4 adopt nylon or ABS material, have good elasticity and intensity.
In order to optimize above-mentioned technical scheme further, the quantity of compression back-off 18 is multiple, is distributed on fastener 6 position that axially distance is different; The quantity of compression draw-in groove 19 is multiple accordingly.So, just define multistage buckle structure, different extruding forces can be applied to haemostatic valve, thus produce different deformation quantities, the openings of sizes of final realization adjustment haemostatic valve, to different sizes, can meet the user demand of different size conduit or apparatus.
As preferably, compression back-off 18 quantity of every one-level is symmetrically arranged multiple about axis, and the quantity of the compression draw-in groove 19 of this one-level is multiple accordingly, to ensure the stability of locking positioning, and the uniformity of extruding force.For the fastener 6 of the annular provided in the present embodiment, its locking structure comprises two compression back-offs 18 that 180 °, interval is oppositely arranged, and its structure can with reference to shown in Fig. 4.
In order to optimize above-mentioned technical scheme further, fastener 6 is also provided with button domes 17, compression back-off 18 is arranged on button domes 17.As preferably, button domes 17 and compression back-off 18 are integral type structure.Under compression, when button domes 17 is pressed, back-off 18 easily can be separated from draw-in groove 19, and haemostatic valve can recover original shape.
As preferably, in opening adjusting mechanism, being provided with position limiting structure, for keeping the annexation between fastener 6 and gland cap 4 in the on-compressed state, preventing fastener 6 from departing from from gland cap 4.Specifically adopt buckle structure in the present embodiment, as shown in Figure 4 and Figure 5, fastener 6 is also provided with assembling buckle 20, gland cap 4 is also provided with the assembling draw-in groove for coordinating with assembling buckle 20, and assembling draw-in groove has certain axial dimension, thus assembling buckle 20 can be allowed within it distally to move vertically, so that carry out compressed action.Certainly, above-mentioned locking structure and position limiting structure can also by miscellaneous parts, and such as the 3rd adjustment part realizes, and just overall structure can be more complex.
As shown in Figure 4, its assembling buckle 20 be relative two in 180 °, interval to fastener 6 structure that the present embodiment provides, and with compress back-off 18 and stagger 90 ° and arrange.The structure of gland cap 4 as shown in Figure 5, comprises the sidewall of annular and circular end wall, and on its sidewall, 180 °, interval offers two compression draw-in grooves 19 relatively, and assembling draw-in groove is relative two in 180 °, interval, and staggers 90 ° with compression draw-in groove 19 and arrange; Be provided with the annular boss for compressed tampon valve vertically inside end wall, the end face inside it forms above-mentioned planar annular, can provide uniform extruding force for haemostatic valve.The outer circumference surface of fastener 6 is used for coordinating with the inner peripheral surface of gland cap 4 sidewall, and can play guiding function vertically for it, the outside dimension of the outer circumference surface of fastener 6 is not more than the internal diameter size of gland cap 4 sidewall.
Assembling buckle 20 on fastener 6 relatively compression back-off 18 is arranged on its side near far-end, assembling draw-in groove on gland cap 4 relatively compresses draw-in groove 19 and is arranged on its side near far-end, so, when fastener 6 is set in gland cap 4, assembling buckle 20 and assembling draw-in groove coordinate spacing in advance, realize both spacing preventing to be separated, when further gland cap 4 distally being pressed, compression back-off 18 and compression draw-in groove 19 just lock, both maintenances relatively fixing is constant to the decrement of haemostatic valve.
In the another kind of specific embodiment that this programme provides, first adjustment part and the second adjustment part threaded engagement form locking structure, the screw-internal thread fit of external screw thread with the second adjustment part of the first adjustment part can be specially, realize stepless locking structure, different extruding forces can be applied to haemostatic valve.If Fig. 8 and 9 is rotary adjustable valve catheter sheath, controlled the openings of sizes of haemostatic valve by the turncap at swivel joint place, thus ductule and apparatus can ensure excellent anthemorrhagic performance by equal greatly to realize difference.
Below be all apply force compresses haemostatic valve vertically, can also act on diametrically and make it that deformation occur.Namely opening adjusting mechanism radially can make its openings get smaller by compressed tampon valve, its concrete scheme can be: adapter body 12 near-end adopts elastomeric material, the inner surface of opening adjusting mechanism adopts near-end to be the pyramidal structure of miner diameter end, so in its process of distally moving vertically, along with diminishing of its internal diameter, all butt joint main bodys 12 and interior haemostatic valve thereof can apply radial extruding force, make the openings get smaller of haemostatic valve.
In order to optimize above-mentioned technical scheme further, haemostatic valve comprises the first haemostatic valve 13 and the second haemostatic valve 14 be coaxially arranged in adapter body 12 proximal end bore, and the second haemostatic valve 14 is positioned at the near-end side of the first haemostatic valve 13, the opening size of the second haemostatic valve 14 is greater than the opening size of the first haemostatic valve 13, and the elastic modelling quantity of the first haemostatic valve 13 is greater than the elastic modelling quantity of the second haemostatic valve 14.
Adopt snap for locking structure below, be described further in conjunction with the technical scheme of its specific works mode to the present embodiment:
Be illustrated in figure 6 the structural representation of adjustable valve catheter sheath normality, now the compression draw-in groove 19 of gland cap 4 does not coordinate with the compression back-off 18 of fastener 6, and the opening size of the second haemostatic valve 14 is larger; Now, catheter sheath can be smooth and easy by compared with the convergent divergent channel of large gauge and guide instrument; First haemostatic valve 13 and the second haemostatic valve 14 are the inconsistent silicones of soft durometer and elasticity, have good elasticity and restoration; Even if the various conduit used in convergent divergent channel and interventional procedure and apparatus repeat to insert also can keep good anthemorrhagic performance; Meanwhile, after conduit or apparatus are drawn out of, the first haemostatic valve 13 still can the leakage of effectively anti-Hemostatic Oral Liquid.
Be illustrated in figure 7 the structural representation of adjustable valve catheter sheath squeezed state, when pressing gland cap 4 downwards with hands, compression draw-in groove 19 coordinates fixing with compression back-off 18, and the material of the second haemostatic valve 14 is softer, and the situation lower cut size by compression becomes rapidly very little; Now, catheter sheath can ensure, in the catheter insertion sheath pipe of a lot of specification less of convergent divergent channel, still can ensure good anthemorrhagic performance; When simultaneously conduit is extracted, the first haemostatic valve 13 still can the loss of effectively anti-Hemostatic Oral Liquid.
Controlled the openings of sizes of the second haemostatic valve 14 in joint by the gland cap 4 of pressing catheter sheath near-end, thus realize catheter sheath and all can keep good anthemorrhagic performance when inserting large gauge conduit and inserting small dimension conduit; Anthemorrhagic performance good under the first haemostatic valve 13 can ensure catheter sheath Light Condition in joint simultaneously.
As preferably, the first haemostatic valve 13 adopts slot cut, and the second haemostatic valve 14 adopts circular incision, and its structure can with reference to shown in Fig. 2.In joint, biplate haemostatic valve can ensure good anthemorrhagic performance, and wherein the first haemostatic valve 13 is slot cut, and ensure the anthemorrhagic performance under catheter sheath Light Condition, the second haemostatic valve 14 is circular incision, ensures the anthemorrhagic performance under catheter sheath load condition.Certainly, those skilled in the art can also adopt the haemostatic valve of greater number, and determine openings of sizes and the material soft or hard degree of each haemostatic valve according to actual needs, do not repeat them here.
Fastener 6 can be fixedly connected with adapter body 12 by buckle structure.Can also be designed to integral structure by the first adjustment part with in adapter body 12, be namely different from above-mentioned split-type structural, the near-end of butt joint main body 12 is transformed, and makes it have the construction features of the first adjustment part in opening adjusting mechanism
As shown in Figure 1, the adjustable valve catheter sheath that the embodiment of the present invention provides distally arrives near-end, comprises convergent divergent channel tip 1, sheath pipe body 2, mark pipe cap 3, gland cap 4, convergent divergent channel joint 5, fastener 6, side pipe 7 and three-way cock 8.Adjustable valve catheter sheath is tubulose, and length is 200mm ~ 1450mm, and internal diameter is 1.0mm ~ 8mm, and external diameter is 1.5mm ~ 10mm.Adjustable valve catheter sheath is primarily of sheath pipe and dilator composition, and dilator is enclosed within sheath pipe, and far-end stretches out sheath pipe, is fixedly connected with gland cap 4 proximally by convergent divergent channel joint 5.
As shown in Figures 2 and 3, sheath pipe joint place is made up of gland cap 4, fastener 6, second haemostatic valve 14, first haemostatic valve 13, adapter body 12, collateral junction 15 and stitching eye 11; Adjustable valve catheter sheath sheath pipe pipe shaft is made up of body 2 and sheath tip end 6; Tapering transition is processed at the tip of sheath pipe, and when convergent divergent channel or other catheter insertion sheath pipe body 2 inner chambers, " zero " transition between them ensures that catheter sheath can intravasation smoothly, not easily causes the damage of blood vessel and skin; Sheath pipe joint body 12 and pipe shaft are by injection moulding or bonding connection, and joint mark pipe cap 3 is mainly used in the diameter identifying body; Collateral system comprises side pipe 7 and three-way cock 8, and Main Function injects anticoagulant or other drug in air in punching press sheath pipe and operation process; Wherein three-way cock 8 is made up of rotary valve 9 and threeway seat 10 interference fit; Collaterally to form by collateral junction 15 is bonding with adapter body 11; In addition, adapter body 12 is also provided with a stitching eye 11, after catheter sheath inserts blood vessel, with passing the suture through the string holes sewing up eye 11, it is temporarily sewn on skin, make whole catheter sheath system can not long because of the intervene operation time or that patient is in operation process extremity movable and damage is caused to blood vessel.
During surgical, first dilator is inserted catheter sheath inner chamber, sheath tip end 16 is stretched out at convergent divergent channel tip 1, and convergent divergent channel joint 5 coordinates with sheath pipe gland cap 4; The smooth intravasation inner chamber of row vessel puncture rear tube sheath, withdraws from dilator and guiding wire; Now, if doctor needs the induction system by large gauge, do not need to press block 4, directly insert catheter sheath inner chamber by the proximal port of gland cap; If doctor needs the conduit by small dimension, need to press a lower cover cap 4 downwards, then insert catheter sheath inner chamber along proximal port; Operating process is simple and convenient.
In sum, the adjustable valve catheter sheath that the embodiment of the present invention provides, adjustable valve catheter sheath is primarily of sheath pipe and dilator composition, and sheath pipe proximal joint place is provided with fastener, the first haemostatic valve 13, second haemostatic valve 14 and gland cap; Coordinated the decrement controlling the second haemostatic valve 14 by fastener with the draw-in groove of gland cap, thus change openings of sizes, realize good sealing and push performance.
Its haemostatic valve adopts double-sheet arrangement, when have conduit or apparatus by time, the second haemostatic valve 14 ensures anthemorrhagic performance; When conduit or apparatus are withdrawn from, the first haemostatic valve 13 guarantees that blood can not run off; The cooperation of gland cap 4 and fastener 6 can control the openings of sizes of the second haemostatic valve 14, make the conduit of different tube diameters specification and apparatus by time, can ensure good sealing property, resistance is very little simultaneously, ensures good operating handle; First haemostatic valve 13 and the second haemostatic valve 14 adopt different hardness and elastic material to make; First haemostatic valve 13 elastic modelling quantity is comparatively large, and the second haemostatic valve 14 is softer, effectively can control openings of sizes under compressive state.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an adjustable valve catheter sheath, is characterized in that, its sheath pipe proximal joint place is provided with haemostatic valve, and for compressing the opening adjusting mechanism of described haemostatic valve.
2. adjustable valve catheter sheath according to claim 1, is characterized in that, described opening adjusting mechanism can compress described haemostatic valve vertically makes its openings get smaller.
3. adjustable valve catheter sheath according to claim 2, is characterized in that, described haemostatic valve is arranged in the proximal end bore of adapter body (12);
Described opening adjusting mechanism comprises the first adjustment part and the second adjustment part, described first adjustment part is fixedly connected on described adapter body (12), described second adjustment part distally can move vertically under the guide effect of described first adjustment part, and described second adjustment part has the planar annular for compressing described haemostatic valve vertically.
4. adjustable valve catheter sheath according to claim 3, is characterized in that, is provided with locking structure in described opening adjusting mechanism, keeps relative fixing after described second adjustment part can be made distally to move vertically with described first adjustment part.
5. adjustable valve catheter sheath according to claim 4, it is characterized in that, described first adjustment part is fastener (6), described second adjustment part is gland cap (4), described locking structure comprises the compression back-off (18) be arranged on fastener (6), and is arranged on the compression draw-in groove (19) for coordinating with described compression back-off (18) on described gland cap (4) relevant position.
6. adjustable valve catheter sheath according to claim 5, it is characterized in that, described fastener (6) is also provided with described button domes (17), described compression back-off (18) is arranged on described button domes (17).
7. adjustable valve catheter sheath according to claim 4, is characterized in that, described first adjustment part and described second adjustment part threaded engagement form described locking structure.
8. adjustable valve catheter sheath according to claim 1, is characterized in that, described opening adjusting mechanism radially can compress described haemostatic valve makes its openings get smaller.
9. the adjustable valve catheter sheath according to claim 1-8 any one, it is characterized in that, described haemostatic valve comprises and is coaxially arranged on the first haemostatic valve (13) in adapter body (12) proximal end bore and the second haemostatic valve (14), and described second haemostatic valve (14) is positioned at the near-end side of described first haemostatic valve (13), the opening size of described second haemostatic valve (14) is greater than the opening size of described first haemostatic valve (13), and the elastic modelling quantity of described first haemostatic valve (13) is greater than the elastic modelling quantity of described second haemostatic valve (14).
10. adjustable valve catheter sheath according to claim 9, is characterized in that, described first haemostatic valve (13) adopts slot cut, and described second haemostatic valve (14) adopts circular incision.
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| CN201510258854.4A CN104800954B (en) | 2015-05-20 | 2015-05-20 | A kind of adjustable valve catheter sheath |
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| CN201510258854.4A CN104800954B (en) | 2015-05-20 | 2015-05-20 | A kind of adjustable valve catheter sheath |
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| CN106510778A (en) * | 2016-12-14 | 2017-03-22 | 陈飞 | Novel tearable vein sheath |
| CN107261296A (en) * | 2017-07-19 | 2017-10-20 | 桃江县人民医院 | The angiography catheter that a kind of joint size is adjustable and can expand sheath pipe orifice |
| CN108883250A (en) * | 2015-12-18 | 2018-11-23 | 波士顿科学国际有限公司 | For reducing the blood vessel guide seat of leakage blood |
| CN110037759A (en) * | 2019-05-29 | 2019-07-23 | 迪泰医学科技（苏州）有限公司 | A kind of catheter sheath of adjustable opening |
| CN110037760A (en) * | 2019-05-30 | 2019-07-23 | 北京华脉泰科医疗器械有限公司 | Operation handle and medical adjustable bending sheath tube |
| CN110582324A (en) * | 2017-03-13 | 2019-12-17 | 波士顿科学有限公司 | Hemostatic valve and methods of making and using same |
| WO2020134092A1 (en) * | 2018-12-24 | 2020-07-02 | 杭州唯强医疗科技有限公司 | Hemostatic valve, sheath, and catheter sheath assembly |
| CN112807562A (en) * | 2020-12-30 | 2021-05-18 | 上海御瓣医疗科技有限公司 | Compressing device capable of quantitatively controlling sealing diameter |
| CN115624413A (en) * | 2022-05-31 | 2023-01-20 | 湖南埃普特医疗器械有限公司 | Adjustable sheath pipe |
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| CN108883250A (en) * | 2015-12-18 | 2018-11-23 | 波士顿科学国际有限公司 | For reducing the blood vessel guide seat of leakage blood |
| CN108883250B (en) * | 2015-12-18 | 2023-11-21 | 波士顿科学国际有限公司 | Vascular introducer seat for reducing blood leakage |
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| CN106510778B (en) * | 2016-12-14 | 2024-02-20 | 河北医科大学第二医院 | Novel tearable venous sheath |
| CN106510778A (en) * | 2016-12-14 | 2017-03-22 | 陈飞 | Novel tearable vein sheath |
| CN110582324B (en) * | 2017-03-13 | 2022-04-15 | 波士顿科学有限公司 | Hemostatic valve and methods of making and using same |
| CN110582324A (en) * | 2017-03-13 | 2019-12-17 | 波士顿科学有限公司 | Hemostatic valve and methods of making and using same |
| CN107261296A (en) * | 2017-07-19 | 2017-10-20 | 桃江县人民医院 | The angiography catheter that a kind of joint size is adjustable and can expand sheath pipe orifice |
| WO2020134092A1 (en) * | 2018-12-24 | 2020-07-02 | 杭州唯强医疗科技有限公司 | Hemostatic valve, sheath, and catheter sheath assembly |
| CN110037759A (en) * | 2019-05-29 | 2019-07-23 | 迪泰医学科技（苏州）有限公司 | A kind of catheter sheath of adjustable opening |
| CN110037759B (en) * | 2019-05-29 | 2024-05-07 | 迪泰医学科技（苏州）有限公司 | Adjustable open-ended catheter sheath |
| CN110037760A (en) * | 2019-05-30 | 2019-07-23 | 北京华脉泰科医疗器械有限公司 | Operation handle and medical adjustable bending sheath tube |
| CN112807562A (en) * | 2020-12-30 | 2021-05-18 | 上海御瓣医疗科技有限公司 | Compressing device capable of quantitatively controlling sealing diameter |
| CN115624413A (en) * | 2022-05-31 | 2023-01-20 | 湖南埃普特医疗器械有限公司 | Adjustable sheath pipe |
| CN115624413B (en) * | 2022-05-31 | 2023-08-29 | 湖南埃普特医疗器械有限公司 | Adjustable sheath tube |
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| CN104800954B (en) | 2017-10-13 |
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