An umbilical cord ligation puncture needle for terminating mid-term and late-term pregnancies

Abstract

The present invention relates to an umbilical cord ligation puncture needle for terminating mid-term and late-term pregnancy, which comprises a sleeve and a rotating sleeve rotatably connected inside. A knife ring is arranged at the top of the rotating sleeve. A clamping ring is clamped inside the sleeve. A net belt, a hook and a ejector rod are movably connected inside the rotating sleeve. A hook is installed at the end of the hook. Three through holes, two large and one small, are opened inside both the rotating sleeve and the knife ring. For the umbilical cord ligation puncture needle for terminating mid-term and late-term pregnancy, by pre-setting the net belt and the hook inside, it enters the inside of the amniotic cavity with the assistance of the sleeve and the rotating sleeve. Push the net belt forward to automatically form a loop around the umbilical cord, and then push the hook forward to hook the top of the annular net belt and pull it back, pulling the front end of the net belt into the inside of the rotating sleeve. Subsequently, push the ejector rod to make it push the moving block, and then make the push rod push the cogs to expand to both sides, realizing the effect of locking the net belt and blocking the blood flow of the umbilical cord, so as to physically terminate pregnancy.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and specifically relates to an umbilical cord ligation puncture needle for terminating mid-term and late-term pregnancy. Background Art

[0002] At present, when mid-term and late-term pregnant women need to terminate pregnancy due to fetal malformations, social factors, etc., they usually adopt the method of rivanol amniocentesis injection induction of labor ± cardiac potassium chloride injection + oral mifepristone capsules. Whether the cardiac puncture of the fetus can be successful depends on factors such as the fetal posture, position, and the thickness of the pregnant woman's abdominal wall fat; if cardiac potassium chloride injection cannot be performed, simple rivanol amniocentesis injection + oral mifepristone capsules cannot ensure that the fetus stops beating before delivery. Therefore, clinically, medical staff often need to take intracranial injection of absolute ethanol or potassium chloride when the fetus is approaching delivery to ensure the death of the fetus.

[0003] Referring to relevant materials, Chinese Patent CN102429760B, a uterine placement cage for terminating pregnancy, is made of copper and has a contraceptive function; due to its isolation effect, the blastocyst cannot complete implantation on the endometrium, so it is easier to separate the blastocyst from the uterus. The operation of terminating pregnancy is simple and fast, and the bleeding during the operation is extremely small, greatly reducing the pain brought to the patient by the operation. However, this patent is mainly used for abortion operations of early pregnancy patients and cannot terminate pregnancy for fetuses that have developed to mid-term and late-term. For mid-term and late-term pregnant patients, especially those with a gestation period of 28 weeks or more, the fetus is closely connected to the uterus through the placenta. Therefore, simply inducing labor with drugs cannot achieve the purpose of promoting intrauterine fetal death and terminating pregnancy 100%. During the induction of labor, due to the smaller size of the fetus than that of a full-term fetus, the labor process progresses rapidly. If the fetus has strong vitality, survives in the uterus and the delivery is too fast, medical staff do not have time to take measures for rescue, resulting in the live birth of the induced fetus, and even the appearance of heartbeat, spontaneous breathing or crying, which will bring great psychological shadow to the parturient, forcing her to ask the medical party to continue to rescue the induced fetus out of motherly love, which will put the patient in an embarrassing situation of ethics and morality; for medical staff, they also need to bear great legal and ethical risks that may occur, and there are potential major medical disputes. In the existing medical technology, the physical termination means for mid-term and late-term pregnancy are relatively scarce, and it is impossible to effectively tighten and block the umbilical blood flow of the umbilical cord to achieve the purpose of terminating pregnancy. Therefore, a more reliable method for terminating pregnancy is needed, so an umbilical cord ligation puncture needle for terminating mid-term and late-term pregnancy is proposed in this application to solve the above problems. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides an umbilical cord ligation puncture needle for terminating mid-late pregnancy, which has the function of physically terminating pregnancy, and has the advantages of convenient operation and no harm to the surgery, solving the problem that physical means cannot be used to block the blood flow of the fetal umbilical cord in mid-late pregnancy for pregnancy termination.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solution: an umbilical cord ligation puncture needle for terminating mid-late pregnancy, including a sleeve and a rotating sleeve rotatably connected inside. A knife ring is provided at the top of the rotating sleeve. A snap ring is clamped inside the sleeve. A mesh belt, a hook and a push rod are movably connected inside the rotating sleeve. A hook is installed at the end of the hook. Three through holes, two large and one small, are opened inside the rotating sleeve and the knife ring. Two through grooves and an operation groove are opened inside the snap ring. Cutting grooves are provided at the edges of the two large through holes. A clamping and locking device is provided in the operation groove inside the snap ring.

[0008] Further, the clamping and locking device includes an adjusting rod installed inside the snap ring. A moving block is sleeved outside the adjusting rod. A push rod is connected to the outside of the moving block. Teeth are installed inside the through groove of the snap ring.

[0009] Further, four groups of reverse barbs are fixedly connected to the outside of the adjusting rod, and the reverse barbs are movably clamped with the moving block. One side of the push rod away from the moving block is fixedly connected to the teeth.

[0010] Further, pressure blocks are fixedly installed on the side of the two through grooves of the snap ring opposite to the teeth. An adaptation groove adapted to the adjusting rod is opened at the top of the push rod, and the push rod is clamped with the adjusting rod through the adaptation groove. The push rod is slidably connected to the rotating sleeve and the knife ring through a small through hole.

[0011] Further, a fixing groove is opened inside one end of the mesh belt outside the sleeve, and a deformation rib for making it arc-shaped is fixedly installed inside the fixing groove. The arc-shaped end of the mesh belt is used for hanging the umbilical cord. A moving hole is opened inside the sleeve. The rotating sleeve is movably connected to the sleeve through the moving hole.

[0012] Further, the rotating sleeve is composed of a main rod and a holding block. The length of the main rod is longer than the overall length of the sleeve. A pulling groove adapted to the hook is opened at the end of the mesh belt, and the mesh belt is clamped with the hook through the pulling groove.

[0013] Further, an adjusting block is fixedly connected to the outside of the snap ring. An activity groove is opened on the surface of the moving hole inside the sleeve, and the adjusting block is slidably connected to the sliding groove. Magnetic attraction blocks are fixedly connected to the bottoms of the activity grooves of the snap ring and the sleeve, and the two are mutually attracted through the magnetic attraction blocks.

[0014] Furthermore, the cutting groove is an arc-shaped cutting groove, and the cutter ring is integrally welded with the rotating sleeve.

[0015] Furthermore, an anti-slip sheet is fixedly connected to the outer side of the holding block of the rotating sleeve, an auxiliary groove adapted to the adjusting rod is formed inside the moving block, and the moving block is slidably connected to the outer side of the adjusting rod through the auxiliary groove in a one-way advancing manner only.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0018] The umbilical cord ligation puncture needle for terminating mid-late pregnancy enters the inner part of the amniotic cavity with the assistance of the inner pre-set mesh belt and the hook, and the mesh belt automatically forms a loop to wind around the umbilical cord by pushing forward. Then, the hook is pushed forward to hook the top of the looped mesh belt and pulled back, pulling the front end of the mesh belt into the inner side of the rotating sleeve. Subsequently, the ejector rod is pushed to drive the moving block, and then the push rod drives the cogs to expand to both sides, realizing the locking of the mesh belt and blocking the blood flow of the umbilical cord, achieving physical pregnancy termination. Then, the rotating sleeve is rotated to make the cutter ring rotate, and the mesh belt is cut through the cutting groove inside the cutter ring. Finally, the rotating sleeve is pushed to disengage its snap ring from the sleeve, overcoming the deficiencies of the prior art and improving the success rate of pregnancy termination. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural operation display diagram of the present invention;

[0020] Figure 2 It is a structural sectional view of the present invention;

[0021] Figure 3 It is a structural operation preparation diagram of the present invention;

[0022] Figure 4 It is a structural operation completion diagram of the present invention;

[0023] Figure 5 It is the structure of the present invention Figure 2 Partial enlarged view at A of the structure;

[0024] Figure 6 It is the structure of the present invention Figure 2 Partial enlarged view at B of the structure;

[0025] Figure 7 It is the top view of the cutter ring of the structure of the present invention;

[0026] Figure 8 It is the top view of the snap ring of the structure of the present invention. <UNK>

[0027] In the figure: 1 sleeve, 2 rotating sleeve, 3 mesh belt, 4 hook, 5 snap ring, 6 hanging hook, 7 knife ring, 8 umbilical cord, 9 cutting groove, 10 adjusting rod, 11 moving block, 12 push rod, 13 engaging tooth, 14 ejector rod. Specific implementation manner

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figure 1-8 , a umbilical cord ligation puncture needle for terminating mid-late pregnancy in this embodiment, includes a sleeve 1 and a rotating sleeve 2 rotatably connected inside. A knife ring 7 is fixedly installed at the top of the rotating sleeve 2. A snap ring 5 is clamped inside the sleeve 1. A mesh belt 3, a hook 4 and an ejector rod 14 are movably connected inside the rotating sleeve 2. A hanging hook 6 is fixedly installed at the end of the hook 4. Three through holes, two large and one small, are opened on the inner sides of the rotating sleeve 2 and the knife ring 7. Two through grooves and an operation groove are opened on the inner side of the snap ring 5. A clamping and locking device is fixedly installed in the operation groove on the inner side of the snap ring 5.

[0030] Among them, a fixing groove is opened inside one end of the mesh belt 3 located outside the sleeve 1, and a deformation rib for making it arc-shaped is fixedly installed inside the fixing groove. The arc-shaped end of the mesh belt 3 is used for hanging the umbilical cord 8. A moving hole is opened on the inner side of the sleeve 1. The rotating sleeve 2 is movably connected to the sleeve 1 through the moving hole. The rotating sleeve 2 is composed of a main rod and a holding block. The length of the main rod is longer than the overall length of the sleeve 1. A pulling groove adapted to the hanging hook 6 is opened at the end of the mesh belt 3, and it is clamped with the hanging hook 6 through the pulling groove. An adjusting block is fixedly connected to the outside of the snap ring 5. A sliding groove is opened on the surface of the moving hole on the inner side of the sleeve 1, and the adjusting block is slidably connected to the sliding groove. Magnetic attraction blocks are fixedly connected to the bottoms of the snap ring 5 and the moving groove of the sleeve 1, and the two are attracted to each other through the magnetic attraction blocks. The cutting groove 9 is an arc-shaped cutting groove. The knife ring 7 is integrally welded with the rotating sleeve 2. The top of the sleeve 1 is a flared opening to facilitate the installation and discharge of the snap ring 5.

[0031] In addition, before use, sleeve 1 is sleeved on the outer side of rotating sleeve 2, snap ring 5 is snapped on the inner side of sleeve 1, so that mesh belt 3 and hook 4 are inserted into the inner side of rotating sleeve 2, and their relative positions are adjusted. Subsequently, sleeve 1 is pushed into the amniotic cavity, so that the arc-shaped part of mesh belt 3 surrounds umbilical cord 8, and is combined with the front end of the arc of mesh belt 3 through hook 6 on hook 4. Then, it is retracted into snap ring 5, fastened together after passing through cutter ring 7, blocking the blood flow of umbilical cord 8, and the clamping and locking device is used to lock and fix it to prevent loosening during the operation from affecting the cutting effect. Subsequently, rotating sleeve 2 is rotated to make cutter ring 7 rotate, and mesh belt 3 is cut through cutting groove 9 inside cutter ring 7. Then, rotating sleeve 2 is pushed to push its snap ring 5 out of sleeve 1, thus completing the overall actual operation.

[0032] It should be added that deformation rib strips are arranged inside one end of mesh belt 3 located on the outer side of sleeve 1 to make it arc-shaped. The arc-shaped end of mesh belt 3 is used to bypass umbilical cord 8 to form a knot. Through the arrangement of the deformation rib strips, the preliminary shape of mesh belt 3 can be preset before the operation, so as to facilitate the winding of mesh belt 3 around umbilical cord 8 and subsequent processes when the vision is affected after entering the operation. The deformation rib strips arranged on mesh belt 3 can be replaced by the combination of sandwich fabrics in the prior art. The amount of deformation generated by the two layers of fabrics when encountering water is different. Therefore, after entering the inside of the amniotic cavity, it can automatically bend to achieve the purpose of automatically bending and winding umbilical cord 8.

[0033] Please refer to Figure 1-8 , in this embodiment, the clamping and locking device includes adjusting rod 10 fixedly installed on the inner side of snap ring 5. A moving block 11 is sleeved on the outer side of adjusting rod 10. A push rod 12 is fixedly connected to the outer side of moving block 11. A tooth 13 is fixedly installed on the inner side of the through groove of snap ring 5.

[0034] Among them, four groups of reverse barbs are fixedly connected to the outer side of adjusting rod 10, and the reverse barbs are movably clamped with moving block 11. One side of push rod 12 away from moving block 11 is fixedly connected to tooth 13. Pressing blocks are fixedly installed on the side of snap ring 5 opposite to tooth 13 in the two through grooves. An adaptation groove adapted to adjusting rod 10 is opened at the top of ejector rod 14, and ejector rod 14 is clamped with adjusting rod 10 through the adaptation groove. Ejector rod 14 is slidably connected to rotating sleeve 2 and cutter ring 7 through small through holes. Anti-slip sheets are fixedly connected to the outer side of the holding block of rotating sleeve 2. An auxiliary groove adapted to adjusting rod 10 is opened on the inner side of moving block 11, and moving block 11 is slidably connected to the outer side of adjusting rod 10 through the auxiliary groove and can only move forward and not backward.

[0035] In addition, after pulling the mesh belt 3 back into the rotating sleeve 2, push the ejector rod 14 so that its top contacts the adjusting rod 10, and then push the moving block 11. Use the push rod 12 to expand the locking teeth 13 and squeeze the mesh belt 3 to achieve overall fixation. Due to the reverse barbs on the outer side of the adjusting rod 10, accidental loosening can be well avoided, ensuring the subsequent cutting effect. Then pull out the ejector rod 14 to complete the subsequent cutting effect and also ensure the continuous tightening of the umbilical cord 8 to achieve the purpose of physically terminating pregnancy.

[0036] The working principle of the above embodiment is as follows:

[0037] (1) By internally presetting the mesh belt 3 and the hook 4, with the assistance of the sleeve 1 and the rotating sleeve 2, it enters the interior of the amniotic cavity. Push the mesh belt 3 forward to automatically form a loop and wrap around the umbilical cord 8. Then push the hook 4 forward, hook the top of the looped mesh belt 3, and pull it back to pull the front end of the mesh belt 3 into the inner side of the rotating sleeve 2. Subsequently, push the ejector rod 14 to push the moving block 11, and then the push rod 12 pushes the locking teeth 13 to expand to both sides, achieving the effect of locking the mesh belt 3 and blocking the blood flow of the umbilical cord 8, thereby achieving physical pregnancy termination. Then rotate the rotating sleeve 2 to rotate the knife ring 7, and cut the mesh belt 3 through the cutting groove 9 inside the knife ring 7. Finally, push the rotating sleeve 2 to separate its snap ring 5 from the sleeve 1, overcoming the deficiencies of the prior art and improving the success rate of pregnancy termination.

[0038] (2) It can terminate pregnancy for fetuses that have developed to the mid-late stage. Its snap ring 5 clamps and fixes the mesh belt 3, and uses the cutting groove 9 in the device to cut the mesh belt 3 to ensure the normal use of the whole and ensure pregnancy termination.

[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to this process, method, article or device. Without further limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A umbilical cord ligation puncture needle for terminating mid - to late - term pregnancy, comprising a sleeve (1) and a rotating sleeve (2) rotatably connected inside it, characterized in that: A knife ring (7) is provided at the top of the rotating sleeve (2). A snap ring (5) is clamped inside the sleeve (1). A mesh belt (3), a hook (4) and a push rod (14) are movably connected inside the rotating sleeve (2). A hanging hook (6) is installed at the end of the hook (4). Three through holes, two large and one small, are provided inside both the rotating sleeve (2) and the knife ring (7). Two through grooves and an operation groove are provided inside the snap ring (5). Cutting grooves (9) are provided at the edges of the two large through holes. A clamping and locking device is provided in the operation groove inside the snap ring (5). The clamping and locking device includes an adjusting rod (10) installed inside the snap ring (5). A moving block (11) is sleeved outside the adjusting rod (10). A push rod (12) is connected to the outside of the moving block (11). A clamping tooth (13) is installed inside the through groove of the snap ring (5). Four groups of reverse barbs are fixedly connected to the outside of the adjusting rod (10), and the reverse barbs are movably clamped with the moving block (11). One side of the push rod (12) away from the moving block (11) is fixedly connected to the clamping tooth (13). Pressing blocks are fixedly installed on the sides opposite to the clamping teeth (13) in the two through grooves of the snap ring (5). An adaptation groove adapted to the adjusting rod (10) is provided at the top of the push rod (14), and the push rod (14) is clamped with the adjusting rod (10) through the adaptation groove. The push rod (14) is slidably connected to the rotating sleeve (2) and the knife ring (7) through small through holes. The mesh belt (3) is located in a fixing groove provided inside the sleeve (1), and deformation ribs for making it arc-shaped are fixedly installed inside the fixing groove. The arc-shaped end of the mesh belt (3) is used for hanging the umbilical cord (8). A moving hole is provided inside the sleeve (1). The rotating sleeve (2) is movably connected to the sleeve (1) through the moving hole. An adjusting block is fixedly connected to the outside of the snap ring (5). An activity groove is provided on the surface of the moving hole inside the sleeve (1), and the adjusting block is slidably connected to the activity groove. Magnetic attraction blocks are fixedly connected to the bottoms of the snap ring (5) and the activity groove of the sleeve (1), and the two are attracted to each other through the magnetic attraction blocks.

2. A umbilical cord ligation puncture needle for terminating mid - to - late pregnancy according to claim 1, characterized in that: The rotating sleeve (2) is composed of a main rod and a holding block. The length of the main rod is longer than the overall length of the sleeve (1). A pulling groove adapted to the hanging hook (6) is provided at the end of the mesh belt (3), and the mesh belt (3) is clamped with the hanging hook (6) through the pulling groove.

3. A umbilical cord ligation puncture needle for terminating mid-late pregnancy according to claim 1, characterized in that: The cutting groove (9) is an arc-shaped cutting groove. The knife ring (7) is integrally welded to the rotating sleeve (2).

4. A umbilical cord ligation puncture needle for terminating mid-late pregnancy according to claim 1, characterized in that: Anti-slip sheets are fixedly connected to the outside of the holding block of the rotating sleeve (2). An auxiliary groove adapted to the adjusting rod (10) is provided inside the moving block (11), and the moving block (11) is slidably connected to the outside of the adjusting rod (10) through the auxiliary groove and can only move forward and not backward.

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