Continuous negative pressure drum skin grafting machine

Abstract

The present application provides a continuous negative pressure drum skin grafting machine, which includes: a machine frame member, a guide rod member, a suction cup member, and a tool rest member; the machine frame member includes: a first cylinder, a connecting plate, an inner arc-shaped partition plate, and an outer arc-shaped partition plate; the suction cup member includes a suction cup body, a negative pressure connection port, and a leaf spring; the tool rest member includes: a first cylinder, a first tool rest rod, a second tool rest rod, and a blade; by providing a suction cup member capable of sliding movement, under the push of the tool rest member, the suction cup member moves to form suction on a new skin area, and the skin grafting operation does not need to be interrupted.

Description

Technical Field

[0001] The present application relates to a skin grafting machine or a skin grafting drum, and particularly to a negative pressure type skin grafting machine. Background Art

[0002] In skin grafting surgery, it is necessary to remove the skin from one part of the patient and then transplant it to the required position, such as a burn position or a position that needs plastic surgery. A common skin grafting machine is also called a skin grafting drum. The drum surface is bonded to the skin area to be removed through an adhesive, and then the skin bonded to the drum surface is cut by the blade of the skin grafting machine. This method requires the participation of an adhesive, so it is very troublesome to clean the adhesive on the drum surface after the operation.

[0003] For this reason, CN2212969Y proposes a negative pressure type skin grafting machine, which adsorbs the skin to be cut to the drum surface through negative pressure, thus eliminating the need to use an adhesive. When the area of the skin to be cut is small, the negative pressure type skin grafting machine proposed by CN2212969Y can excellently complete the task. When the area of the skin to be cut is large, the curved drum surface cannot adsorb the entire skin to be removed through negative pressure. If the area of the suction holes formed is large, air leakage will occur, resulting in insufficient negative pressure and inability to firmly adsorb the skin; if the area of the suction holes formed is small, it is necessary to continuously interrupt the suction during the operation and move the part of the drum surface with suction holes so that it adsorbs to the skin at a new position, which makes the operation rather troublesome. Summary of the Invention

[0004] In view of the above problems, the present application aims to propose a continuous negative pressure drum type skin grafting machine, which can continuously cut a large area of skin while maintaining the attraction force without interrupting the suction during the skin grafting process.

[0005] The continuous negative pressure drum type skin grafting machine of the present application includes: a machine frame member, a guide rod member, a suction cup member, and a tool rest member;

[0006] The machine frame member includes: a first cylinder, a connecting plate, an inner circular arc-shaped partition plate, and an outer circular arc-shaped partition plate; the centers of the first cylinder, the inner circular arc-shaped partition plate, and the outer circular arc-shaped partition plate coincide; a predetermined interval is formed between the inner circular arc-shaped partition plate and the outer circular arc-shaped partition plate to form a suction cup member accommodation space; both ends of the inner circular arc-shaped partition plate and the outer circular arc-shaped partition plate are integrally connected together through end plates; the outer circular arc-shaped partition plate forms a plurality of through holes;

[0007] The guide rod member includes a second cylinder, a first guide rod, and a second guide rod; the second cylinder is rotatably installed in the first cylinder; the first guide rod is formed at the first end of the second cylinder, and the second guide rod is formed at the second end of the second cylinder;

[0008] The suction cup member includes a suction cup body, a negative pressure connection port, and a leaf spring; the lower side of the suction cup body is open, and the upper side, left side, right side, front side, and rear side are closed; the negative pressure connection port is formed on the left side or the right side of the suction cup body; the leaf spring is formed into an upwardly convex arc shape and is fixed on the upper side of the suction cup body; the suction cup body is installed in the suction cup member accommodation space and can slide along the arc extension direction of the suction cup member accommodation space; the open lower side of the suction cup body faces the upper side of the outer circular arc partition and closely abuts against the upper side of the outer circular arc partition; the upper side of the suction cup body faces the lower side of the inner circular arc partition, and the leaf spring abuts against the inner circular arc partition; a pair of stoppers are respectively formed on the front side and the rear side of the suction cup body, and a predetermined interval is formed between each pair of stoppers; the first guide rod of the guide rod member is accommodated in the interval between the pair of stoppers on the front side and can slide therein, and the second guide rod of the guide rod member is accommodated in the interval between the pair of stoppers on the rear side and can slide therein.

[0009] The tool holder member includes: a first cylinder, a first tool holder rod, a second tool holder rod, and a blade; the first cylinder is accommodated in the second cylinder and can slide along the axis of the second cylinder; the first end of the first tool holder rod is fixed to the first end of the first cylinder; the first end of the second tool holder rod is fixed to the second end of the first cylinder; the blade is formed into a long strip shape, its first end is fixed to the second end of the first tool holder rod, and its second end is fixed to the second end of the second tool holder rod; a first guide rod pusher is fixed on the first tool holder rod, its extension direction is perpendicular to the extension direction of the first guide rod, and it can be separably supported on the first guide rod; a second guide rod pusher is fixed on the second tool holder rod, its extension direction is perpendicular to the extension direction of the second guide rod, and it can be separably supported on the second guide rod.

[0010] Preferably, the first guide rod and the second guide rod are formed into straight lines.

[0011] Preferably, in the arc extension direction of the inner circular arc partition, a guiding groove is formed on the lower side of the inner circular arc partition, and the convex portion of the leaf spring is accommodated in the guiding groove.

[0012] Preferably, on the suction cup body, a sealing ring is formed along the edge of the open lower side thereof to ensure airtightness between the open lower side of the suction cup body and the outer circular arc partition.

[0013] Preferably, the first guide rod pusher and the second guide rod pusher are on a straight line.

[0014] Preferably, the first guide rod pusher and the second guide rod pusher extend into the space between the first cylinder and the inner circular arc partition.

[0015] The continuous negative pressure drum skin grafting machine of the present application is provided with a suction cup component that can slide. Driven by the knife frame component, the suction cup component moves to form suction on a new skin area without interrupting the skin grafting operation. In addition, the suction cup component can be made smaller, which is beneficial to forming a stronger suction force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view structural schematic diagram of the continuous negative pressure drum skin grafting machine of the present application;

[0017] Figure 2 is Figure 1 the front view structural schematic diagram of the continuous negative pressure drum skin grafting machine after removing the knife frame component;

[0018] Figure 3 is Figure 1 the front view structural schematic diagram of the machine frame component of the continuous negative pressure drum skin grafting machine;

[0019] Figure 4 is Figure 3 the top view structural schematic diagram of the machine frame component;

[0020] Figure 5 is Figure 3 the bottom view structural schematic diagram of the machine frame component;

[0021] Figure 6 is Figure 1 the front view structural schematic diagram of the guide rod component of the continuous negative pressure drum skin grafting machine;

[0022] Figure 7 is Figure 6 the side view structural schematic diagram of the guide rod component;

[0023] Figure 8 is Figure 1 the front view structural schematic diagram of the suction cup component of the continuous negative pressure drum skin grafting machine;

[0024] Figure 9 is Figure 8 the cross-sectional schematic diagram of the suction cup component;

[0025] Figure 10 is Figure 8 the bottom view structural schematic diagram of the suction cup component;

[0026] Figure 11 is Figure 8 the top view structural schematic diagram of the suction cup component;

[0027] Figure 12 is Figure 1 the front view structural schematic diagram of the knife frame component of the continuous negative pressure drum skin grafting machine;

[0028] Figure 13For Figure 12 Schematic side view structure diagram of the knife frame member Specific implementation mode

[0029] Next, the continuous negative pressure drum skin grafting machine of the present application will be described in detail with reference to the accompanying drawings

[0030] The continuous negative pressure drum skin grafting machine of the present application includes: a frame member 10, a guide rod member 20, a suction cup member 30, and a knife frame member 40

[0031] The frame member 10 includes: a first cylinder 11, a connecting plate 12, an inner arc-shaped partition 13, and an outer arc-shaped partition 14; the centers of the first cylinder 11, the inner arc-shaped partition 13, and the outer arc-shaped partition 14 coincide. A predetermined interval is formed between the inner arc-shaped partition 13 and the outer arc-shaped partition 14 to form a suction cup member accommodation space 16. The two ends of the inner arc-shaped partition 13 and the outer arc-shaped partition 14 are integrally connected together through end plates respectively. A plurality of through holes are formed on the outer arc-shaped partition 14, and the plurality of through holes communicate with the suction cup member accommodation space 16

[0032] The guide rod member 20 includes a second cylinder 21, a first guide rod 22, and a second guide rod 23; the second cylinder is rotatably installed in the first cylindrical space 15 of the first cylinder 11; the first guide rod 22 is formed at the first end of the second cylinder 21, and the second guide rod 23 is formed at the second end of the second cylinder 21. The first guide rod 22 and the second guide rod 23 are formed as linear rod bodies, and the cross-section can be rectangular or circular

[0033] The suction cup member 30 includes a suction cup body 31, a negative pressure connection port 32, and a leaf spring 33

[0034] The lower side of the suction cup body 31 is open, and the upper side, left side, right side, front side, and rear side are closed; the negative pressure connection port 32 is formed on the left side or the right side of the suction cup body 31 for connecting a negative pressure source, such as an air pump, to form a negative pressure in the suction cup body 31. The leaf spring 33 is formed in an upwardly convex arc shape and is fixed on the upper side of the suction cup body 31. The suction cup body 31 is installed in the suction cup member accommodation space 16 and can slide along the arc extension direction of the suction cup member accommodation space 16

[0035] The open lower side of the suction cup body 31 faces the upper side of the outer arc-shaped partition 14 and abuts tightly against the upper side of the outer arc-shaped partition 14. The entire edge of the open lower side of the suction cup body 31 abuts tightly against the upper side of the outer arc-shaped partition 14. Thus, the negative pressure in the suction cup body 31 attracts the skin closely attached to the lower side of the outer arc-shaped partition 14 through the through holes on the outer arc-shaped partition 14, so that it is fixed on the lower side of the outer arc-shaped partition 14

[0036] The upper side of the suction cup body 31 faces the lower side of the inner arc-shaped partition 13, and the leaf spring 33 abuts against the inner arc-shaped partition 13, serving to push the opening on the lower side of the suction cup body 31 outward against the outer arc-shaped partition 14 so that it closely adheres to the outer arc-shaped partition 14.

[0037] On the front and rear sides of the suction cup body 31, a pair of stoppers 34 are respectively formed, and a predetermined interval is formed between each pair of stoppers 34; the first guide rod 22 of the guide rod member 20 is received in the interval between the pair of stoppers 34 on the front side and can slide therein, and the second guide rod 23 of the guide rod member 20 is received in the interval between the pair of stoppers 34 on the rear side and can slide therein.

[0038] The knife frame member 40 includes: a first cylinder 41, a first knife rest rod 42, a second knife rest rod 45, and a blade 44; the first cylinder 41 is received in the cylindrical space 24 of the second cylinder 21 and can slide along the axis of the second cylinder 21, whereby the knife frame slides back and forth, driving the blade to move back and forth to smoothly cut the skin.

[0039] The first end of the first knife rest rod 42 is fixed to the first end of the first cylinder 41; the first end of the second knife rest rod 45 is fixed to the second end of the first cylinder 41; the blade 44 is formed in a long strip shape, its first end is fixed to the second end of the first knife rest rod 42, and its second end is fixed to the second end of the second knife rest rod 45.

[0040] A first guide rod push rod 43 is fixed to the first knife rest rod 42, its extending direction is perpendicular to the extending direction of the first guide rod 22, and it can be separably supported on the first guide rod 22; a second guide rod push rod 46 is fixed to the second knife rest rod 45, its extending direction is perpendicular to the extending direction of the second guide rod 23, and it can be separably supported on the second guide rod 23. The functions of the first guide rod push rod 43 and the second guide rod push rod 46 are, under the operation of the operator, to push the first guide rod 22 and the second guide rod 23 to rotate, and the first guide rod 22 and the second guide rod 23 push the stoppers 34 of the suction cup member 30 to push the suction cup member 30 to slide, thereby enabling the suction cup member 30 to form an attracting and fixing effect on the skin at different positions.

[0041] In the arc extending direction of the inner arc-shaped partition 13, a guiding groove (not shown in the figure) is formed on the lower side of the inner arc-shaped partition 13, and the protruding part of the leaf spring 33 is received in this guiding groove, which is more conducive to the positioning of the suction cup member in the suction cup member accommodation space.

[0042] On the suction cup body 31, a sealing ring (not shown in the figure) is formed along the edge of the opening on its lower side to ensure airtightness between the opening on the lower side of the suction cup body 31 and the outer arc-shaped partition 14.

[0043] The first guide rod push rod 43 and the second guide rod push rod 46 are on a straight line.

[0044] The first guide rod push rod 43 and the second guide rod push rod 46 extend into the space 17 between the first cylinder 11 and the inner arc-shaped partition 13.

[0045] During use, press the outer arc-shaped partition against the skin area to be taken. After connecting the negative pressure source, negative pressure is formed in the suction cup body. The negative pressure acts on the skin at the corresponding position through the through holes of the outer arc-shaped partition, thereby fixing the skin on the outer arc-shaped partition. At this time, the tool rest can be pushed forward and backward to cut the skin closely fixed on the outer arc-shaped partition. As the tool rest rotates, the first guide rod push rod and the second guide rod push rod on the tool rest push the first guide rod and the second guide rod. The first guide rod and the second guide rod push the stopper of the suction cup member, so that the suction cup member slides and moves to a new position to form suction fixation on the skin at the new position. During the whole process, there is no need to interrupt, and skin can be taken continuously or continuously from a relatively large area.

Claims

1. A continuous negative pressure drum skin grafting machine, comprising: Machine frame member, guide rod member, suction cup member, tool rest member; The machine frame member includes: a first cylinder, a connecting plate, an inner arc-shaped partition, and an outer arc-shaped partition; the centers of the first cylinder, the inner arc-shaped partition, and the outer arc-shaped partition coincide; a predetermined interval is formed between the inner arc-shaped partition and the outer arc-shaped partition to form a suction cup member accommodating space; both ends of the inner arc-shaped partition and the outer arc-shaped partition are integrally connected together through end plates; a plurality of through holes are formed in the outer arc-shaped partition; The guide rod member includes a second cylinder, a first guide rod, and a second guide rod; the second cylinder is rotatably installed in the first cylinder; the first guide rod is formed at the first end of the second cylinder, and the second guide rod is formed at the second end of the second cylinder; The suction cup member includes a suction cup body, a negative pressure connection port, and a leaf spring; the lower side of the suction cup body is open, and the upper side, left side, right side, front side, and rear side are closed; the negative pressure connection port is formed on the left side or the right side of the suction cup body; the leaf spring is formed in an upwardly convex arc shape and is fixed on the upper side of the suction cup body; the suction cup body is installed in the suction cup member accommodating space and can slide along the arc extension direction of the suction cup member accommodating space; the open lower side of the suction cup body faces the upper side of the outer arc-shaped partition and abuts closely against the upper side of the outer arc-shaped partition; the upper side of the suction cup body faces the lower side of the inner arc-shaped partition, and the leaf spring abuts against the inner arc-shaped partition; a pair of stoppers are respectively formed on the front side and the rear side of the suction cup body, and a predetermined interval is formed between each pair of stoppers; the first guide rod of the guide rod member is accommodated in the interval between the pair of stoppers on the front side and can slide therein, and the second guide rod of the guide rod member is accommodated in the interval between the pair of stoppers on the rear side and can slide therein; The tool rest member includes: a first cylinder, a first tool rest rod, a second tool rest rod, and a blade; the first cylinder is accommodated in the second cylinder and can slide along the axis of the second cylinder; the first end of the first tool rest rod is fixed to the first end of the first cylinder; the first end of the second tool rest rod is fixed to the second end of the first cylinder; the blade is formed in a long strip shape, its first end is fixed to the second end of the first tool rest rod, and its second end is fixed to the second end of the second tool rest rod; a first guide rod pusher is fixed on the first tool rest rod, its extending direction is perpendicular to the extending direction of the first guide rod, and it can be separably supported on the first guide rod; a second guide rod pusher is fixed on the second tool rest rod, its extending direction is perpendicular to the extending direction of the second guide rod, and it can be separably supported on the second guide rod.

2. The continuous negative pressure drum skin grafting machine according to claim 1, characterized in that: The first guide rod and the second guide rod are formed in a straight line shape.

3. The continuous negative pressure drum skin grafting machine according to claim 1, characterized in that: In the arc extension direction of the inner arc-shaped partition, a guiding groove is formed on the lower side of the inner arc-shaped partition, and the convex portion of the leaf spring is accommodated in the guiding groove.

4. The continuous negative pressure drum skin grafting machine according to claim 1, characterized in that: On the suction cup body, a sealing ring is formed along the edge of the open lower side thereof to ensure airtightness between the open lower side of the suction cup body and the outer arc-shaped partition.

5. The continuous negative pressure drum skinning machine according to claim 1, characterized in that: The first guide rod push rod and the second guide rod push rod are in a straight line.

6. The continuous negative pressure drum skinning machine according to claim 5, characterized in that: The first guide rod push rod and the second guide rod push rod extend into the space between the first cylinder and the inner arc-shaped partition.

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