NZ746581B2 - Rapid exchange dilator for sheathless catheterization - Google Patents

Rapid exchange dilator for sheathless catheterization

Info

Publication number
NZ746581B2
NZ746581B2 NZ746581A NZ74658116A NZ746581B2 NZ 746581 B2 NZ746581 B2 NZ 746581B2 NZ 746581 A NZ746581 A NZ 746581A NZ 74658116 A NZ74658116 A NZ 74658116A NZ 746581 B2 NZ746581 B2 NZ 746581B2
Authority
NZ
New Zealand
Prior art keywords
proximal
distal
dilator
skived portion
skived
Prior art date
Application number
NZ746581A
Other versions
NZ746581A (en
Inventor
Andrew Messenger
Original Assignee
Cordis Corp
Filing date
Publication date
Application filed by Cordis Corp filed Critical Cordis Corp
Priority to NZ774536A priority Critical patent/NZ774536B2/en
Priority claimed from PCT/IB2016/000491 external-priority patent/WO2017168189A1/en
Publication of NZ746581A publication Critical patent/NZ746581A/en
Publication of NZ746581B2 publication Critical patent/NZ746581B2/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M2025/0183—Rapid exchange or monorail catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • A61M25/0029—Multi-lumen catheters with stationary elements characterized by features relating to least one lumen located at the middle part of the catheter, e.g. slots, flaps, valves, cuffs, apertures, notches, grooves or rapid exchange ports
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M29/00—Dilators with or without means for introducing media, e.g. remedies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/0208—Subcutaneous access sites for injecting or removing fluids

Abstract

Transradial catheterization is used to gain access through the radial artery located in the patient's wrist. However, certain challenges are associated catheterization of this small size vessel. For example, spasm, pain and/or discomfort may occur. These challenges are exacerbated when a sheath is employed in the catheterization procedure. It is also desirable to provide a dilator having good pushability while maintaining sufficient flexibility to navigate a patient's vasculature. Provided is a dilator (10) for gaining access to a vessel of a patient, comprising a tubular distal member (14) that extends along a longitudinal axis and has a maximal outer diameter from a distal end to a proximal end and a skived portion. A proximal member (16) that extends longitudinally from a distal end having a skived portion to a proximal end. Transition tubing (28) connected to the proximal member so that the proximal member is coaxially disposed within the transition tubing, and wherein the transition tubing is connected to the distal member in an overlapping portion that extends coaxially within the proximal end of the distal member. A rapid exchange port (20) at a transition region formed by an overlap of the skived portion of the distal end of the proximal member and the skived portion of the proximal end of the distal member and a lumen that extends longitudinally continuously through the rapid exchange port between the proximal end of the distal member and the distal end of the proximal member. The provided dilator offers sheathless access to a vessel of a patient. The transition tubing 28 provides a smooth change in flexibility between the relatively stiffer proximal member 16 and the more flexible distal member 14 while reducing the tendency to kink at the junction.

Claims (11)

1. A dilator for gaining access to a vessel of a patient, comprising: a tubular distal member that extends along a longitudinal axis, the tubular distal member having a maximal outer diameter from a distal end to a proximal end and a skived portion; a proximal member that extends longitudinally from a distal end having a skived portion to a proximal end; transition tubing connected to the proximal member so that the proximal member is coaxially disposed within the transition tubing, wherein the transition tubing is connected to the distal member in an overlapping portion that extends coaxially within the proximal end of the distal member; and a rapid exchange port at a transition region formed by an overlap of the skived portion of the distal end of the proximal member and the skived portion of the proximal end of the distal member and a lumen that extends longitudinally continuously through the rapid exchange port between the proximal end of the distal member and the distal end of the proximal member.
2. The dilator of claim 1, wherein the rapid exchange port comprises an opening formed by opposing angles of the skived portion of the distal member and the skived portion of the proximal member.
3. The dilator of claim 1 or claim 2, wherein the proximal member comprises a hypotube.
4. The dilator of any one of claims 1 to 3, wherein the proximal member has a reduced diameter with respect to the maximal outer diameter of the distal member and the skived portion of the proximal member overlaps the skived portion of the distal member coaxially within a projected circumference of the distal member.
5. The dilator of claim 4, wherein the skived portion of the proximal member extends distally past the skived portion of the distal member within the lumen. 19954692_1 (GHMatters) P109622.NZ
6. The dilator of claim 4, wherein at least the skived portion of the proximal member is coaxially disposed within the transition tubing and wherein the transition tubing overlaps at least the skived portion of the distal member and is coaxially disposed within a projected circumference of the distal member.
7. The dilator of claim 6, wherein the transition tubing extends distally past the skived portion of the distal member within the lumen.
8. The dilator of claim 6 or claim 7, wherein the transition tubing is heat welded to at least the skived portion of the proximal member and to at least the skived portion of the distal member.
9. The dilator of any one of claims 6 to 8, wherein the transition tubing is intact from a proximal end to a distal end.
10. The dilator of any one of claims 6 to 8, wherein a distal end of the transition tubing is skived to correspond to the skived portion of the proximal member.
11. The dilator of any one of claims 1 to 10, wherein the distal member is more flexible than the proximal member. 19954692_1 (GHMatters) P109622.NZ
NZ746581A 2016-03-30 Rapid exchange dilator for sheathless catheterization NZ746581B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NZ774536A NZ774536B2 (en) 2016-03-30 Rapid exchange dilator for sheathless catheterization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2016/000491 WO2017168189A1 (en) 2016-03-30 2016-03-30 Rapid exchange dilator for sheathless catheterization

Publications (2)

Publication Number Publication Date
NZ746581A NZ746581A (en) 2023-12-22
NZ746581B2 true NZ746581B2 (en) 2024-03-26

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