AP46A

AP46A - "Aspirate receiver".

Info

Publication number: AP46A
Application number: APAP/P/1988/000095A
Authority: AP
Inventors: Raisa V Gajnutdinova; Yakov G Zhukovskij; Vera M Petrova; Nail T Khusainov
Original assignee: Nauchno Proizvodstvennoe Obiedinenie Medinstrument
Priority date: 1987-07-02
Filing date: 1988-06-28
Publication date: 1989-07-25
Also published as: YU46261B; EP0323527B1; FI890926A; YU113088A; DE3868906D1; JPH02501274A; OA08887A; CN1016229B; WO1989000054A1; CN1030187A; FI890926A0; CA1328389C; BR8807117A; EP0323527A1; EP0323527A4; SU1502035A1; AP8800095A0; BG50964A1

Abstract

The aspirate reciever comprises a bowl (1)with a cap (2)an interior (3)of the bowl (1)communicates with a source of vacuum and is connected, via through hole (4)in the cap (2)to an aspiration tip (5). The bowl (1)with the cap (2)is accommodated in a housing (6)with a cover (7)concentrically with said housing. An annular gap (10)is established between an inner wall (8)of the housing (6)and an outer wall (9)of the bowl (1)said gap communicating with a source of vacuum. The through hole (4)in the cap (2)of the bowl (1)is coaxial with the annular gap (10). The cover (7)of the housing (6)is provided with a sleeve (12). One end (13)of the sleeve (12)is adapted for connection to the proximal end of the aspiration tip (5), while the other end (140 of the sleeve (12)facing inwards the housing 960 is arranged coaxially with the hole (4)in the cap (2)of the bowl (1)and is encompassed by the latter.

Description

ASPIRATE RECEIVER \

The present invention relates generally tn^iirfdfci/J'fqr..ei'rly-stage abortion and for biopsy of the endometrium and, more specifically, to an aspirate receiver.

The present invention is instrumental in giving information on the amount and quality of the aspirate obtained.

One state-of-the-art aspirate receiver is heretofore

A known (US, A, 3,334,538) to comprise a housing oblong lengthwise the receiver longitudinal axis and having a central chamber and a channel thereinside. A container for aspirate collection is held to the housing base, communicating with the central chamber of the housing and arranged square with the longitudinal axis of the housing. The channel runs throughout the housing length so as to communicate the central chamber of the housing with its opposite ends.

A through hole is provided in the housing wall, adapted to adjust the pressure therein and to communicate the housing central chamber with the atmosphere. One of the channel ends communicates with a source of vacuum, while the other end, with the aspiration tip.

The heretofore-known aspirate receiver is characterized by the fact that having connected it to a source of vacuum and to the aspiration tip introduced into the uterine cavity, the surgeon turns the aspirator round its longitudinal axis apart from imparting reciprocation motion thereto. As a result, the container tips turns over, the aspirate is poured out to get to the vacuum .system, which impedes subsequent quantitative and qualitative analysis of the aspirate thus collected.

- 2 The known aspirate receiver is also featured by the fact that the housing has a shape other than a cylindrical one which makes its rotation inconvenient so that rotation of the housing is nonuniform, whereby some fragments of the fertiliz ed egg remain in the uterine cavity.

All the foregoing results in a prolonged time to be spent for surgery.

«

One more aspirate receiver (DE, B, 1,947,123) is known in the present state of the art, which is essentially a bowl with a cap. A through opening is provided in the bowl cap communicating with the bowl interior and. the distal end of the aspiration tip through a.connector element. The axis of the. through opening is offset with respect to the bowl axis. The bowl is made of a polymer material and accommodates a cylinder-shaped meshy element that encompasses a tube provided with through radial holes. The tube interior communicates with a source of vacuum.

Aspirate admitted to the receiver loses - its liquid portion, which makes its way through the cylindrical meshy element into the vacuum system.

The known aspirate receiver is also characterized by the fact that lose of the liquid aspirate portion impedes quantitative analysis of the collected aspirate.

The known aspirate receiver suffers from the disadvantage that an eccentric position of the aspiration tip fails to provide uniform rotation of the housing along with the tip which results in retention of some fragments of the fertilized egg in the uterine cavity. All this leads to a prolonged operating time.

- 3 The known device ia also disadvantageous in that the cylindrical meshy element is difficult to be cleaned of the solid aspirate particles stuck thereto. Besides, when being removed from the cylindrical element such particles are damaged, which interferes with their subsequent histological examination.

The invention has for its object to provide an aspirate receiver 'featuring such an arrangement of the bowl in the housing and such a connection of the aspiration tip to the housing cover that would make it possible to contain the entire aspirate collected in the course of vacuum aspiration of the uterine contents, to make an individual quantitative and qualitative analysis of the collected aspirate, as well as to cut down the postoperative bowl treatment time so as to ensure uninterrupted operation of the aspirate receiver.

The foregoing object is accomplished due to the fact that in an aspirate receiver, comprising a bowl provided with a cap, the interior of said bowl communicating with a source of vacuum and being connected, via a through hole in the bowl cap, to an aspiration tip, according to the invention, the bowl with the cap is accommodated in a housing provided with a cover and arranged concentrically- ‘ with the housing so that an annular gap is established between the housing inner wall and the bowi outer wall, said gap communicating with a source of vacuum, while the through hole in the bowl cap is concentric with the annular gap, and the housing cover is provided with sleeve whose one end is adapted for connection to the proximal end of the aspiration tip, while the other sleeve end facing inwards the housing is arranged coaxially with the hole in the bowl cap. ami is enveloped by said bowl.

- 4 Such a construction arrangement of the aspirate receiver makes it possible to collect the aspirate resultant from the surgery performed, completely and without loss. This in turn enables one to effect its quantitative and qualitative analysis without delay.

Such an embodiment of the aspirate receiver prevents the

X , aspirate from getting into the connecting elements and the va cuum system elements, which is of great importance in AIDS prevention, since it avoids any propagation of the infection contained in blood stains and splashes, and coagulated blood clots deposited upon the connecting elements which are hard-of-access for postoperative treatment.

In addition, the bowl of the herein-proposed aspirator receiver is easy-to-withdraw from the housing, it is readily and rapidly disinfected, after which, the bowl is ready to use again without any danger of the infection propagation. This cuts down the postoperative bowl treatment time, thus ensuring uninterrupted operation of the aspirate receiver.

It is also expedient that the clear passage area of the sleeve end adapted to communicate with the proximal end of the aspiration tip be in excess of the clear passage area of the sleeve end facing the housing interior.

Such a construction arrangement of the sleeve favours proper holding of the aspiration tip and prevents the aspirati from splashing over the bowl inner walls, which enables one to collect the aspirate resultant from the surgery without a

loss.

la wh»* follows the invention is illustrated in a specific exemplary embodiment thereof with reference to the accompanying drawings, wherein:

- 5 Pig. 1 is a schematic longitudinal sectional view of an aspirate receiver, according to the invention;

Pig. 2 is an exploded longitudinal sectional view of an aspirate receiver, according to the invention; and

Pig. 3 is a longitudinal sectional view of an embodiment of a part of a bowl with a cap, showing the cone-shaped cap wall facing the bowl interior, according to the invention.

The aspirate receiver incorporates a bowl 1 (Pig. 1) provided with a cap 2. An interior 3 of the bowl 1 communicates with a source of vacuum (omitted in the drawing). A through hole 4 (Pig. 2) is made in the cap 2, through which the interior 3 (Pig. 1) of the bowl 1 communicates with an aspiration tip 5. The cap 2 of the bowl Γ is shaped as cone frustum and may face its cone-shaped portion outwards (Pig. 2) or inwards the interior 3 of the bowl 1 (Pig. 3). The bowl 1 may be made of a transparent polymer material which enables the surgeon to monitor its filling with the aspirate.

The bowl 1 (Fig. 1) with the cap 2 is accommodated in a housing 6 provided with a cover 7 concentrically with the housing 2 so that an annular gap 10 is established between an inner wall 8 of the housing 6 and an outer wall 9 of the bowl 1, said gap communicating with a source of vacuum (omitted in the drawing). The through hole 4 (Pig. 2) in the cap 2 of the bowl 1 is concentrical with the annular gap 10.

Support elements 11 (Pig. 2) are provided on the outside *

surface of the bottom of the bowl 1. With the bowl 1 put in the housing 6 said elements 11 define channels which favour better air passage.

The cover 7 of the housing 6 is provided with a sleeve

- 6 12 having an outer end 13 and an inner end 14. The clear passage area of the inner end 14 of the sleeve 12 is smaller than that of the outer end 13, which is adapted for holding the aspiration tip 5 in place. A rubber cap 1 5 ia fitted onto the outer end 13 of the sleeve 12, said cap 15 having a hole 16 whose diameter is smaller than the outside diameter of the aspiration tip 5. A reduced clear passage area of the inner end 14 of the sleeve 12 provides for reliable fixing of the different-diameter aspiration tips.

The inner end 14 of the sleeve 12 is coaxial with the hole 4 in the cap 2 of the bowl 1 and is free to pass through the hole 4 into the interior 3 of the bowl 1.

The aspirate receiver of the present invention functions as follows.

The bowl 1 with the cap 2 removed is set into the housing 6 concentrically therewith and with its bottom facing the hous ing end connected to a source of vacuum (omitted in the drawing). Then the bowl 1 and the housing 6 are closed with their respective cap 2 and cover 7. As a result, the inner end 14 of the sleeve 12 enters through the hole 4 in the cap 2 into the interior 3 of the bowl 1, For better holding of the aspiration tip 5 in position and for hermetic sealing of the receiver, the rubber cap 15 ia fitted onto the outer end 13 of the sleeve 12, whereupon the aspiration tip 5 to be introduced into the uterine cavity is passed through the hole 16 in the rubber cap 15 and inserted right home into the outer end 13 ft of the aleeve 12*

Then the surgeon takes hold of the housing 6 with his hand, connects the receiver to the source of vacuum and imparte reciprocating, rocking and rotational (round its longitudinal axis) motions to the housing 6. When the aspiration tip 5 moves backwards so that a small portion of the slot thereof appears from the uterine ostium, the pressure balance occurs with the result that the aspirate is expelled into the bowl 1. For fear lest the aspirate splashes get onto the s

inner walls 8 of the housing 6 the cross-sectional area of « the inner end 14 of the sleeve 12 is reduced as compared with the outer end 13.

Upon terminating the surgery one should remove the aspiration tip 5 from the outer end 13 of the sleeve 12, open the cover 7 of the housing 6, withdraw the bowl 1 with the cap 2, replace the bowl with a fresh one, and may start a next similar procedure.

Then the aspirate contained in the just-withdrawn bowl is subjected to the quantitative and qualitative analysis, the bowl is washed, dipped in a disinfectant solution, whereupon the bowl is ready to use in further surgical procedures.

Thus, it is due to the aforedescribed embodiment of the aspirate receiver that any aspirate loss from the bowl is excluded, a comprehensive individual quantitative and qualitative analysis of the aspirate can be performed rapidly, and a trouble-free uninterrupted operation of the receiver can be ensured due to curtailed time for the bowl postoperative treatment.

AP 0 0 0 0 A 6

Claims

WHAT IS CLAIMED IS: '' '

1 . An aspirate receiver, comprising a bowled )^_wi'th a cap (2), an interior (3) of the bowl communicating with a source of vacuum and being connected, via a through hole (4) in the bowl (2), to an aspiration tip (5), charac t e r i z e d in that the bowl £1) with the cap (2) is concentri cally aqcomraodated in a housing (6) with a cover (7) so that an annular gap (10) is established between an inner wall (Θ) of the housing (6) and an outer wall (9) of the bowl (1), said annular gap communicating with a source of vacuum, while the through hole (4) in the cap (2) of the bowl (1) is coaxial with the annular gap (10), and the cover (7) of the housing (6) is provided with a sleeve (12), one of whose end3 (13) is adapted for connection to the proximal end of the aspiration tip (5), while the other end (14) of the sleeve (12) facing inwards the housing (6) is arranged coaxially with the hole (4) in the cap (2) of the bowl (1) and is encompassed by the latter.
2. An aspirate receiver as claimed in Claim 1, characterized in that the clear passage area of the end (13) of the sleeve (12) adapted for connection with the pro*!πταΙ end of the aspiration tip (5) is in excess of the clear passage area of the end (14) of the sleeve (12) facing inwards the housing (6).