CN112932798A - Non-woven fabric surgical pad, non-woven fabric surgical pad sterilization bag and application thereof - Google Patents

Abstract

The invention discloses a non-woven fabric surgical pad, a non-woven fabric surgical pad sterilization bag and application thereof, wherein the non-woven fabric surgical pad comprises a liquid absorption pad and two X-ray tracing lines with different colors, the liquid absorption pad is made of spunlace non-woven fabric with preset tensile strength, and the preset tensile strength meets the strength requirement of surgical dressings; the two X-ray tracing lines are connected to the surface of the liquid absorption pad through an ultrasonic welding process, the color of one of the two X-ray tracing lines is different from that of the liquid absorption pad before an operation, and the color of the other of the two X-ray tracing lines is different from that of the liquid absorption pad soaked with blood after the operation. According to the non-woven fabric surgical pad, the non-woven fabric surgical pad sterilization bag and the application thereof provided by the embodiment of the invention, the visibility of the visual counting before and after the operation is increased by utilizing the two X-ray tracing lines with different colors, the risk of leaving the surgical pad in the body of a patient in the operation process is greatly reduced, and the safety and the use performance of the non-woven fabric surgical pad are superior to those of the traditional surgical pad made of gauze or other fabrics.

Description

Non-woven fabric surgical pad, non-woven fabric surgical pad sterilization bag and application thereof

Technical Field

The invention relates to the technical field of medical dressings, in particular to a non-woven fabric surgical pad, a non-woven fabric surgical pad sterilization bag and application thereof.

Background

The surgical pad with X-ray tracing lines is used to absorb blood and exudates from a surgical site on a patient's body during surgery. Currently, most conventional surgical pads include an absorbent pad made of gauze and X-ray tracing lines attached to the surface thereof, which are generally made of PVC rubber, containing barium sulfate powder in an amount of about 60% by weight. The barium sulfate is included in the PVC rubber to increase its radiopacity so that the X-ray tracing material can be detected during X-ray radiation examination.

After surgery, the surgical mat should be removed entirely from the patient and not left in the body. The operation pad with the X-ray tracing lines is provided with two X-ray tracing lines, each X-ray is in one color, and the colors of the two X-rays are different from each other. The color of one X-ray tracing line is obviously dark before the operation relative to the color of the liquid absorption pad, so that the counting and counting of the non-woven fabric operation pads before the operation are more convenient and accurate. Wherein the colour of another X-ray pursuit line is lighter for the imbibition pad colour that is soaked with blood much after the operation, so, has improved the surgical pad that is soaked with blood and has distinguished the degree in that patient is internal to help whole surgical pad of taking out, improved surgical pad's security, and make the count statistics of taking out the back to the operation of multi-disc non-woven fabrics surgical pad carrying on the postoperative more convenient and accurate.

For smaller site surgery with less exuding fluid volume, a smaller surgical pad is used, commonly referred to as a dressing sheet with X-ray tracing lines. Common "fold over form" dimensions are (3.5x3.5 inches), (4x4 inches), and (8x4 inches). For larger, deeper sites of surgery with large amounts of exuding fluids, larger sized surgical dressing pads, known as abdominal pads or surgical drapes, are commonly used. Common "deployment sizes" are (18x18 inches), (15x15 inches), and (12x12 inches). To assist in positioning the pad at the surgical site and pulling it out after surgery, larger size pads typically have a retrieval handle attached to the side of the pad. The retrieval handle is typically made of cotton or synthetic material.

Surgical pads with X-ray tracing are typically packaged in sealed bags or trays prior to use in surgery and then sterilized by common sterilization methods such as ethylene oxide (ETO), gamma radiation, e-beam radiation or steam. The number of surgical pads in a sterile package ranges from 2 to 10, but it is generally convenient to count 5 or 10 pads per package. Depending on the complexity and location of the procedure, one or more sterile surgical pads with X-ray tracing lines may be required.

It should be noted that the surgical pad was invented at the end of the 80's 20 th century. Since then, conventional surgical pads have not undergone significant changes and improvements in design and overall performance despite the following drawbacks:

(1) excessive lint, loose particles and yarn ends on the gauze pad may cause infection at the surgical site.

(2) The water absorbency of the gauze pad is relatively low.

(3) The X-ray trace lines broke or fell off the gauze pad surface.

(4) The X-ray tracking sheet for large size gauze pads is small in size.

(5) In particular, when used for a large size gauze pad, the X-ray tracing property of a thin X-ray tracing line is poor.

(6) Dark X-ray tracing material has poor visibility on a gauze pad saturated with blood after surgery.

(7) The surgical pad remains in the patient after surgery.

For procedures requiring multiple packages of sterile surgical pads, more than 50 pieces of surgical pads may be used. A major safety issue with surgical absorbent pads is that they may be left in the patient during surgery. Using a sterile package of five pieces of surgical pad wrapped in a bag as an example of a typical surgical counting procedure, the operating room staff will count the number of surgical pads in each sterile package to ensure that there are indeed five pieces of gauze pad in it. If multiple sterile packs are required for the procedure, all of the packs are opened and counted to ensure that each pack contains five gauze pads. The total number of pieces of surgical pad used for surgery will be equal (number x five pieces used). If the number of sheets in any sterilization pack is inconsistent, the defective sterilization pack will not be used and will be filed and complained to the supplier. After surgery, the used pads are collected in a dressing counter and counted to ensure the same number of pads before and after surgery. If the number is not equal, the patient will be X-raytraced to find a missing surgical pad in the patient.

According to the statistics of the united states, about 0.02% of surgical pads are accidentally left in a patient during a surgical procedure, which means that 4,000 cases of surgical pads are accidentally left annually. For developing countries, the statistics of the surgical pad left behind in the patient may be higher. Currently, there are two patented approaches that can reduce the likelihood of leaving the surgical pad inside the patient during surgery: (1) a small Radio Frequency (RF) chip is attached to the surgical pad and a scanner is used to detect the presence of the RF chip in the patient. (2) A two-dimensional code (embedded on a piece of plastic attachment) is adhered to each pad and scanned before and after surgery to ensure that all pads have been counted. Although the above two methods may provide some improvement in the safety of the absorbent pad, they still have some significant problems. First, the systems and devices of these patents are not completely safe because they still require attaching X-ray tracing material to each individual surgical pad. With respect to radio frequency RF chips and scanning systems, it is well known that RF devices can malfunction and occasionally cause erroneous signals, which can make scanners unreliable. For two-dimensional code systems, manual counting of all aseptically packaged absorbent pads is still required. In addition, adhering the single two-dimensional code to the surgical pad before surgery is very labor and time consuming; scanning each two-dimensional code after surgery is also labor and time intensive. In addition to the above problems, both of the above security systems require additional equipment and monitoring systems, which are very expensive. The use of these systems requires another person who is specifically responsible for performing the task. Furthermore, both safety systems only signal the absence of surgical pads, but do not help locate the remaining absorbent pad within the patient.

In addition to the general disadvantages of X-ray tracing materials currently on the market, another major problem since world war ii has been that gauze materials that have been used to make surgical pads have some disadvantages. The safety and performance disadvantages of gauze in general are: (1) too much villus results in surgical site infection; (2) the edges of the gauze have no selvage, resulting in yarn ends and loose particles; (3) the multi-layer gauze pad cannot be opened for use; (4) gauze pads can stick to wounds, (5) water absorption is relatively low compared with other materials, and (6) labor intensity is high due to difficulty in production automation. At the end of the 80 s, the Qiangsheng company has attempted to replace the scrim with a soft and low-strength spunlace nonwoven made from a viscose/polyester blend material in a weight ratio of 70/30. Nonwoven fabrics are less expensive than woven fabrics due to simple processes and high degree of automation, and have been used to manufacture a wide variety of disposable products. However, due to the stringent requirements placed on surgical absorbent pads, which are low in tensile strength and too soft to be suitable for surgical use, the strong types of nonwoven materials are currently used only for the manufacture of general-purpose types of medical dressings with low performance requirements.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a non-woven fabric surgical pad, a non-woven fabric surgical pad sterilization bag and application thereof.

To achieve the above objects, in one aspect, a non-woven fabric surgical mat according to an embodiment of the present invention includes:

the liquid absorption pad is made of spunlace non-woven fabric with preset tensile strength, and the preset tensile strength meets the strength requirement of the surgical dressing;

the two X-ray tracing lines are connected to the surface of the liquid absorption pad through an ultrasonic welding process;

one of the two X-ray tracing lines has a different color before surgery relative to the absorbent pad, and the other of the two X-ray tracing lines has a different color after surgery relative to the absorbent pad soaked with blood.

In addition, the non-woven fabric surgical mat according to the above embodiment of the present invention may have the following additional technical features:

according to an embodiment of the present invention, the color combination of the two X-ray tracing lines is any one of deep blue and light blue, deep green and light green, deep blue and light green, and deep green and light blue.

According to one embodiment of the present invention, the liquid absorption pad is made of viscose fiber, bamboo fiber or cotton fiber, or the liquid absorption pad is made of a mixture of first fiber and second fiber, wherein the first fiber is one of viscose fiber, bamboo fiber or cotton fiber, and the second fiber is polyester fiber.

According to one embodiment of the invention, the absorbent pad is made by a cross-lapping hydroentangling process.

According to an embodiment of the present invention, the two X-ray tracing lines are disposed on the same surface of the liquid absorption pad.

According to one embodiment of the present invention, two X-ray tracing lines are disposed on different surfaces of the absorbent pad.

According to one embodiment of the present invention, the spunlace nonwoven fabric has a weight ranging from 40 g/m to 120 g/m and a tensile strength in both the machine direction and the cross direction of no less than 15 newtons, which is measured by cutting a test sample of 5 cm x 10cm from the fabric and testing with a tensile tester at a crosshead speed of 20 cm per minute.

According to one embodiment of the present invention, the X-ray tracing lines are rubber lines having a width ranging from 0.1 mm to 2mm and a thickness ranging from 0.01 mm to 1 mm.

According to one embodiment of the invention, the X-ray tracing lines are in the shape of straight lines or wavy lines.

According to one embodiment of the invention, the X-ray tracing lines are made of polyvinyl chloride or thermoplastic elastomer rubber containing barium sulfate.

According to one embodiment of the invention, the absorbent pad has a spread size range of: the width ranges from 5 cm to 200cm, the length ranges from 5 cm to 200cm, and the number of folding layers ranges from 1 to 16.

According to one embodiment of the present invention, the non-woven surgical pad further comprises a retrieval handle attached to the surface of the absorbent pad by an ultrasonic welding process, wherein the retrieval handle is made of polypropylene or polyester.

In another aspect, a non-woven surgical mat sterilization wrap in accordance with an embodiment of the present invention includes:

packaging, namely aseptic sealed packaging;

at least one piece of the non-woven fabric operation pad is sterilized and sealed in the outer package.

In a further aspect, the present invention provides a use of a non-woven surgical mat as above in a surgical or wound care procedure.

According to the non-woven fabric surgical pad, the non-woven fabric surgical pad sterilization bag and the application thereof, the visibility of visual counting before and after an operation is improved by utilizing two X-ray tracking lines with different colors, and the X-ray radiation impermeability when a patient body is probed is greatly improved. In addition, the liquid absorbing pad is made of spunlace non-woven fabric and has the characteristics of less fluff, high liquid absorptivity and high tensile strength. In short, the non-woven surgical pad of the present invention has safety and usability superior to those of conventional surgical pads made of gauze or other fabrics.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a non-woven surgical mat (two X-ray tracing lines are on the same surface) according to an embodiment of the present invention;

FIG. 2 is a schematic view of a non-woven surgical mat (two X-ray tracing lines on different surfaces) according to an embodiment of the present invention;

FIG. 3 is a schematic view of a non-woven surgical mat (with a retrieval handle) according to an embodiment of the present invention;

FIG. 4 is a schematic view of the non-woven surgical pad sterilization wrap according to an embodiment of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of protection of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The non-woven fabric surgical mat, the non-woven fabric surgical mat sterilization pack, and the use thereof according to the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention has been completed based on the following studies and findings of the inventors:

in view of the shortcomings of conventional surgical pads of the related art, there is a strong need for a revolutionary surgical pad with X-ray tracing lines that has greatly improved overall physical performance and enhanced safety without any significant increase in cost and complexity of use due to the addition of any new accessories and accessories. It is therefore an object of the present invention to provide an operating pad and X-ray tracing material having superior properties, higher visibility in visual counting, and enhanced radiopacity in X-ray exploration.

Currently, almost all surgical absorbent pads on the market are made of cotton gauze. However, the gauze pad has a number of disadvantages as will be listed below: (1) the water absorption of the gauze is low: the water absorbency of the scrim is about 4 grams of water per gram of scrim material. In contrast, spunlace nonwoven made of viscose has an absorption capacity of about 8 grams of water per gram of nonwoven material. (2) The capillary action of the gauze has slow water absorption speed: the wicking speed of the gauze is significantly slower than that of a viscose nonwoven. (3) Large amount of fluff, yarn ends and loose particles: since the gauze has no selvage, the fluff, ends of the yarn and loose particles easily fall off the edges when the gauze is opened. There are many published studies in medical journals that show that fluff, yarn ends and loose particles may cause surgical site infections and may also cause embolisms and vessel blockages during surgery. In fact, many developing countries require that surgical dressings made of gauze be washed and dried prior to use to remove fluff, ends of yarn and loose particles. However, the cleaning and drying operation of surgical mats is not followed in most less developed countries due to the relatively high cost of the cleaning and drying operation. (4) The price of the gauze is high: the inherent difficulties of automation cannot be overcome because of the manual operations required by a large number of people, and the manufacturing characteristics of gauze and the subsequent manufacture of gauze pads make the production of surgical pads not completely automated.

In the 80 s of the twentieth century, to solve the above problems, the Johnson & Johnson (J & J) introduced a spunlace nonwoven absorbent pad made of a mixed material of viscose and polyester fibers (70%/30%), which is softer but lower in tensile strength than gauze. Compared with gauze, the strong non-woven fabric has the following advantages: (1) the water absorption of the non-woven fabric is higher and is about 2 times of that of the gauze; (2) due to the capillary action of its fibers, the nonwoven wicks faster (3) much less fluff, ends of yarn, and loose particles because the edges of the nonwoven do not spread out like a gauze. (4) The manufacturing process from fiber to finished product is more automated than the product made from gauze. However, as described above, the nonwoven fabric of the hadamard type is currently used only for manufacturing general medical dressings which have low requirements for performance, and is not suitable for manufacturing surgical pads required for surgery.

Through extensive research, the inventors found that the main reasons that prevent the use of widely used nonwoven fabrics for manufacturing surgical pads with X-ray tracing lines are as follows:

(1) weak fabric of low tensile strength: in order to make the nonwoven softer than the scrim, the strong nonwoven has a relatively low tensile strength, especially in the cross direction of the fabric. Such low tensile strength nonwovens are prone to breakage during surgery and are therefore unsuitable for surgical use, most of which require absorbent pads having a certain strength.

(2) Smooth surface: for many surgical and wound debridement procedures, the absorbent pad requires a rough surface. The strong nonwoven fabric has a rough surface, but the roughness is far less than that of the gauze.

(3) Thin cloth: the strong nonwovens have a web weight of about 30 to 40 grams per square meter and are relatively thin compared to a lofty, open mesh scrim.

(4) Can not be unfolded for use. Thin and weak nonwovens cannot be opened for use during surgery because the low tensile strength nonwovens tear.

To remedy the above-mentioned shortcomings of conventional hadamard-type nonwovens, the inventors have developed the following methods and requirements to produce a new nonwoven mat with physical properties compatible with surgical applications:

(1) higher tensile strength in both directions of the fabric: the strong type of soft nonwoven fabric is made by a parallel-laid spunlace process in which the fibrous layers are aligned in the longitudinal direction of the production line, resulting in low strength in the cross direction. In order to achieve a higher tensile strength, the nonwoven fabric used for the production of the surgical mat should be produced by a cross-lapping process, in which nonwoven fiber layers are laid on a production line at 45 ° or perpendicular to each other, which is called half cross lapping and cross lapping.

(2) Macro-mesh or textured surfaces: the use of a pattern with large mesh or embossment in the final stage of the hydroentangling process to create a large mesh or embossment effect surface on the hydroentangled nonwoven makes the nonwoven surface much rougher than the conventional strong nonwoven surface.

(3) Thicker and larger non-woven fabrics with higher tensile strength are used for manufacturing larger-sized operation pads. For surgical pads used for larger surgical sites, the inventors have made some surgical pads that are larger and thicker and have high tensile strength.

(4) Can be unfolded for use: because the cloth is thicker and stronger, the operation pad can be unfolded for use without worrying about the tearing of the non-woven fabric.

It is another object of the present invention to enhance the safety of X-ray tracing on a surgical pad. Currently, there are generally three X-ray tracing materials used for gauze surgical pads:

(1) rubber threads made of PVC (polyvinyl chloride) or TPE (thermoplastic elastomer) rubber (for small-sized pads) are attached to the surface of the gauze by means of heat-pressing rollers or by weaving. This style is the most common style for surgical pads of all sizes.

(2) A rubber sheet (wider and thicker than the thread) made of PVC or TPE rubber, which is attached to the gauze by hand sewing. This version is mainly used for larger size surgical pads due to its higher material cost.

(3) The sewing thread made of synthetic filament is sewn into the gauze during the manufacturing process of the gauze. Note that this pattern is rarely used because the sewing thread is much thinner, resulting in poor visibility and X-ray traceability of the tracking thread.

All of the above versions of X-ray tracing materials contain about 60% by weight barium sulfate to increase radiopacity and are detectable upon X-ray tracing investigation. Of these three patterns, the rubber thread pattern is the most common because of its low material cost and the low cost of attaching the thread to the gauze. Typically, a rubber thread is placed on the surface of a mesh scrim, and a high temperature roller is placed over the rubber thread, sandwiching the rubber thread like a sandwich, and the high temperature causes the rubber thread to soften, become tacky and adhere to the scrim, thereby attaching the thread to the surface of the mesh scrim. The temperature was set at about 200c and the X-ray trace was heated instantaneously to soften and stick to the gauze. After the X-ray tracing lines were adhered to the gauze, the gauze was folded into different sizes and layers by an automatic machine. For small-sized pieces of surgical gauze (4X4 inches), they typically have only one X-ray trace on each piece. For larger size surgical gauze pads (8X4 inches), there are typically two X-ray tracking lines on each pad. The additional purpose of adding X-ray tracing lines is to improve the visibility of the gauze pad during counting and to enhance the opacity of the gauze when probed with X-ray radiation inside the patient. Typically, the dual X-ray tracing lines on the gauze surgical pad are of the same color and are typically placed side-by-side.

For nonwoven surgical absorbent pads currently available on the market, they are also manufactured using a high temperature roll process to attach the rubber thread of the X-ray tracing thread to the nonwoven. However, even for a short duration of time, the viscose spunlace nonwoven is degraded and burned by being subjected to a temperature of 160 ℃ or more, and thus there are some serious problems in using this method on the viscose nonwoven. On the other hand, the temperature of the heat and pressure roller needs to be set to about 180 to 200 ℃ to soften the rubber thread so that it can adhere to the surface of the nonwoven fabric. As a result, it is difficult to achieve consistent adhesion of X-ray tracing lines on a nonwoven pad. Therefore, the quality of nonwoven surgical mats with X-ray tracing is a common concern for most end users, which is why their use is very limited. Since most spunlaced nonwovens are thermally damaged by exposure to high temperatures, even if preferred for larger size surgical pads, it is not feasible to use high temperature rollers to bond two X-ray tracing lines to the nonwoven surgical pad.

Since X-ray tracing rubber wires are the most commonly used, the inventors have focused their research efforts on improving their manufacturability and endeavoring to overcome the quality problems described above. After many laboratory studies, the inventors have found that ultrasonic welding is more suitable than attaching X-ray tracing rubber threads to nonwoven fabrics using conventional high temperature rollers. Generally, the ultrasonic welding method is a safe and clean joining method without generating any odor or chemical substances. The PVC and TPE rubber threads and the viscose non-woven fabrics used for manufacturing the surgical pad with the X-ray tracing lines by the inventor are compatible with the ultrasonic welding process. The ultrasonic welding method does not generate excessive heat and damage the non-woven fabric material and the rubber threads. Further, when the ultrasonic welding method is combined to the nonwoven fabric, it is not necessary to apply high pressure to the rubber thread. Therefore, when the ultrasonic welding method is used, the problems of the breakage of the rubber thread and the flattening of the surface texture of the nonwoven fabric can be avoided. Furthermore, it can be used to attach a plurality of rubber threads to different locations of a nonwoven in an automated production line.

Referring to fig. 1 to 3, a non-woven fabric surgical pad according to an embodiment of the present invention includes aliquid absorption pad 10 and twoX-ray tracing lines 20a and 20b with different colors.

In which theabsorbent pad 10 is made of a spunlace nonwoven fabric having a predetermined tensile strength that satisfies the strength requirements of the surgical dressing, the spunlace nonwoven fabric from which theabsorbent pad 10 is made has a higher tensile strength in the Machine Direction (MD) and the Cross Direction (CD) than conventional nonwoven fabrics.

The twoX-ray tracing lines 20a, 20b are attached to the surface of theliquid absorption pad 10 by an ultrasonic welding process. One of the twoX-ray tracing lines 20a is different in color from theabsorbent pad 10 before the operation, and the other of the twoX-ray tracing lines 20b is different in color from theabsorbent pad 10 soaked with blood after the operation. For example: the color of oneX-ray tracing line 20a is much darker than that of theabsorbent pad 10 before operation, which is convenient for counting and counting a plurality of non-woven fabric operation pads before operation. The color of the otherX-ray tracing line 20b is much lighter after the operation than that of theabsorbent pad 10 soaked with blood, which is convenient for counting and counting a plurality of non-woven fabric operation pads after the operation.

In this application, adopt theX-ray pursuit line 20a of different colours, 20b, can make the non-woven fabrics operation pad of this application detect more easily at to a great extent and obtain. In addition, the color of oneX-ray tracing line 20a is obviously different from that of theabsorbent pad 10 before operation, and the color of the otherX-ray tracing line 20b is obviously different from that of theabsorbent pad 10 soaked with blood after operation, so that the non-woven fabric surgical pad can be counted more easily before and after operation to a great extent. And set up twoX-ray tracing lines 20a, 20b in different positions (different positions or different surfaces of the same surface) on the non-woven fabrics operation pad, from the traditional operation pad that has only one X-ray tracing line 20 of great extent to have strengthened X-ray traceability, greatly reduced the risk of leaving the operation pad in patient in the operation process, improved the security of operation.

According to the non-woven fabric surgical pad provided by the embodiment of the invention, the visibility of visual counting before and after operation is improved by utilizing the twoX-ray tracking lines 20a and 20b with different colors, and the X-ray radiation impermeability during the exploration of the body of a patient is greatly improved. In addition, theabsorbent pad 10 is made of spunlace nonwoven fabric and has the characteristics of less fluff, high liquid absorbency and high tensile strength. In short, the non-woven surgical pad of the present invention has safety and usability superior to those of conventional surgical pads made of gauze or other fabrics.

Preferably, the color combination of the twoX-ray tracing lines 20a and 20b is any one of dark blue and light blue, dark green and light green, dark blue and light green, dark green and light blue, and the dark and light combination of the above colors can achieve better effect of fast and accurate counting before and after operation.

In some embodiments of the present invention, theabsorbent pad 10 is made of viscose, bamboo or cotton fibers, i.e., theabsorbent pad 10 is made of 100% viscose, bamboo or cotton fibers.

In addition, theabsorbent pad 10 can be made by blending first fibers, which are one of viscose, bamboo or cotton fibers, with second fibers, which are polyester fibers, preferably in a weight ratio of 20 to 40%, more preferably in a weight ratio of 30%.

Theabsorbent pad 10 made of the fibers has a tensile strength at least equal to that of gauze, a higher water absorption rate than gauze, and less fluff, and is suitable for surgical use.

In some embodiments of the present invention, theabsorbent pad 10 is made using a cross-laid hydroentangling process.

As described above, the nonwoven fabric manufactured by the parallel-laid spunlace process, in which the fiber layers are arranged in the longitudinal direction of the production line, results in low strength in the cross direction. In order to obtain higher tensile strength, in this embodiment, the spunlace nonwoven fabric used for manufacturing the surgical pad is made by a cross-lapping process, and the nonwoven fiber layers thereof are lapped on a production line at 45 ° or in a manner perpendicular to each other, which is called half cross lapping and cross lapping, so that the manufacturedabsorbent pad 10 can have higher tensile strength in both longitudinal and transverse directions, which enables it to meet the tensile strength requirement of the surgical dressing, in other words, the spunlace nonwoven fabric is made by a cross-lapping process, which enables the tensile strength of the nonwoven fabric to meet the surgical requirement, so that the nonwoven fabric can be applied to the surgical pad.

It is understood that the twoX-ray tracing lines 20a, 20b may be disposed on the same surface of theabsorbent pad 10, or the twoX-ray tracing lines 20a, 20b may be disposed on different surfaces of theabsorbent pad 10, for example, oneX-ray tracing line 20a is disposed on the front surface of theabsorbent pad 10, and the otherX-ray tracing line 20b is disposed on the back surface of theabsorbent pad 10.

In one embodiment of the invention, the hydroentangled nonwoven has a weight in the range of 40 grams per square meter to 120 grams per square meter and a tensile strength in both the machine direction and the cross direction of no less than 15 newtons, as measured by cutting a test specimen of 5 cm x 10cm from the web and testing with a tensile tester at a crosshead speed of 20 cm per minute.

The spunlace nonwoven fabric adopting the parameters has the advantages that the tensile strength in the longitudinal direction and the transverse direction can meet the requirements of surgical dressings, and the spunlace nonwoven fabric has higher water absorption compared with gauze.

Preferably, theX-ray tracing lines 20a, 20b are rubber lines having a width in the range of 0.1 mm to 2mm and a thickness in the range of 0.01 mm to 1 mm. TheX-ray tracing lines 20a, 20b may be in the shape of straight lines or wavy lines. TheX-ray tracing lines 20a, 20b are made of polyvinyl chloride (PVC) or thermoplastic elastomer (TPE) rubber containing barium sulfate, for example, the weight ratio of barium sulfate in theX-ray tracing lines 20a, 20b is about 60%.

The inventors have found thatX-ray tracing wires 20a, 20b using PVC and TPE rubber wires and viscose non-woven fabrics are compatible with the ultrasonic welding process. The ultrasonic welding method does not generate excessive heat and damage the non-woven fabric material and the rubber threads. Further, when the ultrasonic welding method is combined to the nonwoven fabric, it is not necessary to apply high pressure to the rubber threads, and therefore, when the ultrasonic welding method is used, the problems of breakage of the rubber threads and flattening of the surface texture of the nonwoven fabric can be avoided. Furthermore, the rubber thread connecting device can be used for connecting a plurality of rubber threads to different positions of non-woven fabrics in an automatic production line, so that batch processing is realized, and the production efficiency is high.

Preferably, theabsorbent pad 10 has an expanded size range of: the width range is 5 cm to 200cm, the length range is 5 cm to 200cm, the number of folding layers is 1 to 16, and the size range can meet various application requirements in operation and nursing.

In some embodiments of the present invention, the non-woven surgical mat further comprises aretrieval handle 30, the retrieval handle 30 being attached to the surface of theabsorbent pad 10 by an ultrasonic welding process, wherein theretrieval handle 30 is made of polypropylene or polyester, thereby facilitating the removal of the non-woven surgical mat from the body after surgery using theretrieval handle 30.

Referring to fig. 4, the non-woven surgical pad sterilization package according to the embodiment of the present invention includes anouter package 200 and at least one non-wovensurgical pad 100 as described in the above embodiments, theouter package 200 is a sterile sealed package, which may be a bag or a tray, and at least one non-wovensurgical pad 100 is sealed in the outer package in a sterile manner.

The invention provides an application of the non-woven fabric surgical pad in a surgical operation or wound care process.

Various examples of the spunlace nonwoven fabric and its fibers, and theX-ray tracing lines 20a, 20b used in the present invention for producing the nonwoven surgical pad will be described below, and they will be compared with the properties of the equivalent gauze, nonwoven fabric, andX-ray tracing lines 20a, 20b in combination with the examples.

Example 1

The present embodiment employs different fiber spunlace nonwoven fabrics to make various sample groups, wherein tensile strength, water absorption, and fluff levels of the surgical pad made of gauze, hadron nonwoven fabric, and the spunlace nonwoven fabric of the present application are compared.

The samples and test results of this study are shown in table 1. The results show that the tensile strength of the hydroentangled nonwoven in the present application is approximately the same as the tensile strength of the scrim, especially for thicker nonwovens with higher grammage (grams per square meter). The water absorption of the hydroentangled nonwoven fabric of the present application is much higher and the degree of fuzz is much lower compared to a scrim. Furthermore, all of the hydroentangled nonwoven samples of the present application had higher tensile strength than the strong nonwoven samples. Thus, the hydroentangled nonwoven fabric of the present application should be suitable for surgical use.

Table 1 comparison of the properties of spunlace nonwoven fabrics and scrims and nonwoven fabrics of the strong type used in the present application

Example 2

In this embodiment, a non-woven fabric surgical pad sample was prepared using viscose fiber, bamboo fiber, cotton fiber, polyester fiber and cotton fabric, wherein the tensile strength, water absorption and fluff level of the surgical pad prepared by each spunlace non-woven fabric of the present application were compared.

The samples and test results of this study are shown in table 2. The results show the physical properties of the spunlace nonwoven fabric of the present application made of viscose, bamboo, cotton and viscose respectively polyester and cotton blends. All of their physical properties are applicable to surgery.

Table 2 comparison of performance of spunlace nonwoven fabric of the present application made of viscose, bamboo, cotton and viscose with polyester and cotton blends, respectively

Example 3

This example used an ultrasonic welding process to make various sample sets in which the visibility and X-ray traceability of surgical pads made of gauze, nonwoven fleece and spunlace nonwoven fabrics of the present application were compared. The following different projects were studied:

(a) the X-ray tracing line is used for the surgical pad made of three materials, namely non-woven fabric, gauze and Qiangsheng non-woven fabric.

(b) One and two X-ray trace lines.

(c) TwoX-ray tracing lines 20a, 20b of the same color and different colors are used for the sample.

The samples and test results of this study are shown in table 3. The results show that the pads with twoX-ray tracing lines 20a, 20b of different colors have the highest overall score, followed by the pads with twoX-ray tracing lines 20a, 20b of the same color, followed by the remaining categories of pads, with equally lower scores.

Table 3X-ray trace performance comparison for gauze, hadron nonwoven and spunlace nonwoven of the present application

Remarking: each of the X-ray tracing lines 20 described in the above table is a solid color.

To sum up, the non-woven fabric surgical pad of this application includes: (a) anabsorbent pad 10 made of a layer of spunlaced nonwoven fabric having physical properties suitable for surgical use, and (b) twoX-ray tracing threads 20a, 20b in the form of rubber threads attached to theabsorbent pad 10. Preferably, eachX-ray tracing line 20a, 20b on theabsorbent pad 10 is pure color, the colors of differentX-ray tracing lines 20a, 20b are different from each other, and the color of oneX-ray tracing line 20a is much darker than the color of the surgical pad before surgery; the otherX-ray tracing line 20b is much lighter in color than the surgical pad soaked with blood after surgery. Compared with the traditional operation pad with only one X-ray tracing line, the multi-color X-ray of the invention can make the operation pad of the invention more easily detected to a great extent and make the operation pad more easily counted before and after the operation to a great extent. Having twoX-ray tracing lines 20a, 20b at different locations of the surgical pad also greatly enhances the X-ray traceability of the surgical pad over conventional surgical pads having only one X-ray tracing line. The highly secure attachment of the rubber threads to the nonwoven is achieved by using a special ultrasonic welding process, instead of the high-temperature roll process that is usually used for gauzes but not for nonwovens. The soft and strong non-woven fabricliquid absorption pad 10 is made of 100% of viscose fiber, bamboo fiber or cotton fiber, or is made of the three fibers mixed with 30% of polyester or cotton fiber; theX-ray tracing 20a, 20b is made of PVC or TPE rubber with about 60% barium sulfate by weight. The nonwoven fabric used to manufacture theabsorbent pad 10 has a fabric weight ranging from 40 grams per square meter to 120 grams per square meter. Wherein the nonwoven fabric has a tensile strength of not less than 15 newtons in both the machine direction and the transverse direction, and a 5x 10cm sample cut from the nonwoven fabric is tested by a tensile tester at a crosshead speed of about 20 cm per minute. Further, the rubberX-ray tracing lines 20a, 20b may be placed on the same side or opposite sides of the nonwoven fabric, and their colors may be the same or significantly different from each other. Furthermore, these lines are characterized by having a straight or wavy line form. Wherein, the width of theX-ray tracing lines 20a, 20b ranges from 0.1 to 2mm, and the thickness ranges from 0.01 to 1 mm. The unfolding size of theliquid absorption pad 10 is characterized in that the width range is 5-200 cm, the length range is 5-200 cm, and the range of the number of folded layers is 1-16. If desired, the retrieval handle 30 may be attached to the surface of theabsorbent pad 10 by ultrasonic welding, wherein the retrieval handle 30 may be made of polypropylene or polyester. One or more nonwovenabsorbent pads 10 are sealed in a sealed bag or tray for sterilization, applications related to surgery or wound care.

It should be noted that all past patented inventions for improving the safety of surgical pads have focused on using expensive accessories as well as external electronics and computers to count surgical pads before and after surgery, while a complete neglect of improving surgical pads should be directed to improving the actual product itself. Instead, the present application focuses on improving the key parts of the actual product, namely theabsorbent pad 10 and theX-ray tracing lines 20a, 20 b. It should be noted that the non-woven surgical mat withX-ray tracing lines 20a, 20b of the present application does not increase the cost because expensive accessories or accessories are not required. Moreover, the material cost is lower, and the manufacturing process is more automatic, so compared with the traditional gauze surgical pad, the non-woven fabric surgical pad with theX-ray tracking lines 20a and 20b not only improves the safety and the overall performance, but also can save a large amount of cost for the operation.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (14)

1. A non-woven fabric surgical mat, comprising:

the liquid absorption pad is made of spunlace non-woven fabric with preset tensile strength, and the preset tensile strength meets the strength requirement of the surgical dressing;

the two X-ray tracing lines are connected to the surface of the liquid absorption pad through an ultrasonic welding process;

one of the two X-ray tracing lines has a different color before surgery relative to the absorbent pad, and the other of the two X-ray tracing lines has a different color after surgery relative to the absorbent pad soaked with blood.

2. The non-woven fabric surgical mat according to claim 1, wherein the two X-ray tracing lines have a color combination of any one of dark blue and light blue, dark green and light green, dark blue and light green, and dark green and light blue.

3. The non-woven fabric surgical pad according to claim 1, wherein the liquid absorbing pad is made of viscose fiber, bamboo fiber or cotton fiber, or the liquid absorbing pad is made of a mixture of first fiber and second fiber, the first fiber is one of viscose fiber, bamboo fiber or cotton fiber, and the second fiber is polyester fiber.

4. The non-woven fabric surgical pad of claim 1, wherein the absorbent pad is formed by a cross-lapping hydroentangling process.

5. The non-woven fabric surgical mat according to claim 1, wherein the two X-ray tracing lines are provided on the same surface of the absorbent pad.

6. The non-woven fabric surgical mat according to claim 1, wherein the two X-ray tracing lines are provided on different surfaces of the absorbent mat.

7. The nonwoven surgical mat of claim 1, wherein the hydroentangled nonwoven has a weight ranging from 40 grams per square meter to 120 grams per square meter and a tensile strength in both the longitudinal and transverse directions of no less than 15 newtons as measured by cutting a 5 cm x 10cm test specimen from the fabric and testing with a tensile tester at a crosshead speed of 20 cm per minute.

8. The non-woven fabric surgical mat according to claim 1, wherein the X-ray tracing lines are rubber lines having a width ranging from 0.1 mm to 2mm and a thickness ranging from 0.01 mm to 1 mm.

9. The non-woven fabric surgical mat according to claim 1, wherein the X-ray tracing lines are in the shape of straight lines or wavy lines.

10. The non-woven fabric surgical mat according to claim 1, wherein the X-ray tracing lines are made of polyvinyl chloride containing barium sulfate or thermoplastic elastomer rubber.

11. The non-woven fabric surgical mat according to claim 1, wherein the absorbent pad has a spread size range of: the width ranges from 5 cm to 200cm, the length ranges from 5 cm to 200cm, and the number of folding layers ranges from 1 to 16.

12. The nonwoven fabric surgical mat of claim 1, further comprising a retrieval handle attached to the surface of the absorbent mat by an ultrasonic welding process, wherein the retrieval handle is made of polypropylene or polyester.

13. A non-woven fabric surgical pad sterilization wrap, comprising:

packaging, namely aseptic sealed packaging;

at least one nonwoven fabric surgical mat according to any one of claims 1 to 12, at least one of said nonwoven fabric surgical mats being sterile sealed within said outer wrap.

14. Use of a non-woven surgical mat as claimed in claims 1 to 13 in surgical operations or wound care procedures.

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