Micro trephine device for micro seed coat

Abstract

The utility model relates to the technical field of medical instruments, and discloses a micro trephine device for seed coats of micro coats, which comprises a trephine gun handle, a micro drill bit is arranged at the left end of the trephine gun handle, the micro drill bit is composed of a hollow cover, a plurality of trephine bits and a connector, the number of the trephine bits is larger than that of the hollow cover, and the number of the trephine bits is larger than that of the connector. The right ends of the multiple ring drill bits are evenly distributed on the left side of the hollow cover in a matrix mode, and the left end of the connector is located in the middle of the right side of the hollow cover. The trephine gun handle, the micro drill bit, the air guide hose, the positive and negative pressure dual-purpose air pump and the air pump controller are matched, the air pump principle is used, in the micro skin taking stage, when the micro drill bit is used for micro skin taking, and when skin taking and seed skin taking are conducted through negative pressure and mechanical cutting force, the micro drill bit pierces into granulation tissue of a wound surface, and the purpose of skin taking is achieved. The miniature skin is planted in granulation tissue by using positive pressure, the method is processed and mechanized, better operability is improved, operation requirements are simple, popularization is convenient, and better service is provided for patients.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field more particularly to a kind of microdermal grafting with micro trepanning device. BACKGROUND

[0002] With the aggravation of population aging, and the development of traffic tools, in recent years, the difficult healing wounds such as bedsores, diabetic foot, blood supply barrier ulcer, post-traumatic ulcer, etc. are significantly increased. After systemic support treatment and wound preparation, most of the wounds can be closed by surgery such as transferring blood pedicle tissue flap, large skin graft or hard skin skin graft. However, when the patient cannot tolerate general anesthesia, spinal anesthesia or surgery with greater trauma due to insufficient organ function, and the patient and family refuse to undergo surgery with greater trauma, the wound healing is slow by simply relying on dressing change, negative pressure suction, platelet-rich plasma and other techniques, and the long-term existence of the wound may lead to the deterioration of the patient's general condition, causing great pain and social and family burden to the patient and family;

[0003] The use of minimally invasive micro-thin skin grafting for treating wounds of patients with poor basic conditions can achieve good effect. In clinical work, it is found that the expansion of micro-thin skin is not only the expansion and fusion of epidermis, but also the expansion of dermal tissue, which is better than the crawling and spreading of wound edges to close the wound in terms of wear resistance and elasticity.

[0004] The traditional micro-thin skin grafting method is as follows: a smaller area of full-thickness skin (usually only 2cm x 1cm skin) is cut by surgical knife under local anesthesia, the skin is cut into 1x1mm micro-thin skin for standby, the donor site is directly sutured and closed, the wound is disinfected with iodophor and flushed with 0.9% sodium chloride solution, and then 0.25% lidocaine is used for local infiltration anesthesia, a 20ml syringe needle is inserted at 45° obliquely on the granulation wound, and then the micro-thin skin is transplanted and implanted into the needle puncture. The distance between micro-thin skin transplantation is about 0.5cm~1 cm. This scheme is time-consuming and labor-intensive, and has high technical requirements for the operator, especially the skin grafting person, which is directly related to the survival rate of micro-thin skin, and cannot form a process operation. UTILITY MODEL CONTENT

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a microdermal grafting with micro trepanning device to solve the problems in the above background art.

[0006] The utility model provides following technical scheme: a kind of micro ring drill device for microskin, including trephine gun handle, the left end of trephine gun handle is equipped with micro drill bit, the micro drill bit is composed of hollow cover, trephine head and connecting head, the number of trephine head is multiple, the right end of multiple trephine head is evenly distributed in the left side of hollow cover in matrix, the left end of connecting head is located in the middle of hollow cover right side, hollow cover, trephine head and connecting head are integrally formed, internal thread is set in the inside of connecting head, external thread is set in the left end of trephine gun handle outer wall, the internal thread of connecting head right end is connected in the left end of trephine gun handle outer wall, the right end of trephine gun handle is fixedly connected with air hose, one end of air hose is equipped with positive and negative pressure dual-purpose air pump, one end of air hose is fixedly installed with the output end of positive and negative pressure dual-purpose air pump, air pump controller is fixedly installed on the front of trephine gun handle;

[0007] Further, the air pump controller is fixedly connected with a wire on one side, and the air pump controller is electrically connected with the positive and negative pressure dual-purpose air pump through the wire.

[0008] Further, the diameters of the multiple trephine heads are all 1mm, the density intervals of the multiple trephine heads are all 4mm, and the lengths of the multiple trephine heads are all 3-4mm.

[0009] Further, the left ends of the multiple trephine heads are all arc chamfers, and the arc chamfers are provided with cutting edges.

[0010] The utility model has the following technical effects and advantages:

[0011] 1. The utility model discloses a trephine gun handle, a micro drill bit, an air hose, a positive and negative pressure dual-purpose air pump and an air pump controller are matched, and the air pump principle is used. In the microskin taking stage, the micro drill bit is used to take the microskin by using negative pressure and mechanical cutting force. When the microskin is planted, the micro drill bit is inserted into the granulation tissue of the wound, and the microskin is planted in the granulation tissue by using positive pressure. The method is processed and mechanized, better operability is improved, the operation requirement is simple, the method is easy to popularize, and the method is better for the service of patients. DRAWINGS

[0012] Figure 1 It is the whole structure schematic diagram of the utility model.

[0013] Figure 2 It is the trephine gun handle structure schematic diagram of the utility model.

[0014] Figure 3 It is the micro drill bit structure sectional view schematic diagram of the utility model.

[0015] Figure 4 It is the structure schematic diagram when the micro drill bit takes the microskin.

[0016] The attached diagram is labeled as follows: 1. Pipe drill handle; 2. Miniature drill bit; 21. Hollow cover; 22. Pipe drill bit; 23. Connector; 3. Air hose; 4. Air pump controller; 5. Wire. Detailed Implementation

[0017] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The micro-peel seed micro-ring drill device involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] like Figures 1-4 As shown, a micro-ring drill device for seed coats includes a ring drill handle 1. A micro drill bit 2 is located at the left end of the handle 1. The micro drill bit 2 consists of a hollow cover 21, ring drill bits 22, and a connector 23. Multiple ring drill bits 22 are arranged in a matrix on the left side of the hollow cover 21. The left end of the connector 23 is located in the middle of the right side of the hollow cover 21. The hollow cover 21, ring drill bits 22, and connector 23 are integrally formed. The inner surface of the connector 23... The device has an internal thread, and the left end of the outer wall of the pendant handle 1 has an external thread. The internal thread of the right end of the connector 23 is connected to the left end of the outer wall of the pendant handle 1. This device is made of sterilizable material and can be sterilized after use. The connector 23 of the micro drill bit 2 can be directly screwed onto the left end of the pendant handle 1, which is convenient for installing the micro drill bit 2. The micro drill bit 2 is a disposable sterile consumable and can be replaced after use. The micro drill bit 2 can be individually packaged using medical packaging materials.

[0019] The diameter of the multiple trephine bits 22 is 1 mm, the density spacing of the multiple trephine bits 22 is 4 mm, the length of the multiple trephine bits 22 is 3 to 4 mm, and the left end of the multiple trephine bits 22 is an arc-shaped bevel, with a cutting edge on the arc-shaped bevel. The arc-shaped bevel of the trephine bit 22 is a relatively thin cutting edge, which is conducive to penetrating into the skin for cutting operations.

[0020] A ducted air hose 3 is fixedly connected to the right end of the peening drill handle 1. One end of the ducted air hose 3 is equipped with a dual-purpose positive and negative pressure air pump. One end of the ducted air hose 3 is fixedly installed to the output end of the dual-purpose positive and negative pressure air pump. An air pump controller 4 is fixedly installed on the front of the peening drill handle 1. A wire 5 is fixedly connected to one side of the air pump controller 4. The air pump controller 4 is electrically connected to the dual-purpose positive and negative pressure air pump through the wire 5. The negative and positive pressures and pressure magnitude of the dual-purpose positive and negative pressure air pump can be adjusted through the air pump controller 4.

[0021] In summary, asFigures 1-4 As shown, when the microskin is taken, the connecting head 23 of the micro drill bit 2 is screwed on the left end of the trephine gun handle 1, the plurality of trephine bits 22 of the micro drill bit 2 are pierced into the skin of the skin area of the patient, the micro drill bit 2 is inclined by 30° to 45°, the arc-shaped chamfer of the trephine bit 22 is used for cutting, the microskin strip is cut off through the cutting force, the positive and negative pressure dual-purpose air pump is controlled by the air pump controller 4 to work, the negative pressure of the positive and negative pressure dual-purpose air pump is generated to suck the microskin strip, when the skin is planted, the micro drill bit 2 is placed on the granulation of the wound surface, the trephine bit 22 is pierced into the granulation tissue of the wound surface, the positive pressure of the positive and negative pressure dual-purpose air pump is generated by the air pump controller 4 to control the positive and negative pressure dual-purpose air pump, and the microskin is planted in the granulation tissue.

[0022] Finally, a few points should be noted: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0023] Secondly: the utility model discloses the embodiment in the drawing, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0024] Finally: the above only for the preferred embodiment of the utility model has, and does not limit the utility model, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A micro-dermatome micro-burr device comprising a burr gun handle (1), characterized in that, The left end of the trephine gun handle (1) is provided with a micro drill bit (2), the micro drill bit (2) is composed of a hollow cover (21), a trephine bit (22) and a connecting head (23), the number of the trephine bit (22) is multiple, the right ends of the multiple trephine bits (22) are uniformly distributed in a matrix form on the left side of the hollow cover (21), the left end of the connecting head (23) is located at the middle of the right side of the hollow cover (21), the hollow cover (21), the trephine bit (22) and the connecting head (23) are integrally formed, the inside of the connecting head (23) is provided with an internal thread, the left end of the outer wall of the trephine gun handle (1) is provided with an external thread, the internal thread of the right end of the connecting head (23) is connected to the left end of the outer wall of the trephine gun handle (1), the right end of the trephine gun handle (1) is fixedly connected with an air guide hose (3), one end of the air guide hose (3) is provided with a positive and negative pressure dual-purpose air pump, one end of the air guide hose (3) is fixedly installed with the output end of the positive and negative pressure dual-purpose air pump, the front of the trephine gun handle (1) is fixedly installed with an air pump controller (4).

2. The micro-punch graft micro-burr device according to claim 1, characterized in that: One side of the air pump controller (4) is fixedly connected with a wire (5), and the air pump controller (4) is electrically connected with the positive and negative pressure dual-purpose air pump through the wire (5).

3. The micro-punch graft micro-burr device according to claim 1, characterized in that: The diameters of the multiple trephine bits (22) are all 1mm, the density spacing of the multiple trephine bits (22) is 4mm, and the lengths of the multiple trephine bits (22) are all 3-4mm.

4. The micro-punch graft micro-burr device according to claim 1, characterized in that: The left ends of the multiple trephine bits (22) are all arc chamfers, and the arc chamfers are provided with cutting edges.

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