JPH06217991A - Vacuum aspirator for delivery - Google Patents

Abstract

PURPOSE: To obtain a vacuum siphon for childbirth by installing a soft, liner on a fringe part of a cup where the tissues of the mother and the scalp of the fetus contact. CONSTITUTION: A vacuum siphon for childbirth has a substantially bell-like vacuum cup 10 equipped with a relatively thin fringe dilating outside, a main body thicker than the fringe and the base connected to a hollow stem 12. The vacuum siphon is equipped with an open end for the stem 12 to be linked to the vacuum source and a handle 14 to facilitate the function of the vacuum siphon. The vacuum siphon further has a flexible liner equipped with an outside bead positioned on the fringe dilating outside of the cup 10, to be engaged with the fringe, and the liner is inserted within the cup. At the bottom of the cup the base is installed to be fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a child (fetus) at the time of delivery.
The present invention relates to a device for suctioning.

[0002]

2. Description of the Prior Art In some cases, during childbirth, a complete natural childbirth cannot be achieved, and the child must be delivered with the help of a doctor. Although such assistance is provided with forceps and similar devices, these devices are large and difficult to operate, and the use of these devices can hurt or discomfort mothers and children. May be given. In addition to the forceps, there is a vacuum suction device (vacuum suction device) that uses a vacuum cup attached to the head of a child. The long stem used for this operation is connected to the cup. The doctor then manipulates the stem of the device to position it properly while at the same time transmitting a pulling force to the child's head.

US Pat. No. 3,202,152 discloses an existing delivery vacuum aspirator. This U.S. Pat. A stem that allows the addition is described. Similar vacuum aspirators are manufactured and sold by Neward Enterprises, Incorporated (Cucamonga, California).

The vacuum aspirator of the above form has been quite successful and the Neward vacuum cup has a relatively flexible edge used to contact the baby's (fetal) head. And this flexibility forms a good seal.
However, the edges of the cup can rub or scratch maternal or fetal tissue because the edges need to be relatively thin to maintain the desired flexibility.

[0005]

SUMMARY OF THE INVENTION Therefore, the main object of the present invention is to provide a delivery vacuum suction device having an excellent shape. Another object of the invention consists entirely of a conventional suction device and a vacuum cup, but with a soft liner on the edge of the cup which comes into contact with the maternal tissue and the fetal scalp. To provide an aspirator.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a soft and flexible coating (liner),
It improves the conventional vacuum suction device and solves the above-mentioned problems by allowing the patient to have maximum comfort in use without impairing the excellent flexibility and operability of the conventional vacuum suction device. To do.

In one embodiment of the present invention, a conventional Newa
The rd Enterprises vacuum aspirator is provided with a flexible liner or membrane that minimizes trauma to the mother's tissue and exposes any part of the fetal scalp to the suction action of the vacuum cup of the vacuum aspirator. Is cushioned by the liner or membrane to minimize trauma to the tissue surface of the patient that the vacuum aspirator contacts or is attracted by the suction of the cup.

The above and other objects and advantages of the present invention will be better understood from the following detailed description, taken in conjunction with the accompanying drawings.

[0009]

The present invention is an improvement of the suction device disclosed in U.S. Pat. No. 3,202,152, the disclosure of which is incorporated herein by reference. The invention also relates to an improvement of the vacuum suction device marketed under the trademark MITYVAC by Neward Enterprises mentioned above. 1 and 2 show an existing vacuum suction device manufactured by Neward Enterprises Co., Ltd., and show a vacuum suction device to which the improvement of the present invention is added.

The vacuum suction device of FIG. 1 includes a vacuum cup 10 and
It has a long hollow stem 12 and a handle 14.
The tip 16 of the stem 12 is open to the hollow interior and is designed for connection to a suitable plastic tube which is connected to a suitable vacuum source (not shown). The actuation of the vacuum source draws air from the open end 18 of the cup 10 through the hollow interior of the stem 12 and further through the tip 16 of the stem 12. The rib 20 provided on the tip portion 16 of the stem 12 is for ensuring an airtight connection with a vacuum hose (plastic tube). The handle 14 facilitates operation of the entire aspirator, and more particularly when withdrawing a child from a mother.

The vacuum cup 10 is preferably bell-shaped as shown in FIGS. 1-3 and has a thin and flexible outer edge 24. The outer edge 24 has a maximum diameter of 2.375 inches (approximately
60.3 mm) and the depth of the cup 10 is 1.70 inches (about 4 mm).
3.2 mm). A typical range for the thickness of the main tip 26 of the cup 10 is about 0.065 to 0.068 inches (about 1.65 to 1.73 m).
m) is preferred, and the thin outer edge 24 preferably tapers to a thickness of about 0.028 to 0.032 inches (about 0.71 to 0.81 mm). Conventionally, the flexible rim 24 is provided with sufficient flexibility to obtain a good seal with the fetal scalp. The cup 10 has an opening 28 that communicates with the hollow interior of the stem 12 and thus the open tip 16 of the stem 12. The aspirator described above is conventional.

It is desirable that the cup 10 be provided with a soft, flexible edge 24 that provides a good seal with the fetal scalp and is able to imitate hair in the presence of head irregularities and hair. The inventor has attempted to provide a bead on the outer edge 24 of the cup, but this has resulted in the loss of the required flexibility. The vacuum suction device has an appropriate balance between the flexibility of the edge portion and the rigidity of the main body, and the cup 1
It is necessary to maintain a good seal at the 0 opening 18 while at the same time providing some rigidity to allow some manipulation of the fetus during labor.

In accordance with a preferred embodiment of the present invention, a soft, flexible coating or liner 30 is provided on the thin edge 24 of the cup 10, as shown in more detail in FIG. Extends inside and is secured to it. The liner 30 is formed of a rubber-like material such as soft rubber or Silastic rubber, and has a bell shape that essentially matches the inner shape of the cup 10. The liner 30 has a relatively large bead 32 which wraps around the edge 24 of the cup and is bent into a hook on the edge 24 at the location indicated at 34. . Although this hooking action is sufficient, the liner 30 may also be fused or adhered to the rim (outer edge) 24 at the location shown at 34.

The liner 30 then extends into the cup 10,
It is arranged following the inner surface 36 of the main tip 26 of the cup 10 and terminates in an inner flat bottom 38. Liner 30
Its flat bottom 38 is typically molded from rubber or a rubber-like material into the shape shown in FIGS. 2 and 3, which does not reach the inner surface 40 of the base of the cup 10. More specifically, the liner 30 includes a flat surface (bottom) 38 on the cup 10.
It must be pulled by attaching a liner disc 44 that presses in the direction of the base 40. Flat surface 38 of liner 30 and base 40 of cup 10
The distance between and is about 0.05 inch (about 1.3 mm).

The base 40 of the cup 10 includes a conventional Neward
A pair of pegs like the Enterprises aspirator
42 are provided. On the other hand, the disc 44 has the shape of a circular disc and has a pair of holes 46. Each peg 42 is threaded through these holes 46,
And the disk 44 can be ultrasonically fused. Therefore, by pushing the disc 44 down onto the peg 42 and fusing the peg 42 to the disc 44, the liner 30 is pulled taut and follows (matches) the inner surface 36 of the cup 10. The typical thickness of the majority of the liner 30 is 0.030 inches, and the typical thickness of the base 38 is 0.05.
It is an inch (about 1.3 mm). The base 38 of the liner 30 is
It has suitable holes 48 that are aligned with holes 28.
The disc 44 also has a similar hole 50 to allow the cup 10
A vacuum is made to communicate between the inside of the and the hole 28 passing through the stem 12.

In this way, the liner 30 is replaced by the cup 10.
Is hooked onto the outwardly flared edge 24, pulled downward toward the center of the cup 10 and secured by a rigid disc 44 and held taut. The liner 30 is maintained in a tensioned state, thereby retaining a fixed engagement via the large bead 32 on the edge 24 and conforming to the outwardly flared outer edge 24 and the inner wall 36 of the cup 10. The relatively large bead 32 provides a soft contact area that is not scratched during insertion and operation of the vacuum aspirator and attachment to the fetal head.

Although one embodiment of the present invention has been shown and described above, various modifications can be made without departing from the scope of the present invention, and all such modifications and equivalents are within the scope of the present invention. It is included.

[Brief description of drawings]

FIG. 1 is a side view showing a state where a liner according to the present invention is attached to a conventional vacuum suction device manufactured by Neward Enterprises.

2 is a cross-sectional view taken along the line 2-2 of FIG. 1, showing the liner in detail.

FIG. 3 is an enlarged cross-sectional view taken along line 2-2 of FIG. 1, showing a vacuum cup and means for attaching a liner to the vacuum cup.

[Explanation of symbols]

 10 Vacuum Cup 12 Center Stem 14 Handle 16 Tip of Stem 18 Open End of Cup 20 Rib 24 Outer Edge (Flexible Edge, Rim) 26 Main Tip of Cup 28 Stem Opening (Hole) 30 Liner (Coating) 32 Bead 34 Bent point of hook 36 Inner surface of cup (inner wall) 38 Flat bottom of liner (flat surface, base) 40 Base of cup (inner side of base of cup) 42 Peg (peg) 44 Liner disc (Disc) 46 holes 48 holes 50 holes

Claims (5)

[Claims] 1. A delivery vacuum aspirator having a substantially bell-shaped vacuum cup with a relatively thin outwardly flaring edge, a thicker body portion, and a base connected to a hollow stem. The stem is provided with an open end for connecting to a vacuum source, the stem is provided with a handle for facilitating the operation of a vacuum suction device, and an edge extending outward of the cup is provided. A flexible liner having an outer bead disposed on the portion and engaging the edge, the liner extending into the cup and fixed to the base of the cup. A vacuum aspirator characterized in that 2. The delivery vacuum inhaler according to claim 1, wherein the liner is secured within the cup by a rigid circular disc secured to a peg extending from the base of the cup. 3. The liner is about 0.03 inches (about 0.76 m).
The delivery vacuum inhaler according to claim 1, characterized in that it is made of rubber or a rubber-like material having a wall thickness of m) and a base thickness of about 0.05 inch (about 1.3 mm). 4. A vacuum cup having a substantially bell shape, the vacuum cup having a body portion having a relatively thin edge outwardly flaring at the open end, and the open end. And a base on the opposite side, having a long stem extending from the base of the cup,
The stem is hollow and has a through opening communicating with the inside of the cup, and a tip for connecting to a vacuum source, and the stem has a handle for facilitating the operation of the vacuum suction device. A labor vacuum aspirator in which a cup, a stem and a handle are molded from plastic as an integrated unit, having a flexible liner disposed in the cup, the flexible liner extending outward of the cup. An outer bead disposed on the edge and hooked to the edge,
The flexible liner extends inside the cup to the base of the cup,
A delivery vacuum aspirator characterized in that it is fixed to the base of the cup by a rigid disc fixed to the base of the cup. 5. The vacuum for delivery as claimed in claim 4, wherein the liner is made of rubber or a rubber-like material, and the rigid disc is fixed to a peg extending from the base of the cup. vessel.