Guide sheath device

Abstract

The utility model discloses a guide sheath device which is characterized by comprising a guide sheath, the guide sheath comprises a sheath tube seat, a hollow guide section and a negative pressure section, the head end of the guide section is a soft section, the middle end and the tail end of the guide section are hard sections, the tail end of the guide section is communicated with the sheath tube seat, and the negative pressure section is obliquely communicated with a negative pressure channel in the sheath tube seat; and the expansion tube is arranged in the guide section. According to the arrangement, one end of the guide section is the soft section, and the other end and the middle section of the guide section are the hard sections, so that the head of the expansion tube can be smoothly bent without breakage while the expansion tube smoothly enters through the guide sheath, the expansion tube can enter a curved natural channel of a human body more easily, and the head of the expansion tube can protect a steel wire from being broken when an endoscope is operated; the negative pressure section can be connected to a negative pressure device through a silicone tube to collect calculi and normal saline for flushing, the operation space is increased, and the infection risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of urinary stone removal, in particular to a guide sheath device. Background Art

[0002] The product is used in urological surgery. It is inserted into the human body through natural channels and a surgical channel is established to assist the endoscope and other instruments to enter the urinary cavity, providing them with a continuous operating channel. It can protect the urethra when the instruments are repeatedly exchanged, reduce trauma to it, and protect precision instruments and soft endoscopes from damage.

[0003] The existing ureteral guide sheaths on the market are not bendable at the head end and do not have negative pressure. During surgery, the endoscope must be extended a certain distance from the guide sheath to ensure that the endoscope head end can be adjusted. If the doctor makes an error in operation and bends the endoscope without extending the guide sheath, the internal steel wire of the endoscope will break or fall off, causing the endoscope to fail and the product to be scrapped. When endoscopic lithotripsy is used, the distance between the endoscope head end and the guide sheath head end makes it more difficult for the guide sheath to absorb and discharge stones. The tail end of the guide sheath without negative pressure is open and straight, with a bucket underneath to flush saline and stones, making surgery inconvenient for doctors, and water and stones splashing all over the floor, which also increases the risk of infection for doctors. Utility Model Content

[0004] The utility model provides a guide sheath device, aiming to at least solve one of the technical problems existing in the prior art.

[0005] The technical solution of the utility model relates to a guide sheath device, comprising:

[0006] A guide sheath, comprising a sheath tube seat, a hollow guide section and a negative pressure section, wherein the head end of the guide section is a soft section, the middle end and the tail end of the guide section are configured as hard sections, the tail end of the guide section is connected to the sheath tube seat, and the negative pressure section is obliquely connected to a negative pressure channel in the sheath tube seat;

[0007] The expansion tube is arranged in the guiding section.

[0008] According to some embodiments of the present utility model, the guide section is a wire-wound component, the head end is a thin wire, the tail end is a thick wire, and the middle end is a gradual transition section between the thick wire and the thin wire.

[0009] According to some embodiments of the present invention, the end of the expansion tube is configured as a flexible section.

[0010] According to some embodiments of the utility model, the expansion tube is connected to the expander center seat, and the expander center seat is provided with an undercut for connecting to the sheath tube seat.

[0011] According to some embodiments of the utility model, a groove connected to the undercut is provided on the sheath tube seat.

[0012] According to some embodiments of the utility model, a sealing cover is provided on the sheath tube seat.

[0013] According to some embodiments of the present invention, the inclination angle of the negative pressure section is set to 40° to 50°.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. By setting one end of the guide section as a soft section and the other end and the middle section as a hard section, it is ensured that the dilatation tube can enter smoothly through the guide sheath while its head can bend smoothly without breaking, making it easier to enter the tortuous natural channels of the human body. Its head can also protect the steel wire from being broken during endoscope operation. The negative pressure section can be connected to the negative pressure device through a silicone tube to collect stones and saline for flushing, which increases the surgical operation space and reduces the risk of infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a guide sheath device according to an embodiment of the utility model;

[0017] Figure 2 It is a schematic structural diagram of the guide sheath of an embodiment of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the expansion tube of an embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of the guide section of an embodiment of the utility model.

[0020] Figure Number:

[0021] A guide sheath 100, a sheath tube seat 110, a groove 111, a sealing cover 112, a guide section 120, and a negative pressure section 130;

[0022] Expansion tube 200 , expander center seat 210 , undercut 211 . DETAILED DESCRIPTION

[0023] The following content will describe several embodiments of the present utility model, including embodiments corresponding to the drawings. It can be understood that the drawings are used to assist in understanding the technical features and technical solutions of the present utility model, and should not be understood as limiting the scope of protection of the present utility model.

[0024] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, scheme and effect of the utility model. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0025] It should be noted that, unless otherwise clearly defined, when a feature is referred to as "fixed", "connected", "installed" or "set on" another feature, it can be directly "fixed", "connected", "installed" or "set on" another feature, or it can be indirectly "fixed", "connected", "installed" or "set on" another feature. The words "fixed", "connected", "installed" or "set on" should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above words in this utility model in combination with the specific content of the technical solution.

[0026] It should be noted that the descriptions of the directions or positional relationships indicated by up, down, left, right, top, bottom, front, back, inside, and outside used in the present invention are based on the directions or positional relationships in the drawings or embodiments and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] It should be noted that the term "and / or" used in the present utility model includes any combination of one or more related listed items, "above", "below", "within", etc. are understood to include the number itself.

[0028] It should be noted that the description of first and second in the utility model is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] It should be noted that, unless otherwise clearly defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments, not for limiting the present invention.

[0030] Reference Figures 1 to 4 The technical solution of the utility model relates to a guide sheath device, including: a guide sheath 100, including a sheath tube seat 110, a hollow guide section 120 and a negative pressure section 130, the head end of the guide section 120 is set as a soft section, the tail end and the middle end of the guide section 120 are set as a hard section, the tail end of the guide section 120 is connected to the sheath tube seat 110, and the negative pressure section 130 is obliquely connected to the negative pressure channel in the sheath tube seat 110; an expansion tube 200 is arranged in the guide section 120.

[0031] The application of the above-mentioned guide sheath device has at least the following beneficial effects: by setting one end of the guide section 120 as a soft section and the middle and tail ends as hard sections, it is ensured that the dilation tube 200 can enter smoothly through the guide sheath 100, and its head can also bend smoothly without breaking, and it is easier to enter the tortuous natural passages of the human body. Its head can also protect the steel wire from being broken during endoscope operation. The negative pressure section 130 can be connected to the negative pressure device by connecting a silicone tube to collect stones and saline for flushing, thereby increasing the surgical operation space and reducing the risk of infection.

[0032] According to some embodiments of the present invention, referring to Figures 1 to 4 The guide section 120 is a wire-wound component, with a thin wire at the head end, a thick wire at the tail end, and a gradient section of the thick wire and the thin wire at the middle end. That is, the guide section 120 is formed by weaving wires of different thicknesses, and a gradient section transition is provided in between, so that different parts of the guide section 120 have different hardness and bending abilities. The soft section has better bending ability and is not prone to breakage.

[0033] According to some embodiments of the present invention, the end of the expansion tube 200 is configured as a flexible section. The end of the expansion tube 200 is configured as a flexible section so that the expansion tube 200 can reach the treatment site more accurately during the process of being inserted for treatment.

[0034] According to some embodiments of the present invention, referring to Figures 1 to 4 The expansion tube 200 is connected to the expander center seat 210, and the expander center seat 210 is provided with a buckle 211 for connecting to the sheath tube seat 110. The sheath tube seat 110 is provided with a groove 111 connected to the buckle 211. The expansion tube 200 is connected to the guide sheath 100 through the cooperation of the buckle 211 and the groove 111 to prevent the expansion tube 200 from falling off.

[0035] According to some embodiments of the present invention, referring to Figures 1 to 4 A sealing cover 112 is provided on the sheath tube seat 110 for providing a negative pressure environment inside the guide sheath 100 .

[0036] According to some embodiments of the present invention, referring to Figures 1 to 4 The inclination angle of the negative pressure section 130 is set to 40° to 50°, preferably 45°.

[0037] It should be noted that in this specification, terms such as "one embodiment", "some embodiments", "basic embodiment", "extended embodiment" etc. may be used to describe several embodiments of the utility model. The specific features, structures, materials or characteristics in the several embodiments may be combined in accordance with the principles and purposes of the utility model.

[0038] Although some embodiments of the utility model have been shown and described in this specification, the utility model should not be limited to the above-mentioned embodiments. As long as the technical effects of the utility model are achieved by the same or equivalent means, any changes, modifications, equivalent substitutions and equivalent variations of these embodiments within the spirit and principles of the present disclosure and without departing from the principles and purpose of the present utility model should be included in the scope of protection of the present disclosure and should be deemed to belong to the scope of protection of the utility model.

Claims

1. A guide sheath device, characterized in that: include: A guide sheath, comprising a sheath tube seat, a hollow guide section and a negative pressure section, wherein the head end of the guide section is a soft section, the middle end and the tail end of the guide section are configured as hard sections, the tail end of the guide section is connected to the sheath tube seat, and the negative pressure section is obliquely connected to a negative pressure channel in the sheath tube seat; The expansion tube is arranged in the guiding section.

2. The guide sheath device according to claim 1, characterized in that: The guide section is a wire-wound component, the head end is a thin wire, the tail end is a thick wire, and the middle end is a gradual transition section between the thick wire and the thin wire.

3. The guide sheath device according to claim 1, characterized in that: The end of the expansion tube is configured as a flexible section.

4. The guide sheath device according to claim 3, characterized in that: The expansion tube is connected to the expander center seat, and the expander center seat is provided with an undercut for connecting to the sheath tube seat.

5. The guide sheath device according to claim 4, characterized in that: The sheath tube seat is provided with a groove connected to the undercut.

6. The guide sheath device according to claim 1, characterized in that: A sealing cover is arranged on the sheath tube seat.

7. The guide sheath device according to claim 1, characterized in that: The inclination angle of the negative pressure section is set to 40° to 50°.

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