An intrauterine device retriever

Abstract

The application discloses a device for taking out an IUD, and relates to the technical field of gynecological instruments, comprising a measuring unit arranged in each jaw; the measuring unit comprises a plurality of jaw teeth hingedly connected to the interior of the jaw, a traction line penetrating through the interior of the jaw and the handle and being in contact with the jaw teeth, a traction part fixed to the end of the traction line, and a first spring sleeved on the outside of the traction line. The device has the beneficial effect that the cooperation between the jaw teeth arranged in the jaw and the traction line, and the characteristic difference between the reaction force of the hard IUD and the soft uterine tissue on the jaw teeth are utilized to realize the accurate identification and feedback indication of the target material.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gynecological instruments, and particularly relates to a device for taking out an intrauterine device. BACKGROUND

[0002] Modern clinical application of intrauterine devices mainly includes T-shaped copper-containing intrauterine devices, O-shaped metal rings and Jini rings. As a routine operation technology in gynecology, intrauterine device removal is used to remove various types of intrauterine devices placed in the uterine cavity. In modern clinical operation, the position of the intrauterine device and the risk of embedding are evaluated by CT imaging examination before the operation, the depth of the uterine cavity is measured by using a probe to determine the operation range, and the tail wire is preferentially selected for the tail wire of the intrauterine device. When the tail wire is broken, retracted or the intrauterine device is placed for a long time, the tail wire is lost, and the device is used to remove the device. In addition, the phenomenon of long-term placement of intrauterine devices is common in clinical practice. Due to the lack of understanding of the placement time limit of patients, the material of the intrauterine device ages and the structural integrity decreases, and the risk of breakage is high. Although preoperative imaging examination can identify most abnormal conditions, some cases still encounter unexpected resistance during actual operation. As the main tool for handling such situations, the intrauterine device removal forceps need to complete the complex operation process of target positioning, material judgment and safe removal in the uterine cavity without direct vision. The existing intrauterine device removal forceps mainly adopt the traditional clamp structure, and the operator relies on preoperative imaging information, clinical experience and operation feeling for comprehensive judgment, but the accuracy of this judgment method is significantly affected by the limitations of the device design.

[0003] The main problems in the operation process of the intrauterine device are concentrated on the two key problems of unclear tactile feedback and operation depth control. Due to the structural characteristics of the long force arm of the existing intrauterine device removal forceps, the operator's perception ability of the material characteristics of the grasped target is significantly weakened. The tactile difference between the hard intrauterine device and the soft uterine tissue in the clamping process is covered up by the mechanical transmission loss, so that the operator cannot accurately distinguish the nature of the grasped target. This difficulty in material identification makes the operator easily perform repeated hooking and clamping actions in the uterine cavity, and even misclamps and pulls the uterine tissue, which not only increases the risk of endometrial tear injury, but also may cause uterine perforation and injury to adjacent organs such as the intestinal canal in severe cases, thereby causing intestinal rupture, intestinal fistula, septic shock and other life-threatening serious complications. At the same time, the existing intrauterine device removal forceps lack objective control means for the operation depth, and the operator mainly relies on subjective judgment to control the depth of the device into the uterine cavity. Even if the depth of the uterine cavity has been measured by the probe before the operation, there is still a lack of real-time depth reference standard in the actual operation, which increases the risk of device operation beyond the safe range. In addition, when the uterine tissue is misclamped, the existing clamp structure cannot provide an effective pressure relief mechanism, and the continuous clamping pressure may increase the degree of tissue damage. SUMMARY

[0004] In view of the problems existing in the above or prior art, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide an IUD removal device that can solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a device for removing an IUD, comprising a clamp body, the clamp body comprising a clamp head and a clamp handle; the clamp bodies are a pair and are fixed along the axis of the hinge post by means of a hinge post;

[0007] A measuring unit is disposed inside each of the pliers heads; the measuring unit includes a plurality of pliers teeth hinged to the inside of the pliers head, a traction line that passes through the inside of both the pliers head and the pliers handle and contacts the pliers teeth, a traction part fixed to the end of the traction line, and a first spring sleeved on the outside of the traction line.

[0008] The indicating unit includes an indicating section adjacent to the side of the traction section.

[0009] As a preferred embodiment of the IUD removal device of the present invention, the clamp head includes a toothed cavity opened on one side thereon, and a plurality of limiting rods and hinge rods fixed inside the toothed cavity;

[0010] The limiting rod and the hinge rod are arranged alternately and linearly distributed along the opening of the tooth cavity.

[0011] In a preferred embodiment of the IUD removal device of the present invention, the clamp handle includes a telescopic cavity formed therein and an indicator cavity communicating with the telescopic cavity; the indicator cavity is in communication with the outside.

[0012] As a preferred embodiment of the IUD removal device of the present invention, the clamp teeth include biting teeth and spring pieces fixed to the surface of the clamp teeth facing away from the biting teeth; the traction line passes through the spring pieces; and the two sets of clamp teeth are spaced apart and symmetrically distributed.

[0013] In a preferred embodiment of the IUD removal device of the present invention, the clamp teeth further include auxiliary teeth adjacent to the side of the occlusal teeth;

[0014] One end of the traction line is fixedly connected to the end of the clamp head, and the other end extends to the telescopic cavity.

[0015] In a preferred embodiment of the IUD removal device of the present invention, the indicator cavity includes a working groove and an indicator groove communicating with the working groove through a through hole; the indicator groove is in communication with the outside.

[0016] As a preferred scheme of the intrauterine device taking device, the traction part comprises a connecting rod and a round roller fixed to the surface of the connecting rod.

[0017] The indication part comprises an extension line, an indication column fixed to the extension line, and a second spring sleeved on the outer wall of the extension line.

[0018] The extension line is fixedly connected with the inner wall of the working groove and is fixedly connected with the indication column through the through hole; the extension line bypasses the round roller.

[0019] As a preferred scheme of the intrauterine device taking device, the traction part comprises a conductive block.

[0020] The indication part comprises a power supply and an indication lamp connected with the power supply.

[0021] The conductive block is connected with the indication lamp through a wire; the power supply is connected with the indication lamp through a wire.

[0022] As a preferred scheme of the intrauterine device taking device, the outer surface of the clamp body is provided with a scale line.

[0023] The beneficial effects of the present application are as follows: through the cooperation between the built-in clamp teeth and the traction line in the clamp mouth, and by utilizing the characteristic difference of the reaction force of the hard intrauterine device and the soft uterine tissue on the clamp teeth, the accurate identification and feedback indication of the target material are realized; at the same time, the inverted teeth formed by the deflection of the clamp teeth after clamping the intrauterine device can significantly enhance the clamping effect and reliability of the intrauterine device; in addition, the gap reserved between the double rows of clamp teeth can protect the soft tissue and avoid excessive compression damage when the soft tissue is mistakenly clamped, and the scale line at the position of the clamp handle can provide an objective control reference for the operation depth, effectively reducing the risk of endometrial and muscle layer tearing damage, uterine perforation and misinjury of other organs after perforation during the taking operation, and avoiding the occurrence of serious complications. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 It is a three-dimensional view of the whole application.

[0026] Figure 2 It is a perspective view of the whole application.

[0027] Figure 3 It isFigure 2 A local enlarged view of the A in FIG.

[0028] Figure 4 A position relationship diagram of the measuring unit and the indicating unit of the present application.

[0029] Figure 5 A whole exploded view of the present application.

[0030] Figure 6 A whole exploded view of the present application. Figure 5 A local enlarged view of the B in FIG.

[0031] Figure 7 A whole exploded view of the present application. Figure 5 A local enlarged view of the C in FIG.

[0032] Figure 8 A schematic view of other embodiments of the traction part and the indicating part of the present application.

[0033] In the figure: 1, plier body; 11, plier head; 12, plier handle; 13, hinged column; 2, measuring unit; 21, plier teeth; 22, traction line; 23, traction part; 24, first spring; 3, indicating unit; 31, indicating part; 111, tooth cavity; 112, limiting rod; 113, hinged rod; 121, telescopic cavity; 122, indicating cavity; 1221, working groove; 1222, indicating groove; 211, occlusion tooth; 212, elastic sheet; 213, auxiliary tooth; 231a, connecting rod; 232a, round roller; 311a, range increasing line; 312a, indicating column; 313a, second spring; 231b, conductive block; 311b, power supply; 312b, indicating light; 4, scale line. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0035] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other different ways from the description, and those skilled in the art can make similar generalizations without departing from the concept of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0036] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or selectively excludes other embodiments.

[0037] Reference is made to Figures 1-8The embodiment provides a device for taking out an intrauterine device, which comprises a clamp body 1, the clamp body 1 comprises a clamp head 11 and a clamp handle 12; the clamp body 1 is in a pair, and is fixed along the direction of the axis of a hinge column 13 through the hinge column 13;

[0038] A measuring unit 2 is arranged in each clamp head 11; the measuring unit 2 comprises a plurality of clamp teeth 21 hinged in the clamp head 11, a traction line 22 penetrating the inside of the clamp head 11 and the clamp handle 12 and being in contact with the clamp teeth 21, a traction part 23 fixed at the end of the traction line 22, and a first spring 24 sleeved outside the traction line 22;

[0039] An indicating unit 3 comprises an indicating part 31 adjacent to one side of the traction part 23.

[0040] Further, the clamp head 11 comprises a tooth cavity 111 arranged on one side of the clamp head 11, and a plurality of limiting rods 112 and hinge rods 113 fixed in the tooth cavity 111;

[0041] The limiting rods 112 and the hinge rods 113 are alternately arranged and linearly distributed along the opening of the tooth cavity 111.

[0042] Further, the clamp handle 12 comprises a telescopic cavity 121 arranged in the inside of the clamp handle 12, and an indicating cavity 122 in communication with the telescopic cavity 121; the indicating cavity 122 is in communication with the outside.

[0043] Further, the clamp tooth 21 comprises a bite tooth 211, and an elastic sheet 212 fixed on the surface of the clamp tooth 21 in the direction away from the bite tooth 211; the traction line 22 penetrates the elastic sheet 212; a gap is left between two groups of the clamp teeth 21 and the two groups of the clamp teeth 21 are symmetrically distributed.

[0044] Further, the clamp tooth 21 further comprises an auxiliary tooth 213 adjacent to one side of the bite tooth 211;

[0045] One end of the traction line 22 is fixedly connected with the end of the clamp head 11, and the other end extends to the telescopic cavity 121.

[0046] Further, the indicating cavity 122 comprises a working groove 1221, and an indicating groove 1222 in communication with the working groove 1221 through a through hole; the indicating groove 1222 is in communication with the outside.

[0047] Further, the traction part 23 comprises a connecting rod 231a, and a round roller 232a fixed on the surface of the connecting rod 231a;

[0048] The indicating part 31 comprises a range increasing line 311a, an indicating column 312a fixed with the range increasing line 311a, and a second spring 313a sleeved outside the outer wall of the range increasing line 311a;

[0049] The lengthening line 311a is fixedly connected with the inner wall of the working groove 1221 and is fixedly connected with the indicating column 312a through the through hole; the lengthening line 311a bypasses the round roller 232a.

[0050] Further, the traction part 23 includes a conductive block 231b;

[0051] The indicating part 31 includes a power supply 311b and an indicating lamp 312b connected with the power supply 311b;

[0052] The conductive block 231b is connected with the indicating lamp 312b through a wire; the power supply 311b is connected with the indicating lamp 312b through a wire.

[0053] In an embodiment provided in the present application, the clamp body 1 is composed of two parts of a clamp head 11 and a clamp handle 12, the two clamp bodies 1 are centrally symmetrical and are penetrated by a hinge column 13 at the same time, so that the two clamp bodies can be fixed in the axial direction of the hinge column 13, and the opening and closing of the clamp head 11 is realized by the opening and closing of the clamp handle 12, so as to take out the intrauterine ring.

[0054] The existing ring taking clamp usually adopts a long handle, because firstly the uterine cavity is deep, and the distance from the uterine fundus to the external orifice of the cervix of most patients is 6-9 cm; secondly, the cervical orifice is narrow, and even if it is expanded to a diameter of 6.5 mm-7 mm before the operation, the size of the opening and closing of the clamp head part will be limited, so the length of the clamp handle needs to meet the needs of deep uterine cavity operation.

[0055] However, since the long handle will greatly increase the moment arm, such a moment arm structure will produce a significant signal attenuation effect in the process of mechanical transmission, so it will cause the perception of the medical staff to be weakened during the clamping process in the operation.

[0056] When the clamp head clamps different targets, the micro mechanical difference is transmitted through a long distance, and when it reaches the operator's hand, it cannot be accurately perceived, so that the hard clamping touch of the hard contraceptive ring and the soft characteristics of the soft uterine tissue present similar resistance feedback at the handle end.

[0057] The blurring of such tactile information causes the operator to be unable to accurately distinguish the material properties of the grasped target, and when facing uncertain tactile feedback, the operator often adopts the way of repeated clamping and multi-point exploration to try to confirm the target properties, but such blind repeated operation significantly increases the probability of mistakenly clamping the endometrium and muscle layer tissue, and each erroneous clamping action may cause tissue tearing and damage, and the cumulative trauma may cause common complications such as postoperative bleeding and infection.

[0058] More seriously, when the operator mistakenly judges the soft tissue as the contraceptive ring target and applies a pulling force, it may cause uterine perforation, thereby producing a serious risk of aggravating the damage of important organs such as intestinal canal in the abdominal cavity, and then causing intestinal rupture, peritonitis, septic shock and other life-threatening conditions.

[0059] Preferably, the clamping surfaces of the two jaws 11 are oppositely distributed, and the clamping surfaces are provided with tooth cavities 111 for accommodating the respective pliers teeth 21. Inside the tooth cavities 111, near the openings, a plurality of limiting rods 112 and hinged rods 113 are fixed, which are linearly distributed along the clamping surfaces.

[0060] The hinged rods 113 are used to mount the respective pliers teeth 21, and the two form a fit, so that the pliers teeth 21 can be circumferentially deflected around the fitted hinged rods 113, and the limiting rods 112 abut against the surface of the pliers teeth 21 away from the hinged rods 113, for limiting the deflection of the pliers teeth 21 and preventing the pliers teeth 21 from exceeding the tooth cavities 111.

[0061] Preferably, on the side of the pliers teeth 21 away from the openings of the tooth cavities 111, a spring piece 212 is also fixed, which always abuts against the bottom of the corresponding side tooth cavity 111, and when the pliers teeth 21 are deflected by force, the spring piece 212 is compressed to deform, and when the external force disappears, the spring piece 212 returns to its original shape to reset the pliers teeth 21, and when the pliers teeth 21 are not subjected to external force or the external force is insufficient, the spring piece 212 does not deform.

[0062] The part of the pliers teeth 21 exposed outside the tooth cavities 111 is provided with angular engagement teeth 211, and when the jaws 11 clamp the IUD, the pliers teeth 21 will be deflected accordingly, and after deflection, the engagement teeth 211 will form inverted teeth. The vertical lines on the clamping surface of the traditional pliers are used to increase the roughness of the contact surface, thereby increasing the friction coefficient, and when the IUD is subjected to axial pulling force, the friction force is parallel and opposite to the pulling force, and it is easy to slip when the static friction force limit is reached.

[0063] The inverted teeth formed by the deflection of the engagement teeth 211 under the pressure of the hard IUD fundamentally change the constraint mechanism from a mechanical point of view, and the engagement teeth 211 form a wedge-shaped locking relationship with the surface of the IUD, i.e. the pure friction constraint is changed to a mechanical locking constraint, and the greater the pulling force, the tighter the engagement.

[0064] The hooking structure formed by the inverted teeth geometrically prevents the axial movement of the IUD, and even in the case of reduced friction coefficient, such as the wet and slippery surface of the IUD and the pliers in the uterine environment, the mechanical locking can still maintain effective constraint, greatly reducing the risk of accidental falling of the IUD during operation. It is especially suitable for dealing with the embedded resistance that may be encountered during the removal of the IUD.

[0065] In a preferred embodiment provided in the present application, the jaw tooth 21 is further provided with an auxiliary tooth 213 at the position where it exposes the tooth cavity 111. The auxiliary tooth 213 is adjacent to the occlusion tooth 211 and has a height smaller than that of the occlusion tooth 211. The auxiliary tooth 213 does not work when the occlusion tooth 211 is under pressure, but participates in the mechanical locking of the IUD when the occlusion tooth 211 forms an inverted tooth shape, thereby enhancing the clamping effect, dispersing the stress during the clamping process, and preventing the risk of rupture of the aged IUD.

[0066] Preferably, during the clamping of the IUD, the jaw tooth 21 can work independently regardless of the posture or shape of the IUD, so that the clamped part of the IUD can form a mechanical locking constraint, and the remaining jaw tooth 21 can wrap the edge of the IUD to prevent the IUD from falling off during the clamping and removal process.

[0067] In a preferred embodiment provided in the present application, referring to Figure 6 , it can be seen that the outer wall of the jaw tooth 21, including the position of the occlusion tooth 211 and the auxiliary tooth 213, is provided with a circumferential slot, so that the middle position of the occlusion tooth 211 and the auxiliary tooth 213 is truncated, thereby deriving an additional angle. The angle derived from the slot can lock the IUD in the axial direction of the hinged rod 113, thereby preventing the IUD from slipping in the axial direction of the hinged rod 113 during the removal process.

[0068] Preferably, the jaw teeth 21 on the two jaw heads 11 are symmetrically distributed with a gap d when the jaw heads 11 are closed. Since the soft tissue will deform during the clamping process, there is a difference between the stress of the hard IUD, and therefore the gap d has safety value from the perspective of protection.

[0069] When the jaw head 11 mistakenly clamps the endometrium or muscle layer tissue, the soft tissue will plastically deform under the action of pressure, and its volume will be redistributed, with the solid part migrating to the area with less pressure. If the jaw head 11 does not reserve the gap d and adopts a completely closed design, the clamped soft tissue will bear the full pressure of the jaw tooth 21, and the local stress will sharply rise, which can easily cause irreversible damage such as tissue extrusion necrosis, blood vessel rupture, and nerve damage.

[0070] The gap d can provide a deformation buffer space for the soft tissue under pressure. When the soft tissue is clamped, the excessive concentration of stress at the contact point is avoided, and the soft tissue can release the excess pressure by occupying the space constructed by the gap d after reaching its elastic deformation limit. Even if the operator continues to apply clamping force, the actual compression stress borne by the soft tissue will not increase unlimitedly. At the same time, the existence of the gap d also prevents the shearing effect of the jaw on the soft tissue. The traditional gapless jaw will generate a shearing stress on the surface of the soft tissue when it is fully closed. Even if a window is opened in the jaw position, it will cause tissue tearing, and the gap d can convert the shearing effect into a relatively mild extrusion effect.

[0071] Therefore, due to the incompressible nature of the hard IUD, it cannot plastically deform like soft tissue to adapt to the gap space, so the existence of the gap d will not affect the effective clamping of the IUD, and the jaw 21 can still normally deflect to form an inverted tooth lock under the reaction force of the hard surface of the IUD. The above differentiated action of the jaw 21 ensures that the device can provide reliable clamping for hard targets and effectively protect soft tissue, thereby minimizing the risk of iatrogenic injury in misclamping operations.

[0072] Preferably, the traction line 22 passes through the tooth cavity 111 from the end of the plier head 11 and penetrates into the plier handle 12. One end of the traction line 22 is fixedly connected to the tip of the plier head 11, and the other end extends from the plier handle 12 to the telescopic cavity 121. The part of the traction line 22 in the tooth cavity 111 is attached to the surface of each jaw 21 on the side facing the bottom of the tooth cavity 111, and penetrates through each spring piece 212. When the jaw 21 deflects, it will compress the traction line 22 and cause corresponding traction. It should be noted that the traction line 22 in this embodiment needs to have a certain rigidity.

[0073] In a preferred embodiment provided in the present application, in order to ensure that the smoothness of the traction process of the traction line 22 is improved, a waist-shaped hole is opened at the position where the spring piece 212 is penetrated by the traction line 22, to prevent the penetration hole from being too small and hindering the compression and traction of the traction line 22 by other jaws 21 when a certain jaw 21 deflects.

[0074] In an embodiment provided in the present application, a telescopic cavity 121 is opened inside the plier handle 12, and one end of the traction line 22 is placed therein. The telescopic cavity 121 is used to accommodate the traction part 23, and an indication cavity 122 is also opened inside the plier handle 12, which is in communication with the telescopic cavity 121 and the outside, respectively, and is used to accommodate the indication part 31.

[0075] Preferably, the indicating cavity 122 is composed of a working groove 1221 and an indicating groove 1222, the working groove 1221 is arranged on one side of the telescopic cavity 121 and is communicated with the indicating groove 1222. The traction line 22 is arranged in the telescopic cavity 121, the end of the traction line 22 is fixedly connected with the connecting rod 231a, and the first spring 24 is sleeved between the connecting rod 231a and the bottom of the telescopic cavity 121, so that the connecting rod 231a can be pulled to the far end by the first spring 24 and be stretched, and the traction line 22 can be reset after being pressed by the pincer tooth 21. It should be noted that the first spring 24 and the connecting rod 231a always move along the axis direction of the telescopic cavity 121.

[0076] At this time, the local part of the connecting rod 231a is just in the working groove 1221, the far end of the connecting rod 231a abuts against the side wall of the working groove 1221, and the round roller 232a is fixedly arranged on the side wall of the connecting rod 231a.

[0077] Preferably, the round roller 232a can be a pulley type, which can greatly reduce the friction resistance between the round roller 232a and the range increasing line 311a.

[0078] In addition, the indicating groove 1222 is arranged on the other side of the working groove 1221 and is communicated with the working groove 1221. The range increasing line 311a is fixedly arranged on the side wall of the working groove 1221, the range increasing line 311a is wound from one side of the round roller 232a to the other side and is in close contact with the round roller 232a, the other end of the range increasing line 311a penetrates into the indicating groove 1222 and is fixedly connected with the end surface of the indicating column 312a, and the second spring 313a is sleeved between the end surface of the indicating groove 1222 and the indicating column 312a, the second spring 313a is used for pushing the indicating column 312a to the far end and stretching the range increasing line 311a.

[0079] Preferably, the range increasing line 311a can amplify the displacement of the traction line 22 to twice the displacement of the traction line 22 when the traction line 22 is pressed and pulled. Since the size of the pincer tooth 21 is small and the angle of deflection is limited, the distance of the traction line 22 pulled is small when the traction line 22 is pressed, which may cause that the pulling effect on the indicating column 312a is not obvious, so the range increasing line 311a is needed to improve the displacement effect of the indicating column 312a.

[0080] Referring to Figure 4 It can be seen that the local part of the indicating groove 1222 is communicated with the outside, and the indicating column 312a is immersed in the indicating groove 1222, and the indicating column 312a is pulled to the position where the local part of the indicating groove 1222 is communicated with the outside only when the pincer tooth 21 presses the traction line 22, and the position of the second spring 313a in the embodiment.

[0081] Optionally, the outer wall of the indicating column 312a is coated with high-visibility paint, or the indicating column 312a is made of transparent column, and the fluorescent reagent is filled in it, which is used to indicate the situation that the indicating column 312a is at the position where the indicating groove 1222 is in communication with the outside. Due to the effect of the range-extending line 311a, the indicating column 312a is more easily observed by the operator.

[0082] Optionally, the range is doubled by the round roller 232a and the range-extending line 311a, and the range is multiplied by the winding of the range-extending line 311a on multiple round rollers 232a, at this time, the round rollers 232a need to be distributed in the movable connecting rod 231a and the fixed working groove 1221, respectively.

[0083] Therefore, when the tongs head 11 clamps the real object, the operator can observe from the side of each tongs handle 12 whether the indicating column 312a is pulled to the position where the indicating groove 1222 is partially in communication with the outside, so as to distinguish whether the clamped object is soft tissue or an IUD.

[0084] In an embodiment provided in the present application, referring to Figure 8 , a schematic diagram for indicating by electronic means. The tongs handle 12 is internally provided with a telescopic cavity 121, and one end of the traction line 22 is retained in the telescopic cavity 121. The telescopic cavity 121 is used to accommodate the traction part 23. The indicating cavity 122 is also internally provided in the tongs handle 12, and is in communication with the telescopic cavity 121 and the outside, respectively, and is used to accommodate the indicating part 31.

[0085] Preferably, the part of the traction line 22 retained in the telescopic cavity 121 is fixedly connected with the conductive block 231b at the end thereof. A first spring 24 is further sleeved between the conductive block 231b and the bottom of the telescopic cavity 121. Therefore, the conductive block 231b can be forced by the first spring 24 to pull the traction line 22 to the distal end and be straightened, so that the traction line 22 can be reset after being compressed by the tongs teeth 21. It needs to be noted that the first spring 24 and the conductive block 231b always move along the axial direction of the telescopic cavity 121.

[0086] The telescopic cavity 121 is provided with the indicating cavity 122 on one side, and the two are in communication. When the conductive block 231b is axially moved in the telescopic cavity 121, the edge of the conductive block 231b can also move in the indicating cavity 122. The indicating cavity 122 is internally fixed with a power supply 311b and an indicating lamp 312b. The indicating lamp 312b is located in the part of the indicating cavity 122 in communication with the outside. The indicating lamp 312b is connected with the power supply 311b and the conductive block 231b by wires, and the other pole of the power supply 311b is aligned with the conductive block 231b. When the conductive block 231b is axially moved, it can contact the other pole of the power supply 311b, thereby forming a conductive path.

[0087] Therefore, when the traction line 22 is pulled under pressure, the first spring 24 is compressed, the other pole of the power supply 311b is in contact with the conductive block 231b and the circuit is turned on, the indicator light 312b is bright at this moment, and vice versa. When it is turned off, the observer can more intuitively distinguish whether the clamp object is soft tissue or an IUD.

[0088] The above, by the clamp tooth 21 clamping different objects, the traction of the traction line 22 is controlled, and the traction action directly changes the indication state of the indication part 31 through the traction part 23, and then the operator can clearly judge the type of the object clamped by the clamp head 11.

[0089] Referring to Figures 1-5 The embodiment provides an IUD taking device capable of marking the depth of the uterine cavity, which comprises a clamp body 1, and a scale line 4 is arranged on the outer surface of the clamp body 1. Specifically, the scale line 4 is arranged on the surface of the clamp handle 12.

[0090] In the IUD taking operation, the actual distance from the external cervical orifice to the fundus uteri is measured in advance by using a uterine cavity probe to provide an objective distance parameter for the IUD taking operation. However, the operator combines the distance parameter given by the uterine cavity probe with subjective experience to evaluate the depth of the instrument in the operation, but due to the anatomical differences of individual uteruses and pathological state changes, the operation may be deviated.

[0091] Therefore, in the absence of an objective depth reference, the operator is prone to excessively advance the IUD taking clamp to find the target object, and at this time, the clamp head 11 may exceed the safe range of the uterine cavity and penetrate into the myometrium. Since the uterine cavity is a blind operation environment, the operator cannot directly observe that the instrument has penetrated the uterine wall, especially for patients with a thin uterine wall or pathological softening, the resistance change caused by perforation is extremely weak and difficult to be perceived in time. Once the uterine perforation occurs, the clamp head 11 may mistakenly grab the abdominal cavity organs such as the intestinal tube and omentum after entering the abdominal cavity. When the operator mistakenly believes that the IUD has been clamped and exerts a pulling force, it will cause the intestinal tube to be torn and the abdominal cavity to bleed heavily, and the patient is in danger of life, and immediate laparotomy exploration repair is required, which greatly increases the treatment complexity and medical risk.

[0092] Therefore, the scale line 4 arranged on the clamp handle 12 can enable the operator to make a mark at the corresponding scale position according to the probe measurement result, so as to provide a visual reference and a safe limit for the operation, and ensure that the depth of the IUD taking clamp entering the uterine cavity is always controlled within a safe range. Even when the IUD is difficult to position, the scale line 4 can be used for restraint to avoid the instrument exceeding the boundary of the uterine cavity.

[0093] The scale line 4 can convert the subjective depth judgment into objective quantitative control, and fundamentally eliminates the risk of uterine perforation caused by depth judgment errors, and provides reliable safety protection for the IUD taking operation.

[0094] To sum up, the present application realizes the accurate identification and feedback indication of the target material by the cooperation between the built-in jaw teeth and the traction line, and the characteristic difference of the reaction force of the hard contraceptive device and the soft uterine tissue on the jaw teeth. Meanwhile, the inverted tooth formed by the deflection of the jaw teeth after clamping the contraceptive device can significantly enhance the clamping effect and reliability of the contraceptive device. In addition, the gap reserved between the double rows of jaw teeth can protect the soft tissue and avoid excessive compression injury when the soft tissue is mistakenly clamped. The scale line at the position of the jaw handle can provide an objective control reference for the operation depth, effectively reducing the risk of endometrial and muscle layer tear injury, uterine perforation and other organ injury after perforation in the ring removal operation, and avoiding the occurrence of serious complications.

[0095] It is important to note that the above examples are merely intended to illustrate the technical solutions of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A device for removing an intrauterine device (IUD), characterized in that: include, The clamp body (1) includes a clamp head (11) and a clamp handle (12); the number of clamp bodies (1) is one pair, and they are fixed in the direction of the axis of the hinge post (13) by means of a hinge post (13); The measuring unit (2) is disposed inside each of the clamp heads (11); the measuring unit (2) includes a plurality of clamp teeth (21) hinged to the inside of the clamp head (11), a traction line (22) passing through the inside of both the clamp head (11) and the clamp handle (12) and in contact with the clamp teeth (21), a traction part (23) fixed to the end of the traction line (22), and a first spring (24) sleeved on the outside of the traction line (22); The indicator unit (3) includes an indicator (31) on the side adjacent to the traction unit (23); The pliers (11) includes a toothed cavity (111) opened on one side therein, and a plurality of limiting rods (112) and hinge rods (113) fixed inside the toothed cavity (111). The limiting rod (112) and the hinge rod (113) are arranged alternately and linearly distributed along the opening of the tooth cavity (111); The pliers (12) include a telescopic cavity (121) formed therein. The pincers (21) include bite teeth (211) and spring pieces (212) fixed to the surface of the pincers (21) facing away from the bite teeth (211); the traction line (22) passes through the spring pieces (212); there is a gap between the two sets of pincers (21) and they are symmetrically distributed; One end of the traction line (22) is fixedly connected to the end of the clamp head (11), and the other end extends to the telescopic cavity (121).

2. The IUD removal device as described in claim 1, characterized in that: The clamp handle (12) also includes an indicator cavity (122) that communicates with the telescopic cavity (121); the indicator cavity (122) is in communication with the outside.

3. The IUD removal device as described in claim 2, characterized in that: The pincers (21) also include an auxiliary tooth (213) adjacent to the side of the biting teeth (211).

4. The IUD removal device as described in claim 3, characterized in that: The indicator cavity (122) includes a working groove (1221) and an indicator groove (1222) that communicates with the working groove (1221) through a through hole; the indicator groove (1222) is in communication with the outside.

5. The IUD removal device as described in claim 4, characterized in that: The traction unit (23) includes a connecting rod (231a) and a circular roller (232a) fixed to the surface of the connecting rod (231a). The indicator (31) includes a range extender (311a), an indicator post (312a) fixed to the range extender (311a), and a second spring (313a) sleeved on the outer wall of the range extender (311a). The range extender (311a) is fixedly connected to the inner wall of the working groove (1221) and passes through the through hole to be fixedly connected to the indicator post (312a); the range extender (311a) goes around the circular roller (232a).

6. The IUD removal device as described in claim 3, characterized in that: The traction unit (23) includes a conductive block (231b); The indicator (31) includes a power supply (311b) and an indicator light (312b) connected to the power supply (311b). The conductive block (231b) is connected to the indicator light (312b) via a wire; the power supply (311b) is connected to the indicator light (312b) via a wire.

7. The IUD removal device as described in any one of claims 1 to 6, characterized in that: The outer surface of the clamp body (1) is provided with scale lines (4).

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