WO1989006112A1 - Obstetric suction device - Google Patents

Obstetric suction device Download PDF

Info

Publication number
WO1989006112A1
WO1989006112A1 PCT/SE1988/000708 SE8800708W WO8906112A1 WO 1989006112 A1 WO1989006112 A1 WO 1989006112A1 SE 8800708 W SE8800708 W SE 8800708W WO 8906112 A1 WO8906112 A1 WO 8906112A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction
beads
obstetric
cup
suction cup
Prior art date
Application number
PCT/SE1988/000708
Other languages
French (fr)
Inventor
Erik Uddenberg
Original Assignee
Menox Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Menox Ab filed Critical Menox Ab
Publication of WO1989006112A1 publication Critical patent/WO1989006112A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/42—Gynaecological or obstetrical instruments or methods
    • A61B17/44—Obstetrical forceps
    • A61B17/442—Obstetrical forceps without pivotal connections, e.g. using vacuum
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/30—Surgical pincettes without pivotal connections
    • A61B2017/306—Surgical pincettes without pivotal connections holding by means of suction
    • A61B2017/308—Surgical pincettes without pivotal connections holding by means of suction with suction cups

Definitions

  • the present invention refers to an obstetric suction device fo vacuum extractors and comprising a suction cup of a flexibl material, intended to be applied to a baby's head prior t delivery, said suction cup having a suction opening means fo connecting a suction tube to said suction cup, and a tractio device attachable to said cup.
  • obstetric suction devices those made from an elastically yielding material, such a silicone rubber, and those made from a rigid material, such a metal, e.g. stainless steel.
  • the injuries which may occur i connection with the use of any of these types of suction device are mainly contusions. Such injuries can occur due to the fac that portions of the skin of the baby's head will adhere to th inside of the cup by the suction force applied therein.
  • One ha tried to avoid this problem by distrubuting the suction forc more evenly over the suction cup, by arranging a plurality o suction openings distributed over a substantial portion of th inner surface of the cup. This arrangement makes the suction cu complicated and expensive to manufacture and it does no eliminate the above problem.
  • the object of the present invention is to provide a suctio device of the kind mentioned above, which is simple and cheap t manufacture and which prevents the skin to adhere to the inne surface of the suction cup by the suction applied therein.
  • Thi has according to the invention been achieved by the fact tha said suction cup on its interior side being provided with plurality of beads arranged at a certain distance from each othe and distrumped over the inner surface of the suction cup, sai beads being arranged to keep the skin of the bab 's head space from the surface portions between the beads.
  • Fig. 1 is a side view of the suction device according to a firs embodiment.
  • Fig. 2 is a vertical section through the suction cup of t device in Fig. 1.
  • Fig. 3 is a section according to the line III-III in Fig. 1.
  • Fig. 4 is a schmematic plan view in a larger scale of t arrangement of the beads inside the suction cup.
  • Fig. 5 is a side view of a modified embodiment of the sucti device according to the invention.
  • Fig. 6 is a vertical section through another embodiment of t suction cup according to the present invention.
  • the obstetric suction device comprising a suction cup 1 of a soft, flexible material, e.g. silico rubber.
  • the suction cup 1 consists of a cup member 2 and a ne portion 3.
  • the cup member 2 has an opening 4 surrounded by inwards directed rounded flange 5 providing a tight connection the baby's head.
  • the cup 2 has a softly rounded shape and in t side wall diametrically opposite the opening 4 there is provid an evacuation opening 6 communicating with a suction channel extending through the neck portion 3.
  • a tube 8 leading to a vacuum device (n shown) which may be either of a manually operated or motor-driv type.
  • the neck portion 3 has at its outer end facing the tube 8 circumferential flange 9 serving as an attachment for a tracti device in the form of string 10, which is laid about the ne portion 3 behind the flange 9 and held in grooves 11 therein.
  • T string 10 is at its opposite end attached to a handle 12.
  • marking 13 serving as a position indicator extends axially alo the neck portion 13.
  • the cup member 2 On the inside of the cup member 2 there is provided a plurali of beads 14 arranged at a certain distance from each other b closely enough to keep the skin of the baby's head spaced fr the surface portions 15 between the beads.
  • the beads 14 have a part-spherical, e.g. half-spherical shape, but they may of course have other rounded shapes.
  • the beads 14 are evenly distributed over the entire inner surfac of the cup member 2.
  • the free distance a between adjacent bead 14 does preferably not exceed the diameter of the beads at thei base, and according to the embodiment of Fig. 2 and 4 thi distance does not exceed the radius of the part-spherical bead 14.
  • the height of the beads 11 exceeds the distance a.
  • the height of the inwards directed rounded flange 5 surroundin the opening 4 is larger than the height of the beads 14, so tha a tight connection to the baby's head is provided.
  • Fig. 5 differs from the one accordin to Fig. 1 and 2 by the fact that it lacks the neck portion 8.
  • Th flange 9 for holding the string 10 is arranged at the base of th cup member 2.
  • This suction cup can be applied to the baby's hea at an earlier phase of the delivery as compared to the suctio cup according to Fig. 1 and 2. The latter however provides better hand grip.
  • the embodiment disclosed in Fig. 6 has a traction device 1 formed as an extension of the neck portion 3.
  • the grippin portion 16 is provided with grooves 17 for facilitating gripping
  • the traction device 16 is formed as an integral unit with th neck portion 3 and cup member 2.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Gynecology & Obstetrics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Reproductive Health (AREA)
  • Engineering & Computer Science (AREA)
  • Pregnancy & Childbirth (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)

Abstract

An obstetric suction device for vacuum extractors and comprising a suction cup (2) of a flexible material, means for connecting a suction tube (8) to the suction cup and a traction device (10, 16) attachable or attached to the suction cup. The suction cup (2) is on its interior side provided with a plurality of beads (14) arranged at a certain distance from each other and distributed over the inner surface of the suction cup. The beads are arranged to keep the skin of the baby's head spaced from the surface portions between the beads.

Description

Obstetric suction device
Technical field
The present invention refers to an obstetric suction device fo vacuum extractors and comprising a suction cup of a flexibl material, intended to be applied to a baby's head prior t delivery, said suction cup having a suction opening means fo connecting a suction tube to said suction cup, and a tractio device attachable to said cup.
Background of the invention
There are mainly two categories of obstetric suction devices those made from an elastically yielding material, such a silicone rubber, and those made from a rigid material, such a metal, e.g. stainless steel. The injuries which may occur i connection with the use of any of these types of suction device are mainly contusions. Such injuries can occur due to the fac that portions of the skin of the baby's head will adhere to th inside of the cup by the suction force applied therein. One ha tried to avoid this problem by distrubuting the suction forc more evenly over the suction cup, by arranging a plurality o suction openings distributed over a substantial portion of th inner surface of the cup. This arrangement makes the suction cu complicated and expensive to manufacture and it does no eliminate the above problem.
Summary of the invention
The object of the present invention is to provide a suctio device of the kind mentioned above, which is simple and cheap t manufacture and which prevents the skin to adhere to the inne surface of the suction cup by the suction applied therein. Thi has according to the invention been achieved by the fact tha said suction cup on its interior side being provided with plurality of beads arranged at a certain distance from each othe and distrubuted over the inner surface of the suction cup, sai beads being arranged to keep the skin of the bab 's head space from the surface portions between the beads.
Brief description of the drawings
The invention will below be described more in detail wit reference to a pair of embodiments disclosed in the accompanyi drawings.
Fig. 1 is a side view of the suction device according to a firs embodiment.
Fig. 2 is a vertical section through the suction cup of t device in Fig. 1.
Fig. 3 is a section according to the line III-III in Fig. 1.
Fig. 4 is a schmematic plan view in a larger scale of t arrangement of the beads inside the suction cup.
Fig. 5 is a side view of a modified embodiment of the sucti device according to the invention.
Fig. 6 is a vertical section through another embodiment of t suction cup according to the present invention.
Description of the embodiments
The obstetric suction device according to Figs. 1 and 2 compris a suction cup 1 of a soft, flexible material, e.g. silico rubber. The suction cup 1 consists of a cup member 2 and a ne portion 3. The cup member 2 has an opening 4 surrounded by inwards directed rounded flange 5 providing a tight connection the baby's head. The cup 2 has a softly rounded shape and in t side wall diametrically opposite the opening 4 there is provid an evacuation opening 6 communicating with a suction channel extending through the neck portion 3. To the suction channel there can be connected a tube 8 leading to a vacuum device (n shown) which may be either of a manually operated or motor-driv type.
The neck portion 3 has at its outer end facing the tube 8 circumferential flange 9 serving as an attachment for a tracti device in the form of string 10, which is laid about the ne portion 3 behind the flange 9 and held in grooves 11 therein. T string 10 is at its opposite end attached to a handle 12. marking 13 serving as a position indicator extends axially alo the neck portion 13.
On the inside of the cup member 2 there is provided a plurali of beads 14 arranged at a certain distance from each other b closely enough to keep the skin of the baby's head spaced fr the surface portions 15 between the beads. In the embodiment shown the beads 14 have a part-spherical, e.g. half-spherical shape, but they may of course have other rounded shapes.
The beads 14 are evenly distributed over the entire inner surfac of the cup member 2. The free distance a between adjacent bead 14 does preferably not exceed the diameter of the beads at thei base, and according to the embodiment of Fig. 2 and 4 thi distance does not exceed the radius of the part-spherical bead 14. The height of the beads 11 exceeds the distance a.
The height of the inwards directed rounded flange 5 surroundin the opening 4 is larger than the height of the beads 14, so tha a tight connection to the baby's head is provided.
The embodiment disclosed in Fig. 5 differs from the one accordin to Fig. 1 and 2 by the fact that it lacks the neck portion 8. Th flange 9 for holding the string 10 is arranged at the base of th cup member 2. This suction cup can be applied to the baby's hea at an earlier phase of the delivery as compared to the suctio cup according to Fig. 1 and 2. The latter however provides better hand grip.
The embodiment disclosed in Fig. 6 has a traction device 1 formed as an extension of the neck portion 3. The grippin portion 16 is provided with grooves 17 for facilitating gripping The traction device 16 is formed as an integral unit with th neck portion 3 and cup member 2.
The invention is of course not limited to the embodiment described above and shown in the drawings but a plurality of modifications are possible within the scope of the claims.

Claims

Claims
1. An obstetric suction device for vacuum extractors an comprising a suction cup (2) of a flexible material, intended t be applied to a baby's head prior to delivery, said suction cu having a suction opening (4), means for connecting a suction tub (8) to said suction cup and a traction device (10;16) attachabl or attached to said cup, c h a r a c t e r i z e d i n, that said suction cup (2) on its interior side is provided with plurality of beads (14) arranged at a certain distance from eac other and distrubuted over the inner surface of the suction cup said beads arranged to keep the skin of the baby's head space from the surface portions (15) between the beads.
2. The obstetric suction device as claimed in claim 1, c h a r a c t e r i z e d i n, that the free distance (a) between adjacent beads (14) does no exceed the diameter of the beads at their base.
3. The obstetric suction device as claimed in claim 1 or 2, c h a r a c t e r i z e d i n, that the free distance (a) between adjacent beads (14) does no exceed the height of the beads.
4. The obstetric suction device as claimed in any of th preceding claims, c h a r a c t e r i z e d i n, that the beads (14) are of a part-spherical shape.
5. The obstetric suction as claimed in claim 4, c h a r a c t e r i z e d i , that the free distance (a) between adjacent beads (14) does no exceed the radius of the beads.
6. The obstetric suction device as claimed in any of th preceding claims, c h a r a c t e r i z e d i n, that the suction cup (2) is provided with a neck portion (3) provided with holding means (9) for a traction device (10), suc as a string, ribbon or the like.
7. The obstetric suction device as claimed in any of claims 1-6, c h a r a c t e r i z e d i n, that the suction cup (2) is provided with a neck portion (3), that the traction device (16) is designed as an integra extension of the neck portion and that a suction channel (7) extends through the neck portion (3) and traction device (16).
8. The obstetric suction device as claimed in any of th preceding claims, c h a r a c t e r i z e d i , that the suction opening (4) is surrounded by an inwards directe rounded flange (5) of a height exceeding the height of the bead (14).
PCT/SE1988/000708 1987-12-29 1988-12-28 Obstetric suction device WO1989006112A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13902087A 1987-12-29 1987-12-29
US139,020 1987-12-29

Publications (1)

Publication Number Publication Date
WO1989006112A1 true WO1989006112A1 (en) 1989-07-13

Family

ID=22484767

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1988/000708 WO1989006112A1 (en) 1987-12-29 1988-12-28 Obstetric suction device

Country Status (2)

Country Link
AU (1) AU2908589A (en)
WO (1) WO1989006112A1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5224947A (en) * 1991-10-21 1993-07-06 Cooper Richard N Soft, readily expandable vacuum bell assembly
WO1993021868A1 (en) * 1992-04-24 1993-11-11 Mohamed Ibrahim Rasheed Traction device
US6059795A (en) * 1998-05-08 2000-05-09 Clinical Innovations Maneuverable fetal vacuum extraction for use with malpresenting fetus
US6074399A (en) * 1998-05-08 2000-06-13 Clinical Innovations Hand-held fetal vacuum extractor having an integrated pump and handle
US6355047B1 (en) 1998-05-08 2002-03-12 Clinical Innovations Traction force sensing vacuum extractor
US6361542B1 (en) 2000-05-17 2002-03-26 Prism Enterprises, Inc. Obstetrical vacuum extractor cup with force measuring capabilities
EP1671599A1 (en) * 2004-12-14 2006-06-21 Medela Holding AG Obstetric delivery device
FR2918869A1 (en) * 2007-07-16 2009-01-23 Collin Orl Sa Suction system's cup for obstetric extraction of foetus during childbirth, has plate extending transversely in chamber with respect to bottom wall at distance from opening and comprising downstream surface extending with respect to opening
JP2010125037A (en) * 2008-11-27 2010-06-10 Kenji Ishii Suction cup for delivery
CN105769306A (en) * 2016-01-23 2016-07-20 林彩莲 Delivery-aiding device provided with sucker for obstetrical department
GB2534405A (en) * 2015-01-23 2016-07-27 Guy's And St Thomas's Nhs Found Trust Obstetric device
US10219833B2 (en) 2015-01-23 2019-03-05 Guy's And St Thomas' Nhs Foundation Trust Obstetric device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE3370C1 (en) * 1892-01-23
US2194989A (en) * 1937-07-07 1940-03-26 Torpin Richard Obstetrical device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE3370C1 (en) * 1892-01-23
US2194989A (en) * 1937-07-07 1940-03-26 Torpin Richard Obstetrical device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5224947A (en) * 1991-10-21 1993-07-06 Cooper Richard N Soft, readily expandable vacuum bell assembly
WO1993021868A1 (en) * 1992-04-24 1993-11-11 Mohamed Ibrahim Rasheed Traction device
US6059795A (en) * 1998-05-08 2000-05-09 Clinical Innovations Maneuverable fetal vacuum extraction for use with malpresenting fetus
US6074399A (en) * 1998-05-08 2000-06-13 Clinical Innovations Hand-held fetal vacuum extractor having an integrated pump and handle
US6355047B1 (en) 1998-05-08 2002-03-12 Clinical Innovations Traction force sensing vacuum extractor
US6361542B1 (en) 2000-05-17 2002-03-26 Prism Enterprises, Inc. Obstetrical vacuum extractor cup with force measuring capabilities
EP1671599A1 (en) * 2004-12-14 2006-06-21 Medela Holding AG Obstetric delivery device
WO2006063804A1 (en) * 2004-12-14 2006-06-22 Medela Holding Ag Obstetric delivery device
FR2918869A1 (en) * 2007-07-16 2009-01-23 Collin Orl Sa Suction system's cup for obstetric extraction of foetus during childbirth, has plate extending transversely in chamber with respect to bottom wall at distance from opening and comprising downstream surface extending with respect to opening
JP2010125037A (en) * 2008-11-27 2010-06-10 Kenji Ishii Suction cup for delivery
GB2534405A (en) * 2015-01-23 2016-07-27 Guy's And St Thomas's Nhs Found Trust Obstetric device
WO2016116758A1 (en) * 2015-01-23 2016-07-28 Guy's And St Thomas' Nhs Foundation Trust Obstetric device
US10219833B2 (en) 2015-01-23 2019-03-05 Guy's And St Thomas' Nhs Foundation Trust Obstetric device
CN105769306A (en) * 2016-01-23 2016-07-20 林彩莲 Delivery-aiding device provided with sucker for obstetrical department

Also Published As

Publication number Publication date
AU2908589A (en) 1989-08-01

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