Collagen fiber rotary cutting instrument

Abstract

The utility model discloses a collagenous fiber rotary cutting instrument. The collagenous fiber rotary cutting instrument comprises a rotary cutting suction pipe, a handle, a collecting bottle and a negative pressure device, the rotary-cut suction pipe comprises an outer pipe and an inner pipe; the far end of the outer tube is provided with a suction port, the edge of the suction port is a straight edge, and the near end of the outer tube is provided with a first negative pressure connecting nozzle communicated with the suction port; the far end of the inner tube is provided with a cutting opening, the edge of the cutting opening is a sawtooth edge, and the near end of the inner tube is provided with a negative pressure connecting opening communicated with the cutting opening. The inner pipe is embedded in the outer pipe, and the cutting opening of the inner pipe is right opposite to the suction opening of the outer pipe. According to the utility model, the rotary-cut suction tube is designed, and the inner tube of the rotary-cut suction tube is provided with the cutting opening with the serrated edge, so that collagenous fibers in fat can be rotationally cut and sucked out together with the fat, and the suction efficiency is high; and the outer tube of the rotary-cut suction tube is a blunt end, and the operation is the same as that of a negative pressure liposuction method, so that the liposuction area is small, the damage is small, and safety and reliability are realized.

Description

Technical Field

[0001] This utility model relates to the field of fat grafting surgery technology, specifically to a collagen fiber rotary cutting instrument. Background Technology

[0002] Many filler materials are used clinically in rhinoplasty and chin augmentation. Among synthetic materials, solid ones include silicone rubber and expanded polytetrafluoroethylene (ePTFE), which are prone to complications such as rejection and postoperative infection. Soft fillers include collagen and hyaluronic acid; these are absorbable materials that require repeated fillings, increasing costs. Autologous tissues include dermal flaps, autologous ear cartilage, and rib cartilage; however, autologous tissue flaps or cartilage transplants can lead to secondary trauma and deformities at the donor site. Currently, rhinoplasty and chin augmentation surgeries all have disadvantages such as significant trauma, slow recovery, susceptibility to infection, and potential for deformation.

[0003] Autologous fat grafting, as a soft tissue filler, is increasingly valued by plastic surgeons both domestically and internationally due to its advantages such as abundant sources, easy harvesting, simple operation, good filling and appearance, and no rejection reaction. Because of its obvious effects, minimal invasiveness, and relatively low cost, the number of people seeking facial fat grafting is increasing year by year. However, there is a certain absorption rate after fat transplantation, which means that some patients may need multiple fillings, especially in areas such as the bridge of the nose and chin. Due to factors such as small local tissue volume, poor vascular network, and high skin tension, the survival rate of transplanted fat is very low. Therefore, it is currently difficult to achieve ideal results after fat grafting in these areas.

[0004] Recently, "lipocollagen" technology (invention patent, patent number ZL 2018 1 1283679.4) has demonstrated its suitability for rhinoplasty and chin augmentation. The subcutaneous fat layer of the human body contains a large amount of fibrous tissue, forming the superficial fascia system. This fibrous tissue is composed of coarse type I collagen fibers, which function to separate fat into lobules. "Lipocollagen" is collagen fiber obtained from the fat layer through physical methods. After purification, it is used as a transplant material. Due to its high density and viscosity, it has strong supporting force, making it suitable for rhinoplasty and chin augmentation.

[0005] Currently, "lipocollagen" extraction involves obtaining particulate fat through negative pressure tumescent liposuction while simultaneously extracting fibrous tissue from the aspirated fat suspension. On average, only 1 ml of lipocollagen can be extracted from every 200-300 ml of particulate fat, and the collagen fiber content in lipocollagen is generally around 30-40%. Rhinoplasty or chin augmentation typically requires at least 2-3 ml of lipocollagen. Using traditional liposuction methods, 1000 ml of fat would need to be extracted to obtain the required amount of lipocollagen, resulting in an extremely low yield. Furthermore, liposuction is a complex procedure, taking at least 4 hours and requiring general anesthesia. To obtain 1000 ml of fat, the entire abdomen or both thighs would need to be suctioned, resulting in a large area of ​​liposuction, significant damage, and slow recovery. Therefore, patients find this method of lipocollagen extraction difficult to accept. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a collagen fiber rotary cutter that can significantly improve the collagen fiber extraction efficiency, and has a small fat absorption area and minimal damage.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A collagen fiber rotary cutter, the collagen fiber rotary cutter comprising a rotary cutting suction tube, a handle, a collection bottle and a negative pressure device;

[0009] The rotary cutting suction tube includes an outer tube and an inner tube; the distal end of the outer tube has a suction port with a straight edge, and the proximal end of the outer tube has a first negative pressure connection nozzle communicating with the suction port; the distal end of the inner tube has a cutting opening with a serrated edge, and the proximal end of the inner tube has a negative pressure connection nozzle communicating with the cutting opening; the inner tube is nested in the outer tube and the cutting opening of the inner tube faces the suction port of the outer tube;

[0010] The handle is provided with a second negative pressure connection port. The proximal ends of the outer tube and the inner tube are connected to the handle. The first negative pressure connection port of the outer tube is located outside the handle, and the negative pressure connection port of the inner tube is located inside the handle and communicates with the second negative pressure connection port. The handle is provided with a motor for driving the inner tube to rotate.

[0011] The first negative pressure connector and the second negative pressure connector are respectively connected to the collection bottle through a negative pressure tube, and the collection bottle is connected to the negative pressure device.

[0012] As a preferred technical solution, the near end of the inner tube is provided with a bayonet, and the rotating shaft of the motor is connected to the inner tube through the bayonet.

[0013] As a preferred technical solution, the collection bottle is equipped with a sieve.

[0014] As a preferred technical solution, the serration height of the serrated edge of the inner tube is 1-3mm, and the serration spacing is 1-3mm.

[0015] As a preferred technical solution, both the suction port and the cutting port are oblong holes, the length of the suction port is 7-10mm and the width is 4-6mm, and the length of the cutting port is 5-8mm and the width is 3-5mm.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention features a rotary cutting suction tube with a serrated cutting edge on the inner tube. This allows the collagen fibers in the fat to be cut and suctioned out along with the fat, resulting in high suction efficiency. The outer tube of the rotary cutting suction tube has a blunt tip, and the operation is the same as that of negative pressure liposuction. Therefore, the suction area is small, the damage is minimal, and it is safe and reliable. Attached Figure Description

[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0019] Figure 1 This is a schematic diagram of the outer tube structure;

[0020] Figure 2 This is a schematic diagram (front view) of the inner tube.

[0021] Figure 3 This is a schematic diagram (side view) of the inner tube.

[0022] Figure 4 This is a schematic diagram of the handle's structure;

[0023] Figure 5 This is a schematic diagram of the assembly structure of the outer tube, inner tube, and handle;

[0024] Figure 6 This is a schematic diagram of the connection structure of a collagen fiber rotary cutter. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0026] like Figure 1-6 The invention relates to a collagen fiber rotary cutter, which includes a rotary cutting suction tube, a handle 1, a collection bottle 2, and a negative pressure device 3.

[0027] The rotary cutting suction tube includes an outer tube 4 and an inner tube 5; as shown in the figure Figure 1As shown, the distal end of the outer tube 4 has a suction port 6 with a straight edge, and the proximal end of the outer tube 4 is provided with a first negative pressure connecting nozzle 7 that communicates with the suction port 6; Figure 2 and Figure 3 As shown, the inner tube 5 has a cutting opening 8 at its distal end with a serrated edge, and a negative pressure connection port 9 communicating with the cutting opening 8 at its proximal end; the inner tube 5 is nested in the outer tube 4 and the cutting opening 8 of the inner tube 5 is directly opposite the suction port 6 of the outer tube 4.

[0028] The serration height of the serrated edge of the inner tube 5 is 1-3mm, and the serration spacing is 1-3mm; the suction port 6 and the cutting port 8 are both waist-shaped holes, the length of the suction port 6 is 7-10mm and the width is 4-6mm, and the length of the cutting port 8 is 5-8mm and the width is 3-5mm.

[0029] like Figure 5 As shown, the handle 1 is provided with a second negative pressure connection port 10. The proximal ends of the outer tube 4 and the inner tube 5 are connected to the handle 1. The first negative pressure connection port 7 of the outer tube 4 is located outside the handle 1, and the negative pressure connection port 9 of the inner tube 5 is located inside the handle 1 and communicates with the second negative pressure connection port 10. The handle 1 is provided with a motor for driving the inner tube 5 to rotate. The proximal end of the inner tube 5 is provided with a bayonet 11. The rotating shaft of the motor is connected to the inner tube 5 through the bayonet 11, so the motor can drive the inner tube 5 to rotate.

[0030] like Figure 6 As shown, the first negative pressure connector 7 and the second negative pressure connector 10 are respectively connected to the collection bottle 2 through a negative pressure tube, and the collection bottle 2 is connected to the negative pressure device 3; a screen 12 is provided inside the collection bottle 2.

[0031] The operating procedure for a collagen fiber rotary cutter is as follows:

[0032] 1. When using, first inject the swelling fluid into areas with more fat, such as the thighs or abdomen, and make a small incision in the skin of a concealed area;

[0033] 2. Start the negative pressure device and the motor in the handle. The inner tube starts to rotate, and at the same time, negative pressure is formed in the outer tube and the inner tube. Insert the rotary cutting suction tube into the deep adipose tissue. The adipose tissue is attracted to the suction port and the cutting port by the negative pressure. As the inner tube rotates, the collagen fibers in the fat are cut off along with the fat and are sucked into the outer tube and the inner tube, and finally enter the collection bottle.

[0034] 3. The collection bottle contains a sieve, where collagen fibers and fat particles remain, while water leaks through the sieve to the bottom of the bottle. When a sufficient amount has been collected, the machine is stopped. The sieve in the collection bottle is removed, and the fat and collagen fibers on the sieve are poured into a container. A rotary collagen fiber roller press (utility model, patent number ZL 2019 2 1475195.X) is used to further squeeze and remove fat particles, ultimately yielding purified collagen fibers.

[0035] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A collagen fiber rotary slicing instrument, characterized in that: The collagen fiber rotary cutter includes a rotary cutting suction tube, a handle, a collection bottle, and a negative pressure device; The rotary cutting suction tube includes an outer tube and an inner tube; the distal end of the outer tube has a suction port with a straight edge, and the proximal end of the outer tube has a first negative pressure connection nozzle communicating with the suction port; the distal end of the inner tube has a cutting opening with a serrated edge, and the proximal end of the inner tube has a negative pressure connection nozzle communicating with the cutting opening; the inner tube is nested in the outer tube and the cutting opening of the inner tube faces the suction port of the outer tube; The handle is provided with a second negative pressure connection port. The proximal ends of the outer tube and the inner tube are connected to the handle. The first negative pressure connection port of the outer tube is located outside the handle, and the negative pressure connection port of the inner tube is located inside the handle and communicates with the second negative pressure connection port. The handle is provided with a motor for driving the inner tube to rotate. The first negative pressure connector and the second negative pressure connector are respectively connected to the collection bottle through a negative pressure tube, and the collection bottle is connected to the negative pressure device.

2. The collagen fiber rotary cutter according to claim 1, characterized in that: The inner tube is provided with a bayonet at its near end, and the rotating shaft of the motor is connected to the inner tube through the bayonet.

3. The collagen fiber rotary cutter according to claim 1, characterized in that: The collection bottle is equipped with a sieve.

4. The collagen fiber rotary cutter according to claim 1, characterized in that: The serration height of the serrated edge of the inner tube is 1-3mm, and the serration spacing is 1-3mm.

5. The collagen fiber rotary cutter according to claim 1, characterized in that: Both the suction port and the cutting port are waist-shaped holes. The length of the suction port is 7-10mm and the width is 4-6mm. The length of the cutting port is 5-8mm and the width is 3-5mm.

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