Catheter system, puncture surgical instrument using the same, and endoscope device

Abstract

A catheter system, a puncture surgical instrument using the same, and an endoscope device provided by the present invention. The catheter system includes a catheter, a first bending adjustment assembly, and a second bending adjustment assembly. The first bending adjustment assembly and the second bending adjustment assembly are respectively connected to the catheter and can independently bend the catheter. The bending direction of the catheter by the first bending adjustment assembly is different from the bending direction of the catheter by the second bending adjustment assembly. Compared with the prior art, the first bending adjustment assembly and the second bending adjustment assembly bend the catheter, so that the bending range of the catheter is wider and the catheter bending is more flexible.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a catheter system, a puncture surgical instrument using the same, and an endoscope device. Background Art

[0002] A catheter system is usually a common instrument for organ puncture, drug or biomaterial injection, and body fluid aspiration. A catheter system generally includes a catheter and a driving mechanism. The driving mechanism is connected to the catheter and drives the catheter to bend.

[0003] The existing driving mechanism is generally connected to the catheter through a wire, so that the driving mechanism drives the wire to move, thereby driving the catheter to bend bidirectionally. Since the catheter is used, the bidirectional bending adjustment affects the movement range of the catheter, making the use of the catheter inconvenient. Summary of the Invention

[0004] Based on this, in view of the above technical problems, it is necessary to provide a catheter system that has a larger movement range of the catheter and is convenient to use.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A catheter system includes a catheter, a first bending adjustment component, and a second bending adjustment component. The first bending adjustment component and the second bending adjustment component are respectively connected to the catheter, and both can independently adjust the bending of the catheter. The bending direction of the catheter by the first bending adjustment component is different from the bending direction of the catheter by the second bending adjustment component.

[0007] The advantages of the above technical solution are as follows: When the first bending adjustment component and the second bending adjustment component adjust the bending of the catheter, the bending direction of the catheter by the first bending adjustment component is different from the bending direction of the catheter by the second bending adjustment component, so that the bending range of the catheter is wider; at the same time, the first bending adjustment component and the second bending adjustment component can respectively adjust the bending of the catheter, and the operator can more flexibly adjust the bending direction of the catheter.

[0008] In a feasible solution, the bending direction of the catheter by the first bending adjustment component and the bending direction of the catheter by the second bending adjustment component are perpendicular to each other. It can be understood that when the first bending adjustment component and the second bending adjustment component adjust the bending of the catheter, the catheter has the bending ability in multiple directions, which is convenient for selective operation of the catheter.

[0009] In a feasible solution, the bending direction of the catheter by the first bending adjustment component is the vertical direction, and the bending direction of the catheter by the second bending adjustment component is the horizontal direction. This is convenient for the operator to operate the first bending adjustment component and the second bending adjustment component, and is convenient for the operator to more easily control the bending direction of the catheter.

[0010] In a feasible solution, the first bending adjustment component is a knob-type bending adjustment component, and the second bending adjustment component is a trigger-type bending adjustment component, which facilitates the operator to operate the first bending adjustment component and the second bending adjustment component.

[0011] In a feasible solution, it further includes a housing. The catheter is connected to one end of the housing. The first bending adjustment component includes a bending adjustment knob disposed on the housing, and the second bending adjustment component includes a bending adjustment trigger disposed on the housing. The bending adjustment knob is disposed close to the catheter, and the bending adjustment trigger is disposed away from the catheter. When the operator holds the housing, one hand operates the bending adjustment knob and the other hand operates the bending adjustment trigger, which facilitates the operator to operate the first bending adjustment component and the second bending adjustment component.

[0012] In a feasible solution, the housing is in the shape of a "buttstock". It can be understood that the setting of the "buttstock" enables the operator to conveniently hold the housing when adjusting the first bending adjustment component and the second bending adjustment component.

[0013] In a feasible solution, a handle is provided at one end of the housing away from the catheter. It can be understood that by providing the handle, the operator can conveniently hold the housing when adjusting the first bending adjustment component and the second bending adjustment component.

[0014] In a feasible solution, the rotation axis of the bending adjustment knob and the rotation axis of the bending adjustment trigger are perpendicular to each other. When the operator adjusts the first bending adjustment component and the second bending adjustment component, when one hand of the operator holds the housing, the bending adjustment knob can be operated, and when the other hand holds the housing, the bending adjustment trigger can be operated, which facilitates the operator to operate the bending adjustment knob and the bending adjustment trigger.

[0015] In a feasible solution, the first bending adjustment component includes an adjusting member, a connecting unit, and a wire. One end of the wire is connected to the catheter, and the other end is connected to the connecting unit. An adjusting groove is provided on the adjusting member. One end of the adjusting groove is away from the rotation center of the adjusting member, and the other end is close to the rotation center. The end of the connecting unit away from the wire moves in the adjusting groove and moves away from / close to the rotation center under the action of the adjusting member.

[0016] The advantages of the above technical solution are as follows: During the rotation of the adjusting member, the wire is driven to move, and different acting forces are applied by the wire to the catheter, thereby achieving the purpose of bending the catheter. It can be understood that in this application, the rotation of the adjusting member is converted into the bending movement of the catheter, which is not only simple in structure and convenient to operate, but also has a wide application prospect.

[0017] In a feasible solution, the connecting unit includes a connecting portion and a sliding portion. One end of the connecting portion is connected to the wire drawing, and the other end is connected to the sliding portion. The sliding portion slides in the adjustment groove, making it more convenient for the connecting unit to be connected to the wire drawing and the adjusting member.

[0018] The sliding portion slides in the adjustment groove to restrict the movement of the wire drawing in multiple directions.

[0019] In a feasible solution, a limiting and supporting portion is provided on the adjusting member. The limiting and supporting portion is arranged at both ends of the adjustment groove and is used to support the connecting unit. The limiting and supporting portion will support the connecting portion to prevent the sliding portion on the connecting unit from separating from the adjustment groove.

[0020] In a feasible solution, the adjustment groove is arranged in an arc shape or a straight line shape. When the operator rotates the adjusting member at a constant speed, the speed of the wire drawing moving in the first direction is stable.

[0021] In a feasible solution, an operating member for holding is provided on the adjusting member. This has the effect of facilitating the operator to operate the adjusting member.

[0022] In a feasible solution, the adjusting member is arranged in a circular shape, and a rotating shaft is provided at the center of the adjusting member. By rotating the shaft on the housing, it is convenient to adjust the adjusting member.

[0023] In a feasible solution, the second bending adjustment assembly includes:

[0024] A fixed seat, on which two limiting holes extending along its axial direction are provided, and the two limiting holes are respectively provided on two outer side walls of the fixed seat in a one-to-one correspondence;

[0025] Two driven members, which are respectively installed in the limiting holes. A plurality of wire passing holes extending along its axial direction are formed through the driven members;

[0026] A flexible unit, including a plurality of flexible members corresponding to the wire passing holes. One end of the flexible member is connected to the catheter, and the other end of the flexible member passes through the corresponding wire passing hole and is fixed relative to the driven member;

[0027] A rotating member, which is sleeved on the fixed seat and is in threaded cooperation with the two driven members. The rotating member rotates relative to the fixed seat, and during the rotation process, the rotating member drives the driven members to move in the limiting holes to drive the catheter to bend.

[0028] The advantages of the above technical solution are as follows: The operator rotates the rotating member. The rotating member can rotate relative to the fixed seat, and the rotating member drives the driven member to move in the limiting hole. When the two driven members move away from or towards each other, the driven member drives the flexible unit to pull the catheter to bend in two directions.

[0029] The flexible members converge together through a plurality of wire threading holes, which improves the connection strength between the flexible members and the driven member and prevents the flexible members from detaching from the driven member.

[0030] In a feasible solution, one end of the plurality of flexible members connected to the catheter is relatively contracted and extended. The flexible unit is formed by converging a plurality of flexible members together, so that the connection between the flexible members and the catheter is simpler and more firm, strengthening the connection strength between the flexible unit and the driven member, and preventing the flexible unit from detaching from the driven member during the process of the driven member pulling the catheter through the flexible unit.

[0031] In a feasible solution, one end of the plurality of flexible members connected to the catheter converges at the same length position of the flexible member. The flexible unit is formed by converging a plurality of flexible members together, so that the connection between the flexible members and the catheter is simpler and more firm, strengthening the connection strength between the flexible unit and the driven member, and preventing the flexible unit from detaching from the driven member during the process of the driven member pulling the catheter through the flexible unit.

[0032] In a feasible solution, the driven member is provided with a groove at one of the plurality of wire threading holes, and a mounting member is installed in the groove. The mounting member is used to fix the flexible member in the groove. By bolting the flexible member to the mounting member, it is convenient to fix the flexible member on the driven member, and the mounting member is fixed in the groove, which can prevent the mounting member from detaching from the driven member.

[0033] In a feasible solution, the plurality of wire threading holes are arranged at intervals in the circumferential direction. When the flexible member passes through the wire threading hole, one end of the flexible member connected to the driven member is also arranged at intervals in the circumferential direction, so that the forces on the plurality of flexible members are uniform.

[0034] In a feasible solution, the limiting holes are opened on both sides of the fixed seat in the horizontal direction, and the two driven members are respectively arranged on both sides of the fixed seat in the horizontal direction. By the driven members moving horizontally in the limiting holes on both sides of the fixed seat, the flexible unit is enabled to pull the catheter to move horizontally.

[0035] In a feasible solution, the rotating member is provided with internal threads, and the driven member is provided with external threads, and the internal threads are engaged with the external threads. During the rotation of the rotating member, through the engagement of the internal threads on the rotating member and the external threads on the driven member, the driven member has higher precision in moving in the limiting hole under the drive of the rotating member.

[0036] In a feasible solution, the internal thread includes a right-handed thread and a left-handed thread. The external thread of one of the driven members is a right-handed thread, and the external thread of the other is a left-handed thread. The driven member with the right-handed thread meshes with the rotating member with the right-handed thread, and the driven member with the left-handed thread meshes with the rotating member with the left-handed thread. When the operator rotates the rotating member, the driven member with the left-handed thread and the driven member with the right-handed thread move in opposite directions or relatively under the drive of the rotating member. When one driven member pulls the catheter through the flexible unit, the other driven member releases the tension between the flexible unit and the catheter, enabling the two driven members to cooperate with each other to pull the catheter for bending in two directions.

[0037] In a feasible solution, an anti-slip member is provided on the outer wall of the rotating member. Through the anti-slip member on the rotating member, the operator can conveniently hold the rotating member. The anti-slip member increases the friction between the operator's hand and the rotating member, preventing the operator's hand from slipping on the rotating member.

[0038] The present invention also provides the following technical solutions:

[0039] A puncture surgical instrument includes a catheter system and a puncture needle. The catheter system adopts the catheter system as described above. The puncture needle is inserted into the catheter, and the catheter system can drive the puncture needle to bend.

[0040] The advantages of the above technical solution are as follows: One end of the puncture needle is placed inside the housing, and the other end passes through and extends out of the catheter. The puncture needle can slide inside the catheter during the puncture process. When the catheter on the catheter system bends, the puncture needle inside the catheter will bend under the drive of the catheter. An endoscope device includes a catheter system and an endoscope. The catheter system adopts the catheter system as described above. The endoscope is inserted into the catheter, and the catheter system can drive the endoscope to bend.

[0041] The advantages of the above technical solution are as follows: One end of the endoscope is placed inside the housing, and the other end passes through and extends out of the catheter. When the catheter on the catheter system bends, the endoscope inside the catheter will bend under the drive of the catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The following drawings are only used to enable those skilled in the art to better understand the technical solutions of the present invention and are not a limitation to the present invention. Those skilled in the art can obtain other drawings according to the technical solutions of the present invention.

[0043] Figure 1 It is a schematic structural diagram of a catheter system according to an embodiment provided by the present invention;

[0044] Figure 2 It is a partial structural schematic diagram of a catheter system according to an embodiment provided by the present invention Figure 1 ;

[0045] Figure 3 is Figure 2 a schematic enlarged view of part A of

[0046] Figure 4 position Figure 3 and a schematic view of the bending adjustment trigger structure in

[0047] Figure 5 is a schematic partial structure view of a catheter system according to an embodiment provided by the present invention Figure 2 ;

[0048] Figure 6 is a schematic partial structure view of a catheter system according to an embodiment provided by the present invention Figure 3 ;

[0049] Figure 7 is Figure 6 a schematic enlarged view of part A of

[0050] Figure 8 is Figure 5 a schematic view of the structure of the fixed seat and the follower in

[0051] Figure 9 is Figure 5 a schematic view of the bending adjustment knob structure in

[0052] Reference numeral description:

[0053] 100, catheter system; 101, housing; 102, puncture needle; 10, catheter; 11, flexible section; 30, first bending adjustment assembly; 31, bending adjustment trigger; 311, adjustment groove; 312, limit support portion; 313, rotating shaft; 32, wire drawing; 33, connecting unit; 331, connecting portion; 332, sliding portion; 34, limiting unit; 341, limiting member; 342, limiting groove; 35, operating member; 40, second bending adjustment assembly; 41, fixed seat; 411, through hole; 412, limiting hole; 42, follower; 421, wire threading hole; 422, groove; 423, external thread; 43, flexible unit; 431, flexible member; 44, bending adjustment knob; 441, anti-slip member; 442, internal thread. Detailed implementation manners

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0055] To better describe and illustrate the embodiments of the present application, one or more drawings may be referred to. However, additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the inventions, currently described embodiments, or preferred modes of the present application.

[0056] It should be noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or there may also be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component present simultaneously.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0058] As Figure 1 and Figure 2 shown, the present invention provides a catheter system 100, and the catheter system 100 is used for medical puncture or injection of drugs, biological materials, or aspiration of body fluids. In this embodiment, the catheter system 100 is used to puncture the heart (not shown in the figure) and inject a non-shrinking substance such as a self-coagulating and biocompatible hydrogel into the left ventricular wall of the heart.

[0059] Specifically, the catheter system 100 includes a catheter 10, a first bending adjustment assembly 30, and a second bending adjustment assembly 40. The first bending adjustment assembly 30 and the second bending adjustment assembly 40 are respectively connected to the catheter 10 and are both capable of independently adjusting the bending of the catheter 10. The bending directions of the catheter 10 by the first bending adjustment assembly 30 and the second bending adjustment assembly 40 are different. Thus, when the first bending adjustment assembly 30 and the second bending adjustment assembly 40 adjust the bending of the catheter 10, the bending range of the catheter 10 is wider, the catheter 10 is more flexible in bending adjustment, and the puncture is more convenient.

[0060] Preferably, the bending directions of the catheter 10 by the first bending adjustment assembly 30 and the second bending adjustment assembly 40 are perpendicular to each other, that is, the catheter 10 can be bent within two mutually perpendicular planes, so as to facilitate selective operation of the catheter 10 and increase the adjustment range of the catheter 10.

[0061] Further, the bending direction of the first bending assembly 30 for the catheter 10 is the vertical direction, and the bending direction of the second bending assembly 40 for the catheter 10 is the horizontal direction. It can be understood that bending the catheter 10 in the vertical direction and / or the horizontal direction can facilitate the operator to operate the first bending assembly 30 and the second bending assembly 40, and is convenient for the operator to control the bending direction of the catheter.

[0062] In this embodiment, the first bending assembly 30 is a knob-type bending assembly, and the second bending assembly 40 is a trigger-type bending assembly. Of course, in other embodiments, the structures of the first bending assembly 30 and the second bending assembly 40 can be interchanged or the same.

[0063] Further, as Figure 1 shown, the catheter system 100 further includes a housing 101, and both the first bending assembly 30 and the second bending assembly 40 are mounted on the housing 101.

[0064] Wherein, in this embodiment, the housing 101 is in the shape of a "buttstock" so as to facilitate the operator to hold the housing 101 during operation. Of course, in other embodiments, the housing 101 can also be in other shapes as long as it can facilitate the operator to hold it.

[0065] Preferably, one end of the housing 101 away from the catheter 10 extends in a direction perpendicular to the axis of the housing, so that one end of the housing 101 away from the catheter 10 is arc-shaped and forms a shape similar to a "buttstock".

[0066] In one embodiment, a handle (not shown in the figure) is provided at one end of the housing 101 away from the catheter 10. Specifically, the handle is arc-shaped, and the operator holds the handle to hold the housing 10.

[0067] Further, as Figure 1 shown, the catheter 10 is connected to one end of the housing 101. Preferably, the catheter 10 is connected to one end of the housing 101 away from the handle. The first bending assembly 30 is disposed close to the catheter 10, and the second bending assembly 40 is disposed away from the catheter 10.

[0068] It can be understood that when the operator holds the housing 101, one hand operates the first bending assembly 30 and the other hand operates the second bending assembly 40, so that the two hands independently operate the first bending assembly 30 and the second bending assembly 40 respectively.

[0069] This embodiment also provides a puncture surgical instrument, which includes a catheter system 100 and a puncture needle 102. The puncture needle 102 is inserted into the catheter system 100 and can be bent under the drive of the catheter system 100. In this embodiment, the catheter system 100 can be referred to as described in the previous part of this specific implementation manner, and will not be repeated here.

[0070] One end of the puncture needle 102 is placed inside the housing 101, and the other end passes through and extends out of the catheter 10. The puncture needle 102 can slide inside the catheter 10.

[0071] Specifically, the puncture needle 102 has a puncture end and a connection end arranged opposite to each other. Among them, the connection end of the puncture needle 102 is placed inside the housing 101, and the puncture end of the puncture needle 102 is used for puncturing. The puncture end of the puncture needle 102 pierces to a predetermined target point and performs injection or aspiration, providing a basis for subsequent treatment. It should be explained that the puncture end of the puncture needle 102 refers to the end of the puncture needle 102 far from the surgical operator, and the connection end refers to the end of the puncture needle 102 close to the surgical operator. Of course, in this embodiment, defining the above puncture end or connection end aims to more clearly explain the structure of the puncture needle 102 and the puncture principle.

[0072] This embodiment also provides an endoscope device, which includes a catheter system 100 and an endoscope (not shown in the figure). The endoscope is disposed inside the catheter system 100. The catheter system 100 can be referred to as described in the previous part of this specific implementation manner, and will not be repeated here.

[0073] Specifically, the endoscope is disposed inside the catheter 10 and moves along with the movement of the catheter 10.

[0074] It can be understood that the above has described that the catheter system 100 can be applied to an endoscope device or a puncture surgical instrument. Of course, in other embodiments, the catheter system 100 can also be applied to other scenarios, which will not be enumerated here.

[0075] Please continue to refer to Figure 1 , the catheter 10 is generally cylindrical. Of course, in other embodiments, the catheter 10 can also be in other shapes, such as oval. The catheter 10 can be made of a medical polymer material to improve the structural strength of the catheter 10, thereby facilitating the puncture of the catheter 10. The medical-grade polymer materials include, but are not limited to, polyurethane, polypropylene, polyethylene, polycarbonate, ABS resin, modified nylon, etc.

[0076] The catheter 10 has an axial direction and a radial direction. The axial direction of the catheter 10 is the first direction, and the radial direction of the catheter 10 is the second direction. Preferably, along the first direction, a through guiding hole (not shown in the figure) is provided on the catheter 10. When the catheter 10 reaches a predetermined target point, the puncture needle 102 will move along the guiding hole, so that the puncture end of the puncture needle 102 punctures the target point, and body fluid is aspirated through the puncture needle 102, or drugs and biological materials are injected or delivered through the puncture needle 102.

[0077] Further, as Figure 1 shown, a flexible section 11 is provided on the catheter 10, and the catheter 10 is bent through the flexible section 11. Preferably, the radius at which the flexible section 11 can be bent is adjustable, that is, the puncture path of the catheter 10 can be adjusted (the path of the catheter 10 can be arbitrarily adjusted), so that the catheter 10 has stronger operability, better anti-bending strength, stronger ability to bypass blood vessels, bones, and nerve tissues, and reduces the risk of puncturing organs and more accurately punctures to the target point.

[0078] As Figure 1 and Figure 2 shown, the first bending adjustment assembly 30 includes a bending adjustment trigger 31 and a wire 32. One end of the wire 32 is connected to the catheter 10, and the other end is connected to the bending adjustment trigger 31.

[0079] It can be understood that the bending adjustment trigger 31 is rotatably installed in the housing 101, and a part of the bending adjustment trigger 31 passes through and extends outside the housing 101 for the operator to operate. One end of the wire 32 is connected to the outer wall of the catheter 10, and the other end is connected to the bending adjustment trigger 31.

[0080] Specifically, the operator rotates the bending adjustment trigger 31 to make the bending adjustment trigger 31 rotate on the housing 101. During the rotation of the bending adjustment trigger 31, the wire can be wound around the bending adjustment trigger 31 to drive the movement of the wire 32. The wire 32 exerts different acting forces on the catheter 10 to bend the flexible section 11 of the catheter 10, and then perform puncture.

[0081] Among them, the wire 32 is generally cylindrical, and the axis of the wire 32 is arranged side by side with the axis of the catheter 10. Of course, in other embodiments, the wire 32 can also be in other shapes, such as oval. The wire 32 is made of a medical polymer material. While the wire 32 has flexibility, the structural strength of the wire 32 is improved, so as to facilitate pulling the catheter 10 to bend and bending along with the bending of the catheter 10 to adapt to the change of the position / angle among the wire 32, the catheter 10, and the bending adjustment trigger 31. The medical grade polymer materials include, but are not limited to, polyurethane, polypropylene, polyethylene, polycarbonate, ABS resin, modified nylon, etc.

[0082] The bending trigger 31 is generally circular. Of course, in other embodiments, the bending trigger 31 can also be in other shapes, such as oval. The bending trigger 31 can be made of metal or medical plastic materials. Rotating shafts 313 are installed on both sides of the bending trigger 31. The rotating shafts 313 are installed at the center of the circle of the bending trigger 31. The bending trigger 31 is installed on the housing 101 through the rotating shafts 313 and can rotate on the housing 101 through the rotating shafts 313. The position where the bending trigger 31 rotates around the rotating shafts 313 is the rotation center.

[0083] Further, as Figure 3 and Figure 4 shown, a connection unit 33 is provided between the wire drawing 32 and the bending trigger 31. An adjustment groove 311 is formed on the bending trigger 31. One end of the adjustment groove 311 is far from the rotation center of the bending trigger 31, and the other end is close to the rotation center. The end of the connection unit 33 far from the wire drawing 32 moves in the adjustment groove 311 and moves away from / close to the rotation center under the action of the bending trigger 31.

[0084] It can be understood that the wire drawing 32 is bolted to the connection unit 33. The wire drawing 32 is placed in the adjustment groove 311 through the connection unit 33 and slides in the adjustment groove 311 through the connection unit 33. It can be understood that the setting of the connection unit 33 can facilitate the connection between the wire drawing 32 and the bending trigger 31; thus, when the bending trigger 31 drives the wire drawing 32, the operability of the first bending assembly 30 is stronger.

[0085] Specifically, when the bending trigger 31 rotates, the adjustment groove 311 formed on the bending trigger 31 will rotate with the rotation of the bending trigger 31. The connection unit 33 moves along the adjustment groove 311, and the housing 101 limits the connection unit 33 so that the connection unit 33 does not move in the second direction; at the same time, the connection unit 33 will move along the first direction and move away from / close to the rotation point of the bending trigger 31, so that the bending trigger 31 pulls the catheter 10 to bend.

[0086] Among them, the two ends of the adjustment groove 311 are not collinear with the rotation center.

[0087] Preferably, the adjustment groove 311 is arranged in an arc or a straight line. It can be understood that when the adjustment groove 311 is arranged in an arc or a straight line, when the operator rotates the bending trigger 31 at a constant speed, the speed of the wire drawing 32 moving along the first direction can be stable.

[0088] Further, as Figure 4 shown, an operating member 35 for holding is provided on the bending trigger 31, and the operating member 35 extends outside the housing 101.

[0089] It can be understood that the operating member 35 is provided on the bending trigger 31. The operating member 35 is for the operator to hold, so as to adjust the rotation of the bending trigger 31 on the housing 101.

[0090] Specifically, the operator's hand pulls the operating member 35, and drives the bending trigger 31 through the operating member 35, so that the bending trigger 31 rotates on the housing 101, achieving the effect that it is convenient for the operator to operate the bending trigger 31.

[0091] Wherein, the operating member 35 is arranged in an arc shape, so that the operating member 35 conforms to ergonomics and is more convenient for the operator to hold.

[0092] Furthermore, as Figure 3 shown, the connecting unit 33 includes a connecting portion 331 and a sliding portion 332. One end of the connecting portion 331 is connected to the wire drawing 32, and the other end is connected to the sliding portion 332. The sliding portion 332 slides in the adjusting groove 311.

[0093] It can be understood that the sliding portion 332 is placed in the adjusting groove 311 and can slide along the adjusting groove 311. When the bending trigger 31 rotates, the connecting unit 33 abuts against the inner wall of the housing 101. The sliding portion 332 will not move in the second direction as the bending trigger 31 rotates. At this time, the sliding portion 332 moves along the adjusting groove 311 in the radial direction of the bending trigger 31, so that the connecting unit 33 moves in the first direction, and the wire drawing 32 is bolted to the connecting portion 331.

[0094] Wherein, the connecting portion 331 and the sliding portion 332 are integrally arranged, so as to facilitate the processing and manufacturing of the connecting unit 33.

[0095] Furthermore, as Figure 4 shown, the bending trigger 31 is provided with a limiting and supporting portion 312. The limiting and supporting portion 312 is arranged at both ends of the adjusting groove 311 and is used to support the connecting unit 33.

[0096] It can be understood that when the connecting portion 331 on the connecting unit 33 moves to both ends of the adjusting groove 311, the limiting and supporting portion 312 will support the connecting portion 331, preventing the sliding portion 332 on the connecting unit 33 from separating from the adjusting groove 311.

[0097] Wherein, the limiting and supporting portion 312 is integrally arranged with the bending trigger 31.

[0098] Furthermore, as Figure 3 shown, the first bending assembly 30 further includes a limiting unit 34. The limiting unit 34 is connected to the housing 101 and is used to limit the connecting unit 33.

[0099] It can be understood that the limiting unit 34 can limit the movement direction of the connecting portion 331 so that the connecting unit 33 moves along the first direction; and when the catheter 10 is reset, the connecting unit 33 is prevented from moving along the second direction.

[0100] Preferably, the limiting unit 34 includes a limiting member 341. The limiting member 341 is installed on the housing 101. A limiting groove 342 is defined between the limiting member 341 and the housing 101, and the connecting portion 331 slides in the limiting groove 342.

[0101] It can be understood that the connecting portion 331 is placed in the limiting groove 342, and the limiting groove 342 limits the connecting portion 331 to move along the first direction. In this embodiment, the inner wall of the housing 101 is arc-shaped. The limiting member 341 is installed on the inner wall of the housing 101, and a limiting groove 342 for the connecting portion 331 on the connecting unit 33 to slide is formed between the limiting member 341 and the housing 101.

[0102] As Figure 5 and Figure 6 shown, the second bending assembly 40 includes a fixed seat 41, a driven member 42, a bending knob 44 and a flexible unit 43. Two limiting holes 412 extending along the axial direction thereof are defined in the fixed seat 41. The number of the driven members 42 is two, and the two driven members 42 are respectively installed in the limiting holes 412. One end of the flexible unit 43 is connected to the catheter 10, and the other end is connected to the driven member 42. The bending knob 44 is sleeved on the fixed seat 41 and cooperates with the two driven members 42. The bending knob 44 rotates relative to the fixed seat 41, and the bending knob 44 drives the driven member 42 to move in the limiting hole 412 during rotation, so as to drive the catheter 10 to bend.

[0103] Specifically, the operator rotates the bending knob 44. The bending knob 44 can rotate relative to the fixed seat 41. The bending knob 44 drives the driven member 42 to move in the limiting hole 412. The two driven members 42 move in opposite or opposite directions. The driven member 42 drives the flexible unit 43, so that the flexible unit 43 drives the puncture end of the catheter 10 to bend, thereby achieving the purpose of bending the flexible section 11 of the catheter 10 as a whole.

[0104] Wherein, the rotation axis of the bending knob 44 is perpendicular to the rotation axis of the bending trigger 31, which is convenient for the operator to operate the bending knob 44 and the bending trigger 31.

[0105] Furthermore, as Figure 6 and Figure 7As shown, the flexible unit 43 includes a plurality of flexible members 431. One end of each flexible member 431 is connected to the conduit 10, and the other end of the flexible member 431 is fixed relative to the driven member 42.

[0106] It can be understood that by providing a plurality of flexible members 431, the connection strength between the flexible members 431 and the driven member 42 is improved, and the phenomenon of the flexible members 431 being pulled off when connected to the driven member 42 is avoided.

[0107] Further, one ends of the plurality of flexible members 431 connected to the conduit 10 are relatively contracted and extended, so that the connection between the flexible members 431 and the conduit 10 is simpler and more secure.

[0108] Preferably, one ends of the plurality of flexible members 431 connected to the conduit 10 converge at the same length position of the flexible members, further making the connection between the flexible members 431 and the conduit 10 simpler and more secure.

[0109] Further, as Figure 6 and Figure 7 shown, a plurality of threading holes 421 extending along the axial direction thereof are formed through the driven member 42. One end of the flexible member 431 is connected to the conduit 10, and the other end is inserted into the corresponding threading hole 421 and fixed relative to the driven member 42.

[0110] Among them, the driven member 42 can be made of metal or medical plastic material. The driven member 42 is generally square. The driven member 42 is installed in the limit hole 412 and one end of the driven member 42 extends out of the limit hole 412, and the driven member 42 can slide along the limit hole 412.

[0111] It can be understood that the flexible members 431 are brought together through a plurality of threading holes 421, which improves the connection strength between the flexible members 431 and the driven member 42 and prevents the flexible members 431 from detaching from the driven member 42.

[0112] In this embodiment, as Figure 7 shown, the cross-sectional shape of the threading hole 421 is circular. Of course, in other embodiments, the cross-sectional shape of the threading hole 421 is elliptical or polygonal.

[0113] Among them, the plurality of threading holes 421 are arranged at intervals in the circumferential direction so that the forces on the plurality of flexible members 431 are evenly distributed.

[0114] Preferably, the number of the flexible members 431 is three. Three wire threading holes 421 are formed in the driven member 42. One ends of the three flexible members 431 converge together and are connected to the conduit 10, and the other ends of the three flexible members 431 respectively pass through the three wire threading holes 421 and converge and are fixed to the driven member 42.

[0115] Further, as Figure 7 shown, a groove 422 is formed in the driven member 42 at one of the multiple wire threading holes 421. An installation member (not shown in the figure) is installed in the groove 422, and the installation member is used to fix the flexible member to the groove 422.

[0116] It can be understood that the installation member is fixedly installed in the groove 422, and the groove 422 serves to facilitate the installation of the installation member. The flexible member 431 is bolted to the installation member to prevent the flexible member 431 from separating from the driven member 42. Among them, the length of the shortest side of the installation member is greater than the diameter of the wire threading hole 421 to prevent the installation member from passing through the wire threading hole.

[0117] Preferably, the contour of the installation member is adapted to the contour of the inner wall of the groove 422. When the flexible member 431 pulls the conduit 10, the installation member is subjected to the force of the flexible member 431, preventing the installation member from shaking in the groove 422 and causing a reduction in the bending accuracy of the conduit 10.

[0118] Further, a fixing unit (not shown in the figure) is provided between the installation member and the driven member 42, and the fixing unit detachably fixes the installation member to the driven member 42.

[0119] Among them, the fixing unit is any one of a snap-fit structure, a magnetic structure or a bolt structure.

[0120] Preferably, the fixing unit can be a magnetic structure. The magnetic structure includes a magnetic block (not shown in the figure) and a mating block (not shown in the figure). The magnetic block is provided on the driven member 42, and the mating block is provided on the installation member. When the installation member is installed on the driven member 42, the magnetic block is magnetically connected to the mating block, and the installation member is fixed to the driven member 42 by the mutual attraction of the magnetic block and the mating block. Among them, the mating block has ferromagnetism.

[0121] Of course, in another embodiment, the magnetic block is provided on the installation member, the mating block is provided on the driven member 42, and the magnetic block is magnetically connected to the mating block.

[0122] Further, as Figure 6 and Figure 7As shown, an internal thread 442 is provided inside the bending adjustment knob 44, and an external thread 423 is provided on the driven member 42. The internal thread 442 meshes with the external thread 423.

[0123] It can be understood that when the operator rotates the bending adjustment knob 44, the relative rotation of the bending adjustment knob 44 with respect to the fixed seat 41 is converted into the movement of the driven member 42 along the limiting hole 412 by means of a threaded connection. At the same time, a self-locking phenomenon can be achieved through the threaded connection between the bending adjustment knob 44 and the driven member 42, preventing the driven member 42 from moving along the limiting hole 412 after being subjected to force (except the force of the bending adjustment knob 44).

[0124] Furthermore, as Figure 6 and Figure 7 shown, the internal thread 442 includes a right-handed thread and a left-handed thread. The external thread 423 of one of the driven members 42 is a right-handed thread, and the external thread 423 of the other is a left-handed thread. The driven member 42 with the right-handed thread meshes with the bending adjustment knob 44 with the right-handed thread, and the driven member 42 with the left-handed thread meshes with the bending adjustment knob 44 with the left-handed thread.

[0125] It can be understood that the right-handed thread and the left-handed thread of the internal thread 442 are arranged along the axial direction of the bending adjustment knob 44. Whether the operator rotates the bending adjustment knob 44 clockwise or counterclockwise, the movement directions of the two driven members 42 away from or towards each other cause the driven members 42 to pull the flexible units 43 respectively connected to them, and the two flexible units 43 are correspondingly tightened or relaxed, thereby achieving the bending of the catheter 10.

[0126] Furthermore, as Figure 8 shown, a through hole 411 for the puncture needle 102 to pass through is provided on the fixed seat 41, and the through hole 411 can support the puncture needle 102.

[0127] It can be understood that the fixed seat 41 can be made of stainless steel or medical plastic. The fixed seat 41 has an axis, the axis of the fixed seat 41 is the same as the first direction, a through hole 411 is provided on the fixed seat 41 in a penetrating manner, and the puncture needle 102 passes through the through hole 411 for connection with an external suction / infusion device. The limiting hole 412 is provided on the fixed seat 41 along the axial direction.

[0128] Furthermore, as Figure 8 shown, two of the limiting holes 412 are correspondingly provided on the two outer side walls of the fixed seat 41.

[0129] Preferably, the limiting hole 412 is provided horizontally on both sides of the fixed seat 41, and the two driven members 42 are respectively arranged horizontally on both sides of the fixed seat 41.

[0130] Furthermore, as Figure 9 shown, the bending adjustment knob 44 is generally cylindrical, and the bending adjustment knob 44 can be made of metal or medical plastic. The bending adjustment knob 44 is rotatably connected to the housing 101.

[0131] Preferably, an anti-slip member 441 is provided on the outer wall of the bending adjustment knob 44. The operator can conveniently hold the bending adjustment knob 44. The anti-slip member 441 increases the friction between the operator's hand and the bending adjustment knob 44, preventing the hand of the operator from slipping on the bending adjustment knob 44.

[0132] In this embodiment, the anti-slip member 441 is an anti-slip pattern. Of course, in other embodiments, the anti-slip member 441 can be an anti-slip protrusion, a rubber sheet, etc., as long as this structure can play an anti-slip role.

[0133] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0134] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A catheter system, characterized in that: it includes a catheter, a first bending adjustment component, a second bending adjustment component and a housing. The catheter is connected to one end of the housing. A flexible section is provided on the catheter, and the catheter is bent through the flexible section. The first bending adjustment component and the second bending adjustment component are respectively connected to the catheter and can independently adjust the bending of the catheter. The bending direction of the catheter by the first bending adjustment component is different from the bending direction of the catheter by the second bending adjustment component; the first bending adjustment component is a trigger - type bending adjustment component. The first bending adjustment component includes a bending trigger and a wire. The bending trigger is arranged away from the catheter, and the bending trigger is rotatably installed in the housing. A part of the bending trigger passes through and extends outside the housing. One end of the wire is connected to the outer wall of the catheter, and the other end is connected to the bending trigger. During the rotation of the bending trigger, the wire can be wound around the bending trigger to drive the movement of the wire. Different forces are applied by the wire to the catheter to bend the flexible section of the catheter; the second bending adjustment component is a knob - type bending adjustment component. The second bending adjustment component includes a fixed seat, a driven member, a bending adjustment knob and a flexible unit. Two limiting holes extending along its axial direction are provided on the fixed seat. The number of driven members is two, and the two driven members are respectively installed in the limiting holes. One end of the flexible unit is connected to the catheter, and the other end is connected to the driven member. The bending adjustment knob is arranged on the housing and close to the catheter. The bending adjustment knob is sleeved on the fixed seat and cooperates with the two driven members. The bending adjustment knob rotates relative to the fixed seat. During the rotation of the bending adjustment knob, the two driven members are driven to move away from or towards each other, so that the flexible unit drives the catheter to bend.

2. The catheter system according to claim 1, characterized in that: the bending direction of the catheter by the first bending adjustment component and the bending direction of the catheter by the second bending adjustment component are perpendicular to each other.

3. The catheter system according to claim 1 or 2, characterized in that: the bending direction of the catheter by the first bending adjustment component is the vertical direction, and the bending direction of the catheter by the second bending adjustment component is the horizontal direction.

4. The catheter system according to claim 1, characterized in that: the housing is in the shape of a "buttstock".

5. The catheter system according to claim 1, characterized in that: a handle is provided at one end of the housing away from the catheter.

6. The catheter system according to claim 1, characterized in that: the rotation axis of the bending adjustment knob and the rotation axis of the bending trigger are perpendicular to each other.

7. A puncture surgical instrument, characterized in that, it includes a catheter system and a puncture needle. The catheter system adopts the catheter system according to any one of claims 1 - 6. The puncture needle is inserted into the catheter, and the catheter system can drive the puncture needle to bend.

8. An endoscope device, characterized in that, It includes a catheter system and an endoscope. The catheter system adopts the catheter system described in any one of claims 1-6. The endoscope is inserted through the catheter, and the catheter system can drive the endoscope to bend.

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