Double lumen-type catheter

• US 6,579,261 B1
• Filed: 06/30/2000
• Issued: 06/17/2003
• Est. Priority Date: 06/19/1999
• Status: Expired due to Term

• Current Assignee: Fermatex Vascular Technologies, LLC (Spectrum Holdings III Corp.)
• Original Assignee: Adam Spence Corporation (Spectrum Holdings III Corp.)
• Inventors: Kawamura, Akira
• Primary Examiner(s): Denion, Thomas
• Assistant Examiner(s): TRAN, BINH Q
• Application Number:
  US09/608,609
• Time in Patent Office: 1,082 Days
• Field of Search: 604/30, 604/96.01, 604/104, 604/105, 604/106, 604/107, 604/109, 604/167.06, 604/264, 604/284, 604/523, 604/537, 604/164
• US Class Current: 604/105
• CPC Class Codes: A61M 2025/0004 having two or more concentrically arranged tubes for forming a concentric catheter system
• CPC Class Codes: A61M 2025/0031 characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment
• CPC Class Codes: A61M 2025/0034 characterized by elements which are assembled, connected or fused, e.g. splittable tubes, outer sheaths creating lumina or separate cores
• CPC Class Codes: A61M 2025/0039 characterized by lumina being arranged coaxially
• CPC Class Codes: A61M 25/003 characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves catheter tips A61M25/0067
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• CPC Class Codes: A61M 39/0613 with means for adjusting the seal opening or pressure A61M39/0693 takes precedence

Abstract

A double lumen-type catheter design which prevents damage to a child catheter and loosening of a stud valve of the double lumen-type catheter. A child catheter is housed inside a parent catheter so that it can freely slide, with the back end of the parent catheter joining with a front end of a Y-type connector with a branching path. The back end of the child catheter extends so that it passes through a back of the Y-type connector toward. A stud valve locks the back end of the child catheter at the back end of the Y-type connector. A cover covers the stud valve at the back end of the Y-type connector and the back end of the child catheter, and is attached so that it can be removed and replaced as needed.

Claims

1. A double lumen cathode comprising:

a) a parent catheter;

b) a child catheter housed in said parent catheter to freely slide within said parent catheter;

c) a Y-shape connector configured to receive a back end of said parent catheter and said child catheter, the back end of said child catheter extending through a back of said Y-shape connector;

d) a stud valve positioned at the back of said Y-shape connector and configured to receive the back end of said child catheter to lock the back end of said child catheter; and

e) a cover configured to be removable and replaceable and configured to cover said stud valve,

wherein a tip portion of said parent catheter and a tip portion of said child catheter are joined together.

2. A double lumen catheter according to claim 1 wherein said cover comprises

i) a first half portion and

ii) a second half portion.

3. A double lumen catheter according to claim 1 wherein:

(a) said stud valve comprises a knob including a plurality of first irregularities and

(b) said cover includes a plurality of second irregularities configured to engage with said first irregularities of said knob.

4. double lumen catheter according to claim 2 wherein:

(a) said stud valve comprises a knob including a plurality of first irregularities and

(b) said cover part includes a plurality of second irregularities configured to engage with said first irregularities of said knob.

5. A double lumen catheter according to claim 1 wherein:

(a) said parent catheter comprises a plurality of lengthwise slits to form a plurality of lengthwise strips between respective of said plurality of slits and

(b) wherein movement of said child catheter causes said plurality of strips to spread open and come together.

6. A double lumen catheter according to claim 5 wherein said plurality of strips are slanted in a lengthwise direction.

7. A double lumen catheter according to claim 6 wherein said parent catheter further comprises a reinforcing material placed on said plurality of strips.

8. A double lumen cathode comprising:

a) parent catheter means;

b) child catheter means housed in said parent catheter means for freely sliding within said parent catheter means;

c) connecting means for receiving a back end of said parent catheter means and said child catheter means, the back end of said child catheter means extending through a back of said connector means;

d) locking means positioned at the back of said connector means for receiving the back end of said child catheter means and for locking the back end of said child catheter means; and

e) cover means for covering said locking means,

(f) said parent catheter means comprises means for forming a plurality of lengthwise strips and

(g) movement of said child catheter means causes said plurality of strips to spread open and come together.

9. A double lumen catheter according to claim 8 wherein said parent catheter means further comprises reinforcing material placed on said plurality of strips.

10. A double lumen cathode comprising:

a) a parent catheter;

b) a child catheter housed in said parent catheter to freely slide within said parent catheter;

c) a Y-shape connector configured to receive a back end of said parent catheter and said child catheter, the back end of said child catheter extending through a back of said Y-shape connector;

d) a stud valve positioned at the back of said Y-shape connector and configured to receive the back end of said child catheter to lock the back end of said child catheter; and

e) a cover configured to be removable and replaceable and configured to cover said stud valve,

(f) said stud valve comprises a knob including a plurality of first irregularities and

(g) said cover includes a plurality of second irregularities configured to engage with said first irregularities of said knob.

11. A double lumen catheter according to claim 10 wherein said cover comprises

i) a first half portion and

ii) a second half portion.

12. A double lumen catheter according to claim 10 wherein a tip portion of said parent catheter and a tip portion of said child catheter are joined together.

13. A double lumen catheter according to claim 12 wherein:

(a) said parent catheter comprises a plurality of lengthwise slits to form a plurality of lengthwise strips between respective of said plurality of slits and

(b) wherein movement of said child catheter causes said plurality of strips to spread open and come together.

14. A double lumen catheter according to claim 13 wherein said plurality of strips are slanted in a lengthwise direction.

15. A double lumen catheter according to claim 14 wherein said parent catheter further comprises a reinforcing material placed on said plurality of strips.

16. A double lumen cathode comprising:

a) parent catheter means;

b) child catheter means housed in said parent catheter means for freely sliding within said parent catheter means;

c) connector means for receiving a back end of said parent catheter means and said child catheter means, the back end of said child catheter means extending through a back of said connector means;

d) locking means positioned at the back of said connector means for receiving the back end of said child catheter means and for locking the back end of said child catheter means; and

e) cover means for covering said locking means,

f) wherein a tip portion of said parent catheter means and a tip portion of said child catheter means are joined together.

17. A double lumen catheter according to claim 16 wherein:

g) said parent catheter means comprises means for forming a plurality of lengthwise strips and

h) movement of said child catheter means causes said plurality of strips to spread open and come together.

18. A double lumen catheter according to claim 17 wherein said parent catheter means further comprises reinforcing material placed on said plurality of strips.