WO1994018895A1 - Machine de prelevement automatique de la peau a l'aide d'une depression - Google Patents

Machine de prelevement automatique de la peau a l'aide d'une depression Download PDF

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Publication number
WO1994018895A1
WO1994018895A1 PCT/CN1994/000015 CN9400015W WO9418895A1 WO 1994018895 A1 WO1994018895 A1 WO 1994018895A1 CN 9400015 W CN9400015 W CN 9400015W WO 9418895 A1 WO9418895 A1 WO 9418895A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
machine according
casing
blade
pressure automatic
Prior art date
Application number
PCT/CN1994/000015
Other languages
English (en)
Chinese (zh)
Inventor
Cheng Wang
Original Assignee
Cheng Wang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cheng Wang filed Critical Cheng Wang
Publication of WO1994018895A1 publication Critical patent/WO1994018895A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/322—Skin grafting apparatus
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/30—Surgical pincettes without pivotal connections
    • A61B2017/306—Surgical pincettes without pivotal connections holding by means of suction

Definitions

  • the invention relates to a medical instrument, in particular to a skin extractor used in a surgical skin transplantation operation.
  • the skin-removing machines used in surgical operations are nothing more than manual, electric, and drum-type. Some people have also designed the freezing type.
  • the prior art there are always shortcomings in various aspects. They are mainly due to the shrinkage of the removed epidermis, uneven thickness of the edges, and the difficulty of planting the epidermis removed by freezing.
  • this application is mainly designed by a method of vacuum absorption of human skin, the removed epidermis does not shrink and easy to live
  • the negative pressure cavity is independently set under the hood of the conveyor.
  • the object of the present invention is to provide a skin removal machine which can easily meet the hygienic requirements of surgery and can improve the overall quality of skin removal.
  • the technical solution adopted by the present invention is: a negative pressure automatic peeling machine, which has a negative pressure cavity that absorbs skin and a blade for cutting, and is characterized in that the negative pressure cavity is formed by the bottom surface of the housing
  • the inner cavity of the casing is provided with a suction port and a side wall is provided with a vacuum pipe joint to communicate the inside and the outside of the casing;
  • a guide shaft provided in the casing is provided with a movable beam, and a working chamber of a cylinder connected to the movable beam passes through
  • the hose is connected to a pipe joint provided on the casing.
  • the pipe joint can communicate with the external compressed air.
  • the piston rod working due to the introduction of compressed air will drive the blade provided thereon to reciprocate.
  • the piston The lever also pushes the ratchet and pawl machine, and then drives the drag mechanism to pull the movable beam to translate along the guide axis, and the blade moves in parallel with the movable beam for feed movement.
  • a pickup plate Above the suction port, a pickup plate is provided. The reason is that the cuticle is tightly and flatly adsorbed on the picking plate from the suction port, and the plane movement completed by the blade between the picking plate and the suction port is about to cut off the cuticle. In this case, the distance between the blade and the pickup board is constant.
  • the cavity of the skin removal machine is used as the negative pressure cavity, and there is no need to make and install an independent negative pressure cavity.
  • This structure Reasonable simplification makes the manufacturing easier.
  • the blade is installed in the machine. Between the skin pickup and the suction port, the skin around the skin absorbed from the suction port to the pickup panel is no longer held by the machine. Effect, thereby eliminating the influence of human factors, therefore, the shape of the peripheral edge of the removed skin is regular and the thickness is uniform. It also prevents the occurrence of unevenness on the surface of the skin, and the quality of the removed skin is objectively guaranteed.
  • the movement of the blade and the feeding and cutting movement are driven only by an air cylinder, thereby replacing the motor driving method by a pneumatic method, and the driving method is improved; They are not afraid of solution immersion, so the cleaning and disinfection method of whole machine immersed in disinfection solution can be used to easily meet strict surgical hygiene requirements.
  • FIG. 1 is a front view of the present invention
  • FIG. 2 is a right side view of FIG. 1;
  • Fig. 3 is a sectional view taken along A-A in Fig. 1;
  • FIG. 4 is a sectional view taken along the line B-B in FIG. 1;
  • FIG. 5 is a sectional view taken along the line C-C in FIG. 3;
  • Figure 6 is a blade installation diagram
  • Figure 7 is the installation diagram of the flexible rope
  • FIG. 8 is a diagram showing another embodiment of a ratchet claw mechanism
  • FIG. 11 is a schematic diagram of cutting with a pad in accordance with the present invention.
  • the shape of the leather removal machine is a square box-shaped box, with a handle for holding on the upper part, three pipe joints connected to one end of the casing (1), and pressure gas on both sides
  • the pipe joint (23), the middle one is the vacuum pipe joint (22), which can be connected to the compressor and the vacuum pump respectively.
  • 3 and 4 illustrate the overall structure of the present invention.
  • the inner wall of the casing (1) forms a negative pressure cavity (2).
  • a rectangular frame composed of two plate-shaped frame plates (34) and frame beams (35), which lays the frame flat on the casing through the slots on the inner walls of the casing (1) on both sides in FIG. 3 (1) Inner;
  • the two guide shafts (4) are equal in diameter, and their two ends are fixed to two frame plates (34). Referring to FIG. 4, the two guide shafts (4) are symmetrically arranged and parallel to the bottom of the casing. It can be seen from FIG. 3 that a guide seat (5) penetrating the sleeve on the guide shaft (4) is used to support the connection movable beam (6), and a rectangular hole in the lower part of the guide seat (5) is used to fit on the guide shaft.
  • the two working chambers of the cylinder (7) pass through two soft
  • the pipe (24) is connected to two pipe joints (23), and the rod ends of its two piston rods (8) are connected to two vertical knife rods (11), which are located in the middle of the knife rod (11) and the nuts ( 29) Tighten, there are small holes at both ends of the blade (12), through which it is hooked to the lower end of the blade (11); see also Figures 3 and 4, the upper end of the blade (11) extends to the movable beam (6) Both ends are restricted in the notches at both ends, which prevents the blade (12) from rotating around the axis of the piston rod (8) due to skin resistance when cutting the blade (12).
  • the area of the leather plate (20) is larger than the area of the skin suction opening (3), and is a rectangular plate.
  • the two ends of the leather plate (20) are placed at the slots opened at the bottom of the two rack plates (34).
  • the notch can be moved slightly and downwardly.
  • the leather plate (20) is moved up to the highest position, its bottom surface is parallel to the cutting plane of the blade (12), which ensures that the thickness of the cut skin removed is uniform.
  • the skin plate can be taken
  • the thickness of (20) is prepared in various specifications to ensure that the distance between the bottom surface of the leather plate (20) and the cutting plane of the blade (12) meets the requirements of the thickness of the skin when vacuuming the skin.
  • a ratchet and pawl mechanism was first designed, which includes a ratchet hinged on the blade (11).
  • the mandrel (16) is located between the movable beam (6) and the air cylinder (7).
  • the ratchet pawl machine mainly solves the reciprocating movement. Conversion with slewing motion.
  • the present invention also designs a drag mechanism, which is a drag blade (12) following the movable beam (6) and gas red (7) —The mechanism with the same translational movement as the best drag mechanism has two schemes:
  • the first is a rack and pinion mechanism composed of a gear (25) on a mandrel (16) and a rack (26) whose ends are fixed on two frame plates (34).
  • the gear (25) can follow the ratchet (15) synchronous rotation;
  • the flexible rope (27) is a thin steel wire, and its two ends are fixed to two frame boards. (34) on.
  • a coupling support plate (9) is placed flat at both ends of the cylinder body in the direction of the cylinder body of the cylinder (7), and its plate surface is parallel to the movable beam (6).
  • two ratchet pawl mechanisms are designed in the present invention.
  • the U-shaped frame (13) is fixed on the cutter bar (11) by bolts (32) and nuts (31).
  • the two pawls (14) are hinged on the ends of the rods on both sides, and the figure shows a working state where the ratchet pawls are in contact.
  • the ⁇ -type lever (18) The left pawl pushes the left pawl (14) away from the matching ratchet (15).
  • the ratchet has been cut away in the figure, and the right pawl (14) contacts the ratchet (15) under the action of the spring (17). on.
  • the lever (18) is pushed to make it in the other two positions, the previously inoperative ratchet and pawl mechanism starts to work or both mechanisms are in a non-working state.
  • the above-mentioned TT-type lever (18) can be punched out of a book plate, and its crossbars are located in the notches on the upper ends of the rods on both sides of the U-shaped frame (13), as shown in Figure 3.
  • the middle part of one side is composed of three adjacent wavy circular solitary curves, and the positioning shaft (19) passes through it, and the positioning pin (19) is fixed under the cross bar of the shift lever (18) and is connected with the U-shaped frame ( 13)
  • the spring body of the spring (33) is pressed against the positioning pin shaft (19), and its two ends are fixed to the two ends of the bar-shaped hole in the middle of the crossbar of the lever (18) Under the action of the spring (33), an arc curve in the bar-shaped hole on the lever (18) contacts the positioning pin (19), and the lever (18) is well defined in this position. This ensures that the ratchet pawl mechanism works in the selected state, and which ratchet pawl mechanism is required to work, only the position
  • the scheme of taking out the skin-removing plate (20) with the cut skin attached is as follows:
  • one side of the square bottom plate and the bottom of a side wall of the casing (1) are hinged on a single page, on the opposite side It is fixed and the seal is filled at the joint of the two, so that the normal working of the negative pressure cavity can be guaranteed.
  • the size and shape of the suction port (3) on the bottom plate can be designed according to the needs of the operation.
  • FIG 6 shows the installation structure of the blade (12).
  • the two ends of the blade (12) have small square holes; the lower end of the left blade (11) has a slightly convex square table, and its sides and the lower end of the right blade (11).
  • the lower end of the T-bolt (21) connected to the convex platform is symmetrical and dovetail-shaped.
  • the hexagonal end of the hollow bolt (36) is located on the outside of the frame plate (34), the hollow bolt (36) is provided with a through-hole in the axial direction, and the small diameter section of the thrust circular table (37) starts from the hollow
  • the hexagonal end of the bolt (36) is inserted into its hole, and its circular table surface abuts on the hexagonal end face of the hollow bolt (36).
  • the thrust circular table (37) can rotate in the hole of the hollow screw (36).
  • the steel wire rope as the flexible rope (27) passes through the axial through hole of the hollow bolt (36) and the thrust circular table (37) in order from the inside to the outside of the frame plate (34), and from the thrust circular table (37) )
  • the large straight section of the platform body passes through the radially opened through hole and then bends.
  • the ratchet pawl machine described above uses the structure of two pawls to realize the advance and retreat of the blade. Another structure is described below.
  • the bracket (13) is fixed on the knife holder (11) and spans from the side of the guide seat (5).
  • the end of the bracket (13) has a pawl (14), and the bracket (13) Spring on back
  • the coupling shaft (10) is provided with a check pawl (39), and a spring (41) is provided on the check pawl (39). Its claw end is matched with the ratchet wheel (15) and restricts the ratchet wheel (15) to be single. Turn back.
  • the pawl (14) and the check pawl (39) should be separated from the ratchet (15). This is accomplished by setting a dial (40).
  • the dial (40) and ratchet (15) ) And the gear (25) are fixed on a mandrel (16) located between the movable beam (6) and the coupling support plate (9). Push the joystick on the dial (40)
  • the dial (40) rotates and its side pushes the short post (39a) on the backstop claw (39),
  • FIG. 9 There are four hanging pins (44) on the bottom plate (la) of the housing, which are distributed at the four corners of the bottom plate (la).
  • the hook (43), the hanging pin (44) and the solitary hook (43) are linked with each other.
  • the sealing ring (42) is located in a groove at the bottom of the housing (1).
  • the bottom plate (la) of the housing is adsorbed by four vacuum suction cups (46).
  • the suction cups (46) are located at the four corners of the cavity.
  • the suction cups (46) are made of rubber.
  • There is a through hole in the center that communicates with the external vacuum pump source. When the vacuum pump source is turned on, the casing bottom plate (la) is attracted by the suction plate (46). It is attracted to the bottom end surface of the casing (1), and the casing bottom plate (la)
  • a sealing ring (42) is provided between the housing and the housing (1) for sealing.
  • the guide shaft (4) and the frame plate (34) constitute a frame frame, which is placed in the negative pressure cavity, and the two frame plates (34) are fixed to the neck portion of the negative pressure cavity.
  • a pad (45) is provided on the leather plate (20), which faces the suction port (3).
  • This pad (45) is made of non-toxic non-metal material and is easily cut by a blade. Cut it into the corresponding shape according to the surgical requirements.
  • the control system of the negative pressure automatic skinning machine disclosed in the present invention includes an electromagnetic threshold, a control circuit, a vacuum pump, and a compressor.
  • the principle is well known to ordinary engineering technicians. Its implementation is a conventional design, so it will not be repeated here.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Plastic & Reconstructive Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

Machine de prélèvement de peau en vue d'une intervention de greffe de peau. La machine soumet la peau à une aspiration afin de la fixer à une plaque de prélèvement permettant de couper la peau, à l'aide d'un vide crée par une chambre à dépression constituée de la chambre interne du logement de la machine. Une lame coupante se situe entre ladite plaque de prélèvement de peau et un orifice d'aspiration prévu dans la partie inférieure du logement. La lame s'anime d'un mouvement de va-et-vient sous l'action d'un cylindre à air et deux tiges mobiles font avancer la lame. Ladite machine de prélèvement de peau peut être stérilisée sans difficultés et stabilise le mouvement de coupe tout en respectant les exigences rigoureuses en matière d'hygiène, et en améliorant la qualité de toute la peau prélèvée.
PCT/CN1994/000015 1993-02-23 1994-02-23 Machine de prelevement automatique de la peau a l'aide d'une depression WO1994018895A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 93102088 CN1045530C (zh) 1993-02-23 1993-02-23 负压自动取皮机
CN93102088.3 1993-02-23

Publications (1)

Publication Number Publication Date
WO1994018895A1 true WO1994018895A1 (fr) 1994-09-01

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ID=4983937

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Application Number Title Priority Date Filing Date
PCT/CN1994/000015 WO1994018895A1 (fr) 1993-02-23 1994-02-23 Machine de prelevement automatique de la peau a l'aide d'une depression

Country Status (2)

Country Link
CN (1) CN1045530C (fr)
WO (1) WO1994018895A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003039382A3 (fr) * 2001-11-05 2004-01-08 Medgenics Inc Systeme automatise ferme pour proteinotherapie tissulaire
EP2936984A1 (fr) * 2003-05-01 2015-10-28 Medgenics, Inc. Appareil et procédé pour récolter un micro-organe dermique
CN109893343A (zh) * 2019-03-26 2019-06-18 广州市兴世机械制造有限公司 一种卫生用品的转移变向装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7651507B2 (en) * 2003-03-03 2010-01-26 Kci Licensing, Inc. Tissue processing system
CN101601598B (zh) * 2008-06-12 2010-11-03 张磊 一种表皮分离机
CN102871708B (zh) * 2012-10-26 2015-02-18 元文勇 一种可调式微型取皮植皮机
WO2014152346A1 (fr) * 2013-03-15 2014-09-25 MoMelan Technologies, Inc. Greffe de peau utilisant des micro-vésicules
US10463392B2 (en) * 2013-12-31 2019-11-05 Kci Licensing, Inc. Fluid-assisted skin graft harvesting
CN106264746B (zh) * 2016-08-10 2019-11-29 中国人民解放军总医院 一种拉皮器以及皮肤拉拢装置
CN114344041B (zh) * 2022-01-06 2023-07-21 谌丽萍 医疗美容烧伤整形手术架
CN114344040B (zh) * 2022-01-06 2023-07-14 陕西省人民医院 一种烧伤整形医学美容外科智能型手术架

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1736246A (en) * 1929-02-25 1929-11-19 Vilray P Blair Skin-graft surgical instrument
US2428018A (en) * 1946-06-27 1947-09-30 Eidam Carl Louis Dermatome
US2590299A (en) * 1948-09-20 1952-03-25 Douglas Beverly Apparatus for removing human skin for grafting purposes
US2787272A (en) * 1953-02-02 1957-04-02 Allen & Hanburys Ltd Dermatomes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1736246A (en) * 1929-02-25 1929-11-19 Vilray P Blair Skin-graft surgical instrument
US2428018A (en) * 1946-06-27 1947-09-30 Eidam Carl Louis Dermatome
US2590299A (en) * 1948-09-20 1952-03-25 Douglas Beverly Apparatus for removing human skin for grafting purposes
US2787272A (en) * 1953-02-02 1957-04-02 Allen & Hanburys Ltd Dermatomes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003039382A3 (fr) * 2001-11-05 2004-01-08 Medgenics Inc Systeme automatise ferme pour proteinotherapie tissulaire
CN100374085C (zh) * 2001-11-05 2008-03-12 迈德詹尼克斯公司 制备皮肤移植物的方法和装置以及由此制备的移植物
EP2936984A1 (fr) * 2003-05-01 2015-10-28 Medgenics, Inc. Appareil et procédé pour récolter un micro-organe dermique
CN109893343A (zh) * 2019-03-26 2019-06-18 广州市兴世机械制造有限公司 一种卫生用品的转移变向装置
CN109893343B (zh) * 2019-03-26 2023-07-07 广州市兴世机械制造有限公司 一种卫生用品的转移变向装置

Also Published As

Publication number Publication date
CN1045530C (zh) 1999-10-13
CN1078879A (zh) 1993-12-01

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