CN-121512636-B - Automatic dermis transplanting skin grafting tablet preparation machine

CN121512636BCN 121512636 BCN121512636 BCN 121512636BCN-121512636-B

Abstract

The invention belongs to the technical field of medical equipment, and discloses an automatic dermis graft preparation machine which is used for preparing a net of a taken dermis tissue slice to form a graft, and comprises a fixing frame, wherein a dermis positioning module, a peeling module and a net preparation module are arranged on the fixing frame, the dermis positioning module is movably connected with the fixing frame and is provided with an end part for clamping dermis tissue and limiting the dermis tissue on the fixing frame, the peeling module is provided with a dermis cutter which corresponds to the dermis positioning module and contacts with limited dermis tissue to cut skin, the epidermis is removed by the dermis cutter and a cut skin tissue is formed, and the net preparation module is provided with a cutting roller and a pressing roller which are relatively attached and rolled, and the cut skin tissue which is butted with the skin cutter is cut through a gap between the cutting roller and the pressing roller to form the graft. The invention provides an automatic dermis-transplanting skin-grafting sheet preparation machine which can automatically fix dermis tissues and continuously finish epidermis removal and skin-grafting sheet screening operation.

Inventors

DONG HONGFEI
HUANG QIAN
ZHANG RUIXUE
ZHANG YANBIAO
LI XIANHUI
HUANG BO

Assignees

中国人民解放军西部战区总医院

Dates

Publication Date: 20260512
Application Date: 20260115

Claims (6)

1. An automatic dermis transplanting skin grafting preparation machine is used for making a net for a taken-down dermis tissue slice to form transplanting skin and is characterized by comprising a fixing frame (1), wherein the fixing frame (1) is provided with: the dermis positioning module is movably connected with the fixing frame (1) and is provided with an end part for clamping dermis tissues and limiting the dermis tissues on the fixing frame (1); A peeling module having a skin cutter (4) corresponding to the dermis positioning module and contacting the limited dermis tissue to cut the skin, the skin cutter (4) removing the epidermis and forming the cut dermis tissue, and The net making module is provided with a cutting roller (2) and a pressing roller (3) which are relatively attached and rolled, and skin-cutting tissues which are butted and come out of the skin cutter (4) are cut through the gap between the cutting roller (2) and the pressing roller (3) to form skin-grafting; The peeling machine also comprises a moving module arranged on the fixing frame (1), wherein the moving module drives the dermis positioning module and/or the peeling module to contact and relatively displace to peel; The leather cutting device is characterized in that a sliding frame (5) is arranged on the fixing frame (1), a mounting frame (6) for fixing the leather cutting device (4) is arranged on the sliding frame (5), the mounting frame (6) is connected with the sliding frame (5) in a sliding mode, and an electric mechanism for pushing the fixing frame (1) to slide along the length direction of leather tissues clamped by the leather positioning module is arranged on the sliding frame (5); The sliding frame (5) is of at least one track structure arranged on the inner side of the fixed frame (1), and the electric mechanism comprises a screw rod mechanism or a belt conveying mechanism which is arranged in the sliding frame (5) and a motor which is arranged at the end part of the sliding frame (5) and drives; The skin cutter (4) is a handheld electric skin cutter powered by the outside and comprises a cutter head and a handle, the mounting frame (6) comprises a pressing part (601) for providing downward pressure towards the direction of dermal tissue from two ends of the back side of the cutter head, and an operation part (602) for clamping the handle, the operation part (602) is provided with an electric triggering part corresponding to a bar-shaped switch arranged on the handle, and the electric triggering part is synchronously started and stopped with the electric mechanism; The dermis tissue epidermis layer is fixed downwards, a pressing part (601) and an operating part (602) are arranged at a groove in the middle of the mounting frame (6), the pressing part (601) is a mechanism with two doors capable of being opened in a rotating mode to two sides, the inner size of the groove is the same as the outer size of a cutter head of the dermis cutter (4), the cutter head is arranged in the groove downwards, and when the lower end of the cutter head contacts dermis tissue, the cutter head part is not separated from the inner wall of the groove and continuously contacts and limits with the inner wall of the groove; the two pressing parts (601) on the groove turn over and buckle and fix the two back ends of the T-shaped cutter head, and continuously give the cutter head a downward pressure to the dermis tissues; The cutting roller (2) and the pressing roller (3) are arranged on the mounting frame (6) and correspond to the positions for fixing the leather cutter (4), the cutting roller (2) is in transmission connection with the pressing roller (3) through an end gear, a motor is arranged at the other end of the cutting roller (2) to drive the cutting roller to rotate, an adjusting frame is arranged on the mounting frame (6), the cutting roller (2) and the pressing roller (3) are both rotatably arranged on the adjusting frame, the adjusting frame horizontally adjusts the distance between the positions for arranging the leather cutter (4), the feeding end of a gap between the cutting roller (2) and the pressing roller (3) is close to the discharging end of a cutter head of the leather cutter (4), the net making module and the leather cutter (4) are synchronously displaced, and the end of a leather cutting tissue from the leather cutter (4) enters the net making module.
2. An automatic dermis-removing and skin-grafting sheet preparation machine according to claim 1, characterized in that the bottom of the fixing frame (1) is provided with a flat surface, the dermis positioning module comprises a group of clamping mechanisms (7) arranged on the flat surface and a boss (8) arranged between the clamping mechanisms (7); The dermis tissue is clamped by the clamping mechanisms (7) at two ends in the length direction, the epidermis layer is downwards fixed on the boss (8), and the boss (8) bulges to tension the dermis tissue to form a protruding part which is contacted with the skin cutter (4).
3. The automatic dermis-removing and skin-grafting sheet preparation machine according to claim 1, wherein the dermis positioning module is a positioning roller (9) rotatably connected to the fixing frame (1), and a clamping groove (10) arranged on the surface of the positioning roller (9), one end of the dermis tissue in the length direction is fixed in the clamping groove (10), and the cutting end part of the dermis cutter (4) is elastically attached to the surface of the positioning roller (9) and drives the dermis tissue to rotate and cut to form the dermis-cutting tissue by the positioning roller (9).
4. An automatic dermis graft sheet preparation machine according to claim 3, characterized in that the curved surface of the positioning roller (9) except the clamping groove (10) is covered with a soft rubber pad.
5. The machine of any one of claims 1 to 4, wherein the distance between the net forming module and the peeling module is adjustable when the machine is not in operation, and the distance between the net forming module and the peeling module is fixed when the peeling module removes the skin.
6. An automatic dermal graft patch preparation machine according to claim 5, wherein the holder (1) further comprises a feed roll (11) for feeding the screening module with backing paper, and the cut skin tissue falls out of the peeling module onto the backing paper and is cut with the backing paper into the screening module.

Description

Automatic dermis transplanting skin grafting tablet preparation machine Technical Field The invention belongs to the technical field of medical equipment, and particularly relates to an automatic dermis-transferring skin-grafting sheet preparation machine. Background When treating skin wound in clinical departments such as burn department, the dermis tissue is often required to be obtained from a patient, and the dermis tissue is prepared into a transplanted skin sheet for wound repair. The dermis tissue is used for preparing the net, so that the transplanted dermis sheet after net preparation is easier to attach to the wound surface, and a proper environment can be provided for wound surface healing, thereby helping granulation tissue growth. In the clinic, an electric skin taking knife is mainly used for obtaining the dermal tissue, and a manual net making machine is used for preparing the skin transplanting sheet, but partial epidermis layer of the dermal tissue taken down by the electric skin taking knife needs to be removed firstly, and the step is mainly finished manually by a doctor holding a surgical knife. As presented above, the existing dermal tissue treatment mode has the defects that the efficiency of removing the epidermal layer by using a surgical knife is very low, the operation method and the tolerance of a doctor are very high, and the effect of removing the epidermal layer can be affected by slightly not paying attention to the strength or the angle during the operation, so that the quality of the following transplanted skin sheets is affected. Meanwhile, the existing electric skin taking knife and manual net making machine are mutually independent devices, tissue needs to be transferred between the two devices when the dermis tissue is treated, and the whole process is incoherent, so that the treatment efficiency is further reduced, and the risk of pollution to the dermis tissue is increased. Disclosure of Invention In order to solve the problems in the prior art, the invention provides an automatic dermis-transplanting skin-grafting sheet preparation machine which can automatically fix dermis tissues and continuously finish the epidermis removal and skin-grafting sheet screening operation. The technical scheme adopted by the invention is as follows: In a first aspect, the present invention provides an automatic dermal tissue graft preparation machine for forming a removed dermal tissue slice into a mesh for graft, comprising a fixing frame, wherein the fixing frame is provided with: the dermis positioning module is movably connected with the fixing frame and is provided with an end part for clamping dermis tissues and limiting the dermis tissues on the fixing frame; a peeling module having a skin cutter corresponding to the dermis positioning module and contacting limited dermis tissue to cut skin, the skin cutter removing epidermis and forming cut skin tissue, and The net making module is provided with a cutting roller and a pressing roller which are relatively attached and rolled, and the skin cutting tissue which is butted and comes out of the skin cutter is cut through the gap between the cutting roller and the pressing roller to form the skin transplanting and grafting. With reference to the first aspect, the present invention provides a first implementation manner of the first aspect, and further includes a moving module disposed on the fixing frame, where the moving module drives the dermis positioning module and/or the peeling module to contact and relatively displace to peel. With reference to the first embodiment of the first aspect, the present invention provides a second embodiment of the first aspect, wherein the fixing frame is provided with a carriage, the carriage is provided with a mounting frame for fixing the skin cutter, the mounting frame is slidably connected with the carriage, and the carriage is provided with an electric mechanism for pushing the fixing frame to slide along the length direction of the dermis tissue clamped by the dermis positioning module. With reference to the second implementation manner of the first aspect, the present invention provides a third implementation manner of the first aspect, the carriage is at least one track structure arranged on the inner side of the fixing frame, and the electric mechanism includes a screw mechanism or a belt conveying mechanism built in the carriage, and a motor arranged at the end of the carriage to drive. With reference to the second embodiment of the first aspect, the invention provides a fourth embodiment of the first aspect, wherein the skin cutter is a handheld electric skin cutter powered by the outside, the handheld electric skin cutter comprises a cutter head and a handle, the mounting frame comprises a pressing part for providing downward pressure towards the direction of dermal tissue from two ends of the back side of the cutter head, and an operating part for clamping the handle, the operating part