Internal joint for medical devices, and methods of making the internal joint

• US 20060247755A1
• 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: Melsheimer, Jeffry S., Pal, Dharmendra
• Application Number:
  US11/408,277
• Publication Number:
  US 20060247755A1
• Time in Patent Office: Days
• US Class Current: 623/1.110
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61M 25/0009 Making of catheters or other medical or surgical tubes
• CPC Class Codes: A61M 25/0014 Connecting a tube to a hub

Abstract

Internal joints for medical devices such as delivery systems for stents, prosthetic valve devices, and other implantable articles inside a patient'"'"'s body, and methods of manufacturing the internal joint, are provided with an inner compression member having a distal mating end portion. A tubular inner guide channel member has first and second end portions defining a channel therebetween, the first end portion including an entry port and the second end portion including an exit port. The inner compression member distal mating end portion is implanted into the inner guide channel member second end portion between inner and outer surfaces or melt bonds to one of the inner guide channel member second end portion inner or outer surfaces. In another embodiment, the inner compression member distal mating end portion melt bonds to one of the inner guide channel member second end portion inner and outer surfaces.

Claims

1. An internal joint for use in a medical device, comprising:

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

an inner guide channel member having a first end portion, a second end portion, and defining a channel therebetween, the second end portion having an engaging surface; and

a joint comprising a melt-bonding material and comprising a melt bond that operatively couples the inner compression member distal mating end portion engaging surface and the inner guide channel member second end portion engaging surface.

2. The device of claim 1 wherein the inner guide channel member further comprises an entry port at or near the first end portion and an exit port at or near the second end portion, the ports being in fluid communication with the channel therebetween.

3. The device of claim 1 wherein the inner guide channel member second end portion further comprises an inner surface and an outer surface.

4. The device of claim 3 wherein the inner compression member distal mating end portion engaging surface and the inner guide channel member second end portion inner surface are operatively coupled by a melt bond comprising the melt-bonding material.

5. The device of claim 3 wherein the inner compression member distal mating end portion engaging surface and the inner guide channel member second end portion outer surface are operatively coupled by a melt bond comprising the melt-bonding material.

6. The device of claim 1 wherein the melt bond provides a pull apart strength of at least 5 newtons between the inner compression member distal mating end portion and the inner guide channel member second end portion.

7. The device of claim 1 wherein the melt-bonding material is selected from the group consisting of nylon, nylon natural tubing, polyether block amide, polyetheretherketone, thermoplastic, thermosetting plastic, resin, polypropylene, polyethylene, polyester, polyamide, ionomer, polycarbonate, polyphenylene oxide, polyphenylene sulphide, acrylic, liquid crystal polymer, polyolefin, polyethylene acrylate acid, polyvinylidene fluoride, polyvinyl, polyvinyl chloride, and polytetrafluorethylene.

8. The device of claim 1 further comprising a system proximal portion operatively coupled to the inner compression member proximal end, the system proximal portion further comprising a handle, wherein the elongate inner compression member extends at least about 50.0 cm from the handle to the inner guide channel member.

9. The device of claim 8 wherein the inner guide channel member further comprises a deployment device mounting region for deploying one of a stent, prosthetic valve device, and other implantable article inside a patient'"'"'s body.

10. An internal joint for use in a medical device, comprising:

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

an inner guide channel member having a first end portion, a second end portion, and defining a channel therebetween, the second end portion having inner and outer surfaces; and

the inner compression member mating end portion being implanted into the inner guide channel member second end portion between the inner guide channel member second end portion inner and outer surfaces.

11. The device of claim 10 wherein a tubular inner guide channel member comprises an entry port at or near the first end portion and an exit port at or near the second end portion, the ports being in fluid communication with the channel therebetween.

12. The device of claim 10 wherein the inner guide channel member second end portion comprises a melt-bonding material selected from the group consisting of nylon, nylon natural tubing, polyether block amide, polyetheretherketone, thermoplastic, thermosetting plastic, resin, polypropylene, polyethylene, polyester, polyamide, ionomer, polycarbonate, polyphenylene oxide, polyphenylene sulphide, acrylic, liquid crystal polymer, polyolefin, polyethylene acrylate acid, polyvinylidene fluoride, polyvinyl, polyvinyl chloride, and polytetrafluorethylene.

13. The device of claim 10 wherein the implanted inner compression member distal mating end portion forms inner and outer contacting interfaces in the inner guide channel member second end portion.

14. The device of claim 13 wherein a joint operatively couples the inner guide channel member second end portion contacting interfaces and the inner compression member distal mating end portion outer engaging surface.

15. The device of claim 14 wherein the joint comprises a melt-bonding material forming a melt bond that operatively couples the inner guide channel member second end portion contacting interfaces and the inner compression member distal mating end portion outer engaging surface.

16. The device of claim 10 wherein the implanted inner compression member distal mating end portion provides a pullout strength of at least 5 newtons relative to the inner guide channel member second end.

17. The device of claim 10 further comprising a system proximal portion operatively coupled to the inner compression member proximal end, the system proximal portion further comprising a handle, wherein the elongate inner compression member extends at least about 50.0 cm from the handle to the inner guide channel member.

18. The device of claim 17 wherein the inner guide channel member further comprises a deployment device mounting region for deploying one of a stent, prosthetic valve device, and other implantable article inside a patient'"'"'s body.

19. A delivery apparatus for rapid insertion delivery of self-expanding devices such as stents, prosthetic valve devices, and other implantable articles inside a patient'"'"'s body, comprising:

an elongate longitudinal flexible middle section delivery device extending intermediate a system proximal portion and a system distal portion, the middle section delivery device comprising an outer sheath and an inner compression member, the inner compression member having a distal mating end portion comprising an outer engaging surface;

an inner guide channel member arranged at the system distal portion, the inner guide channel member including a distal first end portion having an entry port and a proximal second end portion having an exit port and defining a guide channel therebetween, the inner guide channel member second end portion having inner and outer surfaces;

a joint operatively coupling the inner compression distal mating end portion and the inner guide channel member second end portion;

an outer guide channel member axially relative to the inner guide channel member, the outer guide channel member including a distal first end portion having an opening and proximal second end portion having an exit port, the first end opening and second end exit port defining a guide channel, and configured to have a stepped profile wherein the outer guide channel member comprises a first outer diameter intermediate the outer guide channel member first and second end portions and a second smaller outer diameter located at or near the outer guide channel member second end portion;

a self-expanding deployment device mounting region disposed at the system distal portion within the outer guide channel member, the mounting region including a proximal restraint, an inner guide channel member outside surface, and an outer guide channel member inner surface; and

a transition region arranged at the system distal portion proximal to the self-expanding deployment device mounting region, wherein the inner guide channel member exit port is in communication with the outer guide channel member exit port, and comprising a breech position opening located proximal to the inner guide channel member exit port.

20. The device of claim 19 wherein the joint comprises a melt-bonding material and comprises a melt bond.

21. The device of claim 20 wherein the melt bond operatively couples the inner compression member distal mating end engaging surface and the inner guide channel member second end portion inner surface.

22. The device of claim 20 wherein the melt bond operatively couples the inner compression member distal mating end engaging surface and the inner guide channel member second end portion outer surface.

23. The device of claim 19 wherein the joint comprises the inner compression member distal mating end portion being implanted into the inner guide channel member second end portion between the inner guide channel member second end portion inner and outer surfaces, the implanted inner compression member distal mating end portion forming inner and outer contacting interfaces in the inner guide channel member second end portion, the contacting interfaces being bonded to the inner compression member distal mating end portion outer engaging surface.

24. A method of making an internal joint for use in a delivery system configured for rapid insertion delivery of self-expanding devices such as stents, prosthetic valve devices, and other implantable articles inside a patient'"'"'s body, the method comprising the steps of:

providing an elongate internal compression member having a distal mating end portion having an outer engaging surface;

providing a tubular inner guide channel member having a first end portion and a second end portion, the first end portion including an entry port and the second end portion including an exit port, the ports defining a guide channel therebetween, the inner guide channel member second end portion having inner and outer surfaces;

melting the inner guide channel member second end portion;

implanting the inner compression member distal mating end portion into the melted inner guide channel member second end portion such that the inner compression member distal mating end portion is between the inner guide channel member second end portion inner and outer surfaces, the implanted inner compression member distal mating end portion forming inner and outer contacting interfaces in the inner guide channel member second end portion, the contacting interfaces being bonded to the inner compression member distal mating end portion outer engaging surface; and

cooling the implanted inner compression member distal mating end portion and the inner guide channel member second end portion to solid state.

25. The method of claim 24 further comprising the step of positioning a mandrel within at least a portion of the inner guide channel member guide channel.

26. The method of claim 25 further comprising the step of disposing a tool about at least a portion of the inner guide channel member second end.

27. The method of claim 26 further comprising the step of removing the mandrel.

28. The method of claim 26 further comprising the step of removing the tool.

29. The method of claim 24 further comprising the step of skiving the inner guide channel member second end portion.

30. The method of claim 24 further comprising the step of tapering the inner guide channel member.