Medical systems and related methods
Medical systems and related methods are disclosed. In some embodiments, the medical systems include an inner tubular member defining an aperture and an outer tubular member at least partially surrounding the inner tubular member. The inner and outer tubular members can be arranged such that an implantable medical endoprosthesis can be disposed therebetween.
1. A system, comprising:
an outer tubular member defining a lumen;
an inner tubular member extending within the lumen of the outer tubular member, the inner tubular member having a sidewall defining an aperture configured to allow a guide wire to pass therethrough, the inner and outer tubular members being configured so that an implantable medical endosprosthesis can be disposed between the inner and outer tubular members;
a support member disposed in a lumen of the inner tubular member, the support member being configured such that at least a portion of the support member can be disposed adjacent the aperture, the support member and the outer tubular member being configured to retract relative to the inner tubular member, wherein the support member has a solid cross-section;
wherein a portion of the sidewall of the inner tubular member proximal to the aperture defines a plurality of cuts so as to increase the flexibility of the inner tubular member while allowing the inner tubular member to be pushable in the distal direction; and
wherein a portion of the sidewall of the inner tubular member distal to the aperture defines at least one cut in the form of a continuous spiral for increasing the flexibility of the inner tubular member.
2. The system of claim 1 , wherein the aperture is a longitudinally extending elongate slot.
3. The system of claim 2 , wherein the elongate slot has a length greater than or equal to a length of an implantable medical endoprosthesis disposed between the outer tubular member and the inner tubular member.
4. The system of claim 1 , wherein the inner tubular member is of unitary construction.
5. The system of claim 1 , wherein the inner tubular member is formed of one or more metals.
6. The system of claim 1 , wherein the cuts defined in the portion of the sidewall of the inner tubular member proximal to the aperture are in the form of an interrupted spiral.
7. The system of claim 1 , wherein the support member is longitudinally fixed relative to the outer tubular member.
8. The system of claim 7 , wherein a distal end portion of the support member is longitudinally fixed relative to the outer tubular member at a location adjacent an opening in a sidewall of the outer tubular member.
9. The system of claim 1 , wherein a distal end portion of the support member is shaped to direct a guide wire into the aperture when the guide wire is passed through the lumen of the inner tubular member in a proximal direction.
10. The system of claim 1 , wherein the support member is substantially rotationally fixed relative to the inner tubular member.
11. The system of claim 10 , wherein at least a portion of the support member has a non-circular cross-section and at least a portion of the lumen of the inner tubular member has a non-circular cross-section.
12. The system of claim 10 , wherein the support member comprises a radial projection configured to be received in a longitudinal channel defined by the inner tubular member.
13. The system of claim 1 , further comprising a sleeve extending within a distal portion of the inner tubular member and being configured to allow a guide wire to be passed through the sleeve.
14. The system of claim 13 , wherein the sleeve comprises a polymer.
15. The system of claim 13 , wherein the sleeve is arranged to direct a guide wire into the aperture when the guide wire is passed through the sleeve in a proximal direction.
16. The system of claim 15 , wherein the sleeve comprises a proximal portion that extends into the aperture.
17. The system of claim 1 , further comprising an implantable medical endoprosthesis disposed between the outer tubular member and the inner tubular member.
18. The system of claim 17 , wherein the implantable medical endoprosthesis is a self-expanding implantable medical endoprosthesis.
19. A system, comprising:
an inner tubular member having a sidewall defining an elongate slot, the inner tubular member being formed of one or more metals;
an outer tubular member at least partially surrounding the inner tubular member, the outer tubular member having a sidewall at least partially defining an opening arranged such that a guide wire can be passed through the elongate slot of the inner tubular member and the opening of the outer tubular member, the inner tubular member and the outer tubular member being arranged such that an implantable medical endoprosthesis can be disposed between the inner tubular member and the outer tubular member;
wherein a portion of the sidewall of the inner tubular member proximal to the elongate slot defines a plurality of cuts arranged in the form of an interrupted spiral;
wherein a portion of the sidewall of the inner tubular member distal to the elongate slot defines at least one cut that is arranged in the form of a continuous spiral; and
a solid support member having a solid cross-section disposed in a lumen of the inner tubular member, the support member being configured such that at least a portion of the support member can be disposed adjacent the elongate slot, and the support member being arranged to retract relative to the inner tubular member.
20. The system of claim 19 , wherein the elongate slot extends longitudinally along the inner tubular member.
21. The system of claim 20 , wherein the elongate slot has a length greater than or equal to a length of an implantable medical endoprosthesis disposed between the outer tubular member and the inner tubular member distal to the elongate slot.
22. The system of claim 19 , wherein the inner tubular member is of unitary construction.
23. The system of claim 19 , wherein a distal end portion of the support member is configured to direct a guide wire toward the aperture when the guide wire is passed through a lumen of the inner tubular member in a proximal direction.
24. The system of claim 19 , wherein the support member is longitudinally fixed relative to the outer tubular member.
25. The system of claim 24 , wherein a distal end portion of the support member is longitudinally fixed relative to the outer tubular member at a location adjacent the opening in the sidewall of the outer tubular member.
26. The system of claim 19 , further comprising a sleeve extending within a distal portion of the inner tubular member and being configured to allow a guide wire to be passed through the sleeve.
27. The system of claim 26 , wherein the sleeve is arranged to direct a guide wire into the aperture when the guide wire is passed through the sleeve in a proximal direction.
28. The system of claim 19 , further comprising an implantable medical endoprosthesis disposed between the inner tubular member and the outer tubular member.