JPS58163370A - Foam/bandage assembly dispensing apparatus used in making medical protective material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates generally to the formation of medical protectants, and more particularly to making urethane foam protectants, and in particular to the formation of urethane foam protectants. cellu
lar) 7” plastic bandage (dressing)
) relates to equipment for dispensing early-curing polyurethane during molding.

In the past, several different problems have hindered the use of monourethane foam as a medical protective material, despite the obvious advantages of its navigator composition for such purposes. One particularly troublesome problem has been the difficulty in physically applying the relatively brittle, uncured foam to the injured limb to be immobilized. Naturally, spraying foam directly onto the limbs is difficult to contain.
and injection of the pre-hardening foam into the tubular sleeve resulted in a finished protector lacking the necessary uniformity of physical properties.

The present invention involves rolling a length of fibrous bandage back onto a table or other horizontal support while simultaneously dispensing a band of early-curing polyurethane foam between the side edges of the bandage strip. (meter) intended as a dispensing device. initial rise
During the short rest period in contact with the fibrous bandage, as in e), the polyurethane foam becomes embedded in the material. The resulting composite is then easily handled, wrapped around the injured limb as a flexible solfoam, shaped into the desired shape, and allowed to harden into a rigid, lightweight protectant.

Accordingly, it is a general object of the present invention to provide a new and improved dispensing device for use in making polyurethane foam medical protectants.

Another object of the present invention is to provide a foam/bandage combination applicator that is simple and allows for one-handed operation.

A further object of the invention is to provide a sprayer of the type described which is inexpensive and disposable.

These and other objects and features of the invention will become more apparent from consideration of the following description.

Referring now in detail to the drawings, and in particular to FIGS. 1 and 2, there is shown a finished polyurethane foam medical protector applied to the upper and lower arms/2 of a patient. The protective material 10 generally consists of a flexible net-like foam material and seven or more spirally wound medical protective material materials. The polyurethane foam/which part of the body,
As the foam body/g hardens, the lower garment/4' and the It becomes embedded within the bandage strip 2θ, thus forming an integral structure. Details regarding the elements and composition of such medical protectants are provided in my U.S. Patent No. 30, No.
It is disclosed in No. 9, and referring to the complete text of the present note.

The present invention contemplates the formation of a blemish by means of a dispensing device, which supplies a strip of bandage and, at the same time, dispenses a metered quantity of polyurethane foam that is initially cured on the unwound strip of bandage.
tity) is applied. Referring to Figures 3 and 3, a spreading device 22 constructed in accordance with the present invention includes a yoke arrangement 2≠ and a manual handle 2≠.

The yoke arrangement 2II- supports and rotates the cylindrical bandage roll 30;2. r, in a lignically secure position relative to the support unit 2g, and
A mounting unit 32, generally aligned with the central longitudinal axis 3, is provided for securing the foam chemical canister 3.

As suggested in Fig. 3, the manual handle has a grip portion 3I to provide a one-handed dispensing device.
! i'' and an offset portion II0, said gripping portion 31!i' being arranged approximately parallel to said axis on one side of said axis, thus gripping both together with one hand. The offset portion 110 is pivotally connected to the yoke component on the opposite side of and spaced from the axis 3 by a pigget pin l1-2.

The can 3t contains a suitable amount of the polyurethane sol polymer composition and a liquefied propellant gas (
1equified propellant gas
) is built-in. The pulp units 11/1 are operated by winged operating caps and are held in place by mounting discs or plates 11t♂.

The disc g rests on a raised rim or bead extending outwardly from the top of the hemispherical dome of the can 31I. The malp++ selectively transfers the contents of the cancer to the active cancer fi11. It communicates with a fan-shaped discharge nozzle j0 conveniently formed integrally with the fan-shaped discharge nozzle j0. Conveniently, the wider dimension of the nozzle jO is the same as the bandage roll 30.
and generally parallel to the axis of the dressing material
It exists across the width of Jzzo 20. The strip, 2
0 is rolled back in forming the protectant preform as indicated in Figure J. Furthermore, the 6th and 7th
Referring to the figure, the nozzle jO comprises a tubular pace or shank portion j2 connected to the actuation cap≠O, the shank portion j2 being smaller than the diameter of the actuation cap and thus more For detailed purposes, the annular shoulder j11t is defined.

In order to securely mount the can '3≠, the can mounting unit 32 is provided with a circular strap part jB, which is fitted with an arcuate retractable arm jg and a screw O1 or other releasable fastener. It is configured to tightly hold the cylindrical body portion of the ring. Further, the can attachment unit 32 includes a tongue 1 portion z2 extending forward,
The tongue 12 fits into the facing domed area of the cancer top geta, as shown in Figure 1, thus making the connection between the cancer and the two yaw structures more secure. .

The tongue part is useful for attaching the pin 4t2,
The pigget pin has a swingable handle! Works as a mounting part for Party B. Tongue part O! further serves as a mounting for a C-shaped bandage yoke 6 of the support unit 2, as best seen in FIG.

A removable shaft 6 is journalled between the arms of the C-shaped yoke 6. A strip of bandage fiber 20 of suitable length and width is wound around a tubular core or the like to define a bandage roll 30 which is rotatably mounted by the shaft.

During operation of the spreading device, an appropriate amount of frictional resistance is provided between the bandage roll 30, the arm of the yoke 6, and the shaft to ensure uniform unwinding of the bandage strip. It is being created. Furthermore, the removable attachment of the shaft Af facilitates replacement of the bandage roll when desired.

In forming a medical protector of uniform thickness and strength, it is extremely important that the distribution device 2- delivers a uniform bead of foam material onto the bandage string 2θ. Thus, in accordance with an important feature of the invention, the . . .
is configured to impose an essentially linear force on l'l. To this end, an offset portion tlO of the handle 2B is formed with a centrally arranged notch 70 aligned with the axis of the valve≠≠ and with said axis 3B. As shown in FIGS. 4 and 7, the notch 70 matingly receives the valve actuating canopy flI-B and acts against the shoulder jll. As shown in FIG. 3, the actuation cap has an integral radially and outwardly extending arm or wing 7.2 with a raised end 74'. , the wings 72 serve to position the offset portion with respect to the actuation cap≠B. Further, the installation of the pivot pin ≠ to the handle 2 on one side with respect to the shaft 3 and the position of the grip portion of the handle on the opposite side with respect to the shaft 3 are generally indicated by arrow 7. The movement of the grip part toward the body of the cancer in the direction of B,
converting into a linear inward force on the working pulp generally in the direction of arrow 7g.

Relaxation of the manual grip pressure onto the grip portion 3g causes the compressed internal comb part of the actuator to force the cap in the direction of the arrow go in FIG. 6 and the offset The movement of the part is forced in the direction of arrow g2 about the bidet axis of bidet pin≠2.

In order to more fully understand the present invention, it is beneficial to provide a functional description of how the present dispensing device operates.

Complete bandage roll 30 in place in the yoke configuration 2g
After installing the can 3T and properly charging the can with polyurethane chemicals and propellant to create a pressure higher than atmospheric pressure inside the can, the medical protective material preform/B is first applied to the bandage strip 7″20 by flanging the free end of the g≠ to one edge of the table or countertop g≠ and advancing the spreading device away from the clamp end in the direction of the arrow g shown in the figure. able to make.

As the bandage strip 20 is unrolled, the handle 2 is pushed towards the body of the can 3t in the direction of arrow 7 in FIG. Thus, in order to open the pulp t≠,
Apply a linear inward force up the valve 4/, releasing the I-urethane foam drug onto the bandage string as the bandage string is laid down onto the counter top gll. . Because a substantially linear force is imposed on the pulp ++, the urethane chemical is uniformly distributed from the can 3 and uniformly deposited onto the bandage strips 20. Thus, as shown in FIG. 5, an elongated body of initial hardening foam of approximately uniform height and width is formed. Furthermore, the pressure within the can 32 is related to the diameter of the bandage roll 30.

Thus, as shown in FIG. 5, the foam body is spaced inwardly from the side edges of the dressing strip to facilitate handling of the resulting preform.

Once the desired length of preform is created, the nozzle 2 is manually opened to stop the flow of the 7 ohm chemical.

The bandage strip is then cut transversely to provide the appropriate length for easy handling of the preform. After a short period of time for the urethane chemical to begin to harden, the preform is rolled in an overlapping helical pattern to form the protector 10, as shown in FIGS. 1 and 2. / It is sown in the mawashi of Gu. The injured cavity remains stationary for a further short period of time until the urethane foam has fully hardened into a solid mass.

The can 34t is sized to provide sufficient foam for a single medical protectant or a large portion of such medical protectant, and each mechanical component is constructed of inexpensive materials. ing. Thus, the dispensing device 22 is disposed of in a trash can after one use.

The specific implementations shown and described herein are to be considered primarily as illustrative. Various structural modifications will no doubt occur to those skilled in the art. It is to be understood that such modifications, insofar as they fall within the scope of the claims, form part of the invention.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a patient wearing a full-arm medical protection made using a dispensing device according to the invention; FIG. 2 is a cross-sectional view of the protection itself; FIG. FIG. 3 is a perspective view of a dispensing device constructed in accordance with the principles of the present invention; FIG. 3 shows the spreading device of FIG. 3; FIG. 5 is a cross-sectional view along line j-j of ≠ showing the installation of a band of early-curing polyurethane foam between the side edges of the bandage strip; FIG. is an enlarged partial cross-sectional view showing the valve actuation configuration of the cancer in a rest or neutral position, and FIG. 7 is substantially similar to that shown in FIG. Figure 3 illustrates the pulp operating arrangement in an operating state, imposing a fairly linear group opening force. 10... Finished polyurethane foam medical protective material, /Il... Lower garment, /Otsu... Medical protective material preform, /I... Foam body part, 20... Bandage strip 1.2≠...Yoke configuration, 2B...Manual knob 1.2f...Support unit, 30...Roll, 32...Mounting unit, 3! l...Cancer, 3g
...Grip part, jO...Offset part, 112.
...Pidet pin, 114t...Valve unit, ≠
6... Operating cap, jO... Nozzle, 32...
Shaft part, jl/L... annular shoulder part, Otsuko... tongue part, 6
B...Yoke, 6g...Shaft, 70-...Notch, 7
．． 2--Wings. Agent's name: Kawahara 1) - Ho 1ji 1'F Omote Kotokugansho! No. 7-1137113 2 Name of the invention Form/bandage combination dispensing device for use in making medical protective materials 3 Person making the amendment Relationship to the case Patent applicant 4 Agent Person Postal code 105 5 Date From Issue 6 Number of inventions increased by amendment

Claims (1)

[Claims] In a bulk dispensing device used to make foam medical protective materials, the dispensing device is operated at pressures above atmospheric pressure.
a gun and a yaw arrangement charged with an ome-forming chemical and comprising actuating and dispensing pulp, the yoke arrangement having an attachment device for gripping a portion of the gun; The attachment device holds the cancer in an essentially secure position aligning the pulp to eject foam drug along a longitudinal axis, and the yoke configuration further includes a support device and a support device. a strip material storage roll rotatably mounted on the support device substantially transversely to the longitudinal axis, and a length of strip material is deposited on the roll, and a length of strip material is deposited on the pulp. A manual threading device is provided to impose a linear actuation force, such that actuation of the threading device to open the pulp is horizontal to the yoke configuration for unwinding the strip material from the storage rolls. A length of the stent before being combined with simultaneous movement across the support surface to create a foam medical protector.
Said spreading device 0 characterized in that it forms elongated peaches of foam combined with Juzzo material.