# US 10,245,157 B2 · Anchoring device for a spinal implant, spinal implant and implantation instrumentation

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- Number: US 10,245,157 B2
- Document ID: US10245157B2
- Status: Granted
- Kind: B2
- Application number: 15/937,845
- Filed: 2018-03-27
- Published: 2018-10-18
- Granted: 2019-04-02
- Earliest claimed: 2014-01-30
- Assignees: LDR Medical
- Applicants: LDR Medical
- Inventors: Hervé Chataigner; Craig Chebuhar; Pierre Bernard; Hervé Dinville; Emmanuel Bougere
- Web page: https://patentgrep.com/patent/US10245157B2

## CPC

- A61F 2/4455: {for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages (intervertebral discs A61F2/442)}
- A61F 2/4425: {made of articulated components}
- A61F 2/447: {substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section}
- A61F 2/4611: {of spinal prostheses}
- A61F 2/4637: {for connecting or disconnecting two parts of a prosthesis}
- A61F 2002/30136: {undulated or wavy, e.g. serpentine-shaped or zigzag-shaped}
- A61F 2002/30161: {arrow-shaped}
- A61F 2002/30331: {made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit}
- A61F 2002/30373: {with additional means for preventing said translation}
- A61F 2002/30401: {with additional means for preventing or locking said sliding}
- A61F 2002/30476: {locked by an additional locking mechanism}
- A61F 2002/30492: {using a locking pin}
- A61F 2002/305: {Snap connection}
- A61F 2002/30517: {using a locking plate}
- A61F 2002/30579: {with mechanically expandable devices, e.g. fixation devices}
- A61F 2002/30604: {modular}
- A61F 2002/30772: {Apertures or holes, e.g. of circular cross section}
- A61F 2002/30782: {inclined obliquely}
- A61F 2002/30841: {Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes}
- A61F 2002/30879: {Ribs}
- A61F 2002/30889: {Arcuate pegs}
- A61F 2002/30904: {serrated profile, i.e. saw-toothed}
- A61F 2002/4641: {for disconnecting}
- 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)

## Abstract

Anchoring devices for rachidian implants, implants, surgical instruments, and surgical systems and methods are disclosed. In some embodiments, an anchor comprises a stiff plate with a longitudinal axis, configured for penetration of its anterior end into a vertebral surface while its posterior end remains engaged with the implant. An implant may include a locking mechanism for the anchor. An anchor may include an abutment configured to abut a complementary abutment of an implant. In some configurations, inserting an anchor in a passage of an implant may displace a locking mechanism, which may resile and lock the anchor in the implant with complementary abutments of the anchor and implant abutting.

## Claims

### Claim 1

A surgical instrument for implanting a spinal implant and attaching the implant to a vertebra with an anchoring device, the instrument comprising an implant holder elongated along a longitudinal axis extending between a grasping end and a pushing end and comprising a head having an implant connector, an implant facing surface, and a passage extending through the head and opening on the implant facing surface; an impactor elongated along a longitudinal axis extending between a posterior end and an anterior end of the impactor; the anterior end comprising a branch disposable into the implant holder passage; and an anchor guiding surface configured to guide an anchor through the head and into an implant.

### Claim 2 (depends on 1)

The surgical instrument of claim 1 further comprising a first loader slidable in the head on which the anchor guiding surface is disposed.

### Claim 3 (depends on 2)

The surgical instrument of claim 2 further comprising a second loader, with the impactor comprising two branches configured to push the first loader and second loader simultaneously.

### Claim 4 (depends on 1)

The surgical instrument of claim 1 further comprising an anchor extraction tool configured with a release configured to unlock an anchor from an implant.

### Claim 5

A combination for treating a spine, the combination comprising:
an anchor comprising
an anterior end configured for penetration of a vertebral surface,
a posterior end configured for impacting the anchor into a vertebra,
a longitudinal axis extending between the anterior end and the posterior end, and
a lock abutment surface disposed between the anterior end and the posterior end and oriented angularly to the longitudinal axis;
a spinal implant comprising
an access surface configured to be accessible with the implant implanted in a spine;
a vertebral contact surface, and
a passage extending from the access surf ace to the vertebral contact surface defining an insertion axis for the anchor; and
a lock comprising
an anchor abutment surface disposable along the passage and orientable angularly to the insertion axis, with the anchor abutment surface configured to operatively mate with the lock abutment surface of the anchor, and
a retainer extending away from the anchor abutment surface; and
with the anchor and lock together having an installed configuration in which the anchor is inserted in the passage with the anchor abutment surface of the lock and the lock abutment surface of the anchor mated and with the retainer disposed in the spinal implant.

### Claim 6 (depends on 5)

The combination of claim 5 in which the anchor has a cross section oriented generally perpendicularly to the longitudinal axis that defines an L shape.

### Claim 7 (depends on 5)

The combination of claim 5 in which the anchor has a cross section oriented generally perpendicularly to the longitudinal axis that defines a V shape.

### Claim 8 (depends on 5)

The combination of claim 5 in which the anchor has a cross section oriented generally perpendicularly to the longitudinal axis that defines a T shape.

### Claim 9 (depends on 5)

The combination of claim 5 in which the anchor has a cross section oriented generally perpendicularly to the longitudinal axis that defines a U shape.

### Claim 10 (depends on 5)

The combination of claim 5 in which a portion of the anchor has a curvilinear shape along the longitudinal axis.

### Claim 11 (depends on 10)

The combination of claim 10 in which the passage has a curvilinear shape along the insertion axis complementary to the curvilinear shape of the anchor.

### Claim 12 (depends on 10)

The combination of claim 10 in which the passage has a rectilinear shape along the insertion axis complementary to the curvilinear shape of the anchor.

### Claim 13

A combination for treating a spine, the combination comprising:
an anchor comprising
an anterior end configured for penetration of a vertebral surface,
a posterior end configured for impacting the anchor into a vertebra,
a longitudinal axis extending between the anterior end and the posterior end, and
a lock abutment surface disposed between the anterior end and the posterior end;
a spinal implant comprising
an access surface configured to be accessible with the implant implanted in a spine,
a vertebral contact surface,
a passage extending from the access surf ace to the vertebral contact surface defining an insertion axis for the anchor; and
a lock comprising
an anchor abutment surface disposable along the passage, with the anchor abutment surface configured to operatively mate with the lock abutment surface of the anchor; and with
the anchor and lock together having an installed configuration in which the anchor is inserted in the passage with the anchor abutment surface of the lock mated with the lock abutment surface of the anchor.

### Claim 14 (depends on 13)

The combination of claim 13 in which the anchor has a cross section oriented generally perpendicularly to the longitudinal axis that defines an L shape.

### Claim 15 (depends on 13)

The combination of claim 13 in which the anchor has a cross section oriented generally perpendicularly to the longitudinal axis that defines a V shape.

### Claim 16 (depends on 13)

The combination of claim 13 in which the anchor has a cross section oriented generally perpendicularly to the longitudinal axis that defines a T shape.

### Claim 17 (depends on 13)

The combination of claim 13 in which the anchor has a cross section oriented generally perpendicularly to the longitudinal axis that defines a U shape.

### Claim 18 (depends on 13)

The combination of claim 13 in which a portion of the anchor has a curvilinear shape along the longitudinal axis.

### Claim 19 (depends on 18)

The combination of claim 18 in which the passage has a curvilinear shape along the insertion axis complementary to the curvilinear shape of the anchor.

### Claim 20 (depends on 18)

The combination of claim 18 in which the passage has a rectilinear shape along the insertion axis complementary to the curvilinear shape of the anchor.