CN213525315U

CN213525315U - Electric control worm gear wire feeding skin stretching device

Info

Publication number: CN213525315U
Application number: CN202022286314.6U
Authority: CN
Inventors: 刘学晖; 梁海东; 孙舸
Original assignee: Second Hospital of Dalian Medical University
Current assignee: Second Hospital of Dalian Medical University
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-06-25
Anticipated expiration: 2030-10-14

Abstract

The utility model discloses an automatically controlled worm wheel wire feeding skin tractive ware and application method thereof belongs to the medical instrument field. Automatically controlled worm wheel wire feeding skin tractive ware includes the shell, perpendicular shell bottom is equipped with one row of motor shaft in the middle of the shell is inside, the one end of every motor shaft all is connected with the motor, the worm is connected respectively to the other end of motor shaft, every worm all with be equipped with the supporting part between the shell bottom, the inside worm wheel that uses with the worm cooperation that is equipped with of shell, worm wheel cross distribution is in the inside both sides of the shell equally divided by motor shaft, worm wheel axis position is equipped with the connecting axle, the connecting axle is fixed and connect adjacent worm wheel, the direction of connecting axle is perpendicular with motor shaft, the shell bottom and the side that every worm wheel located the position all are equipped with a set of barbed line access & exit, make the barbed line forward or. The device is small and exquisite, can show the tension in real time, and doctor or patient can freely control, adopts the cyclic load method to stretch the skin, reaches the effect of stretching the skin.

Description

Electric control worm gear wire feeding skin stretching device

Technical Field

The utility model relates to an automatically controlled worm wheel wire feeding skin stretching device belongs to the medical instrument field.

Background

In clinical work, skin soft tissue defects or incision suturing difficulty due to over tension and the like caused by trauma, diabetic foot, tumor excision, pigmented nevus excision and the like are often encountered, and generally, a conservative dressing change method, flap metastasis repair, skin grafting, dilator implantation, immediate skin stretching in operation or a continuous skin stretching method after operation is selected as a clinical treatment mode. However, the above methods often form large scars, cause secondary trauma to patients, require multiple operations, have long operation time, and prolong healing after the operations, and are a huge burden and challenge for both patients and medical staff.

The wound surface is repaired by skin flap or skin grafting, secondary wound is caused to a supply area of a patient, and the supply area is possibly repaired by a second supply area due to the direct suturing difficulty caused by overlarge cut tissue. Meanwhile, scars in the repair area are obvious, the skin flap and the skin graft have the risks of non-survival and necrosis, and the success rate of the operation cannot reach one hundred percent.

The expander is used for expansion treatment, and the patient needs to be injected with water in the expansion area for 3-7 days and needs to be subjected to relay expansion or repair by two or more operations.

Therefore, skin stretching techniques have been developed. However, most of the existing skin stretching devices are in an external frame form, and are operated through the skin surface, scars or deformities on the skin surface are left after operation, the appearance is influenced, the possibility of damaging the blood circulation of the skin during operation is caused, and the skin is subjected to ischemic necrosis, even secondary wound infection and the like. Most skin stretching needs secondary operation to close the wound surface, so that the anesthesia times and the pain of a patient are increased, and the economic burden of the patient is increased. Some skin stretching devices adhered through skin use silica gel to adhere to the epidermis, but the long-term tension effect can form blisters in the adhering area, so that the effect of stretching the skin cannot be achieved, but blister skin in the blister area is broken, and the risk of wound infection is increased. The adhesive plaster stuck on the surface of the skin can not be continuously in place for a long time, the edge curling or the sticking displacement can occur on part of the adhesive plaster, the re-sticking operation is troublesome, and the patient can feel uncomfortable or painful and the stretching effect is influenced. The scholars use the kirschner wire or the alloy instrument to draw the wound margin, but the tension can not be set individually, so that part of patients can suffer from skin ischemia due to overhigh tension or ischemia caused by edema of wound due to instrument compression, the treatment time is prolonged, the wound surface is further enlarged, and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an automatically controlled worm wheel wire feeding skin tractive ware and application method thereof. The utility model discloses use the mode of hanging in midair of sunkening cord, through the sawtooth line to the tissue tractive, reach the purpose that wicresoft's skin stretch, reduce the damage on skin surface, the closure that can first stage closed tension nature or great surface of a wound. The utility model discloses use face line carving jagged line (for example: poly-p-dioxanone, PPDO) to bury the line and put the line in skin layer, shallow rete and dark rete of fascia, adopt 3D to print integrated line combiner, carry out the cross bonding with the line of the opposite side of the surface of a wound, draw closed wound gradually together, can combine PRP technique to carry out skin edge injection and surface of a wound gel external application in the initial stage of using or the closed later stage of the surface of a wound to do not have cicatrization healing in the hope, and then reach the closed purpose in the first time.

The utility model provides a following technical scheme: the utility model provides an automatically controlled worm wheel wire feeding skin tractive ware, automatically controlled worm wheel wire feeding skin tractive ware includes the shell, perpendicular shell bottom is equipped with one row of motor shaft in the middle of the shell is inside, the one end of every motor shaft all is connected with the motor, the worm is connected respectively to the other end of motor shaft, every worm all with the shell bottom between be equipped with the supporting part, the inside worm wheel that uses with the worm cooperation of shell, worm wheel cross distribution is in the inside both sides of shell equally divided by motor shaft, worm wheel axis position is equipped with the connecting axle, the connecting axle is fixed and is connected adjacent worm wheel, the direction of connecting axle is perpendicular with motor shaft, the shell bottom and the side of every worm wheel position all are equipped with a set of barb line access & exit, make the barb line forward or reverse shuttle.

Further, in the above technical solution, the barbed wire includes a face line engraved serrated wire, such as poly-p-dioxanone, PPDO.

Furthermore, in the above technical scheme, the bottom surface of the outer shell is a surface in contact with skin, a protective sleeve is sleeved outside the bottom surface of the outer shell, the protective sleeve is made of elastic material, and corners of the outer bottom surface of the protective sleeve are of arc-shaped structures.

Further, in the above technical scheme, the material of the protective cover includes silica gel.

Furthermore, in the above technical scheme, the number of the motor rotating shaft, the number of the worm and the number of the worm wheel are the same, and the number of the motor rotating shaft, the number of the worm and the number of the worm wheel are all 2-4.

Furthermore, in the technical scheme, the barb line inlet and outlet arranged on the side surface of the shell are parallel to the horizontal plane of the bottom end of the worm wheel, and the through hole is a straight hole; the barb line access & exit of locating the shell bottom is located worm wheel and is tangent the department and be located directly under perpendicularly, and the through-hole is for 30 ~ 60 degrees inclined holes with the horizontal plane. The aperture of the barb line inlet and outlet is slightly larger than the diameter of the barb line

Furthermore, in the above technical scheme, a support rod is arranged between the connecting shaft and the bottom of the shell.

Further, in the above technical solution, the shape of the housing includes a cubic shape; the outer part of the shell is also provided with a display screen and an electric control switch, the electric control switch is electrically connected with the motor, and the electric control switch can control the motor to rotate in the forward direction, rotate in the reverse direction and stop; a mechanical sensor is arranged in the skin stretching device, the mechanical sensor is electrically connected with the motor, and the instantaneous stretching force of the skin stretching device is displayed through a display screen; the electric control worm gear wire feeding skin stretching device is internally provided with a Bluetooth device and can be connected with a mobile phone through the Bluetooth device; the tension of the electric control worm gear wire feeding skin stretching device is 1-3 kg.

The utility model also provides a use method of automatically controlled worm wheel wire feeding skin stretching device, including following step:

(1) wire arrangement: cleaning the wound surface, and confirming the position of the position line according to the size of the wound surface and the thickness of the skin; 1 barb thread is placed every 2-3cm, and after the thread placement is finished, the embedding needle is pushed out;

(2) skin stretching: the part of the thread end far away from the wound edge end is left on the surface of the skin, the thread end close to the wound edge end is placed into a barbed thread inlet and outlet positioned at the bottom of the shell of the electric control worm wheel thread feeding skin stretching device, a switch is opened, a motor is started, the barbed thread automatically enters the skin stretching device and is led out from the barbed thread inlet and outlet on the side surface of the shell, and the wound edge is furled and tensioned to form skin stretching tension;

(3) the mobile phone Bluetooth is connected with the skin stretching device, and the worm wheel is controlled to rotate forwards or backwards according to the skin condition so as to adjust the tightness of the barbed wire; the dressing change is carried out every 2 to 3 days in the traction and extension process, so that local infection is avoided;

(4) when the wound surface is less than or equal to 0.5cm, injecting platelet-rich plasma prp to the wound surface and applying prp gel externally, taking off the skin stretching device after the skin is well healed, cutting off the barb line at the wound to make the barb line remain subcutaneously, making the barb line remain in the body to be absorbed by itself or be pulled outwards by the end of the line far away from the wound edge, making the wound surface heal without scar

The skin condition can be observed according to mobile phone app or network end incoming line tension degree monitoring, and the tightness of the tension line can be adjusted in time.

The number of times and distance of stretch each day can be set through the mobile phone app, a stretch plan is set, and medical staff can be remotely connected to help adjust the plan.

Further, in the above technical scheme, the position line includes a skin layer, a superficial fascia layer and a deep fascia layer.

Further, in the above technical solution, the line placing method includes placing lines in parallel, placing lines in a fan shape, or placing lines in a net shape in a crossing manner.

Beneficial effects of the utility model

The utility model discloses bury different model material barb/fishbone wire rod according to the characteristics of organizing different levels, combine to bury the wire rod through skin distractor and draw together and tighten up skin soft tissue around the wound margin, through the composition of line and the effect of stretching, can promote skin extension and regeneration when reaching improvement skin matter, antibiotic antibacterial, and then closed surface of a wound. In the process of considering the combination of the opposite side wound edge stretching lines, the scheme of continuously researching and turning over immaturity is preliminarily formed, namely an Electric control worm gear Wire feeding skin stretching device (EWSD), the device is small and exquisite and convenient to operate, mainly comprises a Wire feeding mechanism using a worm gear and an Electric driving mechanism with a mechanical sensor, the worm gear can compress the embedded barb/fishbone line when the device is operated, the driving mechanism reduces the rotating speed through the worm gear and then retracts the barb/fishbone line at a proper speed, meanwhile, the device is provided with mechanical parameters which can display the stretching tension degree in real time, a clinician or a patient can freely control, a cyclic load method is adopted to stretch skin and fascia tissues, and the device is safe, effective, simple and easy to implement, thereby achieving the effect of stretching the skin.

Drawings

Fig. 1 is a schematic view of the internal structure of an electrically controlled worm-wheel wire feeding skin stretching device.

Fig. 2 is a schematic cross-sectional structure diagram of an electrically controlled worm wheel wire feeding skin distractor.

Fig. 3 is a schematic view of the usage of the electrically controlled worm wheel wire feeding skin stretching device.

In the figure, 1, an electric control worm gear wire feeding skin stretching device; 2. a motor shaft; 3. a worm; 4. a worm gear; 5. a connecting shaft; 6. an outlet and an inlet of the barb line; 7. a housing; 8. a barbed line; 9. a protective sleeve; 10. a motor; 11. a skin layer; 12. a superficial fascia layer; 13. deep fascia layer.

Detailed Description

The following non-limiting examples will allow one of ordinary skill in the art to more fully understand the present invention, but are not intended to limit the invention in any way.

Example 1

As shown in fig. 1-3, an automatically controlled worm wheel wire feeding skin stretching device, automatically controlled worm wheel wire feeding skin stretching device includes shell 7, perpendicular shell bottom is equipped with one row of motor shaft 2 in the middle of shell 7 is inside, the one end of every motor shaft 2 all is connected with motor 10, worm 3 is connected respectively to the other end of motor shaft 2, every worm 3 all with be equipped with the supporting part between the shell 7 bottom, the inside worm wheel 4 that uses with worm 3 that is equipped with of shell 7, worm wheel 4 cross distribution is in the inside both sides of shell 7 equally divided by motor shaft 2, worm wheel 4 axis position is equipped with connecting axle 5, connecting axle 5 is fixed and is connected adjacent worm wheel, the direction of connecting axle 5 is perpendicular with motor shaft 2, the shell bottom and the side of every worm wheel 4 position all are equipped with a set of barbed line access & exit 6, make barbed line 8 under the drive of worm wheel 4 forward or reverse shuttle.

7 bottom surfaces of shell are the contact surface with skin, and 7 bottom overcoat of shell have lag 9, and lag 9 is the elasticity material, and lag 9 outside bottom surface corner is the arc structure. The material of lag 9 includes silica gel.

The number of the motor rotating shaft 2, the worm 3 and the worm wheel 4 is the same, and the number of the motor rotating shaft, the number of the worm 3 and the number of the worm wheel 4 are 3.

The barb line inlet and outlet arranged on the side surface of the shell are parallel to the horizontal plane of the bottom end of the worm wheel 4, and the through hole is a straight hole; the barb line access & exit of locating the shell bottom is located

worm wheel

4 and 3 tangent department under perpendicular, and the through-hole is for 30 ~ 60 degrees inclined holes with the horizontal plane. The aperture of the barb line inlet and outlet 6 is slightly larger than the diameter of the barb line

And a support rod is arranged between the connecting shaft 5 and the bottom of the shell 7.

The shape of the housing 7 comprises a cubic shape; a display screen and an electric control switch are further arranged outside the shell 7, the electric control switch is electrically connected with the motor 10, and the electric control switch can control the motor to rotate in the forward direction, rotate in the reverse direction and stop; a mechanical sensor is arranged in the skin stretching device, the mechanical sensor is electrically connected with the motor, and the instantaneous stretching force of the skin stretching device is displayed through a display screen; the electric control worm gear wire feeding skin stretching device is internally provided with a Bluetooth device and can be connected with a mobile phone through the Bluetooth device; the tension of the electric control worm gear wire feeding skin stretching device is 1-3 kg.

The utility model discloses when dragging the skin action, the mechanical sensor will collect moment of torsion information in real time, deduct and can reachd skin instantaneous tension after the mechanical resistance to medical personnel are according to parameter adjustment treatment scheme.

Example 2

The use method of the electric control worm gear wire feeding skin stretching device comprises the following steps:

(1) wire arrangement: cleaning the wound surface, and confirming the position of the position line (comprising a skin layer, a superficial fascia layer and a deep fascia layer) according to the size of the wound surface and the thickness of the skin; 1 barbed line is placed at intervals of 2-3cm, the line placing method comprises the steps of placing lines in parallel, placing lines in a fan shape or placing lines in a net shape in a crossed manner, and after the line placing is finished, the embedding needle is pushed out;

(2) skin stretching: the thread end part far away from the wound edge end is left on the surface of the skin, the thread end close to the wound edge end is placed into a barbed thread inlet and outlet positioned at the bottom of the shell of the electric control worm wheel thread feeding skin stretching device, a switch is opened, a motor is started, a barbed thread automatically enters the skin stretching device, the barbed thread is led out from the barbed thread inlet and outlet on the side surface of the shell, the wound edge is furled and tensioned, and skin stretching tension is formed (for example, stretching in the direction of an arrow S2 in the picture 3);

(3) the mobile phone Bluetooth is connected with the skin stretching device, and the worm wheel is controlled to rotate forwards or backwards according to the skin condition so as to adjust the elasticity of the barbed wire (the barbed wire has a direction, and when a patient feels that the stretching force is too large and feels uncomfortable, the worm wheel can be rotated in a reverse direction properly, so that the stretching force of the stretching device is reduced); the dressing change is carried out every 2 to 3 days in the traction and extension process, so that local infection is avoided;

(4) when the wound surface is less than or equal to 0.5cm, platelet-rich plasma prp is injected to the part of the wound surface and prp gel is applied externally, after skin heals well (about 4 weeks), the skin stretcher is taken off, the barb line at the wound is cut off, the barb line is left under the skin (namely, after the wound heals well, the stretching line is pulled out towards the wound direction, the barb line is horizontally cut off shorter than the wound edge of soft tissue, after the barb line is cut off, the wound edge surface can be used for assisting or pulling adhesive tape for assisting to consolidate the healed wound), the barb line is left in the body to be absorbed by self or pulled out from the line head far away from the wound edge end (because part of suture reaction or allergy possibly existing in a patient, the line head can be left on the skin surface when the line is placed, the internal line is taken out when symptoms appear or after the wound heals, in addition, if the line head is needed to be left on the skin surface, the sterile dressing change operation on the line head is needed, the infection of the wound.

Considering the state of illness and possible allergy of a patient, a doctor can decide whether to leave the end of the stretching line far away from the wound edge on the skin surface according to the situation (because the wire rod has a barb structure, the direction along the barb is defined as the direction of stretching the skin, and the direction indicated by an arrow S4 in fig. 3 can hook the skin soft tissue without displacement, so the skin surface can be fixed without knotting), when abnormality such as rejection reaction or infection occurs, the stretching line can be cut at the wound, the stretching line kept on the skin surface far away from the wound edge end is pulled, and the line is pulled out in the direction of reverse pricking.

The utility model provides a portable skin stretching device, after the barbed wire is implanted, the barbed wire is driven by a motor and is accurately retracted and released; the stretching speed is effectively controlled by means of the reduction of the worm gear and the worm, so that doctors can conveniently master the reaction of patients; the barbed wire can be switched to tighten or loosen at any time by virtue of the self-locking characteristic of the worm wheel; the three barb lines can be operated at the same time and can be retracted at a constant speed, so that the wound can be efficiently furled; the driving mechanism and the wire feeding mechanism are designed separately, so that the volume and the weight of equipment left at the affected part of a patient are greatly reduced, and the cost of consumable materials is reduced; the driving part is provided with a mechanical sensor which can display the stress of skin tissues at the wound in real time; through the specially designed wire retracting port, the barb wire is ensured to only have acting force along the stretching direction on the skin, and the acting force vertical to the skin is not generated, so that the secondary damage to skin tissues is prevented, and meanwhile, the skin on two sides can be effectively and closely attached together after being tightened, so that the wound is convenient to heal; does not need to clamp the skin, and is not easy to cause complications.

Claims

1. An electric control worm gear wire feeding skin distractor is characterized by comprising an outer shell (7), a row of motor rotating shafts (2) are arranged in the middle of the inside of the outer shell (7) and perpendicular to the bottom of the outer shell, one end of each motor rotating shaft (2) is connected with a motor (10), the other end of each motor rotating shaft (2) is connected with a worm (3) respectively, a supporting part is arranged between each worm (3) and the bottom of the outer shell (7), a worm gear (4) matched with the worm (3) for use is arranged in the outer shell (7), the worm gears (4) are distributed on two sides of the inside of the outer shell (7) equally divided by the motor rotating shafts (2) in a crossed manner, a connecting shaft (5) is arranged in the middle shaft position of each worm gear (4), the connecting shaft (5) is fixed and connected with adjacent worm gears, the direction of the connecting shaft (5) is perpendicular to the motor rotating shafts (2), a group of barbed wire inlet and outlet (6, the barbed wire (8) is driven by the worm wheel (4) to shuttle forwards or backwards.

2. The electric control worm gear wire feeding skin stretching device as claimed in claim 1, wherein the bottom surface of the shell (7) is a surface contacting with skin, a protecting sleeve (9) is sleeved outside the bottom of the shell (7), the protecting sleeve (9) is made of elastic material, and corners of the outer bottom surface of the protecting sleeve (9) are of arc-shaped structures.

3. The electric control worm gear wire feeding skin stretching device as claimed in claim 2, wherein the material of the protecting sleeve (9) comprises silica gel.

4. The electric control worm gear wire feeding skin stretching device as claimed in claim 1, wherein the number of the motor rotating shaft (2), the worm (3) and the worm gear (4) is the same, and is 2-4.

5. The electric control worm gear wire feeding skin stretching device as claimed in claim 1, wherein the barb line inlet and outlet arranged on the side surface of the shell is parallel to the horizontal plane of the bottom end of the worm gear (4), and the through hole is a straight hole; the barb line inlet and outlet arranged at the bottom of the shell are positioned right below the tangent position of the worm wheel (4) and the worm (3), and the through hole is an inclined hole with 30-60 degrees to the horizontal plane; the aperture of the barb line inlet and outlet (6) is slightly larger than the diameter of the barb line.

6. The electric control worm gear wire feeding skin stretching device as claimed in claim 1, wherein a support rod is arranged between the connecting shaft (5) and the bottom of the shell (7).

7. The electrically controlled worm gear feed skin retractor according to claim 1, wherein the shape of the housing (7) comprises a cube; a display screen and an electric control switch are further arranged outside the shell (7), the electric control switch is electrically connected with the motor (10), and the electric control switch can control the motor to rotate in the forward direction, rotate in the reverse direction and stop; a mechanical sensor is arranged in the skin stretching device, the mechanical sensor is electrically connected with the motor, and the instantaneous stretching force of the skin stretching device is displayed through a display screen; the electric control worm gear wire feeding skin stretching device is internally provided with a Bluetooth device and can be connected with a mobile phone through the Bluetooth device; the tension of the electric control worm gear wire feeding skin stretching device is 1-3 kg.