EP0479565A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Medical apparatus for endoscopic surgery
Assignee: Cook Inc
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Filing: 1991-10-02
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Granted: —
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Expires: 2011-10-02
Abstract
Abstract A medical device for endoscopic access of a body cavity and a method of percutaneously placing inner and outer access sheaths of the device into the body cavity. The medical device includes inner and outer access sheaths and a dilator which is inserted into the outer sheath and has a shoulder or a shoulder piece for abutting against the proximal end of the outer sheath. The device also includes a wire guide that is percutaneously inserted into the body cavity via an introducer needle. The dilator and outer sheath are placed over the wire guide to dilate the puncture site and introduce the dilator and outer sheath into the body cavity. The dilator comprises an elongated cylindrical member having a passageway opening distally from the conically-shaped distal end and from an outside lateral wall of the dilator about the proximal end. The dilator also includes an end cap which is utilized to force the dilator and the outer sheath through the puncture site and into the body cavity. After positioning in the body cavity, the dilator and wire guide are removed through the outer sheath. The inner sheath is then inserted through the outer sheath into the body cavity. The proximal ends of both the inner and outer sheaths include seals for maintaining insufflation of the body cavity. The inner sheath includes a shoulder piece having a chamber and a side port for connection to an insufflation gas line.
Inventors
- 👤 Douglas O. Olsen
- 👤 Brian L. Bates
- 👤 Thomas A. Osborne
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 03:20
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3417; A61M; A61M29/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
74 words
Medical apparatus for endoscopic surgery comprising: an elongated member having a tapered first distal end, a first proximal end, and an outside lateral wall extending between said first ends; a first passageway extending longitudinally in said member and opening from said tapered first distal end distally and from said outside lateral wall about said first proximal end; and an end cap fixed to and adjacent to said first proximal end of said elongated member.
Claim 2
Dependent Claim
74 words
Medical apparatus for endoscopic surgery comprising: an elongated member having a tapered first distal end, a first proximal end, and an outside lateral wall extending between said first ends; a first passageway extending longitudinally in said member and opening from said tapered first distal end distally and from said outside lateral wall about said first proximal end; and an end cap fixed to and adjacent to said first proximal end of said elongated member.
Claim 3
Dependent Claim
124 words
Medical apparatus for endoscopic surgery, comprising a first elongated member (101) having a tapered first distal end (106) for penetrating a patient's skin (152) and dilating the location of entry, and said member also having a proximal end with means (107) for imparting force to facilitate the penetration and dilation, characterised by an outer sheath (102) arranged upon the penetration to surround part of the first member, the outer dimensions of the first member and the inner dimensions of the outer sheath in the region of overlap being designed to permit withdrawal of the first member, said outer sheath also having a tapered distal end (122) for facilitating penetration by the outer sheath of the patient's skin prior to withdrawal of the first member.
Claim 4
Dependent Claim
124 words
Medical apparatus for endoscopic surgery, comprising a first elongated member (101) having a tapered first distal end (106) for penetrating a patient's skin (152) and dilating the location of entry, and said member also having a proximal end with means (107) for imparting force to facilitate the penetration and dilation, characterised by an outer sheath (102) arranged upon the penetration to surround part of the first member, the outer dimensions of the first member and the inner dimensions of the outer sheath in the region of overlap being designed to permit withdrawal of the first member, said outer sheath also having a tapered distal end (122) for facilitating penetration by the outer sheath of the patient's skin prior to withdrawal of the first member.
Claim 5
Dependent Claim
47 words
Medical apparatus according to claim 2, characterised in that the proximal end of the outer sheath has a flexible seal (131) designed to maintain its seal during and after withdrawal of the first member, and optionally to provide a seal upon insertion of further apparatus or instrument(s).
Claim 6
Dependent Claim
28 words
Medical apparatus according to claim 2 or 3, characterised in that the first member and/or the outer sheath is provided with means (114) for limiting the said overlap.
Claim 7
Dependent Claim
81 words
Apparatus according to claim 2,3 or 4, further characterised by an inner sheath (103) adapted to be inserted within the outer sheath after withdrawal of the first member, means (143) being provided for limiting the degree of insertion, said inner sheath being with or without a side port (144) communicating with a passageway (138) through the inner sheath, and/or a flexible seal (145 to 149) at the proximal end of the inner sheath for providing sealed access to the passageway therein.
Claim 8
Dependent Claim
113 words
Medical apparatus for endoscopic surgery, comprising: an outer sheath (102) having a distal end (122), a proximal end (123), and a first hollow passageway (134) extending longitudinally between said first ends; and an inner sheath (103) having a distal end (136), a proximal end (139) a second hollow passageway (138) extending longitudinally between the ends, and a lateral opening (144) positioned about the proximal end and communicating with hollow passageway of the inner sheath, said outer sheath including a first seal (131) attached about its proximal end and having an aperture (132) sized for sealing around said inner sheath when said inner sheath is positioned with in the passageway of the outer sheath.
Claim 9
Dependent Claim
113 words
Medical apparatus for endoscopic surgery, comprising: an outer sheath (102) having a distal end (122), a proximal end (123), and a first hollow passageway (134) extending longitudinally between said first ends; and an inner sheath (103) having a distal end (136), a proximal end (139) a second hollow passageway (138) extending longitudinally between the ends, and a lateral opening (144) positioned about the proximal end and communicating with hollow passageway of the inner sheath, said outer sheath including a first seal (131) attached about its proximal end and having an aperture (132) sized for sealing around said inner sheath when said inner sheath is positioned with in the passageway of the outer sheath.
Claim 10
Dependent Claim
32 words
Apparatus of claim 3 or 6, characterised in that said inner sheath includes a flexible seal (145) attached about its proximal end and having a slit (146) communicating with the passageway therethrough.
Claim 11
Dependent Claim
30 words
Apparatus of claim 7, characterised in that said inner sheath comprises a second flexible seal (148) attached about the proximal end and having an aperture (147) positioned adjacent said slit.
Claim 12
Dependent Claim
26 words
Apparatus according to any one of claims 2 to 8, characterised in that the first member has a passageway substantially therethrough for accommodating a wire guide.
Claim 13
Dependent Claim
26 words
Apparatus according to any one preceding claim, characterised in that the outer surface of the first member and the outer sheath has a hydrophilic material coating.
Claim 14
Independent Claim
101 words
A method of percutaneously placing inner and outer access sheaths into a body cavity, comprising: introducing a wire guide percutaneously into said body cavity through a puncture site; dilating said puncture site with a dilator and said outer sheath placed over said wire guide; positioning said dilator and the distal end of said outer sheath into said body cavity through said dilated puncture site; removing said dilator and wire guide from said body cavity through said outer sheath; and introducing said inner sheath into said body cavity through said outer sheath when positioned in said cavity through said dilated puncture site.
Claim 15
Independent Claim
101 words
A method of percutaneously placing inner and outer access sheaths into a body cavity, comprising: introducing a wire guide percutaneously into said body cavity through a puncture site; dilating said puncture site with a dilator and said outer sheath placed over said wire guide; positioning said dilator and the distal end of said outer sheath into said body cavity through said dilated puncture site; removing said dilator and wire guide from said body cavity through said outer sheath; and introducing said inner sheath into said body cavity through said outer sheath when positioned in said cavity through said dilated puncture site.
References Cited (Backward Citations)
No citation records indexed.
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