Installation guide structure of ureter guide sheath

Abstract

The utility model relates to the technical field of medical instruments, in particular to an installation guiding structure of a ureter guiding sheath, the guiding sheath comprises a sheath base, a sheath tube and a branch tube, the bottom of the sheath base is provided with an opening, the installation guiding structure comprises a guiding block, the guiding block is connected into the sheath base in a sliding mode from the bottom of the sheath base, and the guiding block is provided with an arc-shaped guiding face. A guide groove is formed in the guide face, the width of the guide groove is larger than the diameter of the water conveying hose, the axial extension line of the sheathing canal penetrates through the guide groove, and a notch in the end, close to the branch pipe, of the guide groove is in butt joint with the branch pipe. After the guide block is connected into the sheath base in a sliding mode, the water conveying hose can be smoothly guided into the branch pipe, the water conveying hose can be conveniently installed after the guide sheath is installed, meanwhile, the process is simple and convenient, and the installation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a kind of installation guide structure of ureteral guide sheath. BACKGROUND

[0002] In existing clinic, the treatment of ureteral calculus usually uses ureteral guide sheath to establish surgical channel, ureteral guide sheath is inserted through urethral orifice, is placed tube through bladder, ureter path, establishes the working channel of surgery, to facilitate surgery. Ureteral guide sheath generally includes sheath core, sheath seat and sheath tube, during surgery, in order to clear visual field obstacle, reduce the heat damage generated in laser lithotripsy, and when necessary, need to inject a large amount of physiological saline to surgical site, therefore need to install water delivery hose for conveying physiological saline in sheath tube. Water delivery hose is generally from the branch pipe connected with sheath seat for connecting physiological saline input pipe and sealed fixed in branch pipe, branch pipe connects the equipment for conveying physiological saline, and branch pipe and sheath tube are not often on the same axis, and the inner diameter of pipeline for fixing branch pipe on branch pipe is often only slightly larger than the outer diameter of water delivery hose so as to seal, as shown in FIG. Figure 2 Therefore, when installing water delivery hose after installing guide sheath, it is difficult to guide water delivery hose from sheath tube to branch pipe;In addition, if water delivery hose is installed into sheath tube first, then water delivery hose and sheath tube are installed into sheath seat, water delivery hose needs to be guided into branch pipe in the process, and the operation is very cumbersome, and the installation efficiency is low. UTILITY MODEL CONTENT

[0003] The utility model aims at solving the problems of existing ureteral guide sheath installation water delivery hose operation cumbersome, low efficiency, and provides an installation guide structure convenient for ureteral guide sheath installation.

[0004] The technical scheme provided by the utility model is as follows: an installation guide structure of ureteral guide sheath, the guide sheath includes internally hollow sheath seat, and sheath tube and branch pipe communicated with the inside of the sheath seat, the bottom of the sheath seat is open, the installation guide structure includes guide block, the guide block is detachably slid into the sheath seat from the bottom of the sheath seat, the inside of the sheath tube is provided with the abutting face of the abutting face of the sheath seat top and the arc guide surface of the guide block, the center of the arc of the guide surface is away from the guide block, the guide surface is provided with guide groove along the circumference of its arc, the groove width of the guide groove is greater than the diameter of water delivery hose, the axial extension line of the sheath tube passes through the guide groove, and the slot of the guide groove is connected with branch pipe.

[0005] In use, the guide block is installed into the sheath seat from the bottom of the sheath seat until the abutting surface abuts the top of the sheath seat, at which time the notch of the guide groove near one end of the branch pipe is in abutment with the branch pipe, so that when the water delivery hose is pushed out of the sheath pipe, the head of the water delivery hose abuts the guide surface and slides into the guide groove, slides along the guide groove into the branch pipe to complete installation, and finally the guide block is pulled out of the sheath seat.

[0006] After the guide block is slid into the interior of the sheath seat, the water delivery hose can be smoothly guided into the branch pipe, facilitating the installation of the water delivery hose after the installation of the guide sheath is completed, simplifying the process and improving installation efficiency.

[0007] Preferably, the bottom surface of the guide groove is tangent to the pipe wall of the branch pipe away from the sheath pipe, so that the water delivery hose slides more smoothly from the bottom surface of the guide groove to the branch pipe.

[0008] Preferably, first and second guide plates are further included, the first and second guide plates are connected to the inner wall of the sheath seat, and a space for the water delivery hose to pass through during entry of the water delivery hose from the sheath pipe into the branch pipe is formed between the first and second guide plates. The first and second guide plates further limit the water delivery hose.

[0009] Preferably, the inner sides of the first and second guide plates are parallel to each other and parallel to the axis of the sheath pipe.

[0010] Preferably, the inner sides of the first and second guide plates are parallel to the axis of the sheath pipe, the inner sides of the first and second guide plates form a horn shape, and the horn mouth faces the guide surface. The horn shape facilitates guiding the water delivery hose into the guide groove.

[0011] Preferably, the first and second guide plates are both in abutment with the guide surface and serve as limiting structures when the guide block is slid in.

[0012] Preferably, the guide surface of the guide block is recessed to form two grooves, the two grooves are respectively located on both sides of the guide groove to avoid the first and second guide plates, the first and second guide plates are both in abutment with the wall surface of the grooves, a guide piece is formed between the two grooves, and the guide piece is in contact with the first and second guide plates on both sides. The channel formed by the first and second guide plates cooperates with the guide piece to form a slide when the guide block is installed, and limits the installation of the guide block.

[0013] As preferred, the wall surface of the groove abutting against the first guide plate or the second guide plate is an arc surface, and the outer side surface profile of the first guide plate and the second guide plate is matched with the wall surface of the groove. By abutting against the arc surface, the contact in the sliding process of the guide block is avoided, and the abrasion of the outer side surface of the first guide plate and the second guide plate and the wall surface of the groove is reduced.

[0014] As preferred, a convex circular table is arranged at one end of the guide block away from the sheath, and the circular table is exposed outside the sheath seat. The circular table facilitates pulling out the guide block after installation.

[0015] As preferred, a guide slope is further arranged on the inner wall of the sheath seat and located between the first guide plate and the second guide plate, and the guide slope is oppositely formed with the guide surface to form a horn mouth shape. The guide slope prevents the head of the water delivery hose from being upturned when the water delivery hose slides.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] After the guide block is slid into the inside of the sheath seat, the water delivery hose can be smoothly guided into the branch pipe, the water delivery hose is conveniently installed at the same time when the guide sheath is installed, the process is simple, and the installation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the embodiment one of the utility model;

[0019] Figure 2 It is a bottom view of the embodiment one of the utility model;

[0020] Figure 3 It is Figure 2 It is a sectional view of A-A;

[0021] Figure 4 It is Figure 3 It is a sectional view of B-B;

[0022] Figure 5 It is a top view of the embodiment one of the utility model when the guide block 2 is not installed;

[0023] Figure 6 It is a sectional view of A-A when the guide block 2 is not installed in the embodiment one of the utility model;

[0024] Figure 7 It is a perspective view of the guide block 2 of the embodiment one of the utility model;

[0025] Figure 8 It is a sectional view of B-B of the embodiment two of the utility model;

[0026] Figure 9 This is a cross-sectional view of point AA in Embodiment 3 of this utility model when the guide block 2 is not installed;

[0027] Figure 10 This is a three-dimensional schematic diagram of the guide block 2 in Embodiment 3 of this utility model.

[0028] Explanation of reference numerals in the attached drawings: guide sheath 1, sheath seat 11, sheath tube 12, branch tube 13, first guide plate 14, second guide plate 15, guide slope 16, guide block 2, guide surface 21, contact surface 22, guide groove 23, guide plate 24, frustum 25, groove 26, water delivery hose 3. Detailed Implementation

[0029] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0030] For ease of description, when the sheath tube 12 is placed vertically, the direction of the sheath seat 11 relative to the sheath tube 12 is downward.

[0031] Example 1, as Figures 1-9 As shown, an installation guide structure for a ureteral guide sheath is provided. The guide sheath 1 includes a hollow sheath seat 11, a sheath tube 12 and a branch tube 13 communicating with the interior of the sheath seat 11. The bottom of the sheath seat 11 is open. The installation guide structure includes:

[0032] Guide block 2 is detachably slidably inserted into sheath seat 11 from the bottom of sheath seat 11. Guide block 2 has an abutting surface 22 that abuts against the top of sheath seat 11 and an arc-shaped guide surface 21 on the inner side of sheath tube 12. The center of the arc of guide surface 21 is away from guide block 2. Guide surface 21 has a guide groove 23 along its arc circumference. The groove width of guide groove 23 is larger than the diameter of water supply hose 3. The axial extension line of sheath tube 12 passes through guide groove 23. The groove opening of guide groove 23 near branch pipe 3 is connected to branch pipe 3.

[0033] A first guide plate 14 and a second guide plate 15 are connected to the inner wall of the sheath seat 11, forming a space between them for the water delivery hose 3 to pass through during its entry from the sheath tube 12 into the branch tube 3. The first guide plate 14 and the second guide plate 15 further limit the movement of the water delivery hose.

[0034] A guide slope 16 is disposed on the inner wall of the sheath seat 11 and located between the first guide plate 14 and the second guide plate 15. The guide slope 16 and the guide surface 21 form a funnel shape. The guide slope 16 prevents the head of the water delivery hose 3 from tilting upwards when it slides.

[0035] The end of the guide block 2 away from the sheath 12 is provided with a convex circular table 25, which is exposed outside the sheath seat 11. The circular table 25 facilitates the pulling out of the guide block 2 after installation.

[0036] The first guide plate 14 and the second guide plate 15 are both abutted on the guide surface 21, and together with the abutted surface 22, they serve as a limiting structure when the guide block 2 slides.

[0037] In use, the guide block 2 is installed into the sheath seat 11 from the bottom of the sheath seat 11 until the abutted surface 22 is abutted on the top of the sheath seat 11 and the first guide plate 14 and the second guide plate 15 are both abutted on the guide surface 21. At this time, the notch of the guide groove 23 close to one end of the branch pipe 3 is in abutment with the branch pipe 3. Therefore, when the water delivery hose 3 is pushed out of the sheath 12, the head of the water delivery hose 3 is abutted on the guide surface 21 and then slides into the guide groove 23, and slides along the guide groove 23 into the branch pipe 3 to complete the installation. Finally, the guide block 2 is pulled out of the sheath seat 11.

[0038] After the guide block 2 is slid into the sheath seat 11, the water delivery hose 3 can be smoothly guided into the branch pipe 3, which facilitates the installation of the water delivery hose 3 after the installation of the guide sheath is completed, simplifies the process, and improves the installation efficiency.

[0039] The bottom surface of the guide groove 23 is tangent to the wall of the branch pipe 13 away from the sheath 12, which makes the water delivery hose 3 slide from the bottom surface of the guide groove 23 to the branch pipe 13 more smoothly.

[0040] The inner planes of the first guide plate 14 and the second guide plate 15 are parallel to each other and parallel to the axis of the sheath 12.

[0041] In the second embodiment, different from the first embodiment, the inner planes of the first guide plate 14 and the second guide plate 15 form a horn shape, and the horn mouth faces the guide surface 21. The horn shape facilitates the guiding of the water delivery hose into the guide groove 23.

[0042] In the third embodiment, different from the first embodiment, the guide surface 21 of the guide block 2 is recessed to form two grooves 26, which are respectively located on the two sides of the guide groove 23 to avoid the first guide plate 14 and the second guide plate 15. The first guide plate 14 and the second guide plate 15 are both abutted on the wall surface of the groove 26. The guide piece 24 is formed between the two grooves 26, and the two sides of the guide piece 24 are respectively in contact with the first guide plate 14 and the second guide plate 15. The channel formed by the first guide plate 14 and the second guide plate 15 cooperates with the guide piece 24 to form a slide for the installation of the guide block 2, and at the same time, it limits the installation of the guide block 2.

[0043] The wall surface of the recess 26 abutting against the first guide plate 14 or the second guide plate 15 is an arc surface, and the outer side surface profile of the first guide plate 14 and the second guide plate 15 is matched with the wall surface of the recess 26. By abutting against the arc surface, the contact in the sliding-in process of the guide block 2 is avoided, and the abrasion of the outer side surface of the first guide plate 14 and the second guide plate 15 and the wall surface of the recess 26 is reduced.

[0044] The preferred embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the utility model within the technical concept of the utility model, and these simple modifications all belong to the protection scope of the utility model.

Claims

1. An installation guide structure of a ureteral guide sheath, the guide sheath (1) comprising an inner hollow sheath seat (11), and a sheath tube (12) and a branch tube (13) communicating with the inside of the sheath seat (11), the bottom of the sheath seat (11) being open, characterized in that, The installation guide structure comprises a guide block (2) which is detachably slid into the sheath seat (11) from the bottom of the sheath seat (11), and the guide block (2) is provided with an abutting surface (22) abutting against the top of the sheath seat (11) and an arc-shaped guide surface (21) towards the inner side of the sheath pipe (12), the center of the arc of the guide surface (21) is away from the guide block (2), the guide surface (21) is provided with a guide groove (23) along the circumference of the arc, the groove width of the guide groove (23) is greater than the diameter of the water delivery hose (3), the axial extension line of the sheath pipe (12) passes through the guide groove (23), and the slot opening of the guide groove (23) near one end of the branch pipe (13) is opposite to the branch pipe (13).

2. The installation guide structure of a ureteral guide sheath according to claim 1, characterized by, The bottom surface of the guide groove (23) is tangent to the pipe wall of the branch pipe (13) away from the sheath pipe (12).

3. The installation guide structure of a ureteral guide sheath according to claim 1, characterized by, Further comprising a first guide plate (14) and a second guide plate (15), the first guide plate (14) and the second guide plate (15) are connected to the inner wall of the sheath seat (11), and a space for the water delivery hose (3) to pass through during entering the branch pipe (13) from the sheath pipe (12) is formed between the first guide plate (14) and the second guide plate (15).

4. The installation guide structure of a ureteral guide sheath according to claim 3, characterized by, The planes on the inner sides of the first guide plate (14) and the second guide plate (15) are parallel to each other and parallel to the axis of the sheath pipe (12).

5. The installation guide structure of a ureteral guide sheath according to claim 3, characterized by, The planes on the inner sides of the first guide plate (14) and the second guide plate (15) are parallel to the axis of the sheath pipe (12), the planes on the inner sides of the first guide plate (14) and the second guide plate (15) form a horn shape, and the horn mouth faces the guide surface (21).

6. The installation guide structure of a ureteral guide sheath according to claim 3 or 4 or 5, characterized by, The first guide plate (14) and the second guide plate (15) are both abutted against the guide surface (21).

7. The installation guide structure of a ureteral guide sheath according to claim 3 or 4 or 5, characterized by, The guide surface (21) of the guide block (2) is recessed to form two grooves (26), the two grooves (26) are respectively located on the two sides of the guide groove (23) to avoid the first guide plate (14) and the second guide plate (15), the first guide plate (14) and the second guide plate (15) are both abutted against the wall surface of the groove (26), and a guide piece (24) is formed between the two grooves (26), the two sides of the guide piece (24) are respectively in contact with the first guide plate (14) and the second guide plate (15).

8. The installation guide structure of a ureteral guide sheath according to claim 7, characterized by, The wall surface of the groove (26) abutting against the first guide plate (14) or the second guide plate (15) is an arc surface, and the outer side surface profile of the first guide plate (14) and the second guide plate (15) is matched with the wall surface of the groove (26).

9. The installation guide structure of a ureteral guide sheath according to any one of claims 1 to 5, characterized by, A convex circular table (25) is arranged at one end of the guide block (2) away from the sheath pipe (12), and the circular table (25) is exposed outside the sheath seat (11).

10. The installation guide structure of a ureteral guide sheath according to claim 3 or 4 or 5, characterized by, Further comprising a guide slope (16) arranged on the inner wall of the sheath seat (11) and located between the first guide plate (14) and the second guide plate (15), the guide slope (16) and the guide surface (21) form a horn mouth shape.

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