Joint for operatively coupling a contoured inner compression member and an inner guide channel member for medical device delivery systems

• US 20060247661A1
• Filed: 04/20/2006
• Published: 11/02/2006
• Est. Priority Date: 04/20/2005
• Status: Abandoned Application

• Current Assignee: Cook Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Incorporated (Cook Group Incorporated)
• Inventors: Richards, Kathryn E., Melsheimer, Jeffry S., Pal, Dharmendra
• Application Number:
  US11/408,259
• Publication Number:
  US 20060247661A1
• Time in Patent Office: Days
• US Class Current: 606/108
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61M 25/0045 multi-layered, e.g. coated coating materials A61L29/08
• CPC Class Codes: A61M 25/005 with embedded materials for reinforcement, e.g. wires, coils, braids
• CPC Class Codes: A61M 25/0053 having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid
• CPC Class Codes: A61M 25/0662 Guide tubes

Abstract

Internal joints for medical device delivery systems to deploy implantable prostheses at a selected location inside a patient'"'"'s body, and methods of making the joint, are provided. An inner guide channel member has first and second ends, whereby the second end has an outer diameter and outer surface. A cannulated securing body has an inner securing section with a receiving cavity being sized to receive the inner guide channel member second end outer diameter and having an inner engaging surface operatively coupling to the inner guide channel member second end outer surface. The cannulated securing body further having a base securing section with an outer engaging surface. An elongate inner compression member has a distal mating end with an engaging surface having a contoured configuration complementary to and disposed against the base securing section outer engaging surface, wherein the base securing section and distal mating end are operatively coupled.

Claims

1. An internal joint for use in a medical device delivery system for deploying an implantable prosthesis at a selected location inside a patient'"'"'s body, comprising:

an inner guide channel member having a distal first end and a proximal second end, the second end comprising an outer diameter and an outer surface;

a securing body comprising an inner securing section and a base securing section, the inner securing section having a first end portion and a second end portion and defining a receiving cavity therebetween that is sized to receive the inner guide channel member second end outer diameter, the receiving cavity having at least one inner engaging surface disposed about and operatively coupled to the inner guide channel member second end outer surface, and the base securing section comprising a curved portion and an outer engaging surface; and

an elongate inner compression member having a proximal end and a distal mating end, the distal mating end comprising an engaging surface and a contoured configuration complementary to the base securing section outer engaging surface,

wherein the base securing section outer engaging surface and the distal mating end engaging surface are abutted, and the base securing section and distal mating end are operatively coupled.

2. The device of claim 1 wherein the securing body comprises a generally tubular cannula comprising metal.

3. The device of claim 1 wherein the inner compression member distal mating end contoured configuration is fluted and complementary to the base securing section outer engaging surface that is curved.

4. The device of claim 1 wherein the inner compression member distal mating end contoured configuration is flat and complementary to the base securing section outer engaging surface that is flat.

5. The device of claim 1 wherein the securing body is generally ring-shaped.

6. The device of claim 1 wherein the securing body is generally U-shaped.

7. The device of claim 1 wherein the base securing section and distal mating end are operatively coupled by welding or soldering.

8. The device of claim 1 wherein the base securing section and distal mating end are operatively coupled by fusing the base securing section outer engaging surface and the distal mating end engaging surface.

9. The device of claim 1 wherein the receiving cavity inner engaging surface and the inner guide channel member second end outer engaging surface are operatively coupled by a bond selected from the group consisting of a crimp, friction fit, press fit, wedge, glue, adhesive, resin, welding, chemical bonding materials, and combinations thereof.

10. The device of claim 1 wherein the inner guide channel member first end comprises an entry port and the inner guide channel member second end comprises an exit port, the entry port and exit port define a guide channel therebetween.

11. The device of claim 10 wherein the inner guide channel member further comprises an outer stent platform intermediate the first and second ends of the inner guide channel member ends and a proximal stent restraint.

12. The device of claim 10 wherein the inner guide channel member further comprises a taper intermediate the first and second ends of the inner guide channel member ends, the taper having a second outer diameter less than said second end outer diameter.

13. A medical device delivery system for deploying an implantable prosthesis at a selected location inside a patient'"'"'s body, the delivery system comprising:

an inner guide channel member having a distal first end and a proximal second end, the second end comprising an outer surface, and a stent platform disposed circumferentially about the inner guide channel member intermediate the first and second ends;

an atraumatic tip operatively coupled to the inner guide channel member first end, the atraumatic tip comprising a distal stent restraint;

a restraining ring disposed about and operatively coupled to the inner guide channel member intermediate the inner guide channel member first and second ends, the restraining ring comprising a proximal stent restraint;

an elongate inner compression member having a proximal end and a distal mating end, the distal mating end comprising an engaging surface and a contoured configuration; and

a cannulated securing body comprising an inner securing section disposed about and operatively coupled to the inner guide channel member second end and a base section having an outer engaging surface disposed against the distal mating end engaging surface, the base securing section and inner compression member distal mating end contoured configuration being operatively coupled.

14. The device of claim 13 wherein cannulated securing body inner securing section comprises a first end portion and a second end portion defining a receiving cavity therebetween and having an inner engaging surface.

15. The device of claim 14 wherein the receiving cavity inner engaging surface and the inner guide channel member second end outer surface are operatively coupled by a bond selected from the group consisting of a crimp, friction fit, press fit, wedge, glue, adhesive, resin, welding, chemical bonding materials, and combinations thereof.

16. The device of claim 13 wherein the base securing section of the cannulated securing member and distal mating end of the inner compression member are operatively coupled by a bond selected from the group consisting of a welding, soldering, gluing, fusing, and combinations thereof.

17. The device of claim 16 wherein the inner compression member distal mating end contoured configuration is fluted and complementary to the base securing section outer engaging surface that is curved.

18. The device of claim 16 wherein the inner compression member distal mating end contoured configuration is flat and complementary to the base securing section outer engaging surface that is flat.

19. The device of claim 16 further comprising a shrink tubing disposed about the bond and a portion of the cannulated securing member.

20. The device of claim 13 wherein the inner guide channel member first end comprises an entry port and the inner guide channel member second end comprises an exit port, the entry port and exit port defining a guide channel therebetween.

21. The device of claim 20 wherein the atraumatic tip further comprises a distal first end with an entry port and a proximal second end with an exit port and defining a guide channel, the atraumatic tip second end comprising said distal stent restraint and being operatively coupled to the inner guide channel member first end such that the atraumatic tip guide channel is in fluid communication with the guide channel of the inner guide channel member.

22. The device of claim 20 further comprising a rapid insertion catheter delivery system, the system comprising an elongate outer sheath having a proximal end and a distal end defining a passageway therebetween that slideably receives a portion of the inner compression member, the outer sheath distal end being operatively coupled to an outer guide channel member having first and second ends defining a guide channel that slideably receives the inner guide channel member, a breech position opening at or near the outer guide channel member second end and in fluid communication with both guide channels, and a handle operatively coupled to the outer sheath proximal end and axially slideable relative to a stylet operatively coupled to the inner compression member proximal end and intended to remain outside said patient.

23. A method of making an internal joint for use in a medical device delivery system for deploying an implantable prosthesis at a selected location inside a patient'"'"'s body, comprising the steps of:

providing an inner guide channel member having a distal first end with an entry port and a proximal second end with an exit port, the entry and exit ports defining a guide channel therebetween, the second end comprising an outer diameter and an outer surface;

providing a securing body comprising an inner securing section and a base securing section, the inner securing section having a first end portion and a second end portion and defining a receiving cavity therebetween that is sized to receive the inner guide channel member second end outer diameter, the receiving cavity having at least one inner engaging surface, and the base securing section comprising a curved portion and an outer engaging surface;

providing an elongate inner compression member having a proximal end and a distal mating end;

forming the inner compression member distal mating end in a form comprising an engaging surface and a contoured configuration complementary to the base securing section outer engaging surface;

disposing the base securing section outer engaging surface in abutting relationship to the distal mating end engaging surface;

inserting the inner guide channel member second end within the securing body inner securing section receiving cavity;

operatively coupling the receiving cavity inner engaging surface and the inner guide channel member second end outer surface.

24. The method of claim 23 further comprising the step of welding the base securing section and distal mating end.

25. The method of claim 23 further comprising the step of soldering the base securing section and distal mating end.

26. The method of claim 23 further comprising the step of fusing the base securing section outer engaging surface and the distal mating end engaging surface.

27. The method of claim 23 wherein the operatively coupling of the receiving cavity inner engaging surface and the inner guide channel member second end outer surface comprises the step of forming a bond selected from the group consisting of a crimp, friction fit, press fit, wedge, glue, adhesive, resin, welding, chemical bonding materials, and combinations thereof.

28. The method of claim 23 wherein the step of forming the contoured configuration comprises the step of rolling or forging the inner compression member distal mating end from a round to a fluted configuration complementary to the base securing section outer engaging surface.

29. The method of claim 23 wherein the step of forming the contoured configuration comprises the step of rolling or forging the inner compression member distal mating end from a round to a flat configuration complementary to the base securing section outer engaging surface.

34. The method of claim 27 wherein the forming the contoured configuration comprises the step of forging the inner compression member distal mating end from a round to a flat configuration complementary to the base securing section outer engaging surface.