CN221671850U - Urinary calculus tentacle type capturing basket and urinary calculus operation system - Google Patents

Abstract

For realizing the clear stone purpose in the art, this patent provides a urolithiasis tentacle and catches basket and urolithiasis operation system, the tentacle is caught basket main part and is straight or crooked bag strip body that has the inner chamber, stretch out a plurality of straight bars shape and/or crooked bar-shaped tentacles in the tentacle is caught the basket main part, the tentacle clearance holds the calculus piece, the tentacle root is that the tentacle and is caught the near zone of the main part junction of basket and has been offered a plurality of suction holes that can adsorb the calculus piece, suction hole intercommunication tentacle catches basket inner chamber, tentacle is caught basket inner chamber proximal end opening and is direct or be linked together with outside negative pressure device through the suction tube, under negative pressure rivers effect, the calculus piece is adsorbed and is detained in a plurality of tentacles, and is clear away outside along with the scope of endoscope again.

Description

Urinary calculus tentacle type capturing basket and urinary calculus operation system

Technical Field

The utility model relates to a urinary calculus tentacle type capturing basket and a urinary calculus operation system, and belongs to the technical field of medical instrument products.

Background

Clinically common kidney stones and ureteral stones are usually removed by a traditional basket formed by a plurality of wires in the later stage of laser lithotripsy, namely, large-size stones are still remained, the average diameter of the stones is usually smaller than 2mm, the basket is difficult to grasp, water flow is directly flushed, no direction is circulated, the cleaning effect is extremely poor, and finally, the stones and the stones are gradually discharged out of the body along with urine in a plurality of days after operation by a patient; whereas clinical studies indicate that: the residual calculus debris can significantly increase the risk of postoperative urinary tract infection and calculus recurrence.

Disclosure of Invention

In order to achieve the aim of removing stones in operation, the utility model provides a urinary stone tentacle type capturing basket and a urinary stone operation system, wherein a plurality of tentacles are arranged on a tentacle type capturing basket main body, stone fragments are accommodated in tentacle gaps, suction holes capable of adsorbing the stone fragments are formed in the tentacle type capturing basket main body, and under the action of negative pressure water flow, the stone fragments are adsorbed and retained in the tentacles, and then are removed from the body along with the withdrawal of an endoscope.

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

The utility model provides a urinary calculus tentacle formula catches basket, the main part is the straight or crooked bag strip body that has the inner chamber, tentacle formula catches basket inner chamber and is equipped with the proximal end opening, stretch out a plurality of straight shaft-like and/or crooked shaft-like tentacles in the tentacle formula of catching basket main part, leave the tentacle clearance between each tentacle, the tentacle root is near tentacle and the main part junction of catching the basket offered a plurality of suction holes that can adsorb the calculus piece, suction hole intercommunication tentacle formula catches basket inner chamber, tentacle formula is caught basket inner chamber proximal end opening and is directly or through suction tube and outside negative pressure device intercommunication.

The tentacle type capturing basket is matched with the endoscope for use, an optical assembly is arranged on the slender endoscope, the endoscope comprises a working channel penetrating through the head and the tail, and the working channel is provided with an inner opening of the working channel entering the body and an outer opening of the working channel at the outer part of the body when in use; the sheath tube is sleeved outside the endoscope, the sheath tube is provided with a sheath tube inner opening which enters the body when in use and a sheath tube outer opening at the outer part, and the tentacle type capturing basket can enter the sheath tube along with the endoscope; when in use, water is introduced into the gap between the sheath and the working channel, the working channel is connected with the water outlet of the negative pressure device, and stone fragments are retained in the gap between the flexible tentacles.

Preferably, the tentacle type capturing basket is made of flexible materials, and the rod-shaped flexible tentacles are sea anemone-shaped and villus-shaped; on the premise of not increasing the external size of the tentacle type capturing basket, the suction holes are formed in the grooves and can contain more stone fragments; in the later stage of a laser lithotripsy operation, namely, large-size stones are removed by a traditional mesh basket formed by a plurality of wires, a large amount of fine stone fragments still exist, the average diameter is usually smaller than 2mm, at the moment, a transparent tentacle type capturing basket made of flexible materials is arranged on the head of an endoscope, after a working channel is connected with a negative pressure device, the inner cavity of the tentacle type capturing basket synchronously generates negative pressure, the stone fragments are adsorbed on part of suction holes, or are extruded and retained in gaps among a plurality of flexible tentacles, and the flexible tentacle gaps and the suction holes which are not filled by the stone fragments still have water flow, so that the stone fragments can be continuously sucked and extruded and retained in the flexible tentacle gaps, and water can be continuously supplied in the scope sheath gaps, so that the negative pressure suction under dynamic water flow is realized; meanwhile, the function of reducing the internal pressure of the ureter and the renal pelvis can be achieved, and particularly, a water source connected with a gap between the sheath is provided on the premise of not remarkably pressurizing, for example, the gap between the sheath is connected with a flexible water bag hung outside the body at a certain height, water is supplied by means of gravity or the attractive force of a negative pressure device, how much water flows out of the body through the inner cavity of the basket is captured by tentacles, how much water can be automatically supplemented by the flexible water bag outside the body, and the hydrostatic pressure of the flexible water bag is only used when the negative pressure suction is not started, so that the high pressure of the ureter and the renal pelvis is not caused; the bent tentacle-shaped capturing basket is easier to access the lower cup, while the tapered distal end of the tentacle-shaped capturing basket is easier to access the smaller kidney cup of the cup neck; the active tracking type calculus debris suction and attachment of the tentacle capturing basket in a visual state can be used for wiping the surface of the mucous membrane more safely, so that the calculus debris adsorbed on the mucous membrane can fall off, the clinical goal of calculus cleaning in an operation can be realized to the greatest extent, and postoperative complications such as infection, calculus recurrence and the like caused by residual calculus debris are avoided; the outer diameter or the outer dimension of the tentacle type capturing basket is smaller than or equal to the inner diameter or the inner dimension of the working channel of the endoscope; when the tentacle type capturing basket is positioned in the ureter and the renal pelvis, the suction condition is observed in real time under the guidance of the endoscope, the endoscope can be retracted to the outer opening of the sheath tube at the tail part of the sheath tube together with the tentacle type capturing basket when the residual suction holes are not more, the negative pressure suction device is stopped, the perfusion device is connected, the back flushing is carried out to enable the stone fragments adsorbed and retained on the tentacle type capturing basket to fall off, at the moment, the perfusion device connected with the tail part of the sheath tube is changed into the negative pressure suction device, and the stone fragments falling off from the tentacle type capturing basket are sucked into the negative pressure side branch at the tail part of the sheath tube to be finally cleared; the tentacle type capturing basket can be taken out and washed clean of calculus scraps in an in-vitro sterile environment and then put into a body; the working channel is connected with the water outlet of the negative pressure device, and water flow can directly enter the working channel or enter a pipeline in the working channel.

Preferably, the tentacle-type capturing basket body and tentacle are flexible, and the tentacle is in a rod shape with or without branches; the overall shape of the tentacle-type capturing basket after being connected with the flexible tentacles is one of worm shape, caterpillar shape with tapered distal end, balloon strip with expanded middle, balloon strip with expanded distal end and bifurcated balloon strip.

The tentacles can be in a straight rod shape or a bent rod shape, can also be in a zigzag rod shape, and the walking shape of the rod-shaped tentacles can be gradually thinned or thickened; tentacles can be different in length, thickness and distribution;

To increase the capacity of the stone chips, the tentacle-type capture basket is provided with recesses including, but not limited to, one or more of axial groove-like recesses, continuous or intermittent screw-like recesses, continuous or intermittent radial circumferential recesses, and pit-like recesses.

The depressions can be distributed axially and radially, and can also be distributed spirally, so that raised ridge parts can be formed, the ridge parts are not provided with suction holes, the external dimension is prevented from being increased to be difficult to retract into the sheath after the stone fragments are adsorbed, and the stone fragments can be fully contained in the depressions without increasing the external dimension of the tentacle type capturing basket.

To facilitate viewing of the endoscope, further, the flexible tentacles on which the tentacle capturing basket is attached are transparent or at least the area corresponding to the endoscope head tip optical assembly is transparent.

The structure is that an elongated suction tube is connected to the proximal end opening of the tentacle type capturing basket, the suction tube penetrates out from the outer opening of the working channel of the endoscope, the outer opening of the suction tube is connected with a suction tube connector of an external negative pressure device, a sealing body is arranged at the penetrating position of the suction tube from the outer opening of the working channel of the endoscope, and a gap between the suction tube and the working channel is not communicated with the outside of the body.

Under the design, the outer opening of the suction tube is arranged on the suction tube joint positioned outside the body; the sealing body can be arranged on the suction tube and connected with the suction tube into a whole, and can also be arranged in an outer opening of a working channel of the endoscope, the preferable sealing body is a hollow elastic member, the suction tube can slide in the sealing body on the premise of ensuring sealing, the tentacle type capturing basket at the far end can be driven to move forwards or backwards when the endoscope is not in use, and the tentacle type capturing basket can also be rotated, so that stone fragments can be cleaned more flexibly under the visual condition; when the suction device is used, the suction tube is inserted into the outer opening of the working channel of the endoscope, the head of the suction tube is inserted into the working channel after the head of the suction tube protrudes out of the inner opening of the working channel, the suction tube and the working channel are matched with each other in an easy-to-insert manner, the tentacle type capturing basket is pulled out of the suction tube after the use, and then the suction tube is pulled out of the outer opening of the working channel; the medicine can be injected into ureter, renal pelvis and renal calyx via the slender suction tube cavity, including lubricating, diagnostic and therapeutic medicines; an expansive, diagnostic, therapeutic gas may also be injected.

For adsorbing far-distance calculus scraps, especially the calculus scraps right in front of the capturing basket, the head of the tentacle type capturing basket is provided with a far-end opening, and the far-end opening is directly communicated with the inner cavity of the tentacle type capturing basket; or the far-end opening is positioned on the endocytic or forward-extending type adsorbent, the far-end opening is narrowed toward the inner cavity of the tentacle type capturing basket in a funnel shape, and the inner space of the funnel-shaped forward-extending type adsorbent is communicated with the inner cavity of the tentacle type capturing basket through the neck opening of the forward-extending type adsorbent; the design can enable the distal end of the tentacle type capturing basket penetrating into the renal calyx to have negative pressure suction capability, and can suck stone fragments deep in the renal calyx into the funnel without blocking the working channel of the endoscope; the endocytic adsorbent is a structure similar to a stretching adsorbent positioned in the head of the tentacle type capturing basket.

To avoid clogging the working channel, the maximum size of the suction holes in the tentacle-type capture basket is smaller than the cross-sectional size of the endoscope working channel or associated suction tube lumen.

Further, at least a portion of the tentacles on the tentacle-type capturing basket are hollow, and the hollow tentacle inner cavity is provided with an inner opening which is communicated with the tentacle-type capturing basket inner cavity towards the external environment.

Because the external opening of the hollow feeler is firstly contacted with the stone fragments, and is preferably made of flexible materials, the hollow feeler can be rubbed and sucked for combination, thereby being beneficial to removing the stone fragments embedded into the mucous membrane; the external openings of the hollow tentacles form a first-stage negative pressure suction, tentacle gaps of negative pressure form a second-stage negative pressure suction, suction holes form a third-stage negative pressure suction, the forward-extending type adsorbing body forms a special negative pressure suction to deep parts, and the multistage negative pressure suction and the extrusion retention of stone fragments by the flexible tentacles enable the stone cleaning in the operation to be carried out safely and efficiently.

A tentacle type capturing basket main body, tentacles, an outer surface of a tentacle type capturing basket suction tube and an inner surface of an endoscope working channel, at least one of which is attached with a hydrophilic coating; the hydrophilic coating can be attached to the outer surface of the tentacle type capturing basket, and can also be arranged inside the tentacle type capturing basket, so that the friction force when the hydrophilic coating contacts with a ureter, a renal pelvis and a renal calyx can be obviously reduced after hydration, and mucous membrane injury is reduced; the hydrophilic coating is attached to the outer surface of the suction tube and the inner surface of the working channel, which are connected with the tentacle type capturing basket, so that the resistance of the tentacle type capturing basket and the working channel during sliding can be reduced, and the tentacle type capturing basket is easy to drive to move forwards, backwards and rotate.

In addition to any one of the above tentacle-type capturing baskets, the urinary calculus surgical system further comprises at least one of a head-generally-small endoscope, a sheath, a perfusion device, a lithotripsy fiber, a negative pressure suction device, a pressure sensor, a temperature sensor, a water bag and a guide wire.

The endoscope with the large head is characterized in that when the endoscope is matched with a sheath tube with the same specification, the head of the endoscope is unchanged in size, the main body is more slender, only a visual function and a working channel with a certain size are ensured, even the inner diameter of the working channel is reduced, a larger sheath gap is generated, and water entering is smoother; because the utility model is designed to absorb the stone fragments which are difficult to clean by the traditional stone basket in the laser lithotripsy operation on the tentacle type capturing basket and then clear the outside of the body, the key is that the dynamic water flow is ensured by enlarging the gap between the lens and the sheath without a larger working channel.

The beneficial effects of the utility model are as follows:

1. The tentacle type capturing basket captures calculus chips under the assistance of negative pressure, and the calculus chips are adsorbed and retained in the tentacle gap, so that the calculus chips can be removed from the body along with the withdrawal of the endoscope.

2. The tentacle type capturing basket with various structures meets the individual requirements of patients.

3. Under the premise of ensuring safety, the flexible tentacle can brush and remove stone fragments which are embedded and adhered in the kidney, and then is attracted and removed, so that hidden danger is avoided.

4. The negative pressure suction passage can be changed into positive pressure flushing after being connected with the perfusion device, and the brushing and removing functions of the flexible tentacles are combined to flush and remove stone fragments which are embedded and adhered in the kidney.

5. The endoscope has a generally small head, and increases the water inlet sectional area, thereby improving the adsorption efficiency.

6. The calculus fragments under the pressure monitoring are captured by tentacle negative pressure, so that the method is safer and more reliable.

7. Creating good conditions for the ideal clinical aim of stone clearing in operation.

8. Eliminating the infection and the recurrence of the calculus caused by the residual calculus scraps to the maximum extent.

Drawings

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

Fig. 1A: a schematic diagram of a sheath tube 3 and an endoscope 1 for urinary calculus operation;

fig. 1B: the prior art endoscope 1 enters the sheath tube 3 and the basket 02 to capture a schematic view of the stone fragments C1 with larger size;

Fig. 1C: example 1 a schematic view of a stone tentacle capture basket 2 showing a plurality of tentacles 24 on the tentacle capture basket 2;

Fig. 1D: a cross-sectional view of the stone tentacle capturing basket 2, the tentacle 24 capturing and retaining smaller sized stone fragments C2;

Fig. 1E: a hollow extension 231 of the stone tentacle-type capture basket tail 23 is inserted into the cross-sectional view of the opening 111 in the working channel of the "head-generally-small" endoscope, with the arrows indicating the direction of water flow;

fig. 1F: schematic of the working principle of the tentacle-type capturing basket 2 within the renal pelvis P;

Fig. 1G: a perspective schematic view of the stone tentacle type capturing basket 2 with the suction tube 232;

Fig. 1H: a schematic cross-sectional view of the stone tentacle capturing basket 2, the endoscope 1 and the sheath 3 together with the suction tube 232, and arrows indicate the water flow direction;

Fig. 1I: a schematic perspective view of the suction tube 232 passing out of the outer opening 112 of the endoscope working channel 11, the arrows indicating the direction of water flow;

fig. 1J: a perspective schematic view of the calculus tentacle type capturing basket 2 in a bending state;

Fig. 2A: a perspective view of embodiment 2, wherein a plurality of tentacles 24 extend from the front end of the head 21 of the stone tentacle capturing basket 2;

Fig. 2B: a perspective view of the smaller sized stone chips C2 of example 2 being adsorbed and retained in the tentacle gap 240;

fig. 3A: a perspective view of example 3 shows that the head 21 of the stone tentacle type capturing basket 2 is provided with a funnel-shaped forwardly extending adsorbent 245;

Fig. 3B: schematic cross-sectional view of example 3;

Fig. 3C: a partial cross-sectional schematic view of example 3, showing the interior 2450 of the reach-through sorbent body 245 adsorbing and retaining a large quantity of smaller-sized stone chips C2 and a larger-sized stone chip C1;

Fig. 4A: a schematic perspective view of embodiment 4, with branches 244 on feeler 24;

Fig. 4B: the partial cross-sectional view of example 4, the tentacles 24 between the branches 244, absorb and retain smaller sized stone fragments C2;

fig. 5A: a perspective view of the stone tentacle capturing basket 2 with hollow tentacles 246 of example 5;

fig. 5B: a partial cross-sectional view of example 5;

Detailed Description

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

Example 1:

As shown in fig. 1A, a sheath 3 for urinary stone surgery and an endoscope 1, wherein the sheath 3 (herein, "sheath" and "sheath body" are described as equivalent), when in use, is sleeved outside the endoscope 1, the sheath 3 comprises a sheath head 32, a sheath middle 33 and a sheath tail 34, the sheath has an inner sheath opening 311 and an outer sheath opening 312 which are used for entering the body and an outer part, a sheath side branch opening 313 is provided with an adjusting button 341, when the sheath side branch opening 313 is connected with a negative pressure suction device (not shown) or a perfusion 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 endoscope 1 is a flexible slender endoscope 1, comprising a head 12, a middle 13 and a tail 14, wherein the endoscope 1 comprises a main channel 11 penetrating through the head and the tail, the main channel 11 is provided with a main channel inner opening 111 entering the body and a main channel outer opening 112 of an external part, the tail 14 is connected with an operating handle 15 for a user to operate the endoscope, and the operating handle 15 is provided with a power interface 151; as in fig. 1B: the endoscope 1 in the prior art enters the sheath tube 3, the endoscope works to enable the inner opening 111 to extend out of the top end of the sheath tube head 32, a laser fiber is arranged in the working channel 11 to carry out stone crushing operation (not shown in the figure) in the renal pelvis, the basket 02 which is composed of metal wires in the prior art extends out of the sleeve 01, and after the stone fragments C1 with larger size are captured, the stone fragments C1 are removed along with the endoscope 1 after being withdrawn to the sheath tube tail 34; there are still many smaller sized stone chips C2 that cannot be captured using the prior art basket 02.

As shown in fig. 1C and 1D, the main body portion of the stone tentacle type capturing basket 2 of embodiment 1 is a bag-shaped body with an inner cavity 20, the inner cavity 20 of the tentacle type capturing basket 2 is provided with a proximal opening 202, a plurality of straight rod-shaped tentacles 24 are stretched out from the main body of the tentacle type capturing basket 2, the material is preferably flexible, the tentacles 24 can also be in various shapes such as bending rod-shaped, flagellum-shaped, sea anemone-shaped and the like, a plurality of small-size stone fragments C2 can be contained in a plurality of tentacle 24 gaps 240, and a plurality of suction holes 241 capable of adsorbing the stone fragments C2 are formed near the root parts of the tentacles 24 of the tentacle type capturing basket 2, namely, the connection parts of the tentacles 24 and the main body portion of the tentacle type capturing basket 2; preferably, the suction aperture 241 is smaller than the proximal opening 202 of the tentacle capturing basket 2, so as to avoid blockage of the negative pressure path by the stone chips C2, i.e., the tentacle capturing basket lumen 20 in the form of a strip during operation.

Overall, the tentacle-type capturing basket 2 includes a distal head 21, a middle 22, and a proximal tail 23, with the tentacle-type capturing basket proximal opening 202 being located at the tail 23; the tentacle type capturing basket can be made of flexible materials or rigid materials; without increasing the outer dimensions of the tentacle capturing basket 2, the suction holes 241 are open at the root of the tentacles 24, allowing the tentacle gap 240 to accommodate more stone chips C2 with the assistance of negative pressure.

The distal opening 201 is provided at the distal end of the head 21 of the tentacle-type capturing basket 2 in this example, and preferably the distal opening 201 is smaller in size than the proximal opening 202 of the tentacle-type capturing basket 2, so that the blockage of the negative pressure path by the stone chips C2 can be avoided.

In this example, the main body of the tentacle-type capturing basket 2 is provided with a plurality of axial groove-shaped depressions 243 extending from the head 21 to the tail 23, ridge portions 242 are arranged between the axial groove-shaped depressions 243, and suction holes 241 are not arranged on the ridge portions 242, so that the situation that the external dimension of the tentacle-type capturing basket 2 is difficult to retract into the sheath 3 after the stone chips C2 are adsorbed is avoided, but a large number of tentacle gaps 240 in the groove-shaped depressions 243 can fully accommodate the stone chips C2 without increasing the external dimension; the recess structure may also be one or more of a continuous or intermittent thread-like recess, a radial circumferential recess, a bulk pit-like recess.

In this example, the height of the tentacle 24 exceeds the ridge 242, so that the flexible tentacle 24 first contacts the mucosa of the renal pelvis P, and the fine stone fragments C2 embedded on the mucosa are easily brushed off by the tentacle 24 in motion and are sucked by the negative pressure to stay in the tentacle gap 240, so that a visual powerful weapon for thoroughly removing the stone fragments C2 in the kidney is provided.

As a variation of this embodiment, the tentacle-type capturing basket 2 with the flexible tentacles 24 may have a worm-like, caterpillar-like, distal tapered caterpillar-like, middle enlarged balloon-like, distal enlarged balloon-like, bifurcated balloon-like, etc. body shapes.

As shown in fig. 1E, etc., the tentacle-type capturing basket 2 is used in cooperation with the endoscope 1, the head 12 of the slender endoscope 1 is provided with an optical component, the endoscope 1 comprises a working channel 11 penetrating through the head and the tail, and the working channel 11 is provided with a working channel inner opening 111 which enters the body and a working channel outer opening 112 of the external part when in use; the sheath 3 is sleeved outside the endoscope 1, and is provided with a sheath inner opening 311 which enters the body when in use and a sheath outer opening 312 which is at the external part; the tail of the tentacle type capturing basket is provided with a hollow tubular extension body 231, when the tentacle type capturing basket is used, the extension body 231 is inserted into the inner opening 111 of the working channel of the endoscope, so that the outer surface of the tubular extension body 231 is in interference fit with the inner surface of the working channel 11 to a certain extent, and the tubular extension body 231 is in sealing contact with the inner surface of the working channel; with this configuration, the proximal opening 202 of the tentacle-type capturing basket is located at the end of the hollow tubular extension 231 of the tentacle-type capturing basket tail 23, and the tentacle-type capturing basket 2 is inserted into the working channel 11, then enters the sheath 3 along with the endoscope 1, and extends out from the top end of the sheath head 32; when in operation, the sheath gap 130 is filled with water, and the outer opening 112 (see fig. 1F) of the working channel 11 is connected with the water outlet of the negative pressure device (not shown); instead of the extension body 231, the proximal opening 202 of the tentacle type capturing basket 2 can be directly sleeved on the endoscope head 12 to enable the tentacle type capturing basket inner cavity 20 to be communicated with the endoscope working channel 11, in the scheme, the endoscope optical component can be covered, the tentacle type capturing basket 2 is transparent or at least the area corresponding to the optical component at the top end 121 of the head of the endoscope 1 is transparent, so that negative pressure suction on small-size stone fragments C2 can be ensured under the visual premise; the tentacle-type capturing basket 2 is made of a flexible material, preferably having a hardness close to that of the mucosa of the renal pelvis, avoiding mucosal damage during handling.

In the later stage of laser lithotripsy, that is, large-size stones C1 are removed by the traditional basket 02 formed by a plurality of metal wires, a large amount of stone chips C2 with smaller or even finer sizes still exist, the average diameter is generally smaller than 2mm, at the moment, a transparent tentacle-shaped capturing basket 2 made of flexible materials is arranged on the endoscope head 12, after a working channel is connected with a negative pressure device, the tentacle-shaped capturing basket cavity 20 synchronously generates negative pressure, small parts of stone chips C2 are adsorbed on part of the attraction holes 241, more stone chips C2 are attracted and retained in a plurality of tentacle gaps 240, and the attraction holes 241 which are not covered by the stone chips C2 or are not completely covered by the stone chips C2 still have water flow to pass through, so that the stone chips C2 can be attracted and retained in the tentacle gaps 240, and the inside of the scope sheath gaps 130 can be continuously supplied with water, so that the negative pressure attraction of dynamic water flow is realized; meanwhile, the function of reducing the internal pressure of the ureter and the renal pelvis is achieved, and particularly, a water source connected with the sheath gap 130 is provided under the premise of not remarkably pressurizing, for example, the sheath gap 130 is communicated with a flexible water bag hung outside the body at a certain height, water is supplied by means of gravity or the attractive force of a negative pressure device, the water quantity of the water flowing out of the body through the inner cavity 20 of the basket is captured by tentacles, the water quantity of the water can be automatically supplemented by the flexible water bag outside the body, and the water pressure of the flexible water bag is only the hydrostatic pressure of the flexible water bag when the negative pressure suction is not started, so that the high pressure of the ureter and the renal pelvis is not caused; and is more safe and reliable under the monitoring of the pressure sensor 102.

Fig. 1F, schematic diagram of the working principle of the tentacle-type capturing basket 2 within the renal pelvis P, the arrow direction indicating the direction of water flow when the negative pressure is on; the tentacle type capturing basket 2 is attracted by the active tracking type calculus chips C2 in a visual state, the rotating endoscope 1 can drive the tentacle type capturing basket 2 to synchronously rotate, so that the calculus chips C2 embedded on a mucous membrane can be easily brushed off, the clinical goal of calculus cleaning in an operation can be realized to the greatest extent, and postoperative complications such as infection, calculus recurrence and the like caused by the residual calculus chips C2 are avoided; the outer diameter or outer dimension of the tentacle-type capturing basket 2 is equal to or smaller than the inner diameter or inner dimension of the sheath lumen 31 accommodating the endoscope 1; when the tentacle type capturing basket 2 is positioned in the ureter and the renal pelvis P, the suction condition is observed in real time under the guidance of the endoscope 1, when the empty tentacle gap is not much left, the endoscope 1 can be retracted to the junction with the side branch inner cavity 340 of the sheath above the sheath outer opening 312 of the sheath tail 34 together with the tentacle type capturing basket 2, a negative pressure suction device communicated with the working channel 11 is stopped, a perfusion device is connected, the back flushing is carried out to enable the stone chips C2 adsorbed on the tentacle type capturing basket 2 to fall off, at the moment, the perfusion device communicated with the side branch inner cavity 340 of the sheath tail 34 is changed into the negative pressure suction device, and the stone chips C2 falling off from the tentacle type capturing basket 2 are sucked into the side branch inner cavity 340 of the sheath tail and then flow out from the side branch opening 313 of the sheath to be finally cleared; the tentacle type capturing basket 2 can be taken out and washed clean of the calculus chips C2 under the in-vitro sterile environment and then put into the body.

The curved shape of the tentacle-type capturing basket 2 (fig. 1J) is easier to access the lower or smaller renal calyx, and the tentacle-type capturing basket 2 of different shape and size can be replaced during surgery to meet clinical needs.

For more flexible and efficient operation, as shown in fig. 1G, 1H and 1I, the tail 23 of the tentacle type capturing basket 2 is connected with an elongated suction tube 232, the suction tube inner opening 2321 is connected with the proximal end opening 202 of the tentacle type capturing basket 2 so that the tentacle type capturing basket inner cavity 20 is communicated with the suction tube inner cavity 2320, the suction tube 232 penetrates out of the endoscope working channel outer opening 112 to be connected with an external suction tube joint J2, namely, the suction tube outer opening 2322 is connected with a negative pressure device, and the suction tube 232 penetrates out of the endoscope working channel outer opening 112 to be provided with a sealing body S2 so that a suction tube outer gap 1123 between the suction tube 232 and the working channel 11 is not communicated with the outside. Under the design, when in use, the outer opening 2322 of the suction tube is positioned outside the body, and the local part of the suction tube is provided with a connector J1 which is in butt joint with the suction tube connector J2 on the external negative pressure device; the sealing body S2 can be arranged on the suction tube 232 and connected with the suction tube 232 into a whole, and can be arranged in the outer opening 112 of the endoscope working channel, the preferred sealing body S2 is a hollow elastic member, the suction tube 232 can slide in the sealing body on the premise of ensuring sealing, the distal tentacle type capturing basket 2 can be driven to move forwards or backwards when the endoscope 1 is not moved, and the tentacle type capturing basket 2 can also be rotated, so that stone fragments can be cleaned more flexibly under the visual condition; when in use, the suction tube 232 is inserted into the outer opening 112 of the working channel of the endoscope, the head of the suction tube 232 is inserted into the connecting section 233 (fig. 1H) of the tentacle type capturing basket 2 after the head of the suction tube 232 protrudes out of the inner opening 111 of the working channel, the two are matched with each other in an easy-to-insert manner, the tentacle type capturing basket 2 is pulled out of the suction tube 232 after the use is finished, and then the suction tube 232 is pulled out of the outer opening 112 of the working channel; medicaments, including lubricious, diagnostic, therapeutic medicaments, may also be injected into the ureter, renal pelvis, renal calyx, through the elongate suction tube lumen 2320; an expansive, diagnostic, therapeutic gas may also be injected.

The distal opening 201 of the tentacle-type capturing basket 2 at the top end of the head 21 can absorb stone chips C2 deep in the renal calyx.

As shown in fig. 1E, the external dimensions of the top end region of the endoscope head 12 of the surgical system in this example are larger than those of the head 12 and the middle part at the rest, which is the endoscope 1 with the characteristic of "head general size", wherein when the endoscope head is matched with the sheath tube 3 with the same specification, the size of the top end region of the endoscope head 12 is unchanged and the main body is more slender, only the visual function and a working channel with a certain size are ensured, even the inner diameter of the working channel is reduced, and a larger sheath gap 130 is generated, so that water is more unobstructed; because the utility model is designed to absorb the stone fragments C2 which are difficult to clean by the traditional stone basket 02 in the laser lithotripsy operation into the tentacle-type capturing basket tentacle gap 240 and then clear the outside of the body, the enlargement of the scope sheath gap 130 ensures that dynamic water flow is critical, and a larger working channel 11 is not needed.

As shown in fig. 1F, when the present utility model is used in kidney stone surgery, a section adjacent to the opening 311 in the sheath 3 is a sheath bendable section, and or a section of the endoscope adjacent to the opening 111 in the working channel is an endoscope bendable section; the bendable section makes the endoscope difficult to have vision and operation dead angles in the renal pelvis and the renal calyx.

The tentacle type capturing basket 2, the external surface of the tentacle type capturing basket suction tube 232 and the internal surface of the endoscope working channel 11 are attached with a hydrophilic coating; the hydrophilic coating can be attached to the outer surface of the tentacle type capturing basket, and can also be arranged inside the tentacle type capturing basket, so that the friction force when the hydrophilic coating contacts with a ureter, a renal pelvis and a renal calyx can be obviously reduced after hydration, and mucous membrane injury is reduced; the hydrophilic coating is attached to the outer surface of the suction tube 232 and the inner surface of the working channel 11, which are connected to the tentacle-type capturing basket 2, so that the resistance when the tentacle-type capturing basket 2 slides can be reduced, and the tentacle-type capturing basket 2 can be easily driven to move forwards, backwards and rotate.

The positions of the various tube bodies described in the utility model describe that the head faces the far end part, and the tube bodies enter 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 a distal opening, and is positioned in the body when in use; the outer opening is a proximal opening, and is positioned outside the body when in use; "forward" is in the distal direction and "backward" is in the proximal direction; "upper", "front" are distally directed; "lower", "rear" are proximally directed.

Example 2:

As shown in fig. 2A and 2B, the main body head 21 of the stone tentacle type capturing basket 2 of this embodiment is provided with a distal opening 201, a plurality of tentacles 24 extending axially are arranged around the distal opening 201, and during stone cleaning, water flows are poured into the renal pelvis P through the sheath gap 130 or a water inlet channel (not shown) provided on the endoscope 1, the tentacle type capturing basket 2 is communicated with external negative pressure, water flows enter the capturing basket inner cavity 20 from the distal opening 201, and negative pressure water flows pass through the tentacle gap 240 extending axially at the distal opening 201, so that stone fragments C2 deep in the renal pelvis and the renal calyx are easily adsorbed.

One lens 10, two optical windows 101 located at the tip 121 of the head 12 of the endoscope 1; the pressure sensor 102 can monitor the pressure when the negative pressure is opened, so that the kidney is prevented from being damaged by low pressure; the temperature sensor can monitor temperature change in the stone crushing process, so that high-temperature damage is avoided.

Example 3:

As shown in fig. 3A, 3B and 3C, the main body of the tentacle type capturing basket 2 of the embodiment 3 is provided with a front-extending type adsorbing body 245 positioned on the head 21, the front-extending type adsorbing body 245 is formed by narrowing the front-extending type adsorbing body 245 toward the tentacle type capturing basket inner cavity 20 in a funnel shape or a bowl shape at the position of the distal opening 201 of the tentacle type capturing basket with larger size, the inner space 2450 of the front-extending type adsorbing body 245 is communicated with the tentacle type capturing basket inner cavity 20 through the neck opening 2451, and the size of the neck opening 2451 of the front-extending type adsorbing body 245 is smaller than that of the proximal opening 202 of the tentacle type capturing basket; the tentacle type capturing basket tail 23 is provided with a connecting section 233 which is sleeved on the head of the suction tube 232, and an opening 2321 in the suction tube is communicated with the capturing basket inner cavity 20; when the forward extending type adsorbing body 245 finds the stone chips C2 piled in front of the lens on the basis of visualization, the forward extending type adsorbing body has higher adsorption efficiency, not only can adsorb the stone chips C2 with smaller retention size, but also can adsorb the stone chips C1 with larger size, and also plays the role of the basket 02 in the prior art, but also makes up for the difficulty in capturing the stone chips C2 with larger size in front of the lens, especially in front of the lens of the conventional basket 02, and the effect of cleaning the stone chips C2 can be remarkably improved by the aid of the negative pressure suction of the far end opening 201 of the capturing basket.

Under the action of the negative pressure water flow, the stone fragments C1 and C2 adjacent to the head 21 are sucked into the forward-extending adsorbent cavity 2450 from the distal opening 201 of the tentacle-type capturing basket, and the size of the neck opening 2451 of the forward-extending adsorbent 245 is smaller than that of the inner cavity 20 of the tentacle-type capturing basket and the size of the proximal opening 202, so that the stone fragments C1 and C2 with the size larger than that of the neck opening 2451 are more likely to be blocked in the neck opening 2451 and gradually accumulated and retained in the forward-extending adsorbent cavity 2450; the stone chips C2 with the size smaller than the neck opening 2451 enter the tentacle-type capturing basket inner cavity 20 along with the negative pressure water flow, then enter the suction tube inner cavity 2320, and finally are cleared out of the body through the suction tube outer opening 2322; the peripheral stone chips C2 are sucked into the tentacle gap 240; because of the external gap 1123, the suction tube 232 can move up and down in the working channel 11 of the endoscope 1 and can also rotate left and right, so that the tentacle type capturing basket 2 is conveniently driven to adjust the position to accurately absorb the stone fragments C2.

Example 4:

As shown in fig. 4A and 4B, the tentacle type capturing basket 2 is provided with a branch 244 on a part of the tentacle 24, the branch 244 can extend horizontally or obliquely upward and downward, and the figure is partially enlarged to ensure that the stone chips C2 are blocked in the tentacle gap 240 and are further restrained by the branch 244, and the stone chips C2 further restrained by the branch 244 are not easily separated from the tentacle type capturing basket 2 even without negative pressure when the tentacle type capturing basket 2 moves.

Example 5:

Fig. 5A and 5B show that the hollow tentacle 246 of the tentacle capturing basket 2 of embodiment 5, the hollow tentacle 246 has a hollow tentacle outer opening 2461 facing the external environment and an inner opening 2462 communicating with the capturing basket inner cavity 20, the hollow tentacle inner cavity 2460 is a negative pressure passage, the hollow tentacle outer opening 2461, the tentacle gap 240 and the suction hole 241 at the tentacle root of the tentacle capturing basket 2 form a three-in-one three-dimensional space for absorbing and retaining stone fragments C2, and fine stone fragments with different sizes are easy to be absorbed and retained.

The urinary calculus capturing basket and the calculus operation system can also be used for removing biliary calculus or calculus, blood clot, secretion, pathological tissues and the like of other natural cavities.

Claims (10)

1. Urinary calculus tentacle type capturing basket (2), the main part is the straight or crooked bag strip body that has inner chamber (20), tentacle type capturing basket (2) inner chamber (20) are equipped with proximal end opening (202), its characterized in that: a plurality of straight rod-shaped and/or bent rod-shaped tentacles (24) are stretched out from the main body of the tentacle type capturing basket (2), tentacle gaps (240) are reserved among the tentacles (24), a plurality of suction holes (241) capable of adsorbing stone fragments (C2) are formed in the root portion of the tentacle (24), namely, the area near the connection position of the tentacle (24) and the main body of the tentacle type capturing basket (2), the suction holes (241) are communicated with the inner cavity (20) of the tentacle type capturing basket (2), and the proximal opening (202) of the inner cavity of the tentacle type capturing basket is communicated with an external negative pressure device directly or through a suction tube (232).

2. The urinary calculus tentacle capturing basket of claim 1 wherein the tentacle capturing basket (2) body and tentacle (24) are flexible, the tentacle (24) being rod-shaped with or without branches (244); the overall shape of the tentacle type capturing basket (2) connected with the flexible tentacles (24) is one of worm shape, caterpillar shape with tapered distal end, middle expanded cyst strip, distal end expanded cyst strip and bifurcated cyst strip.

3. The urinary calculus tentacle capturing basket of claim 1, wherein the tentacle capturing basket (2) is provided with indentations including, but not limited to, one or more of axial groove-like indentations (243), continuous or intermittent screw-like indentations, continuous or intermittent radial circumferential indentations, or crater-like indentations.

4. Urinary calculus tentacle capturing basket according to claim 1, characterized in that the tentacle capturing basket (2) is transparent or at least the area corresponding to the optical assembly of the head tip (121) of the endoscope (1).

5. Urinary stone tentacle capturing basket according to claim 1, characterized in that an elongated suction tube (232) is connected to the proximal opening (202) of the tentacle capturing basket (2), the suction tube (232) is threaded out from the outer opening (112) of the endoscope working channel, the suction tube outer opening (2322) is connected to the suction tube connector (J2) of the external negative pressure device, and the suction tube (232) is provided with a sealing body (S2) from the outer opening (112) of the endoscope working channel, so that the gap (1123) between the suction tube (232) and the working channel (11) is not in communication with the outside of the body.

6. A urinary calculus tentacle capturing basket according to claim 1, characterized in that the tentacle capturing basket (2) head (21) is provided with a distal opening (201), the distal opening (201) being in direct communication with the tentacle capturing basket lumen (20); or the tentacle type capturing basket (2) is provided with an endocytosis type or forward extending type adsorbing body (245), the far-end opening (201) is positioned on the endocytosis type or forward extending type adsorbing body (245), the far-end opening (201) is in a funnel shape and is narrowed towards the tentacle type capturing basket inner cavity (20), and the funnel-shaped forward extending type adsorbing body inner space (2450) is communicated with the tentacle type capturing basket inner cavity (20) through the forward extending type adsorbing body neck opening (2451).

7. Urinary calculus tentacle capturing basket according to claim 1, characterized in that the maximum size of the suction holes (241) in the tentacle capturing basket (2) is smaller than the cross-sectional size of the endoscope working channel (11) or associated suction tube lumen (2320).

8. The urinary stone tentacle capturing basket according to claim 1, characterized in that at least a part of the tentacles (24) on the tentacle capturing basket (2) is hollow, and the hollow tentacle inner cavity (2460) is provided with a hollow tentacle outer opening (2461) facing the external environment and a tentacle inner opening (2462) communicating with the tentacle capturing basket inner cavity (20).

9. The urinary calculus tentacle capturing basket of claim 1 wherein at least one of the tentacle capturing basket (2), tentacle (24), tentacle capturing basket suction tube (232) outer surface, endoscope working channel (11) inner surface is attached with a hydrophilic coating.

10. A urinary stone surgical system comprising the tentacle capturing basket (2) of any one of claims 1-9, further comprising at least one of a generally small head endoscope (1), a sheath (3), a perfusion device, a lithotripsy fiber, a negative pressure suction device, a pressure sensor, a temperature sensor, a water bag, a guidewire.