Sterile ureter guiding sheath structure

Abstract

The utility model discloses a sterile ureter guiding sheath structure, which belongs to the technical field of medical instruments and comprises an expansion tube, an outer sheath tube is mounted on the outer side of the expansion tube, an outer sheath tube seat is in threaded connection with the end of one side of the outer sheath tube, an inclined tube is arranged on the outer side of the outer sheath tube seat in a penetrating manner, and a push piece is mounted on the outer wall of the inclined tube. A first rotating connector is installed in the inclined tube, one end of the first rotating connector is in bearing connection with a cross shaft, the cross shaft is in bearing connection with a second rotating connector, a screwing gland is installed on the outer sheath tube base, an expansion tube center base is installed on one side of the screwing gland, and a sealing cap is installed in the outer sheath tube base. By means of the ureter guiding sheath, the problems that an existing ureter guiding sheath is low in flexibility, and clinical operation of doctors is not convenient are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a sterile ureter guide sheath structure. BACKGROUND

[0002] With the continuous promotion of minimally invasive surgery technology, more and more urinary system disease treatments begin to use ureter guide sheaths to assist. This medical tool not only can reduce the trauma of surgery on patients, improve the safety and success rate of surgery, but also can shorten the recovery time of patients after surgery, and provide more accurate operation conditions for doctors.

[0003] The ureter guide sheath structure currently used can usually better establish a working channel to provide a stable access path for endoscopes and other small surgical instruments. However, the inclined pipe of most ureter guide sheaths is fixedly installed, and the doctor cannot adjust the angle of the instrument to achieve the best operating position according to the actual situation. The fixed angle of the inclined pipe of the ureter guide sheath cannot be adjusted, which limits the operation space of the doctor and reduces the flexibility of the surgery. This phenomenon has become a problem that personnel in the field urgently need to solve. SUMMARY

[0004] The utility model aims at the prior art device sterile ureter guide sheath structure to solve the problem in the background art.

[0005] In order to solve the above technical problems, the utility model provides the following technical scheme: a sterile ureter guide sheath structure, which comprises a dilating tube, an outer sheath tube is installed on the outer side of the dilating tube, an outer sheath tube seat is threadedly connected to one side end of the outer sheath tube, and an inclined pipe is arranged on the outer side of the outer sheath tube seat.

[0006] A push piece is installed on the outer wall of the inclined pipe, a first rotary joint is installed in the inclined pipe, a cross shaft is connected to one end of the first rotary joint through a bearing, and a second rotary joint is connected to the cross shaft through a bearing.

[0007] The utility model further illustrates that the outer sheath tube comprises a polytetrafluoroethylene inner layer, an intermediate layer is arranged around the outer side of the polytetrafluoroethylene inner layer, and an outer coating is arranged around the outer side of the intermediate layer.

[0008] The utility model further illustrates that a sealing gasket is installed at the connection between the outer sheath tube seat and the inclined pipe, and the inclined pipe is connected to the outer sheath tube seat through the first rotary joint.

[0009] The utility model further illustrates that a connecting pipe is welded at the pipe opening of the inclined pipe, and one end of the connecting pipe is connected to the sealing gasket.

[0010] The utility model further illustrates that the second rotary joint is riveted with the inner wall of the outer sheath seat.

[0011] The utility model further illustrates that a screwing gland is installed on the outer sheath seat, and one side of the screwing gland is provided with a dilating tube center seat.

[0012] The utility model further illustrates that a sealing cap is installed inside the outer sheath seat, and the sealing cap is installed around the outside of the dilating tube.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] (1) by setting adjustable angle's inclined pipe, compared with some fixed inclined pipe angle is more suitable for different patients, especially some patients with complex or abnormal anatomical structure, thereby reducing the operation difficulty, reducing the influence to the operation effect;

[0015] (2) by setting multilayer outer sheath pipe, compared with traditional single layer outer sheath pipe, it is more corrosion resistant, and the mechanical strength is higher, and the wear resistance and biocompatibility are better;

[0016] (3) by setting up inclined pipe and being provided with push piece, can be used for draining liquid to flow out, can also be connected with negative pressure suction device and used, simultaneously has the effect of protecting endoscope and ureter. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0018] Figure 1 It is the overall structure schematic diagram of the utility model;

[0019] Figure 2 It is the outer sheath pipe structure schematic diagram of the utility model;

[0020] Figure 3 It is the structure schematic diagram of the side of the utility model;

[0021] Figure 4 It is the section view of the outer sheath seat part of the utility model;

[0022] In the drawing: 1, dilating tube;2, outer sheath pipe;21, polytetrafluoroethylene inner layer;22, intermediate layer;23, outer coating;3, outer sheath seat;31, sealing pad;4, inclined pipe;41, connecting pipe;5, push piece;6, first rotary joint;7, cross shaft;8, second rotary joint;9, screwing gland;10, dilating tube center seat;11, sealing cap. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be further described in detail below in conjunction with the preferred embodiments and the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1-4 The utility model provides technical scheme: a sterile ureter guide sheath structure, including expansion pipe 1, the outside of expansion pipe 1 is equipped with outer sheath pipe 2, and the one side end of expansion pipe 1 is conical end, can along the guide wire and insert outer sheath pipe 2 into the specified position, and the other side end of outer sheath pipe 2 is screw thread connection with outer sheath pipe seat 3, and the outside of outer sheath pipe seat 3 is equipped with inclined pipe 4, can be used for draining liquid to flow out, and the outer wall of inclined pipe 4 is equipped with push piece 5, is used for adjusting negative pressure;

[0025] Reference Figure 2 Outer sheath pipe 2 includes polytetrafluoroethylene inner layer 21, and the outside of polytetrafluoroethylene inner layer 21 is surrounded with middle layer 22, and the outside of middle layer 22 is surrounded with outside coating 23, and outer sheath pipe 2 adopts three-layer structure design to guarantee the mechanical property of ureter guide sheath, and also consider biocompatibility and convenient use, and outside coating 23 is hydrophilic coating, has good lubricity, can reduce frictional resistance in the process of guide sheath entering and exiting.

[0026] Reference Figure 3 The connecting place of outer sheath pipe seat 3 and inclined pipe 4 is equipped with sealing gasket 31 outside circle;

[0027] Reference Figure 4 The inside of inclined pipe 4 is equipped with first rotary joint 6, and the one end bearing of first rotary joint 6 is connected with cross shaft 7, and the bearing of cross shaft 7 is connected with second rotary joint 8, and the pipe orifice of inclined pipe 4 is welded with connecting pipe 41, and one end of connecting pipe 41 is connected with sealing gasket 31;

[0028] Inclined pipe 4 is connected with outer sheath pipe seat 3 through first rotary joint 6, and sealing gasket 31 is made of material with high elasticity and good compression recovery performance, so as to adapt to the angle change of inclined pipe 4 within a certain range, and good sealing effect is maintained at the same time.

[0029] Connecting pipe 41 is used to realize the connection between inclined pipe 4 and sealing gasket 31, and connecting pipe 41 is made of pipe with high elasticity and plasticity, and through the close connection, sealing gasket 31 can ensure the sealing property of ureter guide sheath.

[0030] The second rotary joint 8 is riveted to the inner wall of the outer sheath seat 3, so that the angle tube 4 is positioned and movably connected with the outer sheath seat 3 through the second rotary joint 8, the cross shaft 7 and the first rotary joint 6, thereby realizing the angle adjustment of the angle tube 4.

[0031] Further, referring to Figures 3-4 The outer sheath seat 3 is provided with a screwing gland 9, and the screwing gland 9 is provided with a dilating tube center seat 10 on one side, and the connection between the dilating tube center seat 10 and the outer sheath seat 3 is realized through the screwing gland 9.

[0032] The inner part of the outer sheath seat 3 is provided with a sealing cap 11, and the sealing cap 11 is installed around the outer side of the dilating tube 1, so as to prevent the overflow of the flushing liquid or urine, ensure the clear surgical field, and reduce the interference to the surrounding tissues.

[0033] In the embodiment, the guide sheath is taken out from the sterile package, the guide wire is placed into the ureter under the perspective, reaches the predetermined position, the dilating tube center seat 10 is locked to the outer sheath seat 3, the outer sheath tube 2 is pushed along the guide wire and enters the ureter. After confirming that the outer sheath tube 2 has been determined to be in place through the perspective, the outer sheath tube 2 is fixed in place, the dilating tube center seat 10 is loosened, the dilating tube 1 is pulled out, and the channel establishment is completed.

[0034] During the operation, the angle tube 4 of the outer sheath seat 3 can be used for draining liquid, or the negative pressure suction device is connected and used in cooperation with the push piece 5. The required endoscope and other surgical instruments can be introduced through the outer sheath tube 2. When the liquid is led out through the angle tube 4, there is a certain difference in the body structure of different patients, at this time, the doctor needs to manually move the angle tube 4, and the angle between the angle tube 4 and the outer sheath tube 2 can be adjusted, so as to help the doctor to flexibly adjust according to the actual needs during the operation, and help to improve the operation efficiency and quality.

[0035] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the utility model, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0036] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them. Although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced equivalently, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A sterile ureteral guide sheath structure comprising a dilating tube (1), characterized in that: The outer side of the expansion tube (1) is provided with an outer sheath tube (2), one end of the outer sheath tube (2) is provided with an outer sheath tube seat (3) through threaded connection, the outer side of the outer sheath tube seat (3) is provided with an inclined tube (4); The outer wall of the inclined tube (4) is provided with a push piece (5), the inner side of the inclined tube (4) is provided with a first rotary joint (6), one end of the first rotary joint (6) is provided with a cross shaft (7) through bearing connection, the cross shaft (7) is provided with a second rotary joint (8) through bearing connection.

2. A sterile ureteral guide sheath structure according to claim 1, wherein: The outer sheath tube (2) comprises a polytetrafluoroethylene inner layer (21), the outer side of the polytetrafluoroethylene inner layer (21) is provided with an intermediate layer (22) through surrounding arrangement, the outer side of the intermediate layer (22) is provided with an outer coating (23) through surrounding arrangement.

3. A sterile ureteral guide sheath structure according to claim 2, wherein: The connecting part of the outer sheath tube seat (3) and the inclined tube (4) is provided with a sealing gasket (31), the inclined tube (4) is connected with the outer sheath tube seat (3) through the first rotary joint (6).

4. A sterile ureteral guide sheath structure according to Claim 3, wherein: The tube opening of the inclined tube (4) is welded with a connecting tube (41), one end of the connecting tube (41) is connected with the sealing gasket (31) through abutting.

5. A sterile ureteral guide sheath structure according to Claim 1, wherein: The second rotary joint (8) is riveted with the inner wall of the outer sheath tube seat (3).

6. A sterile ureteral guide sheath structure according to Claim 1, wherein: The outer sheath tube seat (3) is provided with a screwing gland (9), one side of the screwing gland (9) is provided with an expansion tube center seat (10).

7. A sterile ureteral guide sheath structure according to Claim 1, wherein: The inner side of the outer sheath tube seat (3) is provided with a sealing cap (11), and the sealing cap (11) is arranged around the outer side of the expansion tube (1).

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