A flushing device and flushing method for visual transurethral resection of bladder tumors

Abstract

This application relates to the field of bladder irrigation, and specifically discloses an irrigation device for visual transurethral resection of bladder tumors, which is arranged at one end of a catheter to connect the catheter with the bladder; it includes: a cylinder body with a piston cavity; a storage body with a chamber; a connecting piece fixedly arranged at one end of the catheter; a piston slidably arranged in the piston cavity; a sieving assembly arranged in the chamber to filter tumor tissues; wherein, an endoscope is arranged on the catheter to observe the internal condition of the bladder; the connecting piece has a joint inserted into the catheter nozzle to connect the catheter; the storage body is arranged on the cylinder body and is inserted into the connecting piece together with one end of the cylinder body to form a fixation; a first one-way valve communicating with the chamber and a second one-way valve communicating with the piston cavity are arranged in the connecting piece; a communication port is formed between the opposite parts of the inner wall of the piston cavity and the inner wall of the chamber to communicate the piston cavity and the chamber; the beneficial effect of this application lies in providing an irrigation device for visual transurethral resection of bladder tumors with a sieving function.

Description

Technical Field

[0001] The present application relates to the field of bladder irrigation, and particularly to an irrigation device for visual transurethral resection of bladder tumors. Background Art

[0002] Clinically, when dealing with transurethral resection of bladder tumors, it is necessary to irrigate blood clots, chopped tissue pieces, and stone debris in the bladder. Currently, when performing bladder irrigation, continuous irrigation fluid is required to ensure water circulation, and then a piston tube is connected, and the inside of the bladder is aspirated by means of a piston; among them, when aspirating, a part of the tissue pieces and irrigation fluid will be aspirated into the piston tube together; at this time, if the number of tissue pieces in the piston tube is small and the irrigation fluid is more, the liquid and tissue pieces in the piston tube will be injected into the bladder again or part of the irrigation fluid will be injected into the bladder and the tissue pieces will be left in the piston tube; but no matter how it is operated, the tissue pieces that have been aspirated will be injected into the bladder again, on the one hand, increasing the risk of infection, and on the other hand, increasing the workload.

[0003] Therefore, it is necessary to design an irrigation device for transurethral resection of bladder tumors that can automatically filter tumor tissues when aspirating tumor tissues and also ensure water circulation. Summary of the Invention

[0004] In order to improve the problem that currently, when aspirating tumor tissues after transurethral resection of bladder tumors, it is impossible to actively screen tumor tissues through the form of a piston, resulting in some tissues returning to the bladder again, the present application provides an irrigation device for visual transurethral resection of bladder tumors.

[0005] An irrigation device for visual transurethral resection of bladder tumors provided by the present application is arranged at one end of a catheter to communicate the catheter with the bladder; the following technical solutions are adopted: it includes: a cylinder body having a piston cavity;

[0006] A storage body having a chamber;

[0007] A connecting piece fixedly arranged at one end of the catheter;

[0008] A piston slidably arranged in the piston cavity;

[0009] A sieving assembly arranged in the chamber to filter tumor tissues;

[0010] Among them, an endoscope is provided on the catheter to observe the internal condition of the bladder; the connecting member has a joint inserted into the catheter nozzle to connect the catheter; the storage body is provided on the cylinder body and is inserted into the connecting member together with one end of the cylinder body to form a fixation; a first one-way valve communicating with the chamber and a second one-way valve communicating with the piston chamber are provided in the connecting member; a communication port is formed between the opposite parts of the inner wall of the piston chamber and the inner wall of the chamber to communicate the piston chamber and the chamber; the sieving assembly includes a loading frame and a filtering member, and the loading frame is provided in the chamber; the filtering member is fixedly provided on the loading member.

[0011] When sucking the tumor tissue in the bladder, the specific position of the tumor tissue in the bladder can be observed through the endoscope, improving the accuracy of suction; through the setting of the sieving assembly, the sucked tumor tissue can be filtered to filter the internal physiological saline for circulation; among them, through the setting of the filtering member, the collection of tumor tissue can be realized during filtering, improving the collection effect; through the setting of the storage body, the tumor tissue can exist alone in the chamber, which is convenient for treatment after suction.

[0012] Optionally, the sieving assembly further includes:

[0013] A moving member, slidably provided in the chamber;

[0014] A first magnetic attracting member, fixedly provided on the moving member;

[0015] A second magnetic attracting member, oppositely arranged on the piston relative to the first magnetic attracting member;

[0016] Among them, the loading frame is fixedly provided on the moving member; a third one-way valve is provided on the loading frame, and the filtering member is located between the first one-way valve and the third one-way valve.

[0017] Optionally, a fourth one-way valve is provided on the piston;

[0018] Among them, the first one-way valve and the third one-way valve only allow liquid to flow in the first direction;

[0019] The second one-way valve and the fourth one-way valve only allow liquid to flow in the second direction.

[0020] Optionally, one end of the cylinder body away from the connecting member has a piston tube;

[0021] A push-pull rod is movably arranged in the piston tube;

[0022] Among them, a piston rod connected to the push-pull rod is provided on the piston.

[0023] Optionally, a connecting sleeve for connecting the storage body and the piston tube is provided on the piston tube;

[0024] The inner wall of one end of the connecting sleeve close to the storage body forms a clamping groove, and a first clamping block corresponding to the clamping groove is formed on the side wall of the storage body;

[0025] Among them, the card slot is located at the end of the connecting sleeve near the first clamping block along the extension part in the first direction, and the extension part extends along the circumferential direction of the connecting sleeve.

[0026] Optionally, a second clamping block is formed on the surface of the piston tube at a position opposite to the first clamping block;

[0027] The part at the port of the connecting sleeve away from the card slot is concave inward along the second direction, and the side wall part of the concave inward part extends along the circumferential direction of the connecting sleeve; and the bottom wall of the circumferential extension part is further concave inward along the second direction to form a stepped groove;

[0028] Among them, the extending direction of the stepped groove in the circumferential direction of the connecting sleeve is opposite to the extending direction of the card slot in the circumferential direction of the connecting sleeve.

[0029] Optionally, a sealing plate is movably arranged on one side of the cylinder body and located at the communication hole;

[0030] A limiting strip is formed on the sealing plate, and a fitting groove is formed on the part of the bin body corresponding to the limiting strip;

[0031] Among them, the sealing plate is movably arranged on the cylinder body, and the surface completely covers the communication hole formed by the cylinder body.

[0032] Optionally, the connecting piece forms a connecting cavity to connect the bin body and the cylinder body;

[0033] An installation plate for installing a first one-way valve and a second one-way valve is arranged on the inner wall of the connecting cavity;

[0034] Among them, the joint is arranged opposite to the first one-way valve.

[0035] Optionally, a water injection port communicated with the piston cavity is further arranged on the surface of the cylinder body.

[0036] Specifically, a flushing method for visual transurethral resection of bladder tumors is applied to the above-mentioned flushing device for visual transurethral resection of bladder tumors, and includes the following steps:

[0037] S1. Fix the bin body on the cylinder body through the connecting sleeve, and then embed the joint into the catheter to form a connection; penetrate the position of the tumor tissue in the bladder through the endoscope, and start to aspirate the tumor tissue;

[0038] S2. Pull the push rod along the first direction to make the piston move along the first direction, and the moving part moves synchronously under the action of magnetic suction; at this time, the tumor tissue in the bladder is sucked into the chamber; and the normal saline enters the piston cavity;

[0039] S3. Push the push rod along the second direction to move the piston along the second direction. Under the action of the magnetic force, the moving part moves synchronously. At this time, the piston can inject the physiological saline in the piston chamber into the catheter. In the chamber, the tumor tissue flows towards the third one-way valve and will be screened by the filtering part.

[0040] S4. Rotate and pull the connecting sleeve along the first direction to detach the bin from the cylinder, and then the extracted tumor tissue can be cleaned.

[0041] In summary, the present application includes at least one of the following beneficial technical effects:

[0042] 1. By providing a separable bin, it is convenient to clean after sucking the tumor tissue, improving convenience.

[0043] 2. By providing the first magnetic attraction part and the second magnetic attraction part, the screening component can be driven to move synchronously when driving the piston, so as to cooperate with the separable bin and improve the operation convenience of the flushing device.

[0044] 3. By providing the filtering part, after filtering the tumor tissue, it can deform with the movement of the moving part to wrap part of the tumor tissue, and then the tumor tissue accumulates due to its own adhesiveness, which is beneficial to subsequent cleaning.

[0045] 4. By providing the connecting sleeve, the bin can be conveniently detached and removed through the cooperation of the card slot and the stepped groove. Description of the Drawings

[0046] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0047] Figure 2 is the overall structural schematic diagram of the flushing device of the embodiment of the present application;

[0048] Figure 3 is the overall half-sectional structural schematic diagram of the flushing device of the embodiment of the present application;

[0049] Figure 4 is Figure 3 the partial enlarged view in;

[0050] Figure 5 is the structural schematic diagram of the screening component of the embodiment of the present application;

[0051] Figure 6 is the exploded structural schematic diagram of the screening component of the embodiment of the present application;

[0052] Figure 7 is the structural schematic diagram of the piston and the piston rod of the embodiment of the present application;

[0053] Figure 8 It is a schematic half-sectional structure diagram of the connecting piece in the embodiment of the present application;

[0054] Figure 9 It is an exploded structure diagram of the connecting piece and the mounting plate in the embodiment of the present application;

[0055] Figure 10 It is an overall exploded structure diagram of the bin body and the cylinder body in the embodiment of the present application;

[0056] Figure 11 It is an overall structure diagram of the connecting sleeve and the card slot in the embodiment of the present application;

[0057] Figure 12 It is an overall structure diagram of the connecting sleeve and the stepped groove in the embodiment of the present application.

[0058] Reference numerals:

[0059] 100, irrigation device for visual transurethral resection of bladder tumors; 101, catheter; 1, cylinder body; 2, bin body; 3, connecting piece; 4, piston; 5, sieving assembly; 6, piston cavity; 7, cavity opening; 8, chamber; 9, inlet; 10, window; 11, connecting cavity; 12, joint; 13, endoscope; 14, mounting plate; 15, first one-way valve; 16, second one-way valve; 17, inclined surface; 18, loading frame; 19, filter element; 20, closing plate; 21, third one-way valve; 22, fourth one-way valve; L, first direction; N, second direction; 23, moving part; 24, first magnetic attracting part; 25, second magnetic attracting part; 26, communication port; 27, water injection port; 28, piston tube; 29, push-pull rod; 31, piston rod; 32, notch; 33, connecting sleeve; 34, card slot; 35, first clamping block; 36, stepped groove; 37, second clamping block; 38, sealing plate; 39, limiting strip; 40, embedding groove. Detailed implementation manners

[0060] Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the accompanying drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0061] In addition, it should be noted that for the sake of convenience of description, only parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0062] It should be noted that the concepts such as "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0063] It should be noted that the modifications of "one" and "multiple" mentioned in this disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".

[0064] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0065] Embodiment 1

[0066] Refer to Figures 1 to 12 ; An irrigation device 100 for visual transurethral resection of bladder tumors according to an embodiment of the present application is provided at one end of a catheter 101 to communicate with the catheter 101 and the bladder; it includes: a cylinder 1, a storage body 2, a connecting member 3, a piston 4, and a sieving assembly 5; specifically, the cylinder 1 is made of stainless steel metal to form a piston cavity 6; the cross-sectional contour of the piston cavity 6 along the diameter direction of the cylinder 1 is semi-circular and one end has an orifice 7 leading into the internal space of the piston cavity 6; the storage body 2 is made of stainless steel metal and its outer contour is semi-circular; it is arranged on the cylinder 1 to form an irrigation device with a cylindrical outer contour together with the cylinder 1; the storage body 2 has a chamber 8 with the same capacity as the piston cavity 6, and the storage body 2 has an inlet 9 leading into the internal space of the chamber 8; more specifically, visual windows 10 are provided on both the cylinder 1 and the storage body 2 to be able to observe the internal conditions of the piston cavity 6 and the chamber 8; the visual windows 10 are installed with transparent glass plates for sealing.

[0067] Specifically, the connecting member 3 forms a connecting cavity 11; wherein, the connecting member 3 has a joint 12 that can insert one end of the catheter 101; the joint 12 communicates with the connecting cavity 11; one end of the cylinder 1 where the orifice 7 is located and one end of the storage body 2 where the inlet 9 is located are inserted into the connecting cavity 11 together to form a fixed connection; more specifically, a sealing ring is provided between the inner wall of the connecting cavity 11 and the cylinder 1, and the sealing ring is made of rubber to improve the sealing effect.

[0068] Specifically, an endoscope 13 is provided on the catheter 101; wherein, the endoscope 13 forms a visual dilator through a guiding needle and a sheath tube, and the outer sheath tube can adjust the bending length of the flexible sheath section; thus, visualization can be achieved, which is convenient for doctors to clearly understand the tumor tissues cut off in the bladder during the operation; the convenience of cleaning is improved; understanding the internal conditions of the human body through the endoscope 13 during the operation is a conventional means in current operations, and this application does not make improvements and innovations on this technology, so the specific structure and principle of the endoscope 13 will not be described in detail in this application.

[0069] Specifically, a mounting plate 14 is detachably arranged on the inner wall of the connecting cavity 11, and the mounting method can be connection by means of buckles for easy disassembly and assembly; the ends of the cylinder body 1 and the bin body 2 are in contact with the surface of the mounting plate 14; the side of the mounting plate 14 is connected to the inner wall of the connecting cavity 11 through a sealing ring to improve the sealing performance; in a more specific embodiment, two through holes respectively communicating with the inlet 9 and the cavity opening 7 are formed on the mounting plate 14; a first one-way valve 15 corresponding to the inlet 9 and a second one-way valve 16 corresponding to the cavity opening 7 are respectively installed on the two through holes; wherein, the joint 12 is oppositely arranged with respect to the through hole where the first one-way valve 15 is located; more specifically, an inclined surface 17 is formed between the second one-way valve 16 and the joint 12 in the connecting cavity 11, and the inclined surface 17 can guide the liquid to flow from the second one-way valve 16 to the joint 12; it can be understood that when the mixture of the tumor tissue cut by electrocision and normal saline enters the connecting cavity 11 through the joint 12, due to the action of the inclined surface 17, the liquid will more easily enter the inlet 9 through the first one-way valve 15; when the liquid comes out from the cavity opening 7, it will more easily enter the joint 12 due to the guiding action of the inclined surface 17.

[0070] In another more specific embodiment, a sieving assembly 5 for sieving tumor tissue is provided in the chamber 8; wherein, the sieving assembly 5 includes a loading frame 18 and a filtering member 19; the loading frame 18 is slidably arranged in the cavity along the first direction L of the cylinder body 1; a closing plate 20 is formed at one end of the loading frame 18 away from the connecting member 3; a through hole is formed on the closing plate 20, and a third one-way valve 21 is arranged in the through hole; thus arranged, when the loading frame 18 moves along the first direction L, a negative pressure can be formed in the space between the loading frame 18 and the connecting member 3, so as to suck the tumor tissue in the bladder into the chamber 8; the filtering member 19 is a gauze with filter holes; more specifically, the gauze can deform under the reciprocating movement of the loading frame 18 and along with the fluctuation of the liquid, so that the gauze can wrap the tumor tissue during the filtering of the tumor tissue for convenient later collection;

[0071] In a more specific embodiment, a piston 4 is slidably arranged in the piston chamber 6. When the piston 4 moves along the second direction N of the cylinder body 1, a thrust can be generated on the internal space of the piston chamber 6 between the piston 4 and the connection, and the normal saline is injected into the connecting cavity 11 through the second one-way valve 16; wherein, a through hole is formed on the piston 4, and a fourth one-way valve 22 is arranged on the inner wall of the through hole;

[0072] More specifically, the sieving assembly 5 further includes: a moving member 23, a first magnetic member 24, and a second magnetic member 25; specifically, the moving member 23 is movably disposed in the chamber 8 for mounting the loading frame 18; a first magnetic member 24 is fixedly disposed on one side of the moving member 23 close to the piston chamber 6; a second magnetic member 25 is fixedly disposed on one side of the piston 4 close to the chamber 8; wherein, both the first magnetic member 24 and the second magnetic member 25 are permanent magnets and can generate a magnetic attraction force that attracts each other;

[0073] Specifically, a communication port 26 is formed between the opposing portions of the inner wall of the piston chamber 6 and the inner wall of the chamber 8 to communicate the piston chamber 6 and the chamber 8; the first one-way valve 15 and the third one-way valve 21 only allow liquid to flow in the first direction L; the second one-way valve 16 and the fourth one-way valve 22 only allow liquid to flow in the second direction N; wherein, referring to Figure 3 , both the first direction L and the second direction N are the linear directions of the first straight line;

[0074] In summary, after the connector 12 is inserted into the catheter 101 to form a connection, first, the piston 4 is driven to move along the first direction L. Under the action of the magnetic attraction force, the moving member 23 also moves along the second direction N; at this time, the first one-way valve 15 opens, and the third one-way valve 21 closes; the second one-way valve 16 closes, and the fourth one-way valve 22 opens; the tumor tissue is sucked into the chamber 8 through the first one-way valve 15 and is located on the left side of the moving member 23; at the same time, the physiological saline on the right side of the piston 4 enters the left side of the piston 4 through the fourth one-way valve 22; this process can extract the tumor tissue in the bladder into the chamber 8;

[0075] Then, the piston 4 is pushed to slide along the second direction N. Under the action of the magnetic attraction force, the moving member 23 also moves along the second direction N; at this time, the first one-way valve 15 closes, and the third one-way valve 21 opens; the second one-way valve 16 opens, and the fourth one-way valve 22 closes; thus, in the chamber 8, the tumor tissue and the liquid enter the right side of the flow member through the third one-way valve 21, and the tumor tissue is sieved by the filter member 19 during the flow; in the piston chamber 6, the movement of the piston 4 injects the physiological saline on the left side of the piston 4 into the catheter 101 through the second one-way valve 16; at the same time, when the piston 4 moves along the second direction N, a negative pressure is generated in the space of the piston chamber 6 on the right side of the piston 4, which can suck the physiological saline on the right side of the moving member 23 in the chamber 8 into the piston chamber 6 through the communication port 26; thus, a cycle is formed to reuse the physiological saline; specifically, a filter net is fixedly disposed at the notch of the communication port 26 to filter again during the circulation of the physiological saline, and further prevent the tumor tissue from being pushed into the bladder.

[0076] More specifically, a water injection port 27 communicating with the piston chamber 6 is also provided on the surface of the cylinder body 1; the water injection port 27 is communicated with an external pipeline, and can continuously inject physiological saline into the piston chamber 6; thus, the volume of physiological saline can be guaranteed during operation; and the loss of physiological saline during use can be avoided.

[0077] In a more specific embodiment, a piston tube 4 is fixedly connected / formed integrally at one end of the cylinder body 1 away from the connecting member 3; a push rod 29 is movably arranged in the piston tube 4, and a pulling block is formed at one end of the push rod 29 located in the piston tube 4; a piston rod 4 is integrally formed at one end of the piston 4 close to the pull rod, and the piston rod 4 extends along the second direction N and is fixedly connected to the pulling block; wherein, the fixed connection method is a threaded connection; it can be understood that the doctor can control the movement of the piston 4 by pulling the push rod.

[0078] On this basis, a notch 32 is formed on the side of the piston tube 4 close to the bin body 2 and corresponding to the bin body 2 along the first direction L; a connecting sleeve 33 for fixing the bin body 2 is arranged at the part located in the notch 32; specifically, a clamping groove 34 is formed on the inner wall of one end of the connecting sleeve 33 close to the bin body 2; at the part of the connecting sleeve 33 close to the bin body 2 and extending along the first direction L, and the extending part further extends along the circumferential direction of the connecting sleeve 33; it can be understood that the clamping groove 34 is L-shaped on the inner wall of the connecting sleeve 33; a first clamping block 35 corresponding to the clamping groove 34 is formed on the surface of the bin body 2 away from the connecting member 3, and after the first clamping block 35 is inserted into the clamping groove 34 along the first direction L and then rotated to the connecting sleeve 33, the bin body 2 can be limited in the first direction L / second direction N;

[0079] Specifically, a stepped groove 36 is formed at the end of the connecting sleeve 33 opposite to the clamping groove 34, and the stepped groove 36 is a part recessed along the second direction N at the port part of the connecting sleeve 33 away from the clamping groove 34, and part of the side wall of the recessed part further extends along the circumferential direction of the connecting sleeve 33; and the bottom wall of the part extending along the circumferential direction is further recessed along the second direction N; it can be understood that the inner wall of the connecting sleeve 33 is stepped; the extending direction of the stepped groove 36 in the circumferential direction of the connecting sleeve 33 is opposite to the extending direction of the clamping groove 34 in the circumferential direction of the connecting sleeve 33; wherein, a second clamping block 37 is formed at the position on the surface of the piston tube 4 opposite to the first clamping block 35;

[0080] With the above solution, when in use, the bin body 2 is placed on the cylinder body 1, then the first clamping block 35 is snapped into the clamping groove 34, and the second clamping block 37 is snapped into the stepped groove 36; then the connecting sleeve 33 is rotated to first limit the first clamping block 35 and the clamping groove 34 in the first direction L / the second direction N; then the connecting sleeve 33 is pushed along the second direction N. At this time, the connecting sleeve 33 can drive the bin body 2 to move along the second direction N; so that one end of the bin body 2 with the inlet 9 is embedded into the connecting cavity 11; at this time, the connecting sleeve 33 is further rotated, and the second clamping block 37 moves along the circumferential extension trajectory of the stepped groove 36. Finally, the connecting sleeve 33 is pushed again. On the one hand, it can make the bin body 2 further embedded into the connecting member 3, and on the other hand, it can limit the second clamping block 37 in the circumferential direction; in this way, the disassembly and assembly of the bin body 2 can be facilitated, and the convenience can be improved.

[0081] On this basis, a sealing plate 38 is movably arranged on one side of the cylinder body 1 and located at the communication port 26; specifically, a limiting strip 39 is formed on the sealing plate 38, and a fitting groove 40 is formed on the part of the bin body 2 corresponding to the limiting strip 39; the limiting strip 39 can be embedded into the fitting groove 40 so that the bin body 2 can drive the sealing plate 38 to move when moving along the first direction L / the second direction N to realize the sealing of the communication port 26; with such a setting, after sucking the tumor tissue for a period of time, it is necessary to clean the tumor tissue. In this way, it can prevent the physiological saline in the piston cavity 6 from leaking out of the communication port 26 after the bin body 2 is removed.

[0082] Embodiment 2

[0083] A flushing method for visual transurethral resection of bladder tumors, which is applied to a flushing device for visual transurethral resection of bladder tumors described in the above Embodiment 1, includes the following steps:

[0084] S1. After the bin body 2 is fixed on the cylinder body 1 through the connecting sleeve 33 to form the flushing device 100, then the joint 12 is embedded into the catheter 101 to form a connection; the endoscope 13 penetrates through the position of the tumor tissue in the bladder, and starts to suck the tumor tissue; an external pipeline is connected to the water injection port 27 so that physiological saline can enter the piston cavity 6; then start to suck the tumor tissue;

[0085] S2. Pull the push rod 29 along the first direction L to make the piston 4 move along the first direction L. Under the action of magnetic suction, the moving part 23 moves synchronously; at this time, the first one-way valve 15 is opened, and the tumor tissue in the bladder is sucked into the chamber 8; and the physiological saline enters the piston cavity 6; the fourth one-way valve 22 is opened, so that the physiological saline flows to the left side of the piston 4;

[0086] S3. Push the push rod 29 in the second direction N to move the piston 4 in the second direction N. Under the action of the magnetic force, the moving part 23 moves synchronously. At this time, the second one-way valve 16 opens, and the piston 4 can inject the physiological saline in the piston chamber 6 into the catheter 101. In the chamber 8, the third one-way valve 21 opens, and the mixture of the tumor tissue and the physiological saline flows in the direction of the third one-way valve 21, and the tumor tissue will be screened by the filtering part 19. The physiological saline passes through the electric three-way one-way valve 21 and enters the right side of the chamber 8 where the third one-way valve 21 is located, and enters the piston chamber 6 along the communication port 26.

[0087] S4. Rotate and pull the connecting sleeve in the first direction L to detach the housing 2 from the cylinder 1, and then the extracted tumor tissue can be cleaned up.

[0088] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0089] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A flushing device for visual transurethral resection of bladder tumors, which is arranged at one end of a catheter to connect the catheter with the bladder; characterized in that, Comprising: A cylinder body having a piston chamber; A bin body having a chamber; A connecting member fixedly provided at one end of the catheter; A piston slidably provided in the piston chamber; A sieving assembly provided in the chamber to filter tumor tissues; Wherein, an endoscope is provided on the catheter to observe the internal condition of the bladder; the connecting member has a joint inserted into the catheter orifice to communicate with the catheter; the bin body is provided on the cylinder body and is inserted into the connecting member together with one end of the cylinder body to form a fixed connection; a first one-way valve communicating with the chamber and a second one-way valve communicating with the piston chamber are provided in the connecting member; a communication port is formed by partial opposition of the inner wall of the piston chamber and the inner wall of the chamber to communicate the piston chamber and the chamber; the sieving assembly includes a loading frame and a filtering member, the loading frame is provided in the chamber; the filtering member is fixedly provided on the loading frame to sieve the tumor tissues after electrocision; the filtering member is a gauze with filter holes; The sieving assembly further includes: A moving member slidably provided in the chamber; A first magnetic member fixedly provided on the moving member; A second magnetic member oppositely provided on the piston with respect to the first magnetic member; Wherein, the loading frame is fixedly provided on the moving member; a third one-way valve is provided on the loading frame, and the filtering member is located between the first one-way valve and the third one-way valve; A sealing plate is movably provided on the cylinder body and on one side of the communication port; A limiting strip is formed on the sealing plate, and a corresponding fitting groove is formed on the part of the bin body corresponding to the limiting strip; Wherein, the sealing plate is movably provided on the cylinder body, and the surface completely covers the communication port formed by the cylinder body; A fourth one-way valve is provided on the piston; Wherein, the first one-way valve and the third one-way valve only allow liquid to flow in a first direction; The second one-way valve and the fourth one-way valve only allow liquid to flow in a second direction.

2. The flushing device for visual electrocision of bladder tumors according to claim 1, characterized in that: One end of the cylinder body away from the connecting member has a piston tube; A push rod is movably provided in the piston tube; Wherein, a piston rod connected to the push rod is provided on the piston.

3. The flushing device for visual electrocision of bladder tumors according to claim 2, characterized in that: A connecting sleeve for connecting the bin body and the piston tube is provided on the piston tube; A clamping groove is formed on the inner wall of one end of the connecting sleeve close to the bin body, and a first clamping block corresponding to the clamping groove is formed on the side wall of the bin body; Wherein, the clamping groove is located at the extending part of the end of the connecting sleeve close to the first clamping block along the first direction, and the extending part extends along the circumferential direction of the connecting sleeve; A second clamping block is formed on the surface of the piston tube at a position opposite to the first clamping block; Part of the port of the connecting sleeve away from the clamping groove is recessed inward along the second direction, and the side wall of the recessed part extends along the circumferential direction of the connecting sleeve; and a stepped groove is formed on the bottom wall of the circumferentially extending part and then recessed inward along the second direction; Wherein, the extending direction of the stepped groove in the circumferential direction of the connecting sleeve is opposite to the extending direction of the clamping groove in the circumferential direction of the connecting sleeve.

4. The flushing device for visual transurethral resection of bladder tumors according to claim 1, characterized in that: The connecting member forms a connecting cavity to connect the bin body and the cylinder body; The inner wall of the connecting cavity is provided with a mounting plate for arranging the first one-way valve and the second one-way valve; Wherein, the joint is arranged opposite to the first one-way valve.

5. The flushing device for visual transurethral resection of bladder tumors according to claim 1, characterized in that: The surface of the cylinder body is further provided with a water injection port communicated with the piston cavity.

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