Ureteroscope catheter and ureteral sheath combined structureTechnical Field
The invention relates to the technical field of urological operation equipment, in particular to a combined structure of a ureteroscope catheter and a ureteral sheath.
Background
In ureteroscope operation, the ureteroscope can be through the urethra entering the pathological change position of internal observation and can cooperate the surgical instrument to carry out visual operation treatment in the internal. Clinical in vivo examination and visual surgical treatment require a clear-image endoscope to help doctors to improve the accuracy of diagnosis. In the existing ureteroscope operation, a sheath feeding expansion tube is matched with a ureteroscope sheath to carry out sheath feeding operation, then the ureteroscope catheter is inserted into the ureteroscope sheath to treat an affected part, broken and discharged stones which are hit by holmium laser need to be discharged out of the body through the ureteroscope sheath in the operation process of breaking and discharging stones in urinary surgery, the ureteroscope catheter needs to be withdrawn at the moment, but the broken and discharged stones cannot be completely discharged out of the body at one time due to the fact that the ureteroscope catheter is withdrawn, so that the broken stones cannot be completely discharged out of the body at one time, the ureteroscope catheter needs to be inserted for observing or treating for many times in order to ensure the operation effect, the pain of a patient is increased by repeated operation of inserting the ureteroscope catheter, and meanwhile, the damage to human organs is also easily caused.
Disclosure of Invention
The invention aims to solve the defects of the background technology and provide a combined structure of a ureteroscope catheter and a ureteroscope sheath, which can discharge broken stone outside the body without exiting the ureteroscope catheter.
In order to achieve the purpose, the combined structure of the ureteroscope catheter and the ureteroscope sheath, which is designed by the invention, comprises a tube sheath and a catheter coaxially inserted into the tube sheath, wherein the side part of the tube sheath is connected with a calculus-removing and liquid-draining joint, and one end of the catheter is coaxially fixed in a catheter handle, and the combined structure is characterized in that: the guide pipe is characterized in that a water inlet and instrument channel is formed in the guide pipe along the axial direction of the guide pipe, a water inlet and instrument connector communicated with the water inlet and instrument channel is arranged on the guide pipe handle, a guide pipe cap is fixed at the other end of the guide pipe, and a guide structure communicated with the water inlet and instrument channel and capable of enabling water entering the water inlet and instrument channel to be flushed towards one side of the guide pipe handle is arranged in the guide pipe cap.
Further, the inner diameter of the tube sheath is larger than the outer diameter of the catheter, and a gap between the inner wall of the tube sheath and the outer wall of the catheter is a backwater and calculus removing channel.
Further, the catheter cap comprises a catheter cap sleeve, the catheter cap sleeve comprises a cylindrical sleeve section and a solid cylindrical section coaxial with the cylindrical sleeve section, the guide structure comprises an axial flushing channel arranged in the solid cylindrical section, a lateral flushing channel is arranged between the axial flushing channel and the outer wall of the solid cylindrical section, and an included angle between the axis of the axial flushing channel and the axis of the lateral flushing channel is an acute angle.
Further, the cylindrical sleeve section is coaxially fixed at the other end of the catheter, a water inlet and instrument channel coaxially communicated with the axial flushing channel is axially arranged in the catheter, and a water inlet and instrument connector communicated with the water inlet and instrument channel is arranged on the catheter handle.
Further, a catheter image lighting device channel is formed in the catheter along the axial direction of the catheter, a catheter image lighting device connector communicated with the catheter image lighting device channel is arranged on the catheter handle, and a catheter cap image channel coaxially communicated with the catheter image lighting device channel is formed in the solid cylindrical section along the axial direction of the solid cylindrical section.
Further, a side water outlet of the conduit cap is formed in the outer wall of the cylindrical sleeve section, a side water outlet channel communicated with the side water outlet of the conduit cap is formed in the conduit in the axial direction of the conduit, and a side water outlet channel connector communicated with the side water outlet channel is arranged on the conduit handle.
Further, one end of the tube sheath is coaxially fixed in the tube sheath handle, the side part of the tube sheath handle is provided with the row Dan Paiye connectors, the catheter is coaxially inserted into the tube sheath handle, and the tube sheath handle is connected with the catheter handle through a detachable fixing structure.
Further, the detachable fixing structure comprises a clamping fixing seat arranged at the top of the sheath handle and a catheter handle clamping buckle fixedly connected to the catheter handle and matched with the clamping fixing seat.
Further, the sheath handle is located in front of the catheter handle, the rear end of the sheath handle is a hemispherical fixing seat, the buckle fixing seat is arranged at the top of the hemispherical fixing seat, and the front end of the catheter handle is a frustum located in the hemispherical fixing seat.
Further, the tube sheath comprises a large arc tube sheath section which is in coaxial clearance fit with the catheter and small arc tube sheath sections which are fixedly connected to the end faces of the left side and the right side of the large arc tube sheath section and are parallel to the axial direction of the large arc tube sheath section in the axial direction.
The beneficial effects of the invention are as follows: the ureteral sheath is designed into a special-shaped sheath structure consisting of a large arc tube sheath section and a small arc tube sheath section, the ureteral sheath can be used as a surgical instrument after the ureteral sheath is arranged, the ureteral sheath is matched with a ureteroscope to penetrate into an endoscope, a holmium laser and other instruments are matched through a water inlet and instrument channel interface to carry out stone breaking and cleaning operation, after the stone breaking operation is finished, fine broken stone falls off from an affected part through the lateral flushing channel of a catheter cap and the action of a water outlet on the side of the catheter cap, and is discharged along with backwater through the small arc tube sheath section of the special-shaped sheath tube, so that the broken stone discharging operation under the condition of not exiting the ureteral endoscope tube is realized.
Drawings
FIG. 1 is a perspective view of a combination structure of a ureteroscope catheter and a ureteral sheath according to the present invention;
FIG. 2 is an axial cross-sectional view of a ureteroscope catheter and ureteral sheath according to the present invention;
FIG. 3 is a second axial cross-sectional view of a ureteroscope catheter and ureteral sheath according to the present invention;
Fig. 4 is a perspective view of a ureteroscope catheter with a catheter cap in accordance with the present invention;
FIG. 5 is a radial cross-sectional view of a catheter in accordance with the present invention;
FIG. 6 is a perspective view of a side-flushable catheter cap of the present invention;
FIG. 7 is a top view of a side-flushable catheter cap of the present invention;
FIG. 8 is a cross-sectional view of G-G of FIG. 7;
FIG. 9 is a cross-sectional view H-H of FIG. 7;
FIG. 10 is a perspective view of a sheath feeding dilating tube in accordance with the present invention;
FIG. 11 is a top view of a sheath for dilating a tube in accordance with the present invention;
FIG. 12 is a front view of a sheath for dilating a tube in accordance with the present invention;
FIG. 13 is a cross-sectional view of C-C of FIG. 12;
FIG. 14 is a left side view of the intrathecal stent of the present invention;
FIG. 15 is a sectional view D-D of FIG. 14;
fig. 16 is a perspective view of a ureteral sheath of the present invention;
fig. 17 is a top view of a ureteral sheath of the present invention;
Fig. 18 is a front view of a ureteral sheath of the present invention;
FIG. 19 is a cross-sectional view A-A of FIG. 18;
Fig. 20 is a left side view of the ureteral sheath of the present invention;
FIG. 21 is a cross-sectional view B-B of FIG. 20;
Fig. 22 is a perspective view of a combined structure of a sheath feeding dilating tube and a ureteral sheath in the present invention;
fig. 23 is a top view of the combined structure of the inlet sheath expansion tube and ureteral sheath in the present invention;
fig. 24 is a front view of the combined structure of the inlet sheath expansion tube and ureteral sheath in the present invention;
FIG. 25 is a cross-sectional view E-E of FIG. 24;
Fig. 26 is a left side view of the combined structure of the inlet sheath dilator tube and ureteral sheath according to the present invention;
FIG. 27 is a cross-sectional view of F-F in FIG. 26;
wherein, 101-a catheter handle, 102-a catheter, 103-a water inlet channel and an appliance channel, 104-a water inlet and appliance connector, 105-a catheter image lighting device channel, 106-a catheter image lighting device connector, 107-a side water outlet channel, 108-a side water outlet channel joint, 109-a cylindrical sleeve section, 110-a solid cylindrical section, 111-an axial flushing channel, 112-a side flushing channel, 113-a conduit cap image channel, 114-a conduit cap side water outlet, 115-a conduit handle buckle;
201-a tube sheath (201.1-a large arc tube sheath section, 201.2-a small arc tube sheath section), 202-a stone-discharging and liquid-discharging joint, 203-a tube sheath handle, 204-a buckle fixing seat;
301-expansion tube, 302-expansion tube handle, 303-guide wire channel, 304-guide boss, 305-water injection channel, 306-water injection joint, 307-expansion tube handle buckle, 308-expansion tube image lighting device channel, 309-expansion tube image lighting device joint, 310-guide wire joint.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
The combination ureteroscope catheter and ureteroscope sheath structure shown in fig. 1-21 includes a sheath 201 and a catheter 102 coaxially inserted into the sheath 201.
One end of the tube sheath 201 is coaxially fixed in the tube sheath handle 203, the side part of the tube sheath handle 203 is connected with a calculus removing and liquid draining joint 202 communicated with the tube sheath 201, the catheter 102 is coaxially inserted into the tube sheath handle 203, the tube sheath 201 comprises a large circular arc tube sheath section 201.1 which is coaxially and clearance fit with the catheter 102, and small circular arc tube sheath sections 201.2 which are fixedly connected to the left side end face and the right side end face of the large circular arc tube sheath section 201.1 and are axially parallel to the large circular arc tube sheath section 201.1, and the small circular arc tube sheath sections 201.2 are return water and calculus removing channels.
One end of a catheter 102 is coaxially fixed in a catheter handle 101, a water inlet and instrument channel 103 and a catheter image lighting device channel 105 are axially arranged in the catheter 102, and the catheter handle 101 is provided with a water inlet and instrument connector 104 communicated with the water inlet and instrument channel 103 and a catheter image lighting device connector 106 communicated with the catheter image lighting device channel 105.
The other end of the conduit 102 is fixed with a conduit cap, the conduit cap comprises a cylindrical sleeve section 109 and a solid cylindrical section 110 coaxial with the cylindrical sleeve section 109, the guide structure comprises an axial flushing channel 111 arranged in the solid cylindrical section 110, a lateral flushing channel 112 is arranged between the axial flushing channel 111 and the outer wall of the solid cylindrical section 110, and an included angle between the axial flushing channel 111 and the lateral flushing channel 112 is an acute angle. A catheter cap image channel 113 coaxially communicating with the catheter image illuminator channel 105 is provided in the solid cylindrical section 110 along its axial direction.
The outer wall of the cylindrical sleeve section 109 is provided with a conduit cap side water outlet 114, a side water outlet channel 107 communicated with the conduit cap side water outlet 114 is axially arranged in the conduit 102, and a side water outlet channel joint 108 communicated with the side water outlet channel 107 is arranged on the conduit handle 101.
The sheath handle 203 and the catheter handle 101 are axially and fixedly connected through a detachable fixing structure: comprises a clamping fixing seat 204 arranged at the top of the sheath handle 203 and a catheter handle clamping buckle 115 fixedly connected to the catheter handle 101 and matched with the clamping fixing seat 204.
As shown in fig. 1 to 27, in the ureteroscope operation, three components of the expansion tube 301, the tube sheath 201 and the ureteroscope catheter (a fixed structure integrated with the catheter cap) designed by the present invention are required. The dilating tube 301 and the sheath 201 are fixed to form an upper sheath assembly, and the ureteroscope catheter and the sheath 201 are fixed to form a uretero-operation assembly.
The structure of the upper sheath assembly includes a sheath 201 and an expansion tube 301 coaxially inserted into the sheath 201. The tube sheath 201 comprises a large circular arc tube sheath section 201.1 which is in coaxial clearance fit with the expansion tube 301, and small circular arc tube sheath sections 201.2 which are fixedly connected to the left side end face and the right side end face of the large circular arc tube sheath section 201.1 and have the axial direction parallel to the axial direction of the large circular arc tube sheath section 201.1, one end of the tube sheath 201 is coaxially fixed in the tube sheath handle 203, and the side part of the tube sheath handle 203 is provided with a calculus removing liquid discharging joint 202 which is communicated with the tube sheath 201. One end of the expansion tube 301 is coaxially fixed in the expansion tube handle 302, a guide wire channel 303, an expansion tube image lighting device channel 308 and a water injection channel 305 are axially arranged in the expansion tube 301, an expansion tube image lighting device connector 309 communicated with the expansion tube image lighting device channel 308, a guide wire connector 310 communicated with the guide wire channel and a water injection connector 306 communicated with the water injection channel 305 are arranged on the expansion tube handle 302, and a guide boss 304 is coaxially fixed on the expansion tube 301. The small circular arc tube sheath section 201.2 and the guide boss 304 are matched to coaxially guide the expansion tube 301 into the sheath 201. The sheath handle 203 and the expansion tube handle 302 are axially and fixedly connected through a detachable fixing structure: comprises a buckle fixing seat 204 arranged at the top of the sheath handle 203 and an expansion pipe buckle 307 which is fixedly connected to the expansion pipe handle 302 and matched with the buckle fixing seat 204.
The ureteral surgical assembly includes a sheath 201 and a catheter 102 coaxially inserted within the sheath 201. One end of the tube sheath 201 is coaxially fixed in the tube sheath handle 203, the side part of the tube sheath handle 203 is connected with a calculus removing and liquid draining joint 202 communicated with the tube sheath 201, the catheter 102 is coaxially inserted into the tube sheath handle 203, the tube sheath 201 comprises a large circular arc tube sheath section 201.1 which is coaxially and clearance fit with the catheter 102, and small circular arc tube sheath sections 201.2 which are fixedly connected to the left side end face and the right side end face of the large circular arc tube sheath section 201.1 and are axially parallel to the large circular arc tube sheath section 201.1, and the small circular arc tube sheath sections 201.2 are return water and calculus removing channels. One end of a catheter 102 is coaxially fixed in a catheter handle 101, a water inlet and instrument channel 103 and a catheter image lighting device channel 105 are axially arranged in the catheter 102, and the catheter handle 101 is provided with a water inlet and instrument connector 104 communicated with the water inlet and instrument channel 103 and a catheter image lighting device connector 106 communicated with the catheter image lighting device channel 105. The other end of the conduit 102 is fixed with a conduit cap, the conduit cap comprises a cylindrical sleeve section 109 and a solid cylindrical section 110 coaxial with the cylindrical sleeve section 109, the guide structure comprises an axial flushing channel 111 arranged in the solid cylindrical section 110, a lateral flushing channel 112 is arranged between the axial flushing channel 111 and the outer wall of the solid cylindrical section 110, and an included angle between the axial flushing channel 111 and the lateral flushing channel 112 is an acute angle. A catheter cap image channel 113 coaxially communicating with the catheter image illuminator channel 105 is provided in the solid cylindrical section 110 along its axial direction. The outer wall of the cylindrical sleeve section 109 is provided with a conduit cap side water outlet 114, a side water outlet channel 107 communicated with the conduit cap side water outlet 114 is axially arranged in the conduit 102, and a side water outlet channel joint 108 communicated with the side water outlet channel 107 is arranged on the conduit handle 101. The sheath handle 203 and the catheter handle 101 are also fixedly connected axially through a detachable fixing structure: comprises a clamping fixing seat 204 arranged at the top of the sheath handle 203 and a catheter handle clamping buckle 115 fixedly connected to the catheter handle 101 and matched with the clamping fixing seat 204.
The application method of the invention is as follows: in ureteroscope operation, fix the expansion pipe 301 and the pipe sheath 201 into an organic whole through expansion pipe buckle 307 and buckle fixing base 204, insert the endoscope into expansion pipe image lighting device passageway 308 of expansion pipe 301 through expansion pipe image lighting device connector 309, make up into visual ureteroscope working sheath structure, then insert the seal wire into seal wire passageway 303, the combination of expansion pipe 301 and pipe sheath 201 is led into the operation position through the seal wire, can observe the condition of ureter in real time in the process of the combination upper sheath of expansion pipe 301 and pipe sheath 201, can be through water injection joint 306 and water injection passageway 305 in real time in order to dash out the ureter when encountering resistance, make pipe sheath 201 and expansion pipe 301 accurately reach the operation position through the position of real time observation adjustment seal wire and pipe sheath 201, release the connection between expansion pipe buckle 307 and the buckle fixing base 204, withdraw the expansion pipe 301, insert the pipe 101 into pipe sheath 201, fix the pipe handle 101 and pipe sheath handle 203 into an organic whole through pipe handle buckle 115 and buckle fixing base 204, then carry out conventional ureteroscope operation: the endoscope is inserted into the catheter image lighting device channel 105 to observe the operation position, the operation instrument (holmium laser) breaks up the stones in the renal pelvis and the renal calyx through the water inlet and instrument channel 103, water is injected into the stone points through the water inlet and instrument channel 103 and the lateral water outlet channel 107, the stone discharge liquid discharge joint 202 is connected with a negative pressure machine, when the endoscope observes the stones, the negative pressure machine is started, the stones are sucked out of the body through the small arc tube sheath section 201.1, or the stones are naturally taken out by backwater through the stone discharge liquid discharge joint 202 (the negative pressure suction is not connected).
The structure of the expansion tube 301 and the tube sheath 201 designed by the invention can lead the catheter 102 to accurately reach the operation part, and the ureter operation is carried out by matching with the operation instrument, the operation is convenient, the operation position is accurate, meanwhile, due to the special design of the structure of the expansion tube 301 and the shape of the tube sheath 201, after the expansion tube 301 is sheathed, the small circular arc tube sheath section 201.2 can be used as a negative pressure stone discharging channel (or a backwater natural stone discharging channel), the stone discharging can be realized without the need of withdrawing the catheter 102 from the tube sheath 201, meanwhile, the lateral flushing channel 112 gives the impact force of the broken stone moving towards the suction and discharge direction, the broken stone can be more easily separated from the stone point, the flushing and discharging of the broken stone are more thorough, the bleeding amount of a patient is reduced, the operation pain of the patient is reduced, and the operation efficiency and the success rate of the operation are improved.
The above description is only of the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.