An intrauterine device tail wire cutter

Abstract

The present invention provides an intrauterine device tail wire cutter, which includes a pair of knife bodies and a rotating shaft. The rear end part of the knife body is a handle part, and the front end part of the knife body includes a first rod section, a second rod section, and an elastic deformation member that are hinged to each other. The first rod section under the drive of an external force compresses and actuates the elastic deformation member and rotates around the hinge point of the first rod section and the second rod section; a clamping member is provided at the end of the first rod section away from the second rod section, and the clamping member is set to protrude from the main body plane. The two clamping members on the pair of knife bodies clamp the tail wire in a direction perpendicular to the main body plane; a blade with a cutting edge line is provided at the end of the second rod section close to the first rod section, and the blade is set to protrude from the main body plane and is on the same side of the main body plane as the clamping member. The two blades on the pair of knife bodies cut the tail wire in a direction perpendicular to the main body plane. The present invention can complete the quantitative cutting of the intrauterine device tail wire and has the advantage of convenient use.

Description

Technical Field

[0001] The present invention relates to medical scissors, and more particularly to a tail wire scissor for intrauterine contraceptive devices. Background Art

[0002] An intrauterine contraceptive device is a contraceptive device placed in the uterine cavity. Since most of the initial devices used were ring-shaped, they are usually called intrauterine contraceptive devices, also known as intrauterine devices, abbreviated as IUDs. Most of the current IUDs have tail wires, such as T-shaped IUDs, GyneFix IUDs, etc., and they can be removed by pulling the tail wire, which has the advantage of convenient removal.

[0003] However, for IUDs with tail wires, attention needs to be paid to the length of the tail wire. If it is too long, it will cause discomfort to women, and if it is too short, it will not achieve the effect of facilitating removal. In the prior art, scissors are directly used to cut the tail wire of the IUD. The length of the retained tail wire mainly depends on the doctor's visual inspection and experience, and the length of the tail wire cannot be guaranteed. For inexperienced or novice doctors, it is difficult to cut it in place at one time, which also causes pain to the wearer. In addition, during the process of cutting the tail wire, it is easy to pull the tail wire, resulting in loosening and shaking of the IUD.

[0004] Therefore, it is necessary to provide a pair of scissors that can stably cut the tail wire while retaining a fixed length of the tail wire. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a tail wire scissor for intrauterine contraceptive devices, which clamps the tail wire through a clamping member and then quantitatively cuts the tail wire through a blade.

[0006] The specific technical solution of the present invention is as follows:

[0007] A tail wire scissor for intrauterine contraceptive devices, used for cutting the tail wire of an intrauterine contraceptive device, comprising:

[0008] A pair of blade bodies;

[0009] A rotating shaft that integrally combines the pair of blade bodies freely and defines a main plane of rotation for the pair of blade bodies;

[0010] Wherein,

[0011] The rear end portion of the blade body is a handle portion;

[0012] The front end portion of the blade body includes a first rod segment, a second rod segment that are hinged to each other, and an elastic deformation member located on the first rod segment and / or the second rod segment. The first rod segment under the action of an external force compresses and actuates the elastic deformation member and rotates around the hinge point of the first rod segment and the second rod segment;

[0013] A clamping member is provided at the end of the first rod section away from the second rod section. The clamping member is arranged to protrude from the main body plane. The two clamping members on the pair of knife bodies clamp the tail wire in a direction perpendicular to the main body plane.

[0014] A blade with a cutting edge is provided at the end of the second rod section close to the first rod section. The blade is arranged to protrude from the main body plane and is on the same side of the main body plane as the clamping member. The two blades on the pair of knife bodies cut the tail wire in a direction perpendicular to the main body plane.

[0015] Before the two clamping members on the pair of knife bodies abut against each other and the first rod section and the second rod section rotate relative to each other, there is a gap between the two blades for the tail wire to pass through.

[0016] Preferably, the clamping surface of the clamping member has a notch. When the two clamping members abut against each other, the notch forms a closed circle, ellipse, rhombus, trapezoid or triangle for the tail wire to pass through.

[0017] Preferably, a sawtooth strip or an elastic rubber strip is provided on the clamping surface of the clamping member to clamp the tail wire.

[0018] Preferably, the height distance that the clamping member protrudes from the main body plane is not less than the height distance that the blade protrudes from the main body plane.

[0019] Preferably, the first rod section is a straight rod. Under the drive of an external force, the first rod section compresses and actuates the elastic deformation member and rotates around the hinge point of the first rod section and the second rod section. The two blades on the pair of knife bodies cooperate to cut the tail wire.

[0020] Preferably, in the main body plane, the distance between the clamping member and the blade is 1 cm to 2 cm.

[0021] In order to further realize the ability to adjust the length of the remaining tail wire, preferably, the second rod section is provided with a groove and a connecting shaft located in the groove. The first rod section has a connecting piece that can extend into the groove and is pivotally connected to the connecting shaft. The elastic deformation member is placed in the groove and restricts the rotation of the first rod section when there is no external force.

[0022] Furthermore, the groove has at least an end face opening facing the first rod section and a side face opening located outside the first rod section and the second rod section.

[0023] Furthermore, the second rod section has a notch that cooperates with the connecting shaft. The notch is a continuous groove or an intermittent hole.

[0024] Furthermore, the connecting shaft penetrates through the notch and a locking nut is provided at the protruding end thereof to lock the connecting shaft into the notch.

[0025] The present invention has the following beneficial effects:

[0026] The tail wire cutter of the present invention first clamps the tail wire, then rotates the holding handle to the first rod section, and then cuts the tail wire with the blade. The whole clamping and cutting process has high smoothness and is convenient to use.

[0027] The present invention can also adjust the relative distance between the blade and the clamping member, thereby changing the length of the remaining tail wire and improving the versatility of the tail wire cutter of the present invention.

[0028] The following further details the present invention with reference to the accompanying drawings. Description of the Drawings

[0029] The present invention can be better understood in conjunction with the accompanying drawings. The drawings are only for illustrative purposes, not drawn to scale, and not a limitation on the scope of protection of the present invention, wherein:

[0030] Figure 1 is a schematic diagram of the overall structure of the intrauterine device tail wire cutter of the present invention;

[0031] Figure 2 is a schematic diagram of the structure of the intrauterine device tail wire cutter of the present invention in a non-operating state;

[0032] Figure 3 is Figure 2 a schematic diagram of the mating state of the front end portion of the tool body;

[0033] Figure 4 is a schematic diagram of the structure of the intrauterine device tail wire cutter of the present invention in the first-stage clamping state;

[0034] Figure 5 is Figure 4 a schematic diagram of the mating state of the front end portion of the tool body;

[0035] Figure 6 is a schematic diagram of the structure of the intrauterine device tail wire cutter of the present invention in the second-stage cutting state;

[0036] Figure 7 is Figure 6 a schematic diagram of the mating state of the front end portion of the tool body;

[0037] Figure 8 is a schematic diagram of the structure at the connection between the first rod section and the second rod section of the intrauterine device tail wire cutter of the present invention;

[0038] Figure 9 is Figure 8 an exploded schematic diagram. Detailed Embodiments

[0039] Example 1

[0040] An intrauterine device tail wire cutter for cutting the tail wire of an intrauterine device, as Figure 1As shown in FIGS. -9, it includes a left cutter body 10, a right cutter body 20, and a rotating shaft 30. The left cutter body 10 and the right cutter body 20 are paired, and are integrally combined freely through the rotating shaft 30. The plane where the left cutter body 10 and the right cutter body 20 are located during rotation is the main body plane.

[0041] The structural forms of the left cutter body 10 and the right cutter body 20 in the present invention are basically the same. The cutter body is divided into a rear end part and a front end part. The rear end part is a handle part that can be held by a human hand; the front end part is the main part for the work to be carried out and is the main innovation point of the present invention.

[0042] In this example, the left cutter body 10 is taken as an example to elaborate on the structure, and the specific introduction is as follows;

[0043] The front end part of the left cutter body 10 includes a first rod segment 11 and a second rod segment 12. The first rod segment 11 is a straight rod, and the second rod segment 12 is a fully inward curved arc rod. The first rod segment 11 and the second rod segment 12 are hinged, and an elastic pressing piece 13 is provided at the hinge joint between the two. Without external force, there will be no relative rotation between the first rod segment 11 and the second rod segment 12, and the first rod segment 11 can open or close along with the second rod segment 12.

[0044] See Figure 3 , a clamping member 14 is provided on the first rod segment 11. The clamping member 14 protrudes from the first rod segment 11 and is arranged in a direction perpendicular or nearly perpendicular to the main body plane, and it is located at the end of the first rod segment 11 away from the second rod segment 12.

[0045] A blade 15 is provided on the second rod segment 12. The blade 15 protrudes from the second rod segment 12 and is arranged in a direction perpendicular or nearly perpendicular to the main body plane, and is on the same side of the main body plane as the clamping member 14. It is located at the end of the second rod segment 12 close to the first rod segment 11.

[0046] The working state change of the tail wire cutter of the present invention is as shown in Figure 2 , Figure 4 , Figure 6 . After the intrauterine device is installed, during the process of cutting the tail wire, by externally holding the handle parts 16 and 26 of the tail wire cutter, different states are switched to cut the tail wire. As shown in Figure 4 , when the clamping members 14 on the left cutter body 10 and the clamping members 24 on the right cutter body 20 are in contact with each other, the tail wire is clamped. At this time, there is a gap between the blades 15 and the blades 25 through which the tail wire can pass; further hold the handle parts 16 and 26 tightly, as shown in Figure 6As shown, the first rod segments 11 of the left knife body 10 and the first rod segments 21 of the right knife body 20 rotate against the action of the elastic force. Through the shearing action between the blades 15 and 25, the tail wire clamped by the clamping members 14 and 24 is cut off, and a certain length of the tail wire is retained.

[0047] After the tail wire is cut off, when the external forces on the handles 16 and 26 of the tail wire cutter are removed, under the action of the restoring force of the elastic pressing piece 13, the first rod segments 11 of the left knife body 10 and the first rod segments 21 of the right knife body 20 both return to the initial state.

[0048] In a preferred example of the present invention, a sawtooth rack or an elastic rubber strip may be provided on the clamping surfaces of the clamping members 14 and 24 to clamp the tail wire and prevent the tail wire from shaking. Correspondingly, in other examples of the present invention, notches 17 and 27 may also be provided on the clamping surfaces of the clamping members 14 and 24. When the clamping members 14 and 24 are abutted against each other, the notches form a closed circle, ellipse, rhombus, trapezoid or triangle for the tail wire to pass through, so as to facilitate adjusting the clamping position and avoid multiple clampings during a single cutting process.

[0049] In the present invention, the height distances of the clamping members and the blades protruding from the main body plane are within a suitable size range, such as 0.5 cm - 1.0 cm, and the cutting edges of the blades are protected by the surrounding body for safe use. Among them, the height distance of the clamping members protruding from the main body plane is preferably set to be not less than the height distance of the blades protruding from the main body plane. For example, the height distance of the clamping members protruding from the main body plane is 1.0 cm, and the height distance of the blades protruding from the main body plane is 0.8 cm.

[0050] Normally, the reserved length of the tail wire of the intrauterine device is 1 cm - 2 cm. Correspondingly, the distance between the clamping members and the blades can be designed to be 1 cm - 2 cm to facilitate cutting out a suitable length of the tail wire.

[0051] Example 2

[0052] An intrauterine device tail wire cutter for cutting off the tail wire of an intrauterine device, as Figure 1 -9 shows, on the basis of Embodiment 1, an adjusting device 40 is provided between the first rod segment 11 and the second rod segment 12. The adjusting device is specifically arranged as follows:

[0053] A groove 41 and a connecting shaft 42 located in the groove 41 are provided on the second rod segment 12. The first rod segment 11 includes a connecting piece 43 that can extend into the groove 41 and is pivotally connected to the connecting shaft 42. The elastic pressing piece 13 is placed in the groove 41 and restricts the rotation of the first rod segment 11 when there is no external force driving.

[0054] See Figure 8, Figure 9 The slot 41 has at least an end face opening 41a and an inner side face opening 41b. The end face opening 41a is for the connecting piece 43 to pass through, and the inner side face opening 41b is for installing the elastic pressing piece 13.

[0055] A notch 44 communicating with the slot 41 and cooperating with the connecting shaft 42 is provided on the second rod section 12. The notch 44 is a continuous notch to continuously adjust the position of the first rod section 11 relative to the second rod section 12 within the length of the slot, that is, to reserve the length of the cut-off tail wire.

[0056] The connecting shaft 42 can be a bolt, which penetrates through the notch 44, and a locking nut is provided at the protruding end thereof to lock the connecting shaft 42 into the notch 44.

[0057] Furthermore, a detachable screw 45 is provided at a position of the slot 41 close to its end face opening 41a, which is used as a limiting member to limit the rotation angle of the first rod section 11.

[0058] In other preferred examples of the present invention, the connecting shaft 42 can also adopt Figure 9 the way of the shaft sleeve 42a and the locking bolt 42b shown in

[0059] to better adjust the position of the connecting shaft 42. Among them, step structures 44a are provided on the inner and outer surfaces at the notch 44. The inner step structure forms a sliding groove for guiding the connecting shaft sleeve, and the outer step structure forms a sliding groove for guiding the locking bolt, so as to enhance the stability of the structure after locking the position of the first rod section 11.

[0060] Although the present invention is disclosed above with preferred embodiments, it is not intended to limit the scope of the present invention. Any ordinary technician in the art can make some improvements without departing from the scope of the present invention. That is, all equivalent improvements made in accordance with the present invention should be covered by the scope of the present invention.

Claims

1. An intrauterine device tail wire cutter for cutting the tail wire of an intrauterine device, comprising: A pair of knife bodies; A rotating shaft that integrally combines the pair of knife bodies freely, and the pair of knife bodies defines the main plane of its rotation; Wherein, The rear end part of the knife body is a handle part; The front end part of the knife body includes a first rod segment, a second rod segment that are hinged to each other, and an elastic deformation member located on the first rod segment and / or the second rod segment. The first rod segment under the action of an external force compresses and actuates the elastic deformation member, and rotates around the hinge point of the first rod segment and the second rod segment; A clamping member is provided at the end of the first rod segment away from the second rod segment. The clamping member is set to protrude from the main plane. The two clamping members on the pair of knife bodies clamp the tail wire in a direction perpendicular to the main plane; A blade with a cutting edge line is provided at the end of the second rod segment close to the first rod segment. The blade is set to protrude from the main plane and is on the same side of the main plane as the clamping member. The two blades on the pair of knife bodies cut the tail wire in a direction perpendicular to the main plane; Before the two clamping members on the pair of knife bodies abut against each other and the first rod segment and the second rod segment rotate relative to each other, there is a gap between the two blades for the tail wire to pass through.

2. The intrauterine device tail wire scissors according to claim 1, characterized in that, The clamping surface of the clamping member has a notch. When the two clamping members abut against each other, the notch forms a closed circle, ellipse, rhombus, trapezoid or triangle for the tail wire to pass through.

3. The intrauterine device tail wire cutter according to claim 1, wherein, A sawtooth strip or an elastic rubber strip is provided on the clamping surface of the clamping member to clamp the tail wire.

4. The intrauterine device tail wire cutter according to claim 1, characterized in that, The height distance that the clamping member protrudes from the main plane is not less than the height distance that the blade protrudes from the main plane.

5. The intrauterine device tail wire cutter according to claim 1, characterized in that, The first rod segment is a straight rod. The first rod segment under the action of an external force compresses and actuates the elastic deformation member, and rotates around the hinge point of the first rod segment and the second rod segment. The two blades on the pair of knife bodies cooperate to cut the tail wire.

6. The intrauterine device tail wire cutter according to claim 5, characterized in that, In the main plane, the distance between the clamping member and the blade is 1 cm to 2 cm.

7. The intrauterine device tail wire cutter according to any one of claims 1-6, characterized in that, The second rod segment is provided with a groove and a connecting shaft located in the groove. The first rod segment has a connecting piece that can extend into the groove and is pivotally connected to the connecting shaft. The elastic deformation member is placed in the groove and restricts the rotation of the first rod segment when there is no external force.

8. The intrauterine device tail wire cutter according to claim 7, characterized in that, The groove has at least an end face opening facing the first rod segment and a side opening located inside the first rod segment and the second rod segment.

9. The intrauterine device tail wire scissors according to claim 7, characterized in that, The second rod segment has a notch that cooperates with the connecting shaft. The notch is a continuous groove or an intermittent hole.

10. The intrauterine device tail wire cutter according to claim 9, characterized in that, The connecting shaft penetrates through the notch, and a locking nut is provided at the protruding end thereof to lock the connecting shaft into the notch.

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