Temporary retention device

• US 10,737,068 B2
• Filed: 01/30/2018
• Issued: 08/11/2020
• Est. Priority Date: 09/20/2002
• Status: Active Grant

• Current Assignee: Interrad Medical, Inc.
• Original Assignee: Interrad Medical, Inc.
• Inventors: Rosenberg, Michael S., Claude, Timothy J.
• Primary Examiner(s): Severson, Ryan J.
• Application Number:
  US15/883,988
• Publication Number:
  US 20180161545A1
• Time in Patent Office: 924 Days
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 2017/3484 Anchoring means, e.g. spreading-out umbrella-like structure
• CPC Class Codes: A61M 2025/0293 Catheter, guide wire or the like with means for holding, centering, anchoring or frictionally engaging the device within an artificial lumen, e.g. tube natural lumen, e.g. vessels A61M25/04
• CPC Class Codes: A61M 25/02 Holding devices, e.g. on the body
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence

Abstract

A retention device for anchoring indwelling catheters, sheath introducers, feeding tubes, ostomy bags or other medical devices beneath the skin of a patient includes an deployable section coupled to a medical device; following introduction into a patient, the deployable section is subcutaneously deployed, securely anchoring the device and coupled medical device for the duration of treatment.

Claims

1. A device for securing a catheter relative to a skin opening of a patient that is occupied by the catheter, comprising:

a catheter retainer body including a longitudinal channel configured to releasably engage with an outer surface of an external portion of a catheter; and

a subcutaneous anchor assembly in contact with the retainer body and spaced apart from the longitudinal channel of the retainer body, including;

a first flexible anchor having a first free end that terminates at a non-sharp tip, and a second flexible anchor having a second free end that terminates at a non-sharp tip, the second flexible anchor contemporaneously insertable with the first flexible anchor through a same skin opening as the catheter;

wherein the first and second flexible anchors are movable between a first position in which the first and second flexible anchors are positioned for insertion through the same skin opening to a subcutaneously deployed position in which the first free end of the first anchor and the second free end of the second anchor extend outwardly away from one another in generally opposite directions and are configured to engage tissue along an underside of the skin layer.

2. The device of claim 1, wherein the subcutaneous anchor assembly is movable relative to the catheter retainer body.

3. The device of claim 1, wherein the first anchor includes a first convexly bowed portion extending lengthwise toward the free end of the first anchor such that the first convexly bowed portion faces proximally toward the catheter retainer body, and wherein the second anchor includes a second convexly bowed portion extending lengthwise toward the free end of the second anchor such that the second convexly bowed portion faces proximally toward the catheter retainer body.

4. The device of claim 1, wherein the first and second flexible anchors are capable of repeatedly moving between the first position and the subcutaneously deployed position.

5. The device of claim 1, wherein a space between the free ends of the first flexible anchor when the first and second flexible anchors are positioned in the subcutaneously deployed position is greater than the space between the free ends of the first flexible anchor when the first and second flexible anchors are positioned in the first position.

6. The device of claim 1, further comprising a longitudinal extender apparatus secured to the catheter retainer body, and said first and second flexible anchors extending outwardly away from a distal region of the longitudinal extender apparatus.

7. The device of claim 6, wherein the longitudinal extender apparatus comprises a rod.

8. The device of claim 7, wherein the rod is actuatable relative to the catheter retainer body so as to flexibly adjust the first and second flexible anchors from the first position to the subcutaneously deployed position.

9. The device of claim 6, wherein the longitudinal extender assembly is housed inside the catheter retainer body.

10. The device of claim 6, wherein the longitudinal extender apparatus is laterally offset from the channel of the retainer body.

11. The device of claim 1, wherein each of the first and second flexible anchors is deployable from a corresponding port along an exterior of the retainer body.

12. A device for securing a medical device relative to a skin opening of a patient that is occupied by the medical device, comprising:

a medical device retainer body including a longitudinal channel configured to releasably engage with an outer surface of an external portion of a medical device; and

a subcutaneous anchor assembly in contact with the retainer body and spaced apart from the longitudinal channel of the retainer body, including;

a first flexible anchor having a first free end that terminates at a non-sharp tip, and

a second flexible anchor having a second free end that terminates at a non-sharp tip, the second flexible anchor contemporaneously insertable with the first flexible anchor through a same skin opening as the medical device, the first and second flexible anchors movable between a first position in which the first and second flexible anchors are positioned for insertion through the same skin opening to a subcutaneously deployed position in which the first free end of the first anchor and the second free end of the second anchor extend outwardly away from one another in generally opposite directions and are configured to engage tissue along an underside of the skin layer;

wherein when the medical device is releasably engaged by the retainer body and inserted through a skin puncture, the first and second flexible anchors are insertable through the same skin puncture to subcutaneously deploy the first and second flexible anchors for tissue engagement along the underside of the skin layer.

13. The device of claim 12, wherein the first and second flexible anchors are capable of repeatedly moving between the first position in which the first and second flexible anchors are arranged for insertion through the same skin puncture as the medical device and the subcutaneously deployed position in which the first and second flexible anchors extend outwardly away from one another in generally opposite directions.

14. The device of claim 13, wherein the subcutaneous anchor assembly is movable relative to the medical device retainer body.

15. The device of claim 14, wherein a space between the free ends of the first flexible anchor when the first and second flexible anchors are positioned in the subcutaneously deployed position is greater than the space between the free ends of the first flexible anchor when the first and second flexible anchors are positioned in the first position.

16. The device of claim 12, wherein the first anchor includes a first convexly bowed portion extending lengthwise toward the free end of the first anchor such that the first convexly bowed portion faces proximally toward the medical device retainer body, and wherein the second anchor includes a second convexly bowed portion extending lengthwise toward the free end of the second anchor such that the second convexly bowed portion faces proximally toward the medical device retainer body.

17. The device of claim 12, further comprising a longitudinal extender apparatus secured to the medical device retainer body, and said first and second flexible anchors extending outwardly away from a distal region of the longitudinal extender apparatus.

18. The device of claim 17, wherein the longitudinal extender apparatus comprises a rod.

19. The device of claim 18, wherein the rod is actuatable relative to the medical device retainer body so as to flexibly adjust the first and second flexible anchors from the first position to the subcutaneously deployed position.

20. The device of claim 19, wherein the longitudinal extender assembly is housed inside the medical device retainer body.