Medical endoscope catheter

Abstract

The invention relates to a medical endoscope catheter which comprises a catheter body, a first end tube and a second end tube are arranged at the guide wire outlet end of the catheter body, the length of the first end tube is smaller than that of the second end tube, the first end tube and the second end tube are both parallel to the catheter body, and the first end tube and the second end tube are communicated with the catheter body. The adjusting assembly comprises a first traction wire, a second traction wire and an operation handle used for controlling the first traction wire to be wound and unwound and controlling the second traction wire to be wound and unwound. The first traction wire penetrates through the tube body and the first end tube, one end of the first traction wire is connected with the operating handle, and the other end is connected with the first end tube; the second traction wire penetrates through the pipe body and the second end pipe, one end of the second traction wire is connected with the operating handle, and the other end of the second traction wire is connected with the second end pipe. Based on the medical endoscope catheter, imaging observation and treatment operation of the bile duct or the pancreatic duct can be achieved at the same time, the position of the catheter does not need to be adjusted again, a guide wire does not need to be inserted again, the surgical operation efficiency is improved, and cross infection can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of endoscopes, and in particular relates to a medical endoscope catheter. Background Art

[0002] Endoscopes are mainly used for the examination of intestinal organs in the human body and are an indispensable and important medical device. At present, endoscopic retrograde cholangiopancreatography (ERCP)-guided treatment is the main endoscopic treatment for bile and pancreatic diseases. In the ERCP operation, selective bile duct or pancreatic duct cannulation is the key to the success or failure of ERCP and also the technical difficulty. If the cannulation is unsuccessful, subsequent diagnosis and treatment cannot be carried out. The failure rate of ERCP cannulation due to various reasons is high, and can reach 5% to 10% among experienced operators. In addition, repeated attempts to cannulate also greatly increase the occurrence of postoperative complications. How to improve the success rate of ERCP cannulation, especially difficult cannulation, is a hot topic in the medical community. The problem of ERCP cannulation has become the biggest "roadblock" for grassroots hospitals to carry out ERCP diagnosis and treatment.

[0003] Conventional bile and pancreatic duct cannulation uses a guidewire-assisted pull-type incision knife intubation method, that is, through the duodenoscope instrument channel, a pull-type incision knife with a hydrophilic super-slippery guidewire is shallowly inserted into the opening of the duodenal papilla. Under X-ray fluoroscopy, the guidewire is used to selectively explore the bile duct or pancreatic duct opening successfully, and then the incision knife is inserted into the bile duct or pancreatic duct along the guidewire. During intubation, the incision knife can only be roughly aligned with the direction of the bile duct or pancreatic duct (the angle between the entrance of the bile duct and the pancreatic duct is 30 degrees), and intubation cannot be performed under direct vision. If a difficult papilla is encountered (such as a lengthy papilla or a papilla beside a diverticulum), repeated attempts to intubate may damage the papilla, bile duct or pancreatic duct, leading to serious complications. Therefore, it is of great significance to design an endoscopic catheter that can ensure rapid and accurate intubation of the bile duct and pancreatic duct. Summary of the invention

[0004] The technical problem solved by the present invention is to provide a medical endoscope catheter to solve the technical problem that the bile duct and the pancreatic duct cannot be simultaneously displayed, imaged or operated in the prior art.

[0005] The specific solution provided by the present invention comprises the following steps:

[0006] The present invention provides a medical endoscope catheter, comprising: a tube body, a first end tube and a second end tube are arranged at the guide wire outlet end of the tube body, the length of the first end tube is smaller than that of the second end tube, the length of the first end tube differs from that of the second end tube by 6-10 mm, the first end tube and the second end tube are both arranged parallel to the tube body, and the first end tube and the second end tube are respectively connected to the tube body; an adjustment component for adjusting the bending angle of the first end tube and the bending angle of the second end tube, the adjustment component comprising a first traction wire, a second traction wire, and an operating handle for controlling the retraction and extension of the first traction wire and the retraction and extension of the second traction wire; the first traction wire is passed through the tube body, and one end of the first traction wire is connected to the operating handle, and the other end is connected to the first end tube; the second traction wire is passed through the tube body, and one end of the second traction wire is connected to the operating handle, and the other end is connected to the second end tube.

[0007] The technical solution of the present invention has the following beneficial effects:

[0008] The medical endoscope catheter based on the present invention has two ends (a first end tube and a second end tube), and the angles of the two ends can be adjusted according to needs so that they can be quickly and accurately aligned with the direction of the bile duct or the pancreatic duct, reducing the damage that may be caused by repeated attempts at intubation; and one instrument can be used to insert the bile duct and the pancreatic duct, and the intubation operation of the bile duct or the pancreatic duct can be achieved at the same time, reducing papillary incision, and reducing the occurrence of complications and inflammation; the length of the first end tube is smaller than that of the second end tube, and the length of the first end tube differs from the length of the second end tube by 6-10mm, thereby achieving the second end tube and the first end tube being aligned and inserted in sequence, ensuring the accuracy of insertion and reducing the difficulty of insertion.

[0009] On the basis of the above scheme, the present invention can also be improved as follows:

[0010] Furthermore, a first lumen for accommodating a first guide wire and a second lumen for accommodating a second guide wire are arranged in parallel in the tube body, the first lumen and the second lumen are arranged parallel to the axis of the tube body, the first lumen is connected to the first end tube, and the second lumen is connected to the second end tube; a first channel for accommodating the first traction wire is arranged on one side of the first lumen, one end of the first traction wire is connected to the operating handle, and the other end is connected to the first end tube after passing through the first channel; a second channel for accommodating the second traction wire is arranged on one side of the second lumen, one end of the second traction wire is connected to the operating handle, and the other end is connected to the second end tube after passing through the second channel.

[0011] Furthermore, two side pipes are arranged at the guidewire inlet end of the tube body, and the tube body and the two side pipes form a Y-shaped tube structure, wherein one of the side pipes is connected to the first lumen, and the other side pipe is connected to the second lumen.

[0012] Furthermore, the first end tube and the second end tube are soft tubes respectively.

[0013] Furthermore, a third channel for accommodating the first traction wire is provided in the tube wall of the first end tube; one end of the first traction wire is connected to the operating handle, and the other end passes through the third channel and is fixedly connected to an end of the first end tube away from the tube body.

[0014] Furthermore, a fourth channel for accommodating the second traction wire is provided in the tube wall of the second end tube; one end of the second traction wire is connected to the operating handle, and the other end passes through the fourth channel and is fixedly connected to an end of the second end tube away from the tube body.

[0015] Furthermore, the operating handle includes a first rotating handle for controlling the retraction and extension of the first traction wire and a second rotating handle for controlling the retraction and extension of the second traction wire; one end of the first traction wire is fixedly connected to the first rotating handle, and the other end is connected to the first end tube; one end of the second traction wire is fixedly connected to the second rotating handle, and the other end is connected to the second end tube.

[0016] Furthermore, the operating handle includes a support seat, the first rotating handle is a first rotating cylinder arranged along the axis of the tube body, the second rotating handle is a second rotating cylinder arranged along the axial direction of the tube body, the first rotating cylinder and the second rotating cylinder are arranged in sequence along the axis direction of the tube body, and the first rotating cylinder and the second rotating cylinder are respectively threadedly connected to the support seat; one end of the first traction wire is fixedly connected to the first rotating cylinder; one end of the second traction wire is fixedly connected to the second rotating cylinder.

[0017] Furthermore, the first rotating cylinder is arranged near the guide wire inlet end of the tube body, and the second rotating cylinder is arranged near the guide wire outlet end of the tube body. The outer wall of the first rotating cylinder is provided with a first external thread and a fifth channel for threaded connection with the support seat, and the outer wall of the second rotating cylinder is provided with a second external thread and a sixth channel for threaded connection with the support seat; one end of the first traction wire is fixed in the fifth channel; one end of the second traction wire is fixed in the sixth channel after passing through the cavity of the first rotating cylinder.

[0018] Furthermore, a first through hole and a second through hole are provided on the tube wall of the tube body, one end of the first traction wire passes through the first through hole in sequence and is fixed in the fifth channel, and one end of the second traction wire passes through the second through hole and the cavity of the first rotating cylinder in sequence and is fixed in the sixth channel.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of a medical endoscope catheter based on an embodiment of the present invention.

[0021] Figure 2 It is a cross-sectional view of a medical endoscope catheter according to an embodiment of the present invention.

[0022] Figure 3 It is a schematic structural diagram of a tube body, a first end tube and a second end tube in a medical endoscope catheter according to an embodiment of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of a medical endoscope catheter and a duodenoscope in a state of coordinated use according to an embodiment of the present invention.

[0024] Figure 5 It is a schematic structural diagram of the first end tube and the second section tube in the medical endoscope catheter according to an embodiment of the present invention in a use state.

[0025] Figure 6 It is a schematic diagram of the structure of the first end tube, the second section tube, the first guide wire and the second guide wire in the medical endoscope catheter according to an embodiment of the present invention when in use.

[0026] Attached Figure 1-6 The names of the components are as follows:

[0027] 1. Tube body; 11. First cavity; 12. Second cavity; 13. First channel; 14. Second channel;

[0028] 21. first traction wire; 22. second traction wire; 23. operating handle; 231. first rotating handle; 232. second rotating handle; 233. support seat; 234. first external thread; 235. fifth channel; 236. second external thread; 237. sixth channel;

[0029] 3. first end tube; 31. third channel;

[0030] 4. second end tube; 41. fourth channel;

[0031] 5. Side pipe;

[0032] 6. Duodenoscope; 61. Instrument channel;

[0033] 7. First guide wire;

[0034] 8. Second guide wire. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below. The embodiments described below are exemplary and intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0036] Combined with Figure 1-6 , the specific solutions provided by the present invention are as follows:

[0037] like Figure 1-3 As shown, the medical endoscope catheter based on the present invention comprises: a tube body 1, a first end tube 3 and a second end tube 4 are arranged at the guide wire outlet end of the tube body, the length of the first end tube 3 is smaller than the second end tube 4, the length of the first end tube 3 differs from the length of the second end tube 4 by 6-10 mm, the first end tube 3 and the second end tube 4 are both arranged parallel to the tube body 1, and the first end tube 3 and the second end tube 4 are respectively connected to the tube body 1; an adjustment component for adjusting the bending angle of the first end tube 3 and the bending angle of the second end tube 4, the adjustment component comprises a first traction wire 21, a second traction wire 22, and an operating handle 23 for controlling the retraction and extension of the first traction wire 21 and the retraction and extension of the second traction wire 22; the first traction wire 21 is arranged in the tube body 1, and one end of the first traction wire 21 is connected to the operating handle 23, and the other end is connected to the first end tube 3; the second traction wire 22 is arranged in the tube body 1 and the second end tube 4, and one end of the second traction wire 22 is connected to the operating handle 23, and the other end is connected to the second end tube 4. The medical endoscope catheter based on the present invention has two ends (a first end tube 3 and a second end tube 4), and the angles of the two ends can be adjusted according to needs so that they can be quickly and accurately aligned with the direction of the bile duct or the pancreatic duct, reducing the damage that may be caused by repeated attempts at intubation; and one instrument can be used to insert the bile duct and the pancreatic duct, and the intubation operation of the bile duct or the pancreatic duct can be achieved at the same time, reducing papillary incision, and reducing the occurrence of complications and inflammation; and the length of the first end tube 3 is smaller than that of the second end tube 4, and the length of the first end tube 3 differs from the length of the second end tube 4 by 6-10mm, thereby achieving the second end tube 4 and the first end tube 3 being aligned and inserted in sequence, ensuring the accuracy of insertion and reducing the difficulty of insertion.

[0038] like Figure 2As shown, based on the medical endoscope catheter of the embodiment of the present invention, a first lumen 11 for accommodating a first guide wire and a second lumen 12 for accommodating a second guide wire are arranged in parallel in the tube body 1, the first lumen 11 and the second lumen 12 are arranged parallel to the axis of the tube body 1, the first lumen 11 is connected to the first end tube 3, and the second lumen 12 is connected to the second end tube 4; a first channel 13 for accommodating the first traction wire 21 is arranged on one side of the first lumen 11, one end of the first traction wire 21 is connected to the operating handle 23, and the other end is connected to the first end tube 3 after passing through the first channel 13; a second channel 14 for accommodating the second traction wire 22 is arranged on one side of the second lumen 12, one end of the second traction wire 22 is connected to the operating handle 23, and the other end is connected to the second end tube 4 after passing through the second channel 14. When used specifically, the duodenoscope 6 is first placed at the designated position, and then the medical endoscope catheter based on the present invention is placed into the instrument channel 61 of the duodenoscope 6, as shown in FIG. Figure 4 Then push the medical endoscope catheter to push the two ends (the first end tube and the second end tube) into the papillary muscle, as shown in FIG. Figure 5 As shown; by operating the handle, the first end tube 3 and the second end tube are bent respectively, so that the first end tube is aligned with the pancreatic duct, and the second end tube 4 is aligned with the bile duct. At this time, the angle between the first end tube 3 and the second end tube 4 is 15 to 20°, as shown Figure 6 As shown; the first guide wire 7 can enter the first end tube 3 through the first lumen 11, and the second guide wire 8 can enter the second end tube 4 through the second lumen 12 to complete the cannulation of the pancreatic duct and the bile duct.

[0039] like Figure 2 As shown, based on the medical endoscope catheter of the embodiment of the present invention, two side pipes 5 are arranged at the guidewire inlet end of the tube body 1, and the tube body 1 and the two side pipes 5 form a Y-shaped tube structure, wherein one of the side pipes 5 is connected to the first lumen 11, and the other side pipe 5 is connected to the second lumen 12. The Y-shaped tube arrangement makes the guidewire intubation operation more convenient. The first guidewire 7 passes through one of the side pipes 5 and the first lumen 11 in the tube body 1 in turn, and then enters the first end tube 3; the second guidewire 8 passes through the other side pipe 5 of the Y-shaped tube in turn, and then enters the second end tube 4 in turn.

[0040] Based on the medical endoscope catheter of the embodiment of the present invention, the first end tube 3 and the second end tube 4 are soft tubes respectively.

[0041] Preferably, the soft tube is a Pebax tube, a Tpu tube or a rubber tube.

[0042] like Figure 2 and Figure 3As shown, based on the medical endoscope catheter of an embodiment of the present invention, a third channel 31 for accommodating the first traction wire 21 is provided in the tube wall of the first end tube 3; one end of the first traction wire 21 is connected to the operating handle, and the other end passes through the third channel 31 and is fixedly connected to the end of the first end tube 3 away from the tube body 1.

[0043] Based on the medical endoscope catheter of an embodiment of the present invention, a fourth channel 41 for accommodating the second traction wire 12 is provided in the tube wall of the second end tube 4; one end of the second traction wire 12 is connected to the operating handle, and the other end passes through the fourth channel 41 and is fixedly connected to the end of the second end tube 4 away from the tube body 1.

[0044] Based on the medical endoscope catheter of the embodiment of the present invention, the operating handle 23 includes a first rotating handle 231 for controlling the retraction and extension of the first traction wire 21 and a second rotating handle 232 for controlling the retraction and extension of the second traction wire 22; one end of the first traction wire 21 is fixedly connected to the first rotating handle 231, and the other end is connected to the first end tube 3; one end of the second traction wire 22 is fixedly connected to the second rotating handle 232, and the other end is connected to the second end tube. By tightening the first traction wire 21 through the first rotating handle 231, the first traction wire 21 pulls the first end tube 3 to bend in the pulling direction, and adjusts the bending degree of the first end tube to align it with the pancreatic duct; by tightening the second traction wire 22 through the second rotating handle 232, the second traction wire 22 pulls the second end tube 4 to bend in the pulling direction, and adjusts the bending degree of the second end tube 4 to align it with the bile duct.

[0045] like Figure 1 and Figure 2As shown, based on the medical endoscope catheter of an embodiment of the present invention, the operating handle 23 also includes a support seat 233, the first rotating handle 231 is a first rotating cylinder arranged along the axis of the tube body 1, and the second rotating handle 232 is a second rotating cylinder arranged along the axial direction of the tube body 1, the first rotating cylinder 231 and the second rotating cylinder 232 are arranged in sequence along the axis direction of the tube body, and the first rotating cylinder and the second rotating cylinder are respectively threadedly connected to the support seat 233; one end of the first traction wire 21 is fixedly connected to the first rotating cylinder; one end of the second traction wire is fixedly connected to the second rotating cylinder. By adjusting (pushing, pulling, rotating) the support seat 233 on the operating handle, the first end tube 3 and the second end tube 4 can enter the papillary muscle and the position can be fine-tuned; when the bending angle of the first end tube 3 needs to be adjusted, the first rotating cylinder is rotated, and the first traction wire 21 is tightened, thereby driving the first end tube 3 to bend, so that the first end tube 3 is aligned with the pancreatic duct. When the catheter needs to be removed, the first rotating cylinder is rotated in the opposite direction, so that the first end tube 3 can be in a straight state again, which is convenient for the subsequent removal of the catheter.

[0046] like Figure 2 As shown, based on the medical endoscope catheter of an embodiment of the present invention, the first rotating cylinder is arranged near the guide wire outlet end of the tube body 1, and the second rotating cylinder is arranged near the guide wire inlet end of the tube body 1, and the outer wall of the first rotating cylinder is provided with a first external thread 234 and a fifth channel 235 for threaded connection with the support seat 233, and the outer wall of the second rotating cylinder is provided with a second external thread 236 and a sixth channel 237 for threaded connection with the support seat; one end of the first traction wire 21 is fixed in the fifth channel 235; one end of the second traction wire 22 is fixed in the sixth channel 237 after passing through the cavity of the first rotating cylinder.

[0047] Based on the medical endoscope catheter of the embodiment of the present invention, a first through hole and a second through hole are provided on the tube wall of the tube body 1, one end of the first traction wire 21 passes through the first through hole in sequence and is fixed in the fifth channel 235, and one end of the second traction wire 22 passes through the second through hole and the cavity of the first rotating cylinder in sequence and is fixed in the sixth channel 237.

[0048] Preferably, one end of the first traction wire 21 is fixed in the fifth channel 235 by bonding, welding or crimping, and one end of the second traction wire 22 is fixed in the sixth channel 237 by bonding, welding or crimping.

[0049] Although the embodiments of the present invention have been described in detail above, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A medical endoscope catheter, characterized in that: include: A tube body, wherein a first end tube and a second end tube are arranged at the guide wire outlet end of the tube body, the length of the first end tube is smaller than the second end tube, the length of the first end tube differs from the length of the second end tube by 6-10 mm, the first end tube and the second end tube are arranged parallel to the tube body, and the first end tube and the second end tube are respectively connected to the tube body; An adjustment component for adjusting the bending angle of the first end tube and the bending angle of the second end tube, the adjustment component includes a first traction wire, a second traction wire, and an operating handle for controlling the retraction and extension of the first traction wire and the retraction and extension of the second traction wire; the first traction wire is passed through the tube body, and one end of the first traction wire is connected to the operating handle, and the other end is connected to the first end tube; the second traction wire is passed through the tube body, and one end of the second traction wire is connected to the operating handle, and the other end is connected to the second end tube.

2. The medical endoscope catheter according to claim 1, characterized in that: A first lumen for accommodating a first guide wire and a second lumen for accommodating a second guide wire are arranged in parallel in the tube body, the first lumen and the second lumen are arranged parallel to the axis of the tube body, the first lumen is connected to the first end tube, and the second lumen is connected to the second end tube; a first channel for accommodating the first traction wire is arranged on one side of the first lumen, one end of the first traction wire is connected to the operating handle, and the other end is connected to the first end tube after passing through the first channel; a second channel for accommodating the second traction wire is arranged on one side of the second lumen, one end of the second traction wire is connected to the operating handle, and the other end is connected to the second end tube after passing through the second channel.

3. The medical endoscope catheter according to claim 2, characterized in that: The guidewire inlet end of the tube body is provided with two side pipes, and the tube body and the two side pipes form a Y-shaped tube structure, wherein one of the side pipes is communicated with the first lumen, and the other side pipe is communicated with the second lumen.

4. The medical endoscope catheter according to claim 1, characterized in that: The first end tube and the second end tube are soft tubes respectively.

5. The medical endoscope catheter according to claim 1, characterized in that: A third channel for accommodating the first traction wire is provided in the tube wall of the first end tube; one end of the first traction wire is connected to the operating handle, and the other end passes through the third channel and is fixedly connected to an end of the first end tube away from the tube body.

6. The medical endoscope catheter according to claim 1, characterized in that: A fourth channel for accommodating the second traction wire is provided in the tube wall of the second end tube; one end of the second traction wire is connected to the operating handle, and the other end passes through the fourth channel and is fixedly connected to an end of the second end tube away from the tube body.

7. The medical endoscope catheter according to any one of claims 1 to 6, characterized in that: The operating handle includes a first rotating handle for controlling the retraction and extension of the first traction wire and a second rotating handle for controlling the retraction and extension of the second traction wire; one end of the first traction wire is fixedly connected to the first rotating handle, and the other end is connected to the first end tube; one end of the second traction wire is fixedly connected to the second rotating handle, and the other end is connected to the second end tube.

8. The medical endoscope catheter according to claim 7, characterized in that: The operating handle also includes a support seat, the first rotating handle is a first rotating cylinder arranged along the axis of the tube body, the second rotating handle is a second rotating cylinder arranged along the axial direction of the tube body, the first rotating cylinder and the second rotating cylinder are arranged in sequence along the axis direction of the tube body, and the first rotating cylinder and the second rotating cylinder are respectively threadedly connected to the support seat; one end of the first traction wire is fixedly connected to the first rotating cylinder; one end of the second traction wire is fixedly connected to the second rotating cylinder.

9. The medical endoscope catheter according to claim 8, characterized in that: The first rotating cylinder is arranged near the guide wire outlet end of the tube body, and the second rotating cylinder is arranged near the guide wire inlet end of the tube body. The outer wall of the first rotating cylinder is provided with a first external thread and a fifth channel for threaded connection with the support seat, and the outer wall of the second rotating cylinder is provided with a second external thread and a sixth channel for threaded connection with the support seat; one end of the first traction wire is fixed in the fifth channel; one end of the second traction wire is fixed in the sixth channel after passing through the cavity of the first rotating cylinder.

10. The medical endoscope catheter according to claim 9, characterized in that: A first through hole and a second through hole are provided on the tube wall of the tube body, and one end of the first traction wire passes through the first through hole in sequence and is fixed in the fifth channel; one end of the second traction wire passes through the second through hole and the cavity of the first rotating cylinder in sequence and is fixed in the sixth channel.

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