FI58869B - SURGICAL TAMPONG AND FOER FARAND FRAMSTAELLNING AV DYLIK - Google Patents

Description

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JBf l J 1 'UTLÄGGNI NOSSKRIFT 5 OO 0 9 (^ ia tent r .. e .Iidat (51) Kv.ik.Vc.3 A 61 F 13/00, 13/20 FINLAND —FI N LAND (21) F * t *, ttlhei '* mu * - PM «nt * wekninX klk / 12 (22) Htkamltpllvl - AnaMtnlngtdtf l6.02.72 (FI) (23) Alkuptlvt - GHti (h« t * d ·! L6.02.T2 (41) Became stuck - Blivlt offtntllg l8.08.72 PBtBntti- j * register request · Nu.tivtk.ip *** ,,. Month **, date -

Patent- och registerstyrelsen '' Amain »utiigd och uti..krtft« n pubitcarad 30.01.81 (32) (33) (31) Pyydetty utuo ^ ktu. —B «| trd priorities 17-02.71 USA (US) II6187 Proven-Styrkt (71) Codman & Shurtleff, Inc., Randolph, Massachusetts, USA (72) Harry Reimels, Braintree, Massachusetts, USA (US) ( This invention relates to surgical tampons, and more particularly to surgical tampons suitable for use in laminectomies, skull surgeries, her-mocha surgeries. and other difficult surgical procedures.5 In surgical procedures of the type described above, it has been the practice to use a relatively small thin strip without weaving the interconnected fibers as a tampon.This type of miniature tampon is necessary due to the small field of action and the sensitive nature of the method.

However, due to this size, it is necessary to attach an o-part, such as a take-back wire, to these tampons so that such tampons are in no case left in the wound and to provide a "handle" for fitting and removing these tampons at the wound site.

Previous surgeon's tampons of the 15 lama type used take-up sutures sewn directly to one or both surfaces of this tampon, and often, if desired, a 2,5869 l strip of opaque material was combined with this suture and simultaneously sutured to this tampon. When the tampons were made in this way, they were rough on both sides because this stitch ran entirely through this tampon. Likewise, the combination of this back-S sinusoidal wire and the opaque material was not safe because there was a risk of accidental detachment of the second part, resulting in the release of the second part, with no detecting part in this tampon, and it would have. in.

In addition, the sewing operation used to make these tampons had to be done by hand, resulting in an unnecessarily high manufacturing cost.

The disadvantages of previous surgical tampons can be avoided by the tuft of the present invention, which provides a unique tampon structure consisting of a strip without weaving interconnected fibers, where a plastic take-up yarn is attached to one surface of the tape through its flattened portion, which is thermally softened between the fibers.

The invention is characterized in that one or more strips of radiation-impermeable material are attached to the surface of the body at a different point or points than the wire.

The various parts of this tampon can be made simultaneously by placing this strip, the plastic take-back wire and the radiation-impermeable strip under the working end of the ultrasonic welding device and thus fitting this sound head in contact with the wire and the strips.

Thus, an improved surgical tampon can be prepared in a single treatment step, which has numerous advantages over all other known tempos.

The invention will now be described in more detail with reference to the accompanying drawings, in which: Figure 1 is a top view of a surgical tampon according to the present invention with parts cut away for clarity; Figure 2 is a cross-sectional view taken along line 2-2 in Figure 1; illustrating a method of making the surgical tampon shown in Figure 1, Figure 4 is a cross-sectional view taken along line 4-4 in Figure 3, Figure 5 is a top view of another embodiment of the surgical tampon with parts cut away for clarity.

Referring now to Figures 1 and 2, a preferred embodiment of a surgical tampon according to the present invention is generally described as part 10 and is made of a relatively thin strip of nonwoven fibers 11 which are firmly joined together to prevent fiber detachment, i.e., "fluffing". The strip 11 is most preferably made of rayon fibers carded in a manner known per se and then fed to the sheets by a needle machine, after which these sheets are cut into strips of the desired width and length. These rayon fibers are most preferably a matte, new, 3 denier rayon fiber with a nominal filament length of approximately 30 mm. This type of material has been prepared and used for surgical tempos in the past, and it has been found that when combined with a mixture of starch starch and polyvinyl alcohol, these strips retain their cohesiveness and have been found to absorb more than 25 times their weight in water 2b.

The take-back wire 12 is connected to the second surface of the strip 11 and includes a flattened portion 13 which is thermally softened so as to provide a secure connection between the wire 12 and the surface of the strip 11. As already indicated above, the surgical tampon 10 is intended primarily for use in very difficult surgical procedures. And the surgical area is significantly smaller in this type of surgery than is normally used in larger surgeries. For this purpose, relatively small o-35 swabs are used and, in addition, devices must be attached to these temples to recover them after they have been applied to the wound site and after they have absorbed a considerable amount of body fluids. The take-back wire 12 is installed for this purpose and the connection “58869 1 between this wire and the surface of the strip 11 is therefore very important. The length of this wire 12 is not critical as long as it can only be placed at a sufficient distance outside the wound so that it is easily detected and easily handled by the surgeon and his assistant.

the sweeping take-up yarn 12 is most preferably made of a continuous multifilament polyester fiber. However, it has been found that other plastic materials such as nylon and poly-10 propylene can be used to provide a good bond.

However, the polyester material provides the best possible combination of the properties of the final product, such as the strength of the joint and the softness of the yarn.

In addition to this take-up wire 12, a pair of strips 14 15 and 15 formed of a radiation-impermeable material are also firmly attached to the surface of the strip 11. Although two radiation-impermeable strips are illustrated in the preferred embodiment of the present invention, it may be understood that only one strip may be preferred in particularly small surgical tampons and two or more may be used in larger tampons. Although numerous opaque materials can be used in accordance with the present invention, it has been found that vinyl containing barium sulfate is particularly effective and forms a very secure bond to the surface of this strip 11.

The most preferred method of making a surgical tampon according to the present invention is described in detail below. Referring to Figure 3, there is schematically illustrated a method for thermally softening the take-off wire 12 and the radiation-impermeable strips 14 and 15. In order to avoid the use of additional substances, such as adhesives, and to avoid the harmful effects of heat in order to make the necessary connection between the take-up wire 12, the strips 14 and 15 and the surface of the strip 11, it has been decided to use an ultrasonic welding device. This apparatus is specifically described in U.S. Patent 3,440,117 and includes a radio cycle generator 20 for conducting AC voltage from conductor 21 at a cycle rate of about 20 kilo cycles from generator 20 to sound converter in unit 22. This sound head 22 is provided with a horn 23 for transmitting sound energy l.to the loops 12 and the strips 14 and 15. This sound head 22 is generally a device that converts electrical energy into mechanical vibrations and for this purpose includes one or more piezoelectric plates which vibrate under the influence of alternating voltage using electrical energy. These oscillations are amplified and appear as longitudinal oscillations from the tip of the horn 23.

In order to realize the simultaneous stacking of all parts of the surgical tampon 10, a strip 11 is placed on a support part 24 located directly below the ultrasonic welding head 23. The take-back wire 12 and the strips 14 and 15 are then placed on this strip 11 substantially as shown in Fig. 1. Referring now to Fig. 4, the lower part of the horn 23 is specially constructed so that a plurality of ribs 25 extend downwards therefrom. These ribs 25 are constructed to come into contact with only as much of the take-up yarn 12 and strips 14 and 15 as is necessary to adequately soften these materials so that they flow into the upper surface of the strip 11 and form a secure connection between the material and the surface-forming fibers. . As can be seen in Figure 2, the horn 23 acts on the upper surfaces of the wire 12 and the strips 14 and 15 by substantially flattening these materials and wrapping them inside the upper surface of the strip 11 so as to form a firm connection to this surface.

In certain cases, e.g. when it is desired to obtain a more flexible surgical tampon, it has been found advantageous to reduce the connection interface 30 between the strip 11 and the take-back wire 12. The most preferred tampon structure for accomplishing this is illustrated in Figure 5, where the tampon 10a includes a strip 11a to which a take-back wire 12a is attached to its surface. However, unlike the tampon of Fig. 1, this connection 35 takes place only along certain spaced apart portions B along the length of this partially flattened portion 13a in the wire 12a. Unconnected areas act as "hinges" and thus provide increased flexibility. ! i 6 58869 1 In order to provide this type of connection, the ribs 2S in the lower part of the horn 2 3 (compare figure U) may be longitudinally notched so that contact between the horn 23 and the take-off wire 12a 5 takes place only at predetermined distances, thus providing a connection only at such points. .

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Claims (10)

1. Surgical tampon (10, 10a) for use in precision operations and consisting of a substantially flat piece (11, 11a) of interconnected, nonwoven fibers, and a plastic material backing tree (12, 12a) which is bonded to only one surface of the piece (11, 11a), the connection being provided by only a flattened part (13) of the tree (12) or by a plurality of spaced flat parts (13a) of the trees (12a), where said part or parts being brought together with the fibers in the surface of the piece, characterized in that one or more strips of radiation-opaque material (14, 15) are connected to the surface of the piece (11, 11a) at a location or places which are separate from the trees (12, 12a). 2. A tampon according to claim 1, characterized in that the flattened part (13) of the thread (12) extends along the entire width of the piece (11). Tampon according to claim 1 or 2, characterized in that the trees (12) are welded to the surface of the piece (11) by means of ultrasound. 4. A tampon according to any one of claims 1 to 3, characterized in that the connection between the radiation-opaque material (14, 15) and the piece (11) is achieved only by a heat-softened part of the material. , which is partially brought into the surface. Tampon according to claim 4, characterized in that the radiation-opaque material (14, 15) is welded to the piece (11) by means of ultrasound. 6. A tampon according to any one of claims 1 to 5, characterized in that the nonwoven fibers are made of rayon, the retrieval trees (12) consist of a continuous polyester polyester fiber yarn (14). , 15) is vinyl resin containing barium sulphate. A method of producing a surgical tampon according to any one of claims 1 to 6, wherein a piece (11, 11a) of interconnected, nonwoven fibers is formed and a plastic material retrieval tree (12, 12a) is applied in contact with the surface of the piece (11) and flattened together or in o