CN212879300U

CN212879300U - Guide wire and medical observation device based on guide wire

Info

Publication number: CN212879300U
Application number: CN202020189691.5U
Authority: CN
Inventors: 胡国民; 恒镇辉
Original assignee: Suzhou Highwire Medical Devices Co ltd
Current assignee: Suzhou Highwire Medical Devices Co ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2021-04-06
Anticipated expiration: 2030-02-20

Abstract

The utility model discloses a seal wire and medical viewing device based on seal wire, wherein the seal wire includes the capillary, be formed with on the pipe wall of capillary and extend the continuous or spiral hole that is interrupted to the other end by its one end, the region that is close the distal end on the pipe wall of capillary is provided with the opening, the opening part is provided with to be fixed detecting element in the capillary, detecting element is fixed in through the connecting wire connection the communication of capillary near-end connects, the soft head section of seal wire is connected to the distal end of capillary. This scheme adopts the capillary that has the spiral hole, makes it have the bending and the support performance similar with traditional seal wire, provides effectual space for installing detecting element in it simultaneously, avoids detecting element to leak outward in the seal wire outside, combines the soft head of conventional seal wire at the distal end of capillary to guide, thereby can put into the disease position of human in with detecting element effectively, carry out accurate measurement, reduction that can be better is to patient's injury.

Description

Guide wire and medical observation device based on guide wire

Technical Field

The utility model relates to a medical guide apparatus field, especially seal wire and based on medical viewing device of seal wire.

Background

In clinic, monitoring physiological parameters in a body cavity of a patient can provide important reference data for treatment of a doctor, so that corresponding physiological variables such as pressure, temperature, flow rate of body fluid in the body cavity and the like need to be acquired in a safe and accurate manner.

Such as: in the urological kidney stone surgery, lithotripsy by using a holmium laser is one of the methods for measuring temperature and pressure which are commonly used at present. The energy generated by holmium laser can vaporize water between the end of the optical fiber and the calculus to form tiny vacuoles, and the energy is transferred to the calculus to crush the calculus into powder. Meanwhile, the temperature and pressure in the kidney are increased, and the injury to organs or organs is caused. To reduce harm to or, the return pressure and temperature of the flush water are often used to determine intra-renal temperature and temperature. Due to the influence of the flow of the return water, the environmental temperature and other factors, the actual situation around the calculus cannot be accurately reflected.

It would be desirable to have various probes that can be brought to corresponding lesion locations to obtain more efficient data, but how to have probes that can be brought to corresponding lesion locations is a significant impediment to limiting such applications. Various corresponding guide wires with probes have therefore been investigated and used.

For example, the pressure guide wire disclosed in application No. 201711284145.9 is provided with a middle ring sleeved on a core wire of a conventional guide wire, a groove is formed on the middle ring for mounting a sensor, and a distal sheath and a proximal sheath are respectively arranged at two ends of the middle ring, the proximal sheath can cover a sensing wire to ensure the surface of the guide wire to be smooth, the thickness of the proximal sheath is smaller because the diameter of the guide wire is usually not more than 1mm, if the middle ring is thinner than the proximal sheath, the middle ring basically cannot form a mounting groove for mounting the sensor, otherwise if the middle ring needs to provide enough mounting depth, a thicker wall thickness is needed, at this time, the mounting ring will greatly protrude out of the proximal sheath and the distal sheath, which will influence the smoothness and safety of the guide wire during pushing and pulling.

In addition, when a solid core wire is adopted, the direction of the guide wire head end is difficult to effectively regulate and control in the pushing process, and the requirement on operators is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problems existing in the prior art and providing a guide wire with physiological parameter detection performance and a medical observation device based on the guide wire.

The purpose of the utility model is realized through the following technical scheme:

the guide wire comprises a capillary tube, wherein a continuous or discontinuous spiral hole extending from one end of the capillary tube to the other end of the capillary tube is formed in the tube wall of the capillary tube, an opening is formed in the region, close to the far end, of the tube wall of the capillary tube, a detection element fixed in the capillary tube is arranged at the opening, the detection element is fixedly connected with a communication joint at the near end of the capillary tube through a connecting wire, and the far end of the capillary tube is connected with a guide wire soft head section.

Preferably, in the guide wire, the width of the spiral hole is 0.01-0.05 mm.

Preferably, in the guide wire, the detection element is a camera and a light source and/or a temperature detector and/or a pressure detector.

Preferably, in the guide wire, the soft head section of the guide wire at least comprises an end head, a core wire and a sheath, the end head is fixed at the far end of the core wire, the core wire at least comprises a small diameter section and a conical transition section from the far end to the near end, the conical transition section is coaxially connected with the far end of the capillary tube, and the sheath is surrounded outside the core wire.

Preferably, in the guide wire, the sheath is a spring ring, the spring ring is coaxially connected with the far end of the capillary tube, the diameter of the large end of the tapered transition section is smaller than the inner diameters of the capillary tube and the spring ring, the end is connected with one end of at least one steering control wire, and the other end of the steering control wire extends through the spring ring and the capillary tube and extends out of the near-end tube wall of the capillary tube.

Preferably, in the guide wire, the outer periphery of the spring ring is coated with a tpu layer, and the tpu layer is coated under the hydrophilic coating.

Preferably, in the guide wire, the core wire further includes a large diameter section coaxially fixed in a positioning block provided inside the distal end of the capillary tube, and the steering control wire passes through the positioning block.

Preferably, in the guide wire, the steering control lines are multiple and distributed in an annular shape at equal intervals.

The medical observation device based on the guide wire comprises the guide wire, and a communication joint of the guide wire is connected with a host through a communication line.

The utility model discloses technical scheme's advantage mainly embodies:

this scheme adopts the capillary that has the spiral hole, makes it have the bending and the support performance similar with traditional seal wire, provides effectual space for installing detecting element in it simultaneously, avoids detecting element to leak outward in the seal wire outside, combines the soft head of conventional seal wire at the distal end of capillary to guide, thereby can put into the disease position of human in with detecting element effectively, carry out accurate measurement, reduction that can be better is to patient's injury.

Through the design to the shape and the size of screw hole, can effectually satisfy the requirement of different bendability and support nature, the design is more nimble, and simple structure, easily realizes.

The detection element of the scheme can be selected according to needs, and can be effectively suitable for the measurement requirements of different physiological parameters.

The inner chamber of capillary of this scheme utilization through the design to soft head section to can connect the steering control line and extend to outside the near-end of capillary at the head end of seal wire, thereby can control steering control line and realize turning to of seal wire, therefore the reduction operation degree of difficulty that can be very big reduces operating personnel's requirement.

The guide wire of the scheme can be combined with a numerical control device and a cavity channel model, automatic operation can be realized, and the operation difficulty of a doctor in the using process is reduced.

Drawings

Fig. 1 is a schematic view of the present invention;

fig. 2 is a schematic view of a first embodiment of a spiral hole of a capillary tube of the present invention;

fig. 3 is a schematic view of two embodiments of the spiral hole of the capillary tube of the present invention;

FIG. 4 is a schematic view of a first embodiment of a belt steer control line of the present invention;

FIG. 5 is a schematic view of a second embodiment of a belt steer control line of the present invention;

fig. 6 is a schematic view of a third embodiment of a belt steer control line of the present invention;

fig. 7 is a schematic view of a guidewire-based medical viewing device of the present invention.

Detailed Description

Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are merely exemplary embodiments for applying the technical solutions of the present invention, and all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the scope of the present invention.

In the description of the embodiments, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.

The guide wire disclosed by the present invention is explained below with reference to the accompanying drawings, as shown in fig. 1, the guide wire includes a capillary tube 1, the capillary tube 1 is a tubular shape with a hollow inside, the hollow inside can be designed into a circle, a polygon, etc. according to the requirement, and the outer diameter of the capillary tube 1 is 0.35-0.81 mm, the length of the capillary tube is designed according to the requirement of a specific application scenario, and the present disclosure is not limited herein.

As shown in fig. 1, a spiral hole 2 extending from one end to the other end is formed on a tube wall of the capillary tube 1, the spiral hole 2 may be continuous or discontinuous and segmented, and is preferably continuous, and the extending length thereof is designed according to the length of a required soft head and the hardness of the soft head, and since the spiral hole 2 is formed on the tube wall, the rigidity and strength of the tube body provided with a slit region are reduced, so that the bending deformation capability thereof is improved, and the required head flexibility can be obtained.

Also, since different forms of slit designs may have a certain effect on flexibility, the inventor has found that, in a possible embodiment, as shown in fig. 2, the spiral hole 2 has an equal-lead spiral shape, i.e., the lead of each spiral section is L1= L2= L3= L4= … … = Ln, and the tip end region of the capillary tube 1 can be bent at a relatively large amplitude and a large angle.

In yet another possible embodiment, as shown in fig. 3, the screw holes 2 may be a decreasing-lead or an increasing-lead spiral, further preferred, the screw holes 2 are decreasing-lead spirals, and the lead of each spiral section from the proximal end to the distal end of the capillary 1 satisfies L1= L2x (Δ +1) = L3x (Δ +2) = L4x (Δ +3) … … … = Lnx (Δ + n), where Δ is a value designed according to the soft-head length and the hardness requirement, so that the head end region of the capillary 1 can be bent with a relatively small amplitude and a small angle.

In addition, the width of the spiral hole 2 is different, which causes the difference of softness of the covered area, generally speaking, the wider the width of the spiral hole 2 is, the softer the softness of the processed area is, preferably, the width of the spiral hole 2 is 0.01 to 0.05mm, because the capillary is smaller, when the width is too large, the structural strength and rigidity of the capillary are too small, which affects the torque transmission performance, on the contrary, the width of the slit is too small, and the softness of the corresponding area is not easy to meet the requirement. Moreover, the widths of the spiral holes 2 in different regions may be the same or different, for example, the width of the spiral hole 2 gradually increases from the proximal end to the distal end, and the region with the larger width is softer.

Meanwhile, after cutting, burrs or sharp parts may exist at the edge position of the spiral hole 2, so that the edge area of the cutting seam is set to be a round angle, damage to a cavity channel caused by the edge of the cutting seam during subsequent use can be effectively reduced, and particularly, the edge position of the spiral hole 2 can be polished after cutting.

In the above-mentioned stainless steel capillary processing, various feasible processes can be adopted, for example, a metal cutting saw, electric discharge machining, laser cutting and the like, preferably laser cutting is adopted, and the specific processing process is as follows:

inputting designed lead parameters (CAD drawings) into a numerical control laser cutting machine, wherein the capillary 1 is driven by a numerical control turntable to rotate according to the requirements of the design parameters, and the laser head is driven by a numerical control platform to translate according to the requirements of the design parameters, so that the capillary 1 is cut and processed by the laser continuously emitted by the laser head to form a set spiral hole; and in the cutting process, the capillary is injected with water for cooling through the connecting device.

Of course, in other embodiments, the laser head may be kept stationary, and the capillary 1 may be moved in translation and rotation; in addition, it is also possible to make the capillary 1 stationary and the laser head perform a translational and rotational movement.

After the capillary 1 with the composite requirement is processed, as shown in fig. 1, an opening 3 is provided on a region of a tube wall of the capillary 1 near a distal end, where the opening 3 may be a detecting element 4 fixed in the capillary 1 at the opening 3, and the detecting element 4 is connected to a communication joint 6 fixed at a proximal end of the capillary 1 through a connecting wire 5.

The detection element 4 is a camera and a light source and/or a temperature detector and/or a pressure detector, depending on the application scenario. For example, when the detecting elements 4 are a camera and a light source, they constitute an endoscope-like structure, and they do not protrude outside the opening 3, they can be fixed in the capillary tube 1 by means of gluing, or they can be mounted by means of welding or other feasible means. For example, the image pickup and the light source can be integrated into one probe, but also can be screwed, for example, a stud or a connection post with a screw hole is welded in the capillary 1 through the opening 3, and the screw hole or the bolt is formed on the inner probe. Of course, a mounting seat or a bracket may be fixed in the capillary tube 1, and the light source and the camera may be fixed on the mounting seat or the bracket by screws or the like. When the detecting element 4 is a temperature detector and/or a pressure detector, they can be various probes integrated with a feasible temperature sensing chip and/or pressure sensing chip, and the installation mode can be the same as that of the endoscope; of course, they may be piezoelectric sensors or optical fiber sensors or other feasible sensors, and the specific structures of the various detecting elements 4 are all the prior art and will not be described herein.

And in a preferred embodiment, when the detection element 4 is installed in the capillary 1, a certain clearance exists between the detection element and the wall of the capillary 1, so that a condition for arranging a steering control line 8 can be provided.

The far end of the capillary is connected with a guide wire soft head section 7, the guide wire soft head section 7 provides suitable flexibility, support and controllability, and the guide wire soft head section 7 can be the structure of the non-invasive soft end of various known guide wires. In a preferred embodiment, as shown in fig. 4, the guide wire soft head section 7 at least comprises a tip 71, a core wire 72 and a sheath 73, wherein the tip 71 is hemispherical, the cambered surface faces forwards, the plane faces backwards, and the plane of the tip 71 is coaxially fixed at the distal end of the core wire 72, for example, welded and fixed. The core wire 72 comprises at least a coaxial small diameter section 721 and a tapered transition section 722 from the distal end to the proximal end, and the large diameter end of the tapered transition section 722 is coaxially connected with the distal end of the capillary 1. The sheath 73 may be a coil sheath, a plastic sheath, or a polymer sheath, which surrounds the core wire 72.

In a preferred embodiment, as shown in fig. 4, the sheath 73 is a coil, and the coil is coaxially connected to the distal end of the capillary tube 1, while the large end diameter of the tapered transition section 722 is smaller than the inner diameter of the capillary tube 1 and the inner diameter of the coil, a connecting plate (not labeled in the figure) is disposed at the opening of the distal end of the capillary tube 1, the proximal end surface of the tapered transition section 722 is coaxially connected to the connecting plate, such as by welding or gluing, the tip 71 is connected to one end of at least one steering control wire 8, and the other end of the steering control wire 8 extends through the coil, the connecting plate and the capillary tube 1 and protrudes from the proximal tube wall of the capillary tube 1 to the outside of the capillary tube 1.

In another embodiment, as shown in fig. 5, the core wire 72 is fixed in a positioning block 9 at the distal end of the capillary tube 1, specifically, the core wire 72 further includes a thick section 723, the positioning block 9 is an annular member whose outer wall shape and size are matched with those of the inner hole of the capillary tube 1, the positioning block 9 is fixed in the capillary tube 1 at the distal end of the capillary tube 1 and in front of the opening 3 by gluing or welding, the thick section 723 of the core wire 72 is coaxially fixed in the central hole of the positioning block 9, and the positioning block 9 is formed with a through hole 91 for the steering control wire 8 to pass through.

In a preferred embodiment, the steering control lines 8 are multiple and equally spaced in a ring shape in order to achieve adjustment in multiple directions. For example, as shown in fig. 5, when the number of the steering control lines 8 is two, they are distributed oppositely; when the number of the steering control lines 8 is three, the steering control lines are distributed in an equilateral triangle; when the steering control lines 8 are four, they are arranged in a square and so on. Moreover, the hole of each steering control wire 8 penetrating through the capillary 1 corresponds to the connection position of the hole on the end head 71, so that the controllable direction of each steering control wire 8 can be conveniently determined.

Further, the coil is preferably made of various materials with developing properties, such as platinum, and in order to ensure the smoothness of the guide wire soft tip section 7, as shown in fig. 6, the coil is preferably coated with a tpu layer 74 on the outer circumference, the tpu layer 74 is coated under a hydrophilic coating 75, and in a more preferred embodiment, the tpu layer 74 also coats the tip 71 and extends to the wall of the tube at the distal end of the capillary 1. Meanwhile, the surface of the capillary tube 1 is coated with a super-smooth hydrophilic coating and/or a polytetrafluoroethylene layer 11, so that the lubricity of the surface of the capillary tube 1 can be improved, and the smoothness of pushing can be improved.

The present disclosure further discloses a medical observation device based on a guide wire, as shown in fig. 7, which includes the guide wire 10 of the above embodiment, the communication connector 6 of the guide wire is connected to a host 30 through a communication line 20, the communication connector 6 and the communication line 20 may be various known data lines capable of transmitting signals of the detecting element 4 to the host 30, the host 30 may be a desktop computer, a notebook, a smartphone, a tablet computer, etc., and the specific structures and connection structures of the communication connector 6, the communication line 20 and the host 30 are known technologies, which are not important in the present disclosure, and are not described herein again.

Of course, in other embodiments, the communication connector 6 may also be connected to and communicate with the host 30 in a wireless communication manner, which is known in the art and will not be described herein.

The utility model has a plurality of implementation modes, and all technical schemes formed by adopting equivalent transformation or equivalent transformation all fall within the protection scope of the utility model.

Claims

1. A guidewire, characterized by: including capillary (1), be formed with on the pipe wall of capillary (1) and extend continuous or interrupted spiral hole (2) by its one end to the other end, the region that is close the distal end on the pipe wall of capillary (1) is provided with opening (3), opening (3) department is provided with to be fixed detecting element (4) in capillary (1), detecting element (4) are connected through connecting wire (5) and are fixed in communication joint (6) of capillary (1) near-end, the soft first section of seal wire (7) are connected to the distal end of capillary.

2. The guidewire of claim 1, wherein: the width of the spiral hole (2) is 0.01-0.05 mm.

3. The guidewire of claim 1, wherein: the detection element (4) is a camera and a light source and/or a temperature detector and/or a pressure detector.

4. The guidewire of any one of claims 1-3, wherein: the guide wire soft head section (7) at least comprises a tip (71), a core wire (72) and a sheath (73), the tip (71) is fixed at the far end of the core wire (72), the core wire (72) at least comprises a small-diameter section (721) and a conical transition section (722) from the far end to the near end, the conical transition section (722) is coaxially connected with the far end of the capillary tube (1), and the sheath (73) is arranged around the core wire (72).

5. The guidewire of claim 4, wherein: the sheath (73) is a spring ring, the spring ring is coaxially connected with the far end of the capillary tube (1), the diameter of the large end of the conical transition section (722) is smaller than the inner diameters of the capillary tube (1) and the spring ring, the end head (71) is connected with one end of at least one steering control line (8), and the other end of the steering control line (8) extends through the spring ring, the capillary tube (1) and extends out of the near-end tube wall of the capillary tube (1).

6. The guidewire of claim 5, wherein: the outer periphery of the spring ring is coated with a tpu layer (74), and the tpu layer (74) is coated under a hydrophilic coating (75).

7. The guidewire of claim 5, wherein: the core wire (72) further comprises a large diameter section (723), the large diameter section (723) is coaxially fixed in a positioning block (9) provided inside the distal end of the capillary tube (1), and the steering control wire (8) passes through the positioning block (9).

8. The guidewire of claim 5, wherein: the steering control lines (8) are distributed in an annular shape at equal intervals.

9. Medical viewing device based on seal wire, its characterized in that: the guide wire (10) according to any one of claims 1 to 8, the communication connector (6) of which is connected to a host computer (30) via a communication line (20).