Patent US3720884A successfully refreshed from Google Patents.
EP0238018A2
Expired / Lapsed
EP
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Guiding tube for medical instruments
Assignee: Terumo Corp
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Filing: 1987-03-16
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Granted: —
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Expires: 2007-03-16
Abstract
Abstract There is disclosed a guiding tube (11) for introducing rod-like medical instruments such as a catheter (15), which can be easily split and removed from, for example, a catheter (15), after the catheter (15) inserted through the guiding tube (11) has been attached to a blood vessel. The guiding tube (11) comprises a main body (13) provided with a longitudinal slit (12) and formed of a mixture of first and second materials and a stripe (14) detachably embedded liquid-tight in the slit (12) of the main body (13) and formed of a third material which exhibits a good bonding to the second material, but a poor bonding to the first material.
Inventors
- 👤 Toshinobu Ishida
- 👤 Yousuke Moriuchi
- 👤 Tadashi Kousai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 10:30
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/04; A61L31/041; A61L31/06; A61M; A61M25/00; A61M25/0009; A61M25/0012; A61M25/01; A61M25/06; A61M25/0662; A61M25/0668; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/16; C08L23/26
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
121 words
A tube for guiding rod-like medical instruments into a living body, comprising a main body provided with a longitudinal slit; and a stripe embedded liquid-tight in the slit of the main body: characterized in that said main body is formed of a mixture of first and second materials, and that said stripe is formed of a third material; said first material being substantially incapable of bonding to the third material, and said second material exhibiting a high bonding to the third material such that the stripe can be readily detached from the slit by application of a predetermined force to allow the guiding tube to be removed from the medical instrument after introduction of the medical instrument through the guiding tube.
Claim 2
Dependent Claim
121 words
A tube for guiding rod-like medical instruments into a living body, comprising a main body provided with a longitudinal slit; and a stripe embedded liquid-tight in the slit of the main body: characterized in that said main body is formed of a mixture of first and second materials, and that said stripe is formed of a third material; said first material being substantially incapable of bonding to the third material, and said second material exhibiting a high bonding to the third material such that the stripe can be readily detached from the slit by application of a predetermined force to allow the guiding tube to be removed from the medical instrument after introduction of the medical instrument through the guiding tube.
Claim 3
Dependent Claim
21 words
The tube for guiding rod-like medical instruments according to claim 1, characterized in that the first material is a polyolefin resin.
Claim 4
Dependent Claim
32 words
The tube for guiding rod-like medical instruments according to claim 1, characterized in that the second material is a polyolefin resin modified to exhibit a high bonding strength to the third material.
Claim 5
Dependent Claim
29 words
The tube for guiding rod-like medical instruments according to claim 1, characterized in that the third material is selected from the group consisting of polyamide resin and polyester resin.
Claim 6
Dependent Claim
25 words
The tube for guiding rod-like medical instruments according to claim 1, characterized in that the second material is a polyolefin resin modified with maleic acid.
Claim 7
Dependent Claim
37 words
The tube for guiding rod-like medical instruments according to claim 1, characterized in that the first material is a polyamide resin, the second amterial is a modified polyolefin resin, and the third material is a polyester resin.
Claim 8
Dependent Claim
30 words
The tube for guiding rod-like medical instruments according to claim 1, characterized in that the second material is a polymer prepared by modifying the polymer used as the first material.
Claim 9
Dependent Claim
39 words
The tube for guiding rod-like medical instruments according to claim 1, characterized in that the first material is a polyolefin resin, the second material is a modified polyolefin resin, and the third material is polyamide resin or polyester resin.
Claim 10
Dependent Claim
25 words
The tube for guiding rod-like medical instruments according to claim 7, characterized in that the second material is a polyolefin resin modified with maleic acid.
Claim 11
Dependent Claim
42 words
The tube for guiding rod-like medical instruments according to claim 4, characterized in that the third material is selected from the group consisting of 6-nylon, 6,6-nylon, ll-nylon, polyethylene terephthalate, polybutylene terephthalate and a polymer blend containing at least one of these polymers.
Claim 12
Dependent Claim
169 words
A medical instrument-guiding assembly, comprising: (i) a tube for guiding rod-like medical instruments into a living body, comprising a main body provided with a longitudinal slit; and a stripe embedded liquid-tight in the slit of the main body; and (ii) an inner needle provided with a hub engaged with the proximal end of the guiding tube and detachably inserted into the guiding tube, the blade tip portion of the inner needle projecting through the distal end of the guiding tube; characterized in the said main body is formed of a mixture of first and second materials, and that said stripe is formed of a third material; said first material being substantially incapable of bonding to the third material, and said Second material exhibiting a high bonding to the third material such that the stripe can be readily detached from the slit by application of a predetermined force to allow the guidng tube to be removed from the medical instrument after introduction of the medical instrument through the guiding tube.
Claim 13
Dependent Claim
169 words
A medical instrument-guiding assembly, comprising: (i) a tube for guiding rod-like medical instruments into a living body, comprising a main body provided with a longitudinal slit; and a stripe embedded liquid-tight in the slit of the main body; and (ii) an inner needle provided with a hub engaged with the proximal end of the guiding tube and detachably inserted into the guiding tube, the blade tip portion of the inner needle projecting through the distal end of the guiding tube; characterized in the said main body is formed of a mixture of first and second materials, and that said stripe is formed of a third material; said first material being substantially incapable of bonding to the third material, and said Second material exhibiting a high bonding to the third material such that the stripe can be readily detached from the slit by application of a predetermined force to allow the guidng tube to be removed from the medical instrument after introduction of the medical instrument through the guiding tube.
References Cited (Backward Citations)
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