NL2018553B1

NL2018553B1 - Guide wire-catheter assembly

Info

Publication number: NL2018553B1
Application number: NL2018553A
Authority: NL
Inventors: Franciscus Maria Vrancken Peeters Mark-Paul; Martijn Havik Sander
Original assignee: Mencius Medical B V
Priority date: 2017-03-20
Filing date: 2017-03-20
Publication date: 2018-09-28

Abstract

The present invention provides a guide wire-catheter assembly, comprising: a catheter tube having a longitudinal channel, and a guide wire configured to be movable in the longitudinal channel characterized in that, the catheter tube comprises a bendable part near its distal end, wherein the bendable part comprises, in the circumferential direction of the catheter tube, a varying flexibility, such that exerting a longitudinal compression force in a proximal direction at a compression location distally of the distal end part results in bending of the bendable part, and in that the guide wire comprises an expandable part, wherein the expandable part is movable between a non-expanded position, in which a cross section of the expandable part is smaller than a smallest cross section of the longitudinal channel of the catheter tube and an expanded position, in which a cross section of the expandable part is larger than the smallest cross section of the longitudinal channel of the catheter tube, wherein, when the expandable part is in the non-expanded position, the guide wire can be moved completely in and out of the longitudinal channel of the catheter tube, and wherein, when the expandable part is in the non-expanded position, the expandable part is configured to exert the longitudinal compression force on the compression location in order to bend the bendable part of the catheter tube.

Claims

No: Claims I 15 inventive step Yes Claims No: Claims 9 11 1-8 12-15 I ndustria! applicability Yes. Claims Nd: Claims 1 15
2. Gitatfons and explanations see separate sheet

Application number

WRITTEN OPINION

Box No. VII Certain defects in the appiication see separate sheet

WRITTEN OPINION (SEPARATE SHEET)

Appiication number

Re Item V

Reasoned statement with regard to novelty, inventive step or industrial applicability; citations and explanations supporting such statement

1 REFERENCES

Reference is made to the following documents:

DI US 2005/131343 Al (ABRAMS ROBERT M [US] ET AL) 16 juni

2005 (2005-06-16)

D2 EP 1 800 708 A1 (CORDIS CORP [US]) 27 juni 2007 ¢2007-06-27)

D3 WO 2006/119503 A1 (ABBOTT LAB [US]; VON OEP EN

RANDOLF [US]: YRIBARREN TRAVIS [US]; RiETH) 9 november 2006 (2006-11-09)

D4 EP 2 893 951 A1 (COVIDIEN L.P [US]) 15 juli 2015 (2015-07-15)

D5 EP 0 689 851 A1 (CORDIS EUROP [NL]) 3 januari 1996 (1996-01-03)

2 INDEPENDENT CLAIM 1

The present application does not meet the criteria of patentability, because the subject-matter of claim 1 does not involve an inventive step,

2.1 Document D1 (US 2005/131343 A1: alineas [0007] - [0008], [0026], [0029] [0030], [0033], [0037] - [0039]; figuren 1-7) is regarded as being the prior art closest to the subject-matter of claim 1, and discloses:

Draad-katheter samenstel (400: figuren 4A, 4B), omvattende:

- een katheterbuis (402) met een longitudinaal kanaal (figuren 4A,4B), en

- een draad (420) ingericht om beweegbaar te zijn in het longitudinale kanaal (figuren 4A, 4B), waarbij de katheterbuis een buigbaar deel nabij zijn distale einde omvat (alineas [0030], [0033], [0038]). waarbij 'rorm NL237-3 iJsly &CÖE; (sheet 1)

WRITTEN OPINION (SEPARATE SHEET)

Appiication number hel buigbare deei, in een omtreksrichting van de katheterbuis, een variërende flexibiliteit omvat (alinea [0033]}, zodanig dat het uitoefenen van een longitudinale compressiekracht in een proximale richting op een compressielocatie distaai van het buigbare deei resulteert in het buigen van het buigbare deel (alineas [0030], [0033], [0038]), en dat de draad een expandeerbaar deel (428) omvat, waarbij het expandeerbare deel beweegbaar is tussen een niet-geëxpandeerde positie (figuur 4A), waarin een dwarsdoorsnede van de het expandeerbare deel kleiner is dan een kleinste dwarsdoorsnede van het longitudinale kanaal van de katheterbuis (figuur 4A), en een geëxpandeerde positie (figuur 4B), waarin een dwarsdoorsnede van het expandeerbare deel groter is dan de kleinste dwarsdoorsnede van het longitudinale kanaal van de katheterbuis (figuur 4B), waarbij, wanneer het expandeerbare deel zich in de niet-geëxpandeerde positie bevindt, dé draad volledig in en uit het longitudinale kanaal van de katheterbuis kan worden bewogen (alinea [0029];·. en waarbij, wanneer het expandeerbare deel zich in de geëxpandeerde positie bevindt, het expandeerbare deel is ingericht om de longitudinale compressiekracht uit te oefenen op de compressielocatie met het deel het buigbare deel van de katheterbuis te buigen (alineas [0030], [0033], [0038]).

2.2 The subject-matter of claim 1 therefore differs from tills known device in that said draad is a ’’voerdraad·',

2.3 The problem to be solved by the present invention may therefore be regarded as how to provide improved vasculature navigation capabilities.

2.4 The solution proposed in claim 1 of the present application cannot be considered as involving an inventive step.

However, these features have already been employed for the same purpose in a similar device (see D2 (EP 1 800 708 A1: alineas [0010], [0030] [0036]; figuren 3 - 7)). It would be obvious to the person skilled in the art, namely when the same result is to be achieved, to apply these features with corresponding effect to a device according to Di. thereby arriving at a device according to claim 1,

2.5 Claim 1 is not inventive over D3 (WO 2006/119503 Al (alineas [0046] [0047], [0051], [0075] - [0076]; figuren 4 - 10, 14 -15) in the light of D4 (EP 2 393 951 Al: alineas [0003], [0020], [0023], [0028]).

The same problem-solution approach as under items 2.3, 2,4 applies.

WRITTEN OPINION Application number (SEPARATE SHEET)_________________________________________NL2018553
3 DEPENDENT CLAIMS 2 - 15

3.1 The present application does not meet the criteria of patentability, because the subject-matter of claims 2, 3, 5, 7, 12 - 15 does not involve an inventive step.

3.1.1 The features of dependent claims 2. 3, 5, 7, 12 -15 have already been employed for the same purpose in a similar device (see D1 (EP 1 8Q0 7G8 A1: alineas [0010], [0030] - [0036]: figuren 3 - 7)). it would therefore be obvious to the person skilled in the art to apply this feature with corresponding effect to a device according to D2, thus arriving at a device according to claim 2, 3. 5, 7, 12 ~ 15.

3.1.2 The features of dependent claims 6, 8 have already been employed for the same purpose in a si milar device (see D5 (EP 0 689 851 Al: bladzijde 2, regel 35 - regel 59; figuren 1 - 3)). It would therefore be obvious to the person skilled in the art to apply this feature with corresponding effect to a device according to DI, thus arriving at a device according to claims 6.8.

3.1.3 In claim 4 a slight constructional change in the device of claim 1 is defined which comes within the scope of the customary practice followed by persons skilled in the art, especially as the advantages thus achieved can readily be foreseen. Consequently, the subject-matter of claim 4 aiso lacks an inventive step.

3,2 Claims 9 »11 appear to be new and inventive.

Re Item VII
4 FORMAL OBJECTIONS

4.1 The features of the claims are not provided with reference signs placed in parentheses.

rGFm NL237-3 sheet; (July SCOG; tshe-sT 3'.