JP2010088798A - Mat for operation instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mat for an operation instrument, preventing the operation instrument from slipping down without magnetic force, easily picking up the operation instrument by hand, prevented from heat damage due to a high temperature instrument, and stably installed on surfaces of various shapes. <P>SOLUTION: This mat 10 for an operation instrument includes: a body 16 having a first face 12 and a second face 14 on the other side of the first face 12; a projecting edge 22 provided along the edge 12a of the first face 12 of the body 16 defining a main support surface 18 and a sub-support surface 20 higher than the main support surface 18 on the first face 12; a non-woven fabric layer 24 provided on the first face 12 of the body 16 and having heat resistance and anti-slippage; and a pressure sensitive adhesive layer 26 provided on the second face 14 of the body 16. The non-woven fabric layer 24 is formed of non-woven fabric having thermal decomposition temperature of 175°C or higher and a coefficient of stainless steel static friction of 1.10 or more in drying. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a surgical instrument mat.

  During the operation, a region for the surgical staff to temporarily place the surgical instrument is prepared in a drape that covers the patient, a Mayo stand installed near the operating table, and the like. It is desirable that the region for temporarily placing the surgical instrument during the operation can prevent the surgical instrument from slipping from the region.

  For example, Patent Document 1 discloses a friction control article that can be used as a medical drape. The friction control article includes a support layer having a first surface provided with an array of generally upright stems, at least partially formed from an elastomeric material. The first surface of the support layer has a frictional characteristic with a stainless steel static coefficient of friction of at least 0.6 when dried. An additional support layer such as a reinforcing layer, an adhesive layer, or a release liner may be provided on the second surface of the support layer opposite to the first surface, or a stem arrangement similar to that of the first surface may be provided. it can. As a preferred embodiment, a medical drape comprised of a double-sided friction control article can hold a surgical instrument and itself covers the patient or is placed on other surfaces such as a drape without using an adhesive It is described that it is possible.

  Patent document 2 discloses the surgical drape provided with the sheet | seat which covers a patient, and the instrument holding | maintenance part provided permanently in a sheet | seat. The instrument holding part has a bottom part and at least one side part, and forms a recess for placing a surgical instrument on the surface of the sheet. It is described that an additional layer that provides magnetic characteristics, sliding characteristics, etc. can be attached to the bottom part of the instrument holding part, and the instrument holding part prevents the surgical instrument from sliding down during the operation and is free of hand. It forms a visible neutral region for the delivery technique.

JP 2005-505379 A JP 2006-511285 A

  In addition to the above-mentioned anti-slip function of surgical instruments, the area for temporarily placing surgical instruments during surgery can be used by surgical staff to easily and accurately pick up surgical instruments placed in the area. It is desired to be able to avoid thermal damage caused by a high heat instrument such as the blade edge of an electric knife immediately after that, and to stably prepare a surface having various shapes selected as necessary. In addition, the structure which hold | maintains a surgical instrument with a magnetic force may magnetize a metal surgical instrument, and it may be difficult to hold | maintain a nonmetallic surgical instrument.

  It is an object of the present invention to prevent a surgical instrument from slipping without using magnetic force in a surgical instrument mat used for placing a surgical instrument, and to easily and accurately pick up the surgical instrument by hand. It is an object of the present invention to provide a surgical instrument mat that can avoid thermal damage caused by the above and can be stably installed on surfaces of various shapes.

  In order to achieve the above object, one embodiment of the present invention includes a main body having a first surface and a second surface opposite to the first surface, and an edge of the first surface of the main body. And a non-woven fabric layer provided on the first surface of the main body and having heat resistance and non-slip properties, a main support surface and a sub-support surface positioned higher than the main support surface. There is provided a surgical instrument mat comprising an adhesive layer provided on a second surface.

  Since the surgical instrument mat of the present invention has an adhesive layer on the second surface of the main body, it can be stably installed on surfaces of various shapes selected by the surgical staff as needed. In addition, the heat-resistant and non-slippery non-woven fabric layer provided on the first surface of the main body can avoid thermal damage of the non-woven fabric layer due to a high-heat instrument such as the blade edge of an electric knife immediately after use, and without using magnetic force, The sliding of the surgical instrument from the instrument mat can be surely prevented. Further, since the projecting edge portion is provided on the first surface of the main body, a part of the surgical instrument supported mainly by the main support surface can be placed against the sub-support surface, so that the surgical staff can put the surgical instrument on the hand. Can be picked up easily and accurately.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Corresponding components are denoted by common reference symbols throughout the drawings.

  1 to 5 show a surgical instrument mat 10 according to an embodiment of the present invention. The surgical instrument mat 10 is provided along a main body 16 having a first surface 12 and a second surface 14 opposite to the first surface 12, and an edge 12 a of the first surface 12 of the main body 16. Are provided on the first surface 12 of the main body 16 and the projecting edge portion 22 that defines the main support surface 18 and the sub-support surface 20 located higher than the main support surface 18, and has heat resistance and slip resistance. The nonwoven fabric layer 24 and an adhesive layer 26 provided on the second surface 14 of the main body 16 are provided.

  The main body 16 is a plate-like member that can stably support a wide variety of surgical instruments S (FIG. 5) on the first surface 12, and can preferably substantially retain its own shape against the weight of the surgical instrument S. On the other hand, it is flexible enough to bend along the surface of various shapes selected by the surgical staff as needed, such as a drape that covers the patient and a Mayo stand installed beside the operating table. Have. The main body 16 can be made from various materials such as resin foam such as polyurethane foam, cardboard such as cardboard, wood such as plywood, rubber, leather, and the like. In particular, the main body 16 formed of polyurethane foam has the advantages of being light and easy to bend and having excellent handleability. Although the illustrated main body 16 has a rectangular flat plate shape in plan view, the shape and dimensions of the main body 16 are not particularly limited, and can be appropriately selected in consideration of ease of handling in the field. For example, the shape in plan view includes a circle, an ellipse, an oval (a shape in which two semicircles are connected by a pair of parallel straight lines), a rectangle with rounded corners, and the like.

  The illustrated surgical instrument mat 10 includes a pair of protruding edges 22 along a pair of long edges 12 a of the first surface 12 of the main body 16. The protruding edges 22 are part of the main body 16 and can have the same physical properties as the main body 16. The main support surface 18 is formed in a region between the pair of projecting edge portions 22, and the sub support surface 20 is formed at the top end of each projecting edge portion 22. The main support surface 18 is a surface whose main function is to stably support a wide variety of surgical instruments S. Preferably, the main support surface 18 occupies more than half of the first surface 12, and the main body 16 undergoes deformation such as bending. It has a substantially flat surface shape as a whole. The sub-support surface 20 is a surface that supports a part of various surgical instruments S supported by the main support surface 18 and functions to partially lift the surgical instrument S from the first surface 12. Even if it is less than half the area, sufficient function can be demonstrated. By placing a part of the surgical instrument S supported mainly by the main support surface 18 against the sub-support surface 20 against the first surface 12 of the main body 16, the surgical staff can easily and accurately place the surgical instrument S by hand. You can pick up.

  The shape and dimensions of the projecting edge portion 22 are not particularly limited, and can be appropriately selected in consideration of on-site handling. For example, the height difference H (FIG. 2) between the main support surface 18 and the sub-support surface 20 defined by the protruding portion 22 is not particularly limited, but a portion of the surgical instrument S supported by the main support surface 18 is not limited. It is desirable that the dimensions are such that the stability of the surgical instrument S is not impaired when it is leaned against the sub-support surface 20. Further, the pair of protruding edge portions 22 can have different shapes and dimensions (FIG. 3). The position and number of the protruding edges 22 can be selected as appropriate in consideration of handling at the site. For example, the protruding edges 22 are arranged along only one edge of the rectangular main body 16 (FIG. 4 ( a)), the protruding edge portion 22 can be disposed on the entire outer edge of the main body 16 (FIG. 4B). Further, a step may be provided on the sub-support surface 20 at the top end of the projecting edge portion 22, or the sub-support surface 20 may be divided into a plurality of parts by appropriate slits or the like. FIG. 4C shows the surgical instrument mat 10 in which a continuous protruding edge 22 is formed along the entire outer peripheral edge of the elliptical main body 16 in plan view.

  In the illustrated embodiment, the main body 16 has a flat main portion 16A having a main support surface 18 and a first average thickness T1, and a second average thickness having a sub-support surface 20 and larger than the first average thickness T1. And a wall-like sub-portion 16B having T2 (FIG. 2). With this configuration, moderate rigidity is imparted to the projecting edge portion 22, so that the surgical instrument S partially placed on the sub-support surface 20 is stabilized by the cooperation of the main support surface 18 and the sub-support surface 20. Can be supported. A configuration in which the entire main body 16 has a substantially uniform thickness (that is, a configuration in which the edge of the flat plate-like main body 16 is bent upward) may be employed.

  The main body 16 can be integrally formed from the same material as a whole. Alternatively, the body 16 can be made by connecting together a plurality of parts individually molded from the same or different materials. For example, the main portion 16A and the sub-portion 16B described above can be molded separately from the same or different materials and then fixedly connected to each other by means such as adhesion or welding.

  The nonwoven fabric layer 24 is a sheet-like member having required heat resistance and non-slip properties, and is spread so as to cover the entire first surface 12 of the main body 16 and is fixed by a fixing means such as an adhesive (not shown). Fixed to the first surface 12. The nonwoven fabric layer 24 has a flexibility that desirably follows the uneven shape of the first surface 12 of the main body 16 accurately. With this configuration, the surgical instrument S is indirectly placed on the first surface 12 (the main support surface 18 and the sub support surface 20) of the main body 16 via the nonwoven fabric layer 24. In this state, the surgical instrument S is stably supported without slipping on the first surface 12 due to the non-slip property exhibited by the nonwoven fabric layer 24. For example, when the surgical instrument mat 10 is installed on an appropriate inclined surface, The sliding of the surgical instrument S from the first surface 12 is prevented. Further, due to the heat resistance of the non-woven fabric layer 24, for example, when a high heat instrument such as an electric knife immediately after use is placed on the first surface 12, the non-woven fabric layer 24 (and preferably the first surface 12) is thermally damaged. Is avoided, and the high-heat apparatus is stably supported. The nonwoven fabric layer 24 can be produced from, for example, a polyurethane nonwoven fabric excellent in heat resistance and slip resistance. In addition, the material of the nonwoven fabric layer 24 and the evaluation of heat resistance and slip resistance will be described later.

  The shape and dimensions of the nonwoven fabric layer 24 are not particularly limited, and can be appropriately selected in consideration of on-site handling. However, considering the above-described functions of the main support surface 18 and the sub-support surface 20 of the main body 16, it is desirable that the nonwoven fabric layer 24 has a shape and dimensions that cover at least the entire main support surface 18 (FIG. 3). . Further, the nonwoven fabric layer 24 is not limited to the illustrated single layer structure, and may have a multilayer structure. In this case, the outermost nonwoven layer separated from the first surface 12 of the main body 16 is formed from a functional material having required heat resistance and slip resistance, and the lower nonwoven layer is formed from an inexpensive material as a reinforcing layer. You can also

  The pressure-sensitive adhesive layer 26 has required adhesiveness so that the main body 16 can be easily and reliably fixed to various shapes of surfaces selected by the surgical staff as needed. The shape and dimensions of the pressure-sensitive adhesive layer 26 are not particularly limited, but are preferably arranged so as to cover the entire second surface 14 of the main body 16 (FIG. 2). According to this configuration, the surgical instrument mat 10 can be stably installed on the installation target surface by appropriately pressing an arbitrary portion of the main body 16 against the installation target surface of the surgical instrument mat 10. Alternatively, a plurality of pressure-sensitive adhesive layers 26 each having a desired shape can be formed at a desired location on the second surface 14 of the main body 16 (FIG. 3). Even in this configuration, the surgical instrument mat 10 can be stably installed on the installation target surface by accurately pressing the individual adhesive layers 26 against the installation target surface.

  The material of the pressure-sensitive adhesive layer 26 is not particularly limited, but is preferably formed from a generally available double-sided pressure-sensitive adhesive tape in consideration of ease of handling and cost. In consideration of replacing the surgical instrument mat 10 with a plurality of different installation target surfaces as required, it is desirable to form the pressure-sensitive adhesive layer 26 with a removable material. In consideration of the storage and handling of the surgical instrument mat 10, the unused surgical instrument mat 10 may include a release paper 28 that is attached to the adhesive surface 26 a of the adhesive layer 26. desirable.

  The surgical instrument mat 10 can further include a functional component 30 provided on the first surface 12 of the main body 16 (FIG. 5). The functional component 30 is a component having a specific function for the surgical instrument S, such as a needle counter, a small tray, and a chip cleaner. In the illustrated example, the functional component 30 is provided on the main support surface 18 of the main body 16, but the functional component 30 can also be installed on the sub-support surface 20. In any case, it is desirable to provide the functional component 30 at a position that does not interfere with the surgical instrument support function, which is the main function of the surgical instrument mat 10.

  The functional component 30 may be permanently provided on the first surface 12 of the main body 16 in advance, or may be retrofitted at a desired position on the first surface 12 of the main body 16 as required in the field. Good. In any case, the functional component 30 can be installed directly on the first surface 12 of the main body 16 or can be installed on the nonwoven fabric layer 24. In consideration of the general use of the surgical instrument mat 10, it is desirable to provide the functional component 30 on the nonwoven fabric layer 24 as a retrofit if necessary. In this case, the functional component 30 can be attached to the nonwoven fabric layer 24 using an appropriate adhesive, a hook-and-loop fastener, or the like. Moreover, the fastener element 32 which can hold | maintain the functional component 30 so that attachment or detachment is possible can also be previously provided in the desired position of the nonwoven fabric layer 24. FIG. For example, a configuration in which one of the hook and loop fastener elements is installed on the nonwoven fabric layer 24 as the fastener element 32 and the other fastener element is installed on the functional component 30 can be adopted.

  The surgical instrument mat 10 having the above-described configuration is installed on a drape that covers the patient, a Mayo stand equipped near the operating table, or the like as an area for the surgical staff to temporarily place the surgical instrument during surgery. At this time, due to the action of the adhesive layer 26, the surgical instrument mat 10 can be stably installed on various surfaces selected by the surgical staff as needed. Further, due to the action of the non-slip non-woven fabric layer 24, it is possible to reliably prevent the surgical instrument from sliding off from the surgical instrument mat 10 without using magnetic force. Further, by the action of the projecting edge portion 22 provided on the first surface 12 of the main body 16, a part of the surgical instrument supported mainly by the main support surface 18 can be placed against the sub-support surface 20. The staff can easily and accurately pick up the surgical instrument by hand. Further, due to the action of the heat-resistant nonwoven fabric layer 24, thermal damage to the nonwoven fabric layer 24 due to a high-heat apparatus such as an electric knife blade immediately after use can be avoided.

  The surgical instrument mat 10 having such various effects can be suitably used as, for example, a neutral zone for preventing a surgical staff from being stabbed by a surgical instrument. In this case, by providing the projecting edge portion 22 along the edge of the main body 16, the appearance of the surgical instrument mat 10 becomes more characteristic, and there is also a secondary effect of visually highlighting the neutral zone. Is done. Further, the surgical instrument mat 10 having a simple structure that does not use a magnet is easy to sterilize and incinerate and can be manufactured from a relatively inexpensive material, and thus is useful as a disposable medical device.

  Example 1 of a surgical instrument mat was prepared with the following configuration. “3M ™ Reston ™™ adhesive foam pad (product number 1560M)”, a polyurethane foam product with an adhesive from 3M (Minnesota, USA), was cut to 200 mm (width) × 300 mm (length) × A main portion 16A (12 pieces) of 12 mm (thickness) and a sub-portion 16B (two pieces) of 12 mm (width) × 300 mm (length) × 25 mm (thickness) are formed together with the pressure-sensitive adhesive layer 26. The sub part 16B was fixed to both long sides of 16A, and the main body 16 with the adhesive layer 26 was produced. In addition, “product number 9904”, which is a polyurethane nonwoven fabric product with an adhesive, manufactured by 3M Company (Minnesota, USA) was cut into a shape corresponding to the first surface 12 of the main body 16 to produce a nonwoven fabric layer 24. And the nonwoven fabric layer 24 was affixed on the whole 1st surface 12 of the main body 16, and the mat 10 for surgical instruments (FIG. 1) was produced.

  As Example 2 of the surgical instrument mat, while producing the same main body 16 with the adhesive layer 26 as Example 1, "Product No. 9907T" which is a polyurethane nonwoven fabric product with an adhesive of 3M Company (Minnesota, USA) The nonwoven fabric layer 24 was produced by cutting into a shape corresponding to the first surface 12 of the main body 16. And the nonwoven fabric layer 24 was affixed on the whole 1st surface 12 of the main body 16, and the mat 10 for surgical instruments (FIG. 1) was produced.

  As Comparative Example 1 of the surgical instrument mat, a mat made only of the main body 16 with the adhesive layer 26 of Example 1 (that is, the nonwoven fabric layer 24 is not provided on the first surface 12) was prepared.

  As Comparative Example 2 of the surgical instrument mat, the part of the polyethylene sheet excluding the magnet of “magdrape” which is a drape product with magnets of AMCO Corporation (Chiyoda-ku, Tokyo) is used as the adhesive layer 26 of Example 1. A mat adhered to the first surface 12 of the attached main body 16 was prepared.

[Experiment 1] Evaluation of heat resistance Using the "Force 2 Electrosurgical Generator" of Valleylab (Colorado, USA) with an incision mode output of 50 W, using an electric scalpel on the counter electrode "Product No. 9165" of 3M (Minnesota, USA) The meat (pork) placed on the incision was cut open, and the temperature of the blade of the electric knife about 1 second later was measured with a radiation thermometer “IT-550” manufactured by Horiba, Ltd. (Kyoto City). The average temperature of the three measurements was 171 ° C. Therefore, it was recognized that the nonwoven fabric layer used for the surgical instrument mat of the present invention has the expected effect on the electric knife when made from a material having a thermal decomposition temperature of 175 ° C. or higher.

  Therefore, the nonwoven fabric layer 24 (“9904”) alone of the surgical instrument mat 10 of Example 1, the nonwoven fabric layer 24 (“9907T”) alone of the surgical instrument mat 10 of Example 2, and the mat (“ 1560M ") using TA Instruments (Delaware, USA) thermogravimetric measurement device" Q600 "and observed the change in weight when the sample temperature was increased from room temperature to 800 ° C at a rate of 10 ° C / min. The pyrolysis temperature was measured. In addition, since the melting point of the polyethylene sheet of the mat of Comparative Example 2 is 107 ° C. and it is clear that it has no heat resistance against the blade temperature of the electric knife, it was excluded from the subject of Experiment 1. The measurement results are shown in Table 1.

[Experiment 2] Evaluation of non-slipperiness Non-woven fabric layer 24 ("9904") of surgical instrument mat 10 of Example 1, single-layer nonwoven fabric layer 24 ("9907T") of surgical instrument mat 10 of Example 2, comparative example Each of the 1 mat (“1560M”) and the polyethylene sheet of Comparative Example 2 is pulled in a direction parallel to the plate surface with a 1 kg weight placed on a stainless steel plate placed horizontally. Then, the coefficient of static friction in a dry state was measured. The measurement results are shown in Table 2.

  Further, as schematically shown in FIG. 6, each mat for the surgical instrument mat 10 of Example 1, the surgical instrument mat 10 of Example 2, the mat of Comparative Example 1, and the mat of Comparative Example 2 is used. The surgical instrument support surface (Examples 1 and 2 are the surface of the nonwoven fabric layer 24, Comparative Example 1 is the surface of the main body 16, and Comparative Example 2 is the surface of the polyethylene sheet) is tilted 15 degrees with respect to the horizontal plane, and the surgical instrument S As an example, a stainless steel forceps (27.7 g) is placed on the surgical instrument support surface F with its tip facing downward until the distal end of the forceps S moves 5 cm after the forceps S starts to slide on the surgical instrument support surface F. The time required for was measured. The measurement results are shown in Table 2.

  As is apparent from Tables 1 and 2, the surgical instrument mat 10 of Examples 1 and 2 has the nonwoven fabric layer 24 having the desired heat resistance against the electric knife and can be selected during actual surgery. It was confirmed that when the surgical instrument mat 10 is installed on the target surface, the surgical instrument S has the desired non-slip property that can prevent the surgical instrument S from sliding down. On the other hand, although the mat of Comparative Example 1 has sufficient heat resistance with respect to the electric knife, it was confirmed that the non-slipperiness with respect to the surgical instrument S is somewhat insufficient because there is no nonwoven fabric layer 24. Moreover, it was confirmed that the mat of Comparative Example 2 lacks both heat resistance and slip resistance.

  From the above experimental results, the surgical instrument mat according to the present invention includes a main body made of polyurethane foam and a non-woven fabric layer made of polyurethane non-woven fabric having a thermal decomposition temperature of 175 ° C. or higher and a stainless steel static friction coefficient when dried of 1.10 or higher. It is desirable to provide.

1 is a perspective view of a surgical instrument mat according to an embodiment of the present invention. It is a side view of the surgical instrument mat of FIG. It is a side view of the surgical instrument mat by a modification. (A) A perspective view of a surgical instrument mat according to another modification, (b) a perspective view of a surgical instrument mat according to still another modification, and (c) a perspective view of a surgical instrument mat according to still another modification. It is a top view of the mat for surgical instruments by other embodiment of this invention. It is a figure explaining one method of the experiment which evaluates the non-slip property of the mat for surgical instruments of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Surgical instrument mat | matte 12 1st surface 14 2nd surface 16 Main body 18 Main support surface 20 Subsupport surface 22 Projection edge part 24 Nonwoven fabric layer 26 Adhesive layer 30 Functional component 32 Fastener element

Claims (8)

A body having a first surface and a second surface opposite the first surface;
A projecting edge portion provided along an edge of the first surface of the main body, and defining a main support surface and a sub-support surface at a position higher than the main support surface on the first surface;
A non-woven fabric layer provided on the first surface of the main body and having heat resistance and slip resistance;
An adhesive layer provided on the second surface of the body;
A surgical instrument mat comprising:   The surgical instrument mat according to claim 1, wherein the nonwoven fabric layer is formed of a nonwoven fabric having a thermal decomposition temperature of 175 ° C or higher.   The mat for a surgical instrument according to claim 1 or 2, wherein the nonwoven fabric layer is formed of a nonwoven fabric having a stainless steel static friction coefficient of 1.10 or more when dried.   The main body includes a main portion having the main support surface and a first average thickness, and a sub-portion having the sub support surface and a second average thickness larger than the first average thickness. The surgical instrument mat according to any one of 1 to 3.   The surgical instrument mat according to claim 1, wherein the main body is formed of polyurethane foam.   The mat for a surgical instrument according to any one of claims 1 to 5, wherein the nonwoven fabric layer is formed of a polyurethane nonwoven fabric.   The surgical instrument mat according to any one of claims 1 to 6, further comprising a functional component provided on the first surface of the main body and having a specific function for the surgical instrument.   The surgical instrument mat according to claim 7, further comprising a fastener element provided on the first surface of the main body and detachably holding the functional component.

Images