# US 12,178,732 B2 · Systems and devices for providing lift assistance for a surgical procedure

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- Number: US 12,178,732 B2
- Document ID: US12178732B2
- Status: Granted
- Kind: B2
- Application number: 18/200,359
- Filed: 2023-05-22
- Published: 2023-09-21
- Granted: 2024-12-31
- Earliest claimed: 2019-03-12
- Assignees: Mizuho Orthopedic Systems, Inc.
- Applicants: Mizuho Orthopedic Systems, Inc.
- Inventors: Peter E. Wagner
- Web page: https://patentgrep.com/patent/US12178732B2

## CPC

- A61F 5/0193: {Apparatus specially adapted for treating hip dislocation; Abduction splints}
- A61G 13/0081: {specially adapted for hip surgeries}
- A61G 13/123: {Lower body, e.g. pelvis, hip, buttocks}
- A61G 13/1245: {Knees, upper or lower legs}
- A61G 13/125: {Ankles or feet}
- A61G 13/1295: {having alignment devices for the patient's body}
- 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)
- A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00)

## Abstract

Systems and devices oriented in a compact manner provide lift assistance to a spar of a surgery table for hip, leg-related surgeries, or generally lower limb related orthopedic procedures. The compact device does not impede the radiolucency of the spar below the patient's hip, trochanter, or femur.

## Claims

### Claim 1

A lift device for providing lift assistance for a surgical procedure, comprising:
a joint housing comprising a cavity configured to receive a ball member configured to pivot the joint housing, the joint housing coupled to a surgical table and to a distal end of a spar configured to support at least one limb of a patient for the surgical procedure; and
a spring device coupled to the joint housing, the spring device being distal to the joint housing relative to the spar, and the spring device configured to actuate the joint housing in a range between a first position and a second position, the first position corresponding to a compressed position of the spring device, the second position corresponding to an extended position of the spring device.

### Claim 2 (depends on 1)

The lift device of claim 1, further comprising a spring joint housing disposed between the joint housing and the spring device,
wherein the spring device is configured to actuate the spring joint housing to actuate the joint housing.

### Claim 3 (depends on 2)

The lift device of claim 2, wherein the spring joint housing is distal to the joint housing relative to the spar.

### Claim 4 (depends on 1)

The lift device of claim 1, wherein the spring device is aligned with the spar.

### Claim 5 (depends on 1)

The lift device of claim 1, wherein the spring device comprises a single gas spring.

### Claim 6 (depends on 1)

The lift device of claim 1, wherein the spring device is below the spar.

### Claim 7 (depends on 1)

The lift device of claim 1, further comprising a swing arm coupled to the joint housing, the swing arm configured to actuate from a non-extended position to an extended position,
wherein the swing arm is configured to maintain the non-extended position as the joint housing transitions between the first position and second position as the spar is raised with respect to a plane of the surgical table, and
wherein the swing arm is configured to actuate from the non-extended position to the extended position when the joint housing transitions from the second position to a third position as the spar is further raised above with respect to the plane of the surgical table.

### Claim 8 (depends on 7)

The lift device of claim 7, wherein:
in the first position of the joint housing, the spring device is in the compressed position and the swing arm is in the non-extended position,
in the second position of the joint housing, the spring device is in the extended position and the swing arm is in the non-extended position, and
in the third position of the joint housing, the spring device is in the extended position and the swing arm is in the extended position.

### Claim 9

A lift device for providing lift assistance for a surgical procedure, comprising:
a joint coupled to a surgical table and to a distal end of a spar, the spar configured to support at least one limb of a patient for the surgical procedure; and
a spring device coupled to the joint such that the spring device is aligned with the spar, the spring device being distal to the joint relative to the spar, and the spring device configured to actuate the joint in a range between a first position and a second position, the first position corresponding to a compressed position of the spring device, the second position corresponding to an extended position of the spring device.

### Claim 10 (depends on 9)

The lift device of claim 9, wherein the spring device comprises a single gas spring positioned below the spar.

### Claim 11 (depends on 9)

The lift device of claim 9, wherein the joint is a ball joint.

### Claim 12 (depends on 9)

The lift device of claim 9, further comprising a spring joint housing disposed between the joint and the spring device,
wherein the spring device is configured to actuate the spring joint housing to actuate the joint.

### Claim 13 (depends on 12)

The lift device of claim 12, wherein the spring joint housing is distal to the joint relative to the spar.

### Claim 14 (depends on 9)

The lift device of claim 9, further comprising a swing arm coupled to the joint, the swing arm configured to actuate from a non-extended position to an extended position,
wherein the swing arm is configured to maintain the non-extended position as the joint transitions between the first position and second position as the spar is raised with respect to a plane of the surgical table, and
wherein the swing arm is configured to actuate from the non-extended position to the extended position when the joint transitions from the second position to a third position as the spar is further raised above with respect to the plane of the surgical table.

### Claim 15 (depends on 14)

The lift device of claim 14, wherein the swing arm is coupled to the spring device via a rotational joint such that the swing arm rotates with respect to the spring device when actuated from the non-extended position to the extended position.

### Claim 16

A system for providing lift assistance for a surgical procedure, comprising:
a spar extending between a first end and a second end opposing the first end, the first end being a proximal end and the second end being a distal end, the second end coupled to a surgical table, the spar configured to be lowered and raised with respect to a plane of the surgical table; and
a lift device, comprising:
a joint coupled to the distal end of a spar, the spar configured to support at least one limb of a patient for the surgical procedure; and
a spring device coupled to the joint, the spring device being distal to the joint relative to the spar and below the spar, and the spring device configured to actuate the joint in a range between a first position and a second position, the first position corresponding to a compressed position of the spring device, the second position corresponding to an extended position of the spring device.

### Claim 17 (depends on 16)

The system of claim 16, wherein the spring device comprises a single gas spring, the spring device being aligned with the spar.

### Claim 18 (depends on 16)

The system of claim 16, further comprising a spring joint housing disposed between the joint and the spring device,
wherein the spring device is configured to actuate the spring joint housing to actuate the joint.

### Claim 19 (depends on 18)

The system of claim 18, wherein the spring joint housing is distal to the joint relative to the spar.

### Claim 20 (depends on 18)

The system of claim 18, further comprising a swing arm coupled to the joint, the swing arm being distal to the joint relative to the spar, and the swing arm configured to actuate from a non-extended position to an extended position,
wherein the swing arm is configured to maintain the non-extended position as the joint transitions between the first position and second position as the spar is raised with respect to the plane of the surgical table, and
wherein the swing arm is configured to actuate from the non-extended position to the extended position when the joint transitions from the second position to a third position as the spar is further raised above with respect to the plane of the surgical table.