CN204636435U - Autologous fat injection position machinery flash chamber - Google Patents

Abstract

This utility model overcomes current fluid injection flash chamber and there is the low defect of safety, a kind of autologous fat injection position machinery flash chamber is provided, comprise injection needle, also comprise device front portion and device afterbody, device front portion comprises pushing block, expansion board and stationary pipes; Pushing block is set in stationary pipes, and described stationary pipes afterbody is hinged with trigger, is provided with push rod between trigger and pushing block, described expansion board and stationary pipes front portion hinged, be provided with support bar between expansion board and pushing block; Described device afterbody comprises hands handle; Described stationary pipes tail end is fixedly connected with handle, and handle is provided with the through hole passed for injection needle, and through hole is communicated with the endoporus of stationary pipes; Described injection needle is positioned at stationary pipes, and the syringe needle of injection needle is positioned at outside stationary pipes.This utility model has the features such as practical, simple to operate.

Description

Autologous fat injection site mechanical expansion device

technical field

The utility model belongs to the field of medical devices, in particular to a mechanical expansion device for autologous fat injection sites.

Background technique

Autologous fat refers to absorbing excess subcutaneous fat cells from certain parts of the human body, purifying the sucked mixture, injecting drugs to obtain compound fat particles, and selecting complete particle fat cells to transplant into the patient's own fat by injection. filled parts. Since autologous fat is the patient's own tissue, transplantation is safe and effective, and is often used to fill facial depressions, breast augmentation, buttock augmentation, etc. During the fat injection process, if the fat is injected directly to the injection site, it is often difficult to push the fat to the injection site because there is no cavity formed at the injection site. After the fat cells are injected into the injection site, since there is no cavity formed at the injection site, the fat cells will accumulate. The accumulation of fat cells will lead to the successful transplantation, and the original skin will appear as an extra piece of fat, which is unsightly and affects the transplantation effect.

At present, liquid injection expansion technology is usually used to make the injection site form a cavity before injecting fat cells. The publication number is: the injection expansion device in the patent literature of CN 103223201 B includes a needle tube device and an injection device; The needle tube and the expansion tube sleeved outside the injection needle tube, the needle of the injection needle tube is exposed outside the expansion tube, and the end of the expansion tube close to the needle of the injection needle tube is provided with an expansion bag for expanding the cavity at the fat injection site , the other end of the expansion tube is provided with an expansion branch for injecting the expansion medium, and the injection needle is provided with an injection port; the needle is provided with an injection hole, and the injection hole is arranged on the side wall of the needle; The injection device includes an expansion medium injector connected with the expansion branch tube and a fat cell injector connected with the injection interface. However, when using the liquid injection expansion device, if the expansion sac breaks due to the quality problem of the expansion sac itself or friction and other reasons after repeated use, the liquid in the expansion sac enters the subcutaneous tissue, and the liquid in the expansion sac After entering the subcutaneous tissue, if it cannot be removed in time, it will cause skin ulceration and other phenomena. The parts that are injected with autologous fat are usually parts that are related to the patient's aesthetic image, such as the face. If the liquid in the expansion sac accidentally enters the subcutaneous tissue and is not cleaned up during the treatment process, resulting in facial skin ulceration, it can be seen that the safety of the autologous fat injection device itself is extremely important to the patient during the treatment process.

There is an urgent need for a highly safe volume expansion device for autologous fat injection sites, which has become an urgent problem to be solved in the plastic surgery industry.

Utility model content

The technical problem to be solved by the utility model is to aim at the defect of low safety in the current liquid injection expansion device.

In order to solve the above technical problems, the utility model provides the following technical solutions:

The mechanical expansion device for the autologous fat injection site includes an injection needle tube, and also includes a front part and a tail part of the device. The front part of the device includes a push block, an expansion plate and a fixed tube; the push block is sleeved on the fixed tube, and the tail part of the fixed tube is hinged with a trigger, a push rod is provided between the trigger and the push block, the expansion plate is hinged to the front of the fixed pipe, and a support rod is provided between the expansion plate and the push block; the tail of the device includes a handle; the tail end of the fixed pipe is connected to the The handle is fixedly connected, and the handle is provided with a through hole for the injection needle tube to pass through, and the through hole communicates with the inner hole of the fixed tube; the injection needle tube is located in the fixed tube, and the needle of the injection needle tube is located outside the fixed tube.

Adopting the mechanical expansion device for the autologous fat injection site of the technical solution of the utility model, the injection needle tube injects fat to the subcutaneous tissue where the fat cells need to be injected, and the expansion plate rotates along the axial direction of the fixed tube around the hinge of the expansion plate and the fixed tube, and the The fat located on the expansion plate is pushed away to form a cavity to facilitate the injection of fat cells. The push block moves on the fixed tube to realize the simultaneous movement of multiple expansion plates through the support rod. The trigger rotates to drive the push rod to move to realize the movement of the push block on the fixed tube. The fixed tube supports the expansion plate and the injection needle tube, and the handle is convenient for the operator to hold the volume expansion device.

Working principle: Pull the trigger to make the trigger rotate around the hinge point of the trigger and the fixed tube, so that the push rod pushes the push block to move towards the expansion plate. At this time, the push block drives the support rod to move, so that the expansion plate surrounds the expansion plate The hinge point with the fixed tube rotates, and at this time the expansion plate pushes the fat here to move, so that a cavity is formed here, and then the fat cells are injected into the cavity through the injection needle. During the process of injecting fat cells with the injection needle, The device gradually moves outwards of the subcutaneous tissue.

Beneficial effects: the device completely adopts a mechanical structure, and compared with the current liquid injection device, it avoids the risk of the liquid in the expansion sac flowing into the subcutaneous tissue due to the rupture of the expansion sac and causing skin ulceration. The device realizes the purpose of fast, safe and simple capacity expansion through the link mechanism.

Further, a first expansion sleeve is provided in the through hole, a second expansion sleeve is provided in the inner hole of the fixing tube, and the injection needle tube passes through the first expansion sleeve and the second expansion sleeve. The first expansion sleeve and the second expansion sleeve form a simple-supported beam model for the injection needle tube, so that the injection needle tube is fixed more firmly, and prevent the injection needle tube from shaking and increasing the patient's pain during the process of piercing the injection needle tube into the subcutaneous tissue. The first expansion sleeve also prevents subcutaneous tissue cells from entering the fixing tube.

Furthermore, there is a reset member between the trigger and the handle to facilitate the reset of the trigger, so that the expansion plate can automatically reset after the expansion device forms a cavity in the subcutaneous tissue.

Further, the lower part of the trigger is provided with an arc-shaped chute which is convenient for pulling the trigger, and the lower part of the handle is provided with an arc-shaped chute which is convenient for holding. The arc chute at the lower part of the trigger is convenient for the operator to pull the trigger with his finger, and the arc chute at the lower part of the handle is convenient for the operator to hold.

Further, the tip of the injection needle tube is a solid tip, and there are a plurality of grease injection holes on the side wall of the injection needle tube close to the tip, and the grease injection holes are evenly distributed on the injection needle tube in the circumferential direction, and the grease injection holes and the injection needle tube The inner holes are connected. The tip of the injection needle is a solid tip to prevent the subcutaneous cells from entering the injection needle and blocking the inner hole of the injection needle when the injection needle is inserted into the subcutaneous tissue. During the process of subcutaneous tissue, fat cells enter the injection needle to block the injection needle, and facilitate the injection of fat cells in the injection needle into the cavity. The fat injection holes are evenly distributed on the injection needle, so that the cavity of the subcutaneous tissue is filled with fat cells more easily. balanced.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the technical scheme of the utility model is further described:

Fig. 1 is a schematic structural view of an embodiment of a mechanical expansion device for an autologous fat injection site of the present invention;

Fig. 2 is a structural schematic diagram of the mechanical expansion device for autologous fat injection site of the present invention when the expansion plate is deployed.

Reference signs in the figure: handle 1, trigger 2, push rod 3, push block 4, support rod 5, expansion plate 6, injection needle tube 7, fixed tube 8, connector 9, spring 10, second expansion sleeve 11, second An expansion sleeve 12, a grease injection hole 13, and a needle 14.

Detailed ways

As shown in Figure 1, the autologous fat injection site mechanical expansion device includes a handle 1, a trigger 2, a push rod 3, a push block 4, two support rods 5, two expansion plates 6, an injection The needle tube 7 and a fixed tube 8, the right end of the fixed tube 8 is welded with the handle 1, the lower part of the handle 1 has a semi-arc groove, which is convenient for holding the handle 1, the upper part of the handle 1 is provided with a through hole, and the through hole The axis line is collinear with the axis line of the fixed tube 8, a first expansion sleeve 12 is embedded in the through hole, a second expansion sleeve 11 is embedded in the left end of the fixed tube 8, and the injection needle tube 7 passes through the first expansion sleeve 12 and the second expansion sleeve 11, and the needle head 14 of the injection needle tube 7 is exposed outside the fixed tube 8, the tip of the injection needle tube 7 is a solid tip, and there are four grease injection holes 13 on the left end wall of the injection needle tube 7, and the four injection Grease holes 13 are evenly distributed circumferentially on the injection needle tube 7, and the grease injection holes 13 communicate with the inner hole of the injection needle tube 7, and a connector 9 is welded to the right end of the injection needle tube 7, and the connector 9 is an externally threaded pipe, and the outer threaded pipe The axis line is collinear with the axis line of the injection needle tube 7, and the connecting head 9 is exposed outside the handle 1. The trigger 2 is connected to the fixed pipe 8 through a rotating pin, and the rotating pin is located in the middle of the trigger 2. The lower end of the trigger 2 has a semi-circular groove to facilitate people's index finger to pull the trigger 2. The upper end of the trigger 2 is connected to the push rod 3. The right end is hinged by a pin, and the left end of the push rod 3 is welded with the push block 4. The push block 4 is sleeved on the fixed pipe 8, the push block 4 can slide along the fixed pipe 8, the left end of the support rod 5 is hinged with the expansion plate 6, the hinge point is located in the middle of the expansion plate 6, the right end of the support rod 5 is connected to the push block The 4 pins are hinged, the expansion plate 6 is ball-hinged with the fixed tube 8, and the two expansion plates 6 are arranged symmetrically with respect to the axis of the fixed tube 8. Between the upper end of the trigger 2 and the upper end of the handle 1, there is a reset member to facilitate the reset of the trigger 2. The reset member is a spring 10, and the two ends of the spring 10 are welded to the trigger 2 and the handle 1 respectively.

In the specific implementation process, as shown in Figure 2, first connect the connector 9 to the fat injection hose, then insert the injection needle tube 7 and the expansion plate 6 into the subcutaneous tissue of the patient, and pull the trigger 2 with the index finger to make the trigger 2 The lower end moves to the right, and the trigger 2 rotates around the rotating pin on the trigger 2, so that the upper end of the trigger 2 moves to the left, and the upper end of the trigger 2 pushes the push rod 3 and the push block 4 to move to the left along the fixed pipe 8. At this time, the push Block 4 makes the support rod 5 move to the left, and the support rod 5 makes the expansion plate 6 rotate around the hinge point of the expansion plate 6 and the fixed tube 8. At this time, the expansion plate 6 pushes the fat here to move to the left, forming a cavity for subsequent injection. Set fat cells. Then release the trigger 2, and the trigger 2 resets the trigger 2 under the elastic force of the spring 10, thereby driving the push block 4 and the expansion plate 6 to reset. Adipocytes are passed into the injection needle tube 7, and the fat cells flow into the cavity of the subcutaneous tissue from the fat injection hole 13 at the needle end of the injection needle tube 7. When the outer part retreats, and finally the cavity of the subcutaneous tissue is filled with fat cells, the utility model just withdraws from the subcutaneous tissue.

For those skilled in the art, under the premise of not departing from the structure of the utility model, some deformations and improvements can also be made, which should also be regarded as the protection scope of the utility model, and these will not affect the implementation of the utility model Effects and utility of patents.

Claims (5)

1. The mechanical expansion device for the autologous fat injection site, including an injection needle tube, is characterized in that it also includes a front part and a tail part of the device. The front part of the device includes a push block, an expansion plate and a fixed tube; the push block is sleeved on the fixed tube, and The tail of the fixed tube is hinged with a trigger, a push rod is arranged between the trigger and the push block, the expansion plate is hinged with the front of the fixed tube, and a support rod is arranged between the expansion plate and the push block; the tail of the device includes a handle; The tail end of the fixed tube is fixedly connected with the handle, and the handle is provided with a through hole for the injection needle to pass through, and the through hole communicates with the inner hole of the fixed tube; the injection needle is located inside the fixed tube, and the needle of the injection needle is located outside the fixed tube . 2. The autologous fat injection site mechanical expansion device according to claim 1, characterized in that: a first expansion sleeve is provided in the through hole, a second expansion sleeve is provided in the inner hole of the fixing tube, and the injection The needle tube runs through the first expansion sleeve and the second expansion sleeve. 3. The mechanical expansion device for autologous fat injection site according to claim 1 or 2, characterized in that: a reset member is provided between the trigger and the handle to facilitate the reset of the trigger. 4. The mechanical expansion device for autologous fat injection site according to claim 3, characterized in that: the lower part of the trigger is provided with an arc chute for easy pulling of the trigger, and the lower part of the handle is provided with an arc-shaped slot for easy gripping. chute. 5. The autologous fat injection site mechanical expansion device as claimed in claim 4, characterized in that: the tip of the injection needle is a solid tip, and there are multiple fat injection holes on the side wall of the injection needle near the tip, and the fat injection The holes are evenly distributed on the injection needle tube in the circumferential direction, and the grease injection holes communicate with the inner hole of the injection needle tube.