Ureteral calculus removing catheter

Abstract

The utility model relates to a ureter stone removal catheter in the technical field of medical instruments, which comprises a sheathing canal, one end of the sheathing canal is fixedly connected with a swirling cavity, the other end of the sheathing canal is connected with a bending part, the sheathing canal is provided with a pressure detection hole and a pressure detection channel, and the pressure detection hole is communicated with the pressure detection channel. The other end of the pressure detection channel is connected with a detachable pressure sensor. The pressure sensor is reasonable in structure, the detachable pressure sensor is arranged, when the pressure sensor is not used, the sensor body can be detached to be stored conveniently, and when the pressure sensor is used, the sensor body and the sensor chip are connected conveniently, rapidly and reliably; the pressure sensor can monitor accurate and reliable data through the pressure detection channel, high pressure in a minimally invasive cavity is avoided, and the safety rate of an operation and the calculus removing efficiency are remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a ureteral lithotripsy catheter. Background Art

[0002] Ureteral guide sheath is mainly used in clinical practice for ureteral stenosis, adhesion, obstruction, blockage, and stones. It is necessary to perform relevant surgery to establish a surgical channel for treatment, and to introduce an endoscope, laser fiber, stone removal instrument or operating cable through the channel. The patent with announcement number CN110215262B discloses a flexible suction sheath, including: an outer sheath tube and a dilator catheter, the dilator catheter is inserted into the outer sheath tube and extends from the opening at the end of the insertion end of the outer sheath tube, the insertion end of the outer sheath tube is provided with a flexible sheath tube head, the non-insertion end of the outer sheath tube is provided with an outer sheath tube joint, a bending control button is provided on the outer sheath tube joint, and a sealing component and a water outlet are also provided on the outer sheath tube joint. This patent sets the head of the outer sheath tube into a flexible structure. When intubating the patient, the bending control button set at the outer sheath tube joint can flexibly control the advancement direction of the suction sheath, prevent the sheath tube from colliding with the patient's organs, and reduce the damage to the patient. However, the pressure cannot be monitored at any time during the operation, and there is a certain risk. Therefore, a ureteral lithotripsy catheter is needed to solve the above technical problems. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, the utility model provides a ureteral lithotripsy catheter, including a sheath tube, one end of the sheath tube is fixedly connected to a vortex cavity, the other end of the sheath tube is connected to a bending portion, the bending portion can be bent 270 degrees, and can smoothly enter the surgical bending part, the sheath tube is designed to be thin at the front and thick at the back, a developing line is provided on the sheath tube, and a developing ring is provided at the end of the sheath tube away from the vortex cavity. When the endoscope needs to be withdrawn due to the large stone during the operation, it is only necessary to withdraw the endoscope to the diameter change point to reduce the operation of withdrawing the endoscope; a pressure detection hole and a pressure detection channel are provided on the sheath tube, the pressure detection hole is connected to the pressure detection channel, the other end of the pressure detection channel is connected to a detachable pressure sensor, four pressure monitoring holes are provided, and the pressure monitoring holes pass through from the inside of the sheath tube to the outside to avoid the blockage of the tube by the intracavitary tissue and gravel, and can monitor accurate and reliable data.

[0004] Preferably, the pressure sensor includes a sensor chip and a sensor body, a pressure detection connector 1 is provided on the vortex chamber, the pressure detection connector 1 is matched with a pressure detection connector 2, a sensor chip is fixed in the pressure detection connector 1, the sensor chip is connected with a connecting piece 1 through a wire 1, the connecting piece 1 is also connected with a compression spring, one end of the compression spring is fixedly connected to the inner wall of the pressure detection connector 1, the end of the connecting piece 1 away from the compression spring is matched with a connecting piece 2, the connecting piece 2 is arranged on the pressure detection connector 2, the connecting piece 2 is connected to the sensor body through a wire 2, a card slot is provided on the pressure detection connector 1, a card block matched with the card slot is provided on the pressure detection connector 2, the card block enters the card slot from the inlet of the card slot, the pressure detection connector 2 is rotated, the card block is stuck in the card slot to avoid falling off, and the connecting piece 1 transmits the data received by the sensor chip to the sensor body after contacting the connecting piece 2. The arrangement here facilitates the disassembly and installation of the pressure sensor body and is convenient for storage. Connecting piece 1 and connecting piece 2 can adopt a core-insertion structure, which is the existing technology, and its specific structure and principle will not be repeated. When the core-insertion structure is adopted, the connecting piece 2 is rotatably connected to the inner wall of the pressure detection connector 2 through a bearing, which does not affect the rotational fixation of the pressure detection connector 1 and the pressure detection connector 2 when they are clamped.

[0005] Preferably, a slide groove is provided on the inner wall of the pressure detection joint 1, a guide block is slidably provided in the slide groove, and the guide block is fixedly connected to the connecting piece 1, so that the movement of the connecting piece 1 is more stable, and the reliability of the contact between the connecting piece 1 and the connecting piece 2 is ensured.

[0006] Preferably, a suction joint is provided at the bottom of the vortex chamber, a rear cover is provided on the side of the vortex chamber away from the sheath, a scope inlet is provided on the rear cover, the scope inlet cooperates with the expansion tube and the scope, the expansion tube or the scope extends into the sheath from the scope inlet, and a handle is provided on the outer wall of the vortex chamber. The rear cover is connected to the vortex chamber with a hook structure, and the handle and the vortex chamber are connected as a whole to avoid falling off; the handle is arranged below the vortex chamber, which is convenient for clamping and one-handed operation, greatly reducing a series of risks caused by unstable operation and effectively shortening the catheterization operation time.

[0007] Working principle: There are four circular pressure monitoring holes at the end of the pressure sensing channel, which run from the inside to the outside of the sheath tube to avoid the blockage of the tube by intracavitary tissue and gravel, and can monitor accurate and reliable data; the sensor uses the liquid pressure measurement principle to measure the pressure, and the endoscope system perfusion flow, which is practical and easy to implement compared with the existing technology, and solves the contradiction between insufficient perfusion flow and intracavitary high pressure in minimally invasive intracavitary stone removal, and significantly improves the safety rate and efficiency of stone removal.

[0008] The utility model also includes other components that enable a ureteral lithotripsy catheter to be used normally, such as a medical perfusion suction platform (application number CN201410041761.1) used in conjunction with it, a control component of a pressure sensor, etc., which are conventional technical means in the art. In addition, the devices or components not limited in the utility model, such as the sensor chip, the sensor body, the first connecting piece, the second connecting piece, the wire, the bending part, etc., all adopt conventional technical means and conventional equipment in the art.

[0009] The beneficial effects of the utility model are as follows: the structure is reasonable and a detachable pressure sensor is provided. When not in use, the sensor body can be removed for easy storage. When in use, the connection between the sensor body and the sensor chip is convenient, fast and reliable. The pressure sensor can monitor accurate and reliable data through the pressure detection channel, avoiding high pressure in the minimally invasive cavity, and significantly improving the safety rate of the operation and the efficiency of stone removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0011] Figure 1 This is a structural schematic diagram of a ureteral lithotripsy catheter in an embodiment of the utility model;

[0012] Figure 2 for Figure 1 A schematic diagram of the structure of the pressure detection joint 1 and the pressure detection joint 2;

[0013] Figure 3 for Figure 2 Right view of the middle pressure detection joint 1;

[0014] Figure 4 for Figure 2 Schematic diagram of the structure after the pressure detection joint 1 and the pressure detection joint 2 are connected.

[0015] In the figure: 1. sheath; 2. back cover; 3. vortex chamber; 4. handle; 5. pressure detection connector 1; 6. suction connector; 7. expansion tube; 8. pressure monitoring hole; 9. bending part; 10. pressure detection channel; 11. endoscope entrance; 12. sensor chip; 13. wire 2; 14. sensor body; 15. pressure detection connector 2; 16. connecting piece 1; 17. guide block; 18. wire 1; 19. compression spring; 20. slot; 21. inlet; 22. connecting piece 2; 23. block; 24. slide slot. DETAILED DESCRIPTION

[0016] The present invention is described clearly below in conjunction with the drawings and specific embodiments in the embodiments of the present invention. The description here is only used to explain the present invention, but not as a limitation of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without making creative work, any modifications, equivalent substitutions, improvements, etc., should be included in the protection scope of the present invention. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] Example

[0018] like Figure 1-4 As shown, the utility model provides a ureteral lithotripsy catheter, including a sheath tube 1, one end of the sheath tube 1 is fixedly connected to a vortex cavity 3, the other end of the sheath tube 1 is connected to a bending portion 9, the bending portion 9 can be bent 270 degrees, and can smoothly enter the surgical bending portion 9, the sheath tube 1 is designed to be thin at the front and thick at the back, and a developing line is arranged on the sheath tube 1, the sheath tube is transparent and is designed with a developing line, a scale line and a developing ring, so that the doctor can understand the operation status in real time during the operation.

[0019] A developing ring is provided at one end of the sheath tube 1 away from the vortex cavity 3. During the operation, when the endoscope needs to be withdrawn because the stone is too large, the endoscope only needs to be withdrawn to the diameter-changing position to reduce the operation of withdrawing the endoscope. A pressure detection hole and a pressure detection channel 10 are provided on the sheath tube 1. The pressure detection hole is connected to the pressure detection channel 10. The other end of the pressure detection channel 10 is connected to a detachable pressure sensor. Four pressure monitoring holes 8 are provided. The pressure monitoring holes 8 pass through from the inside to the outside of the sheath tube 1 to avoid blockage of the tube by intracavitary tissue and gravel, and can monitor accurate and reliable data.

[0020] The pressure sensor includes a sensor chip 12 and a sensor body 14. A pressure detection connector 15 is provided on the vortex chamber 3. The pressure detection connector 15 is matched with a pressure detection connector 2 15. The sensor chip 12 is fixed in the pressure detection connector 5. The sensor chip 12 is connected to a connecting piece 16 through a wire 18. The connecting piece 16 is also connected to a compression spring 19. One end of the compression spring 19 is fixedly connected to the inner wall of the pressure detection connector 5. The end of the connecting piece 16 away from the compression spring 19 is matched with a connecting piece 2 2. The connecting piece 22 is arranged on the pressure detection connector 15. The connecting piece 22 is connected to the sensor body 14 through the wire 13. The pressure detection connector 15 is provided with a card slot 20. The pressure detection connector 15 is provided with a card block 23 that cooperates with the card slot 20. The card block 23 enters the card slot 20 from the inlet 21 of the card slot 20. The pressure detection connector 15 is rotated, and the card block 23 is stuck in the card slot 20 to prevent it from falling off. After the connecting piece 16 contacts the connecting piece 22, the data received by the sensor chip 12 is transmitted to the sensor body 14. This arrangement facilitates the disassembly and installation of the pressure sensor body 14 and is convenient for storage. The connecting piece 16 and the connecting piece 22 can be in the form of a plug core. This is a prior art, and its specific structure and principle will not be repeated. When the plug core structure is adopted, the connecting piece 2 is rotatably connected to the inner wall of the pressure detection connector 2 through a bearing, which does not affect the rotation fixation when the pressure detection connector 1 and the pressure detection connector 2 are connected.

[0021] The inner wall of the pressure detection joint 1 5 is provided with a slide groove 24, in which a guide block 17 is slidably arranged, and the guide block 17 is fixedly connected to the connecting piece 1 16. This makes the movement of the connecting piece 1 16 more stable, and ensures the reliability of the contact between the connecting piece 1 16 and the connecting piece 2 22.

[0022] A suction connector 6 is provided at the bottom of the vortex chamber 3, which can be connected to the suction chamber liquid through a pipeline. A rear cover 2 is provided on the side of the vortex chamber 3 away from the sheath tube 1. A scope entrance 11 is provided on the rear cover 2. The scope entrance 11 cooperates with the expansion tube 7 and the scope. The expansion tube 7 or the scope extends into the sheath tube 1 from the scope entrance 11. A handle 4 is provided on the outer wall of the vortex chamber 3. The rear cover 2 is connected to the vortex chamber 3 with a hook structure, and the handle 4 is connected to the vortex chamber 3 to prevent it from falling off; the handle 4 is arranged below the vortex chamber 3, which is convenient for clamping and one-handed operation, greatly reducing a series of risks caused by unstable operation, and effectively shortening the catheterization operation time. After the endoscope is inserted into the sheath tube, the bending part can be driven to bend by controlling the bending of the endoscope, so that it can reach the surgical site smoothly, and prevent the difficulty of sheath insertion caused by the bending of the surgical channel.

[0023] When working, it is used in conjunction with the medical perfusion and suction platform with application number: CN201410041761.1. When in use, the platform controls the peristaltic pump to perfuse liquid into the cavity through the "liquid perfusion tube-endoscope system-a ureteral lithotripsy catheter". The pressure sensor measures the liquid pressure in the cavity in real time, and converts the intracavitary pressure into an electrical signal and feeds it back to the platform. The platform controls the internal negative pressure pump in real time and intelligently according to the measured intracavitary pressure, forming negative pressure in the stone collection bottle and the collection container, and the waste liquid in the cavity is sucked out together with the gravel by the negative pressure, thereby achieving the purpose of automatically adjusting the intracavitary pressure. Specifically, the dilation tube is inserted into the sheath 1 to pre-dilate the operation, the dilation tube is pulled out, and the endoscope is inserted from the back cover, and liquid is perfused into the surgical site through the perfusion channel of the endoscope, and liquid is sucked from the surgical site through the suction joint to achieve liquid circulation; in this process, four circular pressure monitoring holes 8 are provided at the end of the pressure sensing channel, and the pressure monitoring holes 8 pass through from the inside to the outside of the sheath 1 to avoid blockage of the tube by intracavitary tissue and gravel, and can monitor accurate and reliable data; the sensor uses the liquid pressure measurement principle to measure the pressure, and the endoscope system perfusion flow rate solves the contradiction between insufficient perfusion flow and high pressure in the cavity for minimally invasive intracavitary stone removal, and significantly improves the safety rate and stone removal efficiency of the operation.

[0024] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A ureteral lithotripsy catheter, comprising a sheath tube, one end of which is fixedly connected to a vortex cavity, and the other end of which is connected to a curved portion, characterized in that: The sheath tube is provided with a pressure detection hole and a pressure detection channel, the pressure detection hole is connected to the pressure detection channel, and the other end of the pressure detection channel is connected to a detachable pressure sensor; The pressure sensor includes a sensor chip and a sensor body. A pressure detection connector 1 is provided on the vortex chamber. The pressure detection connector 1 is matched with a pressure detection connector 2. A sensor chip is fixed in the pressure detection connector 1. The sensor chip is connected to a connecting piece 1 through a wire 1. The connecting piece 1 is also connected to a compression spring. One end of the compression spring is fixedly connected to the inner wall of the pressure detection connector 1. The end of the connecting piece 1 away from the compression spring is matched with a connecting piece 2. The connecting piece 2 is arranged on the pressure detection connector 2. The connecting piece 2 is connected to the sensor body through a wire 2. A card slot is provided on the pressure detection connector 1. A card block matching the card slot is provided on the pressure detection connector 2. After the connecting piece 1 contacts the connecting piece 2, the data received by the sensor chip is transmitted to the sensor body.

2. A ureterolithotomy catheter according to claim 1, characterized in that: A slide groove is arranged on the inner wall of the first pressure detection joint, a guide block is slidably arranged in the slide groove, and the guide block is fixedly connected to the first connecting piece.

3. The ureterolithotomy catheter according to claim 1, characterized in that: A suction joint is provided at the bottom of the vortex chamber, and a rear cover is provided on the side of the vortex chamber away from the sheath tube. A endoscope inlet is provided on the rear cover, and the endoscope inlet cooperates with the expansion tube and the endoscope. The expansion tube or the endoscope extends into the sheath tube from the endoscope inlet, and a handle is provided on the outer wall of the vortex chamber.

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