Biliary tract pressure measuring drainage tube
By designing a biliary pressure measurement drainage tube and utilizing a combination of short and long tubes, simultaneous measurement of bile duct and intra-abdominal pressure is achieved, solving the problem of the inability to accurately measure biliary pressure in existing technologies and providing accurate pressure data to support surgical evaluation and prevent bile fistula.
Patent Information
- Application Number
- CN202510949896.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-10
- Publication Date
- 2025-09-26
AI Technical Summary
Existing biliary drainage tubes have a single function and cannot accurately measure biliary pressure during and after surgery.
A biliary pressure measurement and drainage tube was designed, which includes a short tube, a long tube, a partition, a first pressure sensor, and a second pressure sensor. The bile drainage hole and ascites drainage hole of the short tube are used to measure the pressure in the bile duct and abdominal cavity, respectively. The data is processed by combining a circuit board and a processor to obtain accurate biliary pressure data.
It achieves the simultaneous measurement of bile duct and intra-abdominal pressure during and after surgery, eliminates the influence of abdominal pressure, provides accurate bile duct pressure data, and supports postoperative evaluation and prevention of bile fistula.
Smart Images
Figure CN120695334A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of medical devices, and in particular to a bile duct pressure measurement and drainage tube. Background Art
[0002] A biliary drainage tube refers to a disposable soft catheter used clinically to drain bile after common bile duct incision and exploration. It is generally composed of a longer drainage hose and a short hose with a T-shaped connection at the end of the drainage hose, which is inserted into the incised extrahepatic bile duct. During medical use, an incision is made in the bile duct, and the short tube is passed through the incision and placed in the bile duct. The incision is then sutured for bile drainage.
[0003] Currently, the most commonly used biliary drainage tube is a T-type drainage tube. The short tube of the T-type drainage tube supports the common bile duct and ensures bile flow, while the long tube is used to drain bile out of the body. However, the long tube of the T-type drainage tube currently used is a single channel with a single function, which only serves to drain bile and cannot accurately measure bile duct pressure during and after surgery. Summary of the Invention
[0004] In order to solve the above technical problem or at least partially solve the above technical problem, the present invention provides a biliary pressure measurement and drainage tube.
[0005] The present application discloses a biliary pressure measurement and drainage tube, comprising: a short tube, wherein a bile drainage hole is provided on a peripheral wall of the short tube; a long tube, wherein an extension direction of the long tube is perpendicular to an extension direction of the short tube, and in the extension direction of the long tube, the long tube comprises a first port and a second port opposite to each other, the first port being connected to the peripheral wall of the short tube; a partition, wherein the partition is located in the long tube, one end of the partition extends to the first port and is connected to the peripheral wall of the short tube, and the other end extends to the second port, the partition divides the first port into a first sub-port and a second sub-port, the first sub-port being disposed over the bile drainage hole; wherein the partition divides the long tube into a first semicircular tube and a second semicircular tube, the second semicircular tube being provided with an ascites drainage hole, the partition comprising a first surface facing the first semicircular tube and a second surface facing the second semicircular tube; a first pressure sensor, wherein the first pressure sensor is disposed at one end of the first surface close to the first sub-port; and a second pressure sensor, wherein the second pressure sensor is disposed on the second surface and is disposed opposite to the ascites drainage hole.
[0006] According to the bile duct pressure measuring drainage tube provided in the embodiment of the present application, when the bile duct pressure measuring drainage tube is inserted into the patient's common bile duct, the short tube is located in the common bile duct, and the bile in the common bile duct flows into the first sub-port through the bile drainage hole of the short tube. The first pressure sensor measures the internal pressure of the bile duct, and the ascites drainage hole is located in the abdominal cavity. The ascites in the abdominal cavity flows from the ascites drainage hole to the second pressure sensor, and the second pressure sensor measures the internal pressure of the abdominal cavity. Therefore, whether during or after surgery, medical personnel can obtain intra-bile duct pressure data and intra-abdominal pressure data at the same time, and thus can obtain accurate bile duct pressure data without the influence of abdominal pressure.
[0007] In a possible implementation of the present application, there are multiple ascites drainage holes, and the multiple ascites drainage holes are arranged at intervals in the extension direction of the long tube.
[0008] In a possible implementation of the present application, there are multiple ascites drainage holes; the second semicircular tube includes an opening area opposite to the second pressure receptor, and the multiple ascites drainage holes are evenly spaced in the opening area.
[0009] In a possible implementation of the present application, the diameter of the ascites drainage hole is greater than or equal to 2 mm and less than or equal to 4 mm.
[0010] In a possible implementation of the present application, the orthographic projection of the first sub-port on the peripheral wall of the short tube coincides with the bile drainage hole.
[0011] In a possible implementation of the present application, the biliary pressure measurement and drainage tube also includes: a first circuit board, the first circuit board is arranged on the first surface, and the first pressure sensor is electrically connected to the first circuit board; a second circuit board, the second circuit board is arranged on the second surface, and the second pressure sensor is electrically connected to the second circuit board; a processor, the processor is located outside the long tube, and the processor is electrically connected to the first circuit board and the second circuit board, respectively.
[0012] In a possible implementation of the present application, the short tube, the long tube, and the partition are bonded together to form an integrated structure.
[0013] In a possible implementation of the present application, the short tube and the long tube are both made of soft rubber material.
[0014] In a possible implementation of the present application, the long tube is made of a tough, pressure-resistant material. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.
[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0017] Figure 1 Schematic diagram of a bile duct pressure measurement and drainage tube according to an embodiment of the present invention;
[0018] Figure 2 for Figure 1 An enlarged view of point A is shown in FIG.
[0019] Reference numerals:
[0020] 100. Biliary manometry drainage tube;
[0021] 110, short tube; 111, bile drainage hole;
[0022] 120, long tube; 1201, first semicircular tube; 1202, second semicircular tube; 1203, ascites drainage hole; 1211, first sub-port; 1212, second sub-port; 122, second port;
[0023] 130, partition; 131, first surface; 132, second surface;
[0024] 140. First pressure receptor;
[0025] 150, second pressure receptor;
[0026] 160. A first circuit board;
[0027] 170. Second circuit board;
[0028] 180. Processor. DETAILED DESCRIPTION
[0029] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.
[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all the embodiments.
[0031] A biliary drainage tube refers to a disposable soft catheter used clinically to drain bile after common bile duct incision and exploration. It is generally composed of a longer drainage hose and a short hose with a T-shaped connection at the end of the drainage hose, which is inserted into the incised extrahepatic bile duct. During medical use, an incision is made in the bile duct, and the short tube is passed through the incision and placed in the bile duct. The incision is then sutured for bile drainage.
[0032] Currently, the most commonly used biliary drainage tube is a T-type drainage tube. The short tube of the T-type drainage tube supports the common bile duct and ensures bile flow, while the long tube is used to drain bile out of the body. However, the long tube of the T-type drainage tube currently used is a single channel with a single function, which only serves to drain bile and cannot accurately measure bile duct pressure during and after surgery.
[0033] To solve the above technical problems, please refer to Figure 1 and Figure 2 , Figure 1 Schematic diagram of a bile duct pressure measurement and drainage tube according to an embodiment of the present invention; Figure 2 for Figure 1 The present application provides a biliary pressure measurement and drainage tube 100 , which may include a short tube 110 , a long tube 120 , a diaphragm 130 , a first pressure sensor 140 , and a second pressure sensor 150 .
[0034] The short tube 110 is a tubular structure with both ends open. A bile drainage hole 111 is provided on the peripheral wall of the short tube 110 . The bile drainage hole 111 passes through the peripheral wall of the short tube 110 , that is, the bile drainage hole 111 is connected to the internal space of the short tube 110 .
[0035] The extension direction of the long tube 120 is perpendicular to the extension direction of the short tube 110, that is, the extension direction of the short tube 110 is the left-right direction (for example Figure 1 For example, the extension direction of the long tube 120 is the up-down direction (for example Figure 1 In the extending direction of the long tube 120, the long tube 120 includes a first port and a second port 122 relative to each other. The first port is connected to the peripheral wall of the short tube 110. Specifically, the first port can be bonded to the peripheral wall of the short tube 110.
[0036] The partition 130 is located in the long tube 120, one end of the partition 130 extends to the first port and is connected to the peripheral wall of the short tube 110, and the other end of the partition 130 extends to the second port 122. Specifically, one end of the partition 130 can be bonded to the peripheral wall of the short tube 110, separating the first port into a first sub-port 1211 and a second sub-port 1212. The first sub-port 1211 is located at the bile drainage hole 111, that is, the bile drained from the bile drainage hole 111 of the short tube 110 can only flow to the first sub-port 1211.
[0037] The partition 130 is connected to the inner wall of the long tube 120 at both side edges in the width direction. Specifically, the partition 130 and the inner wall of the long tube 120 can be bonded. The partition 130 separates the long tube 120 into a first semicircular tube 1201 and a second semicircular tube 1202. The partition 130 includes a first surface 131 facing the first semicircular tube 1201 and a second surface 132 facing the second semicircular tube 1202.
[0038] The second semicircular tube 1202 is provided with an ascites drainage hole 1203 , and the ascites drainage hole 1203 runs through the second semicircular tube 1202 .
[0039] The first pressure sensor 140 is disposed at one end of the first surface 131 close to the first sub-port 1211 , so that the bile drained from the bile drainage hole 111 can reach the first pressure sensor 140 immediately, thereby detecting the pressure in the bile duct.
[0040] The second pressure sensor 150 is disposed on the second surface and is arranged opposite to the ascites drainage hole 1203. In this way, the ascites drained from the ascites drainage hole 1203 can reach the second pressure sensor 150 as soon as possible, thereby detecting the intra-abdominal pressure.
[0041] The first pressure sensor 140 and the second pressure sensor 150 may be piezoresistive pressure sensors.
[0042] It should be noted that when the biliary pressure measurement and drainage tube 100 is inserted into the patient's common bile duct, the short tube 110 is located in the common bile duct, and the bile in the common bile duct flows into the first sub-port 1211 from the bile drainage hole 111 of the short tube 110. The first pressure sensor 140 measures the internal pressure of the bile duct, and the ascites drainage hole 1203 is located in the abdominal cavity. The ascites in the abdominal cavity flows from the ascites drainage hole 1203 to the second pressure sensor 150, and the second pressure sensor 150 measures the internal pressure of the abdominal cavity. Therefore, whether during or after surgery, medical personnel can obtain intra-bile duct pressure data and intra-abdominal pressure data at the same time, and thus can obtain accurate biliary pressure data without the influence of abdominal pressure.
[0043] Understandably, during common bile duct exploration, bile duct pressure can be directly and conveniently measured under anesthesia. The measured values can be used to assess the surgical approach to the common bile duct and determine whether primary suturing or T-tube drainage is appropriate. This product can accurately measure bile duct pressure while the patient is awake after surgery, eliminating the influence of abdominal pressure. Based on changes in bile duct pressure, the T-tube used for bile drainage can be clamped early. This product can also perform sinusography through the side holes of the long tube to assess the formation of periductal sinuses. Once the sinuses are fully formed, the T-tube can be removed to reduce and prevent the occurrence of bile fistulas.
[0044] In a specific implementation process, the inner diameter of the first semicircular tube 1201 is larger than that of the second semicircular tube 1202 .
[0045] In some embodiments of the present application, there are multiple ascites drainage holes 1203 , and the multiple ascites drainage holes 1203 are arranged at intervals in the extension direction of the long tube 120 .
[0046] Specifically, 3, 4, 5 or 6 ascites drainage holes 1203 may be provided in the extension direction of the long tube 120 to ensure that the ascites in the abdominal cavity can flow to the second pressure sensor 150 to obtain accurate abdominal cavity pressure data.
[0047] In some other embodiments of the present application, there are multiple ascites drainage holes 1203, the second semicircular tube 1202 includes an opening area opposite to the second pressure receptor 150, and the multiple ascites drainage holes 1203 are evenly spaced in the opening area.
[0048] That is to say, the ascites drainage holes 1203 can be arranged in multiple rows in the circumferential direction of the second semicircular tube 1202 , and multiple holes can be arranged in the extending direction of the second semicircular tube 1202 .
[0049] For example, in a specific implementation, if the size of the second semicircular tube 1202 allows, the ascites drainage holes 1203 can be arranged in two rows along the circumference of the second semicircular tube 1202, with six ascites drainage holes 1203 arranged along the extension direction of the second semicircular tube 1202, that is, twelve ascites drainage holes 1203 are evenly arranged in the opening area. This can better ensure that ascites in the abdominal cavity can flow to the second pressure receptor 150, thereby obtaining accurate abdominal pressure data.
[0050] Furthermore, the diameter of the ascites drainage hole 1203 is greater than or equal to 2 mm and less than or equal to 4 mm.
[0051] In a specific implementation process, the diameter of the ascites drainage hole 1203 can be set to 2 mm, 2.5 mm, 3 mm, 3.5 mm or 4 mm.
[0052] In this way, on the one hand, the diameter of the ascites drainage hole 1203 can be ensured to be large enough so that ascites can flow to the second pressure sensor 150 through the ascites drainage hole 1203. On the other hand, the diameter of the ascites drainage hole 1203 can be prevented from being too large, which may cause the tissue in the abdominal cavity to flow out.
[0053] In some embodiments of the present application, the orthographic projection of the first sub-opening 1211 on the peripheral wall of the short tube 110 coincides with the bile drainage hole 111. That is, the first sub-opening 1211 and the bile drainage hole 111 have the same shape and size. This can reduce the occurrence of subtle pressure changes caused by the different diameters of the first sub-opening 1211 and the bile drainage hole 111.
[0054] It should be noted that the biliary pressure measurement and drainage tube 100 may further include a first circuit board 160, a second circuit board 170, and a processor 180. The first circuit board 160 is disposed on the first surface 131, and the first pressure sensor 140 is electrically connected to the first circuit board 160; the second circuit board 170 is disposed on the second surface 132, and the second pressure sensor 150 is electrically connected to the second circuit board 170; the processor 180 is located outside the long tube 120 and is electrically connected to the first circuit board 160 and the second circuit board 170 respectively.
[0055] In this way, by setting the processor 180, the pressure data obtained by the first pressure sensor 140 and the second pressure sensor 150 can be directly subtracted to obtain accurate bile duct pressure data without the influence of abdominal pressure.
[0056] The bile duct detection drainage tube may further include a display device and a storage device, both of which are electrically connected to the processor 180. By providing the display device, medical personnel can observe accurate bile duct pressure data during and after surgery, eliminating the influence of abdominal pressure. By providing the storage device, accurate bile duct pressure data during and after surgery, eliminating the influence of abdominal pressure, can be stored for future access.
[0057] In some embodiments of the present application, the short tube 110 , the long tube 120 , and the partition 130 are bonded together to form an integrated structure.
[0058] In some embodiments of the present application, both the short tube 110 and the long tube 120 are made of soft rubber. This facilitates trimming and shaping, makes insertion into the bile duct more convenient, and facilitates its movement within the abdominal cavity and out of the abdominal wall, while also reducing the patient's sense of rejection. It should be noted that the short tube 110 and the long tube 120 can be integrally formed, facilitating processing and production, reducing costs, and enhancing the integrity of the entire structure.
[0059] In some embodiments of the present application, the long tube 120 is made of a tough, pressure-resistant material, which can prevent the pipeline from being easily deformed by pressure, reduce the impact of angiography, guide wire placement, and deformation on the measured pressure results. At the same time, the long tube 120 can also be coated with an inner coating on the inner wall of the rubber tube to make it more tough and less prone to compression deformation.
[0060] In some embodiments of the present application, a notch is provided in the middle of the side of the short tube 110 facing away from the long tube 120. The notch allows the two ends of the short tube 110 to close in a Y-shape when the biliary drainage tube is removed, making it easier to remove the biliary drainage tube from the body and reducing the patient's discomfort.
[0061] Furthermore, medical staff can tailor the length of the short tube 110 and the position and size of the notch according to the requirements of the specific operation and the operating habits of the medical staff.
[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.
[0063] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments described herein, but is to be construed in the widest possible manner consistent with the principles and novel features disclosed herein.
Claims
1. A bile duct pressure measurement and drainage tube, characterized in that: include: A short tube, wherein a bile drainage hole is provided on a peripheral wall of the short tube; a long tube, wherein the extension direction of the long tube is perpendicular to the extension direction of the short tube, and in the extension direction of the long tube, the long tube comprises a first port and a second port opposite to each other, and the first port is connected to the peripheral wall of the short tube; a partition, the partition being located in the long tube, one end of the partition extending to the first port and connected to the peripheral wall of the short tube, and the other end extending to the second port, the partition dividing the first port into a first sub-port and a second sub-port, the first sub-port being located over the bile drainage hole; The partition separates the long tube into a first semicircular tube and a second semicircular tube, the second semicircular tube is provided with an ascites drainage hole, and the partition includes a first surface facing the first semicircular tube and a second surface facing the second semicircular tube; a first pressure sensor, the first pressure sensor being disposed on one end of the first surface close to the first sub-port; A second pressure sensor is provided on the second surface and is arranged opposite to the ascites drainage hole.
2. The biliary pressure measurement and drainage tube according to claim 1, characterized in that: There are multiple ascites drainage holes, and the multiple ascites drainage holes are arranged at intervals in the extending direction of the long tube.
3. The biliary pressure measurement and drainage tube according to claim 1, characterized in that: There are multiple ascites drainage holes; The second semicircular tube includes an opening area opposite to the second pressure receptor, and the plurality of ascites drainage holes are evenly spaced in the opening area.
4. The biliary pressure measurement and drainage tube according to claim 1, characterized in that: The diameter of the ascites drainage hole is greater than or equal to 2 mm and less than or equal to 4 mm.
5. The biliary pressure measurement and drainage tube according to claim 1, characterized in that: The orthographic projection of the first sub-port on the peripheral wall of the short tube coincides with the bile drainage hole.
6. The biliary pressure measurement and drainage tube according to claim 1, characterized in that: Also includes: a first circuit board, the first circuit board being disposed on the first surface, the first pressure sensor being electrically connected to the first circuit board; a second circuit board, the second circuit board being disposed on the second surface, the second pressure sensor being electrically connected to the second circuit board; A processor is located outside the long tube and is electrically connected to the first circuit board and the second circuit board respectively.
7. The biliary pressure measurement and drainage tube according to claim 1, characterized in that: The short tube, the long tube and the partition are bonded together to form an integrated structure.
8. The biliary pressure measurement and drainage tube according to claim 1, characterized in that: The short tube and the long tube are both made of soft rubber material.
9. The biliary pressure measurement and drainage tube according to claim 1, characterized in that: The long tube is made of a tough, pressure-resistant material.