Negative pressure uterine tamponade hemostasis device

Abstract

The application belongs to the field of medical devices, and particularly relates to a negative pressure uterine cavity tamponade hemostasis device, which comprises a cannula body, a suction head connected to the front end of the cannula body, a capsule body sleeved on the outside of the cannula body, and an inflation tube connected to the capsule body for inflating or filling the capsule body with liquid; the suction head is located in front of the capsule body, and the suction head is provided with a plurality of suction holes communicating with the inner cavity of the suction head. The application is convenient to operate, changes the traditional hemostasis mode of filling and cooperating with a uterine contraction needle, and is completely consistent with the principle of uterine contraction in physics and physiology to contract the uterine cavity through negative pressure suction so as to achieve better direct uterine contraction effect as soon as possible, and greatly improves the hemostasis effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of medical devices, and particularly relates to a negative pressure uterine cavity tamponade hemostasis device. BACKGROUND

[0002] Postpartum hemorrhage is the main cause of maternal death worldwide, and the existing treatment method mainly uses water bag or gauze to compress and stop bleeding on one side, and hits the uterine contraction needle to promote the contraction of the uterine cavity to achieve the physiological true acceleration of the hemostasis. Since the water bag or gauze seems to be more intuitive compression hemostasis, but because of the compression of the bleeding site, the bleeding site is difficult to contract in practice due to the compression force, and even if the uterine contraction needle is hit, the coagulation and hemostasis speed is slow, especially for patients with a relaxed uterus, the above-mentioned hemostasis effect is even worse. SUMMARY

[0003] The purpose of the present application is to provide a negative pressure uterine cavity tamponade hemostasis device for the above-mentioned problems.

[0004] The above technical purpose of the present application is realized by the following technical scheme:

[0005] A negative pressure uterine cavity tamponade hemostasis device, comprising a cannula body, a suction head connected in communication to the front end of the cannula body, a bag body sleeved outside the connection area of the cannula body and the suction head, and a gas filling pipe connected to the bag body for filling gas or liquid into the bag body; the suction head is located on the front side of the bag body, a plurality of suction holes communicating with the inner cavity of the suction head are arranged on the suction head, the suction head and the cannula body are a straight pipe integrally connected in communication or a bent pipe at least bent at the position corresponding to the bag body, and the suction head is a strip pipe-shaped suction head.

[0006] In use, the present application is first inserted into position, that is, the suction head is located in the uterine cavity, the bag body is located in the internal orifice of the cervix (that is, the cervix is close to the uterus), and the rear end of the cannula body is outside the cervix. After being inserted into position, some existing gas filling devices are used to fill gas or liquid into the bag body. After the bag body is inflated, the cervix is blocked, so that the uterine cavity becomes a sealed space. Then, the rear end port of the cannula body is connected to the existing negative pressure suction device, the liquid and blood in the uterine cavity are sucked out through the cannula body and the suction head, so that the uterine cavity becomes a negative pressure cavity, the uterine cavity wall is physically contracted, the uterine wall is pressed, the uterus is efficiently contracted, and a good coagulation and hemostasis effect is achieved. Even if the uterine contraction needle is not hit, the actual hemostasis can be faster.

[0007] The tube body and the suction head of the above structure are convenient to process and low in cost. The strip-shaped suction head is easy to enter the uterus and has a good effect of shrinking the uterus when the negative pressure suction starts due to the multiple suction holes in the length direction, thereby avoiding the situation that the suction holes concentrated in a small area may cause the uterine cavity wall to be quickly pressed and blocked on the suction holes, while the other areas of the uterine cavity are not contracted.

[0008] The straight pipe or the bent pipe is designed to meet the needs of different operations, different postures of patients or individual differences of uteruses of patients, so the straight pipe or the bent pipe can be selected.

[0009] As a preferred, the connection area between the suction head and the tube body is sleeved with a shaped tube, the shaped tube is a hard strip tube or a gooseneck tube, and the capsule is sleeved outside the shaped tube or on one side of the shaped tube.

[0010] The tube body and the suction head can adopt a relatively safe silica gel material, the strength and thickness of which only need to ensure that the negative pressure suction process is not bent, the channel is smooth, and the connection area between the suction head and the tube body may be narrowed due to the extrusion of the water bag, and the connection area may also be bent due to a large force, causing the air supply to be not smooth, therefore, the hard strip tube or the gooseneck tube is sleeved on the above connection area to enhance the strength of the area and ensure the effective work of the device. The hard strip tube can be a straight pipe or a bent pipe, which is subject to the needs of the operation, but for most puerperae, the upper body is lying down and the thighs are arched, so the hard strip tube can be a bent pipe to have a certain included angle between the tube body and the suction head to facilitate the operation, and the design of the shaped tube not only enhances the strength of the area, but also facilitates the processing of the tube body and the suction head, which can be directly designed as a right angle and can reach the desired angle by sleeving into the shaped tube. If the shaped tube is a gooseneck tube, the included angle between the tube body and the suction head can be changed by bending the gooseneck tube, which can be folded to multiple angles to adapt to different puerperae or different states of the same puerpera. In other words, the hard strip tube can be multiple, each of which is designed to be different angles and can be selected.

[0011] As a preferred, the included angle between the suction head and the tube body in a natural state is less than 170 degrees and greater than 90 degrees.

[0012] Through the design of the above angle, the device is more in line with the ergonomic design, so that the suction head entering the uterus is as possible as in the center of the uterus, thereby the uterine wall is evenly stressed and squeezed when the negative pressure suction is performed, the whole uterine wall is uniformly contracted, a good uterine contraction effect is achieved, and the suction hole can fully play a role and is not easy to adhere to the uterine wall at the beginning of the negative pressure.

[0013] As preferred, the annular capsule is sleeved on the cannula body, the cannula body is provided with a slot along the length direction of the cannula body, the middle and front part of the inflation tube are embedded in the slot, and the rear end of the inflation tube is protruded from the cannula body for connecting the inflation or liquid filling device.

[0014] The annular capsule has good sealing effect on the internal orifice of the cervix, is beneficial to the rapid contraction of the uterine cavity under negative pressure, and improves the hemostasis efficiency.

[0015] As preferred, the front and rear sides of the capsule are respectively provided with a shaped limiting sleeve ring, the connecting area of the cannula body and the suction head is provided with an annular limiting slot, and the shaped limiting sleeve ring and the capsule are sleeved on the annular limiting slot.

[0016] The annular limiting slot is arranged on the corner of the cannula body and the suction head, which is beneficial to the installation and positioning of the capsule, ensures the sealing effect of the internal orifice of the cervix, and the inner ring part of the capsule can also be adhered to the cannula body.

[0017] The shaped limiting sleeve ring ensures that the capsule with limited volume effectively blocks the required position and is not easily excessively extended along the axial direction of the cannula body under the pressure of the cervical wall, and ensures efficient and reliable blocking of the internal orifice of the cervix. In addition, the shaped limiting sleeve ring can block the inner ring hole of the capsule in contact with the cannula body after cooperation with the capsule, and the capsule can be fixedly connected or simply sleeved with the cannula body. When the capsule is simply sleeved on the cannula body, the shaped limiting sleeve ring is equivalent to adding a sealing ring to the inner ring hole of the capsule at both ends, which further improves the sealing property of the cervix.

[0018] As preferred, the tube wall of the suction head is uniformly provided with a plurality of suction holes, the front end of the suction head is a blind end, the outer end face is provided with an arc-shaped guide surface, and the edge is connected to the outer wall of the suction head tube through an arc.

[0019] The arc-shaped guide surface is safer and more convenient when inserted, and the tissue structure will not be blocked on the port.

[0020] As preferred, the edge area of the suction head corresponding to each suction hole is uniformly provided with a plurality of arc-shaped bulges, and the suction hole is located at the center position between the corresponding bulges.

[0021] The bulges have the effect of forming a structure of raised supports around each suction hole, so that the suction hole is not easily blocked before the desired uterine contraction state is reached during negative pressure suction, the bulges can prop open the uterine wall adsorbed, and the gap between the bulges can form a flow channel. When the space in the uterine cavity is small enough, the uterine wall can completely seal the channel and the suction hole. In other words, the structure can effectively ensure that the suction head has a better negative pressure suction effect to ensure that the desired better uterine contraction state (the best uterine contraction state is that the uterine wall is completely adhered, and there is no gap in the uterine cavity) is reached, thereby efficiently achieving blood coagulation and hemostasis.

[0022] As a preferred embodiment, four bulges are arranged around each suction hole, and the top portions of the opposite two bulges are connected by a connecting strip to form a cross-shaped blocking strip outside the orifice of the suction hole.

[0023] The cross-shaped blocking strip structure further ensures that the suction head can continue to work as much as possible without being blocked when the desired uterine contraction state is not reached.

[0024] As a preferred embodiment, the rear end of the cannula body is provided with an indicating part, which is a protruding part or a flat part. The protruding part is formed by the cannula body partially protruding outward, and is located on the same side of the suction head as the cannula body. The center of the protruding part is located on the same plane as the center axes of the suction head and the cannula body. The flat part is formed by the cannula body partially concave, and the inner cavity of the flat part is in communication with the inner cavity of the cannula body. The plane where the center axes of the suction head and the cannula body coincide is coincident with the center of the flat part.

[0025] The design of the indicating part allows the device to be inserted, and the orientation of the suction head relative to the cannula body can be determined by the orientation of the indicating part, thereby conveniently ensuring that the suction head is located as much as possible in the middle of the uterine cavity to improve the negative pressure suction effect.

[0026] As a preferred embodiment, a hollow elastic support is arranged in the cannula body and the suction head, and the elastic support is a plastic spring.

[0027] The cannula body and the suction head of the present application can be made of commonly used silica gel material, and through repeated experiments, a better negative pressure suction effect for achieving uterine contraction can also be achieved. To ensure more safe and efficient results, an elastic support can also be arranged in the cannula body and the suction head, thereby ensuring effective negative pressure suction contraction of the uterus in the working state as much as possible, and preventing the device from being squeezed and blocked.

[0028] In summary, the present application has the following advantages:

[0029] 1, The application is used, first of all, the application is inserted into the site, that is, the suction head is located in the uterine cavity, the capsule is located in the cervical orifice, and the cannula body rear end is outside the cervix. After being inserted into the site, some existing inflation devices are used to inflate or liquid into the capsule. After the capsule is inflated, the cervix is blocked, so that the uterine cavity becomes a sealed space. Then connect the existing negative pressure suction device to the rear port of the cannula body. Through the cannula body and the suction head, the liquid and blood in the uterine cavity are sucked out to make the uterine cavity a negative pressure cavity, which physically promotes the contraction of the uterine wall, and the uterine wall is pressed against each other to achieve efficient uterine contraction, thereby achieving good blood clotting and hemostasis effect. Even if the uterine contraction needle is not used, the hemostasis can be achieved faster.

[0030] 2, The application is easy to operate, which changes the traditional hemostasis method of filling and cooperating with the uterine contraction needle, and completely conforms to the principle of uterine contraction in physics and physiology to contract the uterine cavity through negative pressure suction to achieve better direct uterine contraction effect as soon as possible, thereby greatly improving the hemostasis effect.

[0031] 3, The application has the advantages of simple structure, few components, low cost, easy operation and good hemostasis effect. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 The structure diagram of the application with the indicating part being a flat part.

[0033] Figure 2 The structure diagram of the application with the indicating part being a convex part.

[0034] Figure 3 The structure diagram of the application with the indicating part being a convex part.

[0035] Figure 4 The structure diagram of the application with the indicating part being a convex part.

[0036] Figure 5 The structure diagram of the application with the indicating part being a convex part.

[0037] Figure 6 The structure diagram of the application with the indicating part being a convex part. Figure 1 .

[0038] Figure 7 The structure diagram of the application with the indicating part being a convex part. Figure 2 .

[0039] Figure 8 The structure diagram of the application with the indicating part being a convex part.

[0040] Figure 9 The structure diagram of the application with the indicating part being a convex part. DETAILED DESCRIPTION

[0041] The application will be described in further detail below with reference to the drawings.

[0042] The embodiments are only used for explaining the application, and are not used for limiting the application. Those skilled in the art can make modifications to the embodiments without creative contribution, as long as the modifications are within the scope of the claims of the application.

[0043] Embodiment one:

[0044] The negative pressure uterine cavity tamponing hemostasis device comprises a cannula body 1, a suction head 3 connected to the front end of the cannula body, a capsule 2 sleeved outside the connection area 10 of the cannula body and the suction head, and an inflation tube 4 connected to the capsule for inflating or filling the capsule with liquid; the suction head is located at the front side of the capsule, the suction head is provided with a plurality of suction holes 31 communicating with the inner cavity of the suction head, the suction head is a straight pipe or a bent pipe at least at the position corresponding to the capsule, and the suction head is a strip-shaped suction head. The integrated design is more convenient to process, has low cost, and is easy to shape. The cannula body and the suction head of the above structure are convenient to process and have low cost. The strip-shaped suction head is easy to enter the uterus 91, and has a good effect of shrinking the uterus when starting negative pressure suction due to the multiple suction holes in the length direction; thus, the situation that the uterine cavity wall is quickly pressed and blocked on the suction hole and the other areas of the uterine cavity are not shrunk is avoided.

[0045] Embodiment two:

[0046] The difference between the above embodiment and the present embodiment is that a shaping tube 9 is sleeved outside the connection area between the suction head and the cannula body, the shaping tube is a hard strip tube or a swan neck tube, and the capsule is sleeved outside the shaping tube or arranged on one side of the shaping tube.

[0047] The intubation body and the suction head can adopt relatively safe silica gel material. The strength and thickness can ensure that the negative pressure suction process is not bent and the channel is smooth. Due to the extrusion of the water bag, the channel in the connection area of the suction head and the intubation body can be narrowed. In addition, the connection area can be bent due to excessive force, resulting in poor air supply. Therefore, a hard strip tube or a gooseneck tube is sleeved on the above connection area to enhance the strength of the area and ensure the effective work of the device. The hard strip tube can be a straight tube or a bent tube, which is subject to the needs of the operation. However, most of the parturient women lie on their backs with their thighs arched. Therefore, the hard strip tube can be a bent tube to form a certain angle between the intubation body and the suction head to facilitate the operation. The design of the shaped tube not only enhances the strength of the area, but also facilitates the processing of the intubation body and the suction head. The shaped tube can be directly designed as a right angle, and the desired angle can be achieved by sleeving the shaped tube. If the shaped tube is a gooseneck tube, the angle between the intubation body and the suction head can be changed by bending the gooseneck tube. The gooseneck tube can be folded to multiple angles to adapt to different parturient women or different states of the same parturient woman. In other words, the hard strip tube can be multiple, each designed as a different angle, and can be selected.

[0048] Embodiment three:

[0049] The difference between the above embodiment and the present embodiment is that the axial angle between the suction head and the intubation body in the natural state is less than 170 degrees and greater than 90 degrees. In the present embodiment, the axial angle between the intubation body and the suction head in the natural state is designed to be 110 degrees, which is more consistent with the angle between the cervical axis and the line connecting the inner end of the cervix to the center of the uterus in the state that most postpartum women bend their legs and lift their thighs upward during the operation.

[0050] Through the design of the above angle, the present device is more in line with the ergonomic design, so that the suction head entering the uterus is as close to the center of the uterus as possible, so that the uterine wall shrinks more evenly under the force during negative pressure suction, the uterine wall is squeezed evenly, the whole uterine wall shrinks uniformly, and a better uterine contraction effect is achieved. The suction hole can also fully play a role and is not easy to adhere to the uterine wall at the beginning of negative pressure.

[0051] Embodiment four:

[0052] The difference between the above embodiment and the present embodiment is that the capsule body is a ring-shaped capsule body sleeved on the intubation body, the intubation body is provided with an embedding groove 7 along the length direction of the intubation body, the middle and front parts of the inflation tube are embedded in the embedding groove, and the rear end of the inflation tube is protruded from the intubation body for connecting the inflation or liquid filling device.

[0053] The ring-shaped capsule body has good sealing effect on the internal orifice of the cervix, which is beneficial to the rapid contraction of the uterine cavity under negative pressure.

[0054] Embodiment five:

[0055] The difference between the above embodiment and the present embodiment is that the front and back sides of the capsule are each provided with a shaped limiting sleeve 21, and the connecting area of the cannula body and the suction head is provided with an annular limiting groove, and the shaped limiting sleeve and the capsule are sleeved on the annular limiting groove 6. The annular limiting groove is arranged on the corner of the cannula body and the suction head, which is convenient for the installation of the capsule and can conveniently and efficiently position the capsule. The sealing effect of the internal orifice of the cervix is ensured. The inner ring part of the capsule can also be adhered to the cannula body. The capsule as a whole is like a hollow disc.

[0056] The shaped limiting sleeve is sleeved on the cannula body or the suction head with interference or is fixed to the cannula body or the suction head.

[0057] The arrangement of the shaped limiting sleeve ensures that the capsule with limited volume effectively blocks the required position and is not easily excessively extended along the axial direction of the cannula body under the pressure of the cervical wall, thereby ensuring efficient and reliable blocking of the internal orifice of the cervix. When the present application has a shaped tube, the shaped tube can be sleeved on the annular limiting groove first, and then the shaped limiting sleeve and the capsule are sleeved on the shaped tube, which is more conducive to the stable installation of the shaped limiting sleeve and the capsule and does not affect the smoothness of the passage of the above connecting area.

[0058] Embodiment six:

[0059] The difference between the above embodiment and the present embodiment is that the wall of the suction head is uniformly provided with a plurality of suction holes, the front end of the suction head is a blind end for blocking, and the outer end face is provided with an arc-shaped guide-in surface 32, and the edge is connected to the outer wall of the suction head tube through an arc-shaped transition. The arc-shaped guide-in surface is safer and more convenient to insert, and the tissue structure will not be blocked in the port.

[0060] Embodiment seven:

[0061] The difference between the above embodiment and the present embodiment is that the edge area of the suction head corresponding to each suction hole is uniformly provided with a plurality of arc-shaped bulges 33, and the suction hole is located at the center position between the corresponding bulges.

[0062] The above bulges have the effect of having a raised support structure around each suction hole, so that the suction hole is not easily blocked before the required uterine contraction state is reached during negative pressure suction, and the bulges can support the adsorbed uterine wall, and the gap between the bulges can also form a flow channel. When the space in the uterine cavity is small enough, the uterine wall can completely paste and seal the channel and the suction hole. In other words, the arrangement of the above structure can effectively ensure that the suction head has a better negative pressure suction effect to ensure that the desired better uterine contraction state (the best uterine contraction state is that the uterine wall is completely pasted, and there is no gap in the uterine cavity) is reached, thereby efficiently achieving coagulation and hemostasis. The bottom edge of the bulge is connected to the outer peripheral wall of the suction head through a gentle arc-shaped transition.

[0063] Embodiment eight:

[0064] The difference between the above embodiment is that four bulges are arranged around each suction hole, and the top of the opposite two bulges is connected by a connecting strip to form a cross-shaped blocking strip 34 outside the suction hole. The design of the cross-shaped blocking strip structure further ensures that the suction head can continue to work as much as possible without being blocked when the uterine contraction state is not reached. Without the bulges, the suction holes of the suction head of the present application can be densely arranged to achieve better negative pressure suction effect.

[0065] Embodiment nine:

[0066] The difference between the above embodiment is that the insertion tube body rear end is provided with an indication part 11, which is a protruding part or a flat part; the protruding part is formed by the partial outward protrusion of the insertion tube body, and is located on the same side of the suction head as the insertion tube body, the center of the protruding part is located on the plane where the center axes of the suction head and the insertion body coincide; the flat part is formed by the partial concave of the insertion tube body, and the inner cavity of the flat part communicates with the inner cavity of the insertion tube body, and the plane where the center axes of the suction head and the insertion body coincide coincides with the center part of the flat part.

[0067] Through the design of the indication part, the orientation of the suction head relative to the insertion tube body can be determined after insertion by the orientation of the indication part, so that the suction head can be located as much as possible in the middle position of the uterine cavity to improve the negative pressure suction effect.

[0068] Embodiment ten:

[0069] The difference between the above embodiment is that a hollow elastic support 8 is arranged in the insertion tube body and the suction head, and the elastic support is a plastic spring.

[0070] The insertion tube body and the suction head of the present application can adopt common silica gel material, and through repeated experiments, better negative pressure suction can also achieve the effect of uterine contraction. In order to ensure more safe and efficient effect, an elastic support can also be arranged in the insertion tube body and the suction head, so as to as much as possible ensure effective negative pressure suction and contraction of the uterus in the working state, and not easy to be squeezed and blocked. The suction head and the insertion tube body of the present application are straight and long in overall visual, and can also be designed to be slightly curved in opposite directions, that is, the center axes of the suction head and the insertion tube body can also be arc-shaped, but the arc is small. This is convenient for insertion into the uterus and uterine cavity, and also more consistent with the human body structure.

[0071] In use, the application is first inserted into position, that is, the suction head is located in the uterine cavity, the capsule is located in the cervical orifice, the rear end of the cannula body is outside the cervix, and after being inserted into position, some existing inflation devices are used to inflate or fill the capsule with liquid, and after the capsule is inflated, the cervix is blocked, so that the uterine cavity becomes a sealed space. Then, the rear end port of the cannula body is connected to an existing negative pressure suction device, and the liquid and blood in the uterine cavity are sucked out through the cannula body and the suction head, so that the uterine cavity becomes a negative pressure cavity, physically promoting the contraction of the uterine cavity wall, mutual compression between the uterine walls, achieving high-efficiency uterine contraction, and achieving good blood coagulation and hemostasis effect. Even without a uterine contraction needle, hemostasis can be achieved relatively quickly.

Claims

1. A negative pressure intrauterine packing hemostatic device, characterized in that: The catheter comprises a catheter body (1), a suction head (3) connected to the front end of the catheter body, a capsule (2) sleeved on the connecting area (10) of the catheter body and the suction head, and an inflation tube (4) connected to the capsule for inflating or filling the capsule with liquid; the suction head is located on the front side of the capsule, the suction head is provided with a plurality of suction holes (31) communicating with the inner cavity of the suction head, the suction head is a straight pipe or a bent pipe at least in the position corresponding to the capsule, the catheter body and the suction head are made of relatively safe silica gel material, and the suction head is a strip-shaped suction head; The capsule is an annular capsule sleeved on the catheter body, the catheter body is provided with a groove (7) along the length direction of the catheter body, the middle and front parts of the inflation tube are embedded in the groove, and the rear end of the inflation tube is protruded from the catheter body for connecting an inflation or liquid filling device; The edge area of the suction head corresponding to each suction hole is uniformly provided with a plurality of arc-shaped bulges (33), and the suction hole is located at the center position between the corresponding bulges; Four bulges are arranged around each suction hole, and the top portions of the opposite two bulges are connected by a connecting strip to form a cross-shaped blocking strip (34) outside the hole of the suction hole; In use, the catheter is inserted into position, that is, the suction head is located in the uterine cavity, the capsule is located in the cervical orifice, and the rear end of the catheter body is located outside the cervix; The connecting area between the suction head and the catheter body is sleeved with a shaped tube (9), the shaped tube is a hard strip tube or a swan neck tube, and the capsule is sleeved on the shaped tube or arranged on one side of the shaped tube; and / or each of the front and rear sides of the capsule is provided with a shaped limiting sleeve ring (21), the connecting area of the catheter body and the suction head is provided with an annular limiting groove, and the shaped limiting sleeve ring and the capsule are sleeved on the annular limiting groove (6); The pipe wall of the suction head is uniformly provided with a plurality of suction holes, the front end of the suction head is a blind end, and the outer end face is provided with an arc-shaped guide surface (32), and the edge is connected to the outer wall of the suction head through an arc-shaped transition.

2. The negative pressure intrauterine packing hemostasis device according to claim 1, characterized in that: The axial angle between the suction head and the catheter body in the natural state is less than 170 degrees and greater than 90 degrees.

3. The negative pressure intrauterine tamponade hemostatic device according to claim 2, characterized in that: The rear end of the catheter body is provided with an indicating part (11), the indicating part is a protruding part or a flat part; the protruding part is formed by partially protruding outward from the catheter body, and is located on the same side of the suction head as the catheter body, the center of the protruding part is located on the plane where the center axes of the suction head and the catheter body are coincident; the flat part is formed by partially concave from the catheter body, the inner cavity of the flat part communicates with the inner cavity of the catheter body, and the plane where the center axes of the suction head and the catheter body are coincident coincides with the center part of the flat part.

4. The negative pressure uterine tamponade hemostasis device according to claim 1, characterized in that: The catheter body and the suction head are provided with a hollow elastic support (8), and the elastic support is a plastic spring.

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