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1. (WO2019006158) GUIDEWIRE ACCESS SLEEVE
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We Claim.:

1. A vascular access sleeve comprising:

a tubular sleeve body extending along a longitudinal axis of the access sleeve, the sleeve body having first and second open ends:

a first lumen extending along the longitudinal axis between the first and second open ends of the sleeve body; and

a lateral opening in the sleeve body connecting the first lumen to an outer surface of the sleeve body,

wherein the lateral opening of the access sleeve is configured to be selectively expanded to attach the access sleeve to a medical device.

2. The access sleeve of claim 1, wherein the sleeve body comprises a second lumen extending along the longitudinal axis between the first and second open ends of the sleeve body, the second lumen being sized and shaped for passage of a guidewire.

3. The access sleeve of claim 1, wherein the opening extends linearly between the first and second open ends of the sleeve body and is parallel to the longitudinal axis of the fi rst lumen of the sleeve body.

4. The access sleeve of claim 1 , wherein the opening extends in a helical spiral between the first and second open ends of the sleeve body.

5. The access sleeve of claim 1, wherein the sleeve comprises an inner surface fabricated with an irregular geometry to minimize contact between the sleeve body and the medical device.

6. The access sleeve of claim 5, wherein the inner surface comprises at least one recess 5 extending between the first and second open ends of the tubular sleeve body.

7. The access sleeve of claim 1 , further comprising a hub attached to the second open end of the tubular sleeve body.

8. The access sleeve of claim 1 , further comprising a tip at the first open end of the tubular sleeve body, the tip having inner surface defining a tip lumen that extends between proximal and distal ends of the tip, the tip lum en being in fluid communication with the first lumen of the sleeve body.

9. Tire access sleeve of claim 1 , wherem an outer diameter of the proximal end of the tip is larger than an outer diameter of the distal end of the tip such that the tip is tapered along its proximal-to-distal length.

10. The access sleeve of claim 1, wherein a diameter of the inner surface at the proximal end of the tip is larger than a diameter of the inner surface of the tip at the distal end.

11. The access sleeve of claim 1, wherein a diameter of the inner surface at the proximal end of the tip is equal to a diameter of the inner surface at the distal end of the tip.

12. The access sleeve of claim 1, wherein the sleeve body comprises a first material and the tip comprises a second material.

13. The access sleeve of claim 12, wherein the first material is substantially stiffer than the second material, and the second material is substantially more elastic than the first material.

14. The access sleeve of claim 12, wherein the first material comprises at least one of: high-density polyethylene (HDPE) material, a medium-density polyethylene (MDPE) material, a low-density polyethylene (LDPE) material, a polyether block amide (such as PEBA), a material with an elastic modulus of about 8 l-307MPa, and a material with a yield strain of 20-30%.

15. The access sleeve of claim 12, wherein the second material comprises at least one of: ethylene -vinyl acetate (EVA), styrene-butadiene copolymer (SBC), synthetic rubber, an elastomer, an elastic material, a material with an eiastic modulus of about 1 ,6ksi, and a material with a yield strain in excess of 200%.

16. The access sleeve of claim 1, wherein the hub any one of a high-density polyethylene (HDPE) material, a medium-density polyethylene (MDPE) material, a low-density polyethylene (LDPE) material, polyether ether ketone (PEEK), and a polyether block amide (such as PEBA).

17. An access system comprising:

a medical device configured for insertion into an artenotomy of a patient, the medical device having a first end and a second end; and

an access sleeve having a

a tubular sleeve body extending along a longitudinal axis, the sleeve body having first and second open ends;

a first lumen extending along the longitudinal axis between the first and second open ends of the sleeve body; and

a lateral opening in the sleeve body connecting the first lumen to an outer surface of the sleeve body, the lateral opening comprising a slit that extends along the length of the sleeve body

wherein the access sleeve is configured to be selectively expanded to attach the access sleeve to the medical device such that the medical device is positioned in the first lumen and the first lumen allows for the passage of at least the medical device.

18. The access system of claim 17, wherein the access sleeve body has a cross-sectional shape that is substantially C-shaped.

19. The access system of claim 17, wherein the medical device includes a catheter onto which the access sleeve attaches.

20. The access system of claim 18, wherein the access sleeve is configured to slide distally along the catheter and be advanced into the arteriotomy while still attached to the catheter.

21. Hie access system of claim 17, wherein the sleeve further comprises a second lumen extending along the longitudinal axis between the first and second open ends of the sleeve body for passage of a guidewire.

22. The access system of claim 17, wherein the sleeve comprises an inner surface having an irregular geometry to minimize contact between the sleeve body and the medical device.

23. The access system of claim 22, wherein the inner surface comprises at least one recess extending between the first and second open ends of the tubular sleeve body.

24. The access system of claim 17, further comprising a hub attached to the second open end of the tubular sleeve body.

25. A method of attaching an access sleeve to a medical device positioned within a vascular site of a patient such that the medical device comprises a first section positioned within the vasculature and a second section positioned external to the patient, the method comprising: attaching the access slee ve to the second portion of the medical device via a first lumen; positioning the access sleeve within die vasculature by sliding the access sleeve along the medical device where the medical device serves as a rail for guiding the access sleeve such that 20 the access sleeve is in the proximity of the first portion of the medical device when positioned within the vasculature; and

removing the medical device.

26. The method of claim 25, wherein the access sleeve further comprises a second lumen with a stylet, and the method further comprises:

removing the stylet from the second lumen once the access sleeve is positioned within the vasculature.

27. The method of claim 26, further comprising:

inserting a guidewire into the second lumen of the access sleev e such that a distal portion of the guidewire extends beyond the access sleeve and into the vasculature.

28. The method of claim 27, further comprising:

removing the access sleeve while maintaining the position of the guidewire in the vasculature.

29. The method of claim 28, further comprising:

removing the medical device from the vascular site.

30. The method of claim 27, further comprising:

removing the access sleeve while maintaining the position of the guidewire in the vasculature; and

removing the medical device from the vascular site.