# US 5,700,241 A · Cross-sectional tissue textured surfaces

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- Number: US 5,700,241 A
- Document ID: US5700241A
- Status: Granted
- Kind: A
- Application number: 08/628,591
- Filed: 1996-04-04
- Granted: 1997-12-23
- Earliest claimed: 1996-04-04
- Assignees: Wisconsin Alumni Research Foundation
- Inventors: Steven L. Goodman
- Web page: https://patentgrep.com/patent/US5700241A

## CPC

- A61M 39/0247: {Transcutaneous or percutaneous access sites to the inside of the body}
- A61F 2/0077: {Special surfaces of prostheses, e.g. for improving ingrowth (A61F2/30767 takes precedence)}
- A61F 2/06: Blood vessels
- A61F 2/105: {Skin implants, e.g. artificial skin}
- A61M 25/0017: {specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections}
- Y10T 428/1352: Polymer or resin containing [i.e., natural or synthetic]
- Y10T 428/1397: Single layer [continuous layer]
- Y10T 428/24041: Discontinuous or differential coating, impregnation, or bond
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Medical devices, such as percutaneous access devices and other implants, are disclosed which have synthetic biotextured surfaces. The peripheral outer surfaces of these items are provided with either a positive or an inverse representation of transverse surfaces using microcasting techniques.

## Claims

### Claim 1

A percutaneous access device of a type suitable to be inserted through human skin, the device comprising a housing having (a) a through bore, and (b) a peripheral outer surface that essentially replicates a portion of a transverse mammalian epithelial surface.

### Claim 2 (depends on 1)

The device of claim 1, wherein the outer surface is essentially an inverse representation of a cross section through skin.

### Claim 3 (depends on 2)

The device of claim 2, wherein the outer surface is made from plastic.

### Claim 4 (depends on 1)

The device of claim 1, wherein the outer surface is essentially a positive representation of a cross section through skin.

### Claim 5 (depends on 4)

The device of claim 4, wherein the outer surface is made from plastic.

### Claim 6 (depends on 1)

A method of creating the claim 1 device, comprising:
exposing a transverse mammalian epithelial surface of tissue;
agitating a liquid against the exposed transverse epithelial surface;
covering the exposed transverse epithelial surface with a casting material and allowing the casting material to harden against the surface; and
removing tissue from the hardened casting material.

### Claim 7 (depends on 6)

The method of claim 6, wherein human skin provides a mold for the casting material.

### Claim 8

A medical implant of a type suitable to be implanted in a mammalian site, the mammalian site being selected from the group consisting of mammalian skin and mammalian organ, the implant comprising a body having a surface that essentially replicates a portion of a transverse surface of such a site.

### Claim 9 (depends on 8)

The implant of claim 8, wherein the surface is a peripheral outer surface.

### Claim 10 (depends on 9)

The implant of claim 9, wherein the outer surface is essentially an inverse representation of a cross section through such a site.

### Claim 11 (depends on 10)

The device of claim 10, wherein the outer surface is made from plastic.

### Claim 12 (depends on 9)

The device of claim 9, wherein the outer surface is essentially a positive representation of a cross section through such a site.

### Claim 13 (depends on 12)

The device of claim 12, wherein the outer surface is made from plastic.