Disposable flexible ureteroscope sheath position covering device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a disposable flexible ureteroscope sheath position covering device which comprises a shell. A hydrophilic coating is arranged on the surface of the shell; the shell is composed of two half shells; channels are formed in the inner walls of the two half shells; connecting grooves are formed in the tops of the two half shells, connecting blocks are mounted in the connecting grooves, drawing wires are fixed to the tops of the connecting blocks, first mounting grooves are formed in the tops and the bottoms of the two half shells, connecting strips are placed in the first mounting grooves, and first threaded holes are formed in the connecting strips; according to the ureteroscope, due to the fact that the outer shell serves as a transition bridge between the outer sheath and the ureteroscope body, the outer sheath can be directly pushed to reach the ureteral pelvis connecting portion under the condition that the wall of the ureter is not damaged, and the safety of a patient is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a disposable ureteroscope outer sheath replacement device. Background Art

[0002] Upper urinary tract stones are a common and frequently occurring disease. The mainstream surgical method is ureteroscopic lithotripsy. During the operation, the soft endoscope sheath must be placed under the guidance of a guidewire. Because the inner core of the soft endoscope sheath must be conical, relatively sharp, and longer than the soft endoscope sheath, even if the soft endoscope sheath is placed under the guidance of a guidewire, it is still a blind insertion. The sharp inner core of the soft endoscope sheath can easily damage the collecting system. To avoid damage, the sheath must be placed according to the principle of shallow rather than deep. If obvious resistance is encountered during placement, stop and check with the endoscope. If it is clear that the sheath is not in place, then rely on the feel and the predicted length of the sheath to advance the sheath. Therefore, the position of the soft endoscope sheath is often not ideal when placed once, and the soft endoscope sheath sometimes slips out during lithotripsy, so it is often necessary to place it under non-direct vision multiple times. Because the outer sheath of the soft endoscope must be significantly thicker than the body of the soft endoscope, a gap must be left between the two to serve as a water outlet. Therefore, if the soft endoscope sheath is pushed directly along the body of the soft endoscope after the soft endoscope tip is in place in the renal pelvis, damage to the ureteral wall may occur.

[0003] Therefore, a disposable flexible ureteroscope outer sheath replacement device is proposed. Utility Model Content

[0004] The utility model aims to provide a disposable ureteroscope outer sheath replacement device.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] Disposable ureteroscope outer sheath replacement device, including:

[0007] shell;

[0008] The surface of the shell is provided with a hydrophilic coating;

[0009] The housing is composed of two half shells;

[0010] The inner walls of the two half shells are each provided with a channel;

[0011] The tops of the two half shells are each provided with a connecting groove, a connecting block is installed in the connecting groove, and a wire drawing is fixed on the top of the connecting block.

[0012] Preferably, the tops and bottoms of the two half shells are each provided with a first mounting groove, and a connecting strip is placed in the first mounting groove.

[0013] Preferably, a first threaded hole is provided on the connecting bar, a second threaded hole is provided in the first mounting groove, and fixing bolts are threadedly connected in the first threaded hole and the second threaded hole.

[0014] Preferably, the inner walls of the two half shells are both provided with protection strips.

[0015] Preferably, the inner walls of the two half shells are provided with a card slot, and one end of the protective strip close to the two half shells is fixed with a card column that is engaged in the card slot.

[0016] Preferably, a second mounting groove is provided on the top of the connecting block, a first clamping hole is provided on the inner wall of the second mounting groove, and a second clamping hole is provided on the inner wall of the connecting groove;

[0017] A fixing pin is clamped inside the first clamping hole and the second clamping hole;

[0018] An auxiliary plate is fixed to one end of the fixing pin;

[0019] The outer wall of the fixing pin is provided with a compression spring;

[0020] One end of the compression spring is fixed to the auxiliary plate, and the other end of the compression spring is fixed to the inner wall of the second mounting groove.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] When the soft endoscope reaches the renal pelvis and the outer sheath is not in place, the soft endoscope is withdrawn and the outer shell is directly installed on the soft endoscope body. It should be noted that the outer shell needs to be installed at the distal end of the flexible section on the head side of the soft endoscope body so as not to affect the bending of the soft endoscope body. Then the endoscope is inserted again. During the process of the lens entering the renal pelvis, due to the gap between the channel on the inner wall of the outer shell and the soft endoscope body, the saline in the outer sheath and renal pelvis can flow out, maintaining low pressure in the renal pelvis and a clear field of view. The outer shell is installed at the distal end of the flexible section on the head side of the soft endoscope body. After the lens enters the renal pelvis, the outer shell has also reached the ureteropelvic junction. The outer sheath of the soft endoscope is pushed forward until it is blocked by the bent soft endoscope lens or the outer sheath is captured under the microscope. The outer sheath can be successfully replaced by withdrawing a little bit of the outer sheath. Because the outer shell acts as a transition bridge between the outer sheath and the endoscope body, the outer sheath can be directly pushed forward to the ureteropelvic junction without damaging the ureteral wall, ensuring the safety of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 For this utility model Figure 1 A magnified view of middle A;

[0025] Figure 3 For this utility model Figure 1 Enlarged view of middle B;

[0026] Figure 4 This is a schematic diagram of the fixing pin structure in the present utility model;

[0027] Figure 5 This is a schematic diagram of the connecting strip structure in the present utility model;

[0028] Figure 6 This is a schematic diagram of the protective strip connection structure in the present utility model.

[0029] In the figure: 1. Half shell; 2. Connecting groove; 3. Connecting block; 4. Wire drawing; 5. Second mounting groove; 6. First clamping hole; 7. Second clamping hole; 8. Fixing pin; 9. Auxiliary plate; 10. Compression spring; 11. Protective strip; 12. Clamping groove; 13. Clamping column; 14. Channel; 15. First mounting groove; 16. Connecting strip; 17. Fixing bolt; 18. First threaded hole; 19. Second threaded hole. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0032] Example 1:

[0033] See also Figure 1-3 , 5, 6. The utility model provides a technical solution: In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a disposable ureteroscope outer sheath replacer, comprising: an outer shell; a hydrophilic coating is provided on the surface of the outer shell; the outer shell is composed of two half shells 1; a channel 14 is provided on the inner wall of the two half shells 1; a connecting groove 2 is provided on the top of the two half shells 1, a connecting block 3 is installed in the connecting groove 2, and a wire drawing 4 is fixed on the top of the connecting block 3, a first installation groove 15 is provided on the top and bottom of the two half shells 1, a connecting strip 16 is placed in the first installation groove 15, a first threaded hole 18 is provided on the connecting strip 16, a second threaded hole 19 is provided in the first installation groove 15, and a fixing bolt 17 is threadedly connected to the first threaded hole 18 and the second threaded hole 19, a protective strip 11 is provided on the inner wall of the two half shells 1, a card slot 12 is provided on the inner wall of the two half shells 1, and a card column 13 is fixed on the end of the protective strip 11 close to the two half shells 1 and is carded in the card slot 12.

[0034] Specifically, when the soft endoscope lens reaches the renal pelvis and the outer sheath is found to be not in place, the soft endoscope is withdrawn at this time, and the outer shell is directly installed on the soft endoscope body. It should be noted that the outer shell needs to be installed at the distal end of the flexible section on the head side of the soft endoscope body, so as not to affect the bending of the soft endoscope body. Then the endoscope is inserted again. During the process of the lens entering the renal pelvis, due to the gap between the channel 14 on the inner wall of the outer shell and the soft endoscope body, the saline in the outer sheath and the renal pelvis can flow out, maintaining low pressure in the renal pelvis and a clear field of vision. The outer shell is installed at the distal end of the flexible section on the head side of the soft endoscope body. After the lens enters the renal pelvis, the outer shell has reached the ureteropelvic junction and the outer sheath of the soft endoscope is pushed forward until it is blocked by the bent soft endoscope lens or the outer sheath is captured under the microscope. The outer sheath can be successfully replaced by withdrawing a little bit of the outer sheath. Because the outer shell acts as a transition bridge between the outer sheath and the endoscope body, the outer sheath can be directly pushed forward to the ureteropelvic junction without damaging the ureteral wall, thereby ensuring the safety of the patient.

[0035] Since the protective strip 11 is provided on the inner wall of the housing, the protective strip 11 can prevent the channel 14 from blocking the soft lens, thereby improving the working efficiency of the soft lens.

[0036] Example 2:

[0037] See also Figure 1 、 2 4. The utility model provides a technical solution: a disposable ureteroscope outer sheath replacer, a second mounting groove 5 is provided on the top of the connecting block 3, a first clamping hole 6 is provided on the inner wall of the second mounting groove 5, and a second clamping hole 7 is provided on the inner wall of the connecting groove 2; a fixing pin 8 is clamped inside the first clamping hole 6 and the second clamping hole 7; an auxiliary plate 9 is fixed to one end of the fixing pin 8; a compression spring 10 is provided on the outer wall of the fixing pin 8; one end of the compression spring 10 is fixed to the auxiliary plate 9, and the other end of the compression spring 10 is fixed to the inner wall of the second mounting groove 5.

[0038] Specifically, the fixing pin 8 is driven to move by the auxiliary plate 9, and the compression spring 10 will perform a stretching movement. After one end of the fixing pin 8 is disengaged from the inside of the second clamping hole 7, the wire drawing 4 can be disassembled. Therefore, the utility model facilitates the disinfection and cleaning of the wire drawing 4 to avoid cross infection.

[0039] Working principle:

[0040] First, when the soft lens reaches the renal pelvis and the outer sheath is found to be not in place, the soft lens is withdrawn at this time and the outer shell is directly installed on the soft lens body. It should be noted that the outer shell needs to be installed at the distal end of the flexible section on the head side of the soft lens body so as not to affect the bending of the soft lens body. Then the lens is inserted again. During the process of the lens entering the renal pelvis, due to the gap between the channel 14 on the inner wall of the outer shell and the soft lens body, the saline in the outer sheath and the renal pelvis can flow out, maintaining low pressure in the renal pelvis and a clear field of vision. The outer shell is installed at the distal end of the flexible section on the head side of the soft lens body. After the lens enters the renal pelvis, the outer shell has reached the ureteropelvic junction and the outer sheath of the soft lens is pushed forward until it is blocked by the bent soft lens or the outer sheath is captured under the microscope. The outer sheath can be successfully filled by withdrawing a little bit of the outer sheath. Because the outer shell acts as a transition bridge between the outer sheath and the lens body, the outer sheath can be directly pushed forward to the ureteropelvic junction without damaging the ureteral wall, thus ensuring the safety of the patient.

[0041] Since a protective strip 11 is provided on the inner wall of the housing, the protective strip 11 can prevent the channel 14 from blocking the soft lens, thereby improving the working efficiency of the soft lens;

[0042] Secondly, the fixing pin 8 is driven to move by the auxiliary plate 9. At this time, the compression spring 10 will perform a stretching movement. After one end of the fixing pin 8 is disengaged from the second clamping hole 7, the wire drawing 4 can be disassembled. Therefore, the utility model facilitates the disinfection and cleaning of the wire drawing 4 to avoid cross infection.

[0043] In the description of the present invention, it should be understood that the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0044] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A disposable ureteroscope sheath replacement device, characterized in that: include: shell; The surface of the shell is provided with a hydrophilic coating; The housing is composed of two half shells (1); The inner walls of the two half shells (1) are both provided with channels (14); A connecting groove (2) is provided on the top of each of the two half shells (1), a connecting block (3) is installed in the connecting groove (2), and a wire drawing (4) is fixed on the top of the connecting block (3).

2. The disposable ureteroscope outer sheath replacement device according to claim 1, characterized in that: The top and bottom of the two half shells (1) are both provided with a first installation groove (15), and a connecting strip (16) is placed in the first installation groove (15).

3. The disposable ureteroscope outer sheath replacement device according to claim 2, characterized in that: A first threaded hole (18) is provided on the connecting bar (16), a second threaded hole (19) is provided in the first mounting groove (15), and fixing bolts (17) are connected by threads in the first threaded hole (18) and the second threaded hole (19).

4. The disposable ureteroscope outer sheath replacement device according to claim 1, characterized in that: The inner walls of the two half shells (1) are both provided with protection strips (11).

5. The disposable flexible ureteroscope outer sheath replacement device according to claim 4, characterized in that: The inner walls of the two half shells (1) are each provided with a card slot (12), and one end of the protection strip (11) close to the two half shells (1) is fixed with a card post (13) that is carded in the card slot (12).

6. The disposable flexible ureteroscope outer sheath replacement device according to claim 1, characterized in that: A second mounting groove (5) is provided on the top of the connecting block (3), a first clamping hole (6) is provided on the inner wall of the second mounting groove (5), and a second clamping hole (7) is provided on the inner wall of the connecting groove (2); A fixing pin (8) is clamped inside the first clamping hole (6) and the second clamping hole (7); An auxiliary plate (9) is fixed to one end of the fixing pin (8); The outer wall of the fixing pin (8) is provided with a compression spring (10); One end of the compression spring (10) is fixed to the auxiliary plate (9), and the other end of the compression spring (10) is fixed to the inner wall of the second installation groove (5).

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