Bending-adjustable ureter guiding sheath

Abstract

The utility model discloses a bending-adjustable ureter guiding sheath, which relates to the technical field of medical instruments and comprises a fixing block, the right part of the fixing block is fixedly connected with a finger lock, the inner wall of the fixing block is fixedly connected with a guiding sheath mechanism, and the right end of the fixing block is fixedly connected with a limiting mechanism. The inner wall of the guide sheath mechanism is movably sleeved with an expansion hose structure, the guide sheath mechanism comprises a guide sheath, and the right portion of the guide sheath is fixedly connected with the inner wall of the fixing block. According to the bending-adjustable ureter guiding sheath, in the using process, if the bending direction of the adjusting head needs to be adjusted, the connecting plate needs to be pulled, the connecting plate drives the connecting rope, the connecting rope slides on the inner wall of the straight section guiding hole, the adjusting head is bent, and therefore the adjusting head drives an expanded hose to bend synchronously; and the direction of the expansion hose is changed, so that the expansion hose can be bent more conveniently, and the effect of bending the guide sheath can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an adjustable ureteral guide sheath. Background Art

[0002] Ureteral guide sheath is a medical device mainly used in urological surgery. During surgery, clinicians can manipulate the sheath of the ureteral guide sheath to insert it into the patient's urinary tract to create a surgical channel to assist endoscopes and other instruments to enter the urinary cavity through the hollow surgical channel of the sheath, providing a continuous operating channel for them.

[0003] For example, Chinese patent publication number CN217447867U discloses a ureteral guide sheath. When the guide sheath and the dilator are assembled, the dilator tube connector is connected through the handle and is mostly hidden in the sheath tube connector, thereby significantly reducing the overall volume of the ureteral guide sheath and effectively avoiding the problem of separation of the guide sheath and the dilator due to touching during use. When the dilator is removed from the guide sheath, only one hand is required to hold the upper end of the handle and push hard in the direction of the dilator tube connector. The elastic force between the handle and the positioning assembly can be used to make the dilator tube connector pop out from the sheath tube connector. The operation is simple and convenient; the structural design is ingenious and reasonable, the preparation and application implementation is highly feasible, and the practicability is strong.

[0004] The existing technology has the following problems:

[0005] The ureteral guide sheath of the prior art cannot be bent during operation, which reduces the practicality of the ureteral guide sheath. At the same time, the prior art has a poor limiting effect when limiting the dilation tube, resulting in instability of the dilation tube during subsequent operation, reducing the practicality of the device. Utility Model Content

[0006] The utility model provides a ureteral guide sheath with adjustable bend to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A ureteral guide sheath with adjustable bend comprises a fixed block, the right part of which is fixedly connected with a finger buckle, the inner wall of the fixed block is fixedly connected with a guide sheath mechanism, the right end of the fixed block is fixedly connected with a limiting mechanism, the inner wall of the guide sheath mechanism is movably sleeved with an expansion hose structure, the guide sheath mechanism comprises a guide sheath, the right part of the guide sheath is fixedly connected with the inner wall of the fixed block, the limiting mechanism comprises a mounting block, the left end of the mounting block is fixedly connected with the right end of the fixed block, the expansion hose structure comprises an expansion hose, the outer wall of the expansion hose is movably sleeved with the inner wall of the guide sheath.

[0009] Preferably, the left portion of the guide sheath is fixedly connected with an adjusting head, and the front and rear portions of the inner walls of the guide sheath and the adjusting head are provided with wire grooves, and the inner cavities of the wire grooves are interconnected with the inner cavities of the adjusting head and the mounting block.

[0010] Preferably, the upper and lower parts of the inner walls of the guide sheath and the regulating head are both provided with straight guide holes, and the inner cavities of the straight guide holes are not interconnected with the inner cavities of the regulating head.

[0011] Preferably: the upper and lower positions of the right part of the fixed block are fixedly connected with a fixing rod, the outer wall of the fixing rod is fixedly connected to the inner wall of the guide sheath, the inner wall of the fixing rod is movably sleeved with a connecting rope, the left end of the connecting rope is fixedly connected to the left part of the straight section guide hole, and the right end of the connecting rope is fixedly connected to a connecting plate.

[0012] Preferably, the upper and lower positions of the right part of the installation block are fixedly connected with connection blocks, and the top of the connection block is rotatably connected with a limiting rod.

[0013] Preferably, the left portion of the limiting rod is fixedly connected with an elastic sheet, and the elastic sheet has a V-shape.

[0014] Preferably, a limiting block is inserted into the right part of the limiting rod, the left end of the limiting block is fixedly connected to the right end of the mounting block, and the inner wall of the limiting block is movably sleeved with the outer wall of the expansion hose.

[0015] Preferably: a pull plate is fixedly connected to the right end of the expansion hose, a limiting groove is provided on the right part of the expansion hose, and an outer wall of the limiting groove is plugged into an inner wall of the limiting rod.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides an adjustable ureteral guide sheath. During use, if the bending direction of the adjusting head needs to be adjusted, the connecting plate is pulled to make the connecting plate drive the connecting rope, and the connecting rope slides on the inner wall of the straight section guide hole to make the adjusting head bend. The adjusting head drives the expansion hose to bend synchronously, changes the direction of the expansion hose, makes the expansion hose bend more conveniently, and achieves the effect of adjusting the guide sheath.

[0018] 2. The utility model provides an adjustable ureteral guide sheath. By pressing the limit rod, the limit rod is rotated around the top of the connecting block, thereby deforming the elastic sheet, and then the expansion hose is plugged into the limit block, and then the expansion hose is plugged into the inner wall of the guide sheath. Then, according to the required length, the required insertion length of the expansion hose is selected. When the length is appropriate, the limit rod is released, and under the action of the elastic sheet, the limit rod returns to the state before being pressed, thereby making the outer wall of the limit rod clamped with the inner wall of the limit groove, thereby fixing the expansion hose, achieving the effect of limiting and fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the main view of the utility model;

[0020] Figure 2 It is a schematic diagram of the cutaway structure of the main view of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the guide sheath mechanism of the utility model;

[0022] Figure 4 This is an enlarged structural diagram of the utility model at A;

[0023] Figure 5 It is a structural schematic diagram of the limiting mechanism of the utility model.

[0024] In the figure: 1. fixing block; 11. finger buckle; 2. guide sheath mechanism; 21. guide sheath; 22. adjustment head; 23. wire groove; 24. straight section guide hole; 25. fixing rod; 26. connecting rope; 27. connecting plate; 3. limiting mechanism; 31. mounting block; 32. connecting block; 33. limiting rod; 34. elastic sheet; 35. limiting block; 4. expansion hose structure; 41. expansion hose; 42. limiting groove; 43. pull plate. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figure 1-Figure 3 As shown, an adjustable ureteral guide sheath comprises a fixed block 1, the right part of the fixed block 1 is fixedly connected with a finger buckle 11, the inner wall of the fixed block 1 is fixedly connected with a guide sheath mechanism 2, the right end of the fixed block 1 is fixedly connected with a limiting mechanism 3, the inner wall of the guide sheath mechanism 2 is movably sleeved with an expansion hose structure 4, the guide sheath mechanism 2 comprises a guide sheath 21, the right part of the guide sheath 21 is fixedly connected to the inner wall of the fixed block 1, the limiting mechanism 3 comprises a mounting block 31, the left end of the mounting block 31 is fixedly connected to the right end of the fixed block 1, the expansion hose structure 4 comprises an expansion hose 41, the outer wall of the expansion hose 41 is movably sleeved with the inner wall of the guide sheath 21.

[0027] The guide sheath mechanism 2 and the expansion hose structure 4 cooperate to check the patient's urethra, and then the expansion hose structure 4 is limited by the limiting mechanism 3 to prevent the expansion hose structure 4 from slipping.

[0028] like Figure 2 , Figure 3 As shown, the left part of the guide sheath 21 is fixedly connected to the adjusting head 22, and the front and rear parts of the inner walls of the guide sheath 21 and the adjusting head 22 are provided with wire grooves 23, and the inner cavity of the wire grooves 23 is interconnected with the inner cavities of the adjusting head 22 and the mounting block 31, and the upper and lower parts of the inner walls of the guide sheath 21 and the adjusting head 22 are provided with straight guide holes 24, and the inner cavity of the straight guide holes 24 is not interconnected with the inner cavity of the adjusting head 22.

[0029] The required wire is passed through the wire groove 23, and then the adjusting head 22 is adjusted to keep it straight without bending, and then the guide sheath 21 can be inserted into the patient's urethra.

[0030] like Figure 3 , Figure 4 As shown, the upper and lower positions of the right side of the fixed block 1 are fixedly connected with a fixing rod 25, the outer wall of the fixing rod 25 is fixedly connected to the inner wall of the guide sheath 21, the inner wall of the fixing rod 25 is movably sleeved with a connecting rope 26, the left end of the connecting rope 26 is fixedly connected to the left part of the straight section guide hole 24, and the right end of the connecting rope 26 is fixedly connected to a connecting plate 27.

[0031] Later, during use on the patient, if it is necessary to adjust the bending direction of the adjusting head 22, the operator first puts two fingers into the finger buckles 11 respectively, thereby applying external force to the device to prevent the device from shaking, and then pulls the connecting plate 27 to make the connecting plate 27 drive the connecting rope 26, and the connecting rope 26 slides on the inner wall of the straight guide hole 24 to bend the adjusting head 22. The adjusting head 22 drives the expansion hose 41 to bend synchronously, changing the direction of the expansion hose 41, so that the expansion hose 41 can be bent more conveniently, which has the effect of being able to reverse the bend of the guide sheath 21.

[0032] like Figure 2 , Figure 5 As shown, the upper and lower positions of the right part of the mounting block 31 are fixedly connected with connecting blocks 32, the top of the connecting block 32 is rotatably connected with a limiting rod 33, and the left part of the limiting rod 33 is fixedly connected with an elastic sheet 34, and the elastic sheet 34 has a V-shaped shape.

[0033] By pressing the limit rod 33 , the limit rod 33 is rotated around the top of the connecting block 32 , thereby deforming the elastic sheet 34 , and then the expansion hose 41 is plugged into the limit block 35 , and then the expansion hose 41 is plugged into the inner wall of the guide sheath 21 .

[0034] like Figure 2 , Figure 5 As shown, the right part of the limiting rod 33 is inserted with a limiting block 35 , the left end of the limiting block 35 is fixedly connected to the right end of the mounting block 31 , and the inner wall of the limiting block 35 is movably connected to the outer wall of the expansion hose 41 .

[0035] When the expansion hose 41 is inserted to a sufficient length, the limit rod 33 is released. Under the action of the elastic sheet 34, the limit rod 33 returns to the state before being pressed, so that the outer wall of the limit rod 33 is engaged with the inner wall of the limit groove 42, thereby fixing the expansion hose 41 and achieving the effect of limiting and fixing.

[0036] like Figure 2 As shown, a pull plate 43 is fixedly connected to the right end of the expansion hose 41 , and a limiting groove 42 is provided on the right part of the expansion hose 41 , and the outer wall of the limiting groove 42 is plugged into the inner wall of the limiting rod 33 .

[0037] By providing a limiting groove 42 on the right part of the expansion hose 41 , the length of the expansion hose 41 inserted into the patient's urethra can be controlled, and the expansion hose 41 can be limited at the same time to prevent the expansion hose 41 from slipping.

[0038] The working principle of the utility model is as follows: when in use, the limiting rod 33 is pressed to rotate the limiting rod 33 around the top of the connecting block 32, thereby deforming the elastic sheet 34, and then the expansion hose 41 is plugged into the limiting block 35, and then the expansion hose 41 is plugged into the inner wall of the guide sheath 21, and then the required insertion length of the expansion hose 41 is selected according to the required length. When the length is appropriate, the limiting rod 33 is released, and under the action of the elastic sheet 34, the limiting rod 33 returns to the state before being pressed, thereby making the outer wall of the limiting rod 33 engage with the inner wall of the limiting groove 42, thereby fixing the expansion hose 41, which plays a role in limiting and fixing. As a result, when using the adjusting head 22 for a patient, if it is necessary to adjust the bending direction of the adjusting head 22, the operator first puts two fingers into the two finger buckles 11 respectively, thereby applying external force to the device to prevent the device from shaking, and then pulls the connecting plate 27 to make the connecting plate 27 drive the connecting rope 26, and the connecting rope 26 slides on the inner wall of the straight guide hole 24 to bend the adjusting head 22, thereby the adjusting head 22 drives the expansion hose 41 to bend synchronously, and changes the direction of the expansion hose 41, so that the expansion hose 41 can be bent more conveniently, which has the effect of being able to reverse the bend of the guide sheath 21, thereby greatly improving the user experience.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An adjustable ureteral guide sheath, comprising a fixing block (1), characterized in that: The right part of the fixed block (1) is fixedly connected to a finger buckle (11), the inner wall of the fixed block (1) is fixedly connected to a guide sheath mechanism (2), the right end of the fixed block (1) is fixedly connected to a limiting mechanism (3), the inner wall of the guide sheath mechanism (2) is movably sleeved with an expansion hose structure (4), the guide sheath mechanism (2) comprises a guide sheath (21), the right part of the guide sheath (21) is fixedly connected to the inner wall of the fixed block (1), the limiting mechanism (3) comprises a mounting block (31), the left end of the mounting block (31) is fixedly connected to the right end of the fixed block (1), and the expansion hose structure (4) comprises an expansion hose (41), the outer wall of the expansion hose (41) is movably sleeved with the inner wall of the guide sheath (21).

2. The adjustable ureteral guide sheath according to claim 1, characterized in that: The left part of the guide sheath (21) is fixedly connected to the regulating head (22), and the front and rear parts of the inner walls of the guide sheath (21) and the regulating head (22) are provided with a wire groove (23), and the inner cavity of the wire groove (23) is connected to the inner cavity of the regulating head (22) and the mounting block (31).

3. The adjustable ureteral guide sheath according to claim 2, characterized in that: The upper and lower parts of the inner walls of the guide sheath (21) and the regulating head (22) are both provided with straight guide holes (24), and the inner cavity of the straight guide hole (24) is not connected to the inner cavity of the regulating head (22).

4. The adjustable ureteral guide sheath according to claim 3, characterized in that: The upper and lower positions of the right part of the fixed block (1) are fixedly connected to a fixed rod (25); the outer wall of the fixed rod (25) is fixedly connected to the inner wall of the guide sheath (21); the inner wall of the fixed rod (25) is movably sleeved with a connecting rope (26); the left end of the connecting rope (26) is fixedly connected to the left part of the straight section guide hole (24); and the right end of the connecting rope (26) is fixedly connected to a connecting plate (27).

5. The adjustable ureteral guide sheath according to claim 1, characterized in that: The upper and lower positions of the right part of the installation block (31) are fixedly connected with connection blocks (32), and the top of the connection block (32) is rotatably connected with a limit rod (33).

6. The adjustable ureteral guide sheath according to claim 5, characterized in that: The left part of the limiting rod (33) is fixedly connected with an elastic sheet (34), and the elastic sheet (34) has a V-shaped appearance.

7. The adjustable ureteral guide sheath according to claim 5, characterized in that: The right part of the limiting rod (33) is plugged with a limiting block (35), the left end of the limiting block (35) is fixedly connected to the right end of the mounting block (31), and the inner wall of the limiting block (35) is movably sleeved with the outer wall of the expansion hose (41).

8. The adjustable ureteral guide sheath according to claim 5, characterized in that: The right end of the expansion hose (41) is fixedly connected to a pull plate (43), and the right part of the expansion hose (41) is provided with a limiting groove (42), and the outer wall of the limiting groove (42) is plugged into the inner wall of the limiting rod (33).

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