Bladder puncture fistulization device

Abstract

The utility model relates to a bladder puncture fistulization device which comprises a puncture needle, a guide wire and a fistulization tube. The puncture needle comprises a puncture cannula and a puncture needle core, the puncture needle core can be movably inserted into or pulled out of the puncture cannula, and the puncture needle core is used for puncturing the bladder; the guide wire can be movably inserted into or pulled out of the puncture cannula, and the front end of the guide wire is bent and used for being inserted into the bladder; the fistulization tube comprises a fistulization sleeve and a fistulization guide core, the fistulization guide core can be movably inserted into or pulled out of the fistulization sleeve, the fistulization tube is used for being arranged outside the guide wire in a sleeving mode, and the fistulization tube is guided by the guide wire to stretch into the bladder. According to the technical scheme, a guide wire is additionally arranged. After the puncture needle is punctured, the guide wire is inserted, and then the fistulization tube is punctured into the bladder along the guide wire. Due to the fact that the fistulization guide core is guided by the guide wire, the fistulization guide core is accurate in positioning, the front end of the fistulization guide core can penetrate through the front wall of the bladder even if the front end of the fistulization guide core is not sharp, and bladder tissue is not prone to being damaged due to overexertion when the fistulization guide core is used.

Description

Technical Field

[0001] The utility model relates to the field of bladder puncture, in particular to a bladder puncture fistula device. Background Art

[0002] Cystostomy is a commonly used medical technology. For patients with severe urinary tract obstruction, when it is impossible to insert a catheter retrogradely from the urethral opening to complete urinary catheterization, cystostomy is required to solve the urethral obstruction and place a cystostomy tube. The cystostomy tube is made of rubber or silicone and is inserted into the bladder through the skin through the cystostomy opening to guide urine outflow. After the cystostomy tube is inserted into the bladder, there is an air bag or water bag near the head of the cystostomy tube to fix the cystostomy tube in the bladder and prevent it from falling out. The tail end of the cystostomy tube is connected to a urine bag with a special connector to collect urine.

[0003] However, the tips of most existing puncture devices are triangular or conical. The triangular tip will cut the bladder muscle layer and easily damage the blood vessels on the anterior wall of the bladder; while the conical tip is not easy to penetrate the anterior wall of the bladder and requires greater force, which is easy to puncture the posterior wall of the bladder and damage the rectum or blood vessels. Utility Model Content

[0004] In view of the above problems, the present application provides a bladder puncture and fistula device to solve the technical problem that most of the existing puncture devices are triangular or conical, which are easy to damage the rectum or blood vessels during use.

[0005] To achieve the above-mentioned purpose, the inventor provides a bladder puncture and fistula device, including a puncture needle, a guide wire and a fistula tube; the puncture needle includes a puncture sleeve and a puncture needle core, the puncture needle core can be movably inserted into or pulled out of the puncture sleeve, and the puncture needle core is used to puncture the bladder; the guide wire can be movably inserted into or pulled out of the puncture sleeve, the front end of the guide wire is bent, and the front end of the guide wire is used to insert into the bladder; the fistula tube includes a fistula sleeve and a fistula guide core, the fistula guide core can be movably inserted into or pulled out of the fistula sleeve, the fistula tube is used to be sleeved outside the guide wire, and the fistula tube is guided into the bladder through the guide wire.

[0006] Different from the prior art, the technical solution of the present application is provided with a guide wire on the basis of the puncture needle and the fistula tube. After the puncture needle is punctured, the guide wire is inserted, and then the fistula tube is inserted into the bladder along the guide wire. Since the fistula guide core is guided by the guide wire, the fistula guide core is accurately positioned, and even if the front end of the fistula guide core is not sharp, it can penetrate the anterior wall of the bladder, and it is not easy to damage the bladder tissue by excessive force during use. In actual use, first, the puncture needle is directly punctured into the bladder, and the puncture needle core is removed; secondly, the guide wire is inserted into the bladder along the puncture cannula, and the curved front end of the guide wire is left in the bladder, and the puncture cannula is withdrawn while retaining the guide wire; again, the fistula tube is inserted into the bladder along the guide wire; finally, the fistula guide core is pulled out, leaving the fistula cannula.

[0007] As an embodiment of the utility model, the bladder puncture fistula device also includes a fixing component, which is installed on the fistula sleeve. The fixing component is used to fix the fistula sleeve in the bladder after the fistula guide core is pulled out of the fistula sleeve, and the fistula sleeve has a petal shape.

[0008] In this way, the ostomy sleeve can be fixed in the bladder under the action of the fixing assembly. Specifically, the fixing assembly mainly protrudes in a petal shape, thereby fixing the ostomy sleeve in the bladder. Optionally, the protruding petal shape can be a flexible material to avoid damaging the bladder tissue. In some embodiments, the petal shape can protrude along a first direction or other circumferential directions.

[0009] As an embodiment of the present utility model, the fixing assembly includes a first magnetic component and a second magnetic component. The first magnetic component and the second magnetic component are installed on the fistula sleeve at intervals along the second direction, and the first magnetic component and the second magnetic component are magnetically connected.

[0010] In this way, according to the magnetic connection between the first magnetic component and the second magnetic component, when the fistula guide core is pulled out of the fistula sleeve, the fistula guide core cancels its effect on the fistula sleeve, and the front end of the fistula sleeve is magnetically attracted to form a petal shape under the action of the magnetic connection, thereby fixing the fistula sleeve in the bladder. When the fistula sleeve needs to be taken out, the fistula guide core is reinserted into the fistula sleeve to straighten the fistula sleeve and cancel the magnetic connection. Optionally, the first magnetic component and the second magnetic component are installed at intervals on the front end of the fistula sleeve along the second direction, which is convenient for magnetic attraction while preventing the fistula sleeve from staying in the bladder for too long. The distance between the first magnetic component and the second magnetic component installed on the fistula sleeve can be determined according to actual usage, so that the petal shape will not be too large to damage the bladder tissue.

[0011] As an implementation mode of the present invention, the first magnetic component and the second magnetic component are both magnets.

[0012] In this way, the first magnetic part and the second magnetic part are both magnets, and the magnetic attraction is stronger, which facilitates forming a petal shape.

[0013] As an implementation manner of the present utility model, the first magnetic component is a magnet, and the second magnetic component is a metal block; or the first magnetic component is a metal block, and the second magnetic component is a magnet.

[0014] In this way, in addition to setting the first magnetic component and the second magnetic component as magnets, one of the magnetic components can be set as a metal block and the other magnetic component can be set as a magnet to achieve magnetic connection.

[0015] As an embodiment of the present utility model, the bladder puncture and fistula device includes at least two fixing components, wherein the two fixing components are symmetrically arranged.

[0016] In this way, two symmetrically arranged fixing components are provided, thereby ensuring that the ostomy sleeves on different sides have fixing components, thereby better fixing the ostomy sleeve in the bladder.

[0017] As an implementation mode of the utility model, the bladder puncture and fistula device includes four fixing components, and the fixing components are symmetrically arranged in pairs.

[0018] Thus, four fixing components are provided and two fixing components are symmetrically arranged, so that the fistula sleeve can be better and more firmly fixed in the bladder. In some embodiments, since the fistula sleeve is cylindrical, theoretically, multiple fixing components can be provided along the circumference of the fistula sleeve, and the number of fixing components can be determined according to actual use.

[0019] As an embodiment of the utility model, the fistula tube also includes a connecting device, which includes a connecting head and a docking head; the connecting head is installed at the rear end of the fistula guide core, the connecting head has an internal thread, and the docking head is installed at the rear end of the fistula sleeve, and the docking head is used to lock with the internal thread of the connecting head to fix the fistula guide core and the fistula sleeve.

[0020] In this way, the fistula guide core is fixedly connected to the fistula sleeve by the connecting device. Specifically, the fistula sleeve is locked with the internal thread at the tail end of the fistula guide core, so that the head end of the fistula sleeve remains straight, which is convenient for puncturing the bladder. When the fistula tube needs to be connected to a common drainage bag used in daily life, the docking head can be removed.

[0021] As an implementation mode of the present utility model, the front end of the guide wire is curved in a circular shape.

[0022] Thus, the front end of the guide wire is bent into a circle, which is more accurate in positioning than the conventional J-shaped guide wire. When the fistula guide core reaches the front end of the guide wire, it can significantly increase the friction feel when it touches the circle, making it easier to indicate that the fistula tube has been placed in place.

[0023] As an implementation mode of the utility model, the front end of the fistula guide core is conical.

[0024] Thus, the front end of the ostomy guide core is conical, which can better expand the bladder wall tissue under the action of the guide wire and is not easy to damage the bladder tissue. Optionally, the front end of the ostomy guide core is conical, slightly pointed and has a hole with a smooth surface, and the hole is used for the guide wire to pass through.

[0025] The above-mentioned records related to the content of the utility model are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation method and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present application and other related contents, and shall not be considered as limitations of the present application.

[0027] In the drawings of the specification:

[0028] Figure 1 A schematic diagram of a puncture needle according to an embodiment of the present application;

[0029] Figure 2 This is a schematic diagram of pulling out the puncture cannula from the puncture needle core according to one embodiment of the present application;

[0030] Figure 3 This is a schematic diagram of inserting a guide wire into a puncture cannula according to an embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of a puncture cannula being pulled out relative to a guide wire according to an embodiment of the present application;

[0032] Figure 5 This is a schematic diagram of inserting a guide wire into a fistula tube according to an embodiment of the present application;

[0033] Figure 6 This is a schematic diagram of a docking head being disconnected from a connecting head according to an embodiment of the present application;

[0034] Figure 7 This is a schematic diagram of a fistula guide core and a guide wire being pulled out of a fistula cannula according to an embodiment of the present application;

[0035] Figure 8 for Figure 7 A is an enlarged view of the middle image.

[0036] The reference numerals in the above drawings are described as follows:

[0037] 1. Puncture needle;

[0038] 11. Puncture cannula;

[0039] 12. Puncture needle core;

[0040] 2. Guide wire;

[0041] 3. Fistula tube;

[0042] 31. Fistula cannula;

[0043] 32. Stoma guide core;

[0044] 33. Connecting device;

[0045] 331, connector;

[0046] 3311, internal thread;

[0047] 332. Butt joint;

[0048] 4. Fix the components;

[0049] 41. a first magnetic member;

[0050] 42. a second magnetic member;

[0051] a. First direction;

[0052] b. Second direction. DETAILED DESCRIPTION

[0053] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0054] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0055] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0056] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0057] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0058] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0059] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0060] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0061] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0062] Most of the existing puncture devices have a triangular or conical tip. The triangular tip will cut the bladder muscle layer and easily damage the blood vessels on the anterior wall of the bladder; while the conical tip is not easy to penetrate the anterior wall of the bladder, and requires a lot of force. It is easy to use too much force and pierce the posterior wall of the bladder, damaging the rectum or blood vessels. The applicant discovered the above problem and added a guide wire 2 on the basis of the puncture needle 1 and the fistula tube 3. After the puncture needle 1 is inserted, the guide wire 2 is inserted, and then the fistula tube 3 is inserted into the bladder along the guide wire 2. Since the fistula guide core 32 is guided by the guide wire 2, the fistula guide core 32 is accurately positioned, and even if the front end of the fistula guide core 32 is not sharp, it can penetrate the anterior wall of the bladder, and it is not easy to use too much force to damage the bladder tissue during use.

[0063] The bladder puncture and fistula device of the present application is mainly used to solve urethral obstruction.

[0064] According to some embodiments of the present application, please refer to Figures 1 to 8 The present embodiment relates to a bladder puncture and fistula device, comprising a puncture needle 1, a guide wire 2 and a fistula tube 3; the puncture needle 1 comprises a puncture sleeve 11 and a puncture needle core 12, the puncture needle core 12 can be movably inserted into or pulled out of the puncture sleeve 11, and the puncture needle core 12 is used to puncture the bladder; the guide wire 2 can be movably inserted into or pulled out of the puncture sleeve 11, the front end of the guide wire 2 is bent, and the front end of the guide wire 2 is used to insert into the bladder; the fistula tube 3 comprises a fistula sleeve 31 and a fistula guide core 32, the fistula guide core 32 can be movably inserted into or pulled out of the fistula sleeve 31, the fistula tube 3 is used to be sleeved outside the guide wire 2, and the fistula tube 3 is guided into the bladder by the guide wire 2.

[0065] The front end of the puncture needle 1 may be frosted to facilitate identification when B-ultrasound positioning is required during surgery.

[0066] The cavity between the fistula sleeve 31 and the fistula guide core 32 can be lubricated with an aqueous lubricant to facilitate insertion or removal.

[0067] Among them, the front end refers to the end that is inserted into or close to the bladder, and the back end refers to the end that is away from the bladder.

[0068] The technical solution of the present application is provided with a guide wire 2 on the basis of the puncture needle 1 and the fistula tube 3. After the puncture needle 1 is punctured, the guide wire 2 is inserted, and then the fistula tube 3 is inserted into the bladder along the guide wire 2. Since the fistula guide core 32 is guided by the guide wire 2, the fistula guide core 32 is accurately positioned, and even if the front end of the fistula guide core 32 is not sharp, it can penetrate the anterior wall of the bladder, and it is not easy to damage the bladder tissue by excessive force during use. In actual use, first, the puncture needle 1 is directly punctured into the bladder, and the puncture needle core 12 is removed; secondly, the guide wire 2 is inserted into the bladder along the puncture sleeve 11, and the curved front end of the guide wire 2 is left in the bladder, and the puncture sleeve 11 is withdrawn while retaining the guide wire 2; again, the fistula tube 3 is inserted into the bladder along the guide wire 2; finally, the fistula guide core 32 is pulled out, leaving the fistula sleeve 31.

[0069] According to some embodiments of the present application, optionally, Figures 5 to 8 As shown, the bladder puncture fistula device also includes a fixing component 4, and the fixing component 4 is installed on the fistula sleeve 31. The fixing component 4 is used to fix the fistula sleeve 31 in the bladder after the fistula guide core 32 is pulled out of the fistula sleeve 31, and the fistula sleeve 31 has a petal shape.

[0070] In this way, the fistula sleeve 31 can be fixed in the bladder under the action of the fixing component 4. Specifically, the fixing component 4 mainly protrudes in a petal shape, thereby fixing the fistula sleeve 31 in the bladder. Optionally, the front end of the fistula sleeve 31 has a petal shape, and the protruding petal shape can be a flexible material to avoid damaging the bladder tissue. In some embodiments, the petal shape can protrude along the first direction a or other circumferential directions.

[0071] According to some embodiments of the present application, optionally, Figures 5 to 8 As shown, the fixing assembly 4 includes a first magnetic member 41 and a second magnetic member 42 . The first magnetic member 41 and the second magnetic member 42 are installed on the fistula sleeve 31 at intervals along the second direction b, and the first magnetic member 41 and the second magnetic member 42 are magnetically connected.

[0072] In this way, according to the magnetic connection between the first magnetic member 41 and the second magnetic member 42, when the fistula guide core 32 is pulled out of the fistula sleeve 31, the fistula guide core 32 cancels the effect on the fistula sleeve 31, and the front end of the fistula sleeve 31 is magnetically attracted to form a petal shape under the action of the magnetic connection, thereby fixing the fistula sleeve 31 in the bladder. When the fistula sleeve 31 needs to be taken out, the fistula guide core 32 is reinserted into the fistula sleeve 31 to straighten the fistula sleeve 31 and cancel the magnetic connection. Optionally, the first magnetic member 41 and the second magnetic member 42 are installed at intervals on the front end of the fistula sleeve 31 along the second direction b, so that the fistula sleeve 31 will not stay in the bladder for too long while facilitating magnetic attraction. The distance between the first magnetic member 41 and the second magnetic member 42 installed at intervals on the fistula sleeve 31 can be determined according to actual usage conditions, so that the petal shape will not be too large to damage the bladder tissue.

[0073] According to some embodiments of the present application, optionally, the first magnetic component 41 and the second magnetic component 42 are both magnets.

[0074] In this way, the first magnetic member 41 and the second magnetic member 42 are both magnets, and the magnetic attraction force is stronger, which facilitates forming a petal shape.

[0075] According to some embodiments of the present application, optionally, the first magnetic member 41 is a magnet, and the second magnetic member 42 is a metal block; or the first magnetic member 41 is a metal block, and the second magnetic member 42 is a magnet.

[0076] In this way, in addition to configuring the first magnetic member 41 and the second magnetic member 42 to be magnets, one of the magnetic members can be configured as a metal block and the other magnetic member can be configured as a magnet to achieve magnetic connection.

[0077] According to some embodiments of the present application, optionally, Figures 5 to 8 As shown, the cystoscopic fistula device includes at least two fixing components 4, wherein the two fixing components 4 are symmetrically arranged.

[0078] In this way, two symmetrically arranged fixing components 4 are provided to ensure that the fistula sleeve 31 on different sides has a fixing component 4, so that the fistula sleeve 31 is better fixed in the bladder.

[0079] According to some embodiments of the present application, optionally, the bladder puncture and fistula device includes four fixing components 4, and the fixing components 4 are symmetrically arranged in pairs.

[0080] In this way, four fixing components 4 are provided and two fixing components 4 are symmetrically arranged, so that the fistula sleeve 31 can be better and more firmly fixed in the bladder. In some embodiments, since the fistula sleeve 31 is cylindrical, theoretically, multiple fixing components 4 can be provided along the circumference of the fistula sleeve 31, and the number of fixing components 4 can be determined according to actual usage.

[0081] According to some embodiments of the present application, optionally, Figure 5 and Figure 6 As shown, the fistula tube 3 also includes a connecting device 33, which includes a connecting head 331 and a docking head 332; the connecting head 331 is installed at the rear end of the fistula guide core 32, and the connecting head 331 has an internal thread 3311. The docking head 332 is installed at the rear end of the fistula sleeve 31, and the docking head 332 is used to lock with the internal thread 3311 of the connecting head 331 to fix the fistula guide core 32 with the fistula sleeve 31.

[0082] In this way, the fistula guide core 32 is fixedly connected to the fistula sleeve 31 through the connecting device 33. Specifically, the fistula sleeve 31 is locked with the internal thread 3311 at the tail end of the fistula guide core 32, so that the head end of the fistula sleeve 31 remains straight, which is convenient for puncturing the bladder. When the fistula tube 3 needs to be connected to a common drainage bag used in daily life, the docking head 332 can be removed.

[0083] According to some embodiments of the present application, optionally, Figures 3 to 6 As shown, the front end of the guide wire 2 is curved into a circle.

[0084] Thus, the front end of the guide wire 2 is curved into a circle, which is more accurately positioned than the conventional J-shaped guide wire 2. When the fistula guide core 32 reaches the front end of the guide wire 2, the friction feel can be significantly increased when it touches the circle, which makes it easier to indicate that the fistula tube 3 has been placed in place.

[0085] According to some embodiments of the present application, optionally, Figure 5 and Figure 6 As shown, the front end of the fistula guide core 32 is conical.

[0086] Thus, the front end of the fistula guide core 32 is conical, which can better expand the bladder wall tissue under the action of the guide wire 2 and is not easy to damage the bladder tissue. Optionally, the front end of the fistula guide core 32 is conical, slightly pointed, and has a hole with a smooth surface, and the hole is used for the guide wire 2 to pass through.

[0087] like Figures 1 to 8 As shown in the figure, the specific operation of the cystoscopic fistula device is as follows: the patient's bladder must be sufficiently filled before the operation, and after routine disinfection and local anesthesia, the fistula point is selected on the pubic bone. Figure 1 and Figure 2 As shown, take the puncture needle 1 and directly puncture the bladder, remove the needle core, and urine can be seen flowing out of the puncture cannula 11 (since it is the puncture needle 1, urine overflow is very small); Figure 3 and Figure 4 As shown, the guide wire 2 is inserted into the bladder along the puncture cannula 11, and the flexible front end is left in the bladder, and the puncture cannula 11 is withdrawn while retaining the guide wire 2; Figure 5As shown, the fistula tube 3 is inserted into the bladder along the guide wire 2. Since the fistula guide core 32 is guided by the guide wire 2, the front end of the fistula guide core 32 does not need to be too sharp. Optionally, the front end of the fistula guide core 32 is set to be conical, which can well expand the bladder wall tissue; Figures 6 to 8 As shown, the connection between the fistula guide core 32 and the fistula sleeve 31 is cancelled, and the fistula guide core 32 is pulled out, and the front end of the fistula sleeve 31 automatically retracts to form a petal shape, thereby inserting the fistula sleeve 31 into the bladder. The whole process is simple to operate, and the bladder can be easily punctured and expanded, and a large amount of urine will not be sprayed during the puncture process to contaminate the patient's clothes or the operating table.

[0088] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A cystoscopic fistula device, characterized in that: include: A puncture needle, the puncture needle comprising a puncture sleeve and a puncture needle core, the puncture needle core can be movably inserted into or pulled out of the puncture sleeve, and the puncture needle core is used for puncturing the bladder; A guide wire, which can be flexibly inserted into or pulled out of the puncture cannula, and the front end of the guide wire is bent, and the front end of the guide wire is used to be inserted into the bladder; The fistula tube comprises a fistula sleeve and a fistula guide core, the fistula guide core can be movably inserted into or pulled out of the fistula sleeve, the fistula tube is used to be sleeved outside the guide wire, and the fistula tube is guided into the bladder through the guide wire.

2. The cystoscopic fistula device according to claim 1, characterized in that: The bladder puncture fistula device also includes a fixing component, which is installed on the fistula sleeve. The fixing component is used to fix the fistula sleeve in the bladder after the fistula guide core is pulled out of the fistula sleeve, and the fistula sleeve has a petal shape.

3. The bladder puncture and fistula device according to claim 2, characterized in that: The fixing assembly comprises a first magnetic component and a second magnetic component. The first magnetic component and the second magnetic component are installed on the fistula sleeve at intervals along a second direction. The first magnetic component and the second magnetic component are magnetically connected.

4. The bladder puncture and fistula device according to claim 3, characterized in that: The first magnetic component and the second magnetic component are both magnets.

5. The cystoscopic fistula device according to claim 3, characterized in that: The first magnetic component is a magnet, and the second magnetic component is a metal block; or the first magnetic component is a metal block, and the second magnetic component is a magnet.

6. The cystoscopic fistula device according to claim 2, characterized in that: The bladder puncture and fistula device comprises at least two fixing components, wherein the two fixing components are symmetrically arranged.

7. The cystoscopic fistula device according to claim 6, characterized in that: The bladder puncture and fistula device comprises four fixing components, and the fixing components are symmetrically arranged in pairs.

8. The cystoscopic fistula device according to claim 1, characterized in that: The fistula tube further comprises a connecting device, which comprises a connecting head and a docking head; The connector is installed at the rear end of the ostomy guide core, the connector has an internal thread, the docking joint is installed at the rear end of the ostomy sleeve, and the docking joint is used to lock with the internal thread of the connector to fix the ostomy guide core and the ostomy sleeve.

9. The cystoscopic fistula device according to claim 1, characterized in that: The front end of the guide wire is curved and circular.

10. The cystoscopic fistula device according to claim 1, characterized in that: The front end of the fistula guide core is conical.

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