Intestinal obstruction catheter kit and medical device

Abstract

The invention discloses an intestinal obstruction catheter kit and a medical device, and relates to the technical field of medical instruments. The intestinal obstruction catheter kit comprises a first balloon catheter and a second balloon catheter, a first far-end balloon and a first near-end balloon which are spaced from each other are arranged on the outer surface of a first catheter body of the first balloon catheter, the first far-end balloon is close to the far-end end of the first catheter body, and the first near-end balloon is located at the near end of the first far-end balloon; the first far-end balloon and / or the first near-end balloon are / is used for being anchored with the intestinal wall; the outer surface of the far end of a second catheter body of the second balloon catheter is at least provided with a second far-end balloon, and the second far-end balloon is used for being anchored with the intestinal wall; the first catheter body is further provided with a first channel penetrating in the axial direction, and the first channel is used for allowing the second balloon catheter to pass through and enabling the second far-end balloon to reach the far end of the first balloon catheter. According to the intestinal obstruction catheter suite, the advancing speed of the intestinal obstruction catheter suite can be obviously increased by anchoring the balloon and the intestinal wall and then pulling the catheter back.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an intestinal obstruction catheter kit and medical device. Background Technology

[0002] Intestinal obstruction is a common digestive disease in clinical practice. Currently, gastrointestinal decompression is the main treatment principle for acute intestinal obstruction. By reducing intestinal pressure and reducing the accumulation of gas and fluid in the obstructed intestinal tract, local blood circulation can be restored in a timely manner, thereby achieving the purpose of treatment.

[0003] Gastrointestinal decompression can be achieved using a gastrointestinal decompression tube or an intestinal obstruction catheter. A gastrointestinal decompression tube allows gas and fluid from the stomach to be drained through a negative pressure device. This treatment method has good clinical efficacy for high intestinal obstruction, but its disadvantages include its relatively short length, ineffective drainage of distal intestinal contents, and incomplete decompression, often leading to worsening of the condition and necessitating surgical intervention. A nasoenteric obstruction catheter overcomes the shortcomings of gastrointestinal decompression tubes. Its sufficient length allows it to pass through the obstruction site to reach distal areas for continuous and effective decompression. It also allows for the injection of contrast agents to observe intestinal patency and determine the contrast site.

[0004] Intestinal obstruction catheters also have limitations. They primarily rely on the peristalsis of the small intestine to advance and reach the proximal end of the obstruction. Current clinical data shows that relying on intestinal peristalsis to propel the catheter is very slow, averaging only about 10 cm per day. This results in the catheter taking a long time to reach the obstruction site for diagnosis and intervention, indirectly prolonging hospital stays and increasing the patient's financial burden. Furthermore, in some clinical cases, the obstruction cannot be relieved by the intestinal obstruction catheter, mainly due to severe external intestinal wall adhesions, a narrow passage in the obstructed section, and compression from external intestinal masses.

[0005] Therefore, providing an intestinal obstruction catheter that can increase forward speed and / or effectively open the obstruction is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] This invention discloses an intestinal obstruction catheter kit and a medical device to solve the technical problem of slow forward speed in intestinal obstruction catheters in related technologies.

[0007] To solve the above problems, the present invention adopts the following technical solution: The first aspect of the present invention discloses an intestinal obstruction catheter kit.

[0008] The intestinal obstruction catheter kit of the present invention includes a first balloon catheter, the first balloon catheter including a first catheter body, a first distal balloon and a first proximal balloon spaced apart from each other on the outer surface of the first catheter body, the first distal balloon being close to the distal end of the first catheter body, the first proximal balloon being located at the proximal end of the first distal balloon, the first distal balloon and / or the first proximal balloon being used to anchor to the intestinal wall and to retract the intestine; the intestinal obstruction catheter kit further includes a second balloon catheter, the second balloon catheter including a second catheter body, the distal outer surface of the second catheter body having at least a second distal balloon, the second distal balloon being used to anchor to the intestinal wall and to retract the intestine; the first catheter body also has a first channel extending axially, the first channel being used for the second balloon catheter to pass through and for the second distal balloon to reach the distal end of the first balloon catheter.

[0009] According to an optional embodiment, the second balloon catheter further includes a second proximal balloon located proximal to the second distal balloon. The second proximal balloon is used to dilate the obstruction site, and the elasticity of the second proximal balloon is less than that of the second distal balloon, and / or the rigidity of the second proximal balloon is greater than that of the second distal balloon.

[0010] According to one alternative implementation, the second distal balloon is a compliant balloon and the second proximal balloon is a non-compliant balloon; or, the second distal balloon is a compliant balloon and the second proximal balloon is a semi-compliant balloon.

[0011] According to one optional embodiment, the second distal balloon is a silicone balloon, a rubber balloon, a latex balloon, a thermoplastic elastomer balloon, or a polyurethane balloon; the second proximal balloon is a polyetheramide balloon, a nylon balloon, a polyamide balloon, or a polyethylene terephthalate balloon.

[0012] According to an optional embodiment, the first balloon catheter further includes a first connector located at the proximal end of the first catheter body, with one end of the first connector for connecting to an external device and the other end communicating with the first channel, the first distal balloon, and / or the first proximal balloon.

[0013] According to an optional embodiment, the first catheter body is further provided with a through hole, the through hole penetrating the wall of the first catheter body and communicating with the first channel, the through hole being located between the first distal balloon and the first proximal balloon.

[0014] According to an optional implementation, the first connector includes a first interface, a second interface, and a third interface, wherein the first interface is connected to the first channel, the second interface is connected to the first distal balloon, and the third interface is connected to the first proximal balloon.

[0015] According to an optional embodiment, the first connector further includes a fourth interface, which is connected to the first channel. A one-way valve is provided at the fourth interface. The one-way valve has a closed state and an open state. When the one-way valve is in the open state, the one-way valve is configured such that external gas enters the first channel through the one-way valve.

[0016] According to an alternative embodiment, the second balloon catheter further includes a second connector located at the proximal end of the second catheter body. The second connector has a fifth interface, one end of which is used to connect to an external device, and the other end is in communication with the second distal balloon.

[0017] According to an optional embodiment, the second balloon catheter further includes a second connector located at the proximal end of the second catheter body. The second connector has a fifth interface and a sixth interface. One end of the fifth interface is used to connect to an external device, and the other end is in communication with the second distal balloon. One end of the sixth interface is used to connect to an external device, and the other end is in communication with the second proximal balloon.

[0018] A second aspect of the present invention discloses a medical device.

[0019] The medical device of the present invention includes a suction device and an intestinal obstruction catheter kit, wherein the intestinal obstruction catheter kit is the intestinal obstruction catheter kit described in any of the technical solutions of the present invention, and the suction device is used to communicate with the first channel to aspirate the contents of the cavity.

[0020] The technical solution adopted in this invention can achieve the following beneficial effects: When the intestinal obstruction catheter kit of the present invention is inserted into the intestine, the distal end of the first balloon catheter is first introduced into the duodenal segment, the first distal balloon is inflated and anchored to the intestinal tract, and then the first balloon catheter is pulled backward, which lifts and straightens the intestinal tract located distal to the first distal balloon, while compressing and shortening the intestinal tract located proximal to the first distal balloon. In this way, the second balloon catheter can be pushed further into the intestine through the first channel of the first balloon catheter. Further, the second distal balloon is inflated and anchored to the intestinal tract, and then the second balloon catheter is pulled backward, which lifts and straightens the intestinal tract located distal to the second distal balloon, while compressing and shortening the intestinal tract located proximal to the second distal balloon. Then the first distal balloon is released from anchoring to the intestinal tract, which allows the first balloon catheter to be pushed further into the intestine along the second balloon catheter. By performing the above steps and alternately advancing the first and second balloon catheters, the advancing speed of the intestinal obstruction catheter kit can be significantly improved, allowing the intestinal obstruction catheter kit to reach the obstruction site more quickly.

[0021] Furthermore, the preferred technical solution of the present invention also has the following beneficial effects: In the intestinal obstruction catheter kit of the present invention, the second balloon catheter descends to the obstruction site, positioning the second distal balloon distal to the obstruction and the second proximal balloon at the obstruction site. The second distal balloon is inflated and anchored to the intestinal tract, and then the second proximal balloon is inflated. The expansion of the second proximal balloon opens the obstruction. This method of opening the obstruction has two advantages: firstly, the anchoring effect of the second distal balloon prevents the second proximal balloon from slipping due to tissue compression, thus avoiding displacement of the second proximal balloon from the obstruction site; secondly, because the elasticity of the second proximal balloon is less than that of the second distal balloon, and / or the rigidity of the second proximal balloon is greater than that of the second distal balloon, the second proximal balloon has better support performance compared to the second distal balloon, avoiding the problem that the second proximal balloon is unable to open the obstruction site. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the first balloon catheter according to an embodiment of this application; Figure 2 This is a cross-sectional view of the first catheter body according to an embodiment of this application; Figure 3 This is a schematic diagram of the second balloon catheter according to an embodiment of this application; Figure 4This is a cross-sectional view of the second catheter body according to an embodiment of this application; Figure 5 This is a schematic diagram of a second balloon catheter according to another embodiment of this application; Figure 6 This is a cross-sectional view of the second catheter body according to another embodiment of this application; Figure 7 This is a first state diagram of the intestinal obstruction catheter kit inserted into the cavity according to an embodiment of this application; Figure 8 This is a second state diagram of the intestinal obstruction catheter kit inserted into the cavity according to an embodiment of this application; Figure 9 This is a third-state diagram of the intestinal obstruction catheter kit inserted into the cavity according to an embodiment of this application; Figure 10 This is a fourth state diagram of the intestinal obstruction catheter kit inserted into the cavity according to an embodiment of this application; Figure 11 This is a fifth state diagram of the intestinal obstruction catheter kit inserted into the cavity according to an embodiment of this application; Figure 12 This is a sixth state diagram of the intestinal obstruction catheter kit inserted into the cavity according to an embodiment of this application; Figure 13 This is a first state diagram of the intestinal obstruction catheter kit inserted into the lumen according to another embodiment of this application; Figure 14 This is a second state diagram of the intestinal obstruction catheter kit inserted into the lumen according to another embodiment of this application; Figure 15 This is a third state diagram of the intestinal obstruction catheter kit inserted into the cavity according to another embodiment of this application.

[0024] In the diagram: 100, First balloon catheter; 110, First catheter body; 111, First channel; 112, Through hole; 113, Third channel; 114, Fourth channel; 120, First distal balloon; 130, First proximal balloon; 140, First connector; 141, First interface; 142, Second interface; 143, Third interface; 144, Fourth interface; 145, One-way valve; 200, Second balloon catheter; 210, Second catheter body; 211, Second channel; 212, Fifth channel; 213, Sixth channel; 220, Second distal balloon; 230, Second proximal balloon; 240, Second connector; 241, Fifth interface; 242, Sixth interface; 300, Compression section. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0026] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0027] In the various embodiments of this application, "near end" and "far end" refer to the distance of each component from the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".

[0028] Traditional intestinal obstruction catheters rely on the peristalsis of the small intestine for advancement, which is very slow. To address this, a related technology provides an intestinal obstruction catheter kit, comprising a first balloon catheter and a second balloon catheter. The first balloon catheter has a delivery channel for the second balloon catheter to pass through, allowing the second balloon catheter to enter the obstruction site in the intestine via the delivery channel, thus increasing the advancement speed of the intestinal obstruction catheter kit. However, the inventors discovered in their research that in cases of intestinal strangulation or intestinal folding, the second balloon catheter has difficulty directly reaching the obstruction site through the delivery channel. Forcibly pushing the second balloon catheter can easily cause intestinal damage.

[0029] To address this, this application provides an intestinal obstruction catheter kit. This intestinal obstruction catheter kit anchors the intestinal wall with a balloon and then pulls the catheter back, which can lift and straighten the intestinal tube upwards. Therefore, even in cases of intestinal strangulation or intestinal folding, the forward speed of the intestinal obstruction catheter kit can still be significantly improved.

[0030] The following is in conjunction with the appendix Figures 1 to 15 The intestinal obstruction catheter kit and medical device provided in this application will be described in detail through specific embodiments and application scenarios.

[0031] The first aspect of this embodiment provides an intestinal obstruction catheter kit.

[0032] The intestinal obstruction catheter kit of this embodiment includes a first balloon catheter 100, such as... Figure 1 As shown. The first balloon catheter 100 includes a first catheter body 110, and a first distal balloon 120 and a first proximal balloon 130 spaced apart from each other are provided on the outer surface of the first catheter body 110, as shown. Figure 1 As shown. The first distal balloon 120 is located near the distal end of the first catheter body 110, and the first proximal balloon 130 is located at the proximal end of the first distal balloon 120. The first distal balloon 120 and / or the first proximal balloon 130 are used to anchor to the intestinal wall and are capable of retracting the intestine.

[0033] For example, the first distal balloon 120 and the first proximal balloon 130 are compliant balloons. For example, the first distal balloon 120 and the first proximal balloon 130 are made of an elastic material, such as silicone, rubber, latex, thermoplastic elastomer, polyurethane, etc. Figure 1 As shown, in its natural state, the first distal balloon 120 and the first proximal balloon 130 are attached to the outer surface of the first catheter body 110 to facilitate the passage of the first balloon catheter 100 through the cavity. After the first balloon catheter 100 reaches the cavity, gas or liquid is introduced into the first distal balloon 120 and / or the first proximal balloon 130 to inflate the first distal balloon 120 and / or the first proximal balloon 130 so that the first distal balloon 120 and / or the first proximal balloon 130 abut and anchor to the intestinal tract.

[0034] In some embodiments, the first catheter body 110 further has a first channel 111 extending axially, such as Figure 2 As shown. The distal end of the first channel 111 is connected to a suction device, which can extract the contents of the cavity. Specifically, the contents of the cavity are sucked out through the distal end of the first channel 111.

[0035] In some embodiments, the first catheter body 110 is further provided with a through hole 112, such as Figure 1 As shown. There are multiple through holes 112, which are spaced apart. The through holes 112 penetrate the wall of the first conduit body 110 and communicate with the first channel 111, so that during the suction process, the contents of the cavity can not only be sucked out from the distal end of the first channel 111, but also enter the first channel 111 through the through holes 112 and be sucked out.

[0036] In some embodiments, the through-hole 112 is located between the first distal balloon 120 and the first proximal balloon 130, such as... Figure 1As shown. For example, when it is necessary to observe the anterior course of the intestine or the condition of obstruction, contrast agent can be injected into the first channel 111. The contrast agent can flow distally along the first channel 111, flowing out through the through-hole 112 into the intestine distal to the first proximal balloon 130, or flowing out from the distal end of the first channel 111 into a further segment of the intestine. Then, under X-ray, the anterior course of the intestine or the condition of obstruction can be observed. For example, at this time, the first distal balloon 120 remains in a neutral state, and the first proximal balloon 130 remains inflated. The first proximal balloon 130 can block the intestine, preventing contrast agent backflow; the first distal balloon 120 remains in a neutral state, not obstructing the flow of contrast agent.

[0037] The intestinal obstruction catheter kit of this embodiment also includes a second balloon catheter 200, such as Figure 3 As shown. The second balloon catheter 200 includes a second catheter body 210, and the distal outer surface of the second catheter body 210 is provided with at least a second distal balloon 220, as shown. Figure 3 As shown. The second distal balloon 220 is used to anchor to the intestinal wall and is capable of retracting the intestine. Exemplarily, the second distal balloon 220 is located at the distal end of the second catheter body 210, so that when the first balloon catheter 100 is pushed along the second balloon catheter 200, it can be pushed further.

[0038] The second balloon catheter 200 enters through the first channel 111 and brings the second distal balloon 220 to the distal end of the first balloon catheter 100. Supported by the first balloon catheter 100, the second balloon catheter 200 can quickly reach the distal end of the first balloon catheter 100.

[0039] In this embodiment, the intestinal obstruction catheter is rapidly delivered to the site of intestinal obstruction via the following method: Step 100: Under the guidance of X-ray or endoscopy, the distal end of the first balloon catheter 100 is inserted into the duodenal segment, such as... Figure 7 As shown.

[0040] Step 200: Inflate the first distal balloon 120 and anchor it to the intestinal tract, then pull the first balloon catheter 100 posteriorly by 5-10 cm, so that the intestinal tract proximal to the first distal balloon 120 forms a compressed segment 300, such as... Figure 8 As shown.

[0041] Step 300: Insert the second balloon catheter 200 into the first channel 111, and push the second balloon catheter 200 along the first channel 111 until the distal end of the second balloon catheter 200 is located at the distal end of the first balloon catheter 100, such as... Figure 9 As shown.

[0042] By pulling back in step 200, the intestinal segment located at the distal end of the first distal balloon 120 can be pulled upward and straightened, while the intestinal segment located at the proximal end of the first distal balloon 120 is compressed and shortened. This allows the second balloon catheter 200 to be quickly pushed to a more distant part of the intestine through the first channel 111 of the first balloon catheter 100.

[0043] Step 400: Inflate the second distal balloon 220 and anchor it to the intestinal tract, as follows: Figure 10 As shown; then the second balloon catheter 200 is pulled back 5-10cm, so that the intestinal segment proximal to the second distal balloon 220 forms a compressed segment 300, as shown. Figure 11 As shown.

[0044] Step 500: Depress the first distal balloon 120 to release the first distal balloon 120 from the intestinal tract, and then push the first balloon catheter 100 along the second balloon catheter 200 to: the first distal balloon 120 is located at the proximal end of the second distal balloon 220, and the first distal balloon 120 is close to the second distal balloon 220.

[0045] By pulling back in step 400, the intestinal segment located at the distal end of the second distal balloon 220 can be pulled upward and straightened, while the intestinal segment located at the proximal end of the second distal balloon 220 is compressed and shortened. This allows the first balloon catheter 100 to be quickly pushed along the second balloon catheter 200 to a more distant part of the intestine.

[0046] Step 600: Re-inflate the first distal balloon 120 and anchor it to the intestinal tract, as follows: Figure 12 As shown; then the second distal balloon 220 is deflated, releasing the second distal balloon 220 from the intestinal tract. Steps 300 to 500 are repeated, allowing the first balloon catheter 100 and the second balloon catheter 200 to advance alternately.

[0047] By performing the above steps, the advancement speed of the intestinal obstruction catheter kit can be significantly improved, allowing it to reach the obstruction site more quickly. Even in cases of intestinal strangulation or intestinal folding, the first distal balloon 120 can be anchored to the intestinal wall, and then the first balloon catheter 100 can be pulled back to lift and straighten the intestinal tube, enabling the intestinal obstruction catheter kit to advance rapidly through various complex intestinal passages.

[0048] During the advancement of the intestinal obstruction catheter kit, the aforementioned second distal balloon 220 serves as an anchoring balloon. However, it is not limited to this; the second distal balloon 220 can also descend to the obstruction site, and the obstruction can be opened by the expansion of the second distal balloon 220.

[0049] In some embodiments, the second balloon catheter 200 further includes a second proximal balloon 230, which is located proximal to the second distal balloon 220, such as... Figure 5As shown. The second proximal balloon 230 is used to dilate the obstruction site, and the elasticity of the second proximal balloon 230 is less than that of the second distal balloon 220, and / or the rigidity of the second proximal balloon 230 is greater than that of the second distal balloon 220.

[0050] For example, the second distal balloon 220 is a compliant balloon. For instance, the second distal balloon 220 is a silicone balloon, a rubber balloon, a latex balloon, a thermoplastic elastomer balloon, or a polyurethane balloon. For example, the second proximal balloon 230 is a non-compliant balloon; or the second proximal balloon 230 is a semi-compliant balloon. For instance, the second proximal balloon 230 is a polyetheramide balloon, a nylon balloon, a polyamide balloon, or a polyethylene terephthalate balloon.

[0051] For example, a compliant balloon is one whose volume and shape change significantly with increasing inflation pressure, exhibiting good deformability and wall adhesion; a non-compliant balloon is one whose volume and diameter hardly change with increasing pressure after reaching the nominal inflation pressure, exhibiting extremely strong morphological stability; a semi-compliant balloon is between a compliant and a non-compliant balloon, where the balloon's volume changes to some extent with increasing pressure, but the change is much smaller than that of a compliant balloon, combining a certain degree of wall adhesion and morphological stability.

[0052] The aforementioned second distal balloon 220 serves as an anchoring balloon, and the second proximal balloon 230 serves as a dilation balloon. However, it is not limited to this; the second proximal balloon 230 can also be used as an anchoring balloon during the advancement of the intestinal obstruction catheter kit.

[0053] For example, when the second balloon catheter 200 is passed through the first channel 111, the second proximal balloon 230 can be folded outside the second catheter body 210 to reduce the outer diameter of the second balloon catheter 200 so that it can pass smoothly through the first channel 111.

[0054] For example, such as Figures 13-15 As shown, when the intestinal obstruction catheter kit advances, the second balloon catheter 200 descends to the obstruction site, and the second distal balloon 220 is positioned distal to the obstruction site, while the second proximal balloon 230 is positioned at the obstruction site. The second distal balloon 220 is inflated and anchored to the intestinal tract, and then the second proximal balloon 230 is inflated. After the second proximal balloon 230 expands, the obstruction can be opened.

[0055] This method of opening the obstruction has two advantages. First, due to the anchoring effect of the second distal balloon 220, the second proximal balloon 230 is prevented from slipping due to tissue compression, thus avoiding displacement of the second proximal balloon 230 from the obstruction site. Second, because the elasticity of the second proximal balloon 230 is less than that of the second distal balloon 220, and / or the hardness of the second proximal balloon 230 is greater than that of the second distal balloon 220, the second proximal balloon 230 has better support performance compared to the second distal balloon 220, thus avoiding the problem that the second proximal balloon 230 is unable to open the obstruction site.

[0056] In some embodiments, the first balloon catheter 100 further includes a first connector 140, such as Figure 1 As shown. The first connector 140 is located at the proximal end of the first catheter body 110, and one end of the first connector 140 is used to connect to an external device, and the other end is in communication with the first channel 111, the first distal balloon 120 and / or the first proximal balloon 130.

[0057] For example, the first connector 140 includes a first interface 141, a second interface 142, and a third interface 143, such as Figure 1 As shown. The first interface 141 is connected to the first channel 111, the second interface 142 is connected to the first distal balloon 120, and the third interface 143 is connected to the first proximal balloon 130. Specifically, the first channel 111 is formed in the middle of the first catheter body 110, and the third channel 113 and the fourth channel 114 are formed on the wall of the first catheter body 110, as shown. Figure 2 As shown. The two ends of the third channel 113 are connected to the second interface 142 and the first distal balloon 120, respectively, and the two ends of the fourth channel 114 are connected to the third interface 143 and the first proximal balloon 130, respectively. Preferably, the first channel 111, the third channel 113, and the fourth channel 114 are independent of each other, so that the aspiration of contents, the inflation of the first distal balloon 120, and the inflation of the first proximal balloon 130 can be controlled independently.

[0058] In some embodiments, the first connector 140 further includes a fourth interface 144, such as Figure 1 As shown. The fourth interface 144 is connected to the first channel 111.

[0059] The inventors discovered during their research that when aspirating contents through the first channel 111, the distal end of the first catheter body 110 may be aspirated to the intestinal wall, causing blockage and increasing the negative pressure within the first channel 111. This could lead to excessive aspiration of the cavity wall, potentially causing bleeding and other risks. In this embodiment, the intestinal obstruction catheter is fitted with a fourth interface 144. When the negative pressure within the first channel 111 is too high, air can be injected into the first channel 111 through the fourth interface 144 to prevent bleeding risks caused by excessive negative pressure during aspiration.

[0060] Preferably, a one-way valve 145 is provided at the fourth interface 144, such as Figure 1 As shown. The one-way valve 145 has a closed state and an open state, and when the one-way valve 145 is in the open state, the one-way valve 145 is configured such that outside gas enters the first channel 111 through the one-way valve 145. For example, the one-way valve 145 can be manually or automatically controlled to open and close based on data detected by a sensor.

[0061] In this embodiment of the intestinal obstruction catheter fitting, a one-way valve 145 is provided at the fourth interface 144. When the negative pressure in the first channel 111 is too high, the one-way valve 145 is in the open state, allowing external air to be introduced into the first channel 111 to prevent the negative pressure in the first channel 111 from becoming too high. When the negative pressure in the first channel 111 is normal or in a non-suction state, the one-way valve 145 can be in the closed state.

[0062] In some embodiments, the second balloon catheter 200 further includes a second connector 240, such as Figure 3 As shown. The second connector 240 is located at the proximal end of the second catheter body 210. The second connector 240 has a fifth interface 241, one end of which is used to connect to an external device, and the other end is connected to the second distal balloon 220. This type of second connector 240 is suitable for situations where only the second distal balloon 220 is provided on the second catheter body 210.

[0063] For example, such as Figure 4 As shown, the second catheter body 210 has a second channel 211 in the middle, and the second channel 211 extends along the axial direction of the second catheter body 210. The second channel 211 can be used to allow the guidewire to pass through.

[0064] For example, the second catheter body 210 has a fifth channel 212 on its wall, and the two ends of the fifth channel 212 are respectively connected to the fifth interface 241 and the second distal balloon 220. Preferably, the second channel 211 and the fifth channel 212 are independent of each other, so that the inflation of the second distal balloon 220 can be controlled independently.

[0065] Not limited to this, the second catheter body 210 may also only have a fifth channel 212, without having a second channel 211.

[0066] In some embodiments, the second balloon catheter 200 further includes a second connector 240, such as Figure 5 As shown. The second connector 240 is located at the proximal end of the second conduit body 210. The second connector 240 has a fifth interface 241 and a sixth interface 242, as shown. Figure 5As shown. One end of the fifth interface 241 is used to connect to an external device, and the other end is connected to the second distal balloon 220; one end of the sixth interface 242 is used to connect to an external device, and the other end is connected to the second proximal balloon 230. This type of second connector 240 is suitable for situations where the second catheter body 210 is equipped with a second distal balloon 220 and a second proximal balloon 230.

[0067] For example, the second conduit 210 has a fifth channel 212 and a sixth channel 213 on its wall surface, such as... Figure 6 As shown. The two ends of the fifth channel 212 are connected to the fifth interface 241 and the second distal balloon 220, respectively, and the two ends of the sixth channel 213 are connected to the sixth interface 242 and the second proximal balloon 230, respectively. Preferably, the second channel 211, the fifth channel 212, and the sixth channel 213 are independent of each other, so that the inflation of the second distal balloon 220 and the second proximal balloon 230 can be controlled independently.

[0068] For example, the second catheter body 210 has a second channel 211 in the middle, the second channel 211 extending axially along the second catheter body 210, and the second channel 211 can be used to allow a guidewire to pass through, such as... Figure 6 As shown. For example, the second channel 211 is also connected to the sixth interface 242 so that a guide wire can be inserted from the sixth interface 242.

[0069] Not limited to this, the second catheter body 210 may also only have a fifth channel 212 and a sixth channel 213, without having a second channel 211.

[0070] For example, when the second catheter body 210 is only equipped with the second distal balloon 220, the aforementioned second connector 240 can also be used to block the sixth interface 242, or the sixth interface 242 can be used for the guidewire to pass through, such as... Figure 3 As shown.

[0071] For example, the external device includes a suction device and an inflation device. The suction device is connected to the first channel 111 to aspirate the contents of the cavity; the inflation device is connected to each balloon to inflate the balloons. For example, each balloon can be inflated with gas or liquid.

[0072] In some embodiments, the surface of the second catheter body 210 is provided with a hydrophilic coating. The hydrophilic coating can increase its lubricity after being wetted by water, and can significantly reduce the friction between the second balloon catheter 200 and the first balloon catheter 100 when used together.

[0073] The second aspect of this embodiment provides a medical device.

[0074] The medical device of this embodiment includes a suction device and an intestinal obstruction catheter kit. The intestinal obstruction catheter kit is an intestinal obstruction catheter kit according to any of the technical solutions in the first aspect of this embodiment. The suction device is used to communicate with the first channel 111 to aspirate the contents of the cavity.

[0075] The medical device of this embodiment has an intestinal obstruction catheter kit according to any of the technical solutions in the first aspect of this embodiment, so that the medical device has the same technical effect as the aforementioned intestinal obstruction catheter kit, which will not be repeated here.

[0076] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0077] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0078] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An ileus catheter kit, characterized in that, The first balloon catheter (100) comprises a first catheter body (110) provided with a first distal balloon (120) and a first proximal balloon (130) spaced from each other on the outer surface of the first catheter body (110), the first distal balloon (120) being close to the distal end of the first catheter body (110), and the first proximal balloon (130) being proximal to the first distal balloon (120), the first distal balloon (120) and / or the first proximal balloon (130) being used to anchor the intestinal wall and can pull back the intestinal tract; The intestinal obstruction catheter kit further comprises a second balloon catheter (200), the second balloon catheter (200) comprising a second catheter body (210) provided with at least a second distal balloon (220) on the outer surface of the distal end of the second catheter body (210), the second distal balloon (220) being used to anchor the intestinal wall and can pull back the intestinal tract; The first catheter body (110) further has a first channel (111) passing through in the axial direction, the first channel (111) being used for the second balloon catheter (200) to pass through, and the second distal balloon (220) reaches the distal end of the first balloon catheter (100).

2. The intestinal obstruction catheter kit of claim 1, wherein, The second balloon catheter (200) further comprises a second proximal balloon (230) proximal to the second distal balloon (220), The second proximal balloon (230) is used to expand the obstruction site, and the elasticity of the second proximal balloon (230) is smaller than that of the second distal balloon (220), and / or the hardness of the second proximal balloon (230) is greater than that of the second distal balloon (220).

3. The intestinal obstruction catheter kit of claim 2, wherein, The second distal balloon (220) is a compliant balloon, and the second proximal balloon (230) is a non-compliant balloon; Alternatively, the second distal balloon (220) is a compliant balloon, and the second proximal balloon (230) is a semi-compliant balloon.

4. The intestinal obstruction catheter kit of claim 3, wherein, The second distal balloon (220) is a silica gel balloon, a rubber balloon, a latex balloon, a thermoplastic elastomer balloon or a polyurethane balloon; The second proximal balloon (230) is a polyether amide balloon, a nylon balloon, a polyamide balloon or a polyethylene terephthalate balloon.

5. The intestinal obstruction catheter kit of any one of claims 1 to 4, wherein, The first balloon catheter (100) further comprises a first connecting seat (140) located at the proximal end of the first catheter body (110), one end of the first connecting seat (140) being used to connect an external device, and the other end being in communication with the first channel (111), the first distal balloon (120) and / or the first proximal balloon (130); And / or, the first catheter body (110) is further provided with a through hole (112) penetrating the wall surface of the first catheter body (110) and in communication with the first channel (111), the through hole (112) being located between the first distal balloon (120) and the first proximal balloon (130).

6. The intestinal obstruction catheter kit of claim 5, wherein, The first connecting seat (140) comprises a first interface (141), a second interface (142) and a third interface (143), wherein, The first interface (141) is in communication with the first channel (111), The second interface (142) is in communication with the first distal balloon (120), The third interface (143) is in communication with the first proximal balloon (130).

7. The intestinal obstruction catheter kit of claim 6, wherein, The first connecting seat (140) further comprises a fourth interface (144) in communication with the first channel (111), and a one-way valve (145) is arranged at the fourth interface (144), The one-way valve (145) has a closed state and an open state, and when the one-way valve (145) is in the open state, the one-way valve (145) is configured to allow external gas to enter the first channel (111) through the one-way valve (145).

8. The intestinal obstruction catheter kit of claim 1, wherein, The second balloon catheter (200) further comprises a second connecting seat (240) located at the proximal end of the second catheter body (210), The second connecting seat (240) has a fifth interface (241), one end of which is used for connecting an external device, and the other end is in communication with the second distal balloon (220).

9. The intestinal obstruction catheter kit of any of claims 2-4, wherein, The second balloon catheter (200) further comprises a second connecting seat (240) located at the proximal end of the second catheter body (210), The second connecting seat (240) has a fifth interface (241) and a sixth interface (242), one end of the fifth interface (241) is used for connecting an external device, and the other end is in communication with the second distal balloon (220); one end of the sixth interface (242) is used for connecting an external device, and the other end is in communication with the second proximal balloon (230).

10. A medical device, characterized by The intestinal obstruction catheter kit according to any one of claims 1 to 9, and a suction device for communicating with the first channel (111) to suck the contents in the cavity.

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