EP0332649B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Assembly for introducing multiple catheters
Assignee: Schneider USA Inc
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Filing: 1987-11-13
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Granted: 1993-02-03
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Expires: 2007-11-13
Abstract
Abstract A method and assembly (20) for inserting a plurality of sensors into a biological fluid vessel for diagnosing the condition of the vessel or fluid. A pressure sensor (12) is described which is particularly adapted for use with a steerable guidewire (10) for selective positioning in the vessel. A guidewire (10) is inserted through the guiding catheter (32) and subselectively positioned in a region of interest in the coronary arterial tree. Multiple pressure sensors (12) are then threaded down the guidewire and positioned in the region of interest. In one version of the assembly, an angioplasty catheter is fitted to the guidewire and a pressure sensor device having a small flexible catheter body is fitted to the guidewire such that inserting the angioplasty catheter into a blood vessel also pushes the pressure sensor device into the vessel.
Inventors
- 👤 Huntly D. Millar
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 03:58
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/145; A61B5/14539; A61M; A61M25/00; A61M25/01; A61B5/02; A61B5/021; A61B5/0215; A61B8/00; A61B8/12; A61M25/0021; A61M25/0023; A61M25/0026; A61M2025/0037; A61M2025/0177; A61M2025/0183; A61M25/003; A61M25/0067; A61M25/0068; A61M25/0082; A61M25/0169
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
219 words
An assembly for engaging an elongated, flexible steerable guidewire (10) insertable in a biological fluid-carrying vessel and having a distal end positionable in a region of the vessel, the assembly comprising: a first device (11,111) adapted for engaging the guidewire and positionable in the region, the device including - an elongated body (14,122), coupling structure (20,118,132) connected to the body defining a passage longitudinally oriented with the body (14,122) for slidably receiving the guidewire (10), an elongated cathether (16,120,130,140) coupled to the body (122) in longitudinal alignment therewith; a second device (11,12,111,112) adapted for engaging the guidewire (10) and positionable in the region, the second device comprising a pressure sensor (12,126,128) including - an elongated body (14,122) having an internal cavity (22), engagement structure (20,132) connected to the body for slidably receiving the guidewire, an elongated catheter (16,120,130,140) coupled to the body (14,122) in longitudinal alignment therewith, transducer means (24,134) mounted to the body with one surface facing outwardly and another surface facing inwardly for measuring with the device inserted in the vessel, the pressure differential between the biological fluid adjacent the one surface and the fluid pressure in the cavity, the coupling structure (20,132) and the engagement structure (20,132) being complementally configured for simultaneous reception of both devices on the guidewire (10) in the region of the vessel.
Claim 2
Dependent Claim
26 words
The assembly according to claim 1, the coupling structure (20,118,132) defining an elongated lumen (30) in the catheter of the first device for receiving the guidewire.
Claim 3
Dependent Claim
25 words
The assembly according to claim 1, the coupling structure (20,118,132) depending from the member and defining a relatively short passage (30) for receiving the guidewire
Claim 4
Dependent Claim
23 words
The assembly according to claim 1, the coupling structure (20,118,132) comprising a guidewire-receiving groove (36) defined by a pair of spaced-apart fingers (38).
Claim 5
Dependent Claim
23 words
The assembly according to claim 1, the engagement structure (20,118,132) comprising a guidewire-receiving groove (36) defined by a pair of spaced-apart fingers (38).
Claim 6
Dependent Claim
28 words
The assembly according to claim 1, the engagement structure (20,118,132) depending from the distal body (14,122) and defining a relatively short passage (30) for receiving the guidewire (10).
Claim 7
Dependent Claim
45 words
The assembly according to claim 1, wherein the second device (11,12,111,112) comprises a pair of elongated bodies (122,126,128) adapted for positioning along the guidewire (10) in longitudinally spaced relation distal and proximal to said first device body (114) and a tether (124,146) connecting the bodies.
Claim 8
Dependent Claim
34 words
The assembly according to claim 7, the distal body (126) including an internal cavity, the tether (124,146) including a lumen communicating the cavity with a lumen in the catheter of the second device (128).
Claim 9
Dependent Claim
22 words
The assembly according to claim 1, the engagement structure including a journal (142) adapted to interfit the passage of the coupling structure.
Claim 10
Dependent Claim
26 words
The assembly according to claim 7, the first device comprising an angioplasty balloon (114), the tether (124,146) being transversely flexible and displaceable during balloon (116) inflation.
Claim 11
Dependent Claim
31 words
The assembly according to claim 1, the catheter (120) of the first device (11,111,114) being sufficiently axially rigid for inserting the first device in the vessel coupled to the guidewire (10).
Claim 12
Dependent Claim
41 words
The assembly according to claim 11, the catheter (130) of the second device (11,111) having an axial rigidity less than the catheter (120) of the first device (11,111), the second device disposed relative to the first device for simultaneous insertion therewith.
Claim 13
Dependent Claim
44 words
The assembly according to claim 1, the coupling structure (20,118,132) and engagement structure (20,132) being complementally dimensioned relative to the respective bodies (14,122) for positioning each body in the same general transverse cross-section of the vessel with the bodies radially spaced about the guidewire.
Claim 14
Dependent Claim
9 words
The assembly of claim 1, including the guidewire (10)
Claim 15
Dependent Claim
29 words
The assembly of claim 14, the guidewire (10) having a constricted fitting region (44) outside the vessel with the distal end of the guidewire (10) positioned in the region.
Claim 16
Dependent Claim
97 words
A pressure sensor (12) adapted for engaging an elongated member such as a guidewire (10) or the like, insertable in a biological fluid-carrying vessel comprising: a distal (144,126) and a proximal body (128), the distal body (144,126) having means for engaging the member; a pressure transducer (134) provided on at least one of the bodies (122); an elongated catheter (120,130,140) coupled to the proximal body (128); and an elongated tether (124,146) connecting the bodies (144,126,128) for allowing longitudinal spacing of the bodies relative to the member with the tether (146) generally parallel and spaced from the member.
Claim 17
Dependent Claim
18 words
A pressure sensor according to claim 16, the proximal body (128) including means for engaging the member (10).
Claim 18
Dependent Claim
18 words
A pressure sensor according to claim 16, the proximal body (128) including means for engaging a catheter (140).
Claim 19
Dependent Claim
33 words
A pressure sensor according to claim 16, each body (126,128) including a pressure transducer (134) and a cavity adapted to remain in isolation from fluid with the sensor inserted in a fluid-filled vessel.
Claim 20
Dependent Claim
29 words
A pressure sensor according to claim 19, the tether (124) including a lumen connecting the cavities and the catheter (130) including a lumen in communication with the proximal cavity.
Claim 21
Dependent Claim
211 words
An assembly for engaging an elongated, flexible, steerable guidewire (10) insertable in a biological fluid-carrying vessel and having a distal end positionable in a region of the vessel, the assembly comprising: a first device (11,111,112,114,32) adapted for engaging the guidewire (10) and positionable in the region, the device including - an elongated member (14,122), coupling structure (20,118,132) connected to the member (14,122) defining a passage longitudinally oriented with the member for slidably receiving the guidewire (10), an elongated catheter coupled to the member in longitudinal alignment therewith; a second device (11,111,114,126,144) having a body (14,122) adapted for engaging the guidewire (10) distal to the first device and positionable in the region, the second device including - engagement means (142,144) connected to the distal body for slidably receiving the guidewire (10) and adapted to contact the distal end of said member of the first device, and an elongated catheter (120) coupled to the body; the catheter (120) of the first device (111,112) being relatively axially rigid and the catheter (130) of the second device (11,111,114) being relatively flexible, such that with the devices coupled to the guidewire, advancement of the first catheter (120) places the member (14,122) in contact with the body (144,126) advancing the second device (11,111,114) along the guidewire (10).
Claim 22
Dependent Claim
24 words
The assembly according to claim 21, the second device including another body (128) positioned proximal to said member with the devices engaging a guidewire.
Claim 23
Dependent Claim
15 words
The assembly according to claim 22, one of the bodies (122) comprising a pressure sensor.
Claim 24
Dependent Claim
114 words
An assembly insertable in a biological fluid-carrying vessel comprising: a first device (114) adapted for positioning in the vessel and including an elongated member and an elongated catheter (120,140) coupled to the member in longitudinal alignment therewith; a second device (112) having an elongated body and adapted for positioning in the vessel including - engagement means (132) for connecting the body to the first device, and an elongated catheter (130) coupled to the body in longitudinal alignment therewith; the catheter (120,140) of the first device being relatively axially rigid and the catheter (130) of the second device being relatively flexible, such that advancement of the first device affects simultaneous advancement of the second device.
Claim 25
Dependent Claim
20 words
The assembly according to claim 24, said engagement structure (142,144) connecting the body to the distal end of the member.
Claim 26
Dependent Claim
34 words
The assembly according to claim 24, the second device (112) including a body (126,144) connected to the distal end of the member and a body (128) connected to the proximal end of the member.
Claim 27
Dependent Claim
19 words
The assembly according to claim 24, the member including a balloon (116) and the body (122) a pressure sensor.
Claim 28
Dependent Claim
155 words
A pressure sensor (12) adapted for engaging a steerable guidewire (10) insertable in a biological fluid carrying vessel comprising: an elongated body (14); transducer means mounted to the body in an interior cavity (22), the cavity being isolated from the exterior biological fluid proximate the transducer means with the sensor inserted in a biological vessel, and for measuring, with the sensor inserted in the fluid of a biological vessel, the pressure differential between the biological fluid proximate to the transducer and the fluid pressure within the cavity; a tubular catheter (16) coupled to the body and having a lumen; lead means (28) coupled to the transducer means and having a portion disposed within the lumen; and an elongated coupling structure (20) depending from the body (14), extending less than or equal to the length of the body and longitudinally aligned therewith, the structure having a longitudinally oriented passage (39) for slidably receiving the guidewire (10).
References Cited (Backward Citations)
No citation records indexed.
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