CN2183164Y

CN2183164Y - Intrauterine device and device for placing it

Info

Publication number: CN2183164Y
Application number: CN 92227292
Authority: CN
Inventors: 曹路敏; 吴熙瑞; 周元清; 孙新汉
Original assignee: Tongji Medical University Institute Of Family Planning; Wuhan Family Planning Science And Technology Institute; WUHAN WEIMIN MEDICAL INSTRUMENT FACTORY; Tongji Medical College of Huazhong University of Science and Technology
Current assignee: Tongji Medical University Institute Of Family Planning; Wuhan Family Planning Science And Technology Institute; WUHAN WEIMIN MEDICAL INSTRUMENT FACTORY; Tongji Medical College of Huazhong University of Science and Technology
Priority date: 1992-07-08
Filing date: 1992-07-08
Publication date: 1994-11-23
Anticipated expiration: 2002-07-08

Abstract

The utility model relates to an intrauterine device and a device for placing. The intrauterine device is composed of a fixing knot (1), a chain structure (4), and a tail fire (5), which is characterized in that the chain structure is composed of a thread and cluster-arranging bodies which are made of active materials and are arranged above the thread, and the device for placing comprises a needle (7), a connecting rod (8), a handle (9), and an outer sleeve pipe (10). The connecting rod is provided with a hump, a clamp lead groove is arranged on the handle, and a slot is arranged on the outer sleeve pipe.

Description

Intrauterine device and device for placing it

This utility model belongs to the improvement of intrauterine device (IUD) and apparatus for placing thereof.

The IUD that tradition is used exists because of mechanical stimulus causes bleeding, pain and problem such as easily come off, so that influences continuation rate and contraceptive effect.Therefore, reducing endometrial mechanical stimulus and prevent to come off, is the important topic that current I UD studies.Though the brass chain formula IUD disclosed in the EP-A0100924 patent application has pair endometrium to stimulate advantage little and that be difficult for deviating from, puts for a long time and stays in cavity of uterus, causes contraceptive failure because the corrosion of copper easily makes brass chain rupture.

The purpose of this utility model is above-mentioned intrauterine device is improved, make it can not only remain with catenate flexible structure and in the characteristics of myometrium internal fixation, to reduce endometrial mechanical stimulus and to prevent to come off, and can prevent flexible chain structural break effectively, to keep longer contraceptive effect.

Specific embodiments of the present utility model is, this novel I UD by one be deep into the fixedly knot (1) that plays fixation in the flesh layer of bottom, uterus with link to each other with this fixing knot, by thread (2) be positioned at chain structure (4) and tailfiber (5) the three parts formation that corpusculum that active material (3) constitutes by having on this thread (2), that be the string arrangement is formed.Thread (2) can be made of nylon wire or plastic cord, and its top is made a call to a knot and promptly constituted fixing tie (1), and this is fixed on the knot (1) a ringlet (6), lives intrauterine device insertion fundus of uterus flesh layer usefulness for placing needle guard.Be positioned on the thread (2), the active material that constitutes chain structure (4) with thread (2) jointly is oxygen-free high conductivity type copper or purple naked copper, can use the slow-releasing drug system as active material in addition, be processed into spherical or cylindrical corpusculum, be arranged in one by one on the thread (2).Tailfiber (5) is positioned at the lower end of chain structure, and it can prolong formation by thread (2) for ease of IUD is taken out and designs from cavity of uterus.This tailfiber can have two kinds of forms, and a kind of is the single line structure, is extended downwards by thread (2) to constitute, another kind is a circulus, after being extended downwards by thread (2), turn back upwards, the line end of the thread upwards of turning back is stored among the active material on the chain structure or its lower end again.The design philosophy of circulus tailfiber is the sexual anhedonia in order to reduce or to avoid causing in the external os of vervix because of the tailfiber line end.

Another purpose of the present utility model provides one IUD of the present utility model is inserted and be fixed to the apparatus for placing of fundus of uterus, and it comprises a pin (7) that is used for will fixing knot (1) injecting uterine cancer cell, the connecting rod (8) that links to each other with pin (7), be positioned at the handle (9) that connecting rod (8) is not held, trocar sheath (10), with be positioned at connecting rod (8) lower end (near handle one end) and trocar sheath played the projection (11) of barrier effect, and be positioned at handle (9) and the channel form structure clamp groove (12) of projection between (11), chute (13) with the longitudinal opening of the lower end that is positioned at trocar sheath (10) (end of armrest handle (9)).The top of pin (7) is a prong like, is used to pitch the ringlet of fixedly tying of IUD (6), and clamp groove (12) is fixed in IUD on the apparatus for placing with this for clamping the usefulness of IUD tailfiber.The length of trocar sheath (10) is with suitable to the distance of projection (11) by the top of pin (7), promptly when chute (13) departs from projection (11), the lower end of trocar sheath (10) is held up by projection (11) or stops, at this moment, pin (7) is not revealed on the top of trocar sheath (10), and promptly the top of pin (7) is positioned within the trocar sheath (10); When chute (13) alignment bumps (11), driving handle (9), pin (7) and connecting rod (8) slide in the tube chamber of trocar sheath (10), the result who slides is that the front end of pin (7) is exposed on telescopic outside top, this length of exposing pin (7) is inserts the myometrial degree of depth, and it can be controlled by following two aspects: 1, the length of chute (13).2, projection (11) is to the distance of the connecting rod between the handle (9), because greater than the transverse section of trocar sheath, so can stop trocar sheath to continue to glide, slide thereby stop it the transverse section of handle portion.

Fig. 1 is the embodiment of the IUD that provides of this utility model.

Fig. 2 is another embodiment of the IUD that provides of this utility model.

Fig. 3 is the IUD apparatus for placing figure that this utility model provides.

The fixing knot of 1--

The 2--thread

The 3--active material

The 4--chain structure

The 5--tailfiber

The 6--ringlet

The 7--pin

The 8--connecting rod

The 9--handle

The 10--trocar sheath

The 11--projection

12--clamp groove

The 13--chute

The 14--static line

Shown in the embodiment of Fig. 1, the formation of IUD is: six by having active material constitutes, leave the garden cylindrical corpuscle of passage on its longitudinal axis position, with thread these six garden cylindrical corpuscles are contacted, thread moves to prevent corpusculum in the knotting of the two ends of corpusculum string.The end points knotting that is positioned at the thread of corpusculum string upper end constitutes fixing knot (1), and leaves ringlet (6); After extending downwards, the thread that is positioned at corpusculum string lower end turns back upwards, its end points is arranged in the knot of corpusculum string lower end, the tailfiber (5) that this promptly constitutes circulus is fixed on the apparatus for placing for ease of the IUD with this ring-type tailfiber structure, is with a static line (14) on its ring-type tailfiber.

Figure 2 shows that the IUD of single line structure tailfiber, its tailfiber extends formation downwards by thread (2), and remainder is identical with precedent.

IUD assembling and placing: the ringlet (6) on the fixing knot (1) of IUD is enclosed within on the vertical prong like of pin (7) on the apparatus for placing, with the pull-up of tailfiber part, make IUD stretching along connecting rod, tailfiber partly is sandwiched in the clamp groove (12) subsequently--for the tailfiber of single line structure, can directly tailfiber (5) be sandwiched in the clamp groove (12); For the tailfiber of circulus, then on the tailfiber of its circulus, interlock a static line (14), this static line (14) is sandwiched in the clamp groove (12), this is about to IUD and is fixed on the apparatus for placing.Put trocar sheath (10) again, the chute (13) on the trocar sheath (10) should rotate on the position of departing from projection (11), makes the top of pin (7) be positioned at trocar sheath.Carry out to place use by medical practitioner after detoxicating is handled with this kind state.When the top of trocar sheath arrived the bottom, uterus, the rotary sleeve pipe made chute (13) alignment bumps (11), driving handle, and fixing knot this moment (1) promptly advances in the myometrium.Tailfiber or static line are emitted from the clamp groove again, slowly withdraw from apparatus for placing, take out trocar sheath at last, cut off unnecessary tailfiber or static line, this promptly finishes the placement of IUD.

The IUD that the utility model provides has characteristics fixing in flexible chain structure and the mesometrium, can effectively reduce endometrial mechanical stimulus and prevents from coming off. In addition, because the chain structure of this IUD is take thread as basic boom, therefore can effectively prevent the fracture that the corrosion because of copper causes, make contraceptive effect that reliable assurance arranged.

Claims

1, a kind of new intrauterine devices care, forms by fixedly knot (1), chain structure (4) and tailfiber (5) three parts that in the flesh layer of uterus bottom, play fixation, it is characterized in that said chain structure (4) is made up of thread (2) and the corpusculum by the bunchiness arrangement with active material (3) formation that is positioned on this thread (2).

2,, it is characterized in that said tailfiber (5) is circulus according to the described new intrauterine devices care of claim 1.

3, according to claim 1,2 described new intrauterine devices care, the thread that it is characterized in that said formation chain structure (4) is a plastic cord.

4, according to claim 1,2 described new intrauterine devices care, what it is characterized in that said formation chain structure (4) has active material (3) by oxygen-free high-conductivity copper, or purple naked copper, or the slow-releasing medicine constitutes.

5, according to the described new intrauterine devices care of claim 3, what it is characterized in that said formation chain structure (4) has active material (3) by oxygen-free high-conductivity copper, or purple naked copper, or the slow-releasing medicine constitutes.

6, a kind of apparatus for placing that inserts intrauterine device in the cavity of uterus and make it to be fixed to fundus of uterus, it includes and is used for the handle (9) and the trocar sheath (10) that will fixing knot (1) insert myometrial pin (7), the connecting rod (8) that links to each other with pin (7), be positioned at connecting rod (8) end, it is characterized in that having on said connecting rod (8) one the projection (11) of trocar sheath (a 10) barrier effect and one is positioned at a clamp groove (12) and a chute (13) that is positioned at the longitudinal opening of trocar sheath (10) lower end on the handle.