Biliary tract calculus removing system with expanding and calculus removing balloon and net basket

Abstract

The utility model provides a biliary tract calculus removing system with an expanding and calculus removing balloon and a mesh basket, which comprises a sheathing canal, an expanding calculus removing component arranged at the front part of a sheathing canal body and a handle component arranged at the rear part of the sheathing canal body, and the sheathing canal body is connected with the handle component through an insert injection molding part. The dilation calculus removal assembly comprises a calculus removal mesh basket, a calculus removal balloon and a dilation balloon which are sequentially arranged in the front-back direction of the sheath tube body, the calculus removal mesh basket is located at the foremost end of the sheath tube body, and the handle assembly fills the dilation balloon through the sheath tube body and enables the calculus removal mesh basket and the calculus removal balloon to remove calculus. By integrating the calculus removing net basket, the calculus removing balloon and the balloon dilatation catheter, after the papilla sphincter is cut open, the papilla sphincter is expanded, and large and small calculi in the biliary tract are removed, so that the operation time of instrument replacement is shortened, the operation difficulty is reduced, and the risk of infection of a patient is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially a gall duct calculus removing system with expansion, stone removing balloon and net basket. BACKGROUND

[0002] With the improvement of people's living standards, gall duct system pipe calculus is frequent, if not timely treatment, calculus is easy to block the gall duct and lead to a series of complications. With the progress of medical technology, the traditional open gall duct exploration calculus and laparoscopic gall duct exploration calculus have gradually been replaced by endoscopic retrograde cholangiopancreatography (ERCP). The common calculus removing scheme of ERCP operation includes two steps: first, incision of the lower bile duct papillary sphincter (EST) and endoscopic balloon dilatation of the papillary sphincter (EPBD), after the incision or expansion of the papillary sphincter, the calculus is dragged by the calculus removing basket and / or calculus removing balloon. The calculus removing basket is used for removing large size calculus, and the calculus removing balloon is used for removing residual calculus after the treatment of the calculus removing basket or small size calculus.

[0003] At present, in the ERCP operation, most of the instruments are combined only with the expansion balloon + calculus removing basket or the expansion balloon + calculus removing balloon, such as CN210144707 provides an integrated expansion balloon and net basket calculus removing catheter, which can meet the expansion and shaping of the papillary sphincter and the removal and cleaning of large calculus, but for small calculus and sand-like calculus, the calculus removing balloon needs to be replaced for removal and cleaning; CN203988233U provides a gall duct expansion and calculus removing integrated balloon catheter, which can meet the removal and cleaning of small calculus and sand-like calculus, but for large calculus, the calculus removing balloon is directly used, which has the risk of latex balloon rupture, causing secondary injury to the patient, and the calculus removing basket needs to be replaced for removing large calculus.

[0004] Therefore, it is necessary to design a gall duct calculus removing system with expansion, calculus removing balloon and net basket, which can meet the expansion of the papillary sphincter and the removal of large and small calculus, reduce the operation time of replacing the instruments, reduce the operation difficulty, and reduce the risk of infection of the patient. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a gall duct calculus removing system with expansion, calculus removing balloon and net basket, which integrates the calculus removing basket + calculus removing balloon + balloon expansion catheter, after the incision of the papillary sphincter, the expansion of the papillary sphincter and the removal of large and small calculus in the gall duct are carried out, the operation time of replacing the instruments is reduced, the operation difficulty is reduced, and the risk of infection of the patient is reduced.

[0006] According to one aspect of the utility model, biliary calculus removes system, including sheath pipe, set up in the sheath pipe body front part's expansion calculus removing subassembly and set up in the sheath pipe body rear part's handle subassembly, the sheath pipe body is connected the handle subassembly through insert injection molding piece, the expansion calculus removing subassembly includes the calculus removing basket, calculus removing balloon and expansion balloon who set up in turn along the sheath pipe body front and rear direction, the calculus removing basket is located the most forward end of the sheath pipe body, the handle subassembly is filled through the sheath pipe body to the expansion balloon, and makes the calculus removing basket and calculus removing balloon carry out calculus removing.

[0007] Preferably, the inner part of the sheath pipe body is respectively provided with a first channel, a second channel, a third channel, a fourth channel and a fifth channel, the handle assembly comprises a first handle, a second handle, a third handle, a fourth handle and a fifth handle; the insert injection molding piece is a single-passage pipeline connecting piece; the first handle introduces a guide wire through the insert injection molding piece and the first channel in turn; the second handle injects contrast medium or normal saline through the insert injection molding piece and the second channel in turn; the third handle injects liquid into the expansion balloon through the insert injection molding piece and the third channel in turn; the fourth handle injects gas into the calculus removing balloon through the insert injection molding piece and the fourth channel in turn; the fifth handle makes the calculus removing basket enter and exit the sheath pipe body through the insert injection molding piece and the fifth channel in turn.

[0008] Preferably, the expansion balloon and the calculus removing balloon are respectively sealed on the outside of the sheath pipe body, the expansion balloon is in a columnar structure; and the calculus removing balloon is in a spherical structure.

[0009] Preferably, the outlet of the third channel is located at a position where the expansion balloon is sleeved on the outside of the sheath pipe body; the outlet of the fourth channel is located at a position where the calculus removing balloon is sleeved on the outside of the sheath pipe body; and the first channel and the second channel respectively penetrate through the front and rear ends of the sheath pipe body.

[0010] Preferably, the calculus removing basket is composed of a net head, a basket body, a traction rope and a push-pull handle which are connected in turn, the fifth channel has the traction rope sleeved therein, the fifth channel penetrates through the front and rear ends of the sheath pipe body, one end of the traction rope is connected to the basket body, the other end of the traction rope is connected to the push-pull handle, the push-pull handle is located outside the fifth handle, and the basket body is located outside the front end of the sheath pipe body.

[0011] Preferably, the expansion balloon is hot-melt connected to the sheath pipe body, and the calculus removing balloon is glue-connected to the sheath pipe body.

[0012] Preferably, metal developing rings are respectively arranged at both ends of the range wrapped by the expansion balloon and the calculus removing balloon on the sheath pipe body.

[0013] Preferably, the outer diameter of the front end of the sheath body is 2.3-2.5mm, and the outer diameter of the rear end of the sheath body is 3.8-4.0mm.

[0014] Preferably, the front end of the stone-removing balloon is 10-20mm away from the front end of the sheath body.

[0015] Preferably, the material of the sheath body is nylon or block polyether amide, and the material of the stone-removing balloon is natural rubber, latex or soft polyurethane.

[0016] The utility model discloses an integrated stone-removing basket + stone-removing balloon + balloon dilatation catheter, which is used for dilating and removing large and small stones in the biliary tract after the incision of papillary sphincter, reduces the operation time of replacing instruments, reduces the operation difficulty, and reduces the risk of infection of patients. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the biliary stone removal system;

[0018] Figure 2 It is a cross-sectional view of the sheath body A-A;

[0019] Figure 3 It is a cross-sectional view of the sheath body B-B;

[0020] Figure 4 It is a connection structure schematic view of the stone-removing balloon and the sheath body;

[0021] Figure 5 It is a connection structure schematic view of the dilatation balloon and the sheath body;

[0022] Figure 6 It is a partial structure schematic view of the stone-removing basket. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present application, and make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below. In the following description, a lot of specific details are set forth in order to provide a sufficient understanding of the present application, and the preferred embodiments of the present application are given in the accompanying drawings. However, the present application can be implemented in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. The present application can be implemented in many different ways from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0024] Furthermore, the terms "first", "second", etc. are used herein only to describe different instances, and are not used to denote or imply relative importance or a number of indications of the technical features indicated. Thus, the technical features defined with "first", "second" can explicitly or implicitly include at least one of the technical features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited. In the description of the present application, the meaning of "several" is at least one, such as one, two, etc., unless otherwise explicitly and specifically limited. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used herein are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] In this paper, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements.

[0026] For the convenience of description, in this specification, the sheath body is defined as the distal end, that is, the front end, away from the operator in the length direction during use, and the end held by the operator is the proximal end, that is, the rear end.

[0027] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings of the specification.

[0028] As Figures 1-6As shown, the gallstone removing system with expansion, stone removing balloon and basket of the embodiment includes a sheath tube 5, an expansion and stone removing assembly arranged at the front part of the sheath tube body 5, and a handle assembly arranged at the rear part of the sheath tube body 5, the sheath tube body 5 is connected with the handle assembly through an insert injection part 6, the expansion and stone removing assembly includes a stone removing basket 2, a stone removing balloon 3 and an expansion balloon 4 arranged in sequence along the front and rear direction of the sheath tube body 5, the stone removing basket 2 is located at the front end of the sheath tube body 5, the handle assembly fills the expansion balloon 4 through the sheath tube body 5, and the stone removing basket 2 and the stone removing balloon 3 perform stone removing. In the specific application of the scheme, the gallstone removing system device with expansion, stone removing balloon and basket is sent into an endoscopic biopsy forceps channel, contrast agent is injected, the number, size and distal bile duct and pancreatic duct stenosis of the stones are understood, then the expansion balloon is placed at the stenosis part and contrast agent or physiological saline is injected into the expansion balloon to expand, after the expansion balloon is tightened, the stone removing basket and the stone removing balloon are used to clean the large and small stones and the bile duct and pancreatic duct, the patent integrates the stone removing basket + the stone removing balloon + the balloon expansion catheter, after the papillary sphincter is cut, the papillary sphincter is expanded and the large and small stones are removed, the operation time of the replacement of the instruments is reduced, the operation difficulty is reduced, and the risk of infection of the patient is reduced.

[0029] In some preferred embodiments, the inner part of the sheath body 5 is respectively provided with a first channel 51, a second channel 52, a third channel 53, a fourth channel 54 and a fifth channel 55, which respectively play different roles and realize different functions; the handle assembly includes a first handle 7, a second handle 11, a third handle 9, a fourth handle 10 and a fifth handle 8; the insert injection part 6 is a single-passage pipeline connector; the first handle 7 introduces the guide wire 1 through the insert injection part 6 and the first channel 51 in sequence, realizes effective support and guidance of the overall device, and facilitates smooth advancement of the removal system in the biliary tract, so as to quickly reach the target stone position in the biliary tract; the second handle 11 injects contrast agent or normal saline through the insert injection part 6 and the second channel 52 in sequence, so that the contrast agent plays a good imaging function in the biliary tract, thereby facilitating subsequent biliary tract dilation and biliary stone and transfer work; the third handle 9 injects liquid into the dilation balloon 4 through the insert injection part 6 and the third channel 53 in sequence, for dilation of the inner wall of the biliary tract located at the front position of the device, thereby facilitating the stone removal work of the subsequent stone removal balloon 3 or stone removal basket 2; the fourth handle 10 injects gas into the stone removal balloon 3 through the insert injection part 6 and the fourth channel 54 in sequence; for inflating the stone removal balloon 3, and making the stone removal balloon 3 expand to an appropriate volume and form effective scraping collection of small stones or silt stones in the inner wall of the biliary tract, and transfer and removal of subsequent stones; the fifth handle 7 makes the stone removal basket 21 enter and exit the sheath body 5 through the insert injection part 6 and the fifth channel 55 in sequence, and pushes the stone removal basket 21 out of the front end of the sheath body 5 for transfer and removal of large stones. Through the above five-channel structure of the sheath body 5 and the independent division and common cooperation of the handle assembly, the convenient and orderly performance of multiple functions is realized, which provides good convenience for biliary tract dilation and stone removal work, and thus makes the overall biliary stone removal work orderly and effective.

[0030] Specifically, when the inflation balloon 4 is inflated or other injection operation is performed on the sheath body 5, the sheath body 5 needs to be injected with gas or other substances through the handle assembly, and in order to improve the injection efficiency, the sheath body 5 is connected with the handle assembly through the insert injection part 6, which is preferably a one-way pipe connector, so that the handle assembly can prevent backflow or leakage during the injection of gas or other substances into the sheath body 5, thereby ensuring or improving the material transfer efficiency between the handle assembly and the sheath body 5, and further making the gallstone removal work efficient and safe. In this embodiment, the second channel 52 of the sheath body 5 is connected with the second handle 11 of the handle assembly through the one-way pipe connector 6, so that the second handle 11 can prevent the backflow or leakage of the contrast agent during the injection of the contrast agent into the second channel 52, and the contrast agent can be fully applied in the bile duct to improve the contrast efficiency of the second channel 52; the third channel 53 of the sheath body 5 is connected with the third handle 9 of the handle assembly through the one-way pipe connector 6, so that the third handle 9 can prevent the backflow or leakage of the liquid during the injection of the liquid into the third channel 53, thereby improving the bile duct expansion efficiency of the inflation balloon 4; the fourth channel 54 of the sheath body 5 is connected with the fourth handle 10 of the handle assembly through the one-way pipe connector 6, so that the fourth handle 10 can prevent the backflow or leakage of the gas during the injection of the gas into the fourth channel 54, thereby improving the bile duct stone removal efficiency of the stone balloon 3.

[0031] As shown in Figure 6 , the stone basket 2 is composed of a mesh head 21, a mesh basket body 22, a traction rope 23 and a push-pull handle 12 connected in sequence, the fifth channel 55 is sleeved with the traction rope 23, the fifth channel 55 penetrates through the front and rear ends of the sheath body 5, one end of the traction rope 23 is connected with the mesh basket body 22, and the other end is connected with the push-pull handle 12, the push-pull handle 12 is located outside the fifth handle 7, and the mesh basket body 22 is located outside the front end of the sheath body 5.

[0032] The inflation balloon 4 is hot melt connected with the sheath body 5, and the stone balloon 3 is glue connected with the sheath body 5. The outer diameter of the frontmost end of the sheath body 5 is 2.3mm-2.5mm, and the outer diameter of the rear end of the sheath body 5 is 3.8mm-4.0mm. The front end of the stone balloon 3 is 10mm-20mm away from the frontmost end of the sheath body 5. The material of the sheath body 5 is nylon or block polyether amide, and the material of the stone balloon 3 is natural rubber, latex or soft polyurethane.

[0033] As shown in Figures 4-5As shown, the sheath body 5 is provided with metal developing rings at both ends of the range wrapped by the expansion balloon 4 and the stone balloon 3, the expansion balloon 4 is provided with metal developing rings 41 at both ends, and the stone balloon 3 can be provided with metal developing rings 31 at both ends. The position of the balloon entering the bile duct cavity can be clearly observed, which facilitates treatment, improves efficiency, and ensures treatment effect.

[0034] Further specifically, the expansion balloon 4 and the stone balloon 3 are respectively sealed outside the sheath body 5, the expansion balloon 4 is in a columnar structure, and the stone balloon 3 is in a spherical structure. In order to be more consistent with the structural characteristics of the bile duct, the shape of the stone balloon 3 is set as spherical, and the shape of the expansion balloon 4 is set as columnar. The spherical stone balloon 3 and the columnar expansion balloon 4 are adapted to the internal structural characteristics of the bile duct, so that the stone balloon 3 and the expansion balloon 4 can move and expand adaptively and matchingly along with the structure of the bile duct when they operate in the bile duct, thereby preventing the structure from affecting the advancement, retreat or expansion of the stone balloon 3 and the expansion balloon 4, and facilitating the movement and expansion of the expansion balloon 4 in the bile duct and the contact and collection of the stone balloon 3 with the stones in the bile duct.

[0035] The outlet of the third channel 53 is located at the position where the expansion balloon 4 is wrapped outside the sheath body 5, which facilitates the inflation of the expansion balloon 4; the outlet of the fourth channel 54 is located at the position where the stone balloon 3 is wrapped outside the sheath body 5, which facilitates the inflation of the stone balloon 3; and the first channel 51 and the second channel 52 respectively pass through the front and rear ends of the sheath body 5.

[0036] In use, first, the guide wire 1 is inserted into the first handle 7 and sequentially passes through the single-way pipeline connector 6, the first channel 51 to support and guide the biliary calculus removing system to move in the biliary tract, when reaching the calculus position in the biliary tract, the second handle 11 and the second channel 52 are injected with contrast agent to play the role of contrast in the biliary tract, the position of the biliary calculus and the biliary stenosis are observed to facilitate the biliary dilatation and calculus removing work, the third handle 9 connected with the external injection device is used to inject liquid into the third channel 53 and make the dilatation balloon 4 fully expand to dilate the biliary stenosis, after the dilatation balloon 4 fully dilates the biliary tract, it is deflated, the push-pull handle 12 is pushed forward at this time, the basket body 22 is extended out of the fifth channel 55, the basket body 22 is pushed to the distal end of the calculus, the push-pull handle 12 is rotated and pushed to the proximal end after the calculus is covered, the guide wire 1 is reserved at this time, the biliary calculus removing system is withdrawn, and the calculus is pulled into the duodenum. At this time, if there are still small calculus or mud calculus, the biliary calculus removing system is moved along the guide wire 1 in the biliary tract, when reaching the calculus position in the biliary tract, the second handle 11 and the second channel 52 are injected with contrast agent to play the role of contrast in the biliary tract, the position of the biliary calculus and the biliary stenosis are observed to facilitate the biliary dilatation and calculus removing work, the third handle 9 connected with the external injection device is used to inject liquid into the third channel 53 and make the dilatation balloon 4 fully expand to dilate the biliary stenosis, after the dilatation balloon 4 fully dilates the biliary tract, it is deflated, the fourth handle 10 connected with the external gas injection device is used to inject gas into the calculus removing balloon 3 through the fourth channel 54 to keep the calculus removing balloon 3 in the inflated state, so that the calculus in the biliary tract is contacted and collected, after the biliary calculus is thoroughly cleaned and collected, the calculus removing balloon 3 is deflated, and then the biliary calculus removing system is reasonably removed, and subsequent treatment is performed. According to the clinical requirements, the above steps can be repeated until the biliary calculus is completely cleaned.

[0037] The utility model discloses a kind of integrated calculus removing basket+calculus removing balloon+balloon dilatation catheter, after papillary sphincter is cut, papillary sphincter dilatation and large and small calculus removal are carried out, reduce instrument replacement operation time, reduce operation difficulty, reduce instrument expense, reduce the risk of patient infection.

[0038] It is obvious to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present application without departing from the spirit and scope of the present application. Therefore, it is intended to cover modifications and variations of the present application falling within the scope of the appended claims and their equivalents.

Claims

1. A biliary stone removal system with dilation, stone balloon and basket, comprising a sheath body (5), a dilation and stone removal assembly arranged at the front of the sheath body (5) and a handle assembly arranged at the rear of the sheath body (5), the sheath body (5) being connected to the handle assembly by means of an insert-molded piece (6), characterized in that, The expansion stone removing assembly comprises a stone removing basket (2), a stone removing balloon (3) and an expansion balloon (4) arranged in sequence along the front-rear direction of the sheath body (5), the stone removing basket (2) is located at the most front end of the sheath body (5), the handle assembly fills the expansion balloon (4) through the sheath body (5), and the stone removing basket (2) and the stone removing balloon (3) perform stone removing.

2. The biliary stone clearance system of claim 1, wherein: The inner part of the sheath body (5) is respectively provided with a first channel (51), a second channel (52), a third channel (53), a fourth channel (54) and a fifth channel (55), the handle assembly comprises a first handle (7), a second handle (11), a third handle (9), a fourth handle (10) and a fifth handle (8); the insert injection molding part (6) is a single-channel pipeline connecting part; The first handle (7) introduces a guide wire (1) through the insert injection molding part (6) and the first channel (51) in sequence; The second handle (11) injects contrast agent or normal saline through the insert injection molding part (6) and the second channel (52) in sequence; The third handle (9) injects liquid into the expansion balloon (4) through the insert injection molding part (6) and the third channel (53) in sequence; The fourth handle (10) injects gas into the stone removing balloon (3) through the insert injection molding part (6) and the fourth channel (54) in sequence; The fifth handle (8) makes the stone removing basket (2) enter and exit the sheath body (5) through the insert injection molding part (6) and the fifth channel (55) in sequence.

3. The biliary stone clearance system of claim 2, wherein: The expansion balloon (4) and the stone removing balloon (3) are respectively sealed on the outside of the sheath body (5), the expansion balloon (4) is in a columnar structure; and the stone removing balloon (3) is in a spherical structure.

4. The biliary stone clearance system of claim 3, wherein: The outlet of the third channel (53) is located at the position where the expansion balloon (4) is sleeved on the outside of the sheath body (5); the outlet of the fourth channel (54) is located at the position where the stone removing balloon (3) is sleeved on the outside of the sheath body (5); and the first channel (51) and the second channel (52) respectively penetrate through the front and rear ends of the sheath body (5).

5. The biliary stone clearance system of claim 2, wherein: The stone removing basket (2) is composed of a net head (21), a basket body (22), a traction rope (23) and a push-pull handle (12) connected in sequence, the fifth channel (55) has the traction rope (23) sleeved therein, the fifth channel (55) penetrates through the front and rear ends of the sheath body (5), one end of the traction rope (23) is connected to the basket body (22), the other end of the traction rope (23) is connected to the push-pull handle (12), the push-pull handle (12) is located outside the fifth handle (8), and the basket body (22) is located outside the front end of the sheath body (5).

6. The biliary stone clearance system of claim 3, wherein: The expansion balloon (4) is hot-melt connected with the sheath body (5), and the stone removing balloon (3) is glue-connected with the sheath body (5).

7. The biliary stone clearance system of claim 3, wherein: Metal development rings are respectively arranged at the two ends of the sheath body (5) within the range wrapped by the expansion balloon (4) and the stone removing balloon (3).

8. The biliary stone clearance system of claim 1, wherein: The outer diameter of the front end of the sheath body (5) is 2.3-2.5 mm, and the outer diameter of the rear end of the sheath body (5) is 3.8-4.0 mm.

9. The biliary stone clearance system of claim 1, wherein: The front end of the stone extraction balloon (3) is 10-20 mm away from the front end of the sheath body (5).

10. The biliary stone clearance system of claim 1, wherein: The material of the sheath body (5) is nylon or block polyether amide, and the material of the stone extraction balloon (3) is natural rubber, latex or soft polyurethane.

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