Skin expander

Abstract

The utility model relates to the technical field of medical instruments, and discloses a skin dilator which comprises a U-shaped frame, one wing plate of the U-shaped frame can slide in the length direction of a web plate to change the size of an opening of the U-shaped frame, the U-shaped frame comprises a fixing rod, a first connecting rod and a second connecting rod, the fixing rod corresponds to the web plate of the U-shaped frame, and the first connecting rod is connected with the web plate of the U-shaped frame. The two connecting rods correspond to two wing plates of the U-shaped frame, the first connecting rod is fixedly connected with the fixing rod, a through hole for the fixing rod to pass through is formed in the end, close to the fixing rod, of the second connecting rod, and a locking piece used for locking the relative position of the fixing rod and the second connecting rod is arranged between the fixing rod and the second connecting rod. The utility model solves the problems in the prior art that the operation is troublesome, the efficiency is low and the workload of doctors is increased because the iron wire frame is prefabricated by the doctors for each patient.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially relates to a skin expander. BACKGROUND

[0002] Skin burn and scald are problems that trauma surgeons often encounter in clinic, and the purpose of operation is usually to remove necrotic tissue, repair damaged tissue, promote wound healing and restore function. The operation can achieve these purposes through skin transplantation, suture and other ways.

[0003] The skin of the wound after operation will contract, and the reason is that the newly generated skin tissue will contract during the healing process, causing the skin around the wound to become hard, thick, and even deformed, such as concave or protruding. Wound contracture can bring many adverse effects to patients, such as affecting the appearance, causing psychological burden to patients; wound involving joints can cause limb movement disorders; cause discomfort symptoms such as pain and itching, affecting the quality of life of patients; increase the risk of infection and re-injury, etc. Therefore, for burn, scald and other trauma patients, it is very important to prevent and treat wound skin contracture.

[0004] In the prior art, doctors usually precast a wire frame according to the wound position and size, the wire frame is wrapped around the outer periphery of the patient's wound, and then the wound skin is stretched to the outer periphery of the wound through multiple medical tapes. Specifically, one end of the medical tape is connected to the human skin, and the other end is connected to the skin around the wound by winding around the wire frame, which also fixes the wire frame on the human body. However, each patient is precasted by the doctor, which not only is troublesome and inefficient, but also increases the workload of the doctor. SUMMARY

[0005] Therefore, the utility model aims at providing a skin expander to solve the problem that each patient is precasted by the doctor in the prior art, which is not only troublesome and inefficient, but also increases the workload of the doctor.

[0006] The utility model solves the above technical problem through the following technical scheme: a skin expander, including U-shaped frame, one wing board of U-shaped frame can slide along the length direction of web to change the opening size of U-shaped frame, U-shaped frame includes fixed rod, first connecting rod and second connecting rod, fixed rod corresponds to the web of U-shaped frame, two connecting rods correspond to two wing boards of U-shaped frame, first connecting rod is fixedly connected with fixed rod, the one end of second connecting rod close to fixed rod is provided with the through hole for the fixed rod, and the fixed rod and second connecting rod are provided with locking piece for locking the relative position of fixed rod and second connecting rod.

[0007] Further, the second connecting rod is internally provided with a threaded hole, the threaded hole is communicated with the through hole, and a screw rod is threadedly connected in the threaded hole, one end of the screw rod extends out of the second connecting rod and is fixed with a knob.

[0008] Further, the skin expander further comprises a tether, and the two ends of the fixed rod, the free ends of the two adjustable rods and the two ends of the mounting rod are all provided with threading holes for the tether to pass through.

[0009] Further, the adjustable rod is provided with a mounting rod, the axis of the mounting rod is parallel to the axis of the fixed rod, one end of the mounting rod is provided with a through hole for one of the adjustable rods to pass through, and the other end of the mounting rod is provided with an elongated slot along the axis of the mounting rod for the other adjustable rod to pass through and the fixed position of the other adjustable rod is adjustable, and the second fixing member is arranged between the mounting rod and the adjustable rod passing through the through hole of the mounting rod.

[0010] Further, the skin expander further comprises a tether, and the two ends of the fixed rod, the free ends of the two adjustable rods and the two ends of the mounting rod are all provided with threading holes for the tether to pass through.

[0011] The skin expander has the advantages that: when in use, the U-shaped frame is fixed on the patient's body through the wing plates and / or the web plates of the U-shaped frame wrapped by the medical adhesive tapes, and the wound skin is pulled and expanded to avoid contraction, the relative position of the second connecting rod and the fixed rod is locked and fixed through the locking member, the size of the opening of the U-shaped frame is changed, the skin expander can be applied to wounds of different sizes, the application range is wide, the structure is simple, the operation is convenient, and the workload of doctors is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] The skin expander can be further illustrated through the non-limiting embodiments shown in the drawings.

[0013] Figure 1 is a structural schematic view of the skin expander.

[0014] In the above drawings: 1, fixed rod; 2, first connecting rod; 3, second connecting rod; 4, locking member; 5, adjusting rod; 6, first fixing member; 7, second fixing member; 8, mounting rod; 9, elongated slot; 10, threading hole. DETAILED DESCRIPTION

[0015] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures. They should not be construed as limiting the utility model. To better illustrate the embodiments of this utility model, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable for those skilled in the art that some well-known mechanisms and their descriptions may be omitted in the figures.

[0016] In the figures of this utility model embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the figures are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. In the description of this application, terms such as "first", "second", etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0017] like Figure 1 As shown in the figure, this utility model embodiment proposes a skin expander, including a U-shaped frame. One of the wing plates of the U-shaped frame can slide along the length direction of the web to change the size of the opening of the U-shaped frame. The U-shaped frame includes a fixed rod 1, a first connecting rod 2, and a second connecting rod 3. The fixed rod 1 corresponds to the web of the U-shaped frame, and the two connecting rods correspond to the two wing plates of the U-shaped frame. The fixed rod 1 is fixedly connected to the first connecting rod 2, and one end of the fixed rod 1 protrudes outside the first connecting rod 2. The second connecting rod 3 has a through hole near the fixed rod 1 for the fixed rod 1 to pass through. The other end of the fixed rod 1 passes through the through hole and protrudes outside the second connecting rod 3. A locking member is provided between the fixed rod 1 and the second connecting rod 3 to lock the relative position of the fixed rod 1 and the second connecting rod 3.

[0018] In fact, the locking member can be a bolt, a plurality of bolt holes are arranged on the fixed rod 1 axially spaced apart, a through hole is arranged on the surface of the second connecting rod 3 near the end of the fixed rod 1 for communication with the bolt hole, when the second connecting rod 3 is slid to the appropriate position, the bolt is sequentially inserted into the through hole and the bolt hole, and the second connecting rod 3 and the fixed rod 1 are locked and fixed. In this embodiment, a threaded hole is arranged on the surface of the second connecting rod 3 and recessed inwardly, the threaded hole is in communication with the through hole, a screw is threadedly connected in the threaded hole, one end of the screw extends out of the second connecting rod 3 and is fixed with a knob, by rotating the knob, the screw is abutted with the fixed rod 1, and the second connecting rod 3 and the fixed rod 1 are locked and fixed, the structure is simple, the adjustment is convenient, and the device is easy to realize and save.

[0019] The adjustable rods are slidably connected with the connecting rods and can be accommodated in the connecting rods, the end faces of the two connecting rods away from the fixed rod 1 are each provided with a sliding cavity extending along the connecting rod and open to one side of the end face, the adjustable rods are two and correspond to the two connecting rods, the adjustable rods are slidably arranged in the cavities along the corresponding connecting rods, and the first fixing members 6 are arranged between the adjustable rods and the corresponding connecting rods.

[0020] The mounting rod 8 is sleeved on the adjustable rod, the axis of the mounting rod 8 is parallel to the axis of the fixed rod 1, one end of the mounting rod 8 is provided with a through hole, and the other end of the mounting rod 8 is provided with an elongated slot 9 extending along the axis of the mounting rod 8, the adjustable rod corresponding to the first connecting rod 2 passes through the through hole, the adjustable rod corresponding to the second connecting rod 3 passes through the elongated slot 9 and the fixed position of the adjustable rod is adjustable, and the second fixing members 7 are arranged between the mounting rod 8 and the adjustable rod passing through the through hole of the mounting rod 8.

[0021] In the above embodiment, the structures of the first fixing members 6 and the second fixing members 7 are the same as that of the locking member, and excessive description is not given here. By arranging the adjustable rods, the length of the opening of the U-shaped frame can be extended, and the skin expansion can be performed on the elongated wound surface; the mounting rod 8 can close the opening of the U-shaped frame, and such a structure design can be applied to more complex wound surfaces in shape and position and can completely expand the circumference of the wound surface.

[0022] The skin expander further comprises a plurality of tethers (not shown in the figure), the two ends of the fixed rod 1, the free ends of the two adjustable rods and the two ends of the mounting rod 8 are each provided with a threading hole 10 for the tethers to pass through, the tethers pass through the threading holes 10 and then pass around the patient's body, so that the device can be better fixed on the patient's body, and the problem that the U-shaped frame is easily dropped from the patient's body and causes pain to the patient when the adhesive tape has insufficient adhesive force is avoided.

[0023] Working principle:

[0024] In use, according to the position and size of the postoperative wound of the patient, the opening size of the U-shaped frame is adjusted, then the corresponding rod position is fixed by screwing the knob, the device is attached to the skin of the patient, the device is fixed on the body of the patient by a plurality of medical tapes, at the same time, the wound is stretched and expanded by the medical tapes to avoid its contracture, specifically, the wound is located in the opening of the U-shaped frame of the device, one end of the medical tape is located in the opening and is attached to the skin position at the outer edge of the wound, the other end of the medical tape is wound around the corresponding rod of the U-shaped frame and is attached to the skin outside the U-shaped frame, finally, according to the position of the wound, the tether is passed through the threading hole 10, then the tether is wound on the human body, and the device is well fixed on the human body. The skin expander provided by the utility model has the advantages of simple structure, convenient use, easy adjustment, and can be applied to various wounds, and the device can be applied to wounds of various parts of the human body, such as uneven parts of the human body, such as the axillary fossa and the sacroiliac part, and has high practicability.

[0025] The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit, although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, which should be covered in the claim range of the utility model. The technical, shape and structure parts not described in detail in the utility model are all known technologies.

Claims

1. A skin expander characterized by: The utility model provides a skin expander, which comprises a U-shaped frame, one wing plate of the U-shaped frame being slidable along the length of the web to change the size of the opening of the U-shaped frame, the U-shaped frame comprising a fixed rod (1), a first connecting rod (2) and a second connecting rod (3), the fixed rod (1) corresponding to the web of the U-shaped frame, the two connecting rods corresponding to the two wing plates of the U-shaped frame, the first connecting rod (2) being fixedly connected with the fixed rod (1), the second connecting rod (3) being provided with a through hole near one end of the fixed rod (1) for the fixed rod (1) to pass through, and a locking member being arranged between the fixed rod (1) and the second connecting rod (3) to lock the relative position of the fixed rod (1) and the second connecting rod (3).

2. A skin expander according to claim 1 wherein: The second connecting rod (3) is provided with a thread hole recessed inward on the surface, the thread hole is in communication with the through hole, a screw rod is threadedly connected in the thread hole, and the screw rod is provided with a knob at one end extending out of the second connecting rod (3).

3. A skin expander according to claim 1, wherein: The utility model also comprises adjustable rods slidably connected with the connecting rods and capable of being accommodated in the connecting rods, the end faces of the two connecting rods away from the fixed rod (1) are each provided with a sliding cavity extending along the axis of the connecting rod and open to one side of the end face, the adjustable rods are two in number and correspond to the two connecting rods one by one, the adjustable rods are slidably arranged in the cavities along the axis of the corresponding connecting rods, and a first fixing member (6) is arranged between the adjustable rods and the corresponding connecting rods.

4. A skin expander according to claim 3, wherein: The adjustable rods are provided with mounting rods (8), the axes of the mounting rods (8) are parallel to the axis of the fixed rod (1), one end of each mounting rod (8) is provided with a through hole for one of the adjustable rods to pass through, and the other end of each mounting rod (8) is provided with a long slot (9) for the other adjustable rod to pass through and capable of adjusting the fixed position of the other adjustable rod, and a second fixing member (7) is arranged between the mounting rod (8) and the adjustable rod passing through the through hole of the mounting rod (8).

5. A skin expander according to claim 4 wherein: The skin expander further comprises a tether, and the two ends of the fixed rod (1), the free ends of the two adjustable rods and the two ends of the mounting rod (8) are each provided with a threading hole (10) for the tether to pass through.

Images