Lower uterine segment hemostatic structure for cesarean section

Abstract

This invention discloses a hemostatic structure for the lower uterine segment during cesarean section, comprising: a drainage tube for collecting and draining uterine bleeding during the cesarean section; a conduit for inflating or deflating gas or liquid, disposed outside the drainage tube and closed at one end; an elastic bladder fitted over the drainage tube and conduit and having a receiving cavity communicating with the inner lumen of the conduit; and an inflation component capable of inflating gas or liquid, detachably connected to the other end of the conduit, which inflates the receiving cavity with gas or liquid through the conduit, causing the elastic bladder to expand and compress the bleeding site in the lower uterine segment. This hemostatic structure is simple in structure and easy to operate. It can effectively prevent lower uterine segment bleeding by compressing poorly contracted or difficult-to-stop lower uterine segment during cesarean section, with significant effects and benefits for patient recovery.

Description

Technical Field

[0001] The invention relates to the field of medical technology, and in particular to a lower uterine segment hemostasis structure for cesarean section. Background Art

[0002] Postpartum hemorrhage is a serious perinatal complication and one of the leading causes of maternal mortality worldwide.

[0003] As we all know, cesarean section is an important means of clinical treatment of high-risk pregnancy, and the amount of bleeding during cesarean section is often greater than vaginal delivery. Postpartum hemorrhage after cesarean section, with cumulative bleeding reaching or exceeding 1000ml within 24 hours after cesarean section, is a serious complication of delivery.

[0004] During cesarean section, the placenta is usually attached to the anterior or posterior wall of the uterine body. When the placenta is separated from the uterine wall, the blood sinuses of the uterine wall open in large quantities, causing blood loss. At this time, the strong contraction of the uterine muscle fibers will quickly close the blood sinuses to reduce bleeding. However, when the placenta is attached to the lower uterine segment or when there is placenta previa, placenta adhesion, or even placenta implantation, the placenta is partially or completely separated from the lower uterine segment. Due to anatomical differences, compared with the uterine body, the muscle fibers of the lower uterine segment have poorer hemostatic function to close the blood sinuses and are not sensitive to oxytocin. Once the lower uterine segment contracts poorly, severe postpartum hemorrhage will occur.

[0005] In the prior art, the treatment methods for bleeding in the lower uterine segment during cesarean section are very limited, and often only various methods of repeated sutures are used to stop bleeding. A large number of sutures and hemostasis operations not only waste manpower and material resources, prolong the operation time, but also often fail to achieve satisfactory results. Summary of the invention

[0006] The purpose of the present invention is to solve the above-mentioned problem and to provide a lower uterine segment hemostasis structure for cesarean section. The structure is simple and easy to operate. It can compress the lower uterine segment with poor contraction or difficult hemostasis during cesarean section, effectively prevent bleeding in the lower uterine segment, and has obvious effects, which is beneficial to the patient's recovery.

[0007] To achieve the above-mentioned purpose of the present invention, the present invention provides a lower uterine segment hemostasis structure for cesarean section, which includes: a drainage tube for collecting and draining uterine bleeding during cesarean section; a catheter for filling and discharging gas or liquid, which is arranged outside the drainage tube and has one end closed; an elastic bag that is sleeved on the outside of the drainage tube and the catheter and has a accommodating cavity connected to the inner cavity of the catheter; an inflation component that can be filled with gas or a filling component that can be filled with liquid and is detachably connected to the other end of the catheter, which fills the accommodating cavity with gas or liquid through the catheter, so that the elastic bag expands and compresses the bleeding part of the lower uterine segment.

[0008] Wherein, a water injection valve is arranged at the other end of the conduit.

[0009] Wherein, the drainage tube and the catheter are integrally formed.

[0010] Alternatively, the drainage tube and the catheter are formed separately, and the two are fixedly connected together.

[0011] Wherein, the portion of the catheter close to the other end is separable from the portion of the corresponding end of the drainage tube.

[0012] Wherein, the inner wall of the elastic bag is at least partially fixedly connected to the outer wall of the drainage tube and the outer wall of the catheter.

[0013] Wherein, the elastic bag is located near the one end of the catheter.

[0014] Wherein, a communication hole for communicating with the accommodating cavity of the elastic bag is provided on the outer wall of the catheter at a side away from the drainage tube.

[0015] Furthermore, it also includes a cervical dilator cap for dilating the cervical opening, which can be mounted on the other end of the catheter and the corresponding end of the drainage tube.

[0016] Furthermore, it also includes a drainage bag that is detachably connected to the corresponding end of the drainage tube corresponding to the other end of the catheter.

[0017] Compared with the prior art, the lower uterine segment hemostasis structure for cesarean section of the present invention has the following advantages:

[0018] 1. The hemostatic structure of the present invention is applied to cesarean section. After the fetus and placenta are delivered, it can compress and stop bleeding of extensive bleeding in the lower uterine segment. It has a simple structure, is easy to operate, has obvious hemostatic effect, and is beneficial to the patient's recovery.

[0019] 2. The hemostatic structure of the present invention has a drainage tube that can collect uterine bleeding during cesarean section and drain the blood out of the patient's body in time, which is convenient for timely measuring the amount of bleeding of the parturient and coping with various possible situations; and its elastic bag can compress the lower segment of the uterus according to the bleeding situation, and can compress the bleeding site in time to stop bleeding, avoiding the damage to the parturient's body caused by a large number of repeated sutures for hemostasis as in the prior art, and reducing the manpower and material resources required for sutures, shortening the operation time, and facilitating the physical recovery of the parturient.

[0020] The present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the elastic bag in the lower uterine segment hemostasis structure for cesarean section of the present invention when it is in an expanded state (the drainage bag is not shown);

[0022] Figure 2 It is a schematic structural diagram of an elastic bag in the lower uterine segment hemostatic structure for cesarean section of the present invention in an initial state of retraction;

[0023] Figure 3 Schematic diagram of the lower uterine segment hemostasis structure for cesarean section of the present invention (showing the uterine expansion cap);

[0024] Figure 4 yes Figure 1 Schematic diagram of the drainage tube being connected to the drainage bag;

[0025] Figure 5 yes Figure 2 Schematic diagram of the first structure of the AA cross section;

[0026] Figure 6 yes Figure 2 Schematic diagram of the second structure of the AA cross section;

[0027] Figure 7 yes Figure 2 Schematic diagram of the third structure of the AA cross section. DETAILED DESCRIPTION

[0028] like Figure 1 , Figure 2 As shown, there are two structural schematic diagrams of the lower uterine segment hemostasis structure for cesarean section of the present invention in different states. It can be seen from the figures that the lower uterine segment hemostasis structure for cesarean section of the present invention includes: a drainage tube 4 for collecting and draining uterine bleeding during cesarean section; a catheter 2 for filling and discharging gas or liquid, which is arranged outside the drainage tube 4 and has one end closed; an elastic bag 3 which is sleeved on the outside of the drainage tube 4 and the catheter 2 and has a accommodating cavity 31 connected to the inner cavity 21 of the catheter 2; wherein the other end of the catheter 2 is used to connect an inflatable component that can be inflated or discharged with gas or a liquid-filled component that can be inflated or discharged with liquid, so that the inflatable component or the liquid-filled component can inflate gas or liquid into the accommodating cavity through the catheter 2, so that the elastic bag 3 expands and presses on the bleeding part of the lower uterine segment.

[0029] Specifically, the drainage tube 4 of the present invention is a medical hose (such as a latex tube, etc.), which drains the collected uterine bleeding during cesarean section from one end to the other end through an inner hole 41 extending along its length.

[0030] A catheter 2 extending parallel to the drainage tube 4 is arranged outside the drainage tube 4. The catheter 2 may also be a medical hose (such as a latex tube, etc.). One end of the catheter 2 is closed, and the other end is provided with a water injection valve 1. The water injection valve 1 may be detachably connected to an inflatable gas-filled component or a liquid-filled liquid-filled component, so that the gas-filled component or the liquid-filled component may be filled with gas or liquid into the inner cavity 21 of the catheter 2 through the water injection valve 1. The water injection valve 1 may be a medical water injection soft valve of the prior art. When water or gas is not injected into the catheter 2, the water injection valve 1 is in an automatically closed state, so that the inner cavity 21 of the catheter 2 is not connected to the outside air.

[0031] During manufacturing, the drainage tube 4 and the catheter 2 can be integrally formed, for example, by injection molding at one time, or the drainage tube 4 and the catheter 2 can be separately formed, that is, the drainage tube 4 and the catheter 2 are manufactured separately, and then the drainage tube 4 and the catheter 2 are fixedly connected together by bonding or the like.

[0032] Regardless of the manufacturing method, the portion of the catheter 2 near the other end should be separable from the portion of the corresponding end of the drainage tube 4, that is, Figure 1 , Figure 4 As shown, the portion of the catheter 2 close to the other end is not fixedly connected to the portion of the corresponding end of the drainage tube 4.

[0033] The gas-filling component or liquid-filling component can be a medical gas-filling or liquid-filling component in the prior art, such as a syringe or a gas injection device.

[0034] The present invention can collect uterine involution bleeding during cesarean section through the drainage tube, and drain the blood to the patient's body in time, so that doctors can measure the amount of bleeding after delivery in time, respond to various possible situations in time, and ensure the safety of the parturient.

[0035] Furthermore, the present invention can detachably connect the drainage bag 6 (such as Figure 4 As shown), the blood collected and drained by the drainage tube can be received by the drainage bag 6. The drainage bag 6 can adopt a drainage bag structure with a volume marking scale, or a structure including a drainage bag with a volume marking scale, a drainage tube provided at the bottom of the drainage bag, and a switch valve for controlling the switch of the drainage tube. The connection structure at the connection between the drainage bag 6 and the drainage tube 4 can adopt the connection structure of the drainage bag and the drainage tube in the prior art, which will not be described in detail here.

[0036] In order to promptly handle the extensive bleeding of the uterine incision, the present invention sets an elastic bag 3 on the outside of the drainage tube 4 and the catheter 2, which can be connected to the inner cavity 21 of the catheter 2. The elastic bag 3 has a receiving cavity 31 for receiving liquid or gas injected through the catheter 2. The elastic bag 3 is made of medical elastic materials in the prior art, which can expand and shrink. When shrinking, it can be closely attached to the outer wall of the drainage tube 4 and the catheter 2. When manufacturing, the elastic bag 3 can be a ring bag (such as Figure 7As shown), a quasi-elliptical capsule (such as Figure 6 As shown), a special-shaped capsule combining the two can also be used (such as Figure 5 As shown in the figure, of course, other shapes can also be used. Regardless of the shape, at least a portion of the inner wall of the elastic bag 3 is fixedly connected to the outer wall of the drainage tube 4 and the outer wall of the catheter 2, such as by gluing them together, so that the elastic bag 3 will not be separated from the outer wall of the drainage tube 4 and the catheter 2.

[0037] During the design, the elastic bag 3 is located at the closed end of the catheter 2, and a connecting hole 22 for connecting with the accommodating cavity 31 of the elastic bag 3 is opened on the outer wall of the catheter 2 on the side away from the drainage tube 4, so that the gas or liquid injected into the catheter 2 can flow into the accommodating cavity 31 of the elastic bag 3 through the connecting hole 22.

[0038] The present invention utilizes a water-filled or air-filled expandable elastic bag to compress a wide bleeding site of a uterine incision according to the bleeding situation, and can timely compress the bleeding site to stop bleeding, thereby avoiding the damage to the body of the parturient caused by a large number of repeated sutures to stop bleeding as in the prior art, and reducing the manpower and material resources required for sutures, shortening the operation time, and facilitating the physical recovery of the parturient.

[0039] In order to expand the cervical opening during cesarean section, the present invention also includes a cervical expansion cap 5, which can be mounted on the other end of the catheter 2 and the corresponding end of the drainage tube 4 (such as Figure 3 When designing, the other end of the catheter 2 and the corresponding end of the drainage tube 4 can be flush, so that when the two are closed, the uterine expansion cap 5 can be placed outside the two. Accordingly, the inner diameter of the uterine expansion cap 5 can be equivalent to the inner diameter of the circumscribed circle when the two are closed, so as to prevent the uterine expansion cap 5 placed outside the two from falling off easily.

[0040] Below, only taking the use of the liquid-filled component as an example, the working process of the lower uterine segment hemostasis structure of the present invention used in cesarean section is described (when the hemostasis structure is in an initial state of unused, the drainage tube is not connected to the drainage bag, the elastic bag is retracted and tightly wrapped around the outside of the drainage tube and the catheter, and the drainage tube and the catheter are closed and a uterine dilator cap is placed on it).

[0041] During cesarean section, especially in cases where the placenta is attached to the lower uterine segment, or the placenta is previa or even accreta, after partial or complete separation of the placenta, when the lower uterine segment bleeds a lot and hemostasis is difficult, the hemostatic structure of the lower uterine segment in its initial state is removed, and the cervical dilator cap is sent along the internal cervical os to the external cervical os and vaginal perineum. The surgical assistant wearing sterile gloves assists in pulling the part covered by the cervical dilator cap out of the parturient's body, removes the cervical dilator cap of the hemostatic structure, and injects saline into the catheter through the filling component and the water injection valve of the catheter to pass the saline to the elastic The sac is filled and pulled downward (i.e., outside the parturient's body) until the filled elastic sac compresses the bleeding site of the lower uterine segment below the incision. Continue to inject physiological saline to fill and expand the elastic sac to the required size (determine its expansion size according to actual conditions. Note: during use, the expansion size of the elastic sac can also be adjusted according to the situation) so that the elastic sac can achieve a satisfactory compression and hemostasis effect. After the bleeding is significantly reduced, fix the drainage tube and catheter, connect the drainage tube to the drainage bag, carefully check the uterine incision and surrounding bleeding, and suture the uterine incision as usual. At this time, the elastic sac will remain in the lower uterine cavity and continue to play a compression and hemostasis effect. According to the bleeding collected in the drainage bag, it can be removed from the vagina within 24 hours after the operation (when removing, the physiological saline in the elastic sac needs to be extracted through the filling component to shrink the elastic sac).

[0042] In summary, compared with the prior art, the lower uterine segment hemostasis structure for cesarean section of the present invention has the following advantages:

[0043] 1. The hemostatic structure of the present invention is applied to cesarean section. After the fetus and placenta are delivered, it can compress and stop bleeding of extensive bleeding in the lower uterine segment. It has a simple structure, is easy to operate, has obvious hemostatic effect, and is beneficial to the patient's recovery.

[0044] 2. The hemostatic structure of the present invention has a drainage tube that can collect uterine bleeding during cesarean section and drain the blood out of the patient's body in time, which is convenient for timely measuring the amount of bleeding of the parturient and coping with various possible situations; and its elastic bag can compress the extensive bleeding site of the lower uterine segment according to the bleeding situation, and can compress the bleeding site in time to stop bleeding, avoiding the damage to the parturient's body caused by a large number of repeated sutures for hemostasis as in the prior art, and reducing the manpower and material resources required for sutures, shortening the operation time, and facilitating the physical recovery of the parturient.

[0045] Although the present invention has been described in detail above, the present invention is not limited thereto. Those skilled in the art may make modifications based on the principles of the present invention. Therefore, all modifications made based on the principles of the present invention should be understood to fall within the protection scope of the present invention.

Claims

1. A lower uterine segment hemostatic structure for cesarean section, characterized in that: include: Drainage tubes used to collect and drain uterine bleeding during cesarean section; A catheter disposed outside the drainage tube and having one end sealed, which extends parallel to the drainage tube and whose portion close to the other end is flush with and separable from the portion at the corresponding end of the drainage tube; An elastic bag which is sleeved on the outside of the drainage tube and the catheter and is located near the closed end of the catheter and has a receiving cavity which is connected with the inner cavity of the catheter; An inflatable component for inflating or discharging gas or a liquid-filling component for inflating or discharging liquid is detachably connected to the other end of the catheter, and inflates gas or liquid into the accommodating cavity through the catheter, so that the elastic bag expands and compresses the bleeding part of the lower uterine segment; The inner diameter of the uterine dilator cap, which is mounted on the other end of the catheter and the corresponding flush end of the drainage tube and is used to dilate the cervical opening, is directly equivalent to the circumscribed circle when the two are closed.

2. The lower uterine segment hemostatic structure for cesarean section according to claim 1, characterized in that: A water injection valve is arranged at the other end of the conduit.

3. The lower uterine segment hemostatic structure for cesarean section according to claim 2, characterized in that: The drainage tube is integrally formed with the catheter.

4. The lower uterine segment hemostatic structure for cesarean section according to claim 2, characterized in that: The drainage tube and the catheter are formed separately, and the two are fixedly connected together.

5. The lower uterine segment hemostatic structure for cesarean section according to claim 3 or 4, characterized in that: The portion of the catheter close to the other end is separable from the portion of the corresponding end of the drainage tube.

6. The lower uterine segment hemostatic structure for cesarean section according to claim 3 or 4, characterized in that: The inner wall of the elastic bag is at least partially fixedly connected to the outer wall of the drainage tube and the outer wall of the catheter.

7. The lower uterine segment hemostatic structure for cesarean section according to claim 6, characterized in that: The elastic balloon is located near the one end of the catheter.

8. The lower uterine segment hemostatic structure for cesarean section according to claim 7, characterized in that: A communication hole for communicating with the accommodating cavity of the elastic bag is provided on the outer wall of the catheter at a side away from the drainage tube.

9. The lower uterine segment hemostatic structure for cesarean section according to claim 8, characterized in that: Also included is a drainage bag for detachably connecting to the corresponding end of the drainage tube corresponding to the other end of the catheter.

Images