Gall bladder and bile duct calculus removing catheter with supporting function

Abstract

The invention discloses a gallbladder and bile duct calculus removing catheter with a supporting function, which comprises a calculus removing catheter main body, the calculus removing catheter main body comprises a catheter body, a supporting mechanism and a handle, the supporting mechanism is movably arranged at one end of the catheter body, the handle is arranged at the other end of the catheter body, the handle is provided with a pushing mechanism, the pushing mechanism is connected with the supporting mechanism, and the supporting mechanism is connected with the supporting mechanism. The pushing mechanism is used for pulling the supporting mechanism in a reciprocating mode. The pushing mechanism is connected with the supporting mechanism, an operator can conveniently use the pushing mechanism to push the supporting mechanism in a reciprocating mode, the pushing mechanism on the handle adjusts the shape of the supporting mechanism, the supporting mechanism is attached to the inner wall of the gallbladder to support the gallbladder, gallbladder mucosa and surrounding tissue are prevented from being sucked in the calculus suction process, and the calculus suction efficiency is improved. Therefore, damage and bleeding of gallbladder mucosa and surrounding tissues are avoided; and the tube body can be used for sucking stones in the gallbladder and flushing the gallbladder, so that the operation time is shortened, and the operation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically to a gallbladder and bile duct stone removal catheter with a supporting function. Background Art

[0002] Gallstones are a common digestive disease. With the continuous development and updating of treatment technology, gallbladder preservation and lithotomy are increasingly valued by clinicians and doctors. At present, in the process of gallbladder preservation and lithotomy, the gallbladder and bile duct stones need to be crushed, and the resulting fragments and particles need to be removed by suction. Relevant instruments currently on the market, such as the U.S. patent with registration number US20230146163A1, disclose a suction and flushing combined with kidney stone suction catheter. The suction tube mouth in this technical solution does not have any supporting structure. During the process of negative pressure suction, it will easily attract the gallbladder mucosa and surrounding tissues while attracting stones, thereby causing damage and bleeding to the gallbladder mucosa and surrounding tissues. If a multi-channel channel plus a basket structure is selected as the support structure, due to the eccentricity of the basket structure, it is easy to deviate to one side during the process of supporting force, and it does not play a supporting role.

[0003] Therefore, it is necessary to propose a gallbladder and bile duct stone removal catheter with a supporting function to at least partially solve the problems existing in the prior art. Summary of the invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0005] In order to at least partially solve the above-mentioned problems, one aspect of the present invention provides a gallbladder and bile duct stone removal catheter with a supporting function, comprising: a stone removal catheter body, the stone removal catheter body comprising a tube body, a supporting mechanism, and a handle, the supporting mechanism being movably configured at one end of the tube body, the handle being configured at the other end of the tube body, the handle having a pushing mechanism, a suction control component, a flushing control component, and a shell, the pushing mechanism being connected to the supporting mechanism, and the pushing mechanism being used to push the supporting mechanism back and forth.

[0006] The support mechanism includes a plurality of support wires, which are inserted into a tube body, one ends of the plurality of support wires are connected to each other, the other ends of the plurality of support wires are connected to a pushing mechanism, and the plurality of support wires are distributed in an ellipsoidal, diamond or spiral shape around the circumference of a central axis, and the support wires are a single-segment structure or a multi-segment structure.

[0007] According to the gallbladder and bile duct stone removal catheter with a supporting function according to an embodiment of the present invention, the supporting mechanism includes a plurality of supporting wires and a supporting member, the supporting wires are inserted into the tube body, one end of the plurality of supporting wires is connected to the supporting member, and the other ends of the plurality of supporting wires are connected to the pushing mechanism;

[0008] Wherein, the support member is sheet-shaped, or the support member is ring-shaped and has telescopic elasticity, and one end of a plurality of the support wires is connected to the support member.

[0009] According to the gallbladder and bile duct stone removal catheter with a supporting function in an embodiment of the present invention, a suction channel and a plurality of flushing channels are provided in the tube body, and a plurality of wire threading channels are arranged on the tube wall of the tube body, the plurality of wire threading channels pass through the tube body, the suction channel and the plurality of flushing channels pass through the tube body, and the supporting wire passes through the plurality of wire threading channels and is connected to a pushing mechanism.

[0010] According to the gallbladder and bile duct stone removal catheter with a supporting function according to an embodiment of the present invention, when the supporting member is annular, the tube body is provided with a suction channel and a plurality of flushing channels, and the tube wall of the tube body is provided with a plurality of semi-permeable channels and a plurality of through-wire channels, wherein the plurality of semi-permeable channels and the plurality of through-wire channels are evenly distributed around the suction channel, wherein a plurality of the through-wire channels penetrate the tube wall of the tube body, and a plurality of the supporting wires are respectively arranged in the semi-permeable channels and the plurality of through-wire channels.

[0011] According to the gallbladder and bile duct stone removal catheter with a supporting function according to an embodiment of the present invention, the pushing mechanism includes a pushing key, a spring, a first spring, and a slide cylinder. The spring is arranged at the bottom of the pushing key, one end of the first spring is connected to the spring, and the other end of the first spring is connected to the slide cylinder. The spring includes two tooth blocks, and a plurality of tooth block grooves are arranged on the inner side of the upper surface of the shell. The tooth blocks and the tooth block grooves cooperate to provide a locking effect for the supporting mechanism.

[0012] According to the gallbladder and bile duct stone removal catheter with a supporting function in an embodiment of the present invention, the suction control component includes an operation button, a second spring, a driver, and a ratchet. The operation button is fixed on the driver, one end of the second spring is fixed to the step on the driver, and the other end is connected to the inner surface of the outer shell, and the ratchet is provided with a first negative pressure regulating hole.

[0013] According to the gallbladder and bile duct stone removal catheter with a supporting function in an embodiment of the present invention, the flushing control component includes a cross tube body and a rotary valve. The rotary valve is provided with a water hole. The rotary valve is connected to the cross tube body, and the flushing function is controlled by the rotary valve.

[0014] Another aspect of the present invention provides a gallbladder and bile duct stone removal catheter with a supporting function, the stone removal catheter body, the stone removal catheter body includes a tube body, a supporting mechanism, a handle, and a sheath, the sheath is configured on the handle, the supporting mechanism includes supporting wires and supporting members, one end of a plurality of the supporting wires is connected to the supporting member, the other end of the supporting wires is connected to one end of the tube body, the tube body is movably configured in the sheath, and the other end of the tube body is connected to a pushing mechanism on the handle.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] The present invention provides a gallbladder and bile duct stone removal catheter with a supporting function, the gallbladder and bile duct stone removal catheter with a supporting function comprises a stone removal catheter body, the stone removal catheter body comprises a tube body, a supporting mechanism, and a handle, wherein the supporting mechanism is movably mounted at one end of the tube body, and the handle is mounted at the other end of the tube body, further, the handle is provided with a pushing mechanism, which is connected to the supporting mechanism through the pushing mechanism, thereby facilitating an operator to use the pushing mechanism to push the supporting mechanism back and forth, so that medical staff can adjust the shape of the supporting mechanism through the pushing mechanism on the handle according to the actual gallbladder situation, fit the supporting mechanism to the inner wall of the gallbladder to support the gallbladder, prevent the gallbladder mucosa and surrounding tissues from being sucked during the process of sucking stones, thereby avoiding damage and bleeding to the gallbladder mucosa and surrounding tissues; and the tube body can achieve the attraction of stones in the gallbladder and the flushing of the gallbladder, thereby shortening the operation time and improving the operation efficiency.

[0017] The gallbladder and bile duct stone removal catheter with supporting function described in the present invention, other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the suction channel of the present invention.

[0021] Figure 3 The structure of one end of the tube body when the supporting mechanism of the present invention is partially released is shown in FIG. Figure 1 .

[0022] Figure 4 The structure of one end of the tube body when the supporting mechanism of the present invention is partially released is shown in FIG. Figure 2.

[0023] Figure 5 The structure of one end of the tube body when the supporting mechanism of the present invention is partially released is shown in FIG. Figure 3 .

[0024] Figure 6 The structure of one end of the tube body when the supporting mechanism of the present invention is partially released is shown in FIG. Figure 4 .

[0025] Figure 7 Detailed Description of the Invention Various cross-sectional views of the tube body of the present invention.

[0026] Figure 8 It is a schematic diagram of the structure of the tube body when the supporting mechanism of the present invention is deformed due to extrusion.

[0027] Fig. 9 This is a schematic diagram of the partial structure of the tube body when the support mechanism of the present invention is fully released. Figure 1 .

[0028] Fig.10 The schematic diagram of the partial structure of the tube body when the supporting mechanism of the present invention is partially released Figure 1 .

[0029] Fig.11 The schematic diagram of the partial structure of the tube body when the support mechanism of the present invention is retracted Figure 1 .

[0030] Fig.12 The schematic diagram of the partial structure of the tube body when the supporting mechanism of the present invention is partially released Figure 2 .

[0031] Fig.13 The schematic diagram of the partial structure of the tube body when the support mechanism of the present invention is retracted Figure 2 .

[0032] Fig.14 Various top views of the tube body of the present invention Figure 1 .

[0033] Fig.15 Various top views of the tube body of the present invention Figure 2 .

[0034] Fig.16 It is a schematic diagram of the structure of one end of the tube body when the supporting mechanism of the present invention is fully released.

[0035] Fig.17 The structure of one end of the tube body during the retraction process of the support mechanism of the present invention is shown in FIG. Figure 1 .

[0036] Fig.18 It is a schematic diagram of the use of the support mechanism of the present invention when it is in a retracted state.

[0037] Fig.19 The partial structure of the handle of the present invention is shown in FIG. Figure 1

[0038] Fig. 20 The partial structure of the handle of the present invention is shown in FIG. Figure 2 .

[0039] Fig.21 The partial structure of the handle of the present invention is shown in FIG. Figure 3 .

[0040] Fig. 22 It is a structural schematic diagram of the flushing control component of the present invention.

[0041] Fig.23 The structure of the attraction control component of the present invention is shown in FIG. Figure 1 .

[0042] Fig.24 The structure of the attraction control component of the present invention is shown in FIG. Figure 2 .

[0043] Fig.25 The structure of one end of the tube body when the support mechanism of the present invention is retracted is shown in FIG. Figure 2 .

[0044] Fig.26 It is a schematic diagram of the use of the supporting mechanism of the present invention when it is fully released.

[0045] Fig. 27 It is a schematic diagram of the use of the supporting mechanism of the present invention when it is partially released.

[0046] Fig.28 The partial structure of the handle of the present invention is shown in FIG. Figure 4 .

[0047] Fig.29 The structure of the attraction control component of the present invention is shown in FIG. Figure 3 .

[0048] Illustration Description: Fig.21 , 23 The middle arrow indicates the installation and plugging direction. Fig.24 The middle arrow indicates the direction of negative pressure adjustment. DETAILED DESCRIPTION

[0049] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0050] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0051] like Figure 1-Figure 5As shown, the present invention provides a gallbladder and bile duct stone removal catheter with a supporting function, including: a stone removal catheter body 100, the stone removal catheter body 100 includes a tube body 1, a support mechanism 2, and a handle 3, wherein the support mechanism 2 is movably mounted at one end of the tube body 1, and the handle 3 is mounted at the other end of the tube body 1, and further, the handle 3 has a push mechanism 31, a suction control component 32, a flushing control component 33, and a shell 34, and the push mechanism 31 is connected to the support mechanism 2, and the push mechanism 31 is used to push the support mechanism 2 back and forth. In this way, medical staff can adjust the shape of the support mechanism 2 through the push mechanism 31 on the handle according to the actual gallbladder situation, fit it to the inner wall of the gallbladder to support the gallbladder, prevent the gallbladder mucosa and surrounding tissues from being sucked during the process of sucking stones, thereby avoiding damage and bleeding to the gallbladder mucosa and surrounding tissues; at the same time, by operating the suction control component 32 and the flushing control component 33 respectively, the tube body 1 can achieve the attraction of stones in the gallbladder and flushing of the gallbladder, thereby shortening the operation time and improving the operation efficiency.

[0052] Exemplary Support Mechanisms

[0053] like Figure 1-Figure 5 As shown, further, some embodiments of the present invention provide a specific structure of the above-mentioned support mechanism 2, wherein the support mechanism 2 of the structure includes a plurality of support wires 21, and each support wire 21 is inserted into the tube body 1. It can be understood that the number of the support wires 21 is greater than or equal to 3, wherein, Figure 2 As shown in a, it is the state when the number of supporting wires 21 is 4. Figure 2 As shown in b, it is a state when the number of support wires 21 is 3. If necessary, the number of support wires 21 can be more.

[0054] In order to realize the support of the gallbladder by the support mechanism 2, one ends of a plurality of support wires 21 in the support mechanism 2 are connected to each other, and the plurality of support wires 21 are distributed in an ellipsoidal, diamond or spiral shape around the central axis, so that the support mechanism 2 is a basket structure, and the support mechanism 2 covers the main cavity and cannot be eccentric;

[0055] The multiple support wires 21 of the above structure can conveniently support the inner wall of the gallbladder, and the other ends of the multiple support wires 21 are connected to the pushing mechanism 31, so that the pushing mechanism 31 can pull the multiple support wires 21 to reciprocate in the tube body 1.

[0056] It should be noted that Figure 1This is a schematic diagram of the overall structure of the catheter when the support mechanism 2 of the stone removal catheter is fully released. The stone removal catheter is used in conjunction with an endoscope (not shown), and is mostly used to remove gallbladder stones after lithotripsy. First, insert the tube body 1 along the biopsy channel of the endoscope, and then extend it from the head end of the endoscope. Then, the shape of the support mechanism 2 is adjusted and the release of the support mechanism 2 is completed by pulling and pushing the pushing mechanism 31 at the handle end. The pushing mechanism 31 in the handle 3 has a position locking function, and the position can be locked after the structural adjustment of the support mechanism 2 is completed to prevent the support mechanism 2 from deforming during the operation.

[0057] Figure 3 The shape of the distal end of the catheter when the support mechanism 2 is partially released can be adjusted according to the condition of the gallbladder to achieve the effect of fitting with the inner wall of the gallbladder to support the gallbladder. The shape of the basket is determined by the distribution of the support wires 21.

[0058] like Figure 6 As shown, further, the support wire 21 is a single-segment structure or a multi-segment structure. Specifically, the proximal end of the support wire 21 is a four-wire structure, and the distal end is a sixteen-wire structure. This structure can expand the contact area between the support mechanism 2 and the inner wall of the gallbladder, improve stability, and improve the support effect.

[0059] Exemplary Tube

[0060] like Figure 1-Figure 2 As shown, further, some embodiments of the present invention provide a specific structure of the above-mentioned tube body 1, in which the tube body 1 has a suction channel 12, and a plurality of wire-threading channels 11 are opened on the tube wall of the tube body 1, and the plurality of wire-threading channels 11 are evenly distributed around the suction channel 12, and the plurality of wire-threading channels 11 pass through the tube body 1, and then the support mechanism 2 passes through the plurality of wire-threading channels 11 and is connected to the pushing mechanism 31. Among them, through the tube body 1 of this structure, the suction channel 12 inside it can realize the attraction of stones in the gallbladder on the one hand, and on the other hand, after the stones are attracted, the gallbladder is flushed through the suction channel 12, thereby shortening the operation time and improving the operation efficiency.

[0061] like Figure 3-Figure 6 As shown, further, in some embodiments of the present invention, the tube body 1 has a suction channel 12 and a plurality of flushing channels 13, and a plurality of wire threading channels 11 are opened on the tube wall of the tube body 1, and the plurality of wire threading channels 11 are evenly distributed around the suction channel 12, and the plurality of wire threading channels 11 pass through the tube body 1, and then the supporting mechanism 2 passes through the plurality of wire threading channels 11 and is connected to the pushing mechanism 31; on the one hand, the stones in the gallbladder can be attracted through the suction channel 12, and on the other hand, after the stones are attracted, the gallbladder is flushed through the flushing channel 13, thereby shortening the operation time and improving the operation efficiency.

[0062] like Figure 7 As shown, the above-mentioned suction channel 12 and several flushing channels 13 also pass through the tube body 1. It can be understood that the shape of the suction channel 12 can be circular, semicircular, rectangular, crescent or other special shapes, so that a sufficiently large suction channel 12 can improve the suction efficiency. The flushing channel 13 is one or more lumens, and the shape can be circular, semicircular, rectangular, crescent or other special shapes.

[0063] When the flushing channel 13 has multiple lumens, they can be evenly distributed in the circumferential direction of the tube body, which can make the flushing more uniform and have a better flushing effect on fine gravel.

[0064] In addition, the flushing channels 13 can be concentrated on one side of the tube body 1 or distributed in other special ways. Figure 7 The cross-sectional views of the four types of tube bodies 1 are typical examples of the combination of technical features of the above-mentioned embodiments. It can be seen intuitively that the suction channel 12 and the flushing channel 13 can allow flushing and suction to be carried out simultaneously, which can improve the efficiency of stone removal, shorten the operation time, and reduce the patient's discomfort during the operation.

[0065] The stone suction function is to connect the suction channel 12 to an external suction device (not shown) and use the principle of negative pressure to suction the broken stones and excess flushing fluid in the gallbladder. After the flushing and suction operations are completed, the support mechanism 2 is retracted by pulling and pushing the mechanism 31. Figure 3 It is the shape of one end of the tube body 1 when the supporting mechanism 2 is fully retracted.

[0066] The flushing function is to supply flushing liquid (medical saline) to the proximal end of the flushing channel 13 of the stone removal catheter through an external liquid supply device (not shown) to flush the broken stones in the gallbladder, flush the broken stones in the gallbladder to the bile duct and duodenal papilla and finally fall into the intestine and be discharged from the body.

[0067] Since the gallbladder is supported by the support mechanism 2, there is no risk of absorbing the gallbladder mucosa and surrounding tissues, thus avoiding damage and bleeding to the gallbladder mucosa and surrounding tissues. The stone removal catheter body 100 of the present invention can also be used to remove stones in the bile duct, which is consistent with the stone removal operation in the gallbladder.

[0068] Since the support mechanism 2 in the above embodiment is a simple basket structure, there is a risk of deformation of the basket due to extrusion during the support process. Figure 7 As shown, the structure of one end of the tube body 1 when the support mechanism 2 is deformed due to extrusion. Since the tip of the basket is only fixedly connected by a plurality of support wires 21, it is easy to deform when subjected to a large extrusion force.

[0069] Therefore, if Figure 9-11As shown, in other embodiments of the present invention, the above-mentioned support mechanism 2 includes a plurality of support wires 21 and a support member 23, wherein the number of the plurality of support wires 21 is greater than or equal to 3, the support wires 21 are inserted into the wire threading channel 11 of the tube body 1, and one end of the plurality of support wires 21 is connected to the support member 23, and the other end is connected to the pushing mechanism 31, wherein the support member 23 here can be designed to be sheet-shaped, and one end of the plurality of support wires 21 is connected to the sheet-shaped support member 23. At this time, the support member 23 has sufficient strength, so that the support mechanism 2 will not undergo any deformation when squeezed, thereby improving the support effect and enhancing the stability of the support mechanism 2.

[0070] Among them, it should be noted that Figure 8 This is the shape of one end of the tube body 1 when the support mechanism 2 is fully released. At this time, the diameter of the support mechanism 2 is the largest. Fig. 9 The shape of one end of the tube body 1 during the retraction process of the support mechanism 2; Fig.10 This is the shape of one end of the tube body 1 when the supporting mechanism 2 is fully retracted.

[0071] like Figure 1 , Figure 12-Figure 15 As shown, some embodiments of the present invention also provide another structure of the support mechanism 2. In the stone removal operation, a conical expansion catheter (not shown) and other instruments are also used to assist in stone removal. At this time, it is necessary to have sufficient channels at the head end of the stone removal catheter to facilitate the subsequent entry and exit of instruments and surgical operations.

[0072] The support member 23 in the support mechanism 2 can be designed to be annular and have elasticity, and one end of the plurality of support wires 21 is connected to the support member 23. At this time, the annular support member 23 provides sufficient channels for the use of auxiliary stone removal instruments such as a conical dilatation catheter (not shown), which is convenient for subsequent surgical operations. At the same time, the structure of the annular support member 23 also prevents the basket from being deformed when squeezed, thereby improving the support effect and the stability of the support mechanism 2.

[0073] Among them, it should be noted that Fig.12 The shape of one end of the tube body 1 when the supporting mechanism 2 is partially released, and the specific release situation can be adjusted according to the situation of the gallbladder to achieve the effect of fitting with the inner wall of the gallbladder to support the gallbladder; Fig.13 It is the shape of one end of the tube body 1 when the supporting mechanism 2 is fully retracted.

[0074] Fig.15It is a typical case of a cross-sectional view in which the suction channel 12 and the flushing channel 13 each have their own separate lumens. The suction channel 12 is usually one lumen, which may be circular, semicircular, rectangular, crescent or other special shapes, and the flushing channel 13 is one or more lumens, which may be circular, semicircular, rectangular, crescent or other special shapes. The distribution may be uniformly distributed in the circumferential direction of the tube body, or concentrated on one side of the tube body or in other special distribution methods.

[0075] like Figure 16-Figure 18 As shown, further, in some other embodiments of the present invention, a suction channel 12 and a flushing channel 13 are provided in the tube body 1, and a plurality of semi-penetrating channels 11a and a plurality of through-wire channels 14 are arranged on the tube wall of the tube body 1, and the plurality of semi-penetrating channels 11a and the plurality of through-wire channels 14 are evenly distributed around the suction channel 12, wherein the plurality of semi-penetrating channels 11a in this embodiment do not penetrate the tube wall of the tube body 1, while the plurality of through-wire channels 14 penetrate the tube wall of the tube body 1, and at the same time, the supporting mechanism 2 includes a plurality of supporting wires 21 and supporting members 23, the number of the plurality of supporting wires 21 is greater than 3, and the supporting wires 21 are respectively arranged in the plurality of semi-penetrating channels 11a and the plurality of through-wire channels 14, wherein one end of the plurality of supporting wires 21 is installed on the supporting member 23, wherein the supporting member 23 is annular, and the other end of the plurality of supporting wires 21 passes through the plurality of through-wire channels 14 and is connected to the pushing mechanism 31. Here, the number of the plurality of through-wire channels 14 can be set to 1, and the number of the corresponding plurality of support wires 21 is also set to 1, and the remaining plurality of support wires 21 can be selected to have a length corresponding to the half-through-wire channel 11a;

[0076] Therefore, through the action of the pushing mechanism 31, the support member 23 can be pushed outward from the wire passage 14, or pulled back into the wire passage 14, that is, by pulling and pushing the pushing mechanism 31 on the handle, the movable support wire 21 is controlled, the shape of the support mechanism 2 is adjusted, and the release and retraction of the support mechanism 2 are completed.

[0077] Among them, it should be noted that Fig.16 This is the shape of one end of the tube body 1 when the support mechanism 2 is fully released. At this time, the diameter of the support mechanism 2 is the largest. Fig.17 The shape of one end of the tube body 1 during the retraction process of the support mechanism 2; Fig.18 This is the shape of one end of the tube body 1 when the supporting mechanism 2 is fully retracted.

[0078] Exemplary Push Mechanism

[0079] like Figure 19-Figure 24 , Figure 28-Figure 29As shown, further, some embodiments of the present invention provide a specific structure of the above-mentioned pushing mechanism 31, the pushing mechanism 31 of the structure includes a pushing key 311, a spring 312, a first spring 313, and a slide 314, the spring 312 is arranged at the bottom of the pushing key 311, one end of the first spring 313 is connected to the spring 312, and the other end of the first spring 313 is connected to the slide 314, and the spring 312 includes two tooth blocks 3121, and the inner side of the upper surface of the shell 34 is provided with a plurality of tooth block grooves 341, when in use, the pushing key 311 can be pressed, thereby compressing the first spring 313 inside, so that the tooth block 3121 and the tooth block The groove 341 is separated, so that the slide 314 can be moved on the inner side of the upper surface of the shell 34, and the slide 314 can pull the support wire 21 in the support mechanism 2 in the shell 34, so as to adjust the shape of the support mechanism 2, fit it to the inner wall of the gallbladder to support the gallbladder, prevent the gallbladder mucosa and surrounding tissues from being sucked during the process of aspirating stones, thereby avoiding damage and bleeding to the gallbladder mucosa and surrounding tissues; after releasing the push button 311, the first spring 313 supports the tooth block 3121, and then the tooth block 3121 stays in the tooth block groove 341, and the cooperation between the tooth block 3121 and the tooth block groove 341 provides a locking effect for the support mechanism 2.

[0080] Exemplary Attraction Control Components

[0081] Furthermore, some embodiments of the present invention provide a specific structure of the above-mentioned suction control component 32, where the suction control component 32 of the structure includes an operation button 321, a second spring 322, a driver 323, and a ratchet 324. The operation button 321 is fixed on the driver 323, one end of the second spring 322 is fixed to the step 3231 on the driver 323, and the other end is connected to the inner surface of the shell 34, and a first negative pressure regulating hole 3241 is provided on the ratchet 324, and a negative pressure inner tube 30 is penetrated by the ratchet 324, and the negative pressure inner tube 30 is connected to an external negative pressure power source (not shown), and a second negative pressure regulating hole 301 is provided on the negative pressure inner tube 30, so by pressing the operation button 321, the driver 323 pushes the ratchet 324 to rotate, so that the first negative pressure regulating hole 3241 on the ratchet 324 and the second negative pressure regulating hole 301 are aligned with different gears to control the negative pressure intensity, thereby facilitating suction by providing different negative pressure intensities. For example, the number of first negative pressure regulating holes 3241 can be designed to be 9, while the number of second negative pressure regulating holes 301 is 6. At the maximum negative pressure intensity gear, one first negative pressure regulating hole 3241 is aligned with one second negative pressure regulating hole 301; at the middle negative pressure intensity gear, three first negative pressure regulating holes 3241 are aligned with three second negative pressure regulating holes 301; at the minimum negative pressure intensity gear, six first negative pressure regulating holes 3241 are aligned with six second negative pressure regulating holes 301.

[0082] Exemplary Flush Control Assembly

[0083] Furthermore, some embodiments of the present invention provide a specific structure of the flushing control component 33, wherein the flushing control component 33 of this structure includes a cross tube body 331 and a rotary valve 332. The rotary valve 332 is provided with a water hole 3321, and the rotary valve 332 is connected to the cross tube body 331. Here, the outer end 3310 of the cross tube body 331 is connected to an external water supply power unit (not shown), and the rotary valve 332 is rotatably inserted in the cross tube body 331. Therefore, by rotating the rotary valve 332, the overlap size of the water hole 3321 and the cavity of the cross tube body 331 is achieved, thereby controlling the flow rate of the water flow and realizing the flushing function.

[0084] like Figure 25-Figure 29 As shown, another gallbladder and bile duct stone removal catheter with a supporting function provided by the present invention includes: a stone removal catheter body 100, the stone removal catheter body 100 includes a tube body 1, a support mechanism 2, a handle 3, and a sheath 25, the sheath 25 is arranged on the handle 3, the tube body 1 is movably arranged in the sheath 25, the support mechanism 2 includes a support wire 21 and a support member 23, the number of the support wires 21 is greater than or equal to 3, one end of the plurality of support wires 21 is connected to the support member 23 (here the support member 23 is annular), the other end of the support wire 21 is connected to one end of the tube body 1, and the other end of the tube body 1 is connected to the pushing mechanism 31 on the handle 3, wherein the support mechanism 2 should cover the suction channel 12 and cannot be eccentric.

[0085] Among them, it should be noted that Fig.25 Schematic diagram of the use of the tube body 1 when the support mechanism 2 is fully released. The tube body 1 and the sheath tube 25 are used in conjunction with an endoscope (not shown). The tube body 1 has a suction channel 12. When in use, the stone removal catheter body 100 is first inserted along the biopsy channel of the endoscope and then extended from the head end of the endoscope. Then, by pulling and pushing the pushing mechanism 31 on the handle, the tube body 1 is extended from the head end of the sheath tube 25. The shape of the support mechanism 2 is adjusted by controlling the extension of the tube body 1 and the release of the support mechanism 2 is completed.

[0086] Fig.26 This is a schematic diagram of the use of the tube body 1 when the support mechanism 2 is partially released. The specific release situation can be adjusted according to the situation of the gallbladder to achieve the effect of fitting with the inner wall of the gallbladder to support the gallbladder.

[0087] There is a handle 3 on the other end of the tube body 1. When the structural adjustment of the support mechanism 2 is completed, it can be fixed by the pushing mechanism 31 in the handle 3 to prevent the support mechanism 2 from moving during the operation. After supporting the gallbladder, subsequent flushing and suction can be carried out.

[0088] Fig. 27 This is a schematic diagram of the use of the tube body 1 when the support mechanism 2 is in the retracted state. Fig.28As shown, further, the flushing channel 13 can be a gap between the sheath tube 25 and the tube body 1. At this time, the flushing control component 33 in the handle 3 extends into the sheath tube 25 through the housing 34, thereby achieving a flushing effect.

[0089] like Fig.28 , 29 As shown, in this embodiment, the slide cylinder 314 in the pushing mechanism 31 is connected to the other end of the tube body 1.

[0090] Furthermore, in the embodiment of the present invention, all the above-mentioned support wires 21 can be made of medical nickel-titanium shape memory alloy. The nickel-titanium alloy wire can provide sufficient support force, and its surface is relatively smooth, which can avoid scratching the inner wall of the gallbladder.

[0091] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0092] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0093] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A gallbladder and bile duct stone removal catheter with a supporting function, characterized in that: include: A stone removal catheter body (100), the stone removal catheter body (100) comprising a tube body (1), a support mechanism (2), and a handle (3); the support mechanism (2) is movably arranged at one end of the tube body (1); the handle (3) is arranged at the other end of the tube body (1); the handle (3) is provided with a pushing mechanism (31), a suction control component (32), a flushing control component (33), and a shell (34); the pushing mechanism (31) is connected to the support mechanism (2); and the pushing mechanism (31) is used to push the support mechanism (2) back and forth.

2. A gallbladder and bile duct stone removal catheter with a supporting function according to claim 1, characterized in that: The support mechanism (2) comprises a plurality of support wires (21), the support wires (21) being inserted into the tube body (1), one ends of the plurality of support wires (21) being connected to each other, the other ends of the plurality of support wires (21) being connected to the pushing mechanism (31), and the plurality of support wires (21) being distributed in an ellipsoidal, diamond or spiral shape in the circumferential direction around the central axis, and the support wires (21) being a single-segment structure or a multi-segment structure.

3. The gallbladder and bile duct stone removal catheter with support function according to claim 1, characterized in that: The support mechanism (2) comprises a plurality of support wires (21) and a support member (23); the support wires (21) are inserted into the tube body (1); one end of the plurality of support wires (21) is connected to the support member (23); and the other ends of a plurality of support wires (21) are connected to a pushing mechanism (31); The support member (23) is in the form of a sheet, or in the form of a ring, and has elasticity, and one end of a plurality of the support wires (21) is connected to the support member (23).

4. A gallbladder and bile duct stone removal catheter with a supporting function according to any one of claims 2 to 3, characterized in that: The tube body (1) has a suction channel (12) and a plurality of flushing channels (13) in it, and a plurality of wire threading channels (11) are arranged on the tube wall of the tube body (1), the plurality of wire threading channels (11) pass through the tube body (1), the suction channel (12) and the plurality of flushing channels (13) pass through the tube body (1), and the support wire (21) passes through the plurality of wire threading channels (11) and is connected to a pushing mechanism (31).

5. The gallbladder and bile duct stone removal catheter with support function according to claim 3, characterized in that: When the support member (23) is annular, the tube body (1) has a suction channel (12) and a plurality of flushing channels (13), and a plurality of semi-penetrating channels (11a) and a plurality of thread-through channels (14) are arranged on the tube wall of the tube body (1), and the plurality of semi-penetrating channels (11a) and the plurality of thread-through channels (14) are evenly distributed around the suction channel (12), wherein a plurality of the thread-through channels (14) penetrate the tube wall of the tube body (1), and a plurality of the support wires (21) are respectively arranged in the semi-penetrating channels (11a) and the plurality of thread-through channels (14).

6. A gallbladder and bile duct stone removal catheter with a supporting function according to claim 4 or 5, characterized in that: The pushing mechanism (31) comprises a pushing key (311), a spring sheet (312), a first spring (313), and a slide cylinder (314); the spring sheet (312) is arranged at the bottom of the pushing key (311); one end of the first spring (313) is connected to the spring sheet (312); the other end of the first spring (313) is connected to the slide cylinder (314); the spring sheet (312) comprises two tooth blocks (3121); a plurality of tooth block grooves (341) are arranged on the inner side of the upper surface of the housing (34); the tooth blocks (3121) and the tooth block grooves (341) cooperate to provide a locking effect for the supporting mechanism (2).

7. The gallbladder and bile duct stone removal catheter with support function according to claim 6, characterized in that: The suction control component (32) includes an operation button (321), a second spring (322), a driver (323), and a ratchet (324); the operation button (321) is fixed on the driver (323); one end of the second spring (322) is fixed to a step (3231) on the driver (323), and the other end is connected to the inner surface of the housing (34); and a first negative pressure regulating hole (3241) is provided on the ratchet (324).

8. The gallbladder and bile duct stone removal catheter with support function according to claim 6, characterized in that: The flushing control assembly (33) comprises a cross tube body (331) and a rotary valve (332). The rotary valve (332) is provided with a water hole (3321). The rotary valve (332) is connected to the cross tube body (331). The flushing function is controlled by the rotary valve (332).

9. A gallbladder and bile duct stone removal catheter with a supporting function, characterized in that: include: A stone removal catheter body (100), the stone removal catheter body (100) comprising a tube body (1), a support mechanism (2), a handle (3), and a sheath tube (25), wherein the sheath tube (25) is arranged on the handle (3), the support mechanism (2) comprises a support wire (21) and a support member (23), one end of a plurality of the support wires (21) is connected to the support member (23), the other end of the support wire (21) is connected to one end of the tube body (1), the tube body (1) is movably arranged in the sheath tube (25), and the other end of the tube body (1) is connected to a pushing mechanism (31) on the handle.

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