# US 11,305,051 B2 · Fat cutter and integrated machine for preparation of in vitro fine-particle fat

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- Number: US 11,305,051 B2
- Document ID: US11305051B2
- Status: Granted
- Kind: B2
- Application number: 17/415,748
- Filed: 2020-01-17
- Published: 2022-02-10
- Granted: 2022-04-19
- Earliest claimed: 2019-09-30
- Assignees: Xiangya Hospital Central South University
- Applicants: Xiangya Hospital Central South University
- Inventors: Pengju Fan; Zhen Li; Man Fang; Jingjing Li
- Web page: https://patentgrep.com/patent/US11305051B2

## CPC

- A61M 1/892: {with treatment of the collected fat}
- B01D 29/27: Filter bags
- B01D 29/76: Handling the filter cake in the filter for purposes other than for regenerating (B01D29/94 takes precedence)
- B01D 35/28: Strainers not provided for elsewhere
- B01D 35/30: Filter housing constructions
- B02C 18/12: with drive arranged below container {(B02C18/083 takes precedence)}
- B02C 18/18: Knives; Mountings thereof
- C12M 45/02: {by mechanical forces; Stirring; Trituration; Comminuting (crushing, pulverizing, disintegrating in general B02C)}
- A61M 2202/08: Lipoids
- A61M 2205/103: rotating
- A61M 2205/3365: Rotational speed
- A61M 2205/502: User interfaces, e.g. screens or keyboards
- A61M 2205/7545: for solid matter, e.g. microaggregates
- B01D 2201/204: Systems for applying vacuum to filters
- B01D 2201/29: Filter cartridge constructions
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- B02C: CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN ({household tools and machines for pulverising foodstuffs, e.g. coffee and spice mills A47J42/00; pharmaceutical mortars A61J3/02; mechanical processing of refuse and garbage B03B9/06; dressing mould materials by grinding B22C5/04}; obtaining metallic powder by crushing, grinding or milling B22F9/04; {recovery of plastics by disintegrating B29B17/00; crushing raw materials in starch making C08B30/02; beaters for papermaking D21D1/02; crushing devices specially for transport in mines E21F13/002; slag crushing devices F23J1/00; fuel milling devices in combustion apparatus F23K1/00; household devices for crushing coal F24B15/02; ice disintegrating devices F25C5/02})
- C12M: APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; {APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS}

## Abstract

A fat cutter and an integrated machine for preparation of in vitro fine-particle fat are provided. The fat cutter includes a fat inlet channel, a fat outlet channel, at least one set of blades disposed between an outlet of the fat inlet channel and an inlet of the fat outlet channel, and a housing that seals a space in which the outlet of the fat inlet channel, the inlet of the fat outlet channel, and the blades are located. A fat inlet of the fat inlet channel is connected to a large-diameter liposuction tube by a liposuction channel, and a fat outlet of the fat outlet channel is connected to a high-negative pressure device. The outlet of the fat inlet channel and the inlet of the fat outlet channel are oppositely provided, and a gap therebetween matches the thickness of the blades.

## Claims

### Claim 1

A fat cutter, comprising a fat inlet channel, a fat outlet channel, at least one set of blades disposed between an outlet of the fat inlet channel and an inlet of the fat outlet channel, and a housing that seals a space, wherein the outlet of the fat inlet channel, the inlet of the fat outlet channel, and the at least one set of blades are located in the space, wherein a fat inlet of the fat inlet channel is connected to a large-diameter liposuction tube, and a fat outlet of the fat outlet channel is connected to a high-negative pressure device; and
the outlet of the fat inlet channel and the inlet of the fat outlet channel are oppositely provided, and a first gap is provided between the outlet of the fat inlet channel and the inlet of the fat outlet channel to form an annular cutting slot matching a thickness of the at least one set of blades, the outlet of the fat inlet channel is provided above the inlet of the fat outlet channel, and in a working state, cutting edges of the at least one set of blades pass through a line connecting the outlet of the fat inlet channel and the inlet of the fat outlet channel to cut fat particles.

### Claim 2 (depends on 1)

The fat cutter according to claim 1, wherein the housing comprises a cutting table and an upper end cover mounted above the cutting table, a fat particle cutting device that drives the at least one set of blades is mounted in the cutting table, the fat inlet channel is provided on the upper end cover, the fat outlet channel is provided at a position of the cutting table corresponding to the fat inlet channel, the upper end cover is sealed and mounted on the cutting table by using a seal to form an assembled state, and in the assembled state, the first gap is provided in a region between the upper end cover and the cutting table to form the annular cutting slot, wherein the outlet of the fat inlet channel and the inlet of the fat outlet channel are located in the region, and the at least one set of blades of the fat particle cutting device is disposed in the annular cutting slot.

### Claim 3 (depends on 2)

The fat cutter according to claim 2, wherein the outlet of the fat inlet channel is coaxially provided above the inlet of the fat outlet channel, a first projection of the outlet of the fat inlet channel on a horizontal plane falls within a range of a second projection of the inlet of the fat outlet channel on the horizontal plane, and an axis of the fat inlet channel and the fat outlet channel is parallel to a rotation axis of the at least one set of blades.

### Claim 4 (depends on 3)

The fat cutter according to claim 3, wherein the cutting edges and blade faces of the at least one set of blades are perpendicular to the axis of the fat inlet channel and the fat outlet channel.

### Claim 5 (depends on 2)

The fat cutter according to claim 2, wherein a height of the annular cutting slot is 2-4 mm.

### Claim 6 (depends on 2)

The fat cutter according to claim 2, wherein the fat particle cutting device comprises the at least one set of blades, a blade carrier, a shaft, and a speed-regulating motor, the at least one set of blades are mounted on the blade carrier, the at least one set of blades and the blade carrier are fixed on the shaft by a self-locking nut, the shaft is mounted on the cutting table through a bearing, the bearing and the cutting table, and the shaft and the cutting table are respectively sealed by a sealing ring, and the shaft is connected to the speed-regulating motor by a buffer coupling.

### Claim 7 (depends on 6)

The fat cutter according to claim 6, wherein the speed-regulating motor is electrically connected to a controller, and the controller comprises a rotational speed display screen for displaying a rotational speed of the speed-regulating motor, a speed-regulating switch for regulating the rotational speed of the speed-regulating motor a work indicator for displaying a state of the speed-regulating motor, and a power switch for controlling on and off of the speed-regulating motor.

### Claim 8 (depends on 1)

The fat cutter according to claim 1, wherein a rotational speed of the at least one set of blades is 2500-3000 rpm.

### Claim 9 (depends on 1)

The fat cutter according to claim 1, wherein the liposuction tube comprises a handle and a liposuction cannula, a liposuction channel and an air bleed channel are provided in the handle is further provided on the housing, the air guide channel is in communication with the annular cutting slot, an outlet of the liposuction channel is connected to the fat inlet of the fat inlet channel of the housing by a liposuction pipeline, a connection channel is further provided in the handle, an air bleed hole is provided on an outer side of the handle, a front end of the air bleed channel is in communication with the connection channel, one end of the connection channel is in communication with the air bleed hole provided on the handle, an other end of the connection channel is in communication with the liposuction channel, an angle is formed between the connection channel and the liposuction channel to prevent suctioned fat from entering the connection channel from the liposuction channel, and an outlet end of the air bleed channel is connected to an air inlet of the air guide channel of the housing by an air bleed tub.

### Claim 10 (depends on 9)

The fat cutter according to claim 9, wherein the angle between the connection channel and the liposuction channel facing a connector of the liposuction cannula is an acute angle.

### Claim 11 (depends on 9)

The fat cutter according to claim 9, wherein a groove that helps to press and seal the air bleed hole with pulp of a thumb is provided in a region of the handle, and the air bleed hole is located in the region.

### Claim 12 (depends on 1)

The fat cutter according to claim 1, wherein an inner wall of the annular cutting slot and an inner wall of the inlet of the fat outlet channel are both covered with a soft material layer.

### Claim 13 (depends on 1)

The fat cutter according to claim 1, wherein the inlet of the fat outlet channel is smaller than an outlet of the annular cutting slot to form a step, and an inner wall of the step, a first joint between the step and the outlet of the annular cutting slot, and a second joint between the step and the inlet the fat outlet channel are all curved surfaces.

### Claim 14 (depends on 1)

An integrated machine fora preparation of in vitro fine-particle fat, comprising the fat cutter according to claim 1, and further comprising a fat collection tank, a negative pressure, and a negative pressure tank set, wherein the fat collection tank comprises a cylinder and a filter cartridge, a top portion of the cylinder is provided with an opening, a bottom portion of the cylinder is provided with a negative pressure interface in communication with an inner cavity of the cylinder, the filter cartridge is formed by a strainer, and diameters of filter holes of the strainer are less than diameters of to-be-filtered fat particles, after the filter cartridge is mounted in the cylinder, there is a second gap between a periphery of the filter cartridge and an inner wall of the cylinder and there is a third gap between a bottom portion of the filter cartridge and the inner wall of the cylinder, a top portion of the filter cartridge is provided with an opening, an end cover is sealed and mounted on the opening of the filter cartridge, the end cover is connected to the cylinder in a sealed manner after the filter cartridge is mounted in the cylinder, an inlet-outlet is provided on the end cover, the fat outlet of the fat outlet channel on the fat cutter is connected to the inlet-outlet of the fat collection tank by a connection pipeline, the negative pressure generator is connected to the negative pressure tank set by a first pipeline, and the negative pressure tank set is connected to the negative pressure interface of the fat collection tank by a second pipeline.

### Claim 15 (depends on 14)

The integrated machine for the preparation of the in vitro fine-particle fat according to claim 14, wherein the fat cutter, the negative pressure generator, and the negative pressure tank set are mounted on a support, the fat cutter is mounted on the support through a fixed frame, and a plurality of casters for support are mounted at a bottom portion of the support.

### Claim 16 (depends on 14)

The integrated machine for the preparation of the in vitro fine-particle fat according to claim 14, wherein a self-locking buckle is disposed on an outer wall of the cylinder, a gasket is disposed on the end cover, and after the filter cartridge is mounted in the cylinder, the end cover is connected to an opening edge of the cylinder by the gasket, and the end cover is tightly pressed on the opening edge of the cylinder through the self-locking buckle on the cylinder, so that the end cover and the cylinder are sealed.

### Claim 17 (depends on 14)

The integrated machine for the preparation of the in vitro fine-particle fat according to claim 14, wherein the filter cartridge comprises a lower strainer and an upper closed cone, and a height of the lower strainer is ⅓-¾ of a height of the filter cartridge.

### Claim 18 (depends on 14)

The integrated machine for the preparation of the in vitro fine-particle fat according to claim 14, wherein the housing comprises a cutting table and an upper end cover mounted above the cutting table, a fat particle cutting device that drives the at least one set of blades is mounted in the cutting table, the fat inlet channel is provided on the upper end cover, the fat outlet channel is provided at a position of the cutting table corresponding to the fat inlet channel, the upper end cover is sealed and mounted on the cutting table by using a seal to form an assembled state, and in the assembled state, the first gap is provided in a region between the upper end cover and the cutting table to form the annular cutting slot, wherein the outlet of the fat inlet channel and the inlet of the fat outlet channel are located in the region, and the at least one set of blades of the fat particle cutting device is disposed in the annular cutting slot.

### Claim 19 (depends on 18)

The integrated machine for the preparation of the in vitro fine-particle fat according to claim 18, wherein the outlet of the fat inlet channel is coaxially provided above the inlet of the fat outlet channel, a first projection of the outlet of the fat inlet channel on a horizontal plane falls within a range of a second projection of the inlet of the fat outlet channel on the horizontal plane, and an axis of the fat inlet channel and the fat outlet channel is parallel to a rotation axis of the at least one set of blades.

### Claim 20 (depends on 19)

The integrated machine for the preparation of the in vitro fine-particle fat according to claim 19, wherein the cutting edges and blade faces of the at least one set of blades are perpendicular to the axis of the fat inlet channel and the fat outlet channel.