EP0221973B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Tracheotomy closure
Assignee: ESKA MEDICAL & KUNSTSTOFFTECHNIK GMBH & CO., VORMA
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Filing: 1986-05-10
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Granted: 1990-08-08
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Expires: 2006-05-10
Abstract
Abstract A tracheotomy closure comprises a valve (18, 23) which is voluntarily actuable during expiration, thereby enabling the person to talk. An open tube part (10) insertable in the trachea opening comprises a cannula stub (7) which traverses the opening and opens to the outside, and carries on its front end a housing (9) for the valve. An adjustable flange ring (8) surrounds the cannula stub (7) and seals the trachea opening. The valve is formed of a non-return valve (18) which is pivotably arranged within the housing (9) of the valve so as to open during inspiration and close during expiration when a predetermined flow speed is exceeded.
Inventors
- 👤 Ingo F. Herrmann
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:43
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0465; A61M16/0468; A61M2209/00; A61M2209/04
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
184 words
A tracheal fistula closure having: a valve adapted to be activated at will to enable the patient to speak during exhalation; a cannular spigot (7) which is introducible into the fistula (2) and which has a closure member (10) introducible into the trachea (1); a flanged ring (8) adapted to be pushed on to the cannular spigot (7) in clamping or latching engagement therewith or to be rigidly connected to the cannular spigot; a valve body (9, 29) which seals the cannular spigot (7) off from the outside; and means which render the valve inoperative upon a predetermined dynamic pressure being exceeded, a check valve flap (18) being pivotally mounted in the valve body (9, 29) and opening in the inhalation direction and closing in the exhalation direction when a predetermined flow velocity is exceeded, characterised in that the valve flap (18) has a magnetically operative component (21) which co-operates with another magnetically operative component (22) on or in the valve body wall and which keeps the valve flap (18) open, and at least one of the magnetically operative components is a permanent magnet.
Claim 2
Dependent Claim
184 words
A tracheal fistula closure having: a valve adapted to be activated at will to enable the patient to speak during exhalation; a cannular spigot (7) which is introducible into the fistula (2) and which has a closure member (10) introducible into the trachea (1); a flanged ring (8) adapted to be pushed on to the cannular spigot (7) in clamping or latching engagement therewith or to be rigidly connected to the cannular spigot; a valve body (9, 29) which seals the cannular spigot (7) off from the outside; and means which render the valve inoperative upon a predetermined dynamic pressure being exceeded, a check valve flap (18) being pivotally mounted in the valve body (9, 29) and opening in the inhalation direction and closing in the exhalation direction when a predetermined flow velocity is exceeded, characterised in that the valve flap (18) has a magnetically operative component (21) which co-operates with another magnetically operative component (22) on or in the valve body wall and which keeps the valve flap (18) open, and at least one of the magnetically operative components is a permanent magnet.
Claim 3
Dependent Claim
173 words
A closure having: a valve adapted to be activated at will to enable the patient to speak during exhalation; a cannular spigot (7) which is introducible into the fistula (2) and which -has a closure member (10) introducible into the trachea (1); a flanged ring (8) adapted to be pushed on to the cannular spig6t (7) in clamping or latching engagement therewith or to be rigidly connected to the cannular spigot; a valve body (9, 29) which seals the cannular spigot (7) off from the outside; and means which render the valve inoperative upon a predetermined dynamic pressure being exceeded, a check valve flap (18) being pivotally mounted in the valve body and opening in the inhalation direction and closing in the exhalation direction when a predetermined flow velocity is exceeded, characterised in that the valve flap (18) is mounted in that part of the valve body (9, 29) which is at the bottom in the operative position, the valve flap (18) being retained in the open position by an additional weight (21).
Claim 4
Dependent Claim
173 words
A closure having: a valve adapted to be activated at will to enable the patient to speak during exhalation; a cannular spigot (7) which is introducible into the fistula (2) and which -has a closure member (10) introducible into the trachea (1); a flanged ring (8) adapted to be pushed on to the cannular spig6t (7) in clamping or latching engagement therewith or to be rigidly connected to the cannular spigot; a valve body (9, 29) which seals the cannular spigot (7) off from the outside; and means which render the valve inoperative upon a predetermined dynamic pressure being exceeded, a check valve flap (18) being pivotally mounted in the valve body and opening in the inhalation direction and closing in the exhalation direction when a predetermined flow velocity is exceeded, characterised in that the valve flap (18) is mounted in that part of the valve body (9, 29) which is at the bottom in the operative position, the valve flap (18) being retained in the open position by an additional weight (21).
Claim 5
Dependent Claim
46 words
A closure according to claim 1 or 2, characterised in that the valve flap (18) and/or its seat are and/or is made of a resilient material so that the flap (18) can after closure pass through its seat (23) when the predetermined dynamic pressure is exceeded.
Claim 6
Dependent Claim
21 words
A closure according to any of claims 1-3, characterised in that the valve flap (18) is kept open by spring force.
Claim 7
Dependent Claim
24 words
A closure according to any of claims 1-4, characterised in that the force with which the valve flap (18) is kept open is adjustable.
Claim 8
Dependent Claim
28 words
A closure according to claim 5, characterised in that the bearing position of the valve flap (18) is adjustable in the peripheral direction of the cannular spigot (7).
Claim 9
Dependent Claim
28 words
A closure according to any of claims 1-6, characterised in that the valve body (9) is pushed on to the cannular spigot (7) and is rotatable relatively thereto.
Claim 10
Dependent Claim
27 words
A closure according to claim 7, characterised in that the cannular spigot (7) has near its contact surface with the valve body (9) a peripheral web (31).
Claim 11
Dependent Claim
27 words
A closure according to claim 8, characterised in that the valve body (9) has near its contact surface with the cannular spigot (7) a peripheral web (32).
Claim 12
Dependent Claim
22 words
A closure according to any of claims 1-6, characterised in that the valve body (29) is part of the cannular spigot (7).
Claim 13
Dependent Claim
50 words
A closure according to any of claims 1-10, characterised in that the valve flap is in the form of a thin disc (18) and is connected by way of a film-like hinge (20) to a radial prolongation (17) pushed sealingly through a slot (16, 30) in the valve body wall.
Claim 14
Dependent Claim
26 words
A closure according to claim 11, characterised in that the radial prolongation has at least one abutment (19) which defines and limits the depth of insertion.
Claim 15
Dependent Claim
39 words
A closure according to claims 11 and 12 or 13, characterised in that the slot (30) is so wide in the peripheral direction of the valve body (29) that the valve flap prolongation (17) is adjustable in angular position.
Claim 16
Dependent Claim
28 words
A closure according to any of claims 1-13, characterised in that the flanged ring (8) is formed with a recess (Fig. 8: 12) over some of its periphery.
Claim 17
Dependent Claim
46 words
A closure according to any of claims 1-14, characterised in that the flange ring (8) has a radially projecting tab (15) which is formed with a bore (14), and a retaining thread (13) connected to the valve body (9) is secured in the latter bore (14).
Claim 18
Dependent Claim
35 words
A closure according to any of claims 1-14, characterised in that the cannular spigot (7) has a radially projecting tab (24) and the valve body (9) is connected thereto by way of a retaining thread.
Claim 19
Dependent Claim
36 words
A closure according to any of claims 1-16, characterised in that the closure element is a tubular member (10) which is disposed on the inner end of the cannular spigot (7) and which is open theretowards.
Claim 20
Dependent Claim
37 words
A closure according to claim 17, characterised in that the ends of the tubular member (10) have a bevelled offset so that the tubular member (10) is shorter on the side remote from the cannular spigot (7).
Claim 21
Dependent Claim
30 words
A closure according to claim 17 or 18, characterised in that the tubular member (10) is formed with an aperture (25) in the wall remote from the cannular spigot (7).
Claim 22
Dependent Claim
27 words
A closure according to any of claims 17-19, characterised in that the tubular member (10) is completely open on the side remote from the cannular spigot (7).
Claim 23
Dependent Claim
24 words
A closure according to any of claims 17-20, characterised in that the tubular member (10) is made of a soft material near its ends.
Claim 24
Dependent Claim
17 words
A closure according to any of claims 1-21, characterised in that it is made of silicone rubber.
Claim 25
Dependent Claim
36 words
A closure according to any of claims 1-22, characterised in that the valve disc (18), its radial prolongation (17) and the film-like hinge (20) are made of a resilient plastics, more particularly a polyacetate resin (POM).
References Cited (Backward Citations)
No citation records indexed.
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