Flushing device and flushing method for visual bladder tumor electric resection operation

Abstract

The invention relates to the field of bladder irrigation, and particularly discloses a visual irrigation device for bladder tumor electric resection, which is arranged at one end of a catheter to communicate the catheter with a bladder. Comprising a cylinder with a piston cavity; the bin body is provided with a cavity; the connecting piece is fixedly arranged at one end of the conduit; the piston is slidably arranged in the piston cavity; the sieving assembly is arranged in the cavity to filter tumor tissues; wherein an endoscope is arranged on the catheter to observe the internal condition of the bladder; the connector is provided with a connector inserted into a catheter orifice to be communicated with a catheter; the bin body is arranged on the cylinder body and is inserted into the connecting piece together with one end of the cylinder body to form fixation; a first one-way valve communicated with the cavity and a second one-way valve communicated with the piston cavity are arranged in the connecting piece; the opposite parts of the inner wall of the piston cavity and the inner wall of the cavity form a communicating port to communicate the piston cavity with the cavity; the flushing device for the visual bladder tumor electric resection operation has the beneficial effect that the flushing device for the visual bladder tumor electric resection operation has the screening function.

Description

Technical Field

[0001] The present application relates to the field of bladder irrigation, and in particular to an irrigation device for use in visualized bladder tumor electroresection surgery. Background Art

[0002] Clinically, when performing electroresection of bladder tumors, it is necessary to flush the blood clots, chopped tissue blocks, and stone fragments in the bladder. Currently, when performing bladder flushing, there must be continuous flushing liquid to ensure water circulation, and then the piston tube is connected to extract the inside of the bladder by means of a piston; wherein, during the extraction, a portion of the tissue blocks and the flushing liquid will be drawn into the piston tube together; at this time, if the number of tissue blocks in the piston tube is small and the flushing liquid is large, the liquid and tissue blocks in the piston tube will be injected into the bladder again, or part of the flushing liquid will be injected into the bladder to leave the tissue blocks in the piston tube; but no matter how the operation is performed, the tissue blocks that have been extracted will be injected into the bladder again, which increases the risk of infection on the one hand, and increases the workload on the other hand;

[0003] Therefore, it is necessary to design a flushing device for bladder tumor electroresection surgery that can automatically filter the tumor tissue when sucking it out and also ensure water circulation. Summary of the invention

[0004] In order to improve the current problem that the tumor tissue cannot be actively screened by a piston during aspiration after bladder tumor transurethral resection surgery, resulting in part of the tissue returning to the bladder, the present application provides a flushing device for visualized bladder tumor transurethral resection surgery.

[0005] The present application provides a flushing device for visualized bladder tumor electroresection surgery, which is arranged at one end of a catheter to connect the catheter with the bladder; the following technical scheme is adopted: comprising: a cylinder having a piston cavity;

[0006] A chamber body having a chamber;

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

[0008] A piston is slidably disposed in the piston cavity;

[0009] A sieving component is disposed in the chamber to filter the tumor tissue;

[0010] Among them, an endoscope is arranged on the catheter to observe the internal situation of the bladder; the connecting piece has a joint inserted into the catheter tube mouth 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 connected to the chamber and a second one-way valve connected to the piston chamber are arranged in the connecting piece; the inner wall of the piston chamber and the relative parts of the inner wall of the chamber form a connecting port to connect the piston chamber and the chamber; the screening assembly includes a loading frame and a filter element, the loading frame is arranged in the chamber; the filter element is fixedly arranged on the loading piece.

[0011] When sucking out tumor tissue in the bladder, the specific location of the tumor tissue in the bladder can be observed through the endoscope, thereby improving the accuracy of suction; the setting of the screening component can filter the sucked out tumor tissue, so that the internal physiological saline is filtered and circulated; wherein, the setting of the filter element can realize the collection of tumor tissue during filtration, thereby improving the collection effect; the setting of the chamber body can make the tumor tissue exist alone in the chamber, so that it can be easily handled after suction.

[0012] Optionally, the screening component further comprises:

[0013] A moving part is slidably disposed in the chamber;

[0014] A first magnetic attraction member is fixedly disposed on the moving member;

[0015] A second magnetic attraction member is arranged on the piston opposite to the first magnetic attraction member;

[0016] The loading frame is fixedly arranged on the moving part; a third one-way valve is arranged on the loading frame, and the filter element 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] Wherein, the first one-way valve and the third one-way valve only allow the liquid to flow in the first direction;

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

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

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

[0022] Wherein, a piston rod connected with the push-pull rod is arranged on the piston.

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

[0024] A slot is formed on the inner wall of one end of the connecting sleeve close to the bin body, and a first block corresponding to the slot is formed on the side wall of the bin body;

[0025] The clamping groove is located at a portion of the connecting sleeve extending along the first direction at an end portion close to the first clamping block, and the extending portion is extended along the circumferential direction of the connecting sleeve.

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

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

[0028] 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.

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

[0030] A limiting strip is formed on the sealing plate, and a corresponding portion of the bin body and the limiting strip forms an embedded groove;

[0031] The sealing plate is movably arranged on the cylinder, and its surface completely covers the connecting hole formed by the cylinder.

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

[0033] 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;

[0034] Wherein, the connector is arranged opposite to the first one-way valve.

[0035] Optionally, a water injection port communicating with the piston cavity is also provided on the surface of the cylinder.

[0036] Specifically, a flushing method for visualized bladder tumor electroresection surgery is applied to the above-mentioned flushing device for visualized bladder tumor electroresection surgery, and includes the following steps:

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

[0038] S2, pulling the push-pull rod in the first direction to move the piston in the first direction, and the moving part moves synchronously under the action of the magnetic attraction force; at this time, the tumor tissue in the bladder is sucked into the cavity; and the physiological saline enters the piston cavity;

[0039] S3, pushing the push-pull rod in the second direction to move the piston in the second direction, and the moving part moves synchronously under the action of the magnetic force; at this time, the piston can inject the physiological saline in the piston cavity into the catheter; in the cavity, the tumor tissue flows in the direction of the third one-way valve, and the tumor tissue will be screened by the filter element;

[0040] S4. Rotate and pull the connecting sleeve along the first direction to remove the bin body from the cylinder body, and then clean the tumor tissue that has been sucked out.

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

[0042] 1. The detachable chamber can be easily cleaned after the tumor tissue is sucked, which improves convenience;

[0043] 2. By providing the first magnetic attraction member and the second magnetic attraction member, the sieving assembly can be driven to move synchronously when the piston is driven, so that the detachable bin body can be matched, thereby improving the convenience of operation of the flushing device;

[0044] 3. By setting the filter element, after filtering the tumor tissue, the moving element can be deformed as it moves to wrap part of the tumor tissue, and then the adhesion of the tumor tissue itself is accumulated, which is conducive to subsequent cleaning;

[0045] 4. By setting the connecting sleeve, the warehouse body can be easily disassembled through the cooperation of the card slot and the step groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0047] Figure 2 It is a schematic diagram of the overall structure of the flushing device of an embodiment of the present application;

[0048] Figure 3 This is a schematic diagram of the overall half-section structure of the flushing device of an embodiment of the present application;

[0049] Figure 4 yes Figure 3 A partial enlarged view of the

[0050] Figure 5 is a schematic structural diagram of a screening assembly according to an embodiment of the present application;

[0051] Figure 6 is a schematic diagram of the exploded structure of the screening assembly of an embodiment of the present application;

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

[0053] Figure 8 is a schematic diagram of a half-section structure of a connector according to an embodiment of the present application;

[0054] Fig. 9 It is a schematic diagram of the exploded structure of the connecting member and the mounting plate of the embodiment of the present application;

[0055] Fig.10 This is a schematic diagram of the overall explosion structure of the warehouse body and the cylinder body of the embodiment of the present application;

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

[0057] Fig.12 It is a schematic diagram of the overall structure of the connecting sleeve and the stepped groove of the embodiment of the present application.

[0058] Reference numerals:

[0059] 100. Flushing device for visualized bladder tumor electroresection surgery; 101. catheter; 1. barrel; 2. chamber; 3. connector; 4. piston; 5. sieving assembly; 6. piston cavity; 7. cavity opening; 8. chamber; 9. inlet; 10. window; 11. connecting cavity; 12. connector; 13. endoscope; 14. mounting plate; 15. first one-way valve; 16. second one-way valve; 17. inclined plane; 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 part; 25. Second magnetic part; 26. Connecting port; 27. Water injection port; 28. Piston tube; 29. ​​Push-pull rod; 31. Piston rod; 32. Notch; 33. Connecting sleeve; 34. Slot; 35. First clamping block; 36. Step groove; 37. Second clamping block; 38. Sealing plate; 39. Limiting strip; 40. Interlocking groove. DETAILED DESCRIPTION

[0060] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0061] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0062] It should be noted that the concepts such as "first" and "second" mentioned in the present 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 "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated 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] Reference Figures 1 to 12 ; The embodiment of the present application discloses a flushing device 100 for visualized bladder tumor electroresection surgery, which is arranged at one end of a catheter 101 to connect the catheter 101 with the bladder; it includes: a cylinder 1, a chamber 2, a connector 3, a piston 4, and a screening assembly 5; specifically, the cylinder 1 is made of stainless steel metal to form a piston cavity 6; the cross-sectional profile of the piston cavity 6 along the diameter direction of the cylinder 1 is semicircular and one end has a cavity opening 7 that enters the internal space of the piston cavity 6; the chamber 2 is made of stainless steel metal and has a semicircular external profile; it is arranged on the cylinder 1 to form a flushing device with a cylindrical external profile with the cylinder 1; the chamber 2 has a chamber 8 with the same capacity as the piston cavity 6, and the chamber 2 has an inlet 9 to enter the internal space of the chamber 8; more specifically, both the cylinder 1 and the chamber 2 are provided with a visual window 10 to observe the piston cavity 6 and the internal conditions of the chamber 8; the visual window 10 is installed with a transparent glass plate for sealing.

[0067] Specifically, the connecting piece 3 forms a connecting cavity 11; wherein, the connecting piece 3 has a joint 12 that can be inserted into one end of the catheter 101; the joint 12 is connected to the connecting cavity 11; the end of the cylinder 1 located at the cavity opening 7 and the end of the chamber body 2 located at the inlet 9 are inserted into the connecting cavity 11 together to form a fixed connection; more specifically, a sealing ring is arranged 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 arranged on the catheter 101; wherein, the endoscope 13 forms a visual dilator through a guide needle and a sheath, and the outer sheath can adjust the bending length of the soft sheath segment; in this way, visualization can be achieved, so that the doctor can clearly understand the tumor tissue that has been electrocuted in the bladder during the operation; and the convenience of cleaning is improved; understanding the internal conditions of the human body through the endoscope 13 during the operation is a current routine surgical method, and the present application does not make improvements and innovations to this technology, so the present application will no longer describe the specific structure and principle of the endoscope 13 in detail.

[0069] Specifically, a mounting plate 14 is detachably provided on the inner wall of the connecting cavity 11, and the mounting method can be connected by a snap-fit ​​connection for easy disassembly and assembly; the ends of the cylinder 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 are provided on the mounting plate 14, which are respectively connected to the inlet 9 and the cavity opening 7; the first one-way valve 15 corresponding to the inlet 9 and the second one-way valve 16 corresponding to the cavity opening 7 are respectively installed on the two through holes; wherein, the connector 12 and The through holes where the first one-way valve 15 is located are arranged relatively; more specifically, an inclined surface 17 is formed between the second one-way valve 16 and the connector 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 connector 12; it can be understood that when the mixture of the electrocut tumor tissue and the physiological saline enters the connecting cavity 11 through the connector 12, due to the effect of the inclined surface 17, the liquid will more easily pass through the first one-way valve 15 and enter the inlet 9; when the liquid comes out of the cavity opening 7, it will more easily enter the connector 12 due to the guiding effect of the inclined surface 17.

[0070] In another more specific embodiment, the chamber 8 has a screening component 5 for screening tumor tissue; wherein the screening component 5 includes a loading frame 18 and a filter 19; the loading frame 18 is slidably disposed in the cavity along the first direction L of the barrel 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 provided on the closing plate 20, and a third one-way valve 21 is provided in the through hole; in this arrangement, 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 that the tumor tissue in the bladder can be sucked into the chamber 8; the filter 19 is a gauze with filter holes; more specifically, the gauze can be deformed under the reciprocating movement of the loading frame 18 and with the fluctuation of the liquid, so that when filtering the tumor tissue, the gauze can wrap the tumor tissue for later collection;

[0071] In a more specific embodiment, a piston 4 is slidably arranged in the piston cavity 6, and when the piston 4 moves along the second direction N of the cylinder 1, a thrust is generated on the internal space of the piston cavity 6 between the piston 4 and the connection, and physiological saline is injected into the connecting cavity 11 through the second one-way valve 16; wherein a through hole is arranged 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 screening 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, and is used to be mounted on the loading frame 18; the first magnetic member 24 is fixedly disposed on the side of the moving member 23 close to the piston chamber 6; the second magnetic member 25 is fixedly disposed on the side of the piston 4 close to the chamber 8; wherein the first magnetic member 24 and the second magnetic member 25 are both permanent magnets, and can generate a magnetic attraction force that attracts each other;

[0073] Specifically, the inner wall of the piston chamber 6 and the inner wall of the chamber 8 form a communication port 26 to connect the piston chamber 6 and the chamber 8; the first one-way valve 15 and the third one-way valve 21 only allow the liquid to flow along the first direction L; the second one-way valve 16 and the fourth one-way valve 22 only allow the liquid to flow along the second direction N; wherein, reference Figure 3 , the first direction L and the second direction N are both the directions of the straight line where the first straight line is located;

[0074] In summary, after the connector 12 is inserted into the catheter 101 to form a connection, the piston 4 is first driven to move along the first direction L, and under the action of the magnetic attraction, the moving part 23 moves along the second direction N; at this time, the first one-way valve 15 is opened, and the third one-way valve 21 is closed; the second one-way valve 16 is closed, and the fourth one-way valve 22 is opened; 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 part 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, and under the action of the magnetic attraction, the moving part 23 moves along the second direction N together; at this time, the first one-way valve 15 is closed, the third one-way valve 21 is opened; the second one-way valve 16 is opened, and the fourth one-way valve 22 is closed; in this way, in the chamber 8, the tumor tissue and the liquid enter the third one-way valve 21 to the right side of the flow part, and the tumor tissue is screened by the filter 19 when flowing; in the piston cavity 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, the piston cavity 6 space on the right side of the piston 4 generates negative pressure, which can suck the physiological saline on the right side of the moving part 23 in the chamber 8 into the piston cavity 6 through the connecting port 26; thus, a cycle is formed, and the physiological saline is used here; specifically, a filter net is fixedly arranged at the notch of the connecting port 26 to filter the physiological saline again when it circulates, and further prevent the tumor tissue from being pushed into the bladder.

[0076] More specifically, a water injection port 27 connected to the piston chamber 6 is also provided on the surface of the cylinder 1; the water injection port 27 is connected to an external pipeline, and can continuously inject physiological saline into the piston chamber 6; in this way, the capacity of the physiological saline can be guaranteed during operation; and the loss of physiological saline during use can be avoided.

[0077] In a more specific embodiment, one end of the cylinder 1 away from the connecting piece 3 is fixedly connected / integrated with a piston 4 tube; a push-pull rod 29 is movably arranged in the piston 4 tube, and one end of the push-pull rod 29 is located in the piston 4 tube to form a pulling block; a piston 4 rod is integrally formed at one end of the piston 4 close to the pulling rod, and the piston 4 rod 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 along the first direction L on the side of the piston 4 tube close to the warehouse body 2 and corresponding to the warehouse body 2; a connecting sleeve 33 for fixing the warehouse body 2 is provided at the part located at the notch 32; specifically, a card groove 34 is formed on the inner wall of one end of the connecting sleeve 33 close to the warehouse body 2; a portion extending along the first direction L is located on the side of the connecting sleeve 33 close to the warehouse body 2, and the extending portion further extends along the circumferential direction of the connecting sleeve 33; it can be understood that the card groove 34 is L-shaped on the inner wall of the connecting sleeve 33; a first card block 35 corresponding to the card groove 34 is formed on the surface of the side of the warehouse body 2 away from the connecting member 3, and the first card block 35 is inserted into the card groove 34 along the first direction L and then rotated to the connecting sleeve 33, so that the warehouse body 2 can be limited in the first direction L / second direction N;

[0079] Specifically, a stepped groove 36 is formed at one end of the connecting sleeve 33 opposite to the card slot 34. The stepped groove 36 is located at the end of the connecting sleeve 33 away from the card slot 34 and is partially concave along the second direction N. Part of the side wall of the concave part extends along the circumferential direction of the connecting sleeve 33; and part of the bottom wall extending along the circumferential direction is further concave along the second direction N. It can be understood that the inner wall of the connecting sleeve 33 is stepped; the extension direction of the stepped groove 36 in the circumferential direction of the connecting sleeve 33 is opposite to the extension direction of the card slot 34 in the circumferential direction of the connecting sleeve 33; wherein, a second clamping block 37 is formed on the surface of the piston 4 tube and opposite to the first clamping block 35;

[0080] By adopting the above scheme, when in use, the warehouse body 2 is placed on the cylinder body 1 and then the first clamping block 35 is clamped into the clamping groove 34, and the second clamping block 37 is clamped 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 / second direction N; then the connecting sleeve 33 is pushed along the second direction N, at this time, the connecting sleeve 33 can also drive the warehouse body 2 to move along the second direction N; so that the end of the warehouse body 2 with the inlet 9 is embedded in 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, and finally the connecting sleeve 33 is pushed again, on the one hand, the warehouse body 2 can be further embedded in the connecting member 3, and on the other hand, the second clamping block 37 is limited in the circumferential direction; in this way, the arrangement can facilitate the disassembly and assembly of the warehouse body 2 and improve convenience.

[0081] On this basis, a sealing plate 38 is movably arranged on the cylinder 1 and located on one side of the connecting port 26; specifically, a limiting strip 39 is formed on the sealing plate 38, and the corresponding parts of the chamber body 2 and the limiting strip 39 form an interlocking groove 40; the limiting strip 39 can be embedded in the interlocking groove 40 so that when the chamber body 2 moves along the first direction L / the second direction N, the sealing plate 38 is also driven to move to achieve sealing of the connecting port 26; with such a configuration, the tumor tissue needs to be cleaned after absorbing the tumor tissue for a period of time, so that the physiological saline in the piston chamber 6 can be prevented from leaking out of the connecting port 26 after the chamber body 2 is removed.

[0082] Embodiment 2

[0083] A flushing method for visualized bladder tumor electroresection surgery is applied to a flushing device for visualized bladder tumor electroresection surgery described in the first embodiment, comprising the following steps:

[0084] S1, the chamber body 2 is fixed to the cylinder body 1 through the connecting sleeve 33 to form the flushing device 100, and then the connector 12 is inserted into the catheter 101 to form a connection; the endoscope 13 is passed through the position of the tumor tissue in the bladder to start absorbing the tumor tissue; the external pipeline is connected to the water injection port 27 to allow the physiological saline to enter the piston cavity 6; and then the tumor tissue is absorbed;

[0085] S2, pull the push-pull rod 29 along the first direction L to move the piston 4 along the first direction L, and the moving member 23 moves synchronously under the action of the magnetic attraction force; at this time, the first one-way valve 15 opens, and the tumor tissue in the bladder is sucked into the chamber 8; and the physiological saline enters the piston chamber 6; the fourth one-way valve 22 opens, so that the physiological saline flows to the left side of the piston 4;

[0086] S3, push the push-pull rod 29 along the second direction N to make the piston 4 move along the second direction N, and the moving member 23 moves synchronously under the action of the magnetic force; at this time, the second one-way valve 16 is opened, and the piston 4 can inject the saline in the piston cavity 6 into the catheter 101; in the chamber 8, the third one-way valve 21 is opened, and the mixture of tumor tissue and saline flows in the direction of the third one-way valve 21, and the tumor tissue is sieved by the filter element 19; the saline enters the chamber 8 located on the right side of the third one-way valve 21 through the electric three-way valve 21, and enters the piston cavity 6 along the connecting port 26;

[0087] S4, rotating and pulling the connecting sleeve along the first direction L, disassembling the bin body 2 from the cylinder body 1, and then cleaning the tumor tissue that has been sucked out.

[0088] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A flushing device for visualized bladder tumor electroresection surgery, arranged at one end of a catheter to connect the catheter with the bladder; characterized in that: include: a cylinder having a piston chamber; A chamber body having a chamber; A connecting piece, fixedly arranged at one end of the conduit; A piston, slidably disposed in the piston cavity; A sieving component is disposed in the chamber to filter tumor tissue; Among them, an endoscope is arranged on the catheter to observe the internal situation of the bladder; the connecting piece has a joint inserted into the catheter tube mouth 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 fixed connection; a first one-way valve connected to the chamber and a second one-way valve connected to the piston chamber are arranged in the connecting piece; the inner wall of the piston chamber and the inner wall of the chamber form a connecting port to connect the piston chamber and the chamber; the screening assembly includes a loading frame and a filter, the loading frame is arranged in the chamber; the filter is fixedly arranged on the loading piece to screen the tumor tissue after electroresection.

2. The flushing device for visualized bladder tumor transurethral resection according to claim 1, characterized in that: The screening assembly further comprises: A moving part, slidably disposed in the chamber; A first magnetic attraction member is fixedly disposed on the moving member; a second magnetic attraction member, arranged on the piston opposite to the first magnetic attraction member; Wherein, the loading frame is fixedly arranged on the moving member; a third one-way valve is arranged on the loading frame, and the filter element is located between the first one-way valve and the third one-way valve.

3. The flushing device for visualized bladder tumor transurethral resection according to claim 2, characterized in that: A fourth one-way valve is arranged on the piston; Wherein, the first one-way valve and the third one-way valve only allow the liquid to flow in a first direction; The second one-way valve and the fourth one-way valve only allow the liquid to flow in the second direction.

4. The flushing device for visualized bladder tumor transurethral resection according to claim 1, characterized in that: The end of the cylinder away from the connecting piece has a piston tube; A push-pull rod is movably arranged in the piston tube; Wherein, a piston rod connected with the push-pull rod is arranged on the piston.

5. The flushing device for visualized bladder tumor transurethral resection according to claim 4, characterized in that: The piston tube is provided with a connecting sleeve for connecting the warehouse body and the piston tube; A slot is formed on the inner wall of one end of the connecting sleeve close to the bin body, and a first block corresponding to the slot is formed on the side wall of the bin body; The clamping groove is located at a portion of the connecting sleeve extending along a first direction at an end portion close to the first clamping block, and the extending portion is a portion extending along a circumferential direction of the connecting sleeve.

6. The flushing device for visualized bladder tumor transurethral resection according to claim 5, characterized in that: A second clamping block is formed on the surface of the piston tube and opposite to the first clamping block; The portion of the connecting sleeve away from the end of the slot is concave in the second direction, and the side wall portion of the concave portion extends along the circumferential direction of the connecting sleeve; and the bottom wall of the circumferential extension portion is further concave in the second direction to form a stepped groove; 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.

7. The flushing device for visualized bladder tumor transurethral resection according to claim 6, characterized in that: A sealing plate is movably arranged on the cylinder and located on one side of the communicating hole; A limiting strip is formed on the sealing plate, and a groove is formed between the portion of the bin body corresponding to the limiting strip; Wherein, the sealing plate is movably arranged on the cylinder, and its surface completely covers the connecting hole formed by the cylinder.

8. The flushing device for visualized bladder tumor transurethral resection according to claim 1, characterized in that: The connecting piece 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 connector is arranged opposite to the first one-way valve.

9. The flushing device for visualized bladder tumor transurethral resection according to claim 1, characterized in that: The surface of the cylinder is also provided with a water injection port which is in communication with the piston cavity.

10. A flushing method for visual bladder tumor transurethral resection surgery, characterized in that: A flushing device for visualized bladder tumor electroresection surgery according to any one of claims 1 to 9 comprises the following steps: S1. Fix the chamber body on the cylinder body through the connecting sleeve, and then insert the connector into the catheter to form a connection; penetrate the position of the tumor tissue in the bladder through the endoscope and start to absorb the tumor tissue; S2, pulling the push-pull rod in the first direction to move the piston in the first direction, and the moving part moves synchronously under the action of the magnetic attraction force; at this time, the tumor tissue in the bladder is sucked into the cavity; and the physiological saline enters the piston cavity; S3, pushing the push-pull rod in the second direction to move the piston in the second direction, and the moving part moves synchronously under the action of the magnetic force; at this time, the piston can inject the physiological saline in the piston cavity into the catheter; in the cavity, the tumor tissue flows in the direction of the third one-way valve, and the tumor tissue will be screened by the filter element; S4. Rotate and pull the connecting sleeve along the first direction to remove the bin body from the cylinder body, and then clean the tumor tissue that has been sucked out.

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