WO1994013233A1 - Combination of a contraceptive device for the uterus and a suitable applicator - Google Patents
Combination of a contraceptive device for the uterus and a suitable applicator Download PDFInfo
- Publication number
- WO1994013233A1 WO1994013233A1 PCT/DE1993/001175 DE9301175W WO9413233A1 WO 1994013233 A1 WO1994013233 A1 WO 1994013233A1 DE 9301175 W DE9301175 W DE 9301175W WO 9413233 A1 WO9413233 A1 WO 9413233A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hollow rod
- stamp
- contraceptive device
- hollow
- longitudinal
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F6/00—Contraceptive devices; Pessaries; Applicators therefor
- A61F6/06—Contraceptive devices; Pessaries; Applicators therefor for use by females
- A61F6/14—Contraceptive devices; Pessaries; Applicators therefor for use by females intra-uterine type
- A61F6/142—Wirelike structures, e.g. loops, rings, spirals
- A61F6/144—Wirelike structures, e.g. loops, rings, spirals with T-configuration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F6/00—Contraceptive devices; Pessaries; Applicators therefor
- A61F6/06—Contraceptive devices; Pessaries; Applicators therefor for use by females
- A61F6/14—Contraceptive devices; Pessaries; Applicators therefor for use by females intra-uterine type
- A61F6/18—Inserters or removers ; Apparatus for loading an intra-uterine device into an insertion tube
Definitions
- the invention relates to a combination of an intra-uterine contraceptive device and a corresponding insertion device.
- a combination of an intra-uterine contraceptive device and a corresponding introducer is known from US Pat. No. 3,783,861.
- the contraceptive device has a tension-resistant fastening part at the caudal end and can be used as a "T" shape, in which an angled arm, which points in two directions, is arranged at the cranial end of the body.
- the insertion device is a cylindrical hollow rod with a longitudinal slot. An easily displaceable stamp is guided in the hollow rod. A slider for handling is connected to the stamp. A stop to limit the insertion depth of the combination is adjustable. Due to its elasticity, the body of the contraceptive device can be drawn into the cranial end of the hollow rod due to its elasticity.
- the object of the invention is to make it easier for the doctor to handle the combination, to make the insertion technique safer and to allow the correct position of the intra-uterine contraceptive device. SOLUTION TO THE TASK
- the contraceptive device consists of a hollow or solid, cuboid or cylindrical body, from at least two elastic arms, the are arranged at the cranial end of the body, and from a pressure and tensile-resistant fastening part at the caudal end
- the insertion device consists of a hollow rod adapted to the contraceptive device with a longitudinal slit, the longitudinal slit extending at least in the longitudinal direction extends an area which, viewed from the cranial end, begins at a distance which corresponds to the distance from the fundus uteri to the cervix and extends over the length which corresponds to the length of the contraceptive device with the arms folded, from a in the hollow rod easily displaceable Ste mpel and a arranged on the stamp, compared to the stamp difficult to slide, c) the slide from an outer body that at least partially surrounds
- the longitudinal slot can extend at most over the entire length of the hollow rod. However, this weakens the stability of the hollow rod. Depending on the choice of material for the hollow rod, this weakening will not have any negative effects on the insertion process.
- a parallel embodiment achieves the task by a combination of an intra-uterine contraceptive device and a corresponding introducer with the following features: a) the contraceptive device consists of a hollow or solid, cuboid or cylindrical body, from at least two elastic arms attached to the cranial
- the insertion device consists of a hollow rod adapted to the contraceptive device with at least two longitudinal slots, the longitudinal slots extending in the longitudinal direction at least over an area extend starting from the cranial end at a distance which corresponds to the distance from the fundus uteri to the cervix, and extends over the length that corresponds to the length of the contraceptive
- the Device with the arms folded corresponds to a stamp which is easily displaceable in the hollow rod and a slide which is arranged on the stamp and is difficult to move relative to the stamp, c) the slide consisting of an outer body which at least partially surrounds the hollow rod, consists of at least one sliding body which touches the stamp on the outside of the stamp and consists of at least two webs which connect at least one sliding body and the outer body through the longitudinal slots of the hollow rod and are guided in it, d) the contraceptive device is in the cranial end of the hollow rod can be inserted at least with the body.
- the slide ensures that the cranial end of the combination is at a defined distance from the fundus uteri. This prevents the device from being pushed further into the uterus than desired. Only by pulling the hollow rod out of the uterus while the stamp remains at the same time does the device unfold safely for the woman. An unplanned further pushing the stamp and thus the device is made impossible. It is advantageous that the free ends of the arms have thickened portions. These prevent perforation of the fundus uteri when the combination is introduced. Due to the position of the unfolding device which is to be predetermined precisely, the arms open in a predetermined manner in the direction of the two tubes of the uterus if the doctor has previously correctly aligned the device.
- the stability of the second embodiment is ensured in that the longitudinal slots below and / or above the area in which the slide must be able to be moved are bridged by connections, so that the hollow rod is inherently more stable.
- a combination according to the invention is preferred in which the longitudinal slot or the longitudinal slots are open at the caudal end or cranial end. This facilitates the composition of the combination before use.
- a combination according to the invention is more preferred, in which the longitudinal slot or slots are only open at the caudal end.
- the stability of the hollow rod can be achieved by a combination according to the invention, in which the hollow rod has at least one clasp outside the range of movement of the slide which encompasses the hollow rod at least in the region of the longitudinal slot or slots.
- the longitudinal slot or slots serve for the hollow bar to be freely movable relative to the slide.
- the slider should rest against the cervix when inserting the device. Therefore, it must be arranged outside the hollow bar.
- the stamp should assume the same position with respect to the cervix when the device is unfolded.
- the punch and the slide must therefore be connected to one another by force. This is made possible by the web or webs that protrude through the longitudinal slots. This also specifies the width and the minimum length of the longitudinal slots.
- the longitudinal slot or slots advantageously extend from the point approximately 4 cm from the cranial end of the hollow bar to the caudal end of the hollow bar. The length of 4 cm is determined by the length of the uterus minus a small safety distance.
- the open end of the longitudinal slot or slots is disadvantageous for the stability of the hollow bar, but is advantageous for the assembly of the hollow bar and punch.
- the disadvantage of the open longitudinal slot can be eliminated if one or more clips are placed around the hollow body.
- the clips should have one or more protrusions on their inner wall, which protrude into the longitudinal slots.
- the hollow rod regains its stability that it would have with one or more non-open longitudinal slots.
- the clasp is only closed after the star tip has been inserted into the hollow rod. Simple adhesion or plug connections are conceivable for this closing process.
- the clasp can be supplied loose, advantageously the clasp is already partially fastened to the hollow rod, for example in the area which is as far as possible from the longitudinal slot or slots.
- the hollow rod and the clasp can easily be connected to one another by means of an adhesive process or a line weld.
- the stamp in the form of a hollow cylinder.
- the web On the outer wall of this sliding body is the web, which connects the outer body to the sliding body through the longitudinal slot.
- the web should have the dimensional stability that tilting within the longitudinal slot is avoided and the doctor can move the sliding body relative to the stamp with a great effort (adjusting the pusher to the individual length of the uterus before the insertion process) .
- a combination is advantageous in which the cross sections of the body of the contraceptive device and the complementary inner space of the hollow body are not rotationally symmetrical at least in sections. This ensures that the doctor can see from the position of the hollow rod how the device is aligned. If the doctor turns the hollow rod correctly, he can be sure that the arms of the device can unfold into the two tubes of the uterus. An easy-to-understand marking or change in the surface structure on the hollow rod should make the doctor's eye aware of how the device is aligned.
- a combination is advantageous in which the hollow rod has cutouts at its crania opening for receiving the unfolding arms.
- the device is always aligned correctly when the arms are spread apart. Hollow rod and device cannot twist against one another in an uncontrolled manner. It is also advantageous if the thickenings at the ends of the arms partially engage in the cutouts when the device is maximally drawn into the hollow rod.
- Another advantageous embodiment of the combination consists in the fact that in the caudal area of the stamp a stamp holder and the hollow stab have at least one holder for handling. These brackets enable the attending physician to operate the combination with one hand. As a result, the movement is more coordinated, since the hand muscles are finer in motor skills than the arm muscles otherwise required for ambidextrous activity. Muscle parts which are suitable for such a contraction and which are usually well practiced by a doctor are also involved in the movement sequence. The movements when injecting an injection or laying a catheter are very similar. The alignment of the hollow rod and thus the device can also be recognized by the doctor in a simple manner and checked by hand. Thus, the insertion process is significantly improved, a lesion of the fundus uteri is no longer possible with proper handling, the movement sequence is very easy to control and the alignment of the device can be determined at the position of the hollow rod during the unfolding of the arms.
- the hollow rod is at least partially transparent and the stamp bears a marking.
- the length information that was previously determined when measuring the uterus with the probe can be transferred to the combination.
- the distance between the fundus uteri and the cervical exit is measured with the probe. This value is important in order to be able to set the distance between the ends of the arms in the collapsed state drawn into the hollow rod and the slide.
- the slide is set in the appropriate position on the stamp, whereby a safety distance between the thickening and the fundus uteri must be observed.
- the stamp has a rough surface, at least in part. This surface guarantees safe static friction.
- a combination is also advantageous in which the slide has two opposite sliding bodies or one cylindrical sliding body. If there are two sliding bodies, the hollow rod has two longitudinal slots; if there is one, only one longitudinal slot is encountered.
- the force that must be applied to move the slide on the stamp must be such that the doctor can push the slide into the required position without effort.
- the static friction should be so great that when the combination is introduced the slide cannot be moved relative to the stamp upon contact with the cervix.
- the slide must have such a friction with respect to the punch that it does not allow sliding with slight action, but sliding with greater effort (actions during handling before inserting the combination) is possible without problems.
- the known devices are usually pessaries, which are surrounded by a noble metal spiral, preferably made of copper wire.
- the body of the contraceptive device can also be a container.
- contraceptive substances e.g. Progestogens.
- the container takes on the function of a depot that gradually releases the substance. It is advantageous if the body of the contraceptive device is a container with at least one semi-permeable wall.
- the contraceptive substance can penetrate through this in dissolved form, but not in crystalline form.
- the time required for going into solution to achieve a sensible dosage can be determined by appropriate galenics.
- the body can be a container with at least one opening. This can be the case when administering e.g. healing drugs that are supposed to work locally.
- a further embodiment according to the invention consists in that the hollow rod has at least one clasp outside the range of movement of the slide, which includes the hollow rod at least in the region of the longitudinal slot or slots. This stabilizes the hollow rod. This is particularly useful if the longitudinal slot or slots extend as far as the caudal end of the hollow rod.
- the clasp can be ring-shaped, but can consist of a hollow cylinder segment which has two plug connections on the inside, which engage in an opening on each side of the longitudinal slot on the hollow rod.
- Cranial and caudal The cranial end of a combination points towards the patient's head during the insertion process of the combination.
- the caudal end points in the opposite direction.
- the terms cranial and caudal refer to the combination in the assembled state during the insertion process.
- the fastening part of the device must be able to absorb tensile and shear forces.
- the stamp usually pushes, whereas two plastic threads exert the tensile forces.
- Hollow bar and punch are shaped so that they are preferably complementary in terms of their cross section.
- a stamp with a square cross-section and grooves on opposite surfaces is useful if the slide has two sliding bodies that engage in the grooves.
- Slightly slidable means that the plunger can be slid relative to the hollow body without significant friction. Both before and during the insertion process of the device, the stamp and the hollow body must be able to slide against one another without any effort. Difficult to move means that the slide can only be moved with force compared to the stamp. The static friction is so great that the doctor sets the slide to a position previously determined by the probe. He sensibly uses both hands for this process. The position of the slider on the stamp, on the other hand, is not changed if the slider touches the cervix with its cranial part and exerts pressure on it.
- both the body and the arms are preferably drawn into the cranial end of the hollow rod. Only the thickenings at the ends of the arms look out of the opening of the hollow rod.
- the cross section of one of the parts of the combination is perpendicular to the longitudinal axis of the combination.
- the longitudinal axis extends parallel to the longitudinal axis of the hollow rod from caudal to cranial.
- a body is not rotationally symmetrical if it has a configuration that deviates from the circular shape.
- the brackets can be shaped in different ways.
- the circular configuration is preferred since this allows the doctor to master the combination best.
- Semicircular and flat holders are also conceivable.
- FIG. 1 shows an intra-uterine contraceptive device in FIG. 1
- FIG. 2 shows a hollow rod in the same top view as FIG. 1
- FIG. 3 shows a stamp in the same top view as FIG. 1
- FIG. 4 shows a stamp with a slider pushed on in cross section, the cutting planes perpendicular to the top view in FIG Figure 1 stands
- Figure 5 shows a cross section through the punch and the slide, the cross section perpendicular to the longitudinal axis of the hollow bar.
- FIGS. 1 to 3 show the parts of the combination, the cranial areas pointing upwards and the caudal areas pointing downwards.
- the proportions from length to width are not to scale. While the length is drawn on a scale of about 1: 1, the width of the hollow rod and slide in particular is significantly increased in order to keep the lines in the drawing separate.
- the actual dimensions are such that the stamp and the device have approximately the same thickness and lie displaceably on the inner wall of the hollow rod.
- the cylinder wall of the hollow rod is thin.
- FIG. 1 shows an intra-uterine contraceptive device 1 which consists of a central cylindrical body 2, to the cranial end of which two elastic arms 3 and 3 'are attached.
- the cranial ends of the arms each have a thickening 7 and 7 '.
- a fastening part 4 is arranged, which has an eye 5 in the middle, through which two plastic threads 6 and 6 'are drawn.
- a hollow rod 8 can be seen in FIG. 2, which has a cranial and a caudal opening 9 and 10.
- the otherwise circular cranial opening 9 has two recesses 1 1 and 11 ' , which are arranged on opposite sides of the cranial openings 9.
- the recesses 1 1 and 1 1 ' are so large that the thickenings 7 and 7' of the device 1 partially lie therein. This is the case when the device 1 is maximally drawn into the hollow rod 8.
- the caudal end of the device 1 is inserted into the cranial opening 9 of the hollow rod 8.
- the arms are shown in the folded state in FIG. 1, which is the case when the device 1 is completely drawn into the hollow rod. Only parts of the thickenings partially protrude through the cranial opening 9.
- the hollow rod 8 has a longitudinal slot 12 which is arranged at 90 ° with respect to the hollow cylinder of the hollow rod with respect to the two cutouts 11 and 11 ' .
- the longitudinal slot 12 begins approximately at the first third of the crania part of the hollow rod 8 and ends openly at the caudal opening 10 of the hollow rod 8.
- a clasp 13 is arranged on the caudal part of the hollow rod 8, close to the caudal opening 10. This clasp 13 is shown in a closed form. The opened clasp looks such that a tongue 14 of the clasp can be moved and therefore no longer covers the longitudinal slot 12. When the clasp 13 is closed, the tongue 14 overlaps an end 15 of the clasp.
- the tongue 14 has an opening on the side facing the hollow rod, which opening can be inserted into a corresponding plug connection of the clasp end 15 on the side pointing away from the hollow rod. (Opening and corresponding plug connection are not shown).
- the closed clasp 13 serves to eliminate the instability of the hollow rod 8 caused by the longitudinal slot 12. The clasp can then be dispensed with if the cylinder wall of the hollow rod 8 is sufficiently thick.
- brackets 16 and 16 ' are arranged which protrude in the same direction in which the cutouts 11 and 11 ' also point.
- the brackets 16 and 16 ' are designed like the finger openings, for example, scissors.
- the index finger and the middle finger are inserted through them.
- the holders are arranged in the caudal area of the hollow rod 8, about a sixth of the total length of the hollow rod 8 from the caudal opening 10.
- the plastic threads 6 and 6 'of the device 1 serve to pull the device into the hollow rod 8 and later to be able to pull the device 1 out of the uterus.
- a stamp 17 and a slide 18 are shown in FIG.
- the stamp 17 carries at its caudal end a star holder 19.
- the surfaces formed by the stamp holder 19 and the holders 16 and 16 ' lie essentially on one plane.
- the stamp bears markings 24, with the aid of which the slide 18 can be set to the desired distance.
- the cranial end of the stamp 17 is inserted into the caudal opening 10 of the hollow rod 8.
- the slider is also pushed over the open clasp 13, which has a bending area 20 which allows the tongue 14 to bend.
- the slide 18 slides over the hollow rod 8 and also over the tongue 14 lying in the direction of movement.
- FIG. 4 shows the stamp 17 and the slide 18 in cross section, the sectional plane coinciding with the longitudinal axis of the stamp 17.
- the slider 18 consists of a slide body 21 bearing against the stamp 17 and a hollow cylindrical outer body 22, the axis of which coincides with the axis of the stamp 17. While the inner wall of the outer body 17 has a circular shape, the outer wall has an oval shape. The long transverse axis of the oval lies in the plane of the holders 16 and 16 'and the stamp holder 19.
- the outer body 22 and the sliding body 21 are connected to one another by a web 23, the web coinciding with the small transverse axis of the oval.
- FIG. 5 shows the slide 18 in cross section, the cross section running perpendicular to the axis of the stamp 17.
- the oval cross section is particularly well visible.
- the position of the web 23 can also be seen, which connects the sliding body 21 and the outer body 22 to one another.
- the combination is offered to the doctor in disassembled form.
- the doctor composes the combination in the following way.
- the threads 6 and 6 'of the device are inserted into the cranial opening 9 of the hollow rod 8 and pushed through to the caudal opening 10.
- the device 1 is then drawn into the hollow rod 8 by means of the threads until the thickenings 7 and 7 ' just look outside the cranial opening 9.
- the thickenings are partially in the recesses 11 and 11 ' .
- the operation of the combination is made safer if the device 1 and the hollow rod 8 are not rotationally symmetrical in the area of the retracted device. As a result, the device is forcibly pre-oriented into a position required for insertion.
- the stamp 17 is inserted with its cranial end into the caudal opening 10 of the hollow rod 8 in such a way that the web 23 comes to rest in the longitudinal slot 12. If the slide 18 is pushed further, the tongue 14 of the clasp 13 is displaced in the direction of movement and slides past between the outer body 22 and the sliding body 21. The clasp is then closed by pressing the opening of the tongue onto the corresponding plug connection on the clasp. The doctor still has the task of setting the slide 18 to the marking 24, which corresponds to the distance previously determined with the probe. The marking can be read easily, since the hollow rod is made of transparent material.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI952713A FI952713A0 (en) | 1992-12-04 | 1995-06-02 | Combination of a uterus intended contraceptive device and a corresponding insertion device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924241662 DE4241662A1 (en) | 1992-12-04 | 1992-12-04 | Combination of a contraceptive device for the uterus and a corresponding introducer |
DEP4241662.0 | 1992-12-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994013233A1 true WO1994013233A1 (en) | 1994-06-23 |
Family
ID=6474925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1993/001175 WO1994013233A1 (en) | 1992-12-04 | 1993-12-06 | Combination of a contraceptive device for the uterus and a suitable applicator |
Country Status (4)
Country | Link |
---|---|
CA (1) | CA2150908A1 (en) |
DE (1) | DE4241662A1 (en) |
FI (1) | FI952713A0 (en) |
WO (1) | WO1994013233A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19815552C1 (en) * | 1998-04-07 | 1999-09-16 | Siegfried Riek | Insertion instrument for inter uterine device |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3783861A (en) * | 1971-06-11 | 1974-01-08 | Searle & Co | Inserter for intrauterine devices |
FR2227010A1 (en) * | 1973-04-25 | 1974-11-22 | Alza Corp | |
US3927666A (en) * | 1972-11-21 | 1975-12-23 | Alza Corp | Inserter for intrauterine device |
US3965891A (en) * | 1971-10-07 | 1976-06-29 | A. H. Robins Company, Incorporated | IUD prepackaged in a tubular inserter |
FR2385410A1 (en) * | 1977-03-28 | 1978-10-27 | Ortho Pharma Corp | INSTRUMENT AND METHOD FOR INSERTING AN INTRA-UTERINE CONTRACEPTIVE DEVICE |
EP0160633A1 (en) * | 1984-03-29 | 1985-11-06 | Dirk Wildemeersch | Apparatus for attaching an intra-uterine contraceptive device to the uterus in the immediate post partum |
FR2620935A3 (en) * | 1987-09-25 | 1989-03-31 | N Proizv Ob Tulatschermet | Apparatus for the introduction of intra-uterine devices |
-
1992
- 1992-12-04 DE DE19924241662 patent/DE4241662A1/en not_active Withdrawn
-
1993
- 1993-12-06 CA CA 2150908 patent/CA2150908A1/en not_active Abandoned
- 1993-12-06 WO PCT/DE1993/001175 patent/WO1994013233A1/en active Application Filing
-
1995
- 1995-06-02 FI FI952713A patent/FI952713A0/en not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3783861A (en) * | 1971-06-11 | 1974-01-08 | Searle & Co | Inserter for intrauterine devices |
US3965891A (en) * | 1971-10-07 | 1976-06-29 | A. H. Robins Company, Incorporated | IUD prepackaged in a tubular inserter |
US3927666A (en) * | 1972-11-21 | 1975-12-23 | Alza Corp | Inserter for intrauterine device |
FR2227010A1 (en) * | 1973-04-25 | 1974-11-22 | Alza Corp | |
FR2385410A1 (en) * | 1977-03-28 | 1978-10-27 | Ortho Pharma Corp | INSTRUMENT AND METHOD FOR INSERTING AN INTRA-UTERINE CONTRACEPTIVE DEVICE |
EP0160633A1 (en) * | 1984-03-29 | 1985-11-06 | Dirk Wildemeersch | Apparatus for attaching an intra-uterine contraceptive device to the uterus in the immediate post partum |
FR2620935A3 (en) * | 1987-09-25 | 1989-03-31 | N Proizv Ob Tulatschermet | Apparatus for the introduction of intra-uterine devices |
Also Published As
Publication number | Publication date |
---|---|
FI952713A (en) | 1995-06-02 |
CA2150908A1 (en) | 1994-06-23 |
FI952713A0 (en) | 1995-06-02 |
DE4241662A1 (en) | 1994-06-30 |
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