Urinary sheath tube and circulating urinary sheath

Abstract

The utility model relates to the technical field of medical instruments, and discloses a urinary sheath tube and a circulating urinary sheath. The urinary sheathing canal specifically comprises a main sheathing canal and an auxiliary sheathing canal, a main sheathing canal frame body is arranged in the main sheathing canal in the extending direction of the main sheathing canal, the main sheathing canal frame body is used for increasing the strength of the main sheathing canal, and the auxiliary sheathing canal is arranged outside the main sheathing canal, arranged side by side with the main sheathing canal and fixedly connected with the main sheathing canal. The circulating urinary sheath comprises the urinary sheath tube provided by the utility model. When the urinary sheath tube and the circulating urinary sheath disclosed by the utility model are applied to the endoscopic surgery of the urology department, the infusion action and the negative pressure access operation can be simultaneously carried out, and liquid does not need to be waited for being flushed in and sucked out in the surgery, so that the process of the surgery is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a urinary sheath tube and a circulating urinary sheath. Background Art

[0002] The urinary sheath is used in urological endoscopic surgery to assist the endoscope and other instruments in entering the urinary tract without creating a surgical channel. In ureteral interventional surgery, the urinary sheath can dilate the ureter before introducing the endoscope and other instruments, and serve as a continuous operation channel. The urinary sheath can protect the ureter during instrument exchange and reduce the possibility of trauma.

[0003] During surgical operations, there is a need to flush fluid into the surgical site to assist in clear vision. Generally, an infusion pump is connected to a channel entrance of the urinary sheath to inject fluid into the body. However, when the fluid accumulates, it will obstruct the field of view of the endoscope. The prior art practice is that when the fluid accumulates, negative pressure is connected to the suction water channel of the urinary sheath to suck out the fluid.

[0004] The drawbacks of this technical solution are:

[0005] The infusion action and the operation of connecting to negative pressure cannot be performed at the same time. During the operation, it is necessary to wait for the liquid to be flushed in and the liquid to be sucked out, which is not conducive to the progress of the operation. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a urinary sheath tube, which has two channels that do not affect each other, so that the infusion action and the operation of connecting to negative pressure can be performed simultaneously, thereby saving operation time.

[0007] According to a urinary sheath proposed by the utility model, in some examples of the utility model, the urinary sheath includes a main sheath and a sub-sheath, a main sheath frame is arranged inside the main sheath along its extension direction, the main sheath frame is used to increase the strength of the main sheath, the sub-sheath is placed outside the main sheath, arranged side by side with the main sheath, and fixedly connected to the main sheath, that is, the urinary sheath has two main sheaths and sub-sheaths that do not affect each other.

[0008] In some examples of the present invention, a secondary sheath frame is also provided inside the secondary sheath along its extension direction, and the secondary sheath frame is used to increase the strength of the secondary sheath.

[0009] In some examples of the present invention, the main sheath frame and the auxiliary sheath frame are integrally formed.

[0010] In some examples of the present invention, the main sheath tube and the auxiliary sheath tube are integrally formed.

[0011] In some examples of the present invention, one end of the main sheath is longer than the secondary sheath, and the portion of the main sheath extending out of the secondary sheath is a passive bending section, so that when the main sheath is extended into an endoscope, the passive bending section can be driven by the endoscope to produce a bending movement.

[0012] In some examples of the present invention, the main sheath frame extends into the passive bending section to prevent the passive bending section from collapsing under the interference of human tissue.

[0013] In some examples of the present invention, the main sheath frame is a cylindrical spring, and the pitch T of the cylindrical spring in the passive bending section is greater than the pitch t of other parts of the cylindrical spring to ensure the bending performance of the passive bending section.

[0014] Another purpose of the present invention is to provide a circulating urinary sheath, which includes the urinary sheath tube mentioned above, so that liquid can be continuously input and output in the urinary sheath tube, that is, a circulation is formed, thereby speeding up the operation process.

[0015] In some examples of the present invention, the circulating urinary sheath also includes a sheath head fixedly connected to one end of the urinary sheath, and a first interface and a second interface are formed on the sheath head, both of which are connected to the main sheath. A third interface is also formed on the sheath head, which is connected to the auxiliary sheath, so that the main sheath and the auxiliary sheath can be used at the same time, so that the infusion action and the negative pressure operation can be carried out at the same time.

[0016] In some examples of the present invention, the circulating urinary sheath further includes an expansion strip that can extend into the main sheath tube through the first interface.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a front view of the circulating urinary sheath in Examples 1 to 4 of the utility model;

[0020] Figure 2 It is a partial cross-sectional view of the urinary sheath tube in Example 1 of the utility model;

[0021] Figure 3 It is a partial cross-sectional view of the urinary sheath tube in Example 2 of the utility model;

[0022] Figure 4 It is a partial cross-sectional view of the urinary sheath tube in Example 3 of the utility model;

[0023] Figure 5 It is a partial cross-sectional view of the urinary sheath in Example 4 of the utility model.

[0024] Description of reference numerals:

[0025] Urinary sheath 10;

[0026] Main sheath tubes 110a, 110b, 110c, 110d;

[0027] Passive bending sections 111a, 111b, 111c, 111d;

[0028] Auxiliary sheath tubes 120a, 120b, 120c, 120d;

[0029] Main sheath tube frames 130a, 130b, 130c, 130d;

[0030] Hard pipe sleeves 140a, 140b;

[0031] Auxiliary sheath tube frames 150b, 130c;

[0032] Sheath head 20;

[0033] First interface 210;

[0034] The second interface 220;

[0035] The third interface 230;

[0036] Expansion strip 30. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the present utility model, it is necessary to understand 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" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] Example 1: This example 1 provides an embodiment of a circulating urinary sheath, as shown below Figure 1-2 This embodiment is described.

[0042] Please refer to the attached Figure 1 The circulating urinary sheath comprises a urinary sheath tube 10 , a sheath tube head 20 and an expansion strip 30 .

[0043] Please refer to the attached Figure 2 The urinary sheath 10 specifically includes a main sheath 110a and an auxiliary sheath 120a arranged side by side, wherein the main sheath 110a and the auxiliary sheath 120a are both slender tubes, and the two are separate structures, and the diameter of the auxiliary sheath 120a is significantly smaller than the diameter of the main sheath 110a. The diameter of the main sheath 110a follows the traditional sheath, and the diameter of the auxiliary sheath 120a is about 1 mm;

[0044] Specifically, the main sheath 110a is made of polytetrafluoroethylene, so that the urinary sheath 10 has a smooth inner surface and is relatively soft. When the endoscope is inserted, it can bend under the action of the endoscope; the auxiliary sheath 120a is a plastic pipe, and the auxiliary sheath 120a is fixed to the outside of the main sheath 110a by heat shrink material.

[0045] Please refer to the attached Figure 2 A main sheath tube frame 130a is provided inside the main sheath tube 110a along its extension direction, wherein the main sheath tube frame 130a is used to increase the strength of the main sheath tube 110a, while increasing the strength of the main sheath tube 110a without affecting its bending performance, so the main sheath tube frame 130a is specifically a cylindrical spring;

[0046] Please continue to refer to the attached Figure 2 The urinary sheath 10 further includes a hard tube sleeve 140a covering the main sheath 110a and the auxiliary sheath 120a. The hard tube sleeve 140a is made of nylon material, so that the portion of the urinary sheath 10 covered with the hard tube sleeve 140a can basically maintain a straight state.

[0047] Please continue to refer to the attached Figure 2 One end of the main sheath 110a is longer than the auxiliary sheath 120a, and the portion of the main sheath 110a extending out of the auxiliary sheath 120a is a passive bending section 111a, so that when the main sheath 110a is inserted into the endoscope, the passive bending section 111a can be driven by the endoscope to generate a bending motion, thereby moving inside the human body;

[0048] Specifically, since the auxiliary sheath 120a is disposed at the side of the main sheath 110a, it will affect the bending performance of the main sheath 110a, causing the bending of the main sheath 110a to be blocked, the part of the main sheath 110a extending out of the auxiliary sheath 120a is designed as a passive bending section 111a.

[0049] Please continue to refer to the attached Figure 2 On the basis of the above-mentioned main sheath 110a and auxiliary sheath 120a, the role of the hard tube sleeve 140a is to ensure the strength of the urinary sheath 10, but it cannot affect the bending performance of the passive bending section 111a. Therefore, the hard tube sleeve 140a stops at the junction of the auxiliary sheath 120a and the passive bending section 111a.

[0050] Please continue to refer to the attached Figure 2 The passive bending section 111a also has the risk of collapse when it is extended into the human body and contacts the tissue. Therefore, the main sheath frame 130a also extends into the passive bending section 111a to support the passive bending section 111a.

[0051] Please continue to refer to the attached Figure 2Similarly, while the main sheath tube frame 130a produces a supporting effect, it cannot affect the bending performance of the passive bending section 111a. Therefore, when the main sheath tube frame 130a is a cylindrical spring, the pitch T of the cylindrical spring in the passive bending section 111a is greater than the pitch t of other parts of the cylindrical spring, that is, the supporting performance of the cylindrical spring in the passive bending section 111a is reduced, giving it greater bending performance.

[0052] Please continue to refer to the attached Figure 1 The sheath head 20 is fixedly connected to the urinary sheath 10, and a first interface 210 and a second interface 220 are formed on the sheath head 20, both of which are connected to the main sheath 110a, and a third interface 230 is also formed on the sheath head 20 to communicate with the auxiliary sheath 120a;

[0053] Specifically, the first interface 210 is coaxial with the main sheath 110a for inserting an endoscope and an expansion strip, the second interface 220 is a Luer cone interface for connecting to an infusion pump, and the third interface 230 is a negative pressure interface for attracting fluid in the abdominal cavity. In this way, the fluid is input into the main sheath 110a and output into the auxiliary sheath 120a, thereby forming a circulation channel to achieve a circulation effect and prevent fluid accumulation from obstructing vision.

[0054] Furthermore, the expansion strip 30 can extend into the main sheath 110 a through the first interface 210 .

[0055] Example 2: This example 2 provides another embodiment of the circulating urinary sheath, as shown below Figure 1 , Figure 3 This embodiment is described.

[0056] Please refer to the attached Figure 1 The circulating urinary sheath also includes a urinary sheath tube 10 , a sheath tube head 20 and an expansion strip 30 .

[0057] The difference between the second embodiment and the first embodiment lies in the structure of the urinary sheath 10 .

[0058] Please refer to the attached Figure 3 In this embodiment 2, the urinary sheath 10 includes: a main sheath 110b and an auxiliary sheath 120b arranged side by side, and a main sheath frame 130b arranged in the main sheath 110b; and a hard tube sleeve 140b wrapped around the main sheath 110b and the auxiliary sheath 120b, and a passive bending section 111b. These structures are the same as the urinary sheath 10 in embodiment 1.

[0059] Please continue to refer to the attached Figure 3In this embodiment 2, the urinary sheath 10 also includes an auxiliary sheath frame 150b arranged inside the auxiliary sheath 120b and along the extension direction of the auxiliary sheath 120b, which is used to increase the strength of the auxiliary sheath 120b and is a cylindrical spring for providing support for the auxiliary sheath 120b to prevent the slender auxiliary sheath 120b from collapsing and blocking.

[0060] Example 3: This example 3 provides another embodiment of the circulating urinary sheath, as shown below Figure 1 , Figure 4 This embodiment is described.

[0061] Please refer to the attached Figure 1 The circulating urinary sheath also includes a urinary sheath tube 10 , a sheath tube head 20 and an expansion strip 30 .

[0062] The difference between the third embodiment and the first embodiment lies in the structure of the urinary sheath 10 .

[0063] Please refer to the attached Figure 4 In this embodiment 3, the urinary sheath 10 includes: a main sheath 110c and an auxiliary sheath 120c arranged side by side, a main sheath frame 130c arranged in the main sheath 110c and an auxiliary sheath frame 150c arranged in the auxiliary sheath 120c, and a passive bending section 111c.

[0064] Please continue to refer to the attached Figure 4 One difference between this embodiment 3 and embodiment 1 is that the main sheath tube 110c and the auxiliary sheath tube 120c are integrally formed, and the main sheath tube frame 130c and the auxiliary sheath tube frame 150c are also integrally formed, and the sheath tubes 110c and 120c are extruded by an extruder while weaving the frames 130c and 150; that is, during the molding process of the urinary sheath tube 10, an 8-shaped spring is formed while a sheath tube is formed at the edge of the 8-shaped spring, until reaching the passive bending section 111c, only a cylindrical spring is formed, and the sheath tube at the passive bending section 111c is continuously extruded.

[0065] Another difference between the present embodiment 3 and the embodiment 1 is that the wall thickness of the main sheath tube 110c at the passive bending section 111c is smaller than the wall thickness at other parts, so that the main sheath tube 110c can maintain its hardness without affecting the bending performance of the passive bending section 111c.

[0066] Example 4: This example 4 provides another embodiment of the circulating urinary sheath, as shown below Figure 1 , Figure 5 This embodiment is described.

[0067] Please refer to the attached Figure 1 The circulating urinary sheath also includes a urinary sheath tube 10 , a sheath tube head 20 and an expansion strip 30 .

[0068] The difference between the fourth embodiment and the first embodiment lies in the structure of the urinary sheath 10 .

[0069] Please refer to the attached Figure 5 In this embodiment 4, the urinary sheath 10 includes: a main sheath 110d and an auxiliary sheath 120d arranged side by side, a main sheath frame 130d arranged in the main sheath 110d, and a passive bending section 111d.

[0070] Please continue to refer to the attached Figure 5 One difference between the fourth embodiment and the first embodiment is that the main sheath tube 110d and the auxiliary sheath tube 120d are integrally formed, that is, they are extruded simultaneously by an extruder.

[0071] Another difference between the present embodiment 4 and the embodiment 1 is that the wall thickness of the main sheath tube 110d at the passive bending section 111d is smaller than the wall thickness at other parts, so that the main sheath tube 110d can maintain its hardness without affecting the bending performance of the passive bending section 111d.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A urinary sheath, characterized in that: The invention comprises a main sheath tube and an auxiliary sheath tube. A main sheath tube frame is arranged inside the main sheath tube along its extension direction. The main sheath tube frame is used to increase the strength of the main sheath tube. The auxiliary sheath tube is arranged outside the main sheath tube, arranged side by side with the main sheath tube, and fixedly connected with the main sheath tube.

2. The urinary sheath according to claim 1, characterized in that: An auxiliary sheath tube frame is also arranged inside the auxiliary sheath tube along its extending direction.

3. The urinary sheath according to claim 2, characterized in that: The main sheath tube frame and the auxiliary sheath tube frame are integrally formed.

4. The urinary sheath according to claim 1, characterized in that: The main sheath tube and the auxiliary sheath tube are integrally formed.

5. The urinary sheath according to any one of claims 1 to 4, characterized in that: One end of the main sheath is longer than the auxiliary sheath, and the portion of the main sheath extending beyond the auxiliary sheath is a passive bending section, so that when the main sheath is inserted into an endoscope, the passive bending section can be driven by the endoscope to generate a bending motion.

6. The urinary sheath according to claim 5, characterized in that: The main sheath frame extends into the passive bending section.

7. The urinary sheath according to claim 6, characterized in that: The main sheath tube frame is a cylindrical spring, and the pitch T of the cylindrical spring in the passive bending section is greater than the pitch t of other parts of the cylindrical spring.

8. A circulating urinary sheath, characterized in that: The invention comprises the urinary sheath according to any one of claims 1 to 7.

9. The circulating urinary sheath according to claim 8, characterized in that: It comprises a sheath head fixedly connected to one end of the urinary sheath, the sheath head is formed with a first interface and a second interface both connected to the main sheath, and the sheath head is also formed with a third interface connected to the auxiliary sheath.

10. The circulating urinary sheath according to claim 9, characterized in that: It also includes an expansion strip that can be extended into the main sheath through the first interface.

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