CN214966149U

CN214966149U - U-shaped hepatic portal blocking device

Info

Publication number: CN214966149U
Application number: CN202120432055.5U
Authority: CN
Inventors: 王黎明
Original assignee: Cancer Hospital and Institute of CAMS and PUMC
Current assignee: Cancer Hospital and Institute of CAMS and PUMC
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-12-03
Anticipated expiration: 2031-02-26

Abstract

The utility model provides a U type hepatic portal blocking device relates to medical instrument technical field, and the main objective provides a convenient to use and does not occupy the blocking device of stabbing the screens position. This U type porta hepatis blocker includes: the capsule body is of a U-shaped structure capable of containing fluid, the two ends of the capsule body are respectively a first end and a second end, and a blocking space for realizing the hepatic portal blocking is formed between the first end and the second end; the catheter is fixedly arranged in a hollow structure on the balloon and is communicated with the inside of the balloon, and fluid can flow into the balloon or flow out of the balloon through the catheter; the occlusion space can be reduced with increasing fluid in the capsule until hepatic portal occlusion is achieved. The utility model is used for peritoneoscope hepatectomy operation also can be used to open abdomen hepatectomy operation, can help to realize going into liver blood and block.

Description

U-shaped hepatic portal blocking device

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a U type hepatic portal blocking device is related to.

Background

In conventional open hepatectomy, a physician typically needs to take steps to block blood flow into the liver in order to reduce the amount of bleeding during the procedure. The most commonly used blocking method is the primary blocking method: a belt is used for surrounding the first hepatic portal, and the belt is tightened when needed, so that hepatic blood flow is blocked, and hepatic wound bleeding can be obviously reduced. In general, after every 15-20 minutes of blocking, the band needs to be loosened to restore the liver blood supply for 5 minutes, so as to avoid the liver ischemic injury caused by long-time blocking of the liver blood flow. In order to reduce unnecessary surgical trauma, reduce pain of patients and reduce postoperative recovery time, laparoscopic hepatectomy is generally adopted at present, and in order to ensure that the operative field is clear and visible, hepatic blood flow needs to be well controlled, so that the surface of a liver wound is kept clean. Because of the long time required for liver resection, it is often necessary to set multiple occlusion cycles (i.e., repeatedly tightening/loosening the band multiple times) during the procedure.

Currently, there is no universal laparoscopic portal blocking band, and different medical centers use different alternative materials according to their respective experiences, such as: thin silicone tube, cotton thread, glove sleeve edge, thin catheter, etc. In application, the band is wound around the first hepatic portal and tightened, and then fixed in vivo by plastic clip (hem-o-lok) or in vitro by vascular clamp, and loosened after an occlusion period. The strength of the blocking belt is difficult to standardize and control in a balanced manner, so that the problem of first hepatic portal injury caused by poor blocking effect or excessive strength due to low strength can occur during use.

In order to solve the above problems, it is necessary to develop a novel blocking structure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a U type hepatic portal blocking device to solve the technical problem that the equipment operation that blocks that exists is complicated and injure the internal organs easily among the prior art. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a U type hepatic portal blocking device, include: the capsule body is of a U-shaped structure capable of containing fluid, the two ends of the capsule body are respectively a first end and a second end, and a blocking space for realizing the hepatic portal blocking is formed between the first end and the second end; the catheter is fixedly arranged in a hollow structure on the balloon and is communicated with the inside of the balloon, and fluid can flow into the balloon or flow out of the balloon through the catheter; the occlusion space can be reduced with increasing fluid in the capsule until hepatic portal occlusion is achieved.

Fluid can be inputed to the utricule through the pipe or flow in from the utricule, and at this in-process, the volume of utricule produces the change, and when the utricule was expanded gradually because of fluid inflow, first end and second end produced certain deformation and thus draw together each other at the in-process of inflation, and the space of blocking that lies in between first end and the second end at this moment can be under the extrusion of utricule and dwindle gradually. When the capsule body is placed at the position of the hepatic portal, blood at the hepatic portal is blocked under the action of the blocking space, so that the intraoperative hemorrhage of a patient is reduced; in addition, because the utricule is propped up and is expanded gradually by the fluid, consequently the lateral wall of utricule is smooth curved surface structure, can provide suitable dynamics of blocking, can protect the porta hepatis under the prerequisite of guaranteeing to block the effect, avoids because of the porta hepatis impaired because of the power is excessive. In addition, the capsule can provide a better buffer effect for the viscera, and avoid the viscera from being damaged.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

As a further improvement of the present invention, the bag body is made of a flexible silica gel material.

As a further improvement of the present invention, the conduit is fixed to be disposed at the middle portion of the balloon body, or the conduit is fixed to be disposed at the first end or the second end of the balloon body.

The catheter can be arranged in any position of the middle part or the end part of the balloon body according to different placement positions of the liver and corresponding opening positions of the poking card. The arrangement position of the catheter has high flexibility.

As a further improvement of the utility model, the outer diameter of the conduit is less than 10 mm. To accommodate a laparoscopic surgical stab card, the outer diameter of the catheter is set to no greater than 10 mm.

As a further improvement of the utility model, the free end of the conduit is provided with a plugging cap which can seal the conduit.

The plugging cap can prevent fluid in the capsule body from flowing out under the extrusion action of the capsule body, and the pressure at the porta hepatis is ensured to be consistent all the time.

As a further improvement of the present invention, the plugging cap can be connected to the catheter by means of a screw connection.

As a further improvement of the present invention, the plugging cap is fixedly disposed at the free end of the catheter and can be rotated relative to the catheter, when the plugging cap is rotated to the end of the catheter can be inserted into the catheter by inserting the plugging means to seal the catheter.

As a further improvement of the present invention, the plugging cap is a plate-shaped structure, and the plugging cap faces towards one side of the conduit and is provided with a limit ring, and the limit ring can be inserted into the conduit.

The plugging cap can be fixedly connected with the catheter by the various different structures.

As a further improvement of the present invention, the guide tube is made of a flexible material.

As a further improvement of the present invention, the balloon and the catheter are of an integral structure.

Compared with the prior art, the utility model provides a U type hepatic portal blocking device, this blocking device mainly include utricule and the pipe structure of being made by flexible material, and wherein the utricule is the U-shaped structure, and when the fluid flowed into the utricule through the pipe when internal, the utricule can expand under fluidic effect, and the first end and the second end that are located U-shaped structure both sides can be gathered together each other because of deformation to make the space of blocking that is located between first end and the second end reduce in order to reach the effect of blocking to the hepatic portal gradually. The utricule is blocked and is blocked with traditional band and compare, can provide one and last stable effort of blocking, can not cause the porta hepatis damage because of the dynamics is too big, also can not cause because of the dynamics undersize and block the effect poor. In addition, this blocker is comparatively convenient when using, not only can not harm the viscera and rent the tissue, and easy operation does not additionally occupy among the laparoscopic surgery and stabs the card position yet.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the U-shaped hepatic portal blocking device of the present invention;

fig. 2 is a schematic view of the capsule of fig. 1 after filling with fluid;

fig. 3 is a schematic view of the bladder of fig. 1 without the fluid;

FIG. 4 is a schematic view of the closure cap of FIG. 1;

FIG. 5 is a schematic diagram of a second structure of a blocking cap of the U-shaped hepatic portal blocking device of the present invention;

fig. 6 is a third schematic structural diagram of the blocking cap of the U-shaped hepatic portal blocking device of the present invention.

In the figure: 1. a capsule body; 11. a first end; 12. a second end; 2. a conduit; 3. a plugging cap; 31. a limit ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

FIG. 1 is a schematic view of the overall structure of the U-shaped hepatic portal blocking device of the present invention; as can be seen from the figure, the device sequentially comprises a balloon body, a catheter and an occlusion cap structure, wherein the catheter is communicated with the balloon body and the occlusion cap, and when the occlusion cap is opened, fluid can flow into or out of the balloon body through the catheter; the bag body is of a U-shaped structure as a whole.

Fig. 2 is a schematic view of the bladder of fig. 1 after being filled with fluid; at this time, the first and second ends of both sides of the balloon are in an expanded state and pressed toward the middle blocking space.

FIG. 3 is a schematic view of the bladder of FIG. 1 shown without the fluid; the width of the blocking space is now larger compared to fig. 2.

FIG. 4 is a schematic structural view of the containment cap of FIG. 1; the plugging cap can be fixed on the catheter in a threaded connection mode

FIG. 5 is a schematic diagram of a second structure of a blocking cap of the U-shaped hepatic portal blocking device of the present invention; FIG. 6 is a schematic diagram of a third structure of a blocking cap of the U-shaped hepatic portal blocking device of the present invention; one end of the plugging cap is rotatably connected with the conduit, and the orifice of the conduit can be sealed in a plugging mode when the plugging cap rotates to the end part of the conduit.

The technical solution of the present invention will be specifically described below with reference to the accompanying drawings.

As shown in fig. 1, the utility model provides a U-shaped hepatic portal blocking device, which comprises a U-shaped utricule 1 and a conduit 2 structure communicated with the inside of the utricule 1. Specifically, this utricule 1 is the U-shaped structure that can splendid attire fluid, and the both sides of U-shaped structure are first end 11 and second end 12 respectively, are formed with the space of blocking that is used for realizing that the hepatic portal blocks between first end 11 and the second end 12, utricule 1 can expand and produce certain deformation along with the increase of its inside fluid volume, and at this in-process, first end 11 and second end 12 produce deformation and draw together each other thereby the extrusion blocks the space, and the first hepatic portal that is located to block the space receives the extrusion blood flow and reduces. The fluid may comprise a gas or a liquid, and generally, a physiological saline solution is more preferable.

Fluid can be input into the capsule body 1 or flow out of the capsule body 1 through the conduit 2, in the process, the volume of the capsule body 1 is changed, when the capsule body 1 is gradually expanded due to the inflow of the fluid, the first end 11 and the second end 12 are deformed to be close to each other in the expansion process, and at the moment, the blocking space between the first end 11 and the second end 12 is gradually reduced under the extrusion of the capsule body 1, and the process is shown in fig. 2 and 3. When the capsule body 1 is placed at the position of the hepatic portal, blood at the hepatic portal is blocked under the action of the blocking space, so that the intraoperative hemorrhage of a patient is reduced; in addition, because utricule 1 is propped up by the fluid and is expanded gradually, consequently utricule 1's lateral wall is smooth curved surface structure, can provide suitable dynamics of blocking, can protect the hepatic portal under the prerequisite of guaranteeing to block the effect, avoids because of the hepatic portal because of the power is excessive impaired. In addition, the capsule body 1 can provide a better buffer effect for the viscera, and avoid the viscera from being damaged.

In order to ensure that the capsule 1 achieves the above-mentioned effect, as an alternative embodiment, the capsule 1 is made of a flexible silicone material.

As an alternative embodiment, the catheter 2 is fixedly arranged in the middle of the balloon 1, or the catheter 2 is fixedly arranged at the first end 11 or the second end 12 of the balloon 1, and the balloon 1 is provided with an opening communicated with the catheter 2.

The catheter 2 can be installed at any position of the middle or end of the balloon 1 according to the placing position of the liver and the corresponding opening position of the poking card. The arrangement position of the catheter 2 has a high degree of flexibility.

It should be noted that the occluder is suitable for open abdominal surgery as well as for laparoscopic surgery, and when it is used for laparoscopic surgery, it is necessary to first introduce the occluder into the abdominal cavity via a stab card, and then to introduce the fluid into the balloon 1 via a catheter to achieve the harvesting of the portal.

For ease of use, as an alternative embodiment, the outer diameter of the catheter 2 is less than 10 mm. To accommodate a laparoscopic surgical stab card, the outer diameter of the catheter 2 is set to be no greater than 10 mm.

In the laparoscopic surgery, the position of the poking card is limited, and in order to reduce the pain of a patient as much as possible, when the blood blocking device is used for blood blocking, the catheter 2 can be completely inserted into the abdominal cavity through the poking card, and the corresponding poking card can be continuously used; when the occlusion needs to be removed, the catheter 2 can be pulled out of the body again through the stab and the fluid can be led out to remove the occlusion. Subsequent reintroduction of fluid can then allow for the next cycle of occlusion. During the operation, the operation can be repeated for a plurality of times until the operation is completed.

In order to reduce irritation of the catheter 2 to the abdominal cavity and avoid damage to the interior of the abdominal cavity, the catheter 2 is, as an alternative, made of a flexible material.

In order to avoid the outflow of fluid from the balloon 1, an optional embodiment is provided in which the free end of the catheter 2 is fitted with a closure cap 3 capable of closing the catheter 2. The plugging cap 3 can prevent the fluid in the capsule body 1 from flowing out under the extrusion action of the capsule body 1, and the pressure at the hepatic portal is ensured to be consistent all the time.

As an alternative embodiment, the occlusion cap 3 can be connected to the catheter 2 by means of a screw connection, as shown in fig. 4.

As an alternative embodiment, the plugging cap 3 is fixedly arranged at the free end of the catheter 2 and can be rotated relative to the catheter 2, and when the plugging cap 3 is rotated to the end of the catheter 2, can be inserted into the catheter 2 by means of insertion to close the catheter 2.

As an alternative embodiment, the plugging cap 3 is a plate-like structure, and a side thereof facing the catheter 2 is provided with a limiting ring 31, and the limiting ring 31 can be inserted into the catheter 2, as shown in fig. 5 and 6.

The plugging cap 3 can be fixedly connected with the catheter 2 by means of the various different structures described above.

In order to ensure the sealing effect of the balloon 1, as an alternative embodiment, the balloon 1 and the catheter 2 are of an integral structure.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

A U-shaped porta hepatis blocker, comprising:

the capsule body is of a U-shaped structure capable of containing fluid, the two ends of the capsule body are respectively a first end and a second end, and a blocking space for realizing the hepatic portal blocking is formed between the first end and the second end;

the catheter is fixedly arranged in a hollow structure on the balloon and is communicated with the inside of the balloon, and fluid can flow into the balloon or flow out of the balloon through the catheter; the occlusion space can be reduced with increasing fluid in the capsule until hepatic portal occlusion is achieved.
2. The U-shaped porta hepatis blocker according to claim 1, wherein the capsule is made of a flexible silicone material.
3. A U-shaped porta hepatis blocker according to claim 1, wherein the catheter is fixedly disposed at a middle portion of the balloon, or alternatively, the catheter is fixedly disposed at a first end or a second end of the balloon.
4. The U-shaped porta hepatis blocker according to claim 1, wherein the outer diameter of the conduit is less than 10 mm.
5. A U-shaped hepatic portal block according to claim 1, wherein a blocking cap is further mounted at the free end of the conduit to close the conduit.
6. The U-shaped porta hepatis blocker according to claim 5, wherein the blocking cap is connectable to the catheter tube by means of a threaded connection.
7. A U-shaped porta hepatis blocker according to claim 5, wherein the blocking cap is fixedly arranged at a free end of the duct and is rotatable with respect to the duct, the blocking cap being insertable into the duct by insertion to close the duct when rotated to an end of the duct.
8. A U-shaped hepatic portal block according to claim 7, wherein the blocking cap is a plate-like structure, and a side facing the conduit is provided with a limiting ring which can be inserted into the conduit.
9. The U-shaped porta hepatis blocker according to claim 1, wherein the duct is made of a flexible material.
10. A U-shaped porta hepatis blocker according to claim 1, wherein the balloon is of unitary construction with the catheter.