# US 2016/0256192 A1 · Hip obturator and method for atraumatic hip access

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- Number: US 2016/0256192 A1
- Document ID: US20160256192A1
- Status: Published application
- Kind: A1
- Application number: 15/157,610
- Filed: 2016-05-18
- Published: 2016-09-08
- Earliest claimed: 2012-05-25
- Assignees: DePuy Mitek, LLC
- Applicants: DePuy Mitek, LLC
- Inventors: Benjamin Cleveland; Bethany F. Grant; Jeffery Tolonen
- Web page: https://patentgrep.com/patent/US20160256192A1

## CPC

- A61B 17/3211: Surgical scalpels, knives; Accessories therefor
- A61B 17/1666: {for the acetabulum}
- A61B 17/3209: Incision instruments
- A61B 1/317: for bones or joints, e.g. osteoscopes or arthroscopes
- A61B 17/1746: {for the acetabulum}
- A61B 17/320016: {Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes (A61B10/0233, A61B17/29, A61B17/3207 take precedence)}
- A61B 17/32053: {Punch like cutting instruments, e.g. using a cylindrical or oval knife (A61B17/326 takes precedence; trepans A61B17/1695)}
- A61B 17/3423: {Access ports, e.g. toroid shape introducers for instruments or hands (access sites for liquids A61M39/0247)}
- A61B 17/3496: {Protecting sleeves or inner probes; Retractable tips (for protecting body piercing guide needles A61M25/0612)}
- A61B 2017/00486: {Adaptors for coupling parts with incompatible geometries}
- A61B 2017/22038: {with a guide wire}
- A61B 2017/32113: {with extendable or retractable guard or blade}
- A61B 2017/3454: {Details of tips}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

An obturator provides access to a joint through a capsule surrounding the joint. A distal end of the obturator has a first distal location with a first width dimension and a second distal location with a second width dimension, wherein the second distal location is proximal to the first distal location and the second width dimension greater than the first width dimension. A retractable blade can extend from the obturator to be exposed between the first distal location and the second distal location.

## Claims

### Claim 1

A hip arthroscopy obturator for penetrating a hip capsule, the obturator comprising:
an axially elongated body having a distal end;
a distal tip of the body at the body distal end, the distal tip having an outer diameter narrower than a body distal end diameter forming a distally facing abutment therebetween;
a cannulation through the body to the distal end; and
a retractable blade comprising a cutting edge and having a retracted position in which the cutting edge is disposed in the body and an extended position in which the cutting edge extends out of the body at the distal end.

### Claim 2 (depends on 1)

A hip arthroscopy obturator according to claim 1 wherein the blade is biased toward the retracted position.

### Claim 3 (depends on 1)

A hip arthroscopy obturator according to claim 1 and further comprising a manually engageable actuator positioned proximal of the body distal end and connected to the blade whereby to allow a user to extend the blade to the extended position.

### Claim 4 (depends on 1)

A hip arthroscopy obturator according to claim 1 wherein the body has a central longitudinal axis and the cannulation is offset laterally therefrom at the distal end.

### Claim 5

(canceled)

### Claim 6 (depends on 1)

A hip arthroscopy obturator according to claim 1 wherein the blade is movable from the retracted position to the extended position through the abutment.

### Claim 7 (depends on 1)

A hip arthroscopy obturator according to claim 1 wherein when the blade is in the extended position the cutting edge does not extend distally beyond the distal tip nor laterally beyond the body distal end diameter.

### Claim 8 (depends on 4)

A hip arthroscopy obturator according to claim 4 wherein the cannulation extends through the distal tip.

### Claim 9 (depends on 1)

A hip arthroscopy obturator according to claim 1 and further comprising a guide wire extending through the cannulation.

### Claim 10 (depends on 1)

A hip arthroscopy obturator according to claim 1 and further comprising a cannula having an axial lumen therethrough, the obturator being received within the lumen.

### Claim at position 11

11-17. (canceled)