Device for carbon dioxide fractional laser scar removal and internal injection of scar medication

Abstract

The present invention discloses a device for internal drug injection of scars using carbon dioxide fractional laser scar removal, comprising a negative pressure pumping cylinder, a drug tap, and a scar patch. The negative pressure pumping cylinder comprises a cylinder body, a partition tube, an inner pumping rod, an inner piston, an outer pumping rod, an outer piston, and a handle. The drug tap comprises a tap body and a needle, the needle being fixed to the tap body vertically and extending therethrough. The tap body is provided with a vent. The tap body can be detachably fixed below the pressure pumping cylinder. The scar patch comprises a patch connecting portion, a pressing sealing membrane, and a scar enclosing cavity. The scar enclosing cavity is provided vertically and extending therethrough in the middle of the scar patch. The upper end of the middle portion of the scar patch can be detachably fixed below the pressure pumping cylinder, so that the push injection one-way valve and the negative pressure one-way valve are simultaneously connected to the scar enclosing cavity. The scar patch is fixed with a pressing sealing membrane on its lower surface, and the pressing sealing membrane can be hermetically attached to the skin. The present invention has the advantage of enabling drug solution to more easily enter the scar wound.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a device for injecting medicine into scars using carbon dioxide fractional laser scar removal. Background Art

[0002] The CO2 fractional laser is a gas laser that works by the principle of "focal photothermal effect." It generates an array of tiny beams that, when applied to the skin, create multiple three-dimensional, cylindrical micro-thermal injury zones. Each micro-injury zone is surrounded by intact normal tissue, where keratinocytes can rapidly migrate, allowing for rapid healing.

[0003] The main mechanism of carbon dioxide fractional laser scar removal is to induce apoptosis of scar fibroblasts by vaporizing and inhibiting the vascular tissue within the scar.

[0004] To further accelerate scar fibroblast apoptosis, after a fractional CO2 laser has created an array of holes in the scar, medication should be administered. For optimal results, the medication solution should be completely injected into the scar holes, allowing the scar tissue to fully absorb the solution and accelerate fibroblast apoptosis. However, due to the depth of scar holes, the medication solution is easily blocked by the air inside the holes and cannot penetrate the wound. It can only be applied to the surface of the scar, which reduces its effectiveness. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and to provide a device for injecting medicine into the scar using carbon dioxide fractional laser scar removal, which can make the medicine liquid enter the scar hole more easily.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is:

[0007] A device for internal injection of scars using carbon dioxide fractional laser scar removal includes a negative pressure injection barrel, a medicine tap, and a scar patch. The negative pressure injection barrel includes a barrel body, a partition tube, an inner pull rod, an inner piston, an outer pull rod, an outer piston, and a handle. The barrel body is a hollow cylindrical structure with a closed lower end and an open upper end. The partition tube is concentrically fixed in the barrel body, dividing the inner cavity of the barrel body into an inner push injection chamber and an outer negative pressure chamber. The inner piston seal is slidably arranged in the inner push injection chamber, and the outer piston seal is slidably arranged in the outer negative pressure chamber. The lower end of the inner pull rod is fixedly connected to the inner piston, and the upper end is connected to the handle. The lower end of the outer pull rod is fixedly connected to the outer piston, and the upper end is connected to the handle. The handle is located above the barrel. A push-in injection check valve is provided at the bottom of the inner push-in injection chamber. The push-in injection check valve allows the liquid in the inner push-in injection chamber to flow out from the push-in injection check valve, and vice versa. A negative pressure check valve is provided at the bottom of the outer negative pressure chamber. The negative pressure check valve allows the outside gas to enter the outer negative pressure chamber from the negative pressure check valve, and vice versa. The inner piston is provided with an inner piston check valve, and the gas can The air in the air is passed through the one-way valve of the outer piston and the air is passed through the one-way valve of the outer piston, and the air in ... The negative pressure one-way valve is docked to connect the negative pressure one-way valve with the outside world. The scar patch includes a patch connecting part, a pressing sealing film and a scar enclosing cavity. The scar enclosing cavity is arranged in the middle of the scar patch from top to bottom. The upper end of the middle part of the scar patch can be detachably fixed under the pressure and suction cylinder, so that the push one-way valve and the negative pressure one-way valve are connected with the scar enclosing cavity at the same time. The lower surface of the scar patch is fixed with a pressing sealing film, which can be sealed and attached to the skin, so that the scar enclosing cavity is enclosed on the carbon dioxide fractional laser scar.

[0008] To optimize the above technical solutions, specific measures taken also include:

[0009] The above-mentioned pressing sealing film is a silicone film.

[0010] The aforementioned push-in one-way valve, negative pressure one-way valve, inner piston one-way valve and outer piston one-way valve are all diaphragm one-way valves.

[0011] The above-mentioned inner push injection chamber is provided with one or two push injection one-way valves, and the outer negative pressure chamber is provided with two negative pressure one-way valves.

[0012] The upper surface of the patch connecting portion is provided with anti-slip grooves.

[0013] The outer surface of the lower end of the above-mentioned barrel is provided with a docking insert ring, and the tap body and the upper end of the middle part of the scar patch are both sealed and docked with the barrel by being sleeved on the docking insert ring.

[0014] The patch connection portion is made of transparent plastic.

[0015] The cylinder body and the partition tube are both made of transparent materials, and a scale is provided on the partition tube.

[0016] The present invention has the following advantages:

[0017] The present invention is a device for injecting medicine into a scar after carbon dioxide fractional laser scar treatment. By combining a negative pressure pumping tube with a medicine tap, a medicine liquid can be drawn into the injection cavity in the negative pressure pumping tube. The medicine tap is then removed, and the negative pressure pumping tube is combined with a scar patch. The scar patch is pressed tightly around the scar, so that the array of wound holes on the scar is sealed within the scar enclosure cavity. By pulling up the handle of the negative pressure pumping tube, the negative pressure pumping tube applies negative pressure to the scar enclosure cavity, placing the wound holes on the scar in a negative pressure state. Simultaneously, the bottom of the wound holes is also sucked up slightly, reducing the depth of the wound holes. The handle of the negative pressure pumping tube is then pressed down to inject the medicine liquid into the scar enclosure cavity. Due to the negative pressure state of the wound holes on the scar, the medicine liquid more easily enters the wound holes on the scar, thereby improving the therapeutic effect of the medicine liquid.

[0018] The present invention realizes the whole process of vacuum pumping and drug injection by cooperating with a plurality of one-way valves through a negative pressure pumping and injection cylinder, and has a simple and delicate structure and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the negative pressure injection tube of the present invention;

[0020] Figure 2 It is a structural diagram of the medicine tap;

[0021] Figure 3 is a schematic diagram of the structure of the scar patch;

[0022] Figure 4 is a top view of the inner piston and the outer piston;

[0023] Figure 5 It is a usage state diagram of the present invention.

[0024] The accompanying drawings are marked as: negative pressure extraction cylinder 1, cylinder body 11, inner injection chamber 11a, injection one-way valve 11b, outer negative pressure chamber 11c, negative pressure one-way valve 11d, partition tube 12, inner pull rod 13, inner piston 14, inner piston one-way valve 14a, outer pull rod 15, outer piston 16, outer piston one-way valve 16a, handle 17, docking ring 18, medicine tap 2, tap body 21, needle 22, vent 23, scar patch 3, patch connecting part 31, pressing sealing film 32, scar enclosing cavity 33. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

[0026] The present invention provides a device for internal injection of scars using carbon dioxide fractional laser scar removal, which comprises a negative pressure injection barrel 1, a medicine tap 2, and a scar patch 3. The negative pressure injection barrel 1 comprises a barrel body 11, a partition tube 12, an inner pull rod 13, an inner piston 14, an outer pull rod 15, an outer piston 16, and a handle 17. The barrel body 11 is a hollow cylindrical structure with a closed lower end and an open upper end. The partition tube 12 is concentrically fixed in the barrel body 11, dividing the inner cavity of the barrel body 11 into an inner push injection chamber 11a and an outer negative pressure chamber 11c. The inner piston 14 is sealingly and slidably arranged in the inner push injection chamber 11a, and the outer piston 16 is sealingly and slidably arranged in the outer negative pressure chamber 11c. The lower end of the inner pull rod 13 is fixedly connected to the inner piston 14, and the upper end is connected to the handle 17. The lower end of the outer pull rod 15 is fixedly connected to the outer piston 16, and the upper end is connected to the handle 17. The handle 17 is located above the barrel 11. A push-injection check valve 11b is provided at the bottom of the inner push-injection chamber 11a. The push-injection check valve 11b allows the liquid in the inner push-injection chamber 11a to flow out from the push-injection check valve 11b, and vice versa. A negative pressure check valve 11d is provided at the bottom of the outer negative pressure chamber 11c. The negative pressure check valve 11d allows the external gas to enter the outer negative pressure chamber 11c from the negative pressure check valve 11d, and vice versa. The inner piston 14 is provided with an inner piston check valve Valve 14a, gas can flow from the upper side of the inner piston one-way valve 14a to the lower side of the inner piston one-way valve 14a, but not vice versa. The outer piston 16 is provided with an outer piston one-way valve 16a, and gas can flow from the lower side of the outer piston one-way valve 16a to the upper side of the outer piston one-way valve 16a, but not vice versa. The medicine tap 2 includes a tap body 21 and a needle 22. The needle 22 is fixed on the tap body 21 through the upper and lower parts. A vent 23 is provided on the tap body 21. The tap body 21 can be detachably fixed to the bottom of the pressure suction cylinder 1. At this time, the upper end of the needle 22 can just pass through the push injection one-way valve 11b, so that the inner push injection cavity 11a is connected to the outside through the needle 22. The vent 23 is sealed and docked with the negative pressure one-way valve 11d, so that the negative pressure one-way valve 11d is connected to the outside world. The scar patch 3 includes a patch connecting part 31, a pressing sealing film 32 and a scar enclosing cavity 33. The scar enclosing cavity 33 is arranged in the middle of the scar patch 3 from top to bottom. The upper end of the middle part of the scar patch 3 can be detachably fixed under the pressure and suction tube 1, so that the injection one-way valve 11b and the negative pressure one-way valve 11d are connected to the scar enclosing cavity 33 at the same time. A pressing sealing film 32 is fixed on the lower surface of the scar patch 3, and the pressing sealing film 32 can be sealed and attached to the skin, so that the scar enclosing cavity 33 is enclosed on the carbon dioxide fractional laser scar.

[0027] In the embodiment, the pressing sealing film 32 is a silicone film.

[0028] In the embodiment, the push injection one-way valve 11b, the negative pressure one-way valve 11d, the inner piston one-way valve 14a and the outer piston one-way valve 16a are all diaphragm one-way valves.

[0029] In the embodiment, the inner push injection chamber 11a is provided with one or two push injection one-way valves 11b, and the outer negative pressure chamber 11c is provided with two negative pressure one-way valves 11d.

[0030] In the embodiment, the upper surface of the patch connecting portion 31 is provided with anti-slip grooves.

[0031] In the embodiment, a docking ring 18 is provided on the outer surface of the lower end of the barrel body 11 , and the tap body 21 and the upper end of the middle portion of the scar patch 3 are both sealed and docked with the barrel body 11 by being sleeved on the docking ring 18 .

[0032] In the embodiment, the patch connecting portion 31 is made of transparent plastic.

[0033] In the embodiment, the barrel 11 and the partition tube 12 are both made of transparent materials, and a scale is provided on the partition tube 12.

[0034] The method of use of the present invention is as follows:

[0035] After CO2 fractional laser scar removal, the scar tissue on the patient's skin forms an array of perforations. Medication is then injected into the scar tissue, ensuring that the medication penetrates as deeply as possible into the perforations to promote scar necrosis. The medication typically consists of a combination of glucocorticoids and 5-fluorouracil. The device described in this invention can effectively increase the amount of medication absorbed by the perforations in the scar tissue.

[0036] First, dock the upper part of the medicine tap 2 with the negative pressure injection cylinder 1 through the docking ring 18, and the upper end of the needle 22 directly pushes open the injection check valve 11b to enter the inner injection chamber 11a, then insert the lower end of the needle into the liquid storage bottle containing the liquid medicine, pull up the handle 17, and suck the liquid medicine in the liquid storage bottle into the inner injection chamber 11a, and the negative pressure check valve 11d is docked with the vent 23, and the outer negative pressure chamber 11c inhales a certain amount of air, then remove the medicine tap 2, and install the scar patch 3 under the negative pressure injection cylinder 1 through the docking ring 18, press the scar patch 2 around the scar by hand, so that the hole array on the scar is sealed in the scar enclosure chamber 33, pull up the handle 17, the inner piston 14 and the outer piston 16 both move up, and the injection check valve 11b is closed, the negative pressure one-way valve 11d is opened, the inner piston one-way valve 14a is opened, and the outer piston one-way valve 16a is closed, thereby pumping the gas in the scar enclosure cavity 33 into the outer negative pressure cavity 11c. The scar enclosure cavity 33 is in a negative pressure state. The doctor observes the state of the scar being pumped up. After it is pumped up to a certain extent, the handle 17 is pressed down, and both the inner piston 14 and the outer piston 16 move downward. The push injection one-way valve 11b is opened, the negative pressure one-way valve 11d is closed, the inner piston one-way valve 14a is closed, and the outer piston one-way valve 16a is opened, thereby injecting the liquid medicine in the inner push injection cavity 11a into the scar enclosure cavity 33. Due to the negative pressure state of the scar wound hole, the liquid medicine can more easily enter the scar wound hole, thereby improving the therapeutic effect of the liquid medicine. After the injection is completed, the scar patch 3 can be torn off from the skin.

[0037] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A device for injecting medicine into scars after carbon dioxide fractional laser scar removal, characterized in that: The device comprises a negative pressure extraction cylinder (1), a medicine tap (2) and a scar patch (3). The negative pressure extraction cylinder (1) comprises a cylinder body (11), a partition tube (12), an inner extraction rod (13), an inner piston (14), an outer extraction rod (15), an outer piston (16) and a handle (17). The cylinder body (11) is a hollow cylindrical structure with a closed lower end and an open upper end. The partition tube (12) is concentrically fixed in the cylinder body (11), dividing the inner cavity of the cylinder body (11) into an inner injection cavity (11a) and an outer negative pressure cavity (11c). The inner piston (14) is sealed and slidably arranged in the inner injection cavity (11a), and the outer piston (16) is sealed and slidably arranged in the outer negative pressure cavity (11c). The lower end of the inner extraction rod (13) is connected to the inner piston. (14) is fixedly connected, and the upper end is connected to the handle (17). The lower end of the outer pull rod (15) is fixedly connected to the outer piston (16), and the upper end is connected to the handle (17). The handle (17) is located above the barrel (11). A push injection check valve (11b) is provided at the bottom of the inner push injection chamber (11a). The push injection check valve (11b) allows the liquid in the inner push injection chamber (11a) to flow out from the push injection check valve (11b), otherwise it is not allowed. A negative pressure check valve (11d) is provided at the bottom of the outer negative pressure chamber (11c). The negative pressure check valve (11d) allows the external gas to enter the outer negative pressure chamber (11c) from the negative pressure check valve (11d), otherwise it is not allowed. An inner piston check valve (14a) is provided on the inner piston (14). The gas can The gas flows from the upper side of the inner piston one-way valve (14a) to the lower side of the inner piston one-way valve (14a), but not vice versa. The outer piston (16) is provided with an outer piston one-way valve (16a), and the gas can flow from the lower side of the outer piston one-way valve (16a) to the upper side of the outer piston one-way valve (16a), but not vice versa. The medicine tap (2) includes a tap body (21) and a needle (22). The needle (22) is fixed on the tap body (21) through the upper and lower parts. The tap body (21) is provided with an air vent (23). The tap body (21) can be detachably fixed to the lower side of the negative pressure pumping cylinder (1). At this time, the upper end of the needle (22) can just pass through the injection one-way valve (11b), so that the inner injection cavity (11a) is connected to the outside through the needle (22). The vent (23) is connected to the negative pressure one-way valve (11d), so that the negative pressure one-way valve (11d) is connected to the outside world. The scar patch (3) includes a patch connecting portion (31), a pressing sealing film (32) and a scar enclosing cavity (33). The scar enclosing cavity (33) is arranged in the middle of the scar patch (3) in a vertically continuous manner. The upper end of the middle of the scar patch (3) can be detachably fixed below the negative pressure extraction tube (1), so that the injection one-way valve (11b) and the negative pressure one-way valve (11d) are connected to the scar enclosing cavity (33) at the same time. A pressing sealing film (32) is fixed on the lower surface of the scar patch (3), and the pressing sealing film (32) can be sealed and attached to the skin, so that the scar enclosing cavity (33) is enclosed on the carbon dioxide fractional laser scar.The push injection check valve (11b), the negative pressure check valve (11d), the inner piston check valve (14a), and the outer piston check valve (16a) are all diaphragm check valves; the inner push injection chamber (11a) is provided with one or two push injection check valves (11b), and the outer negative pressure chamber (11c) is provided with two negative pressure check valves (11d).

2. The device for internal injection of scars after carbon dioxide fractional laser scar removal according to claim 1 is characterized by: The upper surface of the patch connecting portion (31) is provided with anti-slip grooves.

3. The device for injecting medicine into scars after carbon dioxide fractional laser scar removal according to claim 2, characterized in that: The outer surface of the lower end of the barrel (11) is provided with a docking insert ring (18), and the tap body (21) and the upper end of the middle portion of the scar patch (3) are both sealed and docked with the barrel (11) by being sleeved on the docking insert ring (18).

4. The device for injecting medicine into scars after carbon dioxide fractional laser scar removal according to claim 3, characterized in that: The patch connecting portion (31) is made of transparent plastic.

5. The device for injecting medicine into scars after carbon dioxide fractional laser scar removal according to claim 4, characterized in that: The barrel (11) and the partition tube (12) are both made of transparent materials, and a scale is provided on the partition tube (12).

Images