CN115474888B

CN115474888B - Blood vessel intracavity operation catheter with visual function

Info

Publication number: CN115474888B
Application number: CN202210960880.1A
Authority: CN
Inventors: 王咏; 徐博; 李畑波; 刘宸铖; 彭晓波
Original assignee: Second Affiliated Hospital Army Medical University
Current assignee: Second Affiliated Hospital Army Medical University
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2023-04-18
Anticipated expiration: 2042-08-11
Also published as: CN115474888A

Abstract

The invention discloses a vascular intracavity operating catheter with a visual function, which belongs to the technical field of medical instruments, and is provided with an imaging lens to assist a doctor to observe a vascular shape structure, first traction wires are arranged on four sides of an operating tube, the bending tube is stressed and bent on the side by stretching the first traction wires, the bent operating tube can extend into a corresponding vascular branch in the process of continuous conveying, the catheter is simple and convenient to operate, the bending of the bending tube in any direction can be achieved by sliding each traction block, the operating burden of the doctor is reduced, multiple tentative contact of the catheter on a blood vessel is avoided, the operation efficiency of the doctor is improved, and more time is won on an operating table which wins for seconds.

Description

Blood vessel intracavity operation catheter with visual function

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a visible intravascular operating catheter.

Background

The vascular diseases have great threat to human life, and the vascular diseases bring great influence to the life and the life of people; the treatment of the vascular diseases is pharmacological treatment, and the serious vascular diseases need to be treated by directly reaching the inside of the blood vessel by using very precise equipment and precise medical appliances; the common apparatus for treating pathological blood vessel is to operate a catheter, to make the catheter travel along the blood vessel to finally reach the treatment position, and the endoscope technology of the blood vessel has less harm to human body and accurate treatment. The existing operating catheter in the vascular cavity has a simple structure, if a bifurcated blood vessel is encountered, the advancing of the catheter becomes very difficult, the requirement of a doctor on the accurate position of the catheter in the bifurcated blood vessel is high, and the contact of the catheter to the blood vessel is inevitable during the trial catheter advancing, which also influences the recovery of a patient.

Disclosure of Invention

In view of the above, the present invention aims to provide a visible endovascular procedure catheter which can assist a physician in observing a blood vessel, control the bending of the catheter, and reduce the operational burden of the physician and the recovery burden of a patient.

In order to achieve the purpose, the invention provides the following technical scheme:

the optical fiber type optical fiber operating device comprises an operating handle and a soft operating tube, wherein the operating tube is hollow, optical fibers are arranged in the operating tube and distributed along the operating tube, and an imaging lens is arranged at the head end of the operating tube and is in contact connection with the optical fibers; the imaging lens is positioned at one end of the bent tube, and four bending parts are uniformly arranged around the bent tube;

the bending part comprises a first traction wire, a plurality of alignment grooves arranged in an array along the extension direction of the bending pipe and sinking strip grooves communicated between the alignment grooves, the alignment grooves are composed of two sinking grooves formed in the side surface of the bending pipe, the two sinking grooves are separated, alignment through holes are formed in the separation positions, the sinking strip grooves are formed inwards from the side surface of the bending pipe, one end of the first traction wire is fixedly connected into the end part of the bending pipe, and the first traction wire sequentially penetrates through the alignment through holes along the sinking strip grooves, then penetrates through the extension pipe and extends out of the end part of the extension pipe;

the operating handle is fixed at the end part of the extension pipe, four traction blocks are arranged on the operating handle in a sliding mode, and the traction blocks are fixedly connected with the first traction wire respectively.

Further, the inside cavity of handle, the handle middle section is equipped with separates the break block, the traction block includes spring, stock and slider, the stock pass separate the break block and with first traction wire rigid coupling, the slider is fixed the stock other end, the slider slides and sets up the handle side, the slider is followed the handle side is stretched out, the spring support the slider with separate between the break block.

Furthermore, the imaging lens comprises a rotary seat and a lens head, the lens head is fixed in the rotary seat and penetrates out of two ends of the rotary seat, one end of the lens head, which is in contact with the optical fiber, is a transmission end, the other end of the lens head is an imaging end, a swivel is arranged on the outer side of the rotary seat, a first annular groove is arranged on the inner side of the end part of the bent pipe, the swivel is coaxially and rotatably arranged in the first annular groove, a second annular groove is further formed in the first annular groove, a bulge is fixedly arranged on the outer side of the swivel, a line hole is formed in the side, facing the direction of the extension pipe, of the second annular groove, and the line hole is sequentially formed along the bent pipe and the extension pipe and is opened to the side surface of the end part of the extension pipe; second traction wires are fixedly connected to two sides of the protrusion respectively, and the two second traction wires are distributed along two directions of the second ring groove and penetrate into the wire holes;

the rotary block comprises a rotary shaft, a rotary handle and a rotary disc, the rotary handle is arranged on one side face of the operating handle in a rotating mode, the rotary disc is coaxially fixed at the end portion of the rotary shaft and located on the inner side of the operating handle, the rotary handle is coaxially fixed at the end portion of the rotary shaft and located on the outer side of the operating handle, the second traction wires are fixed on the side face of the rotary disc respectively, the second traction wires are symmetrical relative to the axis of the rotary disc, and the rotary disc is rotated to enable the two second traction wires to slide in the opposite direction.

Furthermore, a torsion spring is fixedly arranged on the rotating shaft and is positioned inside the side face of the operating handle.

Furthermore, protruding plates are fixedly arranged on two sides of the rotary table, the second traction wire is fixed to the protruding plates, a limiting plate is further fixed to the inner side of the operating handle and located beside the rotary table and used for avoiding the rotary table from rotating at an excessive angle.

Furthermore, the inner side of the operating handle is fixedly provided with a positioning head which is positioned beside the rotating block, and the two second traction wires respectively penetrate through the positioning head and are connected to the rotating disc.

The invention has the beneficial effects that:

1. according to the invention, at the blood vessel branch position, a doctor determines the branch condition in the blood vessel and the position of the branch opening of the blood vessel by observing the three-dimensional image converted by the imaging lens, at the moment, the bending of the bent tube can be accurately controlled, the first traction wire connected with the traction block is moved towards the direction of the operating handle along the extension tube by pulling the traction block, the length of the first traction wire positioned on the bent tube is shortened, the soft bent tube is subjected to the straightening action force of the first traction wire at the side and is bent, at the moment, the operating tube is continuously conveyed into the blood vessel, and the end head of the bent tube can be extended to the corresponding branch opening of the blood vessel.

2. Rotate the handle through rotating, rotate with driving the carousel, the clockwise and anticlockwise rotation of carousel can control the back-and-forth movement of two second traction wires respectively, pull the bellied tractive in the swivel becket outside with the control second, rotate the handle through rotating promptly, make the swivel mount rotate at crooked pipe tip, this structure can accurate control imaging lens's turned angle, supplementary imaging lens is to the scanning of blood vessel inside, and supplementary doctor is to the observation that the blood vessel is branched.

Additional advantages, objects, and features of the invention will be set forth in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:

FIG. 1 is a general schematic view of a catheter embodying the present invention;

FIG. 2 is a detailed view of a bending portion according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an imaging lens of an embodiment of the invention at a curved tube;

FIG. 4 is a cross-sectional view of an operating handle according to an embodiment of the present invention;

FIG. 5 is a top view of the turntable on the lever according to an embodiment of the present invention;

FIG. 6 is an inside view of a bent tube at a first ring groove location according to an embodiment of the present invention;

the drawings are numbered as follows: 1. an operating handle; 11. a traction block; 111. a spring; 112. a long rod; 113. a slider; 12. a blocking block; 13. rotating the block; 131. a rotating shaft; 132. turning a handle; 133. a turntable; 134. a torsion spring; 135. a protruding plate; 14. positioning the head; 15. a limiting plate; 2. operating the tube; 21. bending the tube; 211. a first ring groove; 212. a second ring groove; 2121. a wire hole; 22. an extension pipe; 23. a bending section; 231. a first pull wire; 232. a wiring fixing groove; 233. a sinking bar groove; 234. routing through holes; 3. an optical fiber; 4. an imaging lens; 41. rotating; 42. a lens head; 43. rotating the ring; 431. a protrusion; 44. a second pull wire.

Detailed Description

As shown in fig. 1 to 6, the present invention provides a blood vessel intracavity operating catheter with a visual function, which comprises an operating handle 1 and a soft operating tube 2, wherein the operating tube 2 is hollow, an optical fiber 3 is arranged in the operating tube 2, the optical fiber 3 is distributed along the operating tube 2, as shown in fig. 1 and 3, an imaging lens 4 is arranged at the head end of the operating tube 2, and the imaging lens 4 is connected to the optical fiber 3 in a contact manner; the operating tube 2 comprises a bending tube 21 and an extending tube 22, the length of the extending tube 22 is longer than that of the bending tube 21, the extending tube 22 is omitted in the figure, the imaging lens 4 is positioned at one end of the bending tube 21, and four bending parts 23 are uniformly arranged around the bending tube 21; controlling the bending of the bending tube 21 by the bending portion 23, referring to fig. 1, 2 and 3, the bending portion 23 includes a first drawing wire 231, a plurality of fixing wire grooves 232 arranged in an array along the extending direction of the bending tube 21, and a sinking strip groove 233 communicated between the fixing wire grooves 232, where the fixing wire groove 232 is composed of two sinking grooves formed in the side surface of the bending tube 21, the two sinking grooves are separated from each other, a fixing wire through hole 234 is formed at the separation position, the sinking strip groove 233 is formed inward from the side surface of the bending tube 21, one end of the first drawing wire 231 is fixedly connected in the end portion of the bending tube 21, and the first drawing wire 231 sequentially passes through the plurality of fixing wire through holes 234 along the sinking strip groove 233, then passes through the extending tube 22, and extends out from the end portion of the extending tube 22; the operating handle 1 is fixed at the end part of the extension pipe 22, four traction blocks 11 are arranged on the operating handle 1 in a sliding mode, the traction blocks 11 are fixedly connected with the first traction wire 231 respectively, as shown in fig. 4, the operating handle 1 is hollow inside, a partition block 12 is arranged at the middle section of the operating handle 1, each traction block 11 comprises a spring 111, a long rod 112 and a sliding block 113, the long rod 112 penetrates through the partition block 12 and is fixedly connected with the first traction wire 231, the sliding block 113 is fixed at the other end of the long rod 112, the sliding block 113 is arranged on the side surface of the operating handle 1 in a sliding mode, the sliding block 113 extends out of the side surface of the operating handle 1, and the spring 111 abuts between the sliding block 113 and the partition block 12.

In the operation catheter, the diameter of the operation tube 2 is smaller than that of a blood vessel, and the diameter of the operation handle 1 is set to be 10-15cm, so that a doctor can conveniently hold the operation catheter; a doctor holds the operating handle 1 by hand, sends an operating tube 2 into a blood vessel, transmits an optical image to an imaging engine through an optical fiber 3 through an imaging lens 4, and converts the optical image into a three-dimensional image through the imaging engine, so that the doctor can observe and diagnose conveniently.

At the blood vessel branch position, a doctor determines the branch condition in the blood vessel and the position of the branch opening of the blood vessel by observing the three-dimensional image converted by the imaging lens 4, at the moment, the bending of the bent tube 21 can be accurately controlled, the first traction wire 231 connected with the traction block 11 is moved towards the operation handle 1 along the extension tube by pulling the traction block 11, the length of the first traction wire 231 positioned on the bent tube 21 is shortened, the soft bent tube 21 is subjected to the straightening action force of the first traction wire 231 at the side and is bent, at the moment, the operation tube 2 is continuously conveyed into the blood vessel, namely, the end of the bent tube 21 can be extended to the corresponding blood vessel branch opening, the catheter is simple and convenient to operate, the burden of any direction of the bent tube 21 can be achieved by sliding each traction block 11, the operation of the doctor is reduced, the multiple tentative contact of the catheter to the blood vessel is avoided, the operation efficiency of the doctor is improved, and more time is won for the division of the operation table.

In a further scheme, as shown in fig. 3, the imaging lens 4 includes a rotary seat 41 and a lens head 42, the lens head 42 is fixed in the rotary seat 41 and penetrates out of two ends of the rotary seat 41, one end of the lens head 42 contacting the optical fiber 3 is a transmission end, the other end is an imaging end, the imaging end is a prism with an oblique cut surface, and under the rotation of the lens head 42, the prism can collect blood vessel data in different directions to complete the three-dimensional rendering of the imaging engine; referring to fig. 3 and 6, a rotating ring 43 is arranged outside the rotating base 41, a first annular groove 211 is arranged inside the end portion of the bent pipe 21, the rotating ring 43 is coaxially and rotatably arranged in the first annular groove 211, a second annular groove 212 is further formed in the first annular groove 211, a protrusion 431 is fixedly arranged outside the rotating ring 43, a line hole 2121 is formed in the side surface of the second annular groove 212 facing the direction of the extending pipe 22, and the line hole 2121 is sequentially formed along the bent pipe 21 and the extending pipe 22 and opened to the side surface of the end portion of the extending pipe 22; second traction wires 44 are fixedly connected to two sides of the protrusion 431, and the two second traction wires 44 are distributed along two directions of the second ring groove 212 and penetrate into the wire holes 2121;

the multifunctional electric wrench is characterized by further comprising a rotating block 13, referring to fig. 4 and 5, the rotating block 13 comprises a rotating shaft 131, a rotating handle 132 and a rotating disc 133, the rotating handle 132 is rotatably arranged on one side face of the operating handle 1, the rotating disc 133 is coaxially fixed at the end of the rotating shaft 131 and located on the inner side of the operating handle 1, the rotating handle 132 is coaxially fixed at the end of the rotating shaft 131 and located on the outer side of the operating handle 1, the two second traction wires 44 are respectively fixed on the side faces of the rotating disc 133, the second traction wires 44 are symmetrical relative to the axis of the rotating disc 133, and the rotating disc 133 is rotated to enable the two second traction wires 44 to slide in opposite directions.

In this structure, through rotating handle 132, in order to drive carousel 133 and rotate, carousel 133 clockwise and anticlockwise rotation can control the back-and-forth movement of two second traction wires 44 respectively, in order to control second traction wire 44 to the protruding 431's in swivel 43 outside tractive, through rotating handle 132 promptly, make swivel mount 41 rotate at crooked pipe 21 tip, the turned angle of this structure ability accurate control imaging lens 4, supplementary imaging lens 4 is to the scanning of blood vessel inside, and supplementary doctor is to the observation of blood vessel branch.

In a further scheme, a torsion spring 134 is fixedly arranged on the rotating shaft 131, the torsion spring 134 is located inside the side face of the operating handle 1, after the torsion spring 134 is arranged, the imaging lens 4 can rotate under the rotation of a stress, and under the condition that the rotating disc 133 is not stressed to rotate, the imaging lens 4 returns to a fixed position under the rotation of the torsion spring 134, so that the structure avoids the phenomenon that the imaging lens 4 rotates randomly in the advancing process of the operating tube 2, and accurate imaging cannot be achieved.

In a further scheme, as shown in fig. 4 and 5, protruding plates 135 are fixedly arranged on two sides of the turntable 133, the second traction wire 44 is fixed on the protruding plates 135, a limiting plate 15 is further fixed on the inner side of the operating handle 1, and the limiting plate 15 is located beside the turntable 133 and is used for preventing the turntable 133 from rotating at an excessive angle and preventing the second traction wire 44 from being wound on the turntable 133.

In a further scheme, as shown in fig. 4 and 5, a positioning head 14 is further fixedly arranged on the inner side of the operating handle 1, the positioning head 14 is located beside the rotating block 13, the two second traction wires 44 respectively penetrate through the positioning head 14 and are connected to the rotating disc 133, and the positioning head 14 is used for controlling the positions of the second traction wires 44 and defining the moving track of the second traction wires 44.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, while the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. An endovascular procedure catheter with visualization capabilities, characterized in that: the optical fiber type optical fiber detection device comprises an operating handle (1) and a soft operating tube (2), wherein the operating tube (2) is hollow, optical fibers (3) are arranged in the operating tube (2), the optical fibers (3) are distributed along the operating tube (2), an imaging lens (4) is arranged at the head end of the operating tube (2), and the imaging lens (4) is in contact connection with the optical fibers (3); the operating tube (2) comprises a bent tube (21) and an extension tube (22), the imaging lens (4) is positioned at one end of the bent tube (21), and four bending parts (23) are uniformly arranged around the bent tube (21);

the bending part (23) comprises a first traction wire (231), a plurality of fixing line grooves (232) arranged in an array mode along the extending direction of the bent pipe (21) and sinking line grooves (233) communicated between the fixing line grooves (232), the fixing line grooves (232) are formed by two sinking grooves formed in the side face of the bent pipe (21), a fixing line through hole (234) is formed in the partition position of each sinking groove, the sinking line grooves (233) are formed inwards from the side face of the bent pipe (21), one end of the first traction wire (231) is fixedly connected into the end portion of the bent pipe (21), and the first traction wire (231) sequentially penetrates through the plurality of fixing line through holes (234) along the sinking line grooves (233), then penetrates through the extending pipe (22) and extends out of the end portion of the extending pipe (22);

the operating handle (1) is fixed at the end part of the extension pipe (22), four traction blocks (11) are arranged on the operating handle (1) in a sliding manner, and the traction blocks (11) are fixedly connected with the first traction wires (231) respectively;

the operating handle (1) is hollow, a partition block (12) is arranged in the middle section of the operating handle (1), the traction block (11) comprises a spring (111), a long rod (112) and a sliding block (113), the long rod (112) penetrates through the partition block (12) and is fixedly connected with the first traction wire (231), the sliding block (113) is fixed to the other end of the long rod (112), the sliding block (113) is arranged on the side face of the operating handle (1) in a sliding mode, the sliding block (113) extends out of the side face of the operating handle (1), and the spring (111) abuts between the sliding block (113) and the partition block (12);

imaging lens (4) include swivel mount (41) and lens head (42), and lens head (42) are fixed in swivel mount (41), and follow swivel mount (41) both ends are worn out, lens head (42) contact the one end of optic fibre (3) is the transmission end, and the other end is the formation of image end, swivel mount (41) outside has a swivel joint (43), crooked pipe (21) tip inboard is equipped with first annular (211), swivel joint (43) coaxial rotation is located in first annular (211), still set up second annular (212) on first annular (211), swivel joint (43) outside has set firmly a arch (431), line hole (2121) is seted up towards the side of extension pipe (22) direction in second annular (212), line hole (2121) follows in proper order crooked pipe (21), extension pipe (22) are seted up, and open to extension pipe (22) tip side; second traction wires (44) are fixedly connected to two sides of the protrusion (431) respectively, and the two second traction wires (44) are distributed along two directions of the second ring groove (212) and penetrate into the wire holes (2121);

the intravascular operation catheter further comprises a rotating block (13), wherein the rotating block (13) comprises a rotating shaft (131), a rotating handle (132) and a rotating disc (133), the rotating handle (132) is arranged on one side surface of the operating handle (1) in a rotating mode, the rotating disc (133) is coaxially fixed at the end part of the rotating shaft (131) and positioned on the inner side of the operating handle (1), the rotating handle (132) is coaxially fixed at the end part of the rotating shaft (131) and positioned on the outer side of the operating handle (1), the second traction wires (44) are respectively fixed on the side surfaces of the rotating disc (133), the second traction wires (44) are symmetrical relative to the axis of the rotating disc (133), and the rotating disc (133) is rotated to enable the two second traction wires (44) to slide along opposite directions.

2. A visually functioning endovascular procedure catheter according to claim 1, wherein: the rotating shaft (131) is fixedly provided with a torsion spring (134), and the torsion spring (134) is located inside the side face of the operating handle (1).

3. A visually functioning endovascular procedure catheter according to claim 1, wherein: protruding plates (135) are fixedly arranged on two sides of the rotary table (133), the second traction wire (44) is fixed to the protruding plates (135), a limiting plate (15) is further fixed to the inner side of the operating handle (1), and the limiting plate (15) is located beside the rotary table (133) and used for avoiding the rotation of the rotary table (133) in an over-angle mode.

4. A visually functioning endovascular procedure catheter according to claim 1, wherein: the inner side of the operating handle (1) is fixedly provided with a positioning head (14), the positioning head (14) is positioned beside the rotating block (13), and the two second traction wires (44) respectively penetrate through the positioning head (14) and are connected to the rotating disc (133).