CN1196455C - Fixed contraception device introducer - Google Patents

Abstract

A fixed IUD placement device, comprising an outer cannula (1), a placement needle (2), a connecting rod (3) and a handle part (4); the handle part (4) is composed of an outer cylinder (5) and a push rod (6 ) form; there is a tension spring (7), a clamping groove (8), a sliding column (11), and a handle (13) on the push rod (6); there is a cable hole (9), a climbing head on the outer cylinder (5) (10) and chute (12); can strictly control the depth of the fixed IUD inserted into the myometrium of the bottom of the uterus, improve the fixed rate of the fixed IUD in the myometrium, and overcome the traditional placer in operation It is easy to cause uterine perforation, IUD fixation is not firm, not in place and other deficiencies.

Description

Fixed IUD Placer

The invention relates to a medical device, in particular to an improvement of an intrauterine device (IUD) placement device.

The fixed intrauterine device with a chain structure is currently recognized in the field of birth control technology as a birth control device with good birth control effect and few side effects. It uses a special placement device to fix its front end in the muscle layer of the bottom of the uterus. The chain-like structure of the IUD is hung in the uterine cavity, and the copper ring on the IUD that forms the chain structure releases copper ions in the uterine cavity to play a contraceptive effect. The side effects are also small. However, because the existing placer for placing the fixed intrauterine device has the problem that it is difficult to control the depth at which the front end of the IUD is inserted into the myometrium of the fundus of the uterus, the application of this IUD is affected. Currently used fixed IUD placement device, such as the intrauterine device placement device disclosed in the ZL92227292 patent application, the depth of its insertion into the bottom muscle layer of the uterus depends entirely on the operator's feeling and experience, and lacks effective indicator marks and The control method easily causes problems such as uterine perforation, IUD fixation is not firm, and is not in place, which seriously limits the widespread use of fixed IUDs.

The purpose of the present invention is to provide a novel fixed IUD placer, which can strictly control the insertion of a fixed IUD (such as the IUD involved in the ZL92227292 patent application) into the fundus muscle of the uterus. The depth of the layer ensures that the fixed part of the fixed IUD is implanted in the myometrium, improves the fixation rate of the fixed IUD in the myometrium, and can effectively prevent the traditional placer from easily causing the uterus during operation. Problems such as perforation, weak fixation of the IUD, not in place, etc., and the placement operation is simple and easy to learn, easy to master, and quick to operate, which is conducive to the popularization and use of the fixed IUD.

The specific embodiment of the present invention is: this novel fixed type IUD placer comprises outer casing 1, the placing needle 2 that is positioned at the outer casing 1 and the connecting rod 3 that links to each other with placing needle 2 and handle part 4, and it is characterized in that the handle The part 4 is composed of an outer cylinder 5 and a propelling rod 6 located in the cavity of the outer cylinder 5. The front end of the outer cylinder 5 communicates with the outer sleeve 1, and the rear end is open; The front ends of the propelling rod 6 are connected, and the rear part of the propelling rod 6 passes through the tail opening of the outer tube 5, and the exposed length is equal to the depth at which the needle tip of the needle 2 is designed to penetrate into the bottom of the uterus; at the front end of the propelling rod 6 There is a tension spring 7 at the connection with the connecting rod 3, the tension spring 7 surrounds the tail of the connecting rod 3, one end of which is fixed to the front end of the push rod 6, and the other end is suspended in the air and prevents the narrow gap formed by the communication between the outer cylinder 5 and the outer sleeve 1. place; on one side of the front part of the push rod 6, there is a clamping groove 8 formed by an oblique opening, and there is an oblong or circular or half-shaped pipe wall part of the outer cylinder 5 corresponding to the clamping groove 8. The backguy hole 9 that circular opening constitutes; The outer front end of handle portion 4 also can have the climbing head 10 that is the curved sheet shape that is easy to hold by two fingers; There are sliding posts 11 that are made of rectangular protrusions to prevent the stay wire hole 9 on the needle 2 and the push rod from shifting during the advancing process. Corresponding chute 12; There can be crown 13 on the afterbody of the propelling rod 6 that passes out from the afterbody opening of urceolus 5.

The novel fixed IUD placement device provided by the present invention can strictly control the insertion depth of the fixed IUD into the myometrium of the fundus of the uterus due to the adoption of a structure for controlling the advancing distance, thereby ensuring the fixation of the fixed IUD. The knot part is implanted in a certain position in the myometrium to improve the fixation rate of the fixed IUD in the myometrium, which can effectively prevent the traditional placer from easily causing uterine perforation, IUD fixation is not firm, not in place, etc. problem, can effectively prevent falling off, and the placement operation is simple and easy to learn, easy to master, and quick to operate, which is conducive to popularization and use of the fixed intrauterine device.

The present invention will be further described below in conjunction with specific examples.

Fig. 1 is a structural diagram of an embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of an embodiment of the present invention.

Fig. 3 is a sectional view taken along line A-A' of Fig. 2 .

Fig. 4 is a structural view of a fixed intrauterine device suitable for placement by the placement device provided by the present invention.

The names of the parts indicated by the leads in the figure are:

1——outer casing

2 - Placing the needle

3 - connecting rod

4——Handle

5——outer cylinder

6——Push rod

7——tension spring

8——Clamp groove

9——Guard wire hole

10——Climbing the head

11 - sliding column

12 - chute

13 - Crown

14 - positioning block

15 - fixed knot

16——Spinning wire

17 - copper ring

18 - tail silk

19——Tail wire fixing line

Example

This novel fixed IUD placer includes an outer sleeve 1, a placement needle 2 positioned in the outer sleeve 1, a connecting rod 3 connected to the placement needle 2, and a handle portion 4. The propelling rod 6 in the cavity is formed, and the front end of the outer cylinder 5 is connected with the outer tube 1, and the rear end is open; The rear part passes through the tail opening of the outer cylinder 5, and the exposed length is equal to the designed depth of the needle point of the placement needle 2 piercing into the bottom of the uterus; there is a tension spring 7 at the connection between the front end of the push rod 6 and the connecting rod 3 , the tension spring 7 surrounds the tail of the connecting rod 3, one end of which is fixed to the front end of the push rod 6, and the other end is suspended in the air and blocked from the narrow place formed by the communication between the outer tube 5 and the outer sleeve 1; on the front side of the push rod 6 There is a clamping groove 8 formed by oblique openings, and there is a wire hole 9 formed by an oblong or circular or semicircular opening on the wall of the outer cylinder 5 corresponding to the clamping groove 8. In the handle The outer front end of part 4 also has the climbing head 10 that is the arc-shaped sheet shape that is easy to hold by two fingers; There can also be clamps for preventing the placement of needle 2 and the push rod around the outer wall of the middle rear part of the push rod 6. The thread groove 8 rotates and deviates during the advancing process so that the fixed knot on the tip of the placement needle 2 falls off and the tail wire fixed line in the thread clamp groove 8 comes out and/or the thread clamp groove 8 deviates from the pull wire hole 9 by a rectangular convex shape. Sliding column 11 and the chute 12 corresponding to sliding column 11 on the surrounding walls of the middle part inner surface of position outer cylinder 5; At the same time, the tip of the placement needle 2 is flush with the front end of the outer tube. When the 1 cm push rod 6 passing through the tail opening of the outer tube 5 is pressed, the front end of the placement needle 2 is stretched from the inside of the outer tube Out of 1 cm, that is, in actual operation, the front end of the placement needle 2 carries the fixed knot of the IUD and advances 1 cm into the myometrium. After the fork-shaped placement needle is withdrawn, the fixed knot of the IUD is left in the myometrium. A handle 13 is installed on the tail of the push rod 6 that passes through the tail opening of the outer cylinder 5. This handle 13 is only for the comfort of the handle and the improvement of the appearance during operation, and does not affect the operation of the push rod 6 and the placement needle 2. The advancing distance of time. There is a positioning block 14 made of slidable small pieces on the outside of the outer sleeve 1, and its function is to indicate the depth of the uterine cavity on the outer sleeve 1, so as to control the depth of the placer inserted into the uterine cavity during operation, so that it can be accurately placed. to the bottom of the uterus. The placement needle of the present invention is made of stainless steel, and the rest of the parts are made of non-toxic plastic materials.

When in use, put the fixed knot at the front end of the fixed IUD on the fork-shaped structure at the top of the needle, pull up the tail to make the fixed IUD straight along the connecting rod, and then clip the tail silk fixing wire on the In the clamping groove, after fixing and connecting the outer casing, the outer cylinder and the climbing head, pull out the free end of the tail wire fixed wire fixed in the clamping groove from the cable hole to the outside of the cable hole, put the handle on it, and In this state, it can be used by professional doctors after disinfection. When the top of the outer cannula reaches the bottom of the uterus, push the handle with the thumb of your right hand. At this time, the fixed knot enters the myometrium, and then pulls the free end of the tail wire fixed wire outside the pull wire hole to make it from the clip wire. Then release the thumb of the right hand. The front part of the placement needle that has entered the myometrium will retract automatically due to the return of the tension spring, and will be separated from the fixed knot of the IUD inserted into the myometrium, and the fixed knot will be left in the At a depth of 1 cm in the myometrium, when the front end of the placement needle returns to the outer cannula, slowly withdraw from the placement device, and the placement of the fixed IUD is completed.

Claims (9)

1. A fixed IUD placement device, comprising an outer sleeve (1), a placement needle (2) located in the outer sleeve (1), a connecting rod (3) connected to the placement needle (2) and a handle portion (4 ), which is characterized in that the handle part (4) is composed of an outer cylinder (5) and a push rod (6) located in the cavity of the outer cylinder (5), the front end of the outer cylinder (5) communicates with the outer sleeve (1), and the rear The end is open-shaped; the lumen diameter and the outer diameter of the outer cylinder (5) are respectively greater than the inner lumen diameter and the outer diameter of the outer sleeve (1), and the inner lumen diameter and the outer diameter of the outer cylinder (5) are closer to the outer cylinder (5) ) and the connecting part of the outer tube (1) begin to shrink gradually, until the connection between the outer tube (5) and the outer tube (1), the inner cavity diameter and outer diameter of the outer tube (5) shrink to the point where the outer tube (1) The inner cavity diameter and the outer diameter are consistent to form a narrow place; the rear part of the connecting rod (3) extends into the outer cylinder (5) and is connected with the front end of the push rod (6), and the rear part of the push rod (6) is connected with the front end of the outer cylinder The tail opening of (5) passes through, and the length that it exposes is equal to the depth that the needle point of the placement needle (2) is designed to penetrate into the bottom of the uterus; there is a connecting rod (3) at the front end of the push rod (6) Tension spring (7), the tension spring (7) surrounds the tail of the connecting rod (3), one end of which is fixed to the front end of the push rod (6), and the other end is suspended in the air and prevented from being connected to the outer tube (5) and the outer sleeve (1) The narrow place formed by the pass; on the front side of the push rod (6), there is a clamping groove (8) composed of oblique openings, and in the tube of the outer cylinder (5) corresponding to the clamping groove (8) There are wire holes (9) formed by oblong or circular or semicircular openings on the wall. 2. The fixed IUD placement device according to claim 1, characterized in that there are two arc-shaped sheet-shaped climbing heads (10) on the outer front end of the handle part (4) which are easy to hold by fingers. 3. The fixed IUD placement device according to claim 1 or 2, characterized in that there are pins around the outer wall of the middle rear part of said push rod (6) to prevent placement of the needle (2) and the push rod. The clamping groove (8) rotates and deviates from the sliding column (11) made of rectangular protrusions during the advancing process and the sliding column (11) on the surrounding walls of the middle inner side of the outer cylinder (5). Corresponding chute (12). 4. The fixed IUD placement device according to claim 1 or 2, characterized in that the rear part of said push rod (6) passes through the tail opening of the outer cylinder (5) and the exposed length is 1 cm . 5. The fixed IUD placement device according to claim 3, characterized in that the exposed length of the rear portion of the push rod (6) passing through the tail opening of the outer cylinder (5) is 1 cm. 6. The fixed IUD placement device according to claim 1 or 2, characterized in that there is a crown (13) on the tail of the push rod (6) passing through the tail opening of the outer cylinder (5). 7. The fixed IUD placement device according to claim 3, characterized in that there is a crown (13) on the tail of the push rod (6) passing through the tail opening of the outer cylinder (5). 8. The fixed IUD placement device according to claim 4, characterized in that there is a crown (13) on the tail of the push rod (6) passing through the tail opening of the outer cylinder (5). 9. The fixed IUD placement device according to claim 5, characterized in that there is a handle (13) on the tail of the push rod (6) passing through the tail opening of the outer cylinder (5).

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