CN114534067A - Controllable guiding directional catheter - Google Patents

Abstract

The invention provides a controllable guiding and orienting catheter, which relates to the technical field of medical appliances and comprises: a conduit; the far end of the catheter is an electrode head; the proximal end of the catheter is provided with a rotary fine tuning sleeve; the outer end of the rotary fine tuning sleeve is rotatably connected with the adjusting box; a handle is vertically and fixedly arranged in the middle of the outer end of the adjusting box; the middle part of the adjusting box is vertically provided with a rotating mechanism; the inner end of the upper end face of the adjusting box is provided with a damping frame; the catheter is internally provided with a stainless steel pull wire. The electrode head of the invention is composed of at least 10 platinum-iridium alloys, the 10 platinum-iridium alloys adopt a hardness gradient design from the electrode head end to the catheter body end, the safety is considered, the remote controllability is improved, the intracavitary electrocardiosignal can be clearly recorded, and the problems that the amplitude of the rotary catheter part is not easy to control and the tip part of the catheter is easy to damage internal organs are solved.

Description

Controllable guiding directional catheter

Technical Field

The invention relates to the technical field of medical instruments, in particular to a controllable guiding and orienting catheter.

Background

Interventional therapy is minimally invasive therapy carried out by modern high-tech means, and special precise medical instruments such as catheters, guide wires and the like are introduced into a human body under the guidance of medical imaging equipment and are used for establishing a passage, conveying the instruments or medicines and the like.

In the design and manufacture of the existing catheter, the far end of the catheter is mostly molded into different curved shapes to meet different anatomical structures of blood vessels, or a handle part is rotated, so that the tip of the catheter is curved, the amplitude of the rotating catheter part is not easy to control, and the tip part of the catheter is easy to damage internal organs.

Disclosure of Invention

In view of the above, the present invention provides a steerable guide catheter with a rotation mechanism and a damping frame to achieve precise bend control adjustment.

The invention provides a controllable guiding and orienting catheter, which specifically comprises: a conduit; the distal end of the catheter is an electrode tip; the proximal end of the catheter is provided with a rotary fine tuning sleeve; the outer end of the rotary fine tuning sleeve is rotatably connected with the adjusting box; a handle is vertically and fixedly arranged in the middle of the outer end of the adjusting box; the middle part of the adjusting box is vertically provided with a rotating mechanism; the inner end of the upper end face of the adjusting box is provided with a damping frame; the catheter is internally provided with a stainless steel pull wire.

Optionally, the proximal end of the catheter is a rigid tube and the distal end of the catheter is a flexible tube.

Optionally, a circular rotating chuck is fixedly arranged at the rear end of the rotating fine tuning sleeve, and the rotating chuck is rotatably clamped on the adjusting box.

Optionally, the electrode tip is composed of at least one platinum-iridium alloy, and the platinum-iridium alloy is designed to have a hardness gradient from the electrode tip to the catheter body.

Optionally, the left end and the right end of the adjusting box are respectively fixedly provided with a concave balancing stand.

Optionally, the rotating mechanism comprises a rotating gear, a rotating shaft and a drawing wheel, and the rotating shaft is vertically and rotatably mounted on the adjusting box; a traction wheel is fixedly arranged on the part of the rotating shaft positioned in the adjusting box, and the inner end of the stainless steel pull wire is wound on the traction wheel; the part of the rotating shaft above the adjusting box is fixedly provided with a rotating gear, the wall of the rotating gear is provided with a tooth socket, and the edge of the tooth socket is processed by a fillet.

Optionally, a rectangular damping rod is vertically slidably mounted on the damping frame, and a corresponding clamping block is arranged at one end of the damping rod opposite to the rotating gear; a baffle disc is arranged on the damping rod; and a spring is sleeved on the damping rod between the baffle disc and the damping frame.

Advantageous effects

1. The electrode head of the invention is composed of at least 10 platinum-iridium alloys, and the 10 platinum-iridium alloys adopt a hardness gradient design from the electrode head end to the catheter body end, thereby improving the remote controllability while considering the safety and clearly recording the intracavitary electrocardiosignals.

2. When the rotating gear is rotated, the stainless steel pull wire can be pulled, so that the electrode head is bent, and the aim of bending to a certain angle and entering the tubular sinus ostium in the atrium is fulfilled.

3. According to the invention, the damping rod between the baffle disc and the damping frame is sleeved with the spring, so that the rotation of the rotating gear has a damping sense, the accuracy of the rotating angle is ensured, and the aim of accurately controlling the bending is fulfilled.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

The drawings in the following description relate to some embodiments of the invention only and are not intended to limit the invention.

In the drawings:

FIG. 1 shows a front right upper axial view schematic according to an embodiment of the invention;

FIG. 2 shows an enlarged partial structural view of A of FIG. 1 according to an embodiment of the invention;

FIG. 3 shows an enlarged partial structural view of B of FIG. 1 according to an embodiment of the invention;

FIG. 4 shows a schematic top left front axial view of an embodiment in accordance with the invention;

FIG. 5 is an axial view schematically showing the upper case of the regulating box in a state of being moved upward according to the embodiment of the present invention;

FIG. 6 shows an enlarged partial structural view of C in FIG. 5 according to an embodiment of the invention;

FIG. 7 shows a schematic partial axial view of an electrode head according to an embodiment of the invention;

fig. 8 is an axial view schematically showing a partially cut-away state of an electrode head according to an embodiment of the present invention.

List of reference numerals

1. A conduit;

2. rotating the fine tuning sleeve; 201. rotating the chuck;

3. an electrode tip; 301. a platinum iridium alloy;

4. an adjustment box; 401. a balancing stand;

5. a handle;

6. a rotation mechanism; 601. a rotating gear; 602. a rotating shaft; 603. a pulling wheel;

7. a damping frame; 701. a damping lever; 702. a catch tray; 703. a spring;

8. stainless steel pull wires.

Detailed Description

In order to make the objects, aspects and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. Unless otherwise indicated, terms used herein have the ordinary meaning in the art. Like reference symbols in the various drawings indicate like elements.

Example (b): please refer to fig. 1 to 8:

the invention provides a controllable guiding directional catheter, which comprises: acatheter 1; the distal end of thecatheter 1 is provided with anelectrode head 3; the proximal end of thecatheter 1 is provided with a rotaryfine tuning sleeve 2; the outer end of the rotaryfine tuning sleeve 2 is rotatably connected with theadjusting box 4; ahandle 5 is vertically and fixedly arranged in the middle of the outer end of theadjusting box 4; the middle part of theadjusting box 4 is vertically provided with a rotating mechanism 6; the inner end of the upper end surface of theadjusting box 4 is provided with a dampingframe 7; thecatheter 1 is internally provided with a stainlesssteel pull wire 8.

In addition, according to the embodiment of the present invention, as shown in fig. 1 and 2, the proximal end of thecatheter 1 is a hard tube, and the distal end of thecatheter 1 is a soft tube, so that thecatheter 1 can be conveniently introduced into the body, and the tip portion can be conveniently bent after being introduced into the body.

Furthermore, according to the embodiment of the present invention, as shown in fig. 1 and fig. 3, acircular spin chuck 201 is fixed at the rear end of the rotatingfine tuning sleeve 2, and thespin chuck 201 is rotatably clamped on theadjusting box 4, so that the rotatingfine tuning sleeve 2 can drive theguide tube 1 to rotate, so as to facilitate the angular adjustment of theelectrode head 3.

In addition, according to the embodiment of the invention, as shown in fig. 1 and fig. 2, theelectrode tip 3 is composed of at least 10 pieces of platinum-iridium alloy 301, and the 10 pieces of platinum-iridium alloy 301 adopt a hardness gradual change design from the end of theelectrode tip 3 to the end of the catheter body of thecatheter 1, so that the safety is considered, the remote controllability is improved, and the intracavitary electrocardiosignals can be clearly recorded.

In addition, according to the embodiment of the present invention, theconcave balance brackets 401 are fixedly mounted at the left and right ends of theadjustment box 4, respectively, so that the adjustment box can be held conveniently.

Further, according to the embodiment of the present invention, as shown in fig. 1, 3 and 6, the rotating mechanism 6 includes arotating gear 601, arotating shaft 602 and a pullingwheel 603, and therotating shaft 602 is vertically and rotatably mounted on theadjusting box 4; a pullingwheel 603 is fixedly arranged on the part of therotating shaft 602 positioned in theadjusting box 4, and the inner end of the stainlesssteel pulling wire 8 is wound on the pullingwheel 603; the part of therotating shaft 602 above theadjusting box 4 is fixedly provided with arotating gear 601, the wall of therotating gear 601 is provided with a tooth socket, the edge of the tooth socket is processed by round angle, when therotating gear 601 is rotated, the stainlesssteel pull wire 8 can be pulled, so that theelectrode head 3 is partially bent, and the purpose of bending to a certain angle and entering into the tubular sinus ostium in the atrium is achieved.

In addition, according to the embodiment of the present invention, a rectangularparallelepiped damping rod 701 is vertically slidably mounted on the dampingframe 7, and a corresponding fixture block is disposed at an end of the dampingrod 701 opposite to therotating gear 601; abaffle disc 702 is arranged on the dampingrod 701; the dampingrod 701 between theblocking disc 702 and the dampingframe 7 is sleeved with aspring 703, so that the rotation of therotating gear 601 has a damping sense, the accuracy of the rotation angle is ensured, and the purpose of accurately controlling bending is achieved.

The specific use mode and function of the embodiment are as follows: in the use process of the invention, thehandle 5 is held by hand, so that thecatheter 1 enters the body, therotating gear 601 is rotated, thetraction wheel 603 can be rotated, thereby being capable of pulling the stainlesssteel pull wire 8, the stainlesssteel pull wire 8 pulls the tip parts of theelectrode tip 3 and thecatheter 1 to bend, theelectrode tip 3 is composed of at least 10 platinum-iridium alloys 301, the 10 platinum-iridium alloys 301 adopt the hardness gradual change design from the end of theelectrode tip 3 to the end of the catheter body of thecatheter 1, the dampingrod 701 between thedisc 702 and the dampingframe 7 is sleeved with aspring 703, so that the rotation of therotating gear 601 has a damping sense, the accuracy of the rotation angle is ensured, thereby achieving the purpose of accurately controlling bending, when the angle needs to be adjusted by rotation, the rotatingfine adjustment sleeve 2 is rotated, therotating chuck 201 is rotationally clamped on theadjusting box 4, so that rotation of thefine adjustment sleeve 2 causes theguide tube 1 to rotate, so as to facilitate angular adjustment of theelectrode tip 3 portion.

Finally, it should be noted that, when describing the positions of the components and the matching relationship therebetween, the present invention is usually illustrated by one/a pair of components, however, it should be understood by those skilled in the art that such positions, matching relationship, etc. are also applicable to other/other pairs of components.

The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.

Claims (9)

1. A steerable guide, orienting catheter, comprising: a catheter (1); the distal end of the catheter (1) is provided with an electrode tip (3); the near end of the catheter (1) is provided with a rotary fine tuning sleeve (2); the outer end of the rotary fine tuning sleeve (2) is rotatably connected with the adjusting box (4); a handle (5) is vertically and fixedly arranged in the middle of the outer end of the adjusting box (4); a rotating mechanism (6) is vertically arranged in the middle of the adjusting box (4); a damping frame (7) is arranged at the inner end of the upper end face of the adjusting box (4); a stainless steel pull wire (8) is arranged in the catheter (1).

2. A steerable guide catheter as in claim 1, wherein: the near end of the catheter (1) is a hard tube, and the far end of the catheter (1) is a soft tube.

3. A steerable guide catheter as in claim 1, wherein: the rear end of the rotary fine tuning sleeve (2) is fixedly provided with a circular rotary chuck (201), and the rotary chuck (201) is rotatably clamped on the adjusting box (4).

4. A steerable guide catheter as in claim 1, wherein: the electrode tip (3) is composed of at least 10 platinum-iridium alloys (301), and the 10 platinum-iridium alloys (301) adopt a hardness gradual change design from the end of the electrode tip (3) to the end of the pipe body of the guide pipe (1).

5. A steerable guide catheter as in claim 1, wherein: the left end and the right end of the adjusting box (4) are respectively fixedly provided with a concave balancing stand (401).

6. A steerable guide catheter as in claim 1, wherein: the rotating mechanism (6) comprises a rotating gear (601), a rotating shaft (602) and a drawing wheel (603), and the rotating shaft (602) is vertically and rotatably mounted on the adjusting box (4); a traction wheel (603) is fixedly installed on the part, located inside the adjusting box (4), of the rotating shaft (602), and the inner end of the stainless steel stay wire (8) is wound on the traction wheel (603); and a rotating gear (601) is fixedly arranged on the part of the rotating shaft (602) above the adjusting box (4).

7. A steerable guide catheter as in claim 6, wherein: tooth grooves are formed in the wall of the rotating gear (601), and the edges of the tooth grooves are subjected to fillet treatment.

8. A steerable guide catheter as in claim 1, wherein: and a rectangular damping rod (701) is vertically and slidably mounted on the damping frame (7), and a corresponding clamping block is arranged at one end of the damping rod (701) opposite to the rotating gear (601).

9. A steerable guide catheter as in claim 8, wherein: a baffle disc (702) is arranged on the damping rod (701); a spring (703) is sleeved on the damping rod (701) between the stop disc (702) and the damping frame (7).

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