Minimally invasive surgical instrument

Abstract

The embodiment of the application discloses a minimally invasive surgical instrument, which comprises a handle assembly, a cutter head assembly, a first connecting rod, a second connecting rod and a connecting shaft, the handle assembly comprises a first holding assembly and a second holding assembly, the cutter head assembly comprises a first cutting rod and a second cutting rod, one end of the first connecting rod is connected with the first holding assembly, the other end of the first connecting rod is connected with the first cutting rod, one end of the second connecting rod is connected with the second holding assembly, the other end of the second connecting rod is connected with the second cutting rod, the first connecting rod and the second connecting rod are connected through the connecting shaft, and the first cutting rod and the second cutting rod cooperate to complete cutting of a bladder tumor. The embodiment of the application solves the technical problem of how to reduce the probability of diffusion of bladder tumor tissue and avoid injuring a patient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices. More particularly, the present application relates to a minimally invasive surgical device. BACKGROUND

[0002] The minimally invasive surgical device mentioned herein is a surgical device for cutting bladder tumors and performing minimally invasive surgical treatment. The minimally invasive surgical device in the prior art adopts a combination of a spring assembly and a cable to control the switching of the blade head assembly between the closed state and the open state, so as to realize the cutting function of the bladder tumor.

[0003] Specifically, referring to the Chinese Utility Model Patent Document with the publication number CN213047255U, the patent document discloses a multifunctional urological surgical device, which comprises a blade head assembly, an outer tube assembly, and a handle assembly. The blade head assembly comprises a second blade head and a first blade head in the shape of a conical needle. The first blade head is fixedly connected to the outer tube assembly. The second blade head is movably connected to the outer tube assembly. The outer tube assembly comprises a cable. The handle assembly comprises a spring assembly and a pull rod. One end of the cable is connected to the second blade head, and the other end of the cable is wound around the spring assembly. One end of the pull rod is connected to the spring assembly, and the other end of the pull rod extends to the handle of the handle assembly. When it is necessary to cut the bladder tumor, the medical staff gradually tightens the handle of the handle assembly, the pull rod pulls the spring assembly, the spring assembly retracts to pull the cable towards the handle assembly, the cable pulls the second blade head, and the second blade head gradually approaches the first blade head to achieve the cutting effect. In the actual operation process, some unexpected situations will inevitably occur, and the medical staff needs to immediately loosen the handle assembly to handle the situation after cutting the bladder tumor. In this case, the second blade head moves away from the first blade head under the action of the elastic force of the spring assembly. Since the spring assembly has strong elasticity, the second blade head will vibrate due to inertia during the movement of the second blade head under the action of the elastic force, and the entire surgical device will also vibrate. The second blade head or the first blade head in the vibration state will cut the tumor tissue or injure the bladder wall of the patient. The cut tumor tissue will increase the spread of tumor cells, thereby increasing the risk of postoperative recurrence. The injury to the patient will further harm the patient's body, thereby affecting the patient's health. SUMMARY

[0004] The embodiments of the present application provide a minimally invasive surgical device, which solves the technical problem of how to reduce the probability of the spread of bladder tumor tissue while avoiding injury to the patient. The embodiments of the present application mainly achieve the above-mentioned technical problem through the following technical solutions.

[0005] The embodiments of the present application provide a minimally invasive surgical device, which comprises:

[0006] The handle assembly, the tool head assembly, the first connecting rod, the second connecting rod and the connecting shaft, the handle assembly comprises a first holding assembly and a second holding assembly, the tool head assembly comprises a first cutting rod and a second cutting rod;

[0007] One end of the first connecting rod is connected with the first holding assembly, and the other end is connected with the first cutting rod; one end of the second connecting rod is connected with the second holding assembly, and the other end is connected with the second cutting rod; the first connecting rod and the second connecting rod are connected through the connecting shaft;

[0008] When the first holding assembly and the second holding assembly are close to each other, the first holding assembly drives the first cutting rod to move towards the second cutting rod through the first connecting rod, the second holding assembly drives the second cutting rod to move towards the first cutting rod through the second connecting rod, and the first cutting rod and the second cutting rod generate pressure, thereby cutting the bladder tumor.

[0009] The first holding assembly and the second holding assembly are close to each other, the first holding assembly can drive the first cutting rod to move towards the second cutting rod through the first connecting rod, and the second holding assembly can drive the second cutting rod to move towards the first cutting rod through the second connecting rod. Therefore, the first cutting rod and the second cutting rod can use pressure to realize a cutting action similar to scissors to cut the bladder tumor.

[0010] The minimally invasive surgical instrument further comprises a plurality of first mounting members, the first holding assembly and the first cutting rod are connected with the first connecting rod through corresponding first mounting members, and the second holding assembly and the second cutting rod are connected with the second connecting rod through corresponding first mounting members.

[0011] The first holding assembly, the first connecting rod and the first cutting rod, and the second holding assembly, the second connecting rod and the second cutting rod can improve the stability of the transmission connection.

[0012] The minimally invasive surgical instrument further comprises a first sleeve with a camera member, one side of the first sleeve is connected with the first connecting rod, and the other side is connected with the second connecting rod.

[0013] The addition of the camera member in the minimally invasive surgical instrument 1 can make the operation of the minimally invasive surgical instrument 1 simpler and more intuitive for medical personnel to observe the patient's wound.

[0014] The outer side wall of the first sleeve is provided with a plurality of first installation grooves, and each first installation member is accommodated in a corresponding first installation groove. In this way, the first installation member and the first sleeve can be fixedly connected, and the first installation member can be prevented from being separated from the first sleeve.

[0015] The connecting shaft comprises a plurality of second installation members, the first connecting rod is connected to the first sleeve through a corresponding second installation member, and the second connecting rod is connected to the first sleeve through a corresponding second installation member. In this way, the first connecting rod and the second connecting rod can be independently connected to the first sleeve, so that the movement of the first connecting rod and the second connecting rod does not interfere with each other, and the independence of the movement of the first connecting rod and the second connecting rod is improved.

[0016] The first sleeve is also provided with a plurality of second installation grooves, and each second installation member is accommodated in a corresponding second installation groove. In this way, the second installation member and the first sleeve can be fixedly connected, and the second installation member can be prevented from being separated from the first sleeve.

[0017] The first gripping assembly comprises a first handle rod and a first clamping rod, one end of the first clamping rod is connected to the first handle rod, and the other end is connected to the first connecting rod. In this way, the length of the first gripping assembly can be extended, and the convenience of the medical staff in operating the first gripping assembly is improved.

[0018] The second gripping assembly comprises a second handle rod and a second clamping rod, one end of the second clamping rod is connected to the second handle rod, and the other end is connected to the second connecting rod. In this way, the length of the second gripping assembly can be extended, and the convenience of the medical staff in operating the second gripping assembly is improved.

[0019] One end of the first connecting rod is provided with a first sliding groove, and the other end is provided with a second sliding groove; one end of the second connecting rod is provided with a third sliding groove, and the other end is provided with a fourth sliding groove;

[0020] The first clamping rod is provided with a first connecting column, and the first connecting column is in sliding connection with the first sliding groove;

[0021] The first cutting rod is provided with a second connecting column, and the second connecting column is in sliding connection with the second sliding groove;

[0022] The second clamping rod is provided with a third connecting column, and the third connecting column is in sliding connection with the third sliding groove;

[0023] The second cutting rod is provided with a fourth connecting column, and the fourth connecting column is in sliding connection with the fourth sliding groove.

[0024] The embodiment of the present application can improve the precision of transmission between the first holding assembly, the first connecting rod and the first cutting rod, and between the second holding assembly, the second connecting rod and the second cutting rod, so that the rotation angles of the handle assembly and the tool head assembly can be changed proportionally.

[0025] The minimally invasive surgical instrument further comprises a second sleeve, and the second sleeve is internally provided with a containing space for containing the first sleeve, the first connecting rod and the second connecting rod. Thus, the minimally invasive surgical instrument 1 can be prevented from scratching the urethra when moving in the urethra, and the aesthetic appearance of the minimally invasive surgical instrument 1 is improved.

[0026] The second sleeve is further provided with a plurality of third mounting grooves, and one end of each second mounting member is contained in a corresponding second mounting groove and the other end is contained in a corresponding third mounting groove.

[0027] The embodiment of the present application can further fix the position of the second mounting member, so that the first connecting rod and the second connecting rod can rotate at the fixed position, thereby ensuring the consistency of the rotation angles of the handle assembly and the tool head assembly.

[0028] The beneficial effects of the embodiment of the present application include:

[0029] The minimally invasive surgical instrument provided by the embodiment of the present application adopts the transmission mode between the handle assembly, the tool head assembly, the first connecting rod and the second connecting rod to cut the bladder tumor. Compared with the mode of combining the spring assembly and the cable in the prior art, the embodiment of the present application can completely avoid the phenomenon of shaking of the minimally invasive surgical instrument caused by the elastic force, avoid cutting the tumor tissue or injuring the bladder wall of the patient, thereby effectively reducing the probability of diffusion of the bladder tumor tissue and avoiding injury to the patient.

[0030] Other advantages, objects and features of the embodiment of the present application will be embodied partly by the following description, and will be understood by those skilled in the art partly through research and practice of the embodiment of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0032] Figure 1 The structure schematic diagram of the minimally invasive surgical instrument in some embodiments of the present application;

[0033] Figure 2 The structure schematic diagram of the minimally invasive surgical instrument in some embodiments of the present application; Figure 1Enlarged view of middle A part;

[0034] Figure 3 For Figure 1 Enlarged view of middle B part;

[0035] Figure 4 For the structure schematic diagram of the minimally invasive surgical instrument of the embodiment of the present application in other embodiments;

[0036] Figure 5 For the exploded schematic diagram of the first connecting rod, the first sleeve, the second connecting rod and the second mounting member in some embodiments of the embodiment of the present application;

[0037] Figure 6 For the cross-sectional schematic diagram of the second sleeve in some embodiments of the embodiment of the present application;

[0038] Figure 7 For Figure 6 Enlarged view of middle C part;

[0039] Explanation of reference signs:

[0040] 1. Minimally invasive surgical instrument;

[0041] 10. First holding assembly; 11. First handle rod; 12. First clamping rod; 121. First connecting column;

[0042] 20. Second holding assembly; 21. Second handle rod; 22. Second clamping rod; 221. Third connecting column;

[0043] 30. First connecting rod; 31. First sliding groove; 32. Second sliding groove; 33. Fourth mounting slot;

[0044] 40. Second connecting rod; 41. Third sliding groove; 42. Fourth sliding groove; 43. Fifth mounting slot;

[0045] 50. First cutting rod; 51. Second connecting column;

[0046] 60. Second cutting rod; 61. Fourth connecting column;

[0047] 70. Connecting shaft; 71. Second mounting member;

[0048] 80. First mounting member;

[0049] 90. First sleeve; 91. First mounting slot; 92. Second mounting slot;

[0050] 100. Second sleeve; 101. Accommodation space; 102. Third mounting slot. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0052] The terms “first” and “second” and the like in the specification of the embodiments of the present application are used to distinguish different objects, and are not used to describe a specific order of the objects. For example, the first holding assembly and the second holding assembly are used to distinguish different holding assemblies, and are not used to describe a specific order of the holding assemblies.

[0053] In the embodiments of the present application, the words “exemplary” or “for example” are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as “exemplary” or “for example” in the embodiments of the present application should not be construed as being more preferred or advantageous than other embodiments or design solutions. In fact, the use of the words “exemplary” or “for example” is intended to present related concepts in a specific manner.

[0054] It should be noted that, in this document, the terms “comprise”, “contain” or any other variant thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0055] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0056] Referring to Figures 1-7 As shown in the drawings, the embodiments of the present application provide a minimally invasive surgical instrument 1, comprising:

[0057] The handle assembly comprises a first holding assembly 10 and a second holding assembly 20, the blade head assembly comprises a first cutting rod 50 and a second cutting rod 60, the first connecting rod 30 and the second connecting rod 40 are connected through the connecting shaft 70.

[0058] Wherein, one end of the first connecting rod 30 is connected with the first holding assembly 10, and the other end is connected with the first cutting rod 50; one end of the second connecting rod 40 is connected with the second holding assembly 20, and the other end is connected with the second cutting rod 60; the first connecting rod 30 and the second connecting rod 40 are connected through the connecting shaft 70.

[0059] When the first holding assembly 10 and the second holding assembly 20 are close to each other, the first holding assembly 10 drives the first cutting rod 50 to move towards the second cutting rod 60 through the first connecting rod 30, the second holding assembly 20 drives the second cutting rod 60 to move towards the first cutting rod 50 through the second connecting rod 40, and pressure is generated between the first cutting rod 50 and the second cutting rod 60 to cut off the bladder tumor.

[0060] It should be noted that the connection between the first holding assembly 10 and the first connecting rod 30 is a rotating connection, the connection between the first cutting rod 50 and the first connecting rod 30 is a rotating connection, the connection between the second holding assembly 20 and the second connecting rod 40 is a rotating connection, and the connection between the second cutting rod 60 and the second connecting rod 40 is a rotating connection.

[0061] The first cutting rod 50 comprises a first cutting section, a second cutting section, a third cutting section and a fourth cutting section. The first cutting section, the second cutting section, the third cutting section and the fourth cutting section are connected with each other. Each cutting section is connected with the first connecting rod 30.

[0062] The second cutting rod 60 comprises a fifth cutting section, a sixth cutting section, a seventh cutting section and an eighth cutting section. The fifth cutting section, the sixth cutting section, the seventh cutting section and the eighth cutting section are connected with each other. Each cutting section is connected with the second connecting rod 40.

[0063] The first cutting rod 50 and the second cutting rod 60 are provided with multiple cutting sections, so as to expand the moving range of the first cutting rod 50 and the second cutting rod 60, facilitate the operation of medical staff, and cut off bladder tumors of different shapes or sizes.

[0064] In the embodiment, the working principle of the minimally invasive surgical instrument 1 is similar to that of a scissors.

[0065] The first holding assembly 10 and the second holding assembly 20 are connected to the first connecting rod 30 and the second connecting rod 40 respectively, and the first connecting rod 30 and the second connecting rod 40 are connected through the connecting shaft 70. When the first holding assembly 10 and the second holding assembly 20 are close to each other, the first holding assembly 10 can drive the first cutting rod 50 to move towards the second cutting rod 60 through the first connecting rod 30, and the second holding assembly 20 can drive the second cutting rod 60 to move towards the first cutting rod 50 through the second connecting rod 40. Thus, the first cutting rod 50 and the second cutting rod 60 can realize a cutting action similar to scissors by using pressure to cut the bladder tumor. The minimally invasive surgical instrument 1 provided by the embodiment of the application cuts the bladder tumor by using the transmission mode between the handle assembly, the knife head assembly, the first connecting rod 30 and the second connecting rod 40. Compared with the mode of combining the spring assembly and the cable in the prior art, the embodiment of the application can completely avoid the phenomenon that the minimally invasive surgical instrument shakes due to the elastic force, avoid cutting the tumor tissue or injuring the bladder wall of the patient, thereby effectively reducing the probability of the diffusion of the bladder tumor tissue and avoiding the injury of the patient.

[0066] The minimally invasive surgical instrument 1 further comprises a plurality of first mounting members 80, the first holding assembly 10 and the first cutting rod 50 are connected to the first connecting rod 30 through corresponding first mounting members 80, and the second holding assembly 20 and the second cutting rod 60 are connected to the second connecting rod 40 through corresponding first mounting members 80.

[0067] The first mounting member 80 is a positioning pin. In other embodiments, the first mounting member 80 can also be other components that can be used for positioning, and the application does not make further limitations on this.

[0068] The number of the first mounting members 80 is four, and the four first mounting members 80 are connected to the first holding assembly 10, the first cutting rod 50, the second holding assembly 20 and the second cutting rod 60 respectively. In other embodiments, the number of the first mounting members 80 can be set by a person skilled in the art according to actual needs.

[0069] The embodiment of the application can improve the stability of the transmission connection of the first holding assembly 10, the first connecting rod 30 and the first cutting rod 50, and the second holding assembly 20, the second connecting rod 40 and the second cutting rod 60.

[0070] As Figure 1 and Figure 2As shown, the minimally invasive surgical instrument 1 further comprises a first sleeve 90 with a camera component, one side of the first sleeve 90 is connected with the first connecting rod 30, and the other side is connected with the second connecting rod 40.

[0071] It should be noted that the camera component is a CCD (Charge Coupled Device) camera.

[0072] The first sleeve 90 is a hollow tube. The camera component is arranged at one end of the first sleeve 90.

[0073] The addition of the camera component in the minimally invasive surgical instrument 1 can make the operation of the minimally invasive surgical instrument 1 simpler and facilitate the medical staff to observe the patient's wound more intuitively.

[0074] As shown in Figure 1 and Figure 2 As shown, the outer side wall of the first sleeve 90 is provided with a plurality of first mounting grooves 91, and each first mounting component 80 is accommodated in the corresponding first mounting groove 91.

[0075] The number of first mounting grooves 91 is the same as the number of first mounting components 80. The first mounting grooves 91 can be blind holes or through holes.

[0076] The embodiment of the present application can make the first mounting component 80 and the first sleeve 90 fixedly connected, avoiding the first mounting component 80 from being separated from the first sleeve 90.

[0077] The connecting shaft 70 comprises a plurality of second mounting components 71, the first connecting rod 30 is connected with the first sleeve 90 through the corresponding second mounting component 71, and the second connecting rod 40 is connected with the first sleeve 90 through the corresponding second mounting component 71.

[0078] The second mounting component 71 is a positioning pin. In other embodiments, the second mounting component 71 can also be other components that can be used for positioning, and the present application does not make further limitations thereon. The number of second mounting components 71 is two, one of which is used for connecting the first connecting rod 30 and the first sleeve 90, and the other is used for connecting the second connecting rod 40 and the first sleeve 90.

[0079] The embodiment of the present application can realize that the first connecting rod 30 and the second connecting rod 40 can be independently connected with the first sleeve 90 respectively, so that the movement of the first connecting rod 30 and the second connecting rod 40 does not interfere with each other, and the independence of the first connecting rod 30 and the second connecting rod 40 is improved.

[0080] The plurality of second mounting members 71 can be integrally formed to form a connecting shaft 70. That is, after the connecting shaft 70 passes through the first sleeve 90, two ends thereof are connected with the first connecting rod 30 and the second connecting rod 40 respectively.

[0081] The first sleeve 90 is further provided with a plurality of second mounting grooves 92, and each second mounting member 71 is accommodated in a corresponding second mounting groove 92.

[0082] The number of the second mounting grooves 92 is two. The second mounting grooves 92 can be blind holes or through holes. When the second mounting grooves 92 are blind holes, the plurality of second mounting members 71 cannot be integrally formed.

[0083] Each second mounting member 71 is partially accommodated in a corresponding second mounting groove 92.

[0084] The embodiment of the present application can enable the second mounting member 71 and the first sleeve 90 to be fixedly connected, thereby avoiding the second mounting member 71 from being separated from the first sleeve 90.

[0085] As shown in Figure 1 The first holding assembly 10 includes a first handle rod 11 and a first clamping rod 12. One end of the first clamping rod 12 is connected with the first handle rod 11, and the other end thereof is connected with the first connecting rod 30.

[0086] The first handle rod 11 is provided with a first limiting hole, and the first clamping rod 12 is connected with the first handle rod 11 through the first limiting hole. The first clamping rod 12 and the first limiting hole can be interference fitted, screw fitted or adhesively assembled.

[0087] The first clamping rod 12 includes a first bent section, a second bent section, a third bent section and a fourth bent section. The first bent section, the second bent section, the third bent section and the fourth bent section are connected with each other. The first bent section is connected with the first connecting rod 30, and the fourth bent section is connected with the first handle rod 11.

[0088] The embodiment of the present application can prolong the length of the first holding assembly 10, thereby improving the convenience of medical staff in operating the first holding assembly 10.

[0089] The second holding assembly 20 includes a second handle rod 21 and a second clamping rod 22. One end of the second clamping rod 22 is connected with the second handle rod 21, and the other end thereof is connected with the second connecting rod 40.

[0090] The second handle rod 21 is provided with a second limiting hole, and the second clamping rod 22 is connected with the second handle rod 21 through the second limiting hole. The second clamping rod 22 and the second limiting hole can be interference assembly, threaded assembly or pasting assembly.

[0091] The second clamping rod 22 comprises a fifth bending section, a sixth bending section, a seventh bending section and an eighth bending section. The fifth bending section, the sixth bending section, the seventh bending section and the eighth bending section are connected with each other. The fifth bending section is connected with the second connecting rod 40, and the eighth bending section is connected with the second handle rod 21.

[0092] The first clamping rod 12 and the second clamping rod 22 are provided with a plurality of bending sections, so as to expand the moving range of the first handle rod 11 and the second handle rod 21, and facilitate the operation of medical staff.

[0093] One end of the first connecting rod 30 is provided with a first sliding groove 31, and the other end is provided with a second sliding groove 32. One end of the second connecting rod 40 is provided with a third sliding groove 41, and the other end is provided with a fourth sliding groove 42.

[0094] The first clamping rod 12 is provided with a first connecting column 121, and the first connecting column 121 is slidably connected with the first sliding groove 31.

[0095] The first cutting rod 50 is provided with a second connecting column 51, and the second connecting column 51 is slidably connected with the second sliding groove 32.

[0096] The second clamping rod 22 is provided with a third connecting column 221, and the third connecting column 221 is slidably connected with the third sliding groove 41.

[0097] The second cutting rod 60 is provided with a fourth connecting column 61, and the fourth connecting column 61 is slidably connected with the fourth sliding groove 42.

[0098] The first sliding groove 31 and the second sliding groove 32 are respectively arranged at two ends of the first connecting rod 30.

[0099] The third sliding groove 41 and the fourth sliding groove 42 are respectively arranged at two ends of the second connecting rod 40.

[0100] The first sliding groove 31, the second sliding groove 32, the third sliding groove 41 and the fourth sliding groove 42 can be arranged as U-shaped grooves.

[0101] The embodiment of the present application can improve the accuracy of transmission between the first holding assembly 10, the first connecting rod 30 and the first cutting rod 50, and between the second holding assembly 20, the second connecting rod 40 and the second cutting rod 60, so that the rotation angles of the handle assembly and the tool head assembly can be changed in proportion

[0102] As shown in Figure 4 and Figure 6 The minimally invasive surgical instrument 1 further comprises a second sleeve 100, and the second sleeve 100 is internally provided with a containing space 101 for containing the first sleeve 90, the first connecting rod 30 and the second connecting rod 40.

[0103] The second sleeve 100 is a hollow pipe. The outer peripheral wall of the second sleeve 100 is a smooth outer peripheral wall.

[0104] The first sleeve 90 is fixed in the second sleeve 100 along the center line of the second sleeve 100, so that the imaging member in the first sleeve 90 is not interfered with other mechanisms, and a complete imaging visual system can be provided for the entire minimally invasive surgical instrument 1.

[0105] The first connecting rod 30, the second connecting rod 40, the first mounting member 80 and the second mounting member 71 are also contained in the containing space 101.

[0106] The embodiment of the present application can avoid scratching the urethra when the minimally invasive surgical instrument 1 moves in the urethra, and improve the aesthetic appearance of the minimally invasive surgical instrument 1.

[0107] As shown in Figure 6 and Figure 7 The second sleeve 100 is further provided with a plurality of third mounting grooves 102, and one end of each second mounting member 71 is contained in a corresponding second mounting groove 92, and the other end is contained in a corresponding third mounting groove 102.

[0108] The number of third mounting grooves 102 is the same as the number of second mounting grooves 92. The third mounting grooves 102 are blind holes to improve the aesthetic appearance of the outer side wall of the second sleeve 100.

[0109] The embodiment of the present application can further fix the position of the second mounting member 71, so that the first connecting rod 30 and the second connecting rod 40 can rotate at a fixed position, thereby ensuring the consistency of the rotation angles of the handle assembly and the tool head assembly.

[0110] The first connecting rod 30 is further provided with a fourth mounting slot 33, and the second connecting rod 40 is further provided with a fifth mounting slot 43. One end of the second mounting member 71 corresponding to the first connecting rod 30 is accommodated in the corresponding second mounting slot 92, and the other end passes through the fourth mounting slot 33 and is accommodated in the corresponding third mounting slot 102. One end of the second mounting member 71 corresponding to the second connecting rod 40 is accommodated in the corresponding second mounting slot 92, and the other end passes through the fifth mounting slot 43 and is accommodated in the corresponding third mounting slot 102.

[0111] The fourth mounting slot 33 and the fifth mounting slot 43 are both through holes. The fourth mounting slot 33 and the fifth mounting slot 43 are shaped to match the second mounting member 71.

[0112] In actual application, the working principle of the minimally invasive surgical instrument 1 provided in the application can be implemented according to the following examples:

[0113] When the first handle rod 11 and the second handle rod 21 move close to each other, the first connecting column 121 rotates around the first mounting member 80 connected with the first clamping rod 12 and moves relative to the first mounting member 80, specifically, moves from right to left (for specific left-right directions, please refer to Figure 1 ), and the whole movement is completed in the first sliding groove 31. Thus, the first connecting column 121 can drive the end of the first connecting rod 30 containing the first sliding groove 31 to move leftward. Since the middle part of the first connecting rod 30 is fixed by the second mounting member 71, the end of the first connecting rod 30 containing the second sliding groove 32 will move rightward, thereby driving the first cutting rod 50 to move leftward (i.e., the direction of the second cutting rod 60) through the second connecting column 51.

[0114] The third connecting column 221 rotates around the first mounting member 80 connected with the second clamping rod 22 and moves relative to the first mounting member 80, specifically, moves from left to right (for specific left-right directions, please refer to Figure 1 ), and the whole movement is completed in the third sliding groove 41. Thus, the third connecting column 221 can drive the end of the second connecting rod 40 containing the third sliding groove 41 to move rightward. Since the middle part of the second connecting rod 40 is fixed by the second mounting member 71, the end of the second connecting rod 40 containing the fourth sliding groove 42 will move leftward, thereby driving the second cutting rod 60 to move rightward (i.e., the direction of the first cutting rod 50) through the fourth connecting column 61.

[0115] Through the above working principle, the relative movement of the first cutting rod 50 and the second cutting rod 60 can be realized, so that the pressure between the first cutting rod 50 and the second cutting rod 60 is generated, thereby shearing the bladder tumor.

[0116] In the actual surgery, the second sleeve 100 is located in the urethra, the first cutting rod 50 and the second cutting rod 60 are located in the bladder, and the first holding assembly 10 and the second holding assembly 20 are located outside the patient's body.

[0117] The minimally invasive surgical instrument 1 provided by the embodiments of the present application has a compact structure and can be applied to various medical surgical application scenarios that require precise control.

[0118] It should also be understood that the first handle rod 11, the first clamping rod 12 and the first cutting rod 50 change at a proportional angle during the operation, and the second handle rod 21, the second clamping rod 22 and the second cutting rod 60 also change at a proportional angle during the operation.

[0119] The above has described the embodiments of the embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical application or technical improvement in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein. The scope of the embodiments of the present application is defined by the appended claims.

Claims

1. A minimally invasive surgical instrument comprising a handle assembly and a blade assembly, wherein the handle assembly comprises a first grip assembly and a second grip assembly, and the blade assembly comprises a first cutting rod and a second cutting rod, characterized in that: Also includes: a first connecting rod, one end of the first connecting rod being rotatably connected to the first gripping assembly, and the other end of the first connecting rod being rotatably connected to the first cutting rod; a second connecting rod, one end of the second connecting rod being rotatably connected to the second gripping assembly, and the other end of the second connecting rod being rotatably connected to the second cutting rod; connecting shaft; and The first casing; wherein The first connecting rod and the second connecting rod are connected via the connecting shaft; wherein the first connecting rod and the second connecting rod are respectively connected to the first sleeve via the connecting shaft; One end of the first connecting rod is provided with a first sliding groove, and the other end is provided with a second sliding groove; the first gripping assembly includes a first clamping rod, the first clamping rod is provided with a first connecting column, and the first connecting column is slidably connected to the first sliding groove; the first cutting rod is provided with a second connecting column, and the second connecting column is slidably connected to the second sliding groove; The second connecting rod is provided with a third sliding groove at one end and a fourth sliding groove at the other end; the second gripping assembly includes a second clamping rod, the second clamping rod is provided with a third connecting column, and the third connecting column is slidably connected to the third sliding groove; the second cutting rod is provided with a fourth connecting column, and the fourth connecting column is slidably connected to the fourth sliding groove; When the first gripping assembly and the second gripping assembly approach each other, the first gripping assembly drives the first cutting rod to move toward the second cutting rod through the first connecting rod, and the second gripping assembly drives the second cutting rod to move toward the first cutting rod through the second connecting rod.

2. The minimally invasive surgical instrument according to claim 1, characterized in that: The minimally invasive surgical instrument also includes multiple first mounting components, the first gripping assembly and the first cutting rod are both connected to the first connecting rod through corresponding first mounting components, and the second gripping assembly and the second cutting rod are both connected to the second connecting rod through corresponding first mounting components.

3. The minimally invasive surgical instrument according to claim 2, characterized in that: The first sleeve has an imaging component.

4. The minimally invasive surgical instrument according to claim 3, characterized in that: A plurality of first mounting grooves are provided on the outer side wall of the first sleeve, and each first mounting member is accommodated in a corresponding first mounting groove; The connecting shaft includes a plurality of second mounting components, the first connecting rod is connected to the first sleeve via corresponding second mounting components, and the second connecting rod is connected to the first sleeve via corresponding second mounting components.

5. The minimally invasive surgical instrument according to claim 4, characterized in that: The first sleeve is further provided with a plurality of second mounting grooves, and each second mounting member is accommodated in a corresponding second mounting groove.

6. The minimally invasive surgical instrument according to claim 1, characterized in that: The first gripping assembly includes a first handle rod, one end of the first clamping rod is connected to the first handle rod, and the other end of the first clamping rod is connected to the first connecting rod.

7. The minimally invasive surgical instrument according to claim 6, characterized in that: The second gripping assembly includes a second handle rod, one end of the second clamping rod is connected to the second handle rod, and the other end of the second clamping rod is connected to the second connecting rod.

8. The minimally invasive surgical instrument according to claim 5, characterized in that: The minimally invasive surgical instrument further includes a second sleeve, wherein a receiving space is provided in the second sleeve for receiving the first sleeve, the first connecting rod and the second connecting rod.

9. The minimally invasive surgical instrument according to claim 8, characterized in that: The second sleeve is further provided with a plurality of third mounting grooves, and one end of each second mounting member is accommodated in the corresponding second mounting groove, and the other end is accommodated in the corresponding third mounting groove.

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