# US 12,109,130 B2 · Surgical extractor

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- Number: US 12,109,130 B2
- Document ID: US12109130B2
- Status: Granted
- Kind: B2
- Application number: 17/149,342
- Filed: 2021-01-14
- Published: 2021-07-15
- Granted: 2024-10-08
- Earliest claimed: 2020-01-14
- Assignees: Shukla Medical
- Applicants: Shukla Medical
- Inventors: Zachary Robert Sweitzer; Adam Gosik-Wolfe
- Web page: https://patentgrep.com/patent/US12109130B2

## CPC

- A61F 2/4603: {for insertion or extraction of endoprosthetic joints or of accessories thereof}
- A61F 2/4612: {of shoulders}
- A61B 17/92: Impactors or extractors, e.g. for removing intramedullary devices {(insertion or extraction of artificial joints A61F2/4603)}
- A61F 2002/4619: {for extraction}
- A61F 2002/4622: {having the shape of a forceps or a clamp}
- A61F 2002/4625: {with relative movement between parts of the instrument during use}
- A61F 2002/4627: {with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument}
- A61F 2002/4628: {with linear motion along or rotating motion about an axis transverse to the instrument axis or to the implantation direction, e.g. clamping}
- A61F 2002/4681: {by applying mechanical shocks, e.g. by hammering}
- 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 surgical extractor that includes a first arm and a second arm, a linkage assembly connected to the first and second arms, and a driven shaft operatively engaged with the linkage assembly for moving the linkage assembly between first and second positions. The surgical extractor further includes a tensioning shaft engageable with the driven shaft for moving the driven shaft relative to the linkage assembly.

## Claims

### Claim 1

A surgical extractor comprising:
a first arm and a second arm;
a linkage assembly comprising a plurality of links, wherein the linkage assembly is connected to each of the first and second arms at two locations along a length of each of the first and the second arms via separate unique links of the plurality of links;
a driven shaft operatively engaged with the linkage assembly for moving the linkage assembly between a first position such that the first arm and the second arm are separated by a first distance and a second position such that the first arm and the second arm are separated by a second, smaller distance to provide a clamping force; and
a tensioning shaft engageable with the driven shaft for moving the driven shaft relative to the linkage assembly, wherein the tensioning shaft is movable between (a) a locked position wherein the tensioning shaft is disengaged from the driven shaft and locked against axial movement and (b) a tensioning position wherein the tensioning shaft engages the driven shaft to allow for tension to be applied to the driven shaft.

### Claim 2 (depends on 1)

The surgical extractor of claim 1, wherein the tensioning shaft is movable between an adjustment position wherein the tension shaft is axially movable relative to the linkage assembly between the locked position and the tensioning position.

### Claim 3 (depends on 1)

The surgical extractor of claim 1, further comprising a housing containing the tensioning shaft and the driven shaft.

### Claim 4 (depends on 3)

The surgical extractor of claim 3, wherein the tensioning shaft is movable within the housing between the locked position and the tensioning position.

### Claim 5 (depends on 3)

The surgical extractor of claim 3, wherein the tensioning shaft extends through a proximal end of the housing and the driven shaft extends through a distal end of the housing.

### Claim 6 (depends on 3)

The surgical extractor of claim 3, wherein the housing further comprises a lock for releasably securing the tensioning shaft within the housing in the locked position.

### Claim 7 (depends on 6)

The surgical extractor of claim 6, wherein the tensioning shaft includes an annular groove that engages the lock for locking a position of the tensioning shaft within the housing in the locked position.

### Claim 8 (depends on 1)

The surgical extractor of claim 1, wherein the linkage assembly comprises a central link housing the driven shaft.

### Claim 9 (depends on 8)

The surgical extractor of claim 8, wherein the central link is threadedly engaged with the driven shaft.

### Claim 10 (depends on 1)

The surgical extractor of claim 1, wherein the plurality of links includes:
a central link;
a first triangular link having a first corner pivotably connected to a first side of the central link, and a second corner pivotably connected to the first arm;
a second triangular link having a first corner pivotably connected to a second side of the central link, and a second corner pivotably connected to the second arm;
a first drive link having a distal end pivotably connected to a third corner of the first triangular link and a proximal end; and
a second drive link having a distal end pivotably connected to a third corner of the second triangular link and a proximal end.

### Claim 11 (depends on 10)

The surgical extractor of claim 10, wherein the plurality of links further includes:
a first strut link having a proximal end pivotably connected to the first side of the central link and a distal end pivotably connected to the first arm; and
a second strut link having a proximal end pivotably connected to the second side of the central link and a distal end pivotably connected to the second arm.

### Claim 12 (depends on 1)

The surgical extractor of claim 1, wherein a proximal end of the driven shaft includes a socket.

### Claim 13 (depends on 1)

The surgical extractor of claim 1, wherein a distal end of the tensioning shaft includes a driver head for operatively engaging the driven shaft.

### Claim 14 (depends on 1)

The surgical extractor of claim 1, further comprising:
a first jaw attachable to a distal end of the first arm; and
a second jaw attachable to a distal end of the second arm.

### Claim 15 (depends on 14)

The surgical extractor of claim 14, further comprising an assembly for releasably connecting the first jaw to the first arm, the assembly comprising a spring-biased projection.

### Claim 16 (depends on 15)

The surgical extractor of claim 15, wherein the assembly further comprises a recess shaped to receive the spring-biased projection.

### Claim 17 (depends on 1)

The surgical extractor of claim 1, further comprising a handle assembly attachable to the tensioning shaft.

### Claim 18 (depends on 17)

The surgical extractor of claim 17, wherein the handle assembly includes a T-handle having a handle and a through hole located in proximity to a lateral end of the handle.

### Claim 19 (depends on 1)

The surgical extractor of claim 1, further comprising a strike plate extending from a proximal end of the tensioning shaft.

### Claim 20

A surgical extractor for extracting orthopedic implants comprising:
a housing;
a first arm and a second arm;
a linkage assembly connected to the first and second arms;
a driven shaft housed within the housing and operatively engaged with the linkage assembly for moving the linkage assembly; and
a tensioning shaft housed within the housing and engageable with the driven shaft for moving the driven shaft relative to the linkage assembly,
wherein the linkage assembly includes:
a central link,
a first triangular link having a first corner pivotably connected to a first side of the central link, and a second corner pivotably connected to the first arm,
a second triangular link having a first corner pivotably connected to a second side of the central link, and a second corner pivotably connected to the second arm,
a first drive link having a distal end pivotably connected to a third corner of the first triangular link and a proximal end pivotably connected to the housing, and
a second drive link having a distal end pivotably connected to a third corner of the second triangular link and a proximal end pivotably connected to the housing.

### Claim 21 (depends on 20)

The surgical extractor of claim 20, wherein the driven shaft threadedly engages the central link to move between first and second positions, wherein in the first position the first and second arms are spaced apart a first distance and in the second position, the first and second arms are spaced apart a second distance less than the first distance.