Ureteroscopic sheath-assisted insertion device and method of use thereof

Abstract

The present invention relates to a ureteral soft endoscope sheath auxiliary placement device, comprising a main body tube and a cap-shaped connector; an annular airbag is provided on the outside of the main body tube, a first channel is provided inside the main body tube, an airbag catheter is provided in the first channel, and a first connecting portion is provided at the end of the external end; the cap-shaped connector is provided with a second connecting portion; the cap-shaped connector is provided with a through hole for inserting the soft endoscope sheath; and the cap-shaped connector is also provided with an inflation interface. The present invention inserts the main body tube, and then connects the main body tube and the cap-shaped connector, so that the annular airbag fills the ureter, and then inserts the soft endoscope sheath and the soft endoscope core into the first channel from the through hole, and connects an air valve to the inflation interface, so that the first channel forms a sealed state with the inside of the ureter, and then uses the air valve to inflate, and continues to insert the soft endoscope sheath and the soft endoscope core into the ureter, and finally the main body tube and the soft endoscope core can be taken out to complete the insertion of the soft endoscope sheath.

Description

Technical Field

[0001] The invention relates to the technical field of ureteroscope surgical treatment, and in particular to a ureteroscope sheath auxiliary insertion device and a use method thereof. Background Art

[0002] Currently, when a soft endoscope or sheath is inserted into the ureter, the inner wall of the ureter is in a state of contraction and collapse, which is not conducive to the insertion of the soft endoscope and sheath, and aggravates the damage of the soft endoscope and sheath to the inner wall of the ureter.

[0003] The ureter has the property of being fully and non-damagedly expanded by liquid and gas from the inside. When ureteral stones cause acute obstructive renal colic, B-ultrasound and CT scans show that the ureter is significantly dilated, and this property is intuitively displayed at this time. Combining the above two points, it is necessary and feasible to insert a ureteroscope (sheath) when the ureter is filled and expanded. Summary of the invention

[0004] Based on this, the purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and to provide a ureteroscope sheath-assisted insertion device and a method for using the same.

[0005] A ureteroscope sheath-assisted insertion device comprises a main body tube and a cap-shaped connecting piece;

[0006] The main body tube comprises an inner end and an outer end; an annular airbag is arranged on the outer front side of the inner end, a first channel is arranged in the main body tube, an airbag catheter is arranged in the first channel, one end of the airbag catheter is connected with the annular airbag, and the other end of the airbag catheter passes through the side wall of the outer end; a first connecting portion is arranged at the end of the outer end;

[0007] The cap-shaped connector is provided with a second connecting portion; the first connecting portion and the second connecting portion are detachably connected; the cap-shaped connector is provided with a through hole for inserting the soft mirror sheath, the through hole is connected to the first channel, and a gap is provided between the soft mirror sheath and the first channel; the cap-shaped connector is also provided with an inflation interface, and the inflation interface is connected to the first channel.

[0008] Furthermore, the annular airbag is arranged around the outer side surface of the inner end of the body.

[0009] Furthermore, the length of the annular airbag is consistent with the length of the bladder section of the ureter.

[0010] Furthermore, it also includes a core body, the front end of which is round and blunt; the core body can be inserted into the first channel.

[0011] Furthermore, the outer diameter of the core is consistent with the inner diameter of the first channel.

[0012] Furthermore, it also includes an annular rubber sleeve; the annular rubber sleeve is arranged on the through hole; the outer side of the soft mirror sheath is in contact with the inner side of the annular rubber sleeve; the annular rubber sleeve can be inserted into the soft mirror sheath and also has a sealing function.

[0013] Furthermore, it also includes a connecting tube; the output end of the connecting tube is connected to the other end of the balloon catheter; the input end of the connecting tube includes an inflation port and a suction port.

[0014] Furthermore, it also includes a soft mirror sheath, a hydrostatic pressure measuring device, a negative pressure tube and an air pump; the soft mirror sheath is provided with a pressure measuring channel and a negative pressure channel; the hydrostatic pressure measuring device is connected to the pressure measuring channel; and the two ends of the negative pressure tube are respectively connected to the negative pressure channel and the air pump.

[0015] The method for using the ureteroscope sheath auxiliary placement device is to place the ureteroscope sheath using the ureteroscope sheath auxiliary placement device, comprising the following steps:

[0016] Step 1: Insert the guide wire or guide rod into the ureter, about 15 cm into the ureter;

[0017] Step 2: insert the core body into the first channel of the main tube, and insert the core body and the main tube into the ureter along the guide wire or guide rod, so that the annular air bag at the inner end of the main tube is located in the ureteral bladder segment; then pull out the guide wire or guide rod, and then pull out the core body;

[0018] Step 3: Inject 2 ml of gas into the balloon catheter to fill the annular balloon and expand the corresponding position of the ureter; then thread the cap-shaped connector to the main tube through the first connecting part and the second connecting part; connect the inflation interface of the cap-shaped connector to the air valve, and set the air valve to a suitable pressure;

[0019] Step 4: insert the soft endoscope sheath and the soft endoscope core into the first channel through the through hole of the cap-shaped connector; cover the joint and separation of the soft endoscope sheath and the soft endoscope core with an elastic rubber ring, and then open the air valve to maintain the maximum pressure at a safe set value and keep the entire ureter in an expanded state; safely and quickly insert the soft endoscope sheath into the first channel under X-ray guidance;

[0020] Step 5: After the soft mirror sheath reaches the appropriate position, close the air valve; remove the cap-shaped connector, extract the gas in the annular air bag, hold up the soft mirror sheath and pull out the main tube, and finally pull out the soft mirror core.

[0021] Furthermore, before step 1, the ureteral wall is expanded by using the existing ureteral expansion tube kit so that the main tube can be easily accommodated in the ureteral wall, and the ureteral expansion tube kit is quickly withdrawn after expanding the ureter.

[0022] The method also includes step six, connecting a hydrostatic pressure measuring device, a negative pressure tube and an air pump to the soft endoscope sheath.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The ureteroscope sheath auxiliary insertion device and the use method thereof described in the present invention insert a main body tube, and then connect the main body tube and a cap-shaped connector to fill the ureter with an annular airbag, then insert the soft mirror sheath and the soft mirror core into the first channel from the through hole, and connect an air valve to the inflation interface to form a sealed state between the first channel and the inside of the ureter, and then inflate with the air valve, and continue to insert the soft mirror sheath and the soft mirror core into the ureter, and finally take out the main body tube and the soft mirror core to complete the insertion of the soft mirror sheath; because the annular airbag fills the ureter, the gas in the annular airbag is firstly extracted before taking out the main body tube, and at this time a gap is formed between the ureter and the outer wall of the main body tube, so that the main body tube is conveniently taken out.

[0025] The core body is provided so that the main tube can be better inserted into the ureter; the front end of the core body is rounded and blunted, which is convenient for insertion into the main tube, and the end is rounded and blunted to reduce its damage to the inner wall of the main tube.

[0026] By setting up a hydrostatic pressure measuring device, the pressure in the kidney during the operation can be measured, and the pressure can be adjusted when it is too high to prevent excessive pressure from damaging the kidney. More specifically, the constant pressure pump can be a water injection pump or liquid injection pump with controllable and settable pressure. By setting up a negative pressure tube and a vacuum pump, the water injected into the kidney can be sucked out together with the stones broken into pieces by the holmium laser, which can enhance the fluid circulation in the kidney and maintain the effect of low pressure in the kidney.

[0027] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the main tube of the present invention;

[0029] Figure 2 It is a schematic diagram of the internal structure of the main body tube of the present invention;

[0030] Figure 3 It is a schematic diagram of the connection between the main body tube, the cap-shaped connector, and the soft endoscope sheath of the present invention;

[0031] Figure 4 It is a schematic cross-sectional view of the connection between the main body tube, the cap-shaped connector, and the soft endoscope sheath of the present invention;

[0032] Figure 5 It is a schematic diagram of the connection between the main body tube and the core body of the present invention;

[0033] Figure 6 The figure is a schematic diagram of the structure of the soft endoscope sheath of the present invention.

[0034] In the figure: 10, main body tube; 11, inner end; 12, outer end; 13, annular airbag; 131, airbag catheter; 14, first channel; 15, first connecting part; 20, cap-shaped connecting piece; 21, second connecting part; 22, through hole; 23, inflation interface; 30, core body; 40, annular rubber sleeve; 50, connecting tube; 51, inflation port; 52, exhaust port; 60, soft endoscope sheath; 61, pressure measuring channel; 62, negative pressure channel; 70, hydrostatic pressure measuring device; 80, negative pressure tube; 90, vacuum pump. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0036] It should be understood that, in the description of the present application, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application 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 on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, that is, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, unless otherwise specified, "multiple" means two or more.

[0037] It should be noted that, in the description of this application, unless otherwise clearly specified and limited, the terms "disposed", "connected", "connected", and "hollow" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] See also Figures 1 to 6 The ureteroscope sheath 60 auxiliary insertion device of this embodiment includes a main tube 10 and a cap-shaped connecting piece 20;

[0039] Specifically, the main body tube 10 includes an internal end 11 and an external end 12; an annular airbag 13 is provided on the front outer side of the internal end 11, a first channel 14 is provided in the main body tube 10, an airbag catheter 131 is provided in the first channel 14, one end of the airbag catheter 131 is connected to the annular airbag 13, and the other end of the airbag catheter 131 passes through the side wall of the external end 12; a first connecting portion 15 is provided at the end of the external end 12;

[0040] Specifically, the cap-shaped connector 20 is provided with a second connecting portion 21; the first connecting portion 15 and the second connecting portion 21 are detachably connected, for example, the first connecting portion 15 and the second connecting portion 21 are respectively provided with an external thread and an internal thread to realize a threaded connection between the two. The detachable connection belongs to the prior art and will not be elaborated here; the cap-shaped connector 20 is provided with a through hole 22 for inserting the soft mirror sheath 60, and the through hole 22 is connected to the first channel 14, and a gap is provided between the soft mirror sheath 60 and the first channel 14; the cap-shaped connector 20 is also provided with an inflation interface 23, and the inflation interface 23 is connected to the first channel 14.

[0041] More specifically, the annular airbag 13 is disposed around the outer side surface of the inner end 11 .

[0042] More specifically, the length of the annular airbag 13 is consistent with the length of the bladder section of the ureter.

[0043] More specifically, it also includes a core body 30 , the front end of which is round and blunt; the core body 30 can be inserted into the first channel 14 ; the outer diameter of the core body 30 is consistent with the inner diameter of the first channel 14 .

[0044] More specifically, it also includes an annular rubber sleeve 40; the annular rubber sleeve 40 is arranged on the through hole 22; the outer side of the soft mirror sheath 60 is in contact with the inner side of the annular rubber sleeve 40; the annular rubber sleeve 40 can be inserted into the soft mirror sheath 60 and also has a sealing function.

[0045] More specifically, it also includes a connecting tube 50 ; the output end of the connecting tube 50 is connected to the other end of the balloon catheter 131 ; the input end of the connecting tube 50 includes an inflation port 51 and an exhaust port 52 .

[0046] More specifically, it also includes a soft mirror sheath 60, a hydrostatic pressure measuring device 70, a negative pressure tube 80 and an air pump 90; the soft mirror sheath 60 is provided with a pressure measuring channel 61 and a negative pressure channel 62; the hydrostatic pressure measuring device 70 is connected to the pressure measuring channel 61; the two ends of the negative pressure tube 80 are respectively connected to the negative pressure channel 62 and the air pump 90.

[0047] The method for using the ureteroscope sheath 60 auxiliary placement device of this embodiment is as follows: using the ureteroscope sheath 60 auxiliary placement device to place the ureteroscope sheath 60, including the following steps:

[0048] Step 1: First, pre-expand the lower part of the ureter with the existing ureteral dilation tube kit (not shown) so that the main tube can be easily accommodated in the ureteral wall. Otherwise, the ureteral diameter is relatively small and it is difficult to smoothly insert it into the space of the ureteroscope sheath-assisted insertion device without pre-expanding. The ureteral dilation tube kit is quickly withdrawn after dilating the ureter. Then, a guide wire (not shown) or a guide rod (not shown) is inserted into the ureter, and it is only necessary to insert it into the ureter about 15 cm.

[0049] Step 2: insert the core body 30 into the first channel 14 of the main tube 10, and insert the core body 30 and the main tube 10 into the ureter along the guide wire or guide rod, so that the annular air bag 13 at the inner end 11 of the main tube 10 is located in the bladder section of the ureter; then pull out the guide wire or guide rod, and then pull out the core body 30;

[0050] Step 3: Inject 2 ml of gas into the balloon catheter 131 to fill the annular balloon 13 and expand the corresponding position of the ureter; then thread the cap-shaped connector 20 to the main tube 10 through the first connecting portion 15 and the second connecting portion 21; connect the inflation interface 23 of the cap-shaped connector 20 to the air valve, and set the air valve to a suitable pressure;

[0051] Step 4: insert the soft endoscope sheath 60 and the soft endoscope core into the first channel 14 from the through hole 22 of the cap-shaped connector 20; put the elastic rubber ring sleeve on the joint and separation of the soft endoscope sheath 60 and the soft endoscope core, and then open the air valve to maintain the maximum pressure at a safe set value and keep the entire ureter in an expanded state; safely and quickly insert the soft endoscope sheath 60 into the first channel 14 under the guidance of X-ray;

[0052] Step 5: After the soft mirror sheath 60 reaches the appropriate position, close the air valve; remove the cap-shaped connector 20, extract the gas in the annular airbag 13, hold the soft mirror sheath 60 and pull out the main tube 10, and finally pull out the soft mirror core.

[0053] Step six, connect the hydrostatic pressure measuring device 70 , the negative pressure tube 80 and the vacuum pump 90 to the soft endoscope sheath 60 .

[0054] Compared with the prior art, the present invention has the following beneficial effects:

[0055] The present invention inserts a main body tube, and then connects the main body tube and a cap-shaped connector, so that the annular airbag fills the ureter, and then inserts a soft endoscope sheath and a soft endoscope core into the first channel from the through hole, and connects an air valve to the inflation interface, so that the first channel and the inside of the ureter form a sealed state, and then inflates the air using the air valve, and continues to insert the soft endoscope sheath and the soft endoscope core into the ureter, and finally the main body tube and the soft endoscope core can be taken out to complete the insertion of the soft endoscope sheath; because the annular airbag fills the ureter, before taking out the main body tube, the gas in the annular airbag is firstly extracted, and at this time, a gap is formed between the ureter and the outer wall of the main body tube, so that the main body tube is conveniently taken out.

[0056] The core body is provided so that the main tube can be better inserted into the ureter; the front end of the core body is rounded and blunted, which is convenient for insertion into the main tube, and the end is rounded and blunted to reduce its damage to the inner wall of the main tube.

[0057] By setting up a hydrostatic pressure measuring device, the pressure in the kidney during the operation can be measured, and the pressure can be adjusted when it is too high to prevent excessive pressure from damaging the kidney. More specifically, the constant pressure pump can be a water injection pump or liquid injection pump with controllable and settable pressure. By setting up a negative pressure tube and a vacuum pump, the water injected into the kidney can be sucked out together with the stones broken into pieces by the holmium laser, which can enhance the fluid circulation in the kidney and maintain the effect of low pressure in the kidney.

[0058] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A ureteroscope sheath-assisted insertion device, characterized in that: include: A main body tube, the main body tube comprising an inner end and an outer end; an annular airbag is arranged on the outer front side of the inner end; a first channel is arranged in the main body tube, an airbag catheter is arranged in the first channel, one end of the airbag catheter is connected with the annular airbag, and the other end of the airbag catheter passes through the side wall of the outer end; a first connecting portion is arranged at the end of the outer end; A cap-shaped connector, wherein the cap-shaped connector is provided with a second connecting portion; the first connecting portion and the second connecting portion are detachably connected; the cap-shaped connector is provided with a through hole for inserting a soft mirror sheath, the through hole is connected to the first channel, and a gap is provided between the soft mirror sheath and the first channel; the cap-shaped connector is also provided with an inflation interface, and the inflation interface is connected to the first channel.

2. The ureteroscope sheath-assisted insertion device according to claim 1, characterized in that: The annular airbag is arranged around the outer side surface of the inner end of the body.

3. The ureteroscope sheath-assisted insertion device according to claim 2, characterized in that: The length of the annular air bag is consistent with the length of the bladder section of the ureter.

4. The ureteroscope sheath-assisted insertion device according to claim 1, characterized in that: It also includes a core body, the front end of which is round and blunt; the core body can be inserted into the first channel.

5. The ureteroscope sheath-assisted insertion device according to claim 4, characterized in that: The outer diameter of the core is consistent with the inner diameter of the first channel.

6. The ureteroscope sheath-assisted insertion device according to claim 1, characterized in that: It also includes an annular rubber sleeve; the annular rubber sleeve is arranged on the through hole; the outer side surface of the soft mirror sheath is in contact with the inner side surface of the annular rubber sleeve.

7. The ureteroscope sheath-assisted insertion device according to claim 1, characterized in that: It also includes a connecting tube; the output end of the connecting tube is connected to the other end of the balloon catheter; the input end of the connecting tube includes an inflation port and a suction port.

8. The ureteroscope sheath-assisted insertion device according to claim 1, characterized in that: It also includes a soft mirror sheath, a hydrostatic pressure measuring device, a negative pressure tube and an air pump; the soft mirror sheath is provided with a pressure measuring channel and a negative pressure channel; the hydrostatic pressure measuring device is connected to the pressure measuring channel; and the two ends of the negative pressure tube are respectively connected to the negative pressure channel and the air pump.

9. A method for using a ureteroscope sheath-assisted insertion device, characterized in that: Using the ureteroscope sheath auxiliary insertion device according to any one of claims 1 to 8 to insert the ureteroscope sheath comprises the following steps: Step 1: Place the guide wire or guide rod into the ureter; Step 2: insert the core body into the first channel of the main tube, and insert the core body and the main tube into the ureter along the guide wire or guide rod, so that the annular air bag at the inner end of the main tube is located in the ureteral bladder segment; then pull out the guide wire or guide rod, and then pull out the core body; Step 3: Inject 2 ml of gas into the balloon catheter to fill the annular balloon and expand the corresponding position of the ureter; then thread the cap-shaped connector to the main tube through the first connecting part and the second connecting part; connect the inflation interface of the cap-shaped connector to the air valve, and set the air valve to a suitable pressure; Step 4: insert the soft endoscope sheath and the soft endoscope core into the first channel through the through hole of the cap-shaped connector; cover the joint and separation of the soft endoscope sheath and the soft endoscope core with an elastic rubber ring, and then open the air valve to maintain the maximum pressure at a safe set value and keep the entire ureter in an expanded state; safely and quickly insert the soft endoscope sheath into the first channel under X-ray guidance; Step 5: After the soft mirror sheath reaches the appropriate position, close the air valve; remove the cap-shaped connector, extract the gas in the annular air bag, hold up the soft mirror sheath and pull out the main tube, and finally pull out the soft mirror core.

10. The method for using the ureteroscope sheath-assisted insertion device according to claim 9, characterized in that: Before step 1, the ureteral wall is expanded by using the existing ureteral expansion tube kit so that the main tube can be easily accommodated in the ureteral wall. The ureteral expansion tube kit is quickly withdrawn after expanding the ureter.

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