# US 2014/0155991 A1 · Prosthetic valve implant site preparation techniques

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0155991 A1
- Document ID: US20140155991A1
- Status: Published application
- Kind: A1
- Application number: 13/910,969
- Filed: 2013-06-05
- Published: 2014-06-05
- Earliest claimed: 2006-06-20
- Assignees: Phoenix Biomedical Corporation
- Applicants: Phoenix Biomedical, Inc.
- Inventors: David C. FORSTER; Brian BECKEY; Brandon WALSH; Scott HENEVELD
- Web page: https://patentgrep.com/patent/US20140155991A1

## CPC

- A61F 2/2433: {using balloon catheter}
- A61B 17/320016: {Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes (A61B10/0233, A61B17/29, A61B17/3207 take precedence)}
- A61B 17/22012: {in direct contact with, or very close to, the obstruction or concrement (for removing obstructions in blood vessels by laser A61B18/245)}
- A61B 2017/00876: {magnetic}
- A61B 2017/22097: {Valve removal in veins}
- A61B 2017/22098: {Decalcification of valves}
- A61B 2017/320093: {additional movable means performing cutting operation}
- A61B 2017/320095: {with sealing or cauterizing means}
- A61F 2/2427: {Devices for manipulating or deploying heart valves during implantation}
- 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)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Prosthetic valves implantation methods and systems, especially as related to preparing the native site of a native stenotic or incompetent aortic valve for receipt of a prosthetic replacement valve are described. The subject tools and associated site preparation techniques may be employed in percutaneous aortic valve replacement procedures.

## Claims

### Claim 1

An apparatus for the modification of tissue in a patient, comprising:
an elongate shaft; and
a tissue modification device coupled with the elongate shaft, the tissue modification device configured to mechanically modify target tissue.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the tissue modification device comprises:
a first rigid element; and
a second rigid element, wherein the first and second rigid elements are configured to transition between a first state, where the rigid elements are in spaced relation to each other, and a second state, where the rigid elements are biased towards each other.

### Claim 3 (depends on 2)

The apparatus of claim 2, wherein the first rigid element is configured to emit an electromagnetic field.

### Claim 4 (depends on 3)

The apparatus of claim 3, wherein the second rigid elements composed of a ferromagnetic material.

### Claim 5 (depends on 3)

The apparatus of claim 3, wherein the second rigid element is a magnet.

### Claim 6 (depends on 2)

The apparatus of claim 2, wherein at least one of the first and second rigid elements is coupled to a deflectable arm member.

### Claim 7 (depends on 6)

The apparatus of claim 6, wherein the first and second rigid elements are mechanically biased away from each other in the first state.

### Claim 8 (depends on 6)

The apparatus of claim 6, wherein the first and second rigid elements are magnetically biased away from each other in the first state.

### Claim 9 (depends on 2)

The apparatus of claim 2, wherein the first rigid element comprises a textured feature on a surface opposing the second rigid element.

### Claim 10 (depends on 1)

The apparatus of claim 1, wherein the tissue modification device comprises at least one weight configured to rotate about the elongate shaft at a radial distance from the shaft.

### Claim 11 (depends on 10)

The apparatus of claim 10, wherein the weight is a first weight, the radial distance is a first radial distance and the tissue modification device comprises a second weight located opposite the first weight, the second weight configured to rotate about the elongate shaft at a second radial distance from the shaft.

### Claim 12 (depends on 11)

The apparatus of claim 11, wherein the first and second weights are each coupled to the elongate shaft by way of separate arm members.

### Claim 13 (depends on 12)

The apparatus of claim 12, wherein the arm members are coupled to a rotatable hub.

### Claim 14 (depends on 11)

The apparatus of claim 11, wherein the first and second radial distance separating the first and second weights from the shaft is variable.

### Claim 15 (depends on 11)

The apparatus of claim 11, wherein the tissue modification device further comprises an expandable sheath over the first and second weights.

### Claim 16 (depends on 15)

The apparatus of claim 15, wherein the tissue modification device further comprises a textured surface on the expandable sheath.

### Claim 17 (depends on 15)

The apparatus of claim 15, wherein the tissue modification device further comprises a reinforcement over the expandable sheath.

### Claim 18 (depends on 10)

The apparatus of claim 10, wherein the tissue modification device further comprises an expandable sheath over the weight.

### Claim 19 (depends on 18)

The apparatus of claim 18, wherein the tissue modification device further comprises a textured surface on the expandable sheath.

### Claim 20 (depends on 18)

The apparatus of claim 18, wherein the tissue modification device further comprises a reinforcement over the expandable sheath.