CN222075147U - Medical endoscope and safe-placement-type endoscope device - Google Patents

Abstract

The patent provides a medical endoscope and a safe imbedding type endoscope device, which relates to the field of medical appliances, wherein the top end of the head of an endoscope main body is coated with an expandable bag body, the bag body consists of a bag body connecting part and a bag body free part, the inner surface area of the bag body free part is connected with a hollow bag body extension pipe, the bag body extension pipe is provided with an inner opening of the bag body extension pipe and an outer opening of the bag body extension pipe, the bag body extension pipe can directly penetrate an endoscope working channel or with the assistance of a guide wire, the tail end of the bag body extension pipe penetrates out of the outer opening of the endoscope working channel, the juncture of the bag body free part and the bag body connecting part outwards extends out of a flexible bag body shielding part, when the endoscope main body is blocked in a life body natural cavity channel, fluid can be filled into the bag body cavity through a filling gap to expand the bag body free part, the tissue of the natural cavity channel is radially and flexibly expanded, the endoscope main body can conveniently move in the natural cavity channel after expansion, and the mucous membrane shearing damage in the endoscope process is obviously reduced.

Description

Medical endoscope and safe-placement-type endoscope device

Technical Field

The utility model relates to a medical endoscope and a safe imbedding type endoscope device, belonging to the technical field of medical appliance products.

Background

The existing medical endoscope is divided into a hard endoscope with an elongated endoscope body which cannot or is not easy to bend, a soft endoscope with an easily-bent endoscope body, and a combined endoscope with the soft endoscope sleeved in the hard endoscope, wherein the hard endoscope has high strength and is easy to enter a natural cavity channel or a pathological sinus channel of a living body, and the soft endoscope has the defect of difficult implantation, but is more elongated and softer, can contact the natural cavity channel for a longer time in operation and has less damage; for example, a transurethral laser kidney stone operation is generally performed by 1, inserting a hard lens into a bladder and a ureter from the urethra, 2, inserting a guide wire into a renal pelvis through a working channel of the hard lens, 3, withdrawing the hard lens, leaving the guide wire in the urinary tract, 4, inserting a ureter sheath and a sheath core positioned in the sheath through the guide wire, 5, withdrawing the sheath core positioned in the ureter sheath, 6, inserting a soft lens into the ureter sheath, opening the working channel at the head of the soft lens to bear functions such as optical fiber stone breaking, cooling flushing, stone taking-up and the like, putting the soft lens in a plurality of steps, and having complicated operation, and ensuring that the hard edge part of the head of an endoscope assembly is in continuous dynamic contact with the mucosa of the natural cavity when the hard lens and the soft lens are pushed in the natural cavity of a living body, the shearing damage is difficult to avoid, the shearing damage is more serious when encountering the narrow part of the natural cavity, even the perforation of the natural cavity is generated, and the safety protection measures in the prior art are weak and even no safety protection measures are taken, and the mucosa of the natural cavity is easy to be infected secondarily and has functional impairment after the shearing damage.

The utility model provides a medical endoscope and a safe imbedding type endoscope device, wherein an inflatable bag body structure is arranged on the head of the endoscope, the head of the endoscope is protected by an integral type sheath, the integral type sheath is synchronously imbedded, the edge of the head of a soft bag body shielding part is prevented from shearing and damaging a soft mucosa of a natural cavity channel in the whole range, when the device is propelled in the natural cavity channel to meet resistance, fluid is filled into the inner cavity of the inflatable bag body from outside to expand the radial flexible expansion natural cavity channel, the inflation is relieved, the bag body is restored, the expanded natural cavity channel is not restored to a state at the moment, the resistance is minimum when the device is continuously propelled, and the value is particularly outstanding when the natural cavity channel is met, so that complicated steps are eliminated while the safety of a natural cavity channel of a living body is fully ensured, and the operation efficiency is improved.

Disclosure of Invention

The purpose of the utility model is realized in the following way:

The medical endoscope is characterized in that an optical component is arranged on an elongated endoscope main body, the endoscope main body is provided with a working channel penetrating through the head and the tail, the working channel is provided with an opening in the working channel which enters the body when in use and an opening outside the working channel which is positioned outside the body when in use, the top end of the head of the endoscope main body is coated with an inflatable bag body, the bag body consists of a bag body connecting part and a bag body free part, the bag body connecting part is connected with the outer surface of the head of the endoscope main body in a tubular shape, the bag body free part is a bag body inflatable part, a gap between the bag body free part and the top end of the head of the endoscope main body forms a bag body inner cavity, the maximum outer diameter of the inflated bag body free part is at least larger than the outer diameter of the head of the endoscope main body, the bag body free part is transparent or at least the area corresponding to the optical component at the top end of the head of the endoscope main body is transparent, and a flexible bag body shielding part extends outwards at the juncture of the bag body free part and the bag body connecting part.

The more outstanding structure is that the inner surface area of the free part of the capsule body is connected with a hollow capsule body extension tube, the capsule body extension tube is provided with an inner opening of the capsule body extension tube positioned on the free part of the capsule body and an outer opening of the capsule body extension tube positioned outside the body when in use, the capsule body extension tube can directly penetrate into the working channel of the endoscope or with the assistance of a guide wire, the tail end of the capsule body extension tube penetrates out of the outer opening of the working channel of the endoscope, and external fluid can enter the inner cavity of the capsule body through a perfusion gap between the outer surface of the capsule body extension tube and the inner surface of the working channel to expand the free part of the capsule body.

The inner cavity of the capsule extension tube not only can be used for the passage of the guide wire to pass through and assist the guide wire to move along, but also can be used for injecting medicines including lubricating, diagnostic and therapeutic medicines and also can be used for injecting expanding, diagnostic and therapeutic gases into the natural cavity and pathology Dou Daona through the inner cavity of the capsule extension tube, the capsule extension tube moves in the working channel of the endoscope, can pull the free part of the capsule in the expanded state, promotes the resetting of the free part, controls the expansion degree and adjusts the shape of the free part of the capsule in the expanded state, so as to meet the individual operation needs of patients or doctors, and under the premise of the existence of the capsule extension tube, the external fluid filled in the free part of the capsule needs to be injected into the inner cavity of the capsule through a filling gap between the outer surface of the capsule extension tube and the inner surface of the working channel of the endoscope.

The medical endoscope comprises a balloon extension tube, a guide wire, a hollow upper thickening section, a hollow lower thickening section, a guide wire, a thickening section, a free part and a reinforcing structure, wherein the guide wire penetrates into the balloon extension tube and can enable the medical endoscope to move forwards under the guide of the guide wire or to expand along the guide wire when the free part of the balloon is filled, the guide wire can be expanded to a longer natural cavity, the free part of the balloon can be prevented from being tightly held by the guide wire when the balloon is expanded, the guide wire can be prevented from being expanded along the guide wire when the balloon is expanded, the inner cavity of the balloon extension tube and the inner opening area of the balloon extension tube are preferably in non-interference contact with the guide wire penetrating into the balloon extension tube, the periphery of the inner opening of the balloon extension tube is provided with the reinforcing structure, the reinforcing structure comprises the annular thick-wall reinforcing rib surrounding the inner opening of the balloon extension tube, the hollow upper thickening section and the hollow lower thickening section are connected with the inner opening of the balloon extension tube, the guide wire passes through the thickening section, and the free part of the balloon can not be tightly held by the free part of the inner opening area of the balloon extension tube when the balloon is expanded, and the free part of the balloon is ensured to expand along the guide wire.

The balloon body is preferably made of a compliant material, can extend forwards while flexibly and radially expanding a natural cavity, and the connection between the connecting part of the balloon body and the outer surface of the head of the endoscope body is in a cylindrical shape and is easy to separate, and after the expansion task is completed, the balloon body is taken down to expose the working channel, and other subsequent medical operations are carried out through the working channel.

The medical endoscope in the present utility model covers a soft scope in which the endoscope body is bendable and a hard scope in which the endoscope body is not bendable, and covers an electronic scope and an optical scope.

Preferably, the free part of the capsule body at the periphery of the inner opening of the extension tube of the capsule body is provided with a conical protrusion protruding to the far end, and the flexible conical protrusion is beneficial to the pushing of the endoscope in the natural cavity, so that the conical protrusion is pushed to further advance after the expansion of the capsule body, the more front natural cavity is synchronously expanded, and the extension expansion effect is achieved.

The scheme of the balloon expansion volume increasing device is that hollow nipple-shaped protrusions are arranged on the periphery of an inner opening of a balloon extension tube on a balloon free portion, and/or one or more annular folds are arranged on the balloon free portion, the nipple-shaped protrusions are helpful for extending and expanding the balloon free portion after filling, and the annular folds can obviously increase the surface area of the balloon free portion on the premise that the plane projection area of the top end of the head of an endoscope main body is unchanged, so that the volume of an expanded balloon inner cavity is increased, and the balloon expansion device is beneficial for extending and expanding along the axial direction of a natural cavity when filling and expanding a longer natural cavity.

In order to ensure the stable expansion and multiple expansion of the balloon, the wall thickness and/or the strength of the balloon connecting part of the balloon is larger than that of the balloon free part, and the balloon connecting part is prevented from being separated from the head of the endoscope main body due to the traction when the balloon free part is expanded.

In order to facilitate the operation of operators, a hollow elastic power bag is connected with the outer opening of the working channel, the elastic power bag is extruded to fill fluid in the elastic power bag into the inner cavity of the bag body so as to expand the free part of the bag body, the fluid in the inner cavity of the bag body after extrusion is released to flow back to the inner cavity of the elastic power bag, and the air in the inner cavity of the elastic power bag is usually used.

The utility model also provides a safe imbedding type endoscope device, which comprises a sheath tube and the medical endoscope, wherein the slender sheath tube main body is sleeved outside the endoscope main body, the sheath tube main body is provided with an inner opening of the sheath tube main body which enters the body when in use and an outer opening of the sheath tube main body which is positioned outside the body when in use, and in order to protect natural cavity mucosa from being sheared by sharp edges at the inner opening of the inner cavity of the sheath tube main body, a flexible bag body shielding part which can shield or cover the outer edge of the inner opening of the inner cavity of the sheath tube main body extends outwards at the junction of the bag body free part and the bag body connecting part.

Further, the flexible bag shielding part extending outwards from the junction of the bag body free part and the bag body connecting part is provided with a cylindrical flanging, the cylindrical flanging fully covers the outer edge of the inner opening of the sheath tube, the outer edge of the inner opening of the thin-wall sheath tube is sharp, the inner membrane of the cavity, which is contacted with the thin-wall sheath tube, is easy to be sheared and damaged when the flexible bag body shielding part moves forwards, the outer edge of the inner opening of the sheath tube is fully covered by the flexible bag body shielding part, the shearing damage risk is eliminated, and the dual protection effect on the mucous membrane of the natural cavity is achieved by combining the characteristic that the bag body free part moves forwards in an expanding mode.

When the endoscope body moves forward in the natural cavity of a living body and encounters resistance, fluid can be filled into the inner cavity of the capsule body through a filling gap to expand the free part of the capsule body, the tissue of the narrow part of the natural cavity is radially and flexibly expanded, the endoscope body moves forward in the natural cavity after expansion, the device releases the fastening mechanism after reaching a target position, the state of combining the lens and the sheath is released, and the endoscope body can freely rotate in the inner cavity of the sheath body or move forward and backward.

The fastening mechanism can be arranged at the tail part of the endoscope main body, can be an independent component, is connected with the tail part of the endoscope main body and the tail part of the sheath main body when in use, can move the endoscope sheath integrally, and ensures the stability of the relative positions of the capsule body, the endoscope and the sheath.

For convenient operation, the section adjacent to the opening in the sheath body is a sheath bendable section, and/or the section of the endoscope body adjacent to the opening in the working channel is an endoscope bendable section, and the bendable section ensures that the endoscope is not easy to have visual and operation dead angles in the renal pelvis and the renal calyx.

When the utility model is used in a transureteral lithotripsy system, the utility model comprises at least one of a perfusion device, a lithotripsy optical fiber, a negative pressure suction device, a pressure sensor, a temperature sensor, a calculus basket and a guide wire besides the safe imbedding type medical endoscope device.

The pressure sensor and the temperature sensor can be arranged at the position adjacent to the inner opening of the sheath tube main body, can also be arranged at the head of the endoscope main body, is convenient for monitoring the pressure and the temperature in the urinary tract during operation, ensures the operation safety, and is provided with a hydrophilic coating for reducing the friction force between the pressure sensor and the natural cavity mucosa and each component, and at least one or more of the outer surface of the free part of the capsule body, the outer surface of the endoscope main body, the inner surface of the sheath tube main body, the outer surface of the extension tube of the capsule body and the inner surface of the working channel of the endoscope.

The beneficial effects of the utility model are as follows:

1. In the natural cavity channel propelling process of the endoscope, the hard head edge of the sheath tube main body is protected by the shielding part of the flexible bag body in the whole process, so that the mucous membrane shearing damage in the endoscope placing process is obviously reduced.

2. When the endoscope is placed in a natural cavity stenosis, the balloon of the head of the endoscope body is inflated, and after the tissue at the stenosis is radially expanded, the balloon is relieved, so that the subsequent passing is facilitated.

3. The fastening mechanism enables the endoscope and the sheath tube to be synchronously propelled, so that the operation steps are reduced, and the efficiency is improved.

4. The head capsule body on the basis of visualization expands and moves forward, so that the use of a guide wire in the mirror placing process can be omitted.

5. The head capsule body under the pressure monitoring expands and expands the natural cavity, and the expansion effect is safer and more reliable.

6. When the endoscope is placed into the urethra, the head capsule body of the endoscope main body can slowly and radially expand the urethral membrane part, so that the external urethral sphincter is protected, and the occurrence of postoperative urine control disorder is avoided to the greatest extent.

7. The junction of the flexible expansion ureter and the bladder protects the valsalva sheath, and the occurrence of postoperative vesicoureter reflux is avoided to the greatest extent.

8. In the process of pushing the endoscope device along the natural cavity, medicines or developers such as lubrication, smooth muscle relaxation and the like can be injected into the natural cavity through the inner cavity of the capsule body extension tube, so that the operation safety is ensured.

The utility model remarkably simplifies the operation steps of the operation, reduces the tissue injury, greatly saves the operation time and reduces the treatment cost.

Drawings

The drawings that do not limit the utility model are as follows:

FIG. 1A is a schematic illustration of a prior art sheath, sheath core, and guidewire use;

Wherein, the part 1A-1 comprises a sheath tube, a sheath core and a guide wire which are combined together, the part 1A-2 comprises a hard endoscope which is arranged in the guide wire G to the renal pelvis P, and the part 1A-3 comprises a sheath core which is arranged in a sheath tube main body and moves upwards along the guide wire G;

FIG. 1B is a schematic view of a prior art endoscope body 1 entering a sheath body 3;

Wherein, part 1B-1 comprises an endoscope main body 1 which enters a sheath main body 3, a bendable head part 12 of the endoscope main body which protrudes from an inner opening 321 of the sheath main body, part 1B-2 comprises a head part 32 of the sheath main body which is positioned near the joint of the U-shaped renal pelvis P of the ureter, and part 1B-3 comprises a part 12 of the bendable head part of the endoscope main body which protrudes from the inner opening of the sheath main body and extends into the renal pelvis P;

FIG. 1C is a schematic view of an endoscope of example 1, wherein the head 12 of the endoscope body is covered with an inflatable balloon 2, a balloon extension tube 24 is connected with a balloon free portion 22, the balloon extension tube 24 protrudes from an outer opening 112 of a working channel of the endoscope, an outer opening 242 of the balloon extension tube can be inserted into a blocking body 243, and a cylindrical flange 232 is arranged on a balloon shielding portion 23;

FIG. 1D is a schematic view of the sheath body 3 of example 1, showing in cross-section the fastening mechanism T of the sheath tail 34;

FIG. 1E is a schematic view of the endoscope body 1 and sheath body 3 of example 1, partially cut away to show the elastic power balloon 5 connected to the balloon 2 of the endoscope body head, and the fastening mechanism T of the sheath tail 34 connected to the endoscope handle 15;

FIG. 1F is a schematic view showing a state in which two arms T1 of the sheath body tail fastening mechanism T and the fastening knob T2 are separated from each other in embodiment 1, and the endoscope body tail 14 is placed therein;

FIG. 1G is a schematic perspective view of the flexible power balloon 5 of example 1 coupled to an endoscope handle 15;

FIG. 1H is a cross-sectional view of the balloon free portion 22 of the endoscope body head 12 in an unexpanded state, with the balloon extension tube 24 positioned within the working channel 11, encountering a ureteral U stenosis N;

FIG. 1I is a schematic cross-sectional view of the balloon free portion 22 of example 1, wherein the ureter U stenoses N in FIG. 1H have been radially expanded (so N is not labeled in this figure);

FIG. 1J is a schematic cross-sectional view of the balloon free portion 22 of example 1 in an inflated state, the balloon extension lumen 240 penetrating the guidewire G, the balloon free portion 22 being inflated under the guidance of the guidewire G;

Fig. 1K, after the endoscope and sheath of example 1 are integrally advanced to the juncture of ureter U and renal pelvis P, the partial cross-section shows the separation of the clasping arm T1 and the tightening knob T2, with the endoscope body head 12 extending from sheath body head 32 into renal pelvis P;

FIG. 1L, in which the endoscope body of example 1 is withdrawn from the sheath body lumen 31 to the outside, a partial cross section shows the reverse deformation state of the shielding portion 23 of the balloon free portion;

FIG. 2A is a cross-sectional view of a distally presented nipple-like extending tapered protrusion 228 within the opening 241 region of the balloon extension 24 of example 2;

FIG. 2B is a schematic cross-sectional view of the balloon extension lumen 240 of example 2 penetrating a guidewire G;

FIG. 3A is a schematic view of the annular corrugations 227 on the balloon free portion 22, the annular thick-walled ribs 223 in the region of the opening 241 in the balloon extension 24, and the downwardly thickened section 225 of example 3;

FIG. 3B is a schematic view in partial cross-section of the lumen 240 of the balloon extension tube of example 3 penetrating a guidewire G;

FIG. 4A is a schematic view of an upward thickened section 224 of the peripheral region of the opening 241 in the balloon extension of example 4;

FIG. 4B is a schematic partial cross-sectional view of the balloon extension lumen 240 of example 4 penetrating a guidewire G;

FIG. 5A is a schematic cross-sectional view of a distally projecting nipple 226 in the peripheral region of opening 241 in balloon extension tube 24 of example 5;

FIG. 5B is a schematic cross-sectional view of the balloon extension lumen 240 of example 5 penetrating a guidewire G, with the guidewire G not being cut.

Detailed Description

The embodiments of the present utility model are not limited as follows:

example 1:

As shown in fig. 1C, a medical endoscope apparatus for safe placement, a bendable slender endoscope body 1 comprises an endoscope body head 12, an endoscope body middle 13 and an endoscope body tail 14, the endoscope body 1 is provided with a main channel 11 penetrating the head and the tail, the main channel 11 is provided with a main channel inner opening 111 which enters the body when in use and a main channel outer opening 112 which is positioned outside the body when in use, the endoscope body tail 14 is connected with an operation handle 15 for the user to operate the endoscope, and the operation handle 15 is provided with a power interface 151; the head top 121 of the endoscope main body 1 is coated with an expandable balloon 2, the balloon consists of a balloon connecting part 21 and a balloon free part 22, the balloon connecting part 21 is connected with the outer surface of the head 12 of the endoscope main body in a cylindrical shape, the balloon free part 22 is an expandable part of the balloon 2, a gap between the balloon free part 22 and the head top 121 of the endoscope main body 1 forms a balloon inner cavity 20, the maximum outer diameter of the expanded balloon free part 22 is at least larger than the outer diameter of the head 12 top area of the endoscope main body, the balloon free part 22 is transparent or at least the area corresponding to the optical component (such as fig. 1I) of the head top 121 of the endoscope main body 1 is transparent, the balloon inner cavity 20 is communicated with the working channel 11, the inner side of the balloon free part 22 is connected with a hollow balloon extension tube 24, most of the balloon extension tube 24 is positioned in the working channel 11, the inner cavity 240 of the balloon extension tube is provided with two openings, namely a balloon extension tube inner opening 241 and a balloon extension tube inner opening 242, in this example, the proximal end part of the balloon extension tube 24 can be extended out of the working channel 112 from the inner opening of the handle extension 152, and the balloon extension opening 243 can be plugged.

Because the inner opening outer edge 322 (1A-1 part in fig. 1A) of the thin-walled sheath body 3 is sharp, when the endoscope is advanced, the mucous membrane in the natural cavity is easily sheared and damaged, in order to protect the mucous membrane in the natural cavity, the juncture of the free part 22 of the capsule and the connecting part 21 of the capsule outwards extends to form a flexible capsule shielding part 23 which can shield or cover the inner opening outer edge 322 of the sheath body 3, the horizontal wings 231 of the flexible capsule shielding part 23 are connected with cylindrical flanges 232, the cylindrical flanges 232 more thoroughly cover the inner opening outer edge 322 of the sheath, fig. 1E shows that the flexible shielding part 23 shields the inner opening outer edge 322 of the sheath body 3, the upper opening of the endoscope sheath gap 130 is blocked, the mucous membrane of the ureter U is not sheared and damaged when the endoscope is advanced in the ureter U, and the characteristics that the free part 22 of the combined capsule can be expanded to advance are achieved.

As shown in fig. 1D, a sheath (herein, "sheath" and "sheath body" are described equally) matched with an endoscope, when in use, an elongated sheath body 3 is sleeved outside the endoscope body 1, the sheath body 3 comprises a sheath body head 32, a sheath body middle part 33 and a sheath body tail 34, the sheath body is provided with a sheath body inner opening 311 which enters the body when in use and a sheath body outer opening 312 and a sheath body side branch opening 313 which are positioned outside the body when in use, an adjusting button 341 is arranged on the sheath body side branch, and when the sheath body side branch opening is connected with a negative pressure suction device (not shown), the adjusting button 341 is used for adjusting whether the sheath side branch inner cavity 340 is communicated with the outside; the outer opening 312 of the sheath tube body is provided with a fastening mechanism T capable of being tightly connected with the tail 14 of the endoscope body, in this embodiment, the fastening mechanism T consists of an arc-shaped lamellar cohesion arm T1 and a hollow fastening knob T2, the fastening knob T2 is provided with a circular knob outer opening T22, the number of the cohesion arm T1 is two, the cohesion arm T1 is connected with the tail 34 of the sheath tube body through a base T12 on the fastening arm T1, after the internal thread T21 of the fastening knob T2 is matched with the external thread T11 of the cohesion arm, the two cohesion arms T1 move radially towards the axis L, the endoscope body tail 14 part (such as fig. 1E) positioned in the cohesion arm is clamped, so that the endoscope sheath (the endoscope sheath tube is referred to as an endoscope) can be synchronously pushed in this document, the two cohesion arms T1 are separated from the fastening knob T2, and the clamp of the endoscope body tail 14 part of the cohesion arm T1 is released, in this case, the endoscope body 1 can move back and forth freely in the sheath tube body 3.

As shown in fig. 1E and 1G, a hollow elastic power bag 5 is connected to the outer opening 112 of the working channel on the endoscope handle, the elastic power bag 5 is sleeved with the handle extension section 152 (see fig. 1C) through the extension part 51, so that the outer opening 112 of the endoscope working channel is communicated with the inner cavity 50 of the elastic power bag, the proximal end part of the bag extension tube 24 protrudes out of the outer opening 112 of the endoscope working channel and is positioned in the inner cavity 50 of the elastic power bag, when in use, the blocking body 243 is inserted into the outer opening 242 of the bag extension tube to block the outer opening, the inner cavity 50 of the elastic power bag can be filled with gas or liquid, and the inner cavity 50 of the elastic power bag is provided with a communication hole 52 (not shown) communicated with an external space; when the endoscope sheath of the utility model is pushed in the ureter U, when encountering difficult advancing of the stenosis N (as shown in figure 1H), the elastic power bag 5 is extruded outside the body to enable the fluid (air in the example) in the elastic power bag 5 to be filled into the inner cavity 20 of the bag body through the filling gap 110, wherein the filling gap 110 is the gap between the outer surface of the bag body extension tube 24 and the inner surface of the endoscope working channel 11, as shown in figure 1I, after the fluid enters the inner cavity 20 of the bag body, the bag body free part 22 is expanded, the stenosis N of the ureter U is subjected to flexible radial expansion, on the premise of not shearing and damaging mucous membrane, the obstruction of advancing of the stenosis N is eliminated, the passage of the endoscope is facilitated, the fluid in the inner cavity 20 is released from flowing back to the inner cavity 50 of the elastic power bag after extrusion, the shape of the bag body free part 22 is restored to the front of expansion, the elastic power bag 5 can be repeatedly extruded or relaxed for a plurality of times, the bag body free part 22 is synchronously filled or restored by fingers, the restoring capacity of the elastic power bag 5 is fully utilized, the communication hole 52 on the elastic power bag 5 is especially suitable for gas circulation, when the elastic power bag 5 is pressed, the finger presses the communication hole 52 to seal the communication hole, the gas in the elastic power bag 5 fills the inner cavity 20 of the bag body, the finger is released after the free part 22 of the bag body is expanded for a certain time, the elastic power bag 5 is restored and the gas flows out of the communication hole 52 rapidly, so that the free part 22 of the bag body is restored more quickly, and of course, a syringe or other electronically controlled filling device and a negative pressure suction device can be externally connected to control the elastic power bag 5.

When the device of the present utility model is used before the natural orifice is expanded, if the device is to be performed under the guidance of the guide wire G, the guide wire G may be inserted through the inner lumen 240 of the balloon extension tube, and fig. 1J shows that the guide wire G is passed out from the opening 241 in the balloon extension tube, and the balloon free portion 22 is in a inflated state, in which case the balloon free portion 22 is inflated along the guide wire G, so as to expand the natural orifice better.

The inner cavity 240 of the balloon extension tube can be used for the passage of the guide wire G to pass through and guide the guide wire G to go, after the plugging body 243 is pulled out from the outer opening 242 of the balloon extension tube, medicines including lubricating, diagnostic and therapeutic medicines such as smooth muscle relaxing medicines, developing agents and the like can be injected into the natural cavity channel through the inner cavity 240 of the balloon extension tube, and expanding, diagnostic and therapeutic gases can also be injected, the balloon extension tube 24 moves in the endoscope working channel 11 and can pull the balloon free part 22 in the expanded state to promote the restoration, control the expansion degree and adjust the shape of the balloon free part 22 in the expanded state, so that the individual operation needs of patients or doctors are met.

Fig. 1I shows a lens 10 and two optical windows 101 at the top 121 of the head of the endoscope body 1, and a pressure and temperature sensor 102, which can monitor the pressure of the balloon body free portion 22 when expanding, thereby adjusting the radial expansion force, effectively expanding the narrow natural cavity and ensuring the operation safety, while the temperature sensor can monitor the temperature change during the lithotripsy process, thus avoiding the high temperature damage.

When the endoscope is used, the top end 121 of the head of the endoscope main body 1 moderately protrudes out of the opening 311 in the sheath main body, at least the free part 22 of the capsule body is exposed, the fastening mechanism T is started to tightly connect the sheath main body 3 with the endoscope main body 1, so that the synchronous advancing and retreating of the endoscope and the sheath are realized, when the endoscope main body 1 advances in a natural cavity of a living body and encounters resistance, fluid can be filled into the inner cavity 20 of the capsule body through the filling gap 110 to expand the inner cavity, the narrow part of the cavity is radially and flexibly expanded, the subsequent advancing of the endoscope main body 1 is facilitated, and after the sheath main body 3 reaches a target position, the fastening mechanism T is loosened, and the endoscope main body 1 can freely rotate or move back and forth in the sheath main body 3.

After the endoscope sheath of the device is integrally pushed to a target position, the fastening knob T2 is rotated in vitro, so that the holding arm T1 is separated from the fastening knob T2, the holding arm T1 is released from clamping the tail 14 part of the endoscope body, the head 12 of the endoscope body protrudes from the inner opening 311 of the sheath body into the renal pelvis P, as shown in figure 1L, the endoscope body 1 is withdrawn back from the inner cavity 31 of the sheath body, the free part shielding part 23 of the capsule is deformed and lifted upwards in the gap 130 of the sheath body, after the head 12 of the endoscope body is withdrawn from the outer opening 312 of the sheath body, the capsule 2 which covers the head 12 of the endoscope body is taken out together with the capsule extension tube 24 through the upper opening 111 or the lower opening 112 of the working channel 11, the working channel 11 is exposed, and then the endoscope body 1 is put into the inner cavity 31 of the sheath body for subsequent lithotripsy or other medical treatment operations (not shown).

The connection of the balloon connection portion 21 to the outer surface of the endoscope body head 12 in a tubular shape is an easily separable connection, and further medical operations are performed subsequently in order to expose the working channel.

The various tube bodies described in the utility model are described in terms of positions, namely, the head part faces the distal end part and enters the body when in use, the tail part faces the proximal end part and is usually positioned outside the body when in use, the inner opening is the distal end opening and is positioned inside the body when in use, the outer opening is the proximal end opening and is positioned outside the body when in use, the front moving is in the distal direction, the back moving is in the proximal direction, the upper and front faces the distal end, and the lower and rear faces the proximal end.

The balloon 2 is preferably made of a compliant material that can be extended forward while flexibly radially expanding the natural orifice.

In the prior art endoscope system, as shown in fig. 1A and 1B, the hollow sheath body 3 comprises a sheath body head 32, a sheath body middle part 33 and a sheath body tail 34, the sheath has a sheath body inner opening 311 which enters the body in use and a sheath body outer opening 312 and a sheath body side branch opening 313 which are positioned outside the body, an adjusting button 341 is arranged on the sheath body side branch, when the sheath body side branch opening 313 is connected with a negative pressure suction device (not shown), the adjusting button 341 is used for adjusting whether the sheath side branch inner cavity 340 is communicated with the outside, a hollow elastic sealing plug S is arranged in the sheath body outer opening 312, the sheath core 4 comprises a sheath core head 42, a sheath core middle part 43 and a sheath core tail 44, the sheath core inner cavity 41 is provided with a sheath core inner opening 411 and a sheath core outer opening 412, the sheath core outer opening 412 protrudes out of the sheath body tail 34, the tail 44 tail end is positioned outside the sheath body inner cavity 31, the tail end 44 tail end is provided with a buckle body 441 and 342 is connected with a receiving body buckle at the tail end of the sheath body tail 34, and the buckle connector can synchronously extend out of the sheath body from the sheath body inner opening 42 and the sheath core inner opening 41 through the sheath body inner opening 3, and the sheath core inner head can synchronously extend out of the sheath body head and the sheath body head 3 from the sheath body inner opening 42.

The steps of the prior art of transureteral nephrolithiasis surgical endoscope are that 1, as part 1A-2 in figure 1A, the hard endoscope head 12 enters the urinary bladder from the urethra and then enters the ureter U, 2, the guide wire G is placed into the renal pelvis P along the working channel of the hard endoscope, 3, the hard endoscope is withdrawn and only the guide wire is left in the urinary tract, 4, as part 1A-3 in figure 1A, the ureteral sheath and the sheath core in the ureteral sheath are placed through the guide wire, 5, the sheath core in the ureteral guiding sheath is withdrawn (not shown), 6, as part 1B-1 in figure 1B, the soft endoscope is inserted from the inner cavity 31 of the ureteral sheath body, part 1B-2 in figure 1B shows the sheath body head 32 positioned near the junction of the ureteral U renal pelvis P, the inner opening 311 of the sheath body faces the renal pelvis P, part 1B-3 in figure 1B shows the bendable endoscope body head 12 part of the sheath inner opening 311 stretches into the renal pelvis P, the opening of the soft endoscope 11 is placed in the working channel of the ureteral renal pelvis, the cooling channel is placed under the working channel of the ureteral endoscope, and the soft endoscope is not used for carrying the protection of the prior art.

The protective endoscope device is characterized in that the hard head edge of the sheath tube main body is protected by the flexible shielding part in the whole process of the natural cavity advancing process, so that the mucous membrane shearing damage in the endoscope placing process is obviously reduced, when the natural cavity is narrowed in the endoscope placing process, the head capsule of the endoscope main body is inflated and expanded, the capsule is relieved after the radial expansion of the narrow part, the subsequent passing is facilitated, the endoscope sheath is synchronously advanced, the operation steps are reduced, the efficiency is improved, the sheath core 4 component is omitted, the use of a guide wire G can be omitted, the head capsule on the basis of visualization is expanded, the natural cavity is expanded after the head capsule is expanded under pressure monitoring, the expansion effect is more reliable, the urethral canal membrane part can be slowly radially expanded when the head capsule is placed in the urethra, the urethral sphincter is protected, the occurrence of postoperative urine control obstruction is avoided to the greatest extent, the junction of the flexible expansion ureter and the bladder is protected, the occurrence of the back flow of the postoperative ureter is avoided to the greatest extent, the operation steps are obviously simplified, the operation time is saved, and the treatment cost is greatly reduced.

Example 2:

In this example, as shown in fig. 2A, a tapered protrusion 228 extending to the distal end is provided on the free portion 22 of the balloon at the periphery of the opening 241 in the balloon extension tube, and the flexible tapered protrusion helps the endoscope to advance in the lumen, so that the tapered protrusion 228 is pushed forward after the balloon 2 is inflated, and the lumen in front is synchronously expanded, thereby achieving the effect of extension expansion.

As shown in fig. 2B, the guide wire G passes through the balloon extension lumen 240 and the tapered protrusion 228 thereon, and the balloon free portion 22 can be inflated under the guidance of the guide wire G to better dilate the natural orifice, especially the narrow natural orifice.

Example 3:

as shown in fig. 3A, the difference between the present embodiment and embodiment 2 is that, in order to strengthen the cooperation between the balloon 2 and the guide wire G, that is, to avoid the inner opening 241 of the balloon extension tube from being extruded and retracted to hug the guide wire G when the balloon free portion 22 is inflated, the inflated free portion 22 cannot extend along the guide wire, and the inner opening 241 of the balloon extension tube is provided with an annular thick-wall reinforcing rib 223 and a downward thickening section 225, so that the balloon free portion 22 does not hug the guide wire G when inflated.

In order to increase the volume after expansion under the same filling pressure, the balloon free portion 22 is provided with a plurality of annular folds 227 with an increased area, fig. 3B shows that the inner cavity 240 of the balloon extension tube penetrates into the guide wire G, and the annular folds 227 on the balloon free portion 22 obviously increase the surface area of the balloon free portion 22 on the premise that the projection area of the head end 121 of the endoscope is unchanged, so that the volume of the inner cavity of the balloon after expansion is increased, the balloon free portion 22 can extend and expand along the axial direction of the natural cavity during filling, and the longer narrow cavity can be filled and expanded at one time.

Example 4:

As shown in fig. 4A and 4B, the difference from embodiment 3 is that the peripheral region of the opening 241 in the balloon extension tube is provided with an upward thickening 224, so as to avoid the balloon free portion 22 from clasping the guide wire G when expanding.

Example 5:

In fig. 5A, the hollow nipple 226 protruding distally is provided on the peripheral area of the opening 241 in the balloon extension tube, the hollow nipple 226 can be more easily expanded in a forward extending manner when the balloon free portion 22 is filled, the expansion range is increased, the axial distance of expansion is prolonged, fig. 5B shows that the inner cavity 240 of the balloon extension tube penetrates into the guide wire G, in order to ensure that no fluid leaks from the balloon connecting portion 21 when the balloon is filled and expanded, the balloon connecting portion 21 is in sealing connection with the outer surface of the endoscope body head 12, the wall thickness of the balloon connecting portion 21 is larger than that of the balloon free portion 22, the balloon connecting portion 21 and the outer surface of the endoscope body head 12 are preferably in interference fit, the assembled balloon connecting portion 21 is positioned in the sheath gap 130, and the characteristics of the elastic material of the balloon 2 can enable the balloon free portion 22 to be deformed upwards and finally separated from the endoscope body head 12 when the balloon free portion 22 is pulled by larger external force.

The change in wall thickness reduction after inflation of the balloon free portion 22 is not shown in the drawings of the present utility model to clearly show the critical structure.

When the utility model is used for kidney stone surgery, the section adjacent to the opening 311 in the sheath body is a bendable section of the sheath body, and/or the section of the endoscope body adjacent to the opening 111 in the working channel is an endoscope bendable section (shown in figure 1K), and the bendable section ensures that the endoscope is not easy to generate visual dead angles and operation dead angles in renal pelvis and renal calyx.

The utility model is used for a transureteral lithotripsy operation system, and also comprises at least one of a perfusion device (not shown), a lithotripsy optical fiber (not shown), a negative pressure suction device (not shown), a pressure sensor, a temperature sensor (not shown), a calculus basket (not shown) and a guide wire, wherein the pressure sensor and the temperature sensor can be arranged in the adjacent area of an opening 311 in a sheath body and can also be arranged at the head 12 of an endoscope body, so that the pressure and the temperature in the urinary tract can be conveniently monitored in operation, the operation safety is ensured, and the friction is reduced in order to put in and operate, and hydrophilic coatings are attached to the free part 22 of the capsule body, the endoscope body 1, the sheath body 3 and the guide wire G.

The safe imbedded medical endoscope of the utility model remarkably simplifies the operation steps, reduces the tissue injury, saves the operation time and reduces the treatment cost, can be used for the medical operation in various natural cavity tracts including cardiovascular and respiratory tracts, auditory tracts, lacrimal tracts, genital tracts and digestive tracts or in third gaps of thoracic cavities, abdominal cavities and the like of living bodies, and can also be used for the medical operation of traumas, pathological sinus tracts and the like which are penetrated and injured.

Claims (9)

1. A medical endoscope, an optical component is arranged on a slender endoscope main body (1), the endoscope main body (1) is provided with a working channel (11) penetrating through the head and the tail, the working channel (11) is provided with a working channel inner opening (111) which enters the body when in use and a working channel outer opening (112) which is positioned outside the body when in use;

The endoscope is characterized in that the top end (121) of the head of the endoscope body (1) is coated with an expandable balloon (2), the balloon (2) is composed of a balloon connecting part (21) and a balloon free part (22), the balloon connecting part (21) is connected with the outer surface of the head (12) of the endoscope body (1) in a cylindrical shape, the balloon free part (22) is an expandable part of the balloon (2), a balloon inner cavity (20) is formed by a gap between the balloon free part (22) and the top end (121) of the head of the endoscope body (1), the maximum outer diameter of the expanded balloon free part (22) is at least larger than the outer diameter of the head (12) of the endoscope body, the balloon free part (22) is transparent or at least the area corresponding to the optical component of the top end (121) of the head of the endoscope body (1), a hollow balloon extension tube (24) is connected with the inner surface area of the balloon free part (22), the balloon extension tube (24) is provided with a balloon extension tube inner opening (241) and a balloon extension tube outer opening (242), the balloon extension tube (24) can be directly penetrated into an auxiliary wire (11), the tail end of the balloon extension tube (24) passes through an outer opening (112) of the working channel of the endoscope, fluid can enter the inner cavity (20) of the balloon through a perfusion gap (110) between the outer surface of the balloon extension tube (24) and the inner surface of the working channel (11), a flexible balloon shielding part (23) extends outwards at the junction of the balloon free part (22) and the balloon connecting part (21), and when the endoscope main body (1) moves forwards in the natural cavity of the living body to meet resistance, the perfusion gap (110) can be used for filling fluid into the inner cavity (20) of the balloon to expand the balloon free part (22), and the tissue at the narrow part of the natural cavity is radially and flexibly expanded, so that the endoscope main body (1) can move forwards in the natural cavity after expansion.

2. A medical endoscope according to claim 1, characterized in that the balloon free portion (22) is provided with a distally projecting conical projection (228) located in the region surrounding the opening (241) in the balloon extension.

3. A medical endoscope according to claim 1, characterized in that the balloon free portion (22) is provided with a hollow nipple (226) in the region of the circumference of the balloon extension inner opening (241), and/or that the balloon free portion (22) is provided with one or more annular folds (227).

4. The medical endoscope according to claim 1, wherein a reinforcing structure is provided in a peripheral region of an opening (241) in the balloon extension tube connected to the balloon free portion (22), and comprises at least one of an annular thick-wall reinforcing rib (223), an upper thickening section (224), and a lower thickening section (225).

5. A medical endoscope according to claim 1, characterized in that the working channel outer opening (112) is connected with a hollow elastic power bag (5), the elastic power bag (5) is extruded to fill the fluid in the elastic power bag to the inner cavity (20) of the bag body, the free part (22) of the bag body is inflated, and the fluid in the inner cavity (20) of the bag body flows back to the inner cavity (50) of the elastic power bag after the extrusion is released.

6. A medical endoscope according to claim 1, characterized in that the wall thickness and/or the strength of the balloon connection (21) of the balloon (2) is greater than the balloon free portion (22).

7. A safe imbedding type endoscope device, which is characterized by comprising a sheath tube and a medical endoscope as claimed in any one of claims 1-6, wherein an elongated sheath tube main body (3) is sleeved outside the endoscope main body (1), the sheath tube main body (3) is provided with a sheath tube main body inner opening (311) which enters a human body when in use and a sheath tube main body outer opening (312) which is positioned outside the human body when in use, and a flexible bag body shielding part (23) which can shield or cover the inner opening outer edge (322) of a sheath tube main body inner cavity (31) extends outwards at the juncture of a bag body free part (22) and a bag body connecting part (21).

8. The endoscope apparatus according to claim 7, wherein a flexible balloon shielding portion (23) capable of shielding an inner opening outer edge (322) of the inner cavity (31) of the sheath body is extended outwards from a junction between the balloon free portion (22) and the balloon connecting portion (21), the flexible balloon shielding portion (23) is provided with a cylindrical flange (232), and the cylindrical flange (232) covers the inner opening outer edge (322).

9. The endoscope apparatus according to claim 7, wherein a fastening mechanism (T) capable of being tightly connected with the tail (14) of the endoscope body is provided adjacent to the outer opening (312) of the sheath body, and when in use, the head tip (121) of the endoscope body (1) is extended out of the inner opening (311) of the sheath body, at least a part of the free portion (22) of the capsule is exposed, the fastening mechanism (T) is started to tightly connect the sheath body (3) with the endoscope body (1), the synchronous advance and retreat of the endoscope body (1) and the sheath body (3) is realized, and after the apparatus reaches the target position, the fastening mechanism (T) is released, and the endoscope body (1) can freely rotate or move back and forth in the inner cavity (31) of the sheath body.