# US 10,369,014 B2 · Methods and instruments for use in minimally invasive hip surgery

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

- Number: US 10,369,014 B2
- Document ID: US10369014B2
- Status: Granted
- Kind: B2
- Application number: 15/401,193
- Filed: 2017-01-09
- Published: 2017-05-11
- Granted: 2019-08-06
- Earliest claimed: 2015-11-09
- Applicants: Microport Orthopedics Holdings Inc.
- Inventors: Brad L. Penenberg; Irina Timmerman; Christopher R. McKnett
- Web page: https://patentgrep.com/patent/US10369014B2

## CPC

- A61F 2/4609: {of acetabular cups}
- A61B 17/00234: {for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)}
- A61B 17/1746: {for the acetabulum}
- A61B 17/92: Impactors or extractors, e.g. for removing intramedullary devices {(insertion or extraction of artificial joints A61F2/4603)}
- A61B 17/1666: {for the acetabulum}
- A61F 2/34: Acetabular cups
- A61F 2002/30233: {Stepped cylinders, i.e. having discrete diameter changes}
- A61F 2002/30364: {Rotation about the common longitudinal axis}
- A61F 2002/30367: {with additional means for preventing said rotation}
- A61F 2002/30487: {Circumferential cooperating grooves and beads on cooperating lateral surfaces of a mainly longitudinal connection}
- A61F 2002/3054: {about a connection axis or implantation axis for selecting any one of a plurality of radial orientations between two modular parts, e.g. Morse taper connections, at discrete positions, angular positions or continuous positions}
- A61F 2002/30617: {Visible markings for adjusting, locating or measuring}
- A61F 2002/30787: {inclined obliquely with respect to each other}
- A61F 2002/3401: {with radial apertures, e.g. radial bores for receiving fixation screws}
- A61F 2002/3403: {Polar aperture}
- A61F 2002/4629: {connected to the endoprosthesis or implant via a threaded connection}
- A61F 2002/4635: {using minimally invasive surgery}
- A61F 2002/4681: {by applying mechanical shocks, e.g. by hammering}
- A61F 2220/0025: Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F 2220/0033: made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
- A61F 2230/0069: cylindrical
- A61F 2250/0097: Visible markings, e.g. indicia
- 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

A method of providing a minimally invasive hip arthroplasty in conjunction with a main incision formed through a patient's skin and soft tissue in the patient's hip, including providing an instrument having a main body and an arrangement for guiding the formation of a portal incision and a small path to the patient's acetabulum along an impaction axis. A trocar is placed through a guide ring on an arm of the instrument to form the portal incision and small path. Impaction of an acetubular shell is carried out along the impaction axis thus formed.

## Claims

### Claim 1

A method of providing a minimally invasive hip arthroplasty in conjunction with a main incision formed through a patient's skin and soft tissue in said patient's hip, said main incision providing primary access to an acetabulum of said patient, comprising:
providing an instrument, the instrument including a main body,
the main body including a lengthwise portion extending to a lower end of the main body,
an angled sleeve member formed on said lower end of said main body, said angled sleeve member having a sleeve bore therethrough,
an arm, the arm having a straight first arm portion, the first arm portion extending from the main body below the handle, and a straight second portion extending from the first arm portion, the second portion angled downwardly relative to the first arm portion,
a guide ring formed on an end of the second arm portion, the guide ring having a guide bore therethrough, and the guide bore axially aligned with the sleeve bore of the angled sleeve member to thereby form an impaction axis aligned with the guide bore and the sleeve bore,
inserting the angled sleeve member through said main incision and into said acetabulum,
providing a trocar, and, while said angled sleeve member is in said acetabulum, inserting the trocar through the guide bore until a tip of the trocar approaches said patient's skin,
pushing the trocar through said skin and said soft tissue of said patient until the tip of the trocar comes into proximity with the angled sleeve in said acetabulum, and
withdrawing the trocar from the instrument, thereby leaving a small portal incision in said patient's skin and a small path in said soft tissue between said small portal and said acetabulum.

### Claim 2 (depends on 1)

The method of claim 1, further comprising providing a guide sleeve for the guide bore of the guide ring, said guide sleeve having an internal bore therethrough for receiving the trocar, and inserting the guide sleeve in the guide bore prior to the step of inserting the trocar in the guide bore.

### Claim 3 (depends on 2)

The method of claim 2, wherein an outer diameter of said guide sleeve closely matches said guide bore of the guide ring, and a diameter of said internal bore of said guide sleeve closely matches an outer diameter of the trocar.

### Claim 4 (depends on 2)

The method of claim 2, further comprising removing said guide sleeve from said guide ring after forming the small path with the trocar.

### Claim 5 (depends on 1)

The method of claim 1, further comprising mounting an acebular component on the angled sleeve member prior to the step of inserting the angled sleeve member through said main incision and into said acetabulum, and using the acetabular component to orient the guide bore relative to said acetabulum.

### Claim 6 (depends on 5)

The method of claim 5, further comprising providing an impacting instrument, inserting the impacting instrument through the guide bore of the guide ring, the small portal incision, and the small path until the impacting instrument is in position for impacting the acetabular component.

### Claim 7 (depends on 6)

The method of claim 6, further comprising impacting the impacting instrument with an impactor.

### Claim 8 (depends on 7)

The method of claim 7, further comprising, during the step of impacting, holding the instrument to make sure the blows continue to be imparted along the impaction axis.

### Claim 9 (depends on 1)

The method of claim 1, wherein the lengthwise portion of the main body is straight.

### Claim 10 (depends on 1)

The method of claim 1, further comprising a handle on an opposite upper end of the main body.

### Claim 11 (depends on 1)

The method of claim 1, wherein the first arm portion of the arm extends perpendicularly from the main body.