CN205107826U - Blood vessel puncture ware - Google Patents
Blood vessel puncture ware Download PDFInfo
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- CN205107826U CN205107826U CN201520556288.0U CN201520556288U CN205107826U CN 205107826 U CN205107826 U CN 205107826U CN 201520556288 U CN201520556288 U CN 201520556288U CN 205107826 U CN205107826 U CN 205107826U
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- catheter sheath
- dilator
- vessel
- straight section
- puncturer
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Abstract
The utility model discloses a blood vessel puncture ware, blood vessel puncture ware includes catheter sheath and expander, the expander includes the expander straight section, catheter sheath is including the catheter sheath straight section and the interference part that are connected, the ARC structure who contracts in the interference part is, the diameter of the outward flange of interference part is less than the external diameter of expander straight section is worked as the expander inserts behind the catheter sheath, interference part with expander interference fit. The utility model provides a blood vessel puncture ware can not form the clearance after the bending, reduced the resistance when catheter sheath penetrates the blood vessel simultaneously, has avoided protruding or continuous folding, has avoided the hematal risk of damage.
Description
Technical field
This utility model relates to single use medical instruments field, specifically a kind of for percutaneous intervene operation, by the vessel puncturer of seal wire, surgical instrument, medical apparatus and instruments introducing patient's blood vessel system (particularly tremulous pulse).
Background technology
Modern medical service technical development is rapid, creates the method for many percutaneous intervene operations, and in these methods, percutaneous coronary transluminal angioplasty (PTCA), X-ray contrast art and other similar operation often use.Have many technology relevant medical apparatus and instruments can be incorporated in human blood circulatory system, what wherein find broad application is Seldinger technology.
In Seldinger technology, first on tremulous pulse or vein, open an osculum with puncture needle, then seal wire is introduced tremulous pulse or vein by the inner chamber of puncture needle, take out puncture needle.Dilator is entered catheter sheath inner chamber through catheter sheath haemostatic valve, and both have tubular structure, both enter tremulous pulse or vein together after near-end is pinned by latch-up structure.After sheath pipe position is fixing, withdraw from dilator.Final catheter sheath can be used as turnover or changes the passage of various intervention equipment.
As shown in Figure 1, can be used as the passage of the apparatus such as conduit, seal wire turnover blood vessel 4 after catheter sheath 1 intravasation 4.The far-end (i.e. free end, the one end away from catheter sheath 1) of dilator 2 has long pyramidal structure, has and expands site of puncture so that the effect of catheter sheath 1 intravasation 4.When penetrating blood vessel 4, the two with the use of.For effectively reducing propelling movement resistance when penetrating blood vessel 4, damage with less blood vessel 4, catheter sheath 1 is also tapered near one end of dilator 2 usually, and catheter sheath 1 and dilator 2 have certain length, therefore there is certain transition portion 3 in the two junction.
Disclose according to prior art as above, if transition portion 3 place can not strict controlling dimension or design improper, the following two kinds problem can be there is:
1, incorporated by reference to Fig. 2, the while of catheter sheath 1 and dilator 2 during intravasation 4, by there is natural torsion along blood vessel 4 direction behind site of puncture, now there is gap 5 in the intermediate location 3 of the two, its sharp edge has the risk of injured blood vessel wall, resistance when penetrating can be increased simultaneously, cause patient to operate inconvenience.
2, incorporated by reference to Fig. 3, the while of catheter sheath 1 and dilator 2 during intravasation 4, certain resistance can be subject to, if the transition portion of the two 3 fit dimension has problems or catheter sheath 1 is excessively thin, there will be bulging deformation or even continuous print collapsed shape 6, the external diameter of catheter sheath 1 is obviously increased, larger resistance can be produced like this and even cause catheter sheath 1 cannot intravasation 4, cause operative failure.
Utility model content
The purpose of this utility model is, provides a kind of vessel puncturer, reduces the resistance of intravasation, reduces the damage to blood vessel.
For solving the problems of the technologies described above, this utility model provides a kind of vessel puncturer, comprise catheter sheath and dilator, described dilator comprises dilator straight section, described catheter sheath comprises the catheter sheath straight section and interference part that are connected, and described interference part is the globoidal structure inside contracted, and the outer peripheral diameter of described interference part is less than the external diameter of described dilator straight section, after described dilator inserts described catheter sheath, described interference part and described dilator interference fit.
Optionally, for described vessel puncturer, the length of described interference part is 0.5-2mm, and the outer peripheral diameter of described interference part is 1-4.1mm.
Optionally, for described vessel puncturer, described catheter sheath also comprises transition structure and distal structure, and described catheter sheath straight section, described transition structure, described distal structure and described interference part are connected successively.
Optionally, for described vessel puncturer, on the longitudinal cross-section of described catheter sheath, the outer wheels profile of described transition structure is arc-shaped, the outer wheels profile of described transition structure and the outer wheels profile of described catheter sheath straight section and described distal structure all tangent; The radius of described transition structure is less than or equal to 20mm, and length is in the axial direction 2.5-3mm.
Optionally, for described vessel puncturer, described distal structure is tapered.
Optionally, for described vessel puncturer, the length of described distal structure is 2.5-6.5mm, and the diameter that described distal structure connects the first side of described transition structure is 1.9-4.5mm, and the diameter that described distal structure connects the second side of described interference part is 1.6-4.5mm; The thickness of described catheter sheath straight section is 0.15-2.1mm.
Optionally, for described vessel puncturer, described dilator also comprises transition structure and dilator is most advanced and sophisticated, and described dilator straight section, transition structure and dilator tip are connected successively.
Optionally, for described vessel puncturer, on the longitudinal cross-section of described dilator, the outer wheels profile of described transition structure is arc-shaped, the outer wheels profile of described transition structure and the outer wheels profile at described dilator straight section and dilator tip all tangent, the radius of the circular arc of described transition structure is less than or equal to 20mm, and length is in the axial direction 2.5-3mm.
Optionally, for described vessel puncturer, described dilator tip is tapered.
Optionally, for described vessel puncturer, the diameter of described dilator straight section is 1.4-3.9mm; The diameter that described dilator tip connects the first side of described transition structure is 1.3-3.8mm, and the diameter away from described transition structure second side is 0.5-1.5mm.
Optionally, for described vessel puncturer, described catheter sheath is polyethylene catheter sheath, polypropylene catheter sheath, fluorinated ethylene propylene copolymer catheter sheath, ethylene-tetrafluoroethylene copolymer catheter sheath, polyurethane catheter sheath, teflon catheter sheath or block polyether acidamide resin catheter sheath.
Compared to existing technology, in the vessel puncturer that this utility model provides, comprise catheter sheath and dilator, described dilator comprises dilator straight section, described catheter sheath comprises the catheter sheath straight section and interference part that are connected, and described interference part is the globoidal structure inside contracted, and the outer peripheral diameter of described interference part is less than the external diameter of described dilator straight section, after described dilator inserts described catheter sheath, described interference part and described dilator interference fit.Thus can not gap be produced when catheter sheath and the bending of dilator junction, reduce resistance when catheter sheath penetrates blood vessel simultaneously, avoid projection or continuous print folds, avoid the risk of injured blood vessel.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art medium vessels perforator;
Fig. 2 is that abnormal schematic diagram appears in prior art medium vessels perforator when intravasation;
Fig. 3 is that another abnormal schematic diagram appears in prior art medium vessels perforator when intravasation;
Fig. 4 is the structural representation of this utility model preferred embodiment medium vessels perforator;
Fig. 5 is the structural representation of catheter sheath in this utility model preferred embodiment;
Fig. 6 is the generalized section of catheter sheath in this utility model preferred embodiment;
Fig. 7 is the structural representation of dilator in this utility model preferred embodiment;
Fig. 8 is the partial cutaway schematic of this utility model preferred embodiment medium vessels perforator.
Detailed description of the invention
Below in conjunction with schematic diagram, vessel puncturer of the present utility model is described in more detail, which show preferred embodiment of the present utility model, should be appreciated that those skilled in the art can revise this utility model described here, and still realize advantageous effects of the present utility model.Therefore, following description is appreciated that extensively knowing for those skilled in the art, and not as to restriction of the present utility model.
In the following passage, more specifically this utility model is described by way of example with reference to accompanying drawing.According to the following describes and claims, advantage of the present utility model and feature will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, aid illustration this utility model embodiment lucidly.
Inventor thinks through studying for a long period of time, and vessel puncturer of the prior art easily produces gap, and easily produces protruding or folding, mainly because catheter sheath and dilator are improper and cause strictly controlling in the size design of intermediate location.Therefore, vessel puncturer is set to described dilator and comprises dilator straight section by inventor, described catheter sheath comprises the catheter sheath straight section and interference part that are connected, described interference part is the globoidal structure inside contracted, the outer peripheral diameter of described interference part is less than the external diameter of described dilator straight section, after described dilator inserts described catheter sheath, described interference part and described dilator interference fit.Thus overcome defect of the prior art, achieve experience of performing the operation preferably.
Below enumerate the preferred embodiment of described vessel puncturer, so that content of the present utility model to be clearly described, will be clear that, content of the present utility model is not restricted to following examples, and other improvement by the routine techniques means of those of ordinary skill in the art are also within thought range of the present utility model.
Please refer to Fig. 4, vessel puncturer of the present utility model, comprise catheter sheath 10 and dilator 20, described dilator 20 comprises dilator straight section 202, described catheter sheath 10 comprises the catheter sheath straight section 101 and interference part 104 that are connected, the globoidal structure of described interference part 104 for inside contracting, and the outer peripheral diameter of described interference part 104 is less than the external diameter of described dilator straight section 202, after described dilator 20 inserts described catheter sheath 10, described interference part 104 and described dilator 20 interference fit.Wherein, dilator straight section 202 is such as a cylinder-like structure, and overall thickness is consistent, and inside contracting of interference part 104 refers to interference part 104 gets over conductive pipe sheath 10 axis direction extension the closer to outward flange.
Incorporated by reference to Fig. 5 and Fig. 6, visible described catheter sheath 10 also comprises transition structure 103 and distal structure 102, and described catheter sheath straight section 101, described transition structure 103, described distal structure 102 and described interference part 104 are connected successively.
Concrete, the shape of described transition structure 103 is arc-shaped, with described catheter sheath straight section 101 and distal structure 102 tangent, this shows, on the longitudinal cross-section of described catheter sheath 10, the outer wheels profile of described transition structure 103 is arc-shaped, the outer wheels profile of described transition structure 103 and the outer wheels profile of described catheter sheath straight section 101 and described distal structure 102 all tangent.The radius R of the circular arc of described transition structure 103 is preferably less than or equal to 20mm, certainly, also can be greater than 20mm, such as 25mm, but excessive, is unfavorable for seamlessly transitting.Described transition structure 103 is 2.5-3mm along the length L2 in axis A direction.This tangent transition structure, more smooth when catheter sheath 10 can be made to insert blood vessel, reduce resistance, effectively prevent the damage to blood vessel.
Preferably, described distal structure 102 is tapered, namely gradually narrow to interference part 104 from described transition structure 103.Described distal structure 102 is 2.5-6.5mm along the length L1 in axis A direction, and its diameter D1 connecting the first side 1021 of transition structure 103 is 1.9-4.5mm, and the diameter D2 connecting the second side 1022 of interference part 104 is 1.6-4.5mm.
Described interference part 104 is less than or equal to 2mm along the length L3 in axis A direction, and be preferably 0.5-2mm, the diameter D3 of the outward flange 1041 of described interference part 104 is 1-4.1mm.Described interference part 104 outer surface is globoidal structure, and preferably, on the longitudinal cross-section of described catheter sheath 10, the outer wheels profile of described interference part 104 is arc-shaped, and outer wheels profile and the described distal structure 102 of described interference part 104 are tangent.It is thinner the closer to outward flange 1041, and extends to axis A, forms the structure of recessed shape, thus after coordinating with dilator 20, is conducive to the resistance reduced when penetrating blood vessel, avoids occurring protruding or folding, and can prevent gap, avoids scratching blood vessel.
In this utility model, described catheter sheath 10 can be polyethylene (PE) catheter sheath, polypropylene (PP) catheter sheath, fluorinated ethylene propylene copolymer (FEP) catheter sheath, ethylene-tetrafluoroethylene copolymer (ETFT) catheter sheath, polyurethane (PU) catheter sheath, politef (PTFE) catheter sheath or block polyether acidamide resin (PEBAX) catheter sheath.The thickness (except interference part 104) of described catheter sheath 10 is 0.15-2.1mm.
Below incorporated by reference to and with reference to figure 7, described dilator 20 also comprises transition structure 203 and dilator tip 201, and described dilator straight section 202, transition structure 203 and dilator tip 201 are connected successively.Preferably, described dilator straight section 202 is cylinder-like structure, and overall thickness is consistent, such as length L5 is 11-45mm, diameter is 1.4-3.9mm, and its diameter is slightly larger than the diameter of the outward flange 1041 of described interference part 104, is convenient to coordinate rear maintenance to stablize with catheter sheath 10.
The shape of described transition structure 203 is arc-shaped, most advanced and sophisticated 201 tangent with described dilator straight section 202 and dilator, this shows, on the longitudinal cross-section of described dilator 20, the outer wheels profile of described transition structure 203 is arc-shaped, the outer wheels profile of described transition structure 203 and the outer wheels profile at described dilator straight section 202 and dilator tip 201 all tangent.The radius of the circular arc of described transition structure 203 is less than or equal to 20mm, is certainly greater than and is also fine.Its length L6 is in the axial direction 2.5-3mm.Visible, this transition structure 203 is structurally close, functionally identical with the transition structure 103 in catheter sheath 10, can with reference to above to the description of transition structure 103.
Preferably, described dilator tip 201 is tapered, namely from gradually narrow away from described transition structure 203.The length L4 at described dilator tip 201 is 15-25mm.The diameter that described dilator most advanced and sophisticated 201 connects the first side 2011 of transition structure 203 is 1.3-3.8mm, and the diameter away from the second side 2012 of transition structure 203 is 0.5-1.5mm.This structure effectively can reduce resistance when penetrating blood vessel, avoids the damage to blood vessel.
Described dilator 20 can be polyethylene (PE) dilator, polypropylene (PP) dilator, polyurethane (PU) dilator or block polyether acidamide resin (PEBAX) dilator.The thickness of described dilator 20 is 0.2-1.8mm.
Incorporated by reference to the partial cutaway schematic that Fig. 8, Fig. 8 are this utility model medium vessels perforator.As seen from Figure 8, interference part 104 shown in dotted portion is not when inserting dilator 20, the diameter of its outward flange 1041 is less than the external diameter of dilator straight section 202, after catheter sheath 10 is combined with dilator 20, interference part 104 shown in bold portion is tightly fastened on the straight section 202 of dilator, considering the resistance inserting catheter sheath 10 in order to reduce dilator 20, making the diameter near outward flange 1041 place be less than the external diameter of dilator straight section 202 as far as possible.Diameter due to interference part 104 outward flange 1041 is less than the external diameter of dilator straight section 202, and in the globoidal structure inside contracted, therefore, when catheter sheath 10 and dilator 20 produce each other bend time, can not gap be produced, avoid and scratch blood vessel.Simultaneously, when the interference part 104 of this structure makes catheter sheath 10 penetrate blood vessel, resistance is lower, can avoid because catheter sheath 10 material is softer and wall thickness is thinner and the situation of bulging deformation occurs, namely avoid protruding and continuous print and be folded to form, be conducive to catheter sheath 10 intravasation smoothly.Experiment proves, traditional vessel puncturer puncture force when catheter sheath penetrates blood vessel is 4.9-6.5N, and vessel puncturer puncture force 3.7-4.2N of the present utility model, visible, puncture force level has significant reduction, greatly reduces probability blood vessel being caused to damage.
Those skilled in the art can carry out various change and modification to this utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of this utility model claim and equivalent technologies thereof, then this utility model is also intended to comprise these change and modification.
Claims (11)
1. a vessel puncturer, comprise catheter sheath and dilator, it is characterized in that, described dilator comprises dilator straight section, described catheter sheath comprises the catheter sheath straight section and interference part that are connected, and described interference part is the globoidal structure inside contracted, and the outer peripheral diameter of described interference part is less than the external diameter of described dilator straight section, after described dilator inserts described catheter sheath, described interference part and described dilator interference fit.
2. vessel puncturer as claimed in claim 1, it is characterized in that, the length of described interference part is 0.5-2mm, and the outer peripheral diameter of described interference part is 1-4.1mm.
3. vessel puncturer as claimed in claim 1, it is characterized in that, described catheter sheath also comprises transition structure and distal structure, and described catheter sheath straight section, described transition structure, described distal structure and described interference part are connected successively.
4. vessel puncturer as claimed in claim 3, it is characterized in that, on the longitudinal cross-section of described catheter sheath, the outer wheels profile of described transition structure is arc-shaped, the outer wheels profile of described transition structure and the outer wheels profile of described catheter sheath straight section and described distal structure all tangent; The radius of described transition structure is less than or equal to 20mm, and length is in the axial direction 2.5-3mm.
5. vessel puncturer as claimed in claim 3, it is characterized in that, described distal structure is tapered.
6. vessel puncturer as claimed in claim 5, it is characterized in that, the length of described distal structure is 2.5-6.5mm, the diameter that described distal structure connects the first side of described transition structure is 1.9-4.5mm, and the diameter that described distal structure connects the second side of described interference part is 1.6-4.5mm; The thickness of described catheter sheath straight section is 0.15-2.1mm.
7. vessel puncturer as claimed in claim 1, is characterized in that, described dilator also comprises transition structure and dilator is most advanced and sophisticated, and described dilator straight section, transition structure and dilator tip are connected successively.
8. vessel puncturer as claimed in claim 7, it is characterized in that, on the longitudinal cross-section of described dilator, the outer wheels profile of described transition structure is arc-shaped, the outer wheels profile of described transition structure and the outer wheels profile at described dilator straight section and dilator tip all tangent, the radius of the circular arc of described transition structure is less than or equal to 20mm, and length is in the axial direction 2.5-3mm.
9. vessel puncturer as claimed in claim 8, it is characterized in that, described dilator tip is tapered.
10. vessel puncturer as claimed in claim 9, it is characterized in that, the diameter of described dilator straight section is 1.4-3.9mm; The diameter that described dilator tip connects the first side of described transition structure is 1.3-3.8mm, and the diameter away from described transition structure second side is 0.5-1.5mm.
11. vessel puncturers as claimed in claim 1, it is characterized in that, described catheter sheath is polyethylene catheter sheath, polypropylene catheter sheath, fluorinated ethylene propylene copolymer catheter sheath, ethylene-tetrafluoroethylene copolymer catheter sheath, polyurethane catheter sheath, teflon catheter sheath or block polyether acidamide resin catheter sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520556288.0U CN205107826U (en) | 2015-07-28 | 2015-07-28 | Blood vessel puncture ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520556288.0U CN205107826U (en) | 2015-07-28 | 2015-07-28 | Blood vessel puncture ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205107826U true CN205107826U (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520556288.0U Active CN205107826U (en) | 2015-07-28 | 2015-07-28 | Blood vessel puncture ware |
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| CN (1) | CN205107826U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106377301A (en) * | 2015-07-28 | 2017-02-08 | 上海微创医疗器械（集团）有限公司 | Blood vessel puncture outfit |
| CN116196075A (en) * | 2023-05-06 | 2023-06-02 | 山东百多安医疗器械股份有限公司 | Puncture and guide device without skin expansion and blood return prevention |
-
2015
- 2015-07-28 CN CN201520556288.0U patent/CN205107826U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106377301A (en) * | 2015-07-28 | 2017-02-08 | 上海微创医疗器械（集团）有限公司 | Blood vessel puncture outfit |
| CN116196075A (en) * | 2023-05-06 | 2023-06-02 | 山东百多安医疗器械股份有限公司 | Puncture and guide device without skin expansion and blood return prevention |
| CN116196075B (en) * | 2023-05-06 | 2023-06-27 | 山东百多安医疗器械股份有限公司 | Puncture and guide device without skin expansion and blood return prevention |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190125 Address after: Room 201, 2nd floor, Building 5, 1303 Asia Pacific Road, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Minimally invasive Longmai Medical Technology (Jiaxing) Co., Ltd. Address before: 201203, 501, Newton Road, Zhangjiang hi tech park, Shanghai, Pudong New Area Patentee before: Shanghai MicroPort Medical Equipment (Group) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191121 Address after: 201203 Room 102, building 2, No. 501, Newton Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai Patentee after: Shanghai dragon minimally invasive medical equipment Co. Ltd. Address before: Room 201, 2nd floor, Building 5, 1303 Asia Pacific Road, Nanhu District, Jiaxing City, Zhejiang Province Patentee before: Minimally invasive Longmai Medical Technology (Jiaxing) Co., Ltd. |
|
| TR01 | Transfer of patent right |