A lockable pull-out structure specifically for uterine hemostasis devices

Abstract

This invention discloses a lockable pull-out structure specifically for a uterine hemostat. It includes a vacuum tube, with a vacuum connector and a locking seat at one end. The vacuum connector is connected to the side wall of the vacuum tube, and the locking seat is connected to the end of the vacuum tube. The other end of the vacuum tube has a sealing seat and a flexible ring tube. The sealing seat is fitted onto the vacuum tube, and the flexible ring tube is connected to the end of the vacuum tube. An extraction channel is provided inside the vacuum tube. One end of the flexible ring tube communicates with the vacuum connector through the extraction channel. Several suction holes are provided on the side wall of the flexible ring tube. An operating rod is provided inside the vacuum tube, located on the side of the extraction channel. The operating rod is slidably connected to the vacuum tube. One end of the operating rod passes through the locking seat and is located outside the vacuum tube. A locking block matching the locking seat is provided at the end of the operating rod passing through the locking seat. The other end of the operating rod passes through the end of the vacuum tube and is fixedly connected to the other end of the flexible ring tube. The advantages of this invention are: improved human comfort and ease of operation.

Description

Technical Field

[0001] This invention relates to the technical field of postpartum hemostatic devices, and in particular to a lockable pull-out structure specifically designed for uterine hemostatic devices. Background Technology

[0002] Postpartum hemorrhage, defined as excessive blood loss after childbirth, is a leading cause of maternal death worldwide, claiming the lives of more than 125,000 mothers each year. Uncontrolled postpartum hemorrhage may require multiple blood transfusions and, in severe cases, can lead to a total hysterectomy or death. Therefore, it is desirable to control postpartum hemorrhage as soon as it begins, if possible. In approximately 80% of cases, postpartum hemorrhage is caused by uterine atony, which is the inability of the uterus to contract after delivery. Risk factors for uterine atony include prolonged labor, preeclampsia, and multiparity. Therefore, a system is needed that can rapidly induce uterine contractions, thereby reducing or completely stopping uterine bleeding.

[0003] Based on this, PCT international patent application number 201980090205.4 discloses a postpartum uterine hemorrhage device, comprising: an elongated body configured to be connected to a vacuum source; a flexible annular portion connected to the elongated body and configured to be placed in the uterus, the flexible annular portion including a plurality of holes on its inner circumference, wherein when the elongated body is inserted into the uterus, activation of the vacuum source is configured to draw a vacuum through the plurality of holes to contract the uterus; a protective body folded around the outer circumference of the annular portion and having an edge extending radially inward relative to the distal portion of the flexible annular portion, the protective body being configured to prevent tissue from blocking the plurality of holes when a vacuum is applied; and an expandable seal connected to the elongated body and configured to seal the uterus.

[0004] As can be seen from the above patent, when the flexible ring part is inserted into the uterus, the deformation of the flexible ring part is mainly controlled by the vaginal opening. According to the principle that forces are reciprocal, the human body will feel a certain degree of distending pain, which is not comfortable and also not conducive to operation. Summary of the Invention

[0005] The present invention aims to overcome the shortcomings of existing uterine bleeding devices in terms of poor user comfort during use, and provides a lockable pull-out structure specifically designed for uterine hemostasis devices that improves user comfort.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A lockable pull-out structure for a uterine hemostatic device includes a vacuum tube. One end of the vacuum tube has a vacuum connector and a locking seat. The vacuum connector is connected to the side wall of the vacuum tube, and the locking seat is connected to the end of the vacuum tube. The other end of the vacuum tube has a sealing seat and a flexible ring tube. The sealing seat is fitted onto the vacuum tube, and the flexible ring tube is connected to the end of the vacuum tube. The vacuum tube has an extraction channel. One end of the flexible ring tube is connected to the vacuum connector through the extraction channel. The side wall of the flexible ring tube has several suction holes. An operating rod is located inside the vacuum tube and is located on the side of the extraction channel. The operating rod is slidably connected to the vacuum tube. One end of the operating rod passes through the locking seat and is located outside the vacuum tube. The end of the operating rod passing through the locking seat has a locking block that matches the locking seat. The other end of the operating rod passes through the end of the vacuum tube and is fixedly connected to the other end of the flexible ring tube.

[0008] One end of the vacuum tube is provided with a vacuum connector and a locking seat. The vacuum connector is connected to the side wall of the vacuum tube, and the locking seat is connected to the end of the vacuum tube. The other end of the vacuum tube is provided with a sealing seat and a flexible ring tube. The sealing seat is sleeved on the vacuum tube, and the flexible ring tube is connected to the end of the vacuum tube. The vacuum tube has an extraction channel. One end of the flexible ring tube is connected to the vacuum connector through the extraction channel. The side wall of the flexible ring tube has several suction holes. The vacuum tube has an operating rod inside. The operating rod is located on the side of the extraction channel and is slidably connected to the vacuum tube. One end of the operating rod passes through the locking seat and is located outside the vacuum tube. The end of the operating rod passing through the locking seat has a locking block that matches the locking seat. The other end of the operating rod passes through the end of the vacuum tube and is fixedly connected to the other end of the flexible ring tube. The vacuum connector connects to the vacuum source. Before insertion into the body, the user pushes the operating lever to slide it forward, then matches the locking block with the locking seat to position the operating lever, keeping the flexible ring tube flat. Inserted into the uterus through the vaginal opening, this reduces the interaction force between the tube and the vaginal opening, improving comfort, reducing patient pain, and enhancing ease of operation. After the flexible ring tube enters the uterus, the locking block separates from the locking seat, and the operating lever is pulled in the opposite direction to restore the flexible ring tube to its original shape. The sealing seat seals the cervix, the vacuum source is activated, and the uterus is evacuated through the extraction channel and several suction holes to contract the uterus, thereby reducing or completely stopping uterine bleeding.

[0009] Preferably, the operating rod includes a push rod, a metal wire, and a protective sleeve. One end of the push rod passes through the locking seat and is located outside one end of the vacuum tube. The end of the push rod outside the vacuum tube is fixedly connected to the locking block. The other end of the push rod is located inside the vacuum tube. The end of the push rod inside the vacuum tube is fixedly connected to one end of the metal wire. The other end of the metal wire passes through the other end of the vacuum tube and is fixedly connected to the flexible ring tube. The protective sleeve is fitted onto the outer wall of the metal wire. Because the metal wire has a small diameter and a certain degree of flexibility, the push rod is connected to the flexible ring tube via the metal wire. This not only helps to reduce the foreign body sensation when the flexible ring tube enters the human body, improving comfort, but also, since the operating rod is located on the side of the extraction channel, the operating rod and the flexible ring tube are not on the same straight line. Therefore, using the metal wire to connect to the flexible ring tube facilitates the operation of the operating rod. The protective sleeve provides some protection for the metal wire.

[0010] Preferably, the locking seat includes a seat body and a locking ring. One end of the seat body is fixedly connected to the end of the vacuum tube, and the other end of the seat body has a column that matches the locking ring. One end of the column is fixedly connected to the seat body and forms an integral part. The column is located inside one end of the locking ring, and the locking ring is rotatably connected to the column. A blocking groove is provided inside the column. The operating rod passes through the seat body and the blocking groove in sequence and is fixedly connected to the locking block. The locking block includes a lock cap. The lock cap has a T-shaped cross-section. One end of the lock cap is located outside the locking ring, and the diameter of the lock cap is larger than the inner diameter of the locking ring. The other end of the lock cap is located inside the locking ring. It is equipped with a blocking block that matches the blocking groove and several locking tongues. The blocking block is fixedly connected to the end of the lock cap and forms an integral part. The locking tongue is fixedly connected to the side wall of the lock cap. Several locking tongues are evenly distributed on the other edge of the lock cap. The other end of the locking ring is equipped with several stops that correspond one-to-one with the locking tongues. The stops are fixedly connected to the inner circumferential surface of the locking ring. The stops and the other end of the column form a locking groove that matches the locking tongue. The other end of the column is equipped with a limiting block that is fixedly connected to the column. The other edge of the lock cap is equipped with a limiting groove that matches the limiting block. The limiting groove is located on the side of the locking tongue. Before the locking block aligns with the locking seat, the user rotates the locking ring at a certain angle so that the locking tongue is positioned between the two adjacent stops, allowing the locking tongue to be inserted into the locking ring. Simultaneously, the plug is inserted into the plugging groove. Then, the locking ring is rotated again so that the locking tongue is positioned in the locking groove, thereby positioning the operating lever and keeping the flexible ring tube flat as it enters the body, improving the ease of operation. After the flexible ring tube enters the uterus, the user rotates the locking ring again so that the locking tongue is positioned between the two adjacent stops. Finally, the locking cap is pulled out, and the operating lever moves backward, allowing the flexible ring tube to return to its original shape, facilitating the operation of the hemostat. The matching of the limiting block and the limiting groove helps to keep the locking cap stationary when the locking ring rotates, thus facilitating relative displacement between the locking tongue and the stops.

[0011] Preferably, there are two locking tongues, which are symmetrically distributed about the center of the lock cap. The limiting groove is located between the two locking tongues. For the present invention, this design allows the user to lock or unlock the locking ring by rotating it 45 degrees forward or backward. One side of the locking tongue is fixedly connected to the lock cap, and the corresponding other side of the locking tongue is arc-shaped and matches the inner circumference of the locking ring. The width of the locking tongue is less than the distance between the two stops, so that when the locking tongue is between the two stops, it can be inserted into the locking ring from between the two stops.

[0012] Preferably, the outer circumferential surface of the locking ring is provided with an arc-shaped groove, one end of which is close to the lock cap and corresponds to any one of the locking grooves, and the other end of which is away from the lock cap and corresponds to the limiting block. The side wall of the locking ring is provided with a locking rod, which is threadedly connected to the locking ring. One end of the locking rod is located outside the locking ring, and the other end of the locking rod is located inside the locking ring and matches the arc-shaped groove. Before the locking block aligns with the locking seat, the user first loosens the locking bar, then rotates the locking ring 45 degrees clockwise, moving the locking bar to the end of the arc groove near the lock cap, while the bolt is positioned between the two corresponding stops and inserted into the locking ring. Simultaneously, the plug is inserted into the blocking groove. Then, the user rotates the locking ring 45 degrees counter-clockwise, moving the locking bar to the end of the arc groove away from the lock cap, while the bolt is positioned in the corresponding locking groove and pressed down. Finally, the user tightens the locking bar to position the operating lever, allowing the flexible ring tube to remain flat and enter the body, improving ease of operation. After the flexible ring tube enters the uterus, the user rotates the locking ring 45 degrees clockwise again, positioning the bolt between the two adjacent stops. The locking ring pushes the lock cap outwards, facilitating the plug's disengagement from the blocking groove and allowing the user to remove the lock cap. The operating lever moves backward, restoring the flexible ring tube to its original shape.

[0013] Preferably, one end of the blocking groove is close to the lock cap, and the other end is away from the lock cap, with the diameter of the blocking groove gradually decreasing from the end closer to the lock cap to the other end. This design provides better guidance when the plug is inserted into the blocking groove.

[0014] Preferably, several suction holes are evenly distributed along the circumference of the flexible ring tube. These suction holes are located between the outer and inner circumferential surfaces of the flexible ring tube, facing the inner diameter of the tube. Between each pair of adjacent suction holes, a skirt extending radially inward from the outer circumferential surface of the flexible ring tube is provided, forming a flared opening between each pair of adjacent skirts that communicates with the suction hole. The location of the suction holes between the outer and inner circumferential surfaces of the flexible ring tube facilitates contact between the suction holes and the tissue surface. It also facilitates the formation of a flared opening between each pair of adjacent skirts that communicates with the suction hole, providing good guidance for the suction holes when aspirating contaminated blood from the tissue surface, improving the efficiency of contaminated blood aspiration, and protecting the suction holes from blockage by tissue and blood clots.

[0015] Preferably, the sealing seat has a filling cavity, the vacuum tube has a valved port on its side wall, and the vacuum tube has a delivery channel located on the side of the operating rod. The port is connected to the filling cavity through the delivery channel. The sealing seat is generally made of silicone, but is not limited to this material. After the vacuum source is connected to the vacuum connector, the uterus is evacuated through the extraction channel and several suction holes to contract the uterus. When the sealing seat needs to seal the cervix, the user inserts a syringe into the valved port and injects sterile liquid into the filling cavity through the delivery channel, causing the sealing seat to expand and thus seal the cervix. Conversely, after the sterile liquid in the filling cavity is extracted with the syringe, the sealing seat retracts and returns to its original shape, facilitating the removal of the hemostat from the body while avoiding injury and improving comfort during operation.

[0016] Preferably, the sealing seat includes a disc-shaped sealing body and a sleeve. The sleeve passes through the center of the disc-shaped sealing body, with its two ends located on the left and right sides of the disc-shaped sealing body, respectively. The filling cavity is located inside the disc-shaped sealing body and forms an annular structure with the sleeve as its center. The outer circumferential surface of the sleeve is fixedly connected to the disc-shaped sealing body. The side wall of the sleeve has a through hole communicating with the interior of the filling cavity, and the inner circumferential surface of the sleeve is connected to the outer wall of the vacuum tube. Sterile liquid is sequentially transported into the filling cavity through the delivery channel and the through hole. The annular structure of the filling cavity with the sleeve as its center facilitates sealing the entire cervical os after the filling cavity expands with liquid, thus improving the sealing effect.

[0017] Preferably, both the vacuum connector and the port form an acute angle with the vacuum tube. One end of the vacuum connector and one end of the port are both away from the locking block and fixedly connected to the vacuum tube, while the other end of the vacuum connector and the other end of the port are close to the locking block and suspended in mid-air. This facilitates operation by the user.

[0018] The beneficial effects of this invention are: the flexible ring tube remains flat when entering the human body, which improves human comfort and reduces patient pain; at the same time, the operating rod is locked by the locking block and the locking seat, which improves the convenience of operation; it improves the efficiency of blood suction and helps protect the suction hole from being blocked by tissue and blood clots; and it helps improve the sealing effect of the cervix. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a partial exploded view of the present invention;

[0021] Figure 3 This is the front view of the present invention;

[0022] Figure 4 yes Figure 3 Sectional view of AA;

[0023] Figure 5 yes Figure 4 Enlarged view of the structure at point D;

[0024] Figure 6 yes Figure 2 Enlarged view of the structure at point C;

[0025] Figure 7 yes Figure 3 Enlarged view of the structure at point E in the middle;

[0026] Figure 8 yes Figure 3 Top view;

[0027] Figure 9 yes Figure 8 Sectional view of BB;

[0028] Figure 10 yes Figure 9 Enlarged view of the structure at point F.

[0029] In the diagram: 1. Vacuum tube, 2. Vacuum connector, 3. Locking seat, 4. Sealing seat, 5. Flexible ring tube, 6. Extraction channel, 7. Suction hole, 8. Operating rod, 9. Locking block, 10. Top rod, 11. Metal wire, 12. Protective sleeve, 13. Seat body, 14. Locking ring, 15. Column, 16. Blocking groove, 17. Lock cap, 18. Blocking block, 19. Locking tongue, 20. Stop block, 21. Locking groove, 22. Limiting block, 23. Limiting groove, 24. Arc groove, 25. Locking rod, 26. Skirt, 27. Trumpet mouth, 28. Filling cavity, 29. Port, 30. Conveying channel, 31. Disc-shaped sealing body, 32. Sleeve, 33. Through hole. Detailed Implementation

[0030] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4 In the embodiments described, a lockable pull-out structure for a uterine hemostat includes a vacuum tube 1. One end of the vacuum tube 1 is provided with a vacuum connector 2 and a locking seat 3. The vacuum connector 2 is connected to the side wall of the vacuum tube 1, and the locking seat 3 is connected to the end of the vacuum tube 1. The other end of the vacuum tube 1 is provided with a sealing seat 4 and a flexible ring tube 5. The sealing seat 4 is sleeved on the vacuum tube 1, and the flexible ring tube 5 is connected to the end of the vacuum tube 1. The vacuum tube 1 is provided with an extraction channel 6. One end of the flexible ring tube 5 is connected to the vacuum connector 2 through the extraction channel 6. The side wall of the flexible ring tube 5 is provided with several suction holes 7. The vacuum tube 1 is provided with an operating rod 8. The operating rod 8 is located on the side of the extraction channel 6 and is slidably connected to the vacuum tube 1. One end of the operating rod 8 passes through the locking seat 3 and is located outside the vacuum tube 1. One end of the operating rod 8 passing through the locking seat 3 is provided with a locking block 9 that matches the locking seat 3. The other end of the operating rod 8 passes through the end of the vacuum tube 1 and is fixedly connected to the other end of the flexible ring tube 5.

[0032] like Figure 4 As shown, the operating lever 8 includes a push rod 10, a metal wire 11, and a protective sleeve 12. One end of the push rod 10 passes through the locking seat 3 and is located outside one end of the vacuum tube 1. The end of the push rod 10 located outside the vacuum tube 1 is fixedly connected to the locking block 9. The other end of the push rod 10 is located inside the vacuum tube 1. The end of the push rod 10 located inside the vacuum tube 1 is fixedly connected to one end of the metal wire 11. The other end of the metal wire 11 passes through the other end of the vacuum tube 1 and is fixedly connected to the flexible ring tube 5. The protective sleeve 12 is sleeved on the outer wall of the metal wire 11.

[0033] like Figure 5 and Figure 6As shown, the locking seat 3 includes a seat body 13 and a locking ring 14. One end of the seat body 13 is fixedly connected to the end of the vacuum tube 1, and the other end of the seat body 13 is provided with a column 15 that matches the locking ring 14. One end of the column 15 is fixedly connected to the seat body 13 and forms an integral part. The column 15 is located inside one end of the locking ring 14, and the locking ring 14 and the column 15 are rotatably connected. A blocking groove 16 is provided inside the column 15. The operating rod 8 passes through the seat body 13 and the blocking groove 16 in sequence and is fixedly connected to the locking block 9. The locking block 9 includes a lock cap 17. The cross-sectional shape of the lock cap 17 is T-shaped. One end of the lock cap 17 is located outside the locking ring 14, and the diameter of the lock cap 17 is larger than the inner diameter of the locking ring 14. The other end of the lock cap 17 is located inside the locking ring 14 and is provided with a blocking groove 16. The groove 16 is matched with a blocking block 18 and several locking tongues 19. The blocking block 18 is fixedly connected to the end of the lock cap 17 and forms an integral part. The locking tongues 19 are fixedly connected to the side wall of the lock cap 17. Several locking tongues 19 are evenly distributed on the other edge of the lock cap 17. The other end of the locking ring 14 is provided with several stops 20 that correspond one-to-one with the locking tongues 19. The stops 20 are fixedly connected to the inner circumferential surface of the locking ring 14. The stops 20 and the other end of the column 15 form a locking groove 21 that matches the locking tongues 19. The other end of the column 15 is provided with a limiting block 22 that is fixedly connected to the column 15. The other edge of the lock cap 17 is provided with a limiting groove 23 that matches the limiting block 22. The limiting groove 23 is located on the side of the locking tongues 19.

[0034] like Figure 6 As shown, there are two latches 19, which are symmetrically distributed on the left and right sides with the lock cap 17 as the center. The limiting groove 23 is located in the middle of the two latches 19. One side of the latch 19 is fixedly connected to the lock cap 17, and the other side of the latch 19 is arc-shaped and matches the inner circumferential surface of the locking ring 14. The width of the latch 19 is less than the distance between the two stops 20.

[0035] like Figure 5 and Figure 6 As shown, an arc-shaped groove 24 is provided on the outer circumference of the locking ring 14. One end of the arc-shaped groove 24 is close to the lock cap 17 and corresponds to any one of the locking grooves 21. The other end of the arc-shaped groove 24 is away from the lock cap 17 and corresponds to the limiting block 22. A locking rod 25 is provided on the side wall of the locking ring 14. The locking rod 25 is threadedly connected to the locking ring 14. One end of the locking rod 25 is located outside the locking ring 14, and the other end of the locking rod 25 is located inside the locking ring 14 and matches the arc-shaped groove 24.

[0036] like Figure 5 and Figure 6 As shown, one end of the blocking groove 16 is close to the lock cap 17, and the other end of the blocking groove 16 is away from the lock cap 17. The diameter of the blocking groove 16 gradually decreases from the end close to the lock cap 17 to the other end.

[0037] like Figure 3and Figure 7 As shown, a number of suction holes 7 are evenly distributed along the circumference of the flexible ring tube 5. The suction holes 7 are located between the outer circumferential surface and the inner circumferential surface of the flexible ring tube 5. The suction holes 7 face the inner diameter of the flexible ring tube 5. Between each two adjacent suction holes 7, there is a skirt 26 formed by the outer circumferential surface of the flexible ring tube 5 extending radially inward. Between each two adjacent skirts 26, a flared opening 27 is formed that communicates with the suction holes 7.

[0038] like Figure 8 and Figure 9 As shown, the sealing seat 4 is provided with a filling cavity 28, the side wall of the vacuum tube 1 is provided with a port 29 with a valve, the vacuum tube 1 is provided with a conveying channel 30, the conveying channel 30 is located on the side of the operating rod 8, and the port 29 is connected to the filling cavity 28 through the conveying channel 30.

[0039] like Figure 9 and Figure 10 As shown, the sealing seat 4 includes a disc-shaped sealing body 31 and a sleeve 32. The sleeve 32 passes through the center of the disc-shaped sealing body 31 and its two ends are located on the left and right sides of the disc-shaped sealing body 31, respectively. The filling cavity 28 is located inside the disc-shaped sealing body 31. The filling cavity 28 forms an annular structure with the sleeve 32 as the center. The outer circumferential surface of the sleeve 32 is fixedly connected to the disc-shaped sealing body 31. The side wall of the sleeve 32 is provided with a through hole 33 that communicates with the inside of the filling cavity 28. The inner circumferential surface of the sleeve 32 is connected to the outer wall of the vacuum tube 1.

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, both vacuum connector 2 and port 29 form an acute angle with vacuum tube 1. One end of vacuum connector 2 and one end of port 29 are far away from locking block 9 and are fixedly connected to vacuum tube 1. The other end of vacuum connector 2 and the other end of port 29 are close to locking block 9 and are suspended.

[0041] During operation, first connect the vacuum connector 2 to the vacuum source. Before inserting the hemostat into the human body, the user first loosens the locking rod 25, then rotates the locking ring 14 clockwise by 45 degrees, causing the locking rod 25 to move to the end of the arc groove 24 near the locking cap 17, while the locking tongue 19 is positioned between the two corresponding stops 20. The locking tongue 19 is then inserted into the locking ring 14, and at the same time, the plug 18 is inserted into the plugging groove 16. Then, the locking ring 14 is rotated counterclockwise by 45 degrees, causing the locking rod 25 to move to the end of the arc groove 24 away from the locking cap 17, while the locking tongue 19 is positioned in the corresponding locking groove 21, and the locking tongue 19 is pressed. Finally, the locking rod 25 is tightened to position the operating rod 8, ultimately allowing the flexible ring tube 5 to remain flat and enter the human body, improving the convenience of operation. When the flexible ring tube 5 enters the uterus, the user rotates the locking ring 1445 degrees clockwise again, so that the locking tongue 19 is once again positioned between the two adjacent stops 20. At the same time, the locking ring 14 pushes the locking cap 17 outward, making it easier for the block 18 to disengage from the blocking groove 16, and for the user to pull out the locking cap 17. The operating rod 8 moves backward, so that the flexible ring tube 5 returns to its original state, which is conducive to better vacuuming of the uterine cavity. After the user inserts the syringe into the valved port 29, the sterile liquid is injected into the filling cavity 28 through the delivery channel 30, causing the sealing seat 4 to expand and seal the cervix. The vacuum source is activated, and the uterine cavity is vacuumed through the extraction channel 6 and several suction holes 7 in sequence to contract the uterus, thereby reducing or completely stopping uterine bleeding.

[0042] In the above process, the suction hole 7 is located on the bottom side of the flexible ring tube 5 so that a funnel mouth 27 connected to the suction hole 7 can be formed between each pair of adjacent skirts 26, so that it can play a good guiding role when suctioning contaminated blood from the suction hole 7, improve suction efficiency, and at the same time help protect the suction hole 7 from being blocked by tissue and blood clots.

[0043] After the operation is completed, the user uses a syringe to draw out the sterile liquid in the filling cavity 28, causing the sealing seat 4 to retract and return to its original shape, thus releasing the seal of the cervix; then the user repeats the above action so that the flexible ring tube 5 gradually flattens under the action of the operating rod 8, so as to facilitate the removal of the hemostat from the vaginal opening.

Claims

1. A lockable pull-out structure specifically for a uterine hemostatic device, characterized in that, The system includes a vacuum tube (1), one end of which is provided with a vacuum connector (2) and a locking seat (3). The vacuum connector (2) is connected to the side wall of the vacuum tube (1), and the locking seat (3) is connected to the end of the vacuum tube (1). The other end of the vacuum tube (1) is provided with a sealing seat (4) and a flexible ring tube (5). The sealing seat (4) is fitted onto the vacuum tube (1), and the flexible ring tube (5) is connected to the end of the vacuum tube (1). The vacuum tube (1) has an extraction channel (6) inside, and one end of the flexible ring tube (5) is connected to the vacuum connector (2) through the extraction channel (6). 2) Connected, the flexible ring tube (5) has several suction holes (7) on its side wall, the vacuum tube (1) has an operating rod (8) inside, the operating rod (8) is located on the side of the extraction channel (6), the operating rod (8) is slidably connected to the vacuum tube (1), one end of the operating rod (8) passes through the locking seat (3) and is located outside the vacuum tube (1), the end of the operating rod (8) that passes through the locking seat (3) has a locking block (9) that matches the locking seat (3), the other end of the operating rod (8) passes through the end of the vacuum tube (1) and is fixedly connected to the other end of the flexible ring tube (5);The locking seat (3) includes a seat body (13) and a locking ring (14). One end of the seat body (13) is fixedly connected to the end of the vacuum tube (1). The other end of the seat body (13) is provided with a column (15) that matches the locking ring (14). One end of the column (15) is fixedly connected to the seat body (13) and forms an integral part. The column (15) is located inside one end of the locking ring (14). The locking ring (14) and the column (15) are rotatably connected. A blocking groove (16) is provided inside the column (15). The operating rod (8) passes through the seat body (13) and the blocking groove (16) in sequence and is then fixedly connected to the locking block (9). The lock block (9) includes a lock cap (17) with a T-shaped cross-section. One end of the lock cap (17) is located outside the locking ring (14), and the diameter of the lock cap (17) is larger than the inner diameter of the locking ring (14). The other end of the lock cap (17) is located inside the locking ring (14) and is provided with a plug (18) that matches the plug groove (16) and several lock tongues (19). The plug (18) is fixedly connected to the end of the lock cap (17) and forms an integral part. The lock tongues (19) are fixedly connected to the side wall of the lock cap (17). Several lock tongues (19) are evenly distributed on the edge of the other end of the lock cap (17). The other end of the locking ring (14) is provided with several blocks (20) corresponding one-to-one with the bolt (19). The blocks (20) are fixedly connected to the inner circumferential surface of the locking ring (14). The blocks (20) and the other end of the column (15) form a locking groove (21) that matches the bolt (19). The other end of the column (15) is provided with a limiting block (22). The limiting block (22) is fixedly connected to the column (15). The other edge of the lock cap (17) is provided with a limiting groove (23) that matches the limiting block (22). The limiting groove (23) is located on the side of the bolt (19). The operating lever ( 8) Includes a push rod (10), a metal wire (11), and a protective sleeve (12). One end of the push rod (10) passes through the locking seat (3) and is located outside one end of the vacuum tube (1). The end of the push rod (10) outside the vacuum tube (1) is fixedly connected to the locking block (9). The other end of the push rod (10) is located inside the vacuum tube (1). The end of the push rod (10) inside the vacuum tube (1) is fixedly connected to one end of the metal wire (11). The other end of the metal wire (11) passes through the other end of the vacuum tube (1) and is fixedly connected to the flexible ring tube (5). The protective sleeve (12) is fitted onto the outer wall of the metal wire (11).

2. The lockable pull-out structure for a uterine hemostat according to claim 1, characterized in that, There are two latches (19), which are symmetrically distributed on the left and right sides with the lock cap (17) as the center. The limiting groove (23) is located in the middle of the two latches (19). One side of the latch (19) is fixedly connected to the lock cap (17). The other side of the latch (19) is arc-shaped and matches the inner circumference of the locking ring (14). The width of the latch (19) is less than the distance between the two stops (20).

3. A lockable pull-out structure for a uterine hemostat according to claim 1 or 2, characterized in that, The outer circumferential surface of the locking ring (14) is provided with an arc groove (24). One end of the arc groove (24) is close to the lock cap (17) and corresponds to any one of the locking grooves (21). The other end of the arc groove (24) is away from the lock cap (17) and corresponds to the limiting block (22). The side wall of the locking ring (14) is provided with a locking rod (25). The locking rod (25) is threadedly connected to the locking ring (14). One end of the locking rod (25) is located outside the locking ring (14), and the other end of the locking rod (25) is located inside the locking ring (14) and matches the arc groove (24).

4. The lockable pull-out structure for a uterine hemostat according to claim 1, characterized in that, One end of the blocking groove (16) is close to the lock cap (17), and the other end of the blocking groove (16) is away from the lock cap (17). The diameter of the blocking groove (16) gradually decreases from the end close to the lock cap (17) to the other end.

5. The lockable pull-out structure for a uterine hemostat according to claim 1, characterized in that, Several suction holes (7) are evenly distributed along the circumference of the flexible ring tube (5). The suction holes (7) are located between the outer circumferential surface and the inner circumferential surface of the flexible ring tube (5). The suction holes (7) face the inner diameter of the flexible ring tube (5). Between each two adjacent suction holes (7), there is a skirt (26) formed by the outer circumferential surface of the flexible ring tube (5) extending radially inward. Between each two adjacent skirts (26), a flared mouth (27) is formed that communicates with the suction holes (7).

6. The lockable pull-out structure for a uterine hemostat according to claim 1, characterized in that, The sealing seat (4) is provided with a filling cavity (28), the side wall of the vacuum tube (1) is provided with a port (29) with a valve, the vacuum tube (1) is provided with a conveying channel (30), the conveying channel (30) is located on the side of the operating rod (8), and the port (29) is connected to the filling cavity (28) through the conveying channel (30).

7. The lockable pull-out structure for a uterine hemostat according to claim 6, characterized in that, The sealing seat (4) includes a disc-shaped sealing body (31) and a sleeve (32). The sleeve (32) passes through the center of the disc-shaped sealing body (31) and its two ends are located on the left and right sides of the disc-shaped sealing body (31). The filling cavity (28) is located inside the disc-shaped sealing body (31). The filling cavity (28) forms an annular structure with the sleeve (32) as the center. The outer circumferential surface of the sleeve (32) is fixedly connected to the disc-shaped sealing body (31). The side wall of the sleeve (32) is provided with a through hole (33) that communicates with the inside of the filling cavity (28). The inner circumferential surface of the sleeve (32) is connected to the outer wall of the vacuum tube (1).

8. The lockable pull-out structure for a uterine hemostat according to claim 6, characterized in that, The vacuum connector (2) and the port (29) both form an acute angle with the vacuum tube (1). One end of the vacuum connector (2) and one end of the port (29) are both far away from the locking block (9) and are fixedly connected to the vacuum tube (1). The other end of the vacuum connector (2) and the other end of the port (29) are both close to the locking block (9) and are suspended.

Images