WO2023056878A1

WO2023056878A1 - Skin stretcher capable of simultaneously using negative pressure suction

Info

Publication number: WO2023056878A1
Application number: PCT/CN2022/122408
Authority: WO
Inventors: 盛加根; 盛美贞; 张长青
Original assignee: 上海市第六人民医院
Priority date: 2021-10-09
Filing date: 2022-09-29
Publication date: 2023-04-13

Abstract

A skin stretcher capable of simultaneously using negative pressure suction, comprising: a perforated flexible tube (1), which is arranged along a first direction; bottom dressing (2), at least a part of which makes contact with the perforated flexible tube (1); a tension wire (3), which is arranged along a second direction intersecting the first direction, one end of the tension wire (3) being connected to a traction plate (4), and the traction plate (4) being connected to the skin; and a winding mechanism, which comprises: a winding shaft outer cylinder (51) provided above the bottom dressing (2), a winding shaft (52) the lower end of which is provided in the interior of the winding shaft outer cylinder (51), and a knob (53) that is matched with the upper end of the winding shaft (52), wherein a wire outlet hole is provided on an outer cylinder of the winding shaft (52), the other end of the tension wire (3) is connected to the winding shaft (52) by passing through the wire outlet hole, and one end of the tension wire (3) is caused to move toward the winding shaft (52) or one end of the tension wire (3) is allowed to move away from the winding shaft (52) by means of rotating the winding shaft (52). Skin traction and negative pressure suction may be simultaneously achieved, and the negative pressure suction technology may be used to avoid infection while performing skin stretching.

Description

A skin stretcher that can use negative pressure suction at the same time

technical field

The invention relates to the technical field of VSD negative pressure suction, in particular to a skin stretcher capable of simultaneously using negative pressure suction.

Background technique

VSD refers to the use of dressings with drainage tubes inside to cover or fill the wounds with skin and soft tissue defects, and then seal them with biological semipermeable membranes to make them a closed space. Finally, the drainage tubes are connected to a negative pressure source. Controlled negative pressure to promote wound healing and prevent infection.

On the other hand, skin and soft tissue defect is a common surgical problem in clinical practice. There are many reasons for it, such as tumor, scar, trauma, inflammation, operation and skin disease itself. When the tension of the skin wound margin is too high to be sutured directly, skin grafting or skin flap transfer is usually used to repair it. The skin stretching technology developed in recent years utilizes the looseness and extensibility of the skin, and uses a stretcher to pull the skin edges on both sides of the wound toward the center, so as to gradually shrink the wound and finally suture the wound to eliminate the purpose.

VSD can prevent infection very well, but during its use, the skin will be in a retracted state and adhere to the deep tissue, which hinders the direct wound closure in the later stage. On the other hand, in the prior art, the skin stretcher cannot perform VSD suction during use, because skin stretching is a slow process, and in this process, the wound surface can only be bandaged with traditional dressings, which is easy Cause wound and even deep tissue (muscle, tendon, bone, joint) infection and cause serious consequences.

Contents of the invention

In view of this, the object of the present invention is to provide a skin stretcher that can simultaneously use negative pressure suction.

The technical scheme that the present invention adopts is as follows:

A skin stretcher that can use negative pressure suction at the same time, including:

a porous hose arranged along a first direction;

an underdressing at least a portion of which is in contact with the porous hose;

A stretching line and a traction plate, the stretching line is arranged along a second direction intersecting the first direction, one end of the stretching line is connected to the traction plate, and the traction plate is connected to the skin;

A winding mechanism, the winding mechanism includes: a winding shaft outer cylinder arranged above the bottom coating, a winding shaft whose lower end is arranged inside the winding shaft outer cylinder, and an upper end matched with the winding shaft wherein, the outer cylinder of the winding shaft is provided with a wire outlet hole, and the other end of the tension wire is connected to the winding shaft through the wire outlet hole, and the wire winding shaft is rotated to make the tension wire One end moves toward the spool or one end of the tension wire is allowed to move away from the spool.

The above-mentioned skin stretcher that can use negative pressure suction at the same time further includes: a biosemipermeable membrane covering the skin and the traction plate.

The aforementioned skin stretcher that can simultaneously use negative pressure suction, wherein, the winding shaft is provided with a ratchet.

The above-mentioned skin stretcher that can use negative pressure suction at the same time, wherein, a pawl hole is opened on the outer cylinder of the winding shaft, and the ratchet wheel is located at the pawl hole;

It also includes a ratchet, the ratchet is connected to the outer cylinder of the winding shaft through an elastic member or an elastic part, or one side wall of the ratchet hole extends to the other side wall of the ratchet hole to form the ratchet claw;

The pawl is located at the pawl hole and matched with the ratchet.

In the aforementioned skin stretcher that can simultaneously use negative pressure suction, a sealing structure is provided between the winding shaft and the outer cylinder of the winding shaft, and the sealing structure is located between the ratchet and the wire outlet hole.

The aforementioned skin stretcher capable of simultaneously using negative pressure suction includes a plurality of winding mechanisms, and the plurality of winding mechanisms are all arranged along the first direction.

The above-mentioned skin stretcher that can use negative pressure suction at the same time, wherein, among the plurality of winding mechanisms, each of the winding mechanisms is provided with two stretching wires and two traction plates, and two The tension wire is arranged on both sides of the winding mechanism along the second direction.

The aforementioned skin stretcher that can simultaneously use negative pressure suction, wherein, the porous flexible tube is arranged through the bottom dressing.

The above-mentioned skin stretcher that can use negative pressure suction at the same time also includes: a porous bottom connecting plate, the porous bottom connecting plate is arranged on the bottom dressing, the lower end of the winding mechanism is connected to the porous bottom The connecting plate is detachably fixedly connected.

The above-mentioned skin stretcher that can use negative pressure suction at the same time, wherein, the stretching wire is also provided with a soft sleeve.

The present invention has adopted above-mentioned technology, makes it have positive effect compared with prior art and is:

(1) The present invention can simultaneously realize skin traction and negative pressure suction, and can avoid infection by using negative pressure suction technology while performing skin stretching.

Description of drawings

Fig. 1 is a schematic diagram of a skin stretcher that can simultaneously use negative pressure suction according to the present invention.

Fig. 2 is a schematic diagram of the skin stretcher that can simultaneously use negative pressure suction according to the present invention.

Fig. 3 is a schematic diagram of the skin stretcher that can simultaneously use negative pressure suction according to the present invention.

Fig. 4 is a schematic diagram of the winding mechanism of the skin stretcher that can simultaneously use negative pressure suction according to the present invention.

Fig. 5 is a cross-sectional view of the winding mechanism of the skin stretcher that can simultaneously use negative pressure suction according to the present invention.

In the drawings: 1. Porous hose; 2. Bottom dressing; 3. Tension wire; 4. Traction plate; 51. Outer cylinder of winding shaft; 52. Winding shaft; 53. Knob; 6. Biological semipermeable membrane; 71 , ratchet; 72, pawl; 73, pressing part; 8, porous bottom connecting plate.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Fig. 1 is the schematic diagram of the skin stretcher that can use negative pressure suction at the same time of the present invention, Fig. 2 is the schematic diagram of the skin stretcher that can use negative pressure suction simultaneously of the present invention, Fig. 3 is the skin stretcher that can use negative pressure suction simultaneously of the present invention. The schematic diagram of the skin stretcher of pressure suction, Fig. 4 is the schematic diagram of the winding mechanism of the skin stretcher of the present invention that can use negative pressure suction at the same time, Fig. 5 is the skin stretcher of the present invention that can use negative pressure suction at the same time The cross-sectional view of the winding mechanism of the device, please refer to Fig. 1 to Fig. 5, shows a preferred embodiment of a skin stretcher that can use negative pressure suction at the same time, including: a porous hose 1, a bottom dressing 2 , tension line 3 and traction plate 4, porous hose 1 is arranged along a first direction, at least a part of bottom dressing 2 is in contact with porous hose 1, tension line 3 is arranged along a second direction intersecting with the first direction, and One end of the tension wire 3 is connected with the traction plate 4, and the traction plate 4 is connected with the skin.

Further, as a preferred embodiment, the skin stretcher that can use negative pressure suction at the same time also includes: a winding mechanism, the winding mechanism includes: a winding shaft outer cylinder 51 arranged on the top of the bottom dressing 2, a lower end The bobbin 52 inside the bobbin outer cylinder 51 and the knob 53 matched with the upper end of the bobbin 52, wherein the bobbin outer cylinder 51 is provided with an outlet hole, and the other end of the tension line 3 is connected to the wire through the outlet hole. The winding shaft 52 is connected, and by rotating the winding shaft 52, one end of the tension wire 3 is moved toward the winding shaft 52 or one end of the tension wire 3 is allowed to move away from the winding shaft 52 . In other words, the tension wire 3 is tightened by rotating the winding shaft 52 , and the tension wire 3 is loosened by reversely rotating the winding shaft 52 . This results in stretching and adjustment of the skin.

Preferably, the bottom dressing 2 is arranged in a trapezoidal shape. Preferably, both sides of the bottom dressing 2 have slopes, and the skin is pulled along the slopes of the bottom dressing 2 to prevent the skin from rolling inwards to the wound.

Further, as a preferred embodiment, the skin stretcher that can simultaneously use negative pressure suction also includes: a biosemipermeable membrane 6 covering the skin, and a traction plate 4 .

Further, as a preferred embodiment, the winding shaft 52 is provided with a ratchet 71 .

Further, as a preferred embodiment, a ratchet hole is opened on the bobbin outer cylinder 51, and the ratchet wheel 71 is located at the ratchet hole.

Further, as a preferred embodiment, a ratchet 72 is also included, and the ratchet 72 is connected to the outer cylinder 61 of the winding shaft through an elastic member or an elastic portion.

Further, in this embodiment, please refer to FIG. 4 , one side wall (right side wall) of the pawl hole extends to the other side wall (left side wall) of the pawl hole to form a pawl 72 .

Further, in this embodiment, the outer surface of the pawl 72 near the side wall (right side wall) extends in the direction of the side wall (right side wall) to form a pressing portion 73, that is, the pawl 72 and the pressing portion 73 have In the opposite direction of extension, the pawl 72 can be disengaged from the ratchet wheel 71 when the user presses the pressing portion 73 .

Further, as a preferred embodiment, the pawl 72 is located at the pawl hole and matched with the ratchet 71 . Specifically, the ratchet 72 is engaged with the ratchet 71 under normal conditions. After the user presses the pressing part 73, the ratchet 72 and the ratchet 71 cancel the engagement. After the user releases the pressing part 73 again, the ratchet 72 automatically engages with the ratchet 71 The ratchet 71 engages again.

The unidirectional rotation and fixation of the bobbin shaft 52 are realized through the cooperation of the ratchet 71 and the pawl 72 .

Further, as a preferred embodiment, a sealing structure is provided between the winding shaft 52 and the winding shaft outer cylinder 51, and the sealing structure is located between the ratchet wheel 71 and the wire outlet hole.

Preferably, the sealing structure is a plurality of sealing rings arranged between the winding shaft 52 and the winding shaft outer cylinder 51 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention.

The present invention also has following embodiment on above-mentioned basis:

In a further embodiment of the present invention, a plurality of winding mechanisms are included, and the plurality of winding mechanisms are arranged along the first direction.

In a further embodiment of the present invention, in a plurality of winding mechanisms, each winding mechanism is provided with two tension wires 3 and two traction plates 4, and the two tension wires 3 are arranged on both sides of the winding mechanism along the second direction. side.

In this embodiment, please refer to Fig. 5, the two tension wires 3 are actually the same tension wire, the middle part of the same tension wire is wound on the bobbin 52, and the rotation of the bobbin 52 can make the same tension The two ends of the wire are equidistantly shrunk toward the direction of the winding shaft 52, so as to realize the traction of the skin on both sides.

In a further embodiment of the present invention, the porous hose 1 is arranged through the bottom dressing.

In a further embodiment of the present invention, it also includes: a porous bottom connecting plate 8 , the porous bottom connecting plate 8 is arranged on the bottom coating 2 , and the lower end of the winding mechanism is detachably fixedly connected to the porous bottom connecting plate 8 .

In a further embodiment of the present invention, a soft sleeve (not shown in the figure) is also provided on the tension wire 3 .

According to the present invention, when the skin stretcher is used simultaneously with negative pressure suction (i.e. negative pressure drainage), for example, the traction plate 4 can be first fixed on the skin on both sides of the wound/incision/soft tissue defect to be stretched , form the first direction; then the porous hose 1 and the bottom dressing 2 are placed on the wound/incision/soft tissue defect that cannot be closed along the second direction intersecting with the first direction (preferably, the wound/incision/soft tissue center of the defect, such as shown in Figures 1-3) or over the closed wound/incision/soft tissue defect, and place a winding mechanism that does not cover the knob 53 on the bottom dressing 2 (preferably Place the winding mechanism and the porous bottom connecting plate 8) that do not cover the knob 53); then, fix the stretching wire 3 on the corresponding traction plate 4; then, cover the biological semipermeable membrane 6 to seal, so that the traction The stretched skin, wound/incision/soft tissue defect and the skin stretcher are in the same closed space (such as shown in Figure 1); finally, stretch the wound/incision/soft tissue defect by sheathing the knob 53 and rotating the winding mechanism skin on both sides. Among them, the methods of fixing the traction plate 4 on the skin, fixing the stretch wire 3 on the traction plate 4, and covering the biological semipermeable membrane 6 in a hermetic manner are all prior art, and those skilled in the art can select and adjust according to needs. operate. So I won't go into details here.

When negative pressure drainage is required, the porous hose 1 can be connected with a negative pressure suction device.

When adjusting the tightness of skin stretching, the tension wire 3 can be tightened by rotating the winding shaft 52 with the knob 53, so that the skin on both sides of the wound/incision/soft tissue defect moves toward each other; or, the ratchet 71 can be released by pressing the pressing part 73 Engage with the ratchet 72 to release the tightened stretch wire 3, so that the skin on both sides of the wound/incision/soft tissue defect moves back. Wherein, the frequency of use and the rotation angle of the knob 53 may vary according to actual conditions.

In addition, according to the present invention, those skilled in the art can also know that the skin stretcher is also suitable for preoperative skin pre-stretch without negative pressure suction (ie, negative pressure drainage). In this application scenario, for example, the traction plate 4 can be fixed on the skin on both sides of the expected surgical incision to form the first direction; then the winding mechanism (preferably, the winding mechanism and the porous bottom connecting plate 8) Place it at the expected surgical incision (preferably, at the center of the expected surgical incision); then, fix the stretch wire 3 on the corresponding traction plate 4; adjust the tightness of the skin stretch as needed; complete the preoperative skin pre-stretch After opening, remove all devices. Wherein, the method for adjusting the tightness of the stretched skin is the same as described above.

In addition, according to the present invention, those skilled in the art can also understand that the skin stretcher is also suitable for closing wounds/incisions without tension. In this application scenario, for example, the traction plate 4 can be fixed on the skin on both sides of the wound/incision to form the first direction; Place the winding mechanism (preferably, place the winding mechanism and the porous bottom connecting plate 8); then, fix the tension wire 3 on the corresponding traction plate 4; finally, further pull the winding mechanism by sheathing the knob 53 and rotating the winding mechanism Open the wound/incision to make the latter in a state of reduced tension or no tension, so as to reduce the formation of scars or reduce the size of scars, so as to achieve the purpose of promoting wound healing and beauty. Wherein, the method for adjusting the tightness of the stretched skin is the same as described above.

The above are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention. For those skilled in the art, they should be able to realize the equivalent replacement and The solutions obtained by obvious changes shall all be included in the protection scope of the present invention.

Claims

A skin stretcher that can use negative pressure suction at the same time is characterized in that it includes:

a porous hose arranged along a first direction;

an underdressing at least a portion of which is in contact with the porous hose;

a stretch line and a traction plate, the stretch line is arranged along a second direction intersecting the first direction, one end of the stretch line is connected to the traction plate, and the traction plate is connected to the skin;

A winding mechanism, the winding mechanism includes: a winding shaft outer cylinder arranged above the bottom coating, a winding shaft whose lower end is arranged inside the winding shaft outer cylinder, and an upper end matched with the winding shaft wherein, the outer cylinder of the winding shaft is provided with a wire outlet hole, and the other end of the tension wire is connected to the winding shaft through the wire outlet hole, and the wire winding shaft is rotated to make the tension wire One end moves toward the spool or one end of the tension wire is allowed to move away from the spool.
The skin stretcher capable of simultaneously using negative pressure suction according to claim 1, further comprising: a biosemipermeable membrane covering the skin and the traction plate.
The skin stretcher capable of simultaneously using negative pressure suction according to claim 1 is characterized in that a ratchet is provided on the winding shaft.
The skin stretcher capable of using negative pressure suction at the same time according to claim 3, wherein a ratchet hole is opened on the outer cylinder of the winding shaft, and the ratchet wheel is located at the ratchet hole;

It also includes a ratchet, the ratchet is connected to the outer cylinder of the winding shaft through an elastic member or an elastic part, or one side wall of the ratchet hole extends to the other side wall of the ratchet hole to form the ratchet claw;

The pawl is located at the pawl hole and matched with the ratchet.
The skin stretcher capable of simultaneously using negative pressure suction according to claim 4, wherein a sealing structure is provided between the winding shaft and the outer cylinder of the winding shaft, and the sealing structure is located between the ratchet and the between the outlet holes.
The skin stretcher capable of simultaneously using negative pressure suction according to claim 1, characterized in that it comprises a plurality of winding mechanisms, and the plurality of winding mechanisms are arranged along the first direction.
The skin stretcher capable of simultaneously using negative pressure suction according to claim 6 is characterized in that, among the plurality of winding mechanisms, each of the winding mechanisms is provided with two stretching wires and two The pulling plate and the two pulling wires are arranged on both sides of the winding mechanism along the second direction.
The skin stretcher capable of simultaneously using negative pressure suction according to claim 1, wherein the porous flexible tube is arranged through the bottom dressing.
The skin stretcher capable of using negative pressure suction at the same time according to claim 1, further comprising: a porous bottom connecting plate, the porous bottom connecting plate is arranged on the bottom dressing, and the winding mechanism The lower end is detachably fixedly connected with the porous bottom connecting plate.
The skin stretcher capable of simultaneously using negative pressure suction according to claim 1 is characterized in that a soft sleeve is also provided on the stretching wire.