• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Device for removing de-epithelized connective tissues comprising a handle (1) and a cutting head (2), for removal by cutting a strip of soft tissue. The head (2) comprises a stop (5) linked perpendicularly to the end of the handle (1) to limit the penetration of the head (2) in the soft tissue to be cut, two parallel support plates (6), which start perpendicularly from the stop (5) and have respective free ends (11), a distal cutting element (8), connected in solidarity and perpendicular to the respective free ends (11), for cutting by cutting a strip of connective tissue (12) from the tissue soft, and an intermediate cutting element (7), linked in solidarity and perpendicularly between the support plates (6) and located between the distal cutting element (8) and the stop (5), for extraction by cutting of a strip of epithelium (10) soft tissue. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2737524A1
    申请号:ES201830689
    申请日:2018-07-11
    公开日:2020-01-14
    发明作者:Dominguez Jesus Ruz
    申请人:Dominguez Jesus Ruz；
    IPC主号:
    专利说明:

    [0001]
    [0002] DEEPITELIZED CONNECTIVE FABRIC EXTRACTION DEVICE
    [0003]
    [0004] OBJECT OF THE INVENTION
    [0005]
    [0006] The present invention falls within the technical field of surgical instruments, more specifically in that of surgical cutting instruments, and refers in particular to a device intended to make the incision and cut in soft tissues, preferably of the palate, which allows Obtain connective tissue grafts totally de-epithelialized and with a homogeneous morphology in a single incision.
    [0007]
    [0008] BACKGROUND OF THE INVENTION
    [0009]
    [0010] It is known as epithelial tissue or epithelium to a tissue composed of adjacent cells without intercellular substances that separate them, and includes all membranes composed of cells that cover both the exterior of the organism and the internal surfaces. The epithelium is avascular, that is, it does not contain vessels and therefore lacks blood supply, but all epithelia grow on an underlying connective tissue rich in vessels, from which an extracellular layer of support, known as the basement membrane, separates it. The epithelium has essentially protective functions, acting as a barrier.
    [0011]
    [0012] On the other hand, in the technical field of periodontics, it is known as connective tissue grafting to a minimally invasive procedure consisting of removing connective tissue from the palate, usually in the form of a strip, from an area of the mouth, and disposing it in an area in which it is needed, either for, for example, to cover a tooth or to place it around implants. The main indications of performing a connective tissue graft are gingival recessions.
    [0013]
    [0014] In the extraction or removal of the gum, a strip consisting of both the connective tissue and the epithelium, linked together, is obtained. In most periodontics techniques it is necessary to proceed with the separation and elimination of said epithelium as a previous step to the re-insertion of connective tissue in the area where it is needed, although for grafts called free gum, the epithelium is conserved as part of the graft.
    [0015]
    [0016] The current extraction procedures are complex and prolonged, sometimes requiring the making of a plurality of incisions in the patient in order to obtain a useful strip. Likewise, the techniques and devices commonly used in the separation and elimination of the epithelium to obtain the useful graft of connective tissue do not ensure the obtaining of homogenous and completely de-epithelialized morphology tissues, ready for insertion.
    [0017]
    [0018] DESCRIPTION OF THE INVENTION
    [0019]
    [0020] The object of the invention consists of a surgical device conceived for a quick, simple and simple operation by means of a single operation of homogenous and de-epithelialized connective tissues, ready for subsequent grafting in an anatomical area where it is needed. The device is preferably designed for use in obtaining tissues of the oral cavity for use in periodontics and dental surgery, although its use is not limited to said field.
    [0021]
    [0022] For this, the device is basically made up of a handle for gripping and handling, and a cutting head linked to one of the ends of the handle. The head in turn comprises a stop, to limit the penetration into the soft tissue from which the connective tissue is intended to be extracted, and two cutting elements, preferably blades, located at different heights, for extraction by cutting into the soft tissue of, in first, the outer layer of epithelium and, secondly, a strip of connective tissue free of epithelium. Two blades perpendicular to the blades act as their support, as well as limit the width of the cut made.
    [0023]
    [0024] In a preferred embodiment, the stop consists of a plate perpendicular to the end of the handle, and the blades are arranged parallel to each other and parallel in turn to said plate, to obtain homogeneous strips of tissue.
    [0025]
    [0026] The main distinguishing feature of this device lies in the simplification of the tissue extraction technique and in the reduction of operating times, obtaining a totally de-epithelialized connective tissue, and therefore ready for grafting, at the same time of removal.
    [0027]
    [0028] From the point of view of the healthcare professional, other additional advantages lie in the low risk existing in its use in extractions, and in the possibility of making a single incision, instead of several as before. The learning curve of the device is practically non-existent, and the tissue obtained for the graft is perfectly homogeneous and free of epithelium.
    [0029]
    [0030] In an alternative embodiment of the device of the invention, intended to obtain free gum grafts, one of the blades is removed, to obtain a single soft tissue strip that includes the epithelium.
    [0031]
    [0032] DESCRIPTION OF THE DRAWINGS
    [0033]
    [0034] To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. where, for illustrative and non-limiting purposes, the following has been represented:
    [0035]
    [0036] Figure 1.- Shows a perspective view of the device, in which its main constituent elements are appreciated.
    [0037]
    [0038] Figure 2.- Shows a perspective view of a detail of the device head.
    [0039]
    [0040] Figure 3.- Shows a schematic view of the device in use.
    [0041]
    [0042] PREFERRED EMBODIMENT OF THE INVENTION
    [0043]
    [0044] Next, a detailed explanation of a preferred embodiment of the object of the present invention is provided with the aid of the aforementioned figures.
    [0045] The device for removing de-epithelized connective tissues described, schematically shown in Figure 1, is made up of a gripping handle (1), and a cutting head (2), linked to one of the ends of the handle (1) .
    [0046]
    [0047] As can be seen in the attached figures, in this preferred embodiment the handle (1) has a first sector (3) and a second sector (4), angled with respect to the first sector (3) to facilitate the introduction and operation of the device in the interior of small anatomical areas, such as the oral cavity.
    [0048]
    [0049] A detail of the cutting head (2) is illustrated in Figure 2, designed to remove a soft tissue strip by cutting. Said head (2) comprises, in the first place, a limit stop (5), which in this preferred embodiment consists of a horizontal plate that extends perpendicularly from the end of the handle (1) where the head (2) is located. ), said stop (5) being designed to prevent excessive penetration of the head (2) in the soft tissue to be cut.
    [0050]
    [0051] From the stop (5) two support plates (6), perpendicular to each other, depart perpendicularly. Between both support plates (6), and integral and perpendicular to them, an intermediate cutting element (7) and a distal cutting element (8) are arranged. In this preferred embodiment, both cutting elements (7,8) are blades parallel to each other and parallel in turn to the limiting plate that forms the stop (5).
    [0052]
    [0053] The intermediate cutting element (7), closest to the stop (5) is provided with a cutting edge (9) and eliminates by cutting the outer layer of epithelium (10) of the soft tissue. The distal cutting element (8), meanwhile, is linked to respective free ends (11) of the support plates (6), also has a corresponding edge (9), and is intended to remove by cutting a strip of connective tissue (12) of the soft tissue, more specifically the outermost fringe, located in the area immediately next to the epithelium.
    [0054]
    [0055] The separation distance between the two support plates (6) determines the width of the strip of soft tissue removed. On the other hand, the separation distance between the intermediate cutting element (7) and the distal cutting element (8) determines the thickness of the strip of connective tissue (12) removed, while the distance between the intermediate cutting element (7) and the stop (5) determines the thickness of the epithelium (10) removed.
    [0056]
    [0057] Experimental studies have determined that on average the buccal epithelium (10) has thicknesses in the range of 0.2 mm to 0.3 mm, so that in the preferred embodiment of the device said separation distance between intermediate cutting element (7) and stop (5) in 0.4 mm, in order to ensure complete removal of the epithelium (10).
    [0058]
    [0059] These measures are included only by way of illustration and not by way of limitation, since there may be variations due to both genetic factors (race, sex, age) and environmental factors (diet, smoking, existence of prostheses, etc.)
    [0060]
    [0061] Figure 3 schematically shows the use of the device for obtaining de-epithelized connective tissue. After the previous insertion of the head (2) into the soft tissue, with a limited penetration by the stop (5), the displacement of said device allows to obtain in a single intervention, a strip of epithelium (10) and a strip of connective tissue (12), of homogeneous thickness and free of epithelium (10), ready to be grafted.
    权利要求:
    Claims (5)
    [1]
    1. Device for extracting de-epithelized connective tissues comprising:
    - a grip handle (1), and
    - a cutting head (2), linked to one of the ends of the handle (1), for removal by cutting a soft tissue strip,
    the device being characterized in that the head (2) comprises:
    - a stop (5) linked perpendicularly to the end of the handle (1) to limit the penetration of the head (2) in the soft tissue to be cut,
    - two parallel support plates (6), which start perpendicularly from the stop (5) and have respective free ends (11),
    - a distal cutting element (8), jointly and severally linked to the respective free ends (11), for cutting by cutting a strip of connective tissue (12) from the soft tissue, and
    - an intermediate cutting element (7), connected jointly and perpendicularly between the support plates (6) and located between the distal cutting element (8) and the stop (5), for extraction by cutting of a strip of epithelium (10) Soft tissue
    [2]
    2. Extraction device according to claim 1 characterized in that the stop (5) is a plate.
    [3]
    3. Extraction device according to claim 1 characterized in that the handle (1) has a first sector (3) and a second sector (4), angled with respect to the first sector (3) to facilitate the introduction and operation of the device .
    [4]
    4. Extraction device according to claim 1 characterized in that the distal cutting element (8) and intermediate cutting element (7) are parallel to each other.
    [5]
    5. Extraction device according to claim 2 characterized in that the distal cutting element (8), the intermediate cutting element (7) and the stop plate (5) are parallel to each other.
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    同族专利:
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    WO2020012048A1|2020-01-16|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4221222A|1978-06-12|1980-09-09|Detsch Steven G|Medical cutting instrument|
    US20010047177A1|1999-12-07|2001-11-29|Klaus Kasten|Hand-held device for preparation of a skin graft by tangential excision of layers of tissue|
    ES2315330T3|2001-08-02|2009-04-01|Aesculap Ag|SURGICAL KNIFE.|
    WO2004071313A2|2003-02-10|2004-08-26|Applied Tissue Technologies, Llc|Apparatus for dermal tissue harvesting|
    KR100798683B1|2007-08-27|2008-01-28|주식회사 메가젠임플란트|Dental instrument for cutting soft tissue|
    EP2314250A2|2008-08-12|2011-04-27|Megagen Implant Co., Ltd.|Dental instrument for cutting soft tissue|
    CN103211639A|2013-03-19|2013-07-24|中国人民解放军第三军医大学第三附属医院|Subcutaneous tissue fat remover|
    CN104983451A|2015-07-10|2015-10-21|郭秀丽|Skin transplanting device for dermatological department operations|
    法律状态:
    2020-01-14| BA2A| Patent application published|Ref document number: 2737524 Country of ref document: ES Kind code of ref document: A1 Effective date: 20200114 |
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201830689A|ES2737524B2|2018-07-11|2018-07-11|DEEPITELIZED CONNECTIVE TISSUE EXTRACTION DEVICE|ES201830689A| ES2737524B2|2018-07-11|2018-07-11|DEEPITELIZED CONNECTIVE TISSUE EXTRACTION DEVICE|
    PCT/ES2019/070471| WO2020012048A1|2018-07-11|2019-07-04|Device for extracting de-epithelialised connective tissue|
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