CN210871923U - Catheter system, and puncture surgical instrument and endoscope device using same - Google Patents

Abstract

The utility model provides a pair of pipe system and use its puncture surgical instruments, endoscope device, pipe system include that pipe, first accent bend subassembly and second transfer the subassembly that bends, first accent bend subassembly and the second transfer the subassembly respectively with pipe connection, and the homoenergetic is independently right the pipe is transferred and is bent, first accent bend subassembly is right the accent of pipe bend direction with the second is transferred the subassembly that bends right the accent of pipe is bent the direction difference, and this scheme is for prior art, and first accent bend subassembly and second are transferred the subassembly that bends to the pipe, make the crooked scope of pipe wider, and the pipe is transferred and is bent more nimble.

Description

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

Technical Field

The utility model relates to the field of medical equipment, especially relate to a pipe system and use its puncture surgical instruments, endoscope device.

Background

Catheter systems are commonly used as instruments for organ puncture, injection of drugs or biological materials, and aspiration of body fluids. A catheter system generally includes a catheter and a drive mechanism coupled to the catheter and driving the catheter to bend.

The existing driving mechanism is generally connected with the guide pipe through a pull wire, so that the pull wire is driven to move through the driving mechanism to drive the guide pipe to bend bidirectionally. When the catheter is used, the bidirectional bending affects the moving range of the catheter, so that the use of the catheter is inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a catheter system with a wider range of motion and a convenient use.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a pipe system, includes that pipe, first accent bend subassembly and second transfer the subassembly that bends, first transfer the bend subassembly and the second transfer the bend subassembly respectively with pipe connection, and it can be all independently right the pipe is transferred and is bent, first transfer the bend subassembly right the accent bend direction of pipe with the second is transferred the bend subassembly right the accent bend direction of pipe is different.

The technical scheme has the advantages that: when the first bending adjusting assembly and the second bending adjusting assembly adjust the bending of the guide pipe, the bending adjusting direction of the first bending adjusting assembly to the guide pipe is different from the bending adjusting direction of the second bending adjusting assembly to the guide pipe, so that the bending range of the guide pipe is wider; meanwhile, the first bending adjusting assembly and the second bending adjusting assembly can respectively adjust the bending of the guide pipe, and an operator can adjust the bending direction of the guide pipe more flexibly.

In a possible solution, the bending direction of the conduit by the first bending adjusting assembly and the bending direction of the conduit by the second bending adjusting assembly are perpendicular to each other. It can be understood that the first bending component and the second bending component can bend the catheter in multiple directions, so that the catheter can be selectively operated.

In a possible solution, the bending direction of the first bending adjusting component to the conduit is a vertical direction, and the bending direction of the second bending adjusting component to the conduit is a horizontal direction. The bending device has the advantages that an operator can conveniently operate the first bending adjusting assembly and the second bending adjusting assembly, and the operator can easily control the bending direction of the catheter.

In one possible solution, the first bending adjustment assembly is a knob type bending adjustment assembly, and the second bending adjustment assembly is a trigger type bending adjustment assembly. The operation of the first bending adjusting assembly and the second bending adjusting assembly is convenient for an operator.

In a feasible scheme, the bending device further comprises a shell, the conduit is connected to one end of the shell, the first bending adjusting assembly comprises a bending adjusting knob arranged on the shell, the second bending adjusting assembly comprises a bending adjusting trigger arranged on the shell, the bending adjusting knob is close to the conduit, and the bending adjusting trigger is far away from the conduit. When an operator holds the shell, one hand of the operator operates the bending adjusting knob, and the other hand of the operator operates the bending adjusting trigger, so that the operator can conveniently operate the first bending adjusting assembly and the second bending adjusting assembly.

In one possible solution, the housing is "stock" shaped. It will be appreciated that the provision of a "butt stock" allows the operator to conveniently grip the housing when adjusting the first and second bend adjusting assemblies.

In one possible embodiment, a handle is provided at an end of the housing remote from the conduit. It can be understood that, by providing a handle, an operator can conveniently hold the housing while adjusting the first bend adjusting assembly and the second bend adjusting assembly.

In one possible embodiment, 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 adjusting assembly and the second bending adjusting assembly, when the shell is held by one hand of the operator, the bending adjusting knob can be operated, and when the shell is held by the other hand, the bending adjusting trigger can be operated, so that the operator can conveniently operate the bending adjusting knob and the bending adjusting trigger.

In a feasible scheme, the first bending adjusting assembly comprises an adjusting piece, a connecting unit and a drawn wire, one end of the drawn wire is connected with the guide pipe, the other end of the drawn wire is connected with the connecting unit, an adjusting groove is formed in the adjusting piece, one end of the adjusting groove is far away from a rotating center of the adjusting piece, the other end of the adjusting groove is close to the rotating center, one end, far away from the drawn wire, of the connecting unit moves in the adjusting groove, and the connecting unit is far away from/close to the rotating center under the action of the adjusting piece.

The technical scheme has the advantages that: the adjusting piece drives the wire drawing to move in the rotating process, and different acting forces are applied to the guide pipe by the wire drawing, so that the aim of bending the guide pipe is fulfilled. It can be understood that, the rotation of the adjusting part is converted into the bending motion of the guide pipe, so that the bending motion guide pipe is simple in structure, convenient to operate and wide in application prospect.

In a feasible scheme, the connecting unit comprises a connecting part and a sliding part, one end of the connecting part is connected with the wire drawing, the other end of the connecting part is connected with the sliding part, the sliding part slides in the adjusting groove, and the connecting unit is more conveniently connected with the wire drawing and the adjusting piece.

The sliding part slides in the adjusting groove to limit the movement of the drawn wires in multiple directions.

In a feasible scheme, the adjusting piece is provided with limiting and supporting parts, and the limiting and supporting parts are arranged at two ends of the adjusting groove and are used for supporting the connecting unit. The limiting support part can support the connecting part, and the sliding part on the connecting unit is prevented from being separated from the adjusting groove.

In one possible embodiment, the adjustment groove is arranged in an arc or in a straight line. When an operator rotates the adjusting piece at a constant speed, the speed of the drawn wire is stable when the drawn wire moves along the first direction.

In one possible embodiment, the adjusting element is provided with an actuating element for gripping. The effect that the operator can conveniently operate the adjusting piece is achieved.

In a possible solution, the adjusting member is arranged in a circle, and a rotating shaft is arranged in the center of the adjusting member. Rotate on the casing through the axis of rotation, play the effect of conveniently adjusting the regulating part.

In one possible solution, the second bend adjustment assembly comprises:

the fixing seat is provided with two limiting holes extending along the axial direction of the fixing seat, and the two limiting holes are correspondingly arranged on the two outer side walls of the fixing seat one by one;

the two driven pieces are correspondingly arranged in the limiting holes respectively, and a plurality of threading holes extending along the axial direction of the driven pieces are formed in the driven pieces in a penetrating manner;

the flexible unit comprises a plurality of flexible pieces corresponding to the threading holes, one end of each flexible piece is connected with the corresponding guide pipe, and the other end of each flexible piece penetrates through the corresponding threading hole and is fixed relative to the driven piece;

the rotating part is sleeved on the fixed seat and in threaded fit with the two driven parts, the rotating part rotates relative to the fixed seat, and the rotating part drives the driven parts to move in the limiting holes in the rotating process so as to drive the guide pipe to bend.

The technical scheme has the advantages that: the operator rotate and rotate the piece, rotate the piece and can rotate for the fixing base, rotate the piece and drive the follower and at spacing downthehole motion, when two followers carried on the back mutually or motion direction in opposite directions, the follower drives two directions of flexible unit pulling pipe crooked.

The flexible piece assembles through a plurality of through wires holes and becomes together, has improved the joint strength of flexible piece and follower, avoids the flexible piece to break away from the follower.

In one possible embodiment, the flexible members are extended in a contracted state relative to the end connected to the conduit. The flexible unit is formed by gathering the flexible parts together, so that the connection strength between the flexible unit and the driven part is enhanced more simply and firmly by connecting the flexible parts with the guide pipe, and the driven part is prevented from being separated from the driven part in the process of pulling the guide pipe by the flexible unit.

In one possible solution, the ends of the flexible members connected to the conduit converge at the same length as the flexible members. The flexible unit is formed by gathering the flexible parts together, so that the connection strength between the flexible unit and the driven part is enhanced more simply and firmly by connecting the flexible parts with the guide pipe, and the driven part is prevented from being separated from the driven part in the process of pulling the guide pipe by the flexible unit.

In a possible solution, the driven member is provided with a groove at one of the threading holes, and a mounting member is mounted in the groove and used for fixing the flexible member in the groove. Through the flexible member bolt on the installed part, make things convenient for the flexible member to fix on the follower, the installed part is fixed in the recess, can avoid installed part and follower to break away from mutually.

In one possible embodiment, a plurality of the threading holes are arranged at intervals in the circumferential direction. When the flexible piece passes through the threading hole, the ends, connected with the driven piece, of the flexible piece are arranged at intervals in the same circumferential direction, so that the stress of the flexible pieces is uniform.

In a feasible scheme, the limiting holes are formed in two sides of the fixing seat along the horizontal direction, and the two driven pieces are respectively arranged on two sides of the fixing seat along the horizontal direction. The driven piece moves in the horizontal direction in the limiting holes on the two sides of the fixing seat, so that the flexible unit pulls the guide pipe to move in the horizontal direction.

In one possible embodiment, the rotary part has an internal thread and the driven part has an external thread, the internal thread engaging with the external thread. The rotating part is in the rotating process, the internal thread on the rotating part is meshed with the external thread on the driven part, the driven part is driven by the rotating part, and the precision of the driven part in the limiting hole is higher.

In one possible embodiment, the internal thread includes a positive thread and a negative thread, the external thread of one of the followers is a positive thread, the external thread of the other one of the followers is a negative thread, the follower having a positive thread meshes with the rotating member having a positive thread, and the follower having a negative thread meshes with the rotating member having a negative thread. When the operator rotates the rotation piece, have the reverse thread the follower with have positive screw thread the follower is under the drive of rotating the piece, and the direction of motion is opposite or relative, and when a follower passed through flexible unit pulling pipe, pulling force between another follower release flexible unit and the pipe can make two followers mutually support to the pulling pipe carries out two directions and transfers the turn.

In one possible embodiment, the outer wall of the rotating part is provided with an anti-slip part. Through rotating the anti-skidding piece on the piece, the operator can conveniently grip and rotate the piece, and anti-skidding piece increase operator's hand and the frictional force that rotates between the piece prevent to skid between operator's hand and the rotation piece.

The utility model discloses still provide following technical scheme:

a puncture surgical instrument comprises a catheter system and a puncture needle, wherein the catheter system is adopted by the catheter system, the puncture needle is arranged in the catheter in a penetrating mode, and the catheter system can drive the puncture needle to bend.

The technical scheme has the advantages that: one end of the puncture needle is arranged in the shell, the other end of the puncture needle penetrates through and extends out of the catheter, the puncture needle can slide in the catheter in the puncture process, and when the catheter on the catheter system is bent, the puncture needle in the catheter can be bent under the driving of the catheter. An endoscope device comprises a catheter system and an endoscope, wherein the catheter system is adopted, the endoscope is arranged in a catheter in a penetrating mode, and the catheter system can drive the endoscope to bend.

The technical scheme has the advantages that: one end of the endoscope is arranged in the shell, the other end of the endoscope penetrates through and extends out of the guide pipe, and when the guide pipe on the guide pipe system is bent, the endoscope in the guide pipe can be bent under the driving of the guide pipe.

Drawings

The following drawings are only for the purpose of enabling those skilled in the art to better understand the technical solution of the present invention, and are not intended to limit the present invention, and other drawings can be obtained by those skilled in the art according to the technical solution of the present invention.

Fig. 1 is a schematic structural diagram of a catheter system according to an embodiment of the present invention;

fig. 2 is a partial schematic structural diagram of a catheter system according to an embodiment of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic diagram of a bend adjustment trigger structure in FIG. 3;

fig. 5 is a partial schematic structural view of a catheter system according to an embodiment of the present invention;

fig. 6 is a schematic partial structural view three of a catheter system according to an embodiment of the present invention;

FIG. 7 is an enlarged view of portion A of FIG. 6;

FIG. 8 is a schematic structural view of the fixing base and the driven member shown in FIG. 5;

fig. 9 is a structural schematic view of the bending adjustment knob in fig. 5.

Description of reference numerals:

100. a catheter system; 101. a housing; 102. puncturing needle; 10. a conduit; 11. a flexible section; 30. a first bend adjustment assembly; 31. adjusting a bending trigger; 311. an adjustment groove; 312. a limiting support part; 313. a rotating shaft; 32. drawing wires; 33. a connection unit; 331. a connecting portion; 332. a sliding part; 34. a limiting unit; 341. a limiting member; 342. a limiting groove; 35. an operating member; 40. a second bend adjustment assembly; 41. a fixed seat; 411. a through hole; 412. a limiting hole; 42. a driven member; 421. threading holes; 422. a groove; 423. an external thread; 43. a flexible unit; 431. a flexible member; 44. a bending adjusting knob; 441. an anti-slip member; 442. an internal thread.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

For a better description and illustration of embodiments of the application, reference may be made to one or more of the drawings, but additional details or examples for describing the drawings should not be construed as limiting the scope of any of the inventive concepts of the present application, the presently described embodiments, or the preferred versions.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, the present invention provides a catheter system 100, wherein 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) and inject a non-contractile substance such as a self-coagulating, biocompatible hydrogel into the left ventricular wall of the heart.

Specifically, the catheter system 100 includes a catheter 10, a first bending adjustment assembly 30 and a second bending adjustment assembly 40, where the first bending adjustment assembly 30 and the second bending adjustment assembly 40 are respectively connected to the catheter 10 and can independently perform bending adjustment on the catheter 10, and a bending adjustment direction of the first bending adjustment assembly 30 on the catheter 10 is different from a bending adjustment direction of the second bending adjustment assembly 40 on the catheter 10; therefore, when the first bending adjusting component 30 and the second bending adjusting component 40 bend the catheter 10, the bending range of the catheter 10 is wider, the bending of the catheter 10 is more flexible, and the puncture is more convenient.

Preferably, the bending direction of the first bending adjusting assembly 30 to the catheter 10 and the bending direction of the second bending adjusting assembly 40 to the catheter 10 are perpendicular to each other, that is, the catheter 10 can be bent in two perpendicular planes, so as to facilitate selective operation of the catheter 10 and increase the adjusting range of the catheter 10.

Further, the bending direction of the first bending adjusting component 30 to the catheter 10 is a vertical direction, and the bending direction of the second bending adjusting component 40 to the catheter 10 is a horizontal direction. It will be appreciated that bending the catheter 10 in the vertical and/or horizontal directions facilitates manipulation of the first and second bend adjustment assemblies 30, 40 by an operator, and facilitates control of the direction of bending of the catheter by the operator.

In the present embodiment, the first bending module 30 is a knob type bending module, and the second bending module 40 is a trigger type bending module. Of course, in other embodiments, the structures of the first bending adjustment assembly 30 and the second bending adjustment assembly 40 may be interchanged or the same.

Further, as shown in fig. 1, the catheter system 100 further includes a housing 101, and the first bending adjustment assembly 30 and the second bending adjustment assembly 40 are mounted on the housing 101.

In this embodiment, the housing 101 is "gunstock" shaped to facilitate the operator's grip of the housing 101 during operation. Of course, in other embodiments, the housing 101 may have other shapes as long as it can be easily held by an operator.

Preferably, the end of the casing 101 away from the guide tube 10 extends in the direction perpendicular to the casing axis, so that the end of the casing 101 away from the guide tube 10 is arranged in an arc shape and forms a shape similar to a "stock".

In one embodiment, a handle (not shown) is provided at an end of the housing 101 remote from the catheter 10. Specifically, the handle is arranged in an arc shape, and an operator grips the handle to grip the housing 10.

Further, as shown in fig. 1, the guide tube 10 is connected to one end of the housing 101. Preferably a conduit 10 is connected to the end of the housing 101 remote from the handle. The first bending adjustment assembly 30 is disposed near the catheter 10, and the second bending adjustment assembly 40 is disposed away from the catheter 10.

It will be appreciated that an operator can operate the first bend regulating assembly 30 with one hand and the second bend regulating assembly 40 with the other hand while holding the housing 101, so that the first bend regulating assembly 30 and the second bend regulating assembly 40 can be independently operated with both hands.

The embodiment also provides a puncture surgical device, which comprises a catheter system 100 and a puncture needle 102, wherein the puncture needle 102 is arranged in the catheter system 100 in a penetrating way and can be bent under the driving of the catheter system 100. In this embodiment, the catheter system 100 may be as described above with reference to the present embodiment, and thus, the description thereof is not repeated.

One end of the puncture needle 102 is arranged in the shell 101, the other end of the puncture needle is arranged through and extends out of the catheter 10, and the puncture needle 102 can slide in the catheter 10.

Specifically, the puncture needle 102 has a puncture end and a connection end that are opposite to each other. The connecting end of the puncture needle 102 is arranged in the shell 101, the puncture end of the puncture needle 102 is used for puncture, and the puncture end of the puncture needle 102 punctures to a preset target point and performs injection or suction, so that a foundation is provided for subsequent treatment. It should be noted that the piercing end of the piercing needle 102 refers to the end of the piercing needle 102 away from the operator, and the connecting end refers to the end of the piercing needle 102 close to the operator. Of course, the above-mentioned piercing end or connecting end is defined in this embodiment to more clearly illustrate the structure of the piercing needle 102 and the piercing principle.

The present embodiment further provides an endoscope apparatus, which includes a catheter system 100 and an endoscope (not shown), the endoscope apparatus is disposed in the catheter system 100, and the catheter system 100 may refer to the foregoing description of the present embodiment, and thus, the description thereof is not repeated.

Specifically, the endoscope is disposed within the catheter 10 and moves as the catheter 10 moves.

It will be appreciated that the above description illustrates the application of the catheter system 100 to an endoscopic device or a surgical instrument. Of course, in other embodiments, the catheter system 100 may be used in other scenarios, which are not exhaustive.

With continued reference to fig. 1, the conduit 10 is generally cylindrical. Of course, in other embodiments, the catheter 10 may have other shapes, such as an oval shape. The catheter 10 may 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 material includes, but is not limited to, polyurethane, polypropylene, polyethylene, polycarbonate, ABS resin, modified nylon, etc.

The catheter 10 has an axial direction and a radial direction, the axial direction of the catheter 10 is a first direction, and the radial direction of the catheter 10 is a second direction. Preferably, a through hole (not shown) is formed in the catheter 10 along the first direction, and when the catheter 10 reaches a predetermined target point, the puncture needle 102 moves along the through hole, so that the puncture needle 102 punctures the target point, and a body fluid is sucked through the puncture needle 102 or a drug or a biological material is injected or delivered through the puncture needle 102.

Further, as shown in fig. 1, a flexible section 11 is provided on the conduit 10, and the conduit 10 is bent by the flexible section 11. Preferably, the radius at which the flexible segment 11 can bend can be adjusted, i.e., the puncture path of the catheter 10 can be adjusted (the path of the catheter 10 can be adjusted arbitrarily), so that the catheter 10 has the advantages of stronger maneuverability, better bending resistance, stronger ability to bypass blood vessels, bones and nerve tissues, reduced risk of puncturing organs and more precise puncture to a target point.

As shown in fig. 1 and 2, the first bending adjustment assembly 30 includes a bending adjustment trigger 31 and a pull wire 32, one end of the pull wire 32 is connected to the guide tube 10, and the other end is connected to the bending adjustment trigger 31.

It will be appreciated that the bend adjustment trigger 31 is pivotally mounted within the housing 101, and that a portion of the bend adjustment trigger 31 extends through and outside the housing 101 for manipulation by an operator, with one end of the pull wire 32 being connected to the outer wall of the catheter 10 and the other end being connected to the bend adjustment trigger 31.

Specifically, an operator rotates the bending adjustment trigger 31 to rotate the bending adjustment trigger 31 on the housing 101, the bending adjustment trigger 31 can wind the drawn wire on the bending adjustment trigger 31 in the rotating process to drive the drawn wire 32 to move, and the drawn wire 32 applies different acting forces to the catheter 10 to bend the flexible section 11 of the catheter 10, so as to perform puncture.

Wherein the wire 32 is substantially cylindrical and the axis of the wire 32 is aligned with the axis of the catheter 10. Of course, in other embodiments, the wire 32 may have other shapes, such as an oval shape. The wire drawing 32 is made of medical polymer materials, and the structural strength of the wire drawing 32 is improved while the wire drawing 32 is flexible, so that the catheter 10 can be conveniently pulled to be bent and bent along with the bending of the catheter 10, and the change of the position/angle between the wire drawing 32 and the catheter 10 and the bending trigger 31 is adapted. The medical grade polymer material includes, but is not limited to, polyurethane, polypropylene, polyethylene, polycarbonate, ABS resin, modified nylon, etc.

The bend adjustment trigger 31 is generally circular in shape, although in other embodiments the bend adjustment trigger 31 may have other shapes, such as an oval shape. The bend adjusting trigger 31 may be made of metal or medical plastic material. The turning trigger 31 is characterized in that two sides of the turning trigger 31 are provided with rotating shafts 313, the rotating shafts 313 are arranged at the circle center positions of the turning trigger 31, the turning trigger 31 is arranged on the shell 101 through the rotating shafts 313 and can rotate on the shell 101 through the rotating shafts 313, and the rotating positions of the turning trigger 31 around the rotating shafts 313 are used as the rotating centers.

Further, as shown in fig. 3 and 4, a connection unit 33 is disposed between the wire drawing 32 and the bending adjusting trigger 31, an adjustment groove 311 is disposed on the bending adjusting trigger 31, one end of the adjustment groove 311 is far away from a rotation center of the bending adjusting trigger 31, the other end is close to the rotation center, and one end of the connection unit 33, far away from the wire drawing 32, moves in the adjustment groove 311 and is far away from/close to the rotation center under the action of the bending adjusting trigger 31.

It is understood that the wire 32 is bolted to the connection unit 33, and the wire 32 is placed in the adjustment groove 311 by the connection unit 33 and slides in the adjustment groove 311 by the connection unit 33. It can be understood that a connecting unit 33 is provided to facilitate the connection between the wire 32 and the bending trigger 31; thus, the operability of the first bend adjusting assembly 30 is enhanced when the bend adjusting trigger 31 drives the pull wire 32.

Specifically, when the bending adjustment trigger 31 rotates, the adjustment groove 311 formed in the bending adjustment trigger 31 rotates along with the rotation of the bending adjustment 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 in the first direction and away from/close to the rotation point of the bending trigger 31, so that the bending trigger 31 pulls the catheter 10 to bend.

Wherein both ends of the adjustment groove 311 are not collinear with the rotation center.

Preferably, the adjustment slot 311 is disposed in an arc shape or a straight line shape. It will be appreciated that the adjustment slot 311 is curved or linear to stabilize the speed of the pull wire 32 moving in the first direction when the operator rotates the bend adjustment trigger 31 at a constant speed.

Further, as shown in fig. 4, an operating member 35 for holding is disposed on the bending adjustment trigger 31, and the operating member 35 extends out of the housing 101.

It will be appreciated that an operating member 35 is provided on the set-up trigger 31, the operating member 35 being grasped by an operator for adjusting the rotation of the set-up trigger 31 on the housing 101.

Specifically, the operator pulls the operating member 35, and drives the bending adjusting trigger 31 through the operating member 35, so that the bending adjusting trigger 31 rotates on the housing 101, and the effect that the operator can conveniently operate the bending adjusting trigger 31 is achieved.

The operating member 35 is arc-shaped, so that the operating member 35 conforms to human engineering and is more convenient for an operator to hold.

Further, as shown in fig. 3, the connection unit 33 includes a connection portion 331 and a sliding portion 332, one end of the connection portion 331 is connected to the wire 32, the other end is connected to the sliding portion 332, and the sliding portion 332 slides in the adjustment groove 311.

It is understood that the sliding portion 332 is disposed in the adjustment groove 311 and can slide along the adjustment 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 does not move in the second direction along with the rotation of the bending trigger 31, and at this time, the sliding portion 332 moves along the radial direction of the bending trigger 31 along the adjusting groove 311, so that the connecting unit 33 moves in the first direction, and the wire 32 is bolted to the connecting portion 331.

The connecting portion 331 is integrally formed with the sliding portion 332 to facilitate the processing and manufacturing of the connecting unit 33.

Further, as shown in fig. 4, the bending adjusting trigger 31 is provided with a limit support part 312, and the limit support parts 312 are disposed at two ends of the adjusting slot 311 for supporting the connecting unit 33.

It can be understood that, when the connecting portion 331 of the connecting unit 33 moves to the two ends of the adjusting slot 311, the position-limiting supporting portion 312 supports the connecting portion 331 to prevent the sliding portion 332 of the connecting unit 33 from separating from the adjusting slot 311.

Wherein, the limit support part 312 is integrally provided with the bending trigger 31.

Further, as shown in fig. 3, the first bending adjustment assembly 30 further includes a limiting unit 34, and the limiting unit 34 is connected to the housing 101 for limiting the connecting unit 33.

It is understood that the limiting unit 34 can limit the moving direction of the connecting portion 331 to move the connecting unit 33 in the first direction; and, when the catheter 10 is reset, the connecting unit 33 is prevented from moving in the second direction.

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.

It is understood that the connecting portion 331 is disposed in the limiting groove 342, and the limiting groove 342 limits the connecting portion 331 to move along the first direction. In the present embodiment, the inner wall of the housing 101 is provided in an arc shape, the limiting member 341 is mounted on the inner wall of the housing 101, and a limiting groove 342 for the connecting portion 331 of the connecting unit 33 to slide is formed between the limiting member 341 and the housing 101.

As shown in fig. 5 and 6, the second bending adjustment assembly 40 includes a fixing base 41, two driven members 42, two bending adjustment knobs 44, and a flexible unit 43, wherein the fixing base 41 is provided with two limiting holes 412 extending along an axial direction of the fixing base, the number of the driven members 42 is two, the two driven members 42 are respectively and correspondingly installed in the limiting holes 412, one end of the flexible unit 43 is connected with the guide tube 10, the other end of the flexible unit is connected with the driven members 42, the bending adjustment knobs 44 are sleeved on the fixing base 41 and are matched with the two driven members 42, the bending adjustment knobs 44 rotate relative to the fixing base 41, and the bending adjustment knobs 44 drive the driven members 42 to move in the limiting holes 412 in a rotating process so as to drive the guide tube 10 to bend.

Specifically, an operator rotates the bending adjustment knob 44, the bending adjustment knob 44 can rotate relative to the fixing base 41, the bending adjustment knob 44 drives the driven members 42 to move in the limiting hole 412, the two driven members 42 move in opposite directions, and the driven members 42 drive the flexible unit 43, so that the flexible unit 43 drives the puncture end of the catheter 10 to bend, and the purpose of bending the flexible section 11 of the catheter 10 integrally is achieved.

Wherein, the rotation axis of the bending adjusting knob 44 is perpendicular to the rotation axis of the bending adjusting trigger 31. The operator is facilitated to operate the sweep knob 44 and the sweep trigger 31.

Further, as shown in fig. 6 and 7, the flexible unit 43 includes a plurality of flexible members 431, one end of each of the flexible members 431 is connected to the guide tube 10, and the other end of each of the flexible members 431 is fixed to the follower 42.

It can be understood that the plurality of flexible members 431 are provided, so that the connection strength between the flexible members 431 and the driven member 42 is improved, and the phenomenon that the flexible members 431 are pulled off when the flexible members 431 are connected with the driven member 42 is avoided.

Further, the ends of the flexible members 431 connected to the conduit 10 are contracted and extended relatively, so that the connection between the flexible members 431 and the conduit 10 is simpler and firmer.

Preferably, the ends of the flexible members 431 connected to the conduit 10 converge at the same length position of the flexible members, so that the connection between the flexible members 431 and the conduit 10 is further simple and firm.

Further, as shown in fig. 6 and 7, the driven member 42 is formed with a plurality of threading holes 421 extending along an axial direction thereof, one end of the flexible member 431 is connected to the guide tube 10, and the other end thereof is inserted into the corresponding threading hole 421 and fixed to the driven member 42.

The follower 42 may be made of metal or medical plastic material, the follower 42 is substantially square, the follower 42 is installed in the limiting hole 412, one end of the follower 42 extends out of the limiting hole 412, and the follower 42 can slide along the limiting hole 412.

It can be understood that the flexible member 431 is gathered together through the plurality of threading holes 421, so that the connection strength of the flexible member 431 and the driven member 42 is improved, and the flexible member 431 is prevented from being separated from the driven member 42.

In the present embodiment, as shown in fig. 7, the threading hole 421 has a circular cross-sectional shape. Of course, in other embodiments, the cross-sectional shape of the threading hole 421 is an ellipse or a polygon.

The threading holes 421 are arranged at intervals along the circumferential direction, so that the flexible members 431 are uniformly stressed.

Preferably, the number of the flexible members 431 is 3, the driven member 42 is provided with 3 threading holes 421, one ends of the 3 flexible members 431 are gathered together and connected with the guide tube 10, and the other ends of the 3 flexible members 431 respectively penetrate out of the 3 threading holes 421 and are gathered and fixed on the driven member 42.

Further, as shown in fig. 7, the driven member 42 is provided with a groove 422 at one of the threading holes 421, and a mounting member (not shown) is installed in the groove 422, and is used for fixing the flexible member to the groove 422.

It will be appreciated that the mounting member is fixedly mounted in the recess 422, the recess 422 serving to facilitate mounting of the mounting member, bolting the flexible member 431 to the mounting member, and preventing the flexible member 431 from separating from the follower member 42. Wherein, the length of the shortest side of installed part is greater than the length of the diameter of threading hole 421, avoids the installed part to pass through the threading hole.

Preferably, the mounting member has a profile that matches the profile of the inner wall of the recess 422. When the flexible member 431 pulls the catheter 10, the mounting member is acted by the flexible member 431, so that the mounting member is prevented from shaking in the groove 422, and the bending precision of the catheter 10 is reduced.

Further, a fixing unit (not shown) is provided between the mounting member and the driven member 42, and detachably fixes the mounting member to the driven member 42.

Wherein, the fixed unit is any one of a buckling structure, a magnetic structure or a bolt structure.

Preferably, the fixing unit may be a magnetic structure, the magnetic structure includes a magnetic block (not shown) and a matching block (not shown), the magnetic block is disposed on the driven member 42, the matching block is disposed on the mounting member, when the mounting member is mounted on the driven member 42, the magnetic block is magnetically connected to the matching block, and the mounting member is fixed on the driven member 42 through mutual attraction between the magnetic block and the matching block. Wherein the mating block is ferromagnetic.

Of course, in another embodiment, the magnetic block is provided on the mounting member and the mating block is provided on the follower 42, the magnetic block being magnetically coupled to the mating block.

Further, as shown in fig. 6 and 7, an internal thread 442 is provided in the bending adjustment knob 44, and the follower 42 is provided with an external thread 423, and the internal thread 442 is engaged with the external thread 423.

It can be understood that, when the operator rotates the bending adjustment knob 44, the bending adjustment knob 44 turns the bending adjustment knob 44 to rotate relative to the fixing base 41 in a manner of threaded connection so that the driven member 42 moves along the limiting hole 412. Meanwhile, the bending adjusting knob 44 is in threaded connection with the driven member 42, so that a self-locking phenomenon can be realized, and the driven member 42 is prevented from moving along the limiting hole 412 after being stressed (except for the acting force of the bending adjusting knob 44).

Further, as shown in fig. 6 and 7, the internal thread 442 includes a positive thread and a negative thread, the external thread 423 of one of the followers 42 is the positive thread, the external thread 423 of the other one is the negative thread, the follower 42 having the positive thread is engaged with the turning knob 44 having the positive thread, and the follower 42 having the negative thread is engaged with the turning knob 44 having the negative thread.

It can be understood that the positive thread and the negative thread of the internal thread 442 are arranged along the axial direction of the bending adjustment knob 44, and when an operator rotates the bending adjustment knob 44 clockwise or counterclockwise, the two driven members 42 move in opposite directions, the driven members 42 pull the flexible units 43 respectively connected to the driven members 42, and the two flexible units 43 are correspondingly tightened or loosened, so as to achieve the bending of the catheter 10.

Further, as shown in fig. 8, a through hole 411 for the puncture needle 102 to pass through is formed in the fixing base 41, and the through hole 411 can support the puncture needle 102.

It is understood that the holder 41 may be made of stainless steel or medical grade 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 formed in the fixed seat 41, and the puncture needle 102 penetrates through the through hole 411 to be connected with an external pumping/injecting device. The limiting hole 412 is opened on the fixing seat 41 along the axial direction.

Further, as shown in fig. 8, the two limiting holes 412 are correspondingly formed on the two outer sidewalls of the fixing base 41.

Preferably, the limiting hole 412 is opened to two sides of the fixing seat 41 along the horizontal direction, and the two driven members 42 are respectively disposed on two sides of the fixing seat 41 along the horizontal direction.

Further, as shown in fig. 9, the bending adjustment knob 44 is substantially cylindrical, and the bending adjustment knob 44 may be made of metal or medical plastic. The bending adjustment knob 44 is rotatably connected to the housing 101.

Preferably, the outer wall of the bending adjustment knob 44 is provided with a skid-proof member 441. The operator can conveniently hold the bending adjusting knob 44, and the anti-slip piece 441 increases the friction force between the hand of the operator and the bending adjusting knob 44 to prevent the hand of the operator from slipping with the bending adjusting knob 44.

In the present embodiment, the anti-slip members 441 are anti-slip threads. Of course, in other embodiments, the anti-slip member 441 may be an anti-slip protrusion or a rubber sheet, etc., as long as the structure can play a role of anti-slip.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A catheter system, characterized by: bend the subassembly including pipe, first accent bend subassembly and second, first accent bend the subassembly and the second accent bend the subassembly respectively with pipe connection, and all can be independently right the pipe is transferred and is bent, first accent bend the subassembly is right the accent bend direction of pipe with the second is transferred and is bent the subassembly is right the accent bend direction of pipe is different.

2. The catheter system of claim 1, wherein: the bending direction of the guide pipe by the first bending adjusting assembly is perpendicular to the bending direction of the guide pipe by the second bending adjusting assembly.

3. The catheter system of claim 1 or 2, wherein: the bending direction of the first bending adjusting assembly to the guide pipe is a vertical direction, and the bending direction of the second bending adjusting assembly to the guide pipe is a horizontal direction.

4. The catheter system of claim 1, wherein: the first bending adjusting assembly is a knob type bending adjusting assembly, and the second bending adjusting assembly is a trigger type bending adjusting assembly.

5. The catheter system of claim 4, wherein: still include the casing, pipe connection in casing one end, first accent curved subassembly including set up in the accent curved knob of casing, the second has been transferred the subassembly including set up in the accent curved trigger of casing, it is close to transfer curved knob the pipe setting, it keeps away from to transfer curved trigger the pipe setting.

6. The catheter system of claim 5, wherein: the shell is in a gun stock shape.

7. The catheter system of claim 5, wherein: and a handle is arranged at one end of the shell, which is far away from the guide pipe.

8. The catheter system of claim 5, wherein: and the rotating shaft of the bending adjusting knob is vertical to the rotating shaft of the bending adjusting trigger.

9. A puncture surgical instrument comprising a catheter system using the catheter system according to any one of claims 1 to 8, and a puncture needle inserted into a catheter, the catheter system being capable of bending the puncture needle.

10. An endoscopic apparatus comprising a catheter system using the catheter system according to any one of claims 1 to 8, and an endoscope inserted into the catheter system, the catheter system being capable of bending the endoscope.

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