Intrauterine device ring removing device

Abstract

The invention discloses an intrauterine device ring taking device, and relates to the technical field of obstetrics and gynecology instruments. The measuring unit comprises a plurality of clamp teeth hinged to the inside of the clamp head, a pull wire which penetrates through the inside of the clamp head and the inside of the clamp handle and makes contact with the clamp teeth, a pull part fixed to the end of the pull wire, and a first spring arranged outside the pull wire in a sleeving mode. The intrauterine device has the beneficial effects that accurate identification and feedback indication of a grabbed target material are realized through the matching between the forceps teeth arranged in the jaw and the pull wire and by utilizing the characteristic difference of the counter-acting force of the hard intrauterine device and the soft uterus tissue on the forceps teeth.

Description

Technical Field

[0001] The present invention relates to the technical field of gynecological and obstetric instruments, in particular to an IUD removal device. Background Art

[0002] Contraceptive devices (IUDs) in modern clinical use primarily include T-shaped copper IUDs, O-rings, and Genie rings. IUD removal, a routine gynecological procedure, is used to remove various types of IUDs placed within the uterine cavity. Modern IUD removal procedures utilize preoperative CT imaging to assess IUD position and risk of incarceration. A probe is used to measure uterine cavity depth to determine the operative range. For IUDs with tail strings, traction is preferred. When the tail string breaks, retracts, or is lost due to extended IUD placement, instrumented removal using forceps is necessary. Furthermore, extended IUD placement is common in clinical practice. Due to patients' lack of understanding of the appropriate timeframe for placement, the IUD material deteriorates and its structural integrity deteriorates, increasing the risk of breakage. While preoperative imaging can identify most abnormalities, some cases still encounter unexpected resistance during removal. Forceps, the primary tool used in these situations, require complex procedures, including target location, material identification, and safe removal, without direct visualization of the uterine cavity. Existing ring removal forceps mainly use a traditional clamp structure, and the operator relies on preoperative imaging information, clinical experience and operating feel to make a comprehensive judgment. However, the accuracy of this judgment method is significantly affected by the limitations of the instrument design.

[0003] The main problems during the IUD removal operation will focus on two key issues: unclear tactile feedback and control of operation depth. Due to the structural characteristics of the long lever arm, the existing IUD removal forceps significantly weaken the operator's ability to perceive the material properties of the grasping target. The tactile difference between the hard IUD and the soft uterine tissue during the clamping process is masked by the mechanical transmission loss, making it difficult for the operator to accurately distinguish the nature of the grasping target. This difficulty in material identification makes it easy for the operator to perform repeated hooking and clamping actions in the uterine cavity, and even accidentally clamp or pull the uterine tissue, which not only increases the risk of endometrial tearing injury, but in severe cases may cause uterine perforation and accidental injury to adjacent organs such as the intestine, leading to life-threatening complications such as intestinal rupture, intestinal fistula, and septic shock. At the same time, the existing IUD removal forceps lack objective control means for the operation depth. The operator mainly relies on subjective judgment to control the depth of the instrument entering the uterine cavity. Even if the uterine cavity depth has been measured by a probe before the operation, there is a lack of real-time depth reference standards in actual operation, which increases the risk of operating the instrument beyond the safe range. In addition, when uterine tissue is accidentally clamped, the existing jaw structure cannot provide an effective pressure relief mechanism, and continuous clamping pressure may aggravate the degree of tissue damage. Summary of the Invention

[0004] In view of the above problems or problems existing in the 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 technology.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: an IUD removal device, 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 column by a hinge column; a measuring unit disposed within each of the pliers heads; the measuring unit comprising a plurality of pliers teeth hingedly connected to the interior of the pliers heads, a traction line extending through both the pliers heads and the interior of the pliers handle and in contact with the pliers teeth, a traction portion fixed to an end of the traction line, and a first spring sleeved on the exterior of the traction line; The indicating unit includes an indicating portion adjacent to one side of the traction portion.

[0007] As a preferred embodiment of the IUD removal device of the present invention, the clamp head includes a tooth cavity opened on one side thereof, and a plurality of limiting rods and hinge rods fixed inside the tooth cavity; The limiting rods and the hinge rods are alternately arranged and linearly distributed along the tooth cavity opening.

[0008] As a preferred embodiment of the IUD removal device of the present invention, the clamp handle includes a telescopic cavity opened therein, and an indicator cavity communicated with the telescopic cavity; the indicator cavity is communicated with the outside.

[0009] As a preferred embodiment of the IUD removal device of the present invention, the clamp teeth include engaging teeth and spring sheets fixed on the surfaces of the clamp teeth facing away from the engaging teeth; the traction line passes through the spring sheets; a gap is left between the two groups of clamp teeth and they are symmetrically distributed.

[0010] As a preferred embodiment of the IUD removal device of the present invention, the clamp teeth further include auxiliary teeth adjacent to one side of the engaging teeth; One end of the pulling wire is fixedly connected to the end of the clamp head, and the other end extends to the telescopic cavity.

[0011] As a preferred solution of the IUD removal device of the present invention, the indicator cavity includes a working groove and an indicator groove connected to the working groove through a through hole; the indicator groove is connected to the outside.

[0012] As a preferred embodiment of the IUD removal device of the present invention, the traction portion includes a connecting rod and a round roller fixed to the surface of the connecting rod; The indicating portion includes an extended range cable, an indicating column fixed to the extended range cable, and a second spring sleeved on an outer wall of the extended range cable; The range-extending line is fixedly connected to the inner wall of the working groove and passes through the through hole to be fixedly connected to the indicator column; the range-extending line bypasses the circular roller.

[0013] As a preferred embodiment of the IUD removal device of the present invention, the traction portion includes a conductive block; The indicating part includes a power supply and an indicator light connected to the power supply; The conductive block is connected to the indicator light via a wire; the power supply is connected to the indicator light via a wire.

[0014] As a preferred solution of the IUD removal device of the present invention, the outer surface of the clamp body is provided with scale lines.

[0015] Beneficial effects of the present invention: The present invention realizes accurate identification and feedback indication of the target material to be grasped through the cooperation between the built-in teeth of the jaws and the traction line, and utilizes the characteristic difference between the reaction force of the hard contraceptive device and the soft uterine tissue on the teeth of the jaws; at the same time, the inverted teeth formed by the deflection of the teeth after clamping the contraceptive device can significantly enhance the gripping effect and reliability of the contraceptive device; in addition, the gap reserved between the double rows of teeth can protect the soft tissue, avoiding excessive compression damage when the soft tissue is accidentally clamped, and the scale line of the position of the handle can provide an objective control reference for the operation depth, effectively reducing the risk of tearing damage to the endometrium and myometrium, uterine perforation and accidental injury to other organs after perforation during the ring removal operation, and avoiding the occurrence of serious complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is an overall three-dimensional view of the present invention.

[0018] Figure 2 It is an overall perspective view of the present invention.

[0019] Figure 3 For the present invention Figure 2 A partial enlarged view of point A in the figure.

[0020] Figure 4 This is a diagram showing the positional relationship between the measuring unit and the indicating unit of the present invention.

[0021] Figure 5 It is an overall exploded view of the present invention.

[0022] Figure 6 For the present invention Figure 5 A partial enlarged view of point B.

[0023] Figure 7 For the present invention Figure 5 A partial enlarged view of point C.

[0024] Figure 8 Schematic diagram of other embodiments of the traction part and the indicator part of the present invention.

[0025] In the figure: 1. Clamp body; 11. Clamp head; 12. Clamp handle; 13. Articulated column; 2. Measuring unit; 21. Clamp teeth; 22. Pull line; 23. Pull part; 24. First spring; 3. Indicator unit; 31. Indicator part; 111. Tooth cavity; 112. Limit rod; 113. Articulated rod; 121. Telescopic cavity; 122. Indicator cavity; 1221. Working groove; 1222. Indicator groove; 211. Engaging teeth; 212. Shrapnel; 213. Auxiliary teeth; 231a. Connecting rod; 232a. Round roller; 311a. Range extension line; 312a. Indicator column; 313a. Second spring; 231b. Conductive block; 311b. Power supply; 312b. Indicator light; 4. Scale line. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Reference Figures 1 to 8 This embodiment provides an IUD removal device, which includes a clamp body 1, which includes a clamp head 11 and a clamp handle 12; the clamp body 1 is a pair and is fixed along the axis of the hinge column 13 by a hinge column 13; The measuring unit 2 is disposed within each pliers head 11 and includes a plurality of teeth 21 hingedly connected to the pliers head 11, a traction wire 22 that passes through both the pliers head 11 and the handle 12 and contacts the teeth 21, a traction portion 23 fixed to the end of the traction wire 22, and a first spring 24 sleeved on the outside of the traction wire 22. The indicating unit 3 includes an indicating portion 31 adjacent to one side of the traction portion 23 .

[0030] Furthermore, the pliers head 11 includes a tooth cavity 111 opened on one side thereof, and a plurality of limiting rods 112 and hinge rods 113 fixed inside the tooth cavity 111; The limiting rods 112 and the hinge rods 113 are alternately arranged and linearly distributed along the opening of the tooth cavity 111 .

[0031] Furthermore, the pliers handle 12 includes a telescopic cavity 121 provided therein, and an indicating cavity 122 communicating with the telescopic cavity 121 ; the indicating cavity 122 is communicated with the outside.

[0032] Furthermore, the teeth 21 include engaging teeth 211 and spring pieces 212 fixed to the surface of the teeth 21 facing away from the engaging teeth 211 ; the traction line 22 passes through the spring piece 212 ; a gap is left between the two groups of teeth 21 and they are symmetrically distributed.

[0033] Furthermore, the forceps teeth 21 further include auxiliary teeth 213 adjacent to one side of the engaging teeth 211; One end of the pulling wire 22 is fixedly connected to the end of the clamp head 11 , and the other end extends to the telescopic cavity 121 .

[0034] Furthermore, the indicating chamber 122 includes a working groove 1221 and an indicating groove 1222 communicating with the working groove 1221 via a through hole; the indicating groove 1222 is communicated with the outside.

[0035] Furthermore, the traction portion 23 includes a connecting rod 231a and a round roller 232a fixed to the surface of the connecting rod 231a; The indicator portion 31 includes an extended range line 311a, an indicator post 312a fixed to the extended range line 311a, and a second spring 313a sleeved on the outer wall of the extended range line 311a. The range-extending line 311 a is fixedly connected to the inner wall of the working groove 1221 , and passes through the through hole and is fixedly connected to the indicator column 312 a ; the range-extending line 311 a passes around the round roller 232 a .

[0036] Furthermore, the traction portion 23 includes a conductive block 231b; The indicator unit 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.

[0037] In an embodiment provided in the present application, the pliers body 1 is composed of two parts: a pliers head 11 and a pliers handle 12. The two pliers bodies 1 are centrally symmetrical and are simultaneously penetrated by a hinged column 13, so that the two can be fixed in the axial direction of the hinged column 13. The opening and closing of the pliers handle 12 can realize the opening and closing of the pliers head 11 for intrauterine ring removal.

[0038] Existing IUD removal forceps usually use long handles. The reason is that, first, the uterine cavity is deep, and the distance from the uterine fundus to the external cervical os of most patients is 6-9 cm; second, the cervical os is narrow. Even if it is dilated to a diameter of 6.5mm-7mm before surgery, the size of the opening and closing of the forceps head will be limited. Therefore, the length of the forceps handle needs to meet the needs of deep uterine cavity operation.

[0039] However, since the forceps handle is too long, the lever arm will also increase significantly. Therefore, this lever arm structure produces a significant signal attenuation effect during the mechanical transmission process, thereby weakening the medical staff's perception during the intraoperative clamping process.

[0040] When the forceps clamp different targets, the micromechanical differences are transmitted over long distances and cannot be accurately perceived by the operator's hands. This results in the hard clamping feel of the hard IUD and the soft characteristics of the soft uterine tissue presenting similar resistance feedback at the handle end.

[0041] This fuzzy tactile information makes it impossible for the operator to accurately distinguish the material properties of the grasped target. When faced with uncertain tactile feedback, the operator often resorts to repeated clamping and multi-point exploration to try to confirm the nature of the target. However, this blind repetitive operation significantly increases the probability of mis-clamping the endometrium and myometrium tissue. Each incorrect clamping action may cause tissue tearing damage, and the accumulated trauma can lead to common complications such as postoperative bleeding and infection.

[0042] What is more serious is that when the operator mistakenly judges soft tissue as the target of the IUD and applies traction, it may cause uterine perforation, thereby creating a serious risk of exacerbating damage to important organs such as the intestines in the abdominal cavity, and then causing intestinal rupture, peritonitis, infectious shock, etc., endangering the patient's life.

[0043] Preferably, the clamping surfaces of the two pliers heads 11 are disposed facing each other, and each clamping surface is provided with a tooth cavity 111 for accommodating each tooth 21. A plurality of limiting rods 112 and hinge rods 113 are fixed near the opening inside the tooth cavity 111 and are distributed linearly along the clamping surface. The limiting rods 112 and hinge rods 113 are alternately distributed.

[0044] The hinged rod 113 is used to install each pliers tooth 21, and the two form a fit between them. The pliers tooth 21 can deflect circumferentially around the fitted hinged rod 113, and the limiting rod 112 presses against the surface of the pliers tooth 21 away from the position of the hinged rod 113, and is used to limit the deflection of the pliers tooth 21 to prevent the pliers tooth 21 from going out of the tooth cavity 111.

[0045] Preferably, a spring piece 212 is fixed on the side of the pliers tooth 21 facing away from the opening of the tooth cavity 111. The spring piece 212 always presses against the bottom of the corresponding side tooth cavity 111. When the pliers tooth 21 is deflected by force, the spring piece 212 will be compressed to deform. When the external force disappears, the deformation of the spring piece 212 disappears, thereby restoring the pliers tooth 21. When the pliers tooth 21 is not affected by external force or the external force is insufficient, the spring piece 212 will not deform.

[0046] Angular engaging teeth 211 are located where the teeth 21 protrude from the tooth cavity 111. When the forceps head 11 grips the IUD, the teeth 21 deflect accordingly. After this deflection, the engaging teeth 211 passively deflect, forming an inverted tooth shape. The vertical grooves on the clamping surface of traditional jaws increase the roughness of the contact surface, thereby increasing the coefficient of friction. When the IUD is subjected to axial tension, the friction is parallel and opposite to the direction of the tension, making it prone to slippage when the static friction limit is reached.

[0047] The inverted teeth formed by the deflection of the engaging teeth 211 under the pressure of the hard contraceptive device achieve a fundamental change in the constraint mechanism from a mechanical point of view. The engaging teeth 211 will form a wedge-shaped locking relationship with the surface of the contraceptive device, that is, converting pure friction constraint into mechanical locking constraint. The greater the pulling force, the tighter the bite.

[0048] The hook structure formed by the inverted teeth geometrically prevents axial movement of the IUD. Even in conditions with reduced friction, such as when the IUD surface and jaws are slippery due to the intrauterine environment, the mechanical lock maintains effective restraint, significantly reducing the risk of accidental dislodgment during operation. This is particularly suitable for addressing the potential resistance to incarceration during IUD removal.

[0049] In a preferred embodiment provided in the present application, auxiliary teeth 213 are further provided on the portion of the forceps teeth 21 exposed from the tooth cavity 111. The auxiliary teeth 213 are adjacent to the engaging teeth 211 and are smaller in height than the engaging teeth 211. The auxiliary teeth 213 do not work when the engaging teeth 211 are under pressure until the engaging teeth 211 form an inverted tooth shape. Then, the auxiliary teeth 213 participate in the mechanical locking of the contraceptive device, enhance the clamping effect, and disperse the stress during the clamping process, especially to prevent the risk of breakage of the aging contraceptive device.

[0050] Preferably, during the process of clamping the IUD, no matter what posture or shape the IUD is in, since each tooth 21 can work independently, a mechanical locking constraint can be formed for the part of the IUD clamped by the clamp, and for the part of the IUD that is not wrapped, the remaining teeth 21 can wrap the edge of the IUD to prevent it from falling off during the process of withdrawing the clamp.

[0051] In a preferred embodiment provided in this application, referring to Figure 6 As can be seen in the figure, the outer wall portion of the forceps teeth 21, including the positions of the engaging teeth 211 and the auxiliary teeth 213, is provided with a circumferential groove, so that the middle position of the engaging teeth 211 and the auxiliary teeth 213 is cut off, thereby deriving an additional angle. The angle derived from the groove can lock the contraceptive device in the axial direction of the hinge rod 113, which can prevent the contraceptive device from slipping in the axial direction of the hinge rod 113 during the removal process.

[0052] Preferably, when the two clamp heads 11 are closed, the teeth 21 have a gap d between them and are symmetrically distributed. Since soft tissue will deform during clamping, which is different from the force applied to a hard IUD, the gap d has safety value from a protection perspective.

[0053] When the forceps head 11 accidentally clamps the endometrium or myometrium, the soft tissue undergoes plastic deformation under the compressive force, and its volume redistributes, with the solid portion migrating to the area with less pressure. If the forceps head 11 does not retain the gap d and adopts a completely closed design, the clamped soft tissue will bear the full compressive force of the forceps teeth 21, causing a sharp increase in local stress, which can easily cause irreversible damage such as tissue necrosis, vascular rupture, and nerve damage.

[0054] The gap d can provide a deformation buffer space for the compressed soft tissue. When the soft tissue is clamped, it avoids excessive concentration of stress at the contact point and allows the soft tissue to release excess pressure by occupying the space created by the gap d after reaching its elastic deformation limit. Even if the operator continues to apply clamping force, the actual compressive stress on the soft tissue will not increase indefinitely. At the same time, the existence of the gap d also prevents the shearing effect of the jaws on the soft tissue. Traditional gapless jaws will generate shear stress on the soft tissue surface when fully closed. Even if a window is opened at the jaw position, it will cause tissue tearing. The gap d can convert the shear effect into a relatively mild squeezing effect.

[0055] Therefore, due to its incompressible nature, a rigid IUD cannot undergo plastic deformation to accommodate the gap space like soft tissue. Therefore, the presence of gap d does not affect the effective clamping of the IUD, and the teeth 21 can still deflect normally under the reaction force of the hard surface of the IUD to form a reverse tooth lock. The above differentiated action of the teeth 21 ensures that the device can provide both reliable clamping of hard targets and effective protection of soft tissue, minimizing the risk of iatrogenic injury during mis-clamping operations.

[0056] Preferably, the traction wire 22 starts from the end of the pliers head 11, passes through the tooth cavity 111 and penetrates into the pliers handle 12. One end of the traction wire 22 is fixedly connected to the tip of the pliers head 11, and the other end extends from the pliers handle 12 to the telescopic cavity 121. The portion of the traction wire 22 in the tooth cavity 111 is in contact with the surface of each pliers tooth 21 on one side facing the bottom of the tooth cavity 111, and passes through each spring piece 212. When the pliers tooth 21 deflects, it compresses the traction wire 22 and causes it to be pulled accordingly. It should be noted that the traction wire 22 in this embodiment needs to have a certain rigidity.

[0057] In a preferred embodiment provided in the present application, in order to ensure that the smoothness of the pulling process of the traction line 22 can be improved, a waist-shaped hole needs to be 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 causing a certain tooth 21 to deflect, thereby hindering the other teeth 21 from pressing and pulling the traction line 22.

[0058] In one embodiment provided in the present application, a telescopic cavity 121 is provided inside the clamp handle 12, and one end of the traction wire 22 is retained therein. The telescopic cavity 121 is used to accommodate the traction part 23, and the indicator cavity 122 is also provided inside the clamp handle 12, which is respectively connected to the telescopic cavity 121 and the outside world, and is used to accommodate the indicator part 31.

[0059] Preferably, the indicator cavity 122 is composed of a working groove 1221 and an indicator groove 1222, respectively. The working groove 1221 is opened on one side of the telescopic cavity 121, and the two are connected. The traction line 22 is retained in the telescopic cavity 121, and its end is fixedly connected to the connecting rod 231a. A first spring 24 is also sleeved between the connecting rod 231a and the bottom of the telescopic cavity 121. Therefore, the first spring 24 can force the connecting rod 231a to pull the traction line 22 to the distal end and straighten it, so that the traction line 22 can be reset after being compressed by the teeth 21. It should be noted that the first spring 24 and the connecting rod 231a always move along the axis of the telescopic cavity 121.

[0060] At this time, a portion of the connecting rod 231a is exactly in the working groove 1221, and the distal end of the connecting rod 231a is against the side wall of the working groove 1221. A round roller 232a is also fixed on the side wall of the connecting rod 231a.

[0061] Preferably, the circular roller 232a may be a pulley type, which can significantly reduce the frictional resistance between the circular roller 232a and the range extending line 311a.

[0062] In addition, indicator groove 1222 is located on the other side of working groove 1221, and the two are connected. An extended-range cable 311a is also fixed to the side wall of working groove 1221 where connecting rod 231a abuts. Extended-range cable 311a winds from one side of roller 232a to the other, creating close contact between the two. The other end of extended-range cable 311a passes through indicator groove 1222 and is fixedly connected to the end face of indicator post 312a. A second spring 313a is also sleeved between the end face of indicator groove 1222 and indicator post 312a. This second spring 313a is used to push indicator post 312a toward the distal end and tighten the extended-range cable 311a.

[0063] Preferably, the range extender 311a can double the length of the pull line 22 when the pull line 22 is compressed and pulled. Because the jaws 21 are small and have a limited deflection angle, the pull line 22 is pulled a short distance when compressed, potentially resulting in a less pronounced pulling effect on the indicator post 312a. Therefore, the range extender 311a is required to improve the displacement of the indicator post 312a.

[0064] Reference Figure 4 It can be seen that the indicator groove 1222 is partially connected to the outside world, and the indicator column 312a is immersed in the indicator groove 1222. Only when the forceps teeth 21 compress the traction line 22, the indicator column 312a will be pulled to the part of the indicator groove 1222 that is partially connected to the outside world, which is the position of the second spring 313a in this embodiment.

[0065] Optionally, the outer wall of the indicator column 312a can be coated with a high-gloss paint, or the indicator column 312a can be made into a transparent column and filled with a fluorescent reagent to indicate that the indicator column 312a is in communication with the outside world. Due to the effect of the extended range line 311a, the indicator column 312a is easier for the operator to observe.

[0066] Optionally, double range extension can be achieved by the round roller 232a and the range extension line 311a, and multiple range extension can be achieved by winding the range extension 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.

[0067] Therefore, when the forceps head 11 clamps an object, the operator can observe the indicator column 312a from one side of each forceps handle 12 to see whether it is pulled to the part of the indicator groove 1222 that is connected to the outside world, so as to distinguish whether the clamped object is soft tissue or an IUD.

[0068] In one embodiment provided in this application, referring to Figure 8, which is a schematic diagram of electronic indication. A telescopic cavity 121 is defined within the handle 12, in which one end of the pull wire 22 is retained. The telescopic cavity 121 is used to accommodate the traction portion 23. An indication cavity 122 is also defined within the handle 12, communicating with the telescopic cavity 121 and the outside world, and is used to accommodate the indication portion 31.

[0069] Preferably, the traction wire 22 is retained in the telescopic cavity 121, and its end is fixedly connected to the conductive block 231b. A first spring 24 is also provided between the conductive block 231b and the bottom of the telescopic cavity 121. Therefore, the first spring 24 can force the conductive block 231b to pull the traction wire 22 to the distal end and be straightened, so that the traction wire 22 can be reset after being compressed by the teeth 21. It should be noted that the first spring 24 and the conductive block 231b always move along the axial direction of the telescopic cavity 121.

[0070] An indicator cavity 122 is provided on one side of the telescopic cavity 121, and the two are connected. When the conductive block 231b is pulled in the telescopic cavity 121 for axial movement, the edge of the conductive block 231b can also move in the indicator cavity 122. A power supply 311b and an indicator light 312b are fixed inside the indicator cavity 122, and the indicator light 312b is located in the part of the indicator cavity 122 that is connected to the outside world. The indicator light 312b is connected to the power supply 311b and the conductive block 231b respectively through wires, and the other pole of the power supply 311b is aligned with the conductive block 231b. When the conductive block 231b moves axially, it can contact the other pole of the power supply 311b, thereby forming a conductive path.

[0071] Therefore, when the traction wire 22 is compressed and pulled, the first spring 24 is compressed, the other pole of the power supply 311b contacts the conductive block 231b and turns on the circuit, and the indicator light 312b turns on at this moment, otherwise it turns off. The observer can more intuitively distinguish whether the clamped object is soft tissue or an IUD.

[0072] In the above, the pulling action of the traction line 22 is controlled by the state of the pliers teeth 21 clamping different objects, and the pulling action will directly change the indication state of the indication part 31 through the traction part 23, so that the operator can clearly judge the type of object clamped by the pliers head 11.

[0073] Reference Figures 1 to 5 The present embodiment provides an IUD removal device capable of marking the depth of the uterine cavity, comprising a clamp body 1, the outer surface of which is provided with scale lines 4. Specifically, the surface of the clamp handle 12 is provided with scale lines 4.

[0074] During IUD removal surgery, the actual distance from the external cervical os to the uterine fundus is measured using a uterine probe to provide an objective distance parameter for the device removal procedure. However, during the procedure, the operator combines the distance parameter provided by the uterine probe with subjective experience to estimate the insertion depth of the device. However, due to individual differences in uterine anatomy and pathological conditions, this can lead to deviations in the procedure.

[0075] Therefore, in the absence of an objective depth reference, the operator is likely to over-advance the IUD removal forceps to search for the target object. At this time, the forceps head 11 may exceed the safety range of the uterine cavity and penetrate the uterine myometrium. Since the uterine cavity is a blind operation environment, the operator cannot intuitively perceive that the instrument has penetrated the uterine wall. Especially for patients with thin uterine walls or pathological softening, the resistance change caused by the perforation is extremely weak and difficult to be perceived in time. Once uterine perforation occurs, the forceps head 11 may mistakenly grab the intestines, omentum and other abdominal organs after entering the abdominal cavity. When the operator mistakenly believes that the contraceptive device has been clamped and applies traction, it will cause serious complications such as intestinal rupture and massive abdominal bleeding. The patient is in danger of life and needs to undergo immediate laparotomy and repair surgery, which greatly increases the complexity of treatment and medical risks.

[0076] Therefore, a scale line 4 is set on the clamp handle 12, which allows the operator to make marks on the corresponding scale position according to the probe measurement results, thereby providing a visual reference and a safety limit for operation, ensuring that the depth of the ring removal forceps entering the uterine cavity is always controlled within a safe range. Even when looking for an IUD that is difficult to locate, the scale line 4 can be used to constrain it to prevent the instrument from exceeding the boundary of the uterine cavity.

[0077] Scale line 4 can transform subjective depth judgment into objective quantitative control, fundamentally eliminating the risk of uterine perforation caused by misjudgment of depth, and providing reliable safety protection for IUD removal operations.

[0078] In summary, the present invention realizes accurate identification and feedback indication of the target material to be grasped through the cooperation between the built-in teeth of the jaws and the traction line, and utilizes the characteristic differences between the reaction force of the hard contraceptive device and the soft uterine tissue on the teeth of the jaws; at the same time, the inverted teeth formed by the deflection of the teeth after clamping the contraceptive device can significantly enhance the gripping effect and reliability of the contraceptive device; in addition, the gap reserved between the double rows of teeth can protect the soft tissue, avoiding excessive compression damage when the soft tissue is accidentally clamped, and the scale line of the handle position can provide an objective control reference for the operation depth, effectively reducing the risk of tearing damage to the endometrium and myometrium, uterine perforation and accidental injury to other organs after perforation during the ring removal operation, and avoiding the occurrence of serious complications.

[0079] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention 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 invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A contraceptive device removal device, characterized by: include, A pliers body (1), the pliers body (1) comprising a pliers head (11) and a pliers handle (12); the pliers body (1) is a pair and is fixed in the direction of the axis of the hinged column (13) via a hinged column (13); A measuring unit (2) is provided inside each of the pliers heads (11); the measuring unit (2) comprises a plurality of pliers teeth (21) hingedly connected to the inside of the pliers head (11), a traction line (22) simultaneously passing through the inside of the pliers head (11) and the pliers handle (12) and in contact with the pliers teeth (21), a traction portion (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 indicating unit (3) comprises an indicating portion (31) adjacent to one side of the traction portion (23).

2. The IUD removal device according to claim 1, wherein: The pliers head (11) comprises a tooth cavity (111) opened on one side thereof, and a plurality of limiting rods (112) and hinge rods (113) fixed inside the tooth cavity (111); The limiting rods (112) and the hinge rods (113) are alternately arranged and linearly distributed along the opening of the tooth cavity (111).

3. The IUD removal device according to claim 2, characterized in that: The pliers handle (12) comprises a telescopic cavity (121) provided therein, and an indication cavity (122) in communication with the telescopic cavity (121); the indication cavity (122) is in communication with the outside.

4. The IUD removal device according to claim 3, wherein: The pliers teeth (21) include engaging teeth (211) and spring pieces (212) fixed to the surfaces of the pliers teeth (21) in a direction opposite to the engaging teeth (211); the traction line (22) passes through the spring piece (212); a gap is left between the two groups of pliers teeth (21) and they are symmetrically distributed.

5. The IUD removal device according to claim 4, characterized in that: The pliers teeth (21) further include an auxiliary tooth (213) adjacent to one side of the engaging tooth (211); One end of the pulling wire (22) is fixedly connected to the end of the clamp head (11), and the other end extends to the telescopic cavity (121).

6. The IUD removal device according to claim 5, characterized in that: The indicating cavity (122) comprises a working groove (1221) and an indicating groove (1222) communicating with the working groove (1221) via a through hole; the indicating groove (1222) is in communication with the outside world.

7. The IUD removal device according to claim 6, characterized in that: The traction portion (23) comprises a connecting rod (231a) and a round roller (232a) fixed to the surface of the connecting rod (231a); The indicating portion (31) comprises an extended range line (311a), an indicating column (312a) fixed to the extended range line (311a), and a second spring (313a) sleeved on the outer wall of the extended range line (311a); The range-extending line (311a) is fixedly connected to the inner wall of the working groove (1221), and passes through a through hole and is fixedly connected to the indicator column (312a); the range-extending line (311a) passes around the circular roller (232a).

8. The IUD removal device according to claim 5, characterized in that: The traction portion (23) includes a conductive block (231b); The indicating portion (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; and the power supply (311b) is connected to the indicator light (312b) via a wire.

9. The IUD removal device according to any one of claims 1 to 8, characterized in that: The outer surface of the pliers body (1) is provided with scale lines (4).

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