KR20080111925A - Surgical appliance for insertion into in-vivo - Google Patents

Abstract

A medical device for insertion in-vivo for diagnosing disease or curing affected part is provided to maximize an effect of a medical treatment by guiding a medical device to the most near location of lesion. A medical device for insertion in-vivo for diagnosing disease or curing affected part comprises a base, a guide(3), shape memory members(41, 43, 45, 47), a thermoelectric device(49), and a controller. The guide is combined in the base, is inserted into a human body. The shape memory member is arranged to a longitudinal direction in a part of the guide. The thermoelectric device is provided to an outer circumference of the guide at a section in which the shape memory member is arranged. The controller controls a current supplied in the thermoelectric device.

Description

Medical appliance for insertion into in-vivo

1 is a perspective view showing the overall shape of the induction mechanism of the medical instrument for biological insertion to explain an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1.

3 is an exploded view illustrating part A of FIG. 1.

4 is a view for explaining a first embodiment of the B portion of FIG. 1 in detail.

5 is an exploded perspective view of FIG. 4.

FIG. 6 is an unfolded view of the thermoelectric element assembly in the form of a film illustrated in FIG. 5.

FIG. 7 is a diagram for describing a second embodiment corresponding to FIG. 5.

FIG. 8 is an unfolded view of the thermoelectric element assembly in the form of a film illustrated in FIG. 7.

FIG. 9 is a diagram for describing a third embodiment corresponding to FIG. 5.

FIG. 10 is an unfolded view of the thermoelectric element assembly in the form of a film illustrated in FIG. 9.

FIG. 11 corresponds to FIG. 6 and illustrates another embodiment of the present invention.

The present invention relates to an induction mechanism of a medical device for insertion of a living body, and more particularly, is inserted into the human body so that the medical device for diagnosing a disease or treating a diseased body is accurately guided to a desired position inside the human body or inserted into the human body. The present invention relates to a medical device for insertion of a living body that can be used to treat the affected area.

In general, in the case of spine treatment for low back pain patients, nucleoplasty may be used depending on the progress of the lesion. The nucleus phacoplasty causes the needle tip of the externally inserted medical device to be positioned inside the spine close to the affected area, causing plasma discharge, thereby reducing the pressure inside the nucleus pulmonary tube and returning the protruding nucleus to its original position. In addition, the spine treatment of a low back pain patient may obtain a therapeutic effect by injecting a chemical solution into the nearest part of the lesion instead of causing plasma discharge in some cases. Medical instruments that are inserted into the human body to generate a plasma discharge, can be inserted into the human body and the tip is located as close as possible to the affected part to increase the success rate of nucleoplasty. However, medical instruments for conventional nucleoplasties may use straight needle tips or wire wires. Such a conventional medical device is not easy to place the tip portion close to the affected part in the state inserted into the spine, there is a problem that the scope of the operation is limited or the effect of the operation is inferior. In the stent implantation, in the case of malignant gastric or duodenal stenosis patients, the angle of curvature of the esophagus, gastrointestinal tract, pylorus toward the gastrointestinal tract and the entrance to the duodenum is large, and medical instruments such as guide wires for stent surgery pass to the stenosis. Difficult to become a problem is also vulnerable to stent insertion.

Therefore, the present invention has been proposed to solve the above problems, an object of the present invention is to guide the medical device to be inserted into the interior of the spine to the nearest position of the lesion for nucleoplasty, etc. for maximal therapeutic effect To provide a medical device.

In addition, another object of the present invention to provide a medical device for insertion of a living body that can be applied to the treatment of various lesions by moving the tip portion freely to the desired position near the lesion.

In order to achieve the above object, the present invention, the guide is coupled to the base and inserted into the human body, the shape memory member is disposed in the longitudinal direction in some section of the guide, the guide in the section in which the shape memory member is disposed It provides a thermoelectric device provided on the outer circumferential surface of the living body, and a medical device for implantation including a controller for controlling the current supplied to the thermoelectric device.

The guide is preferably provided with a conduit through which the medical device inserted into the human body along the longitudinal direction in the middle portion.

The guide is preferably fixed to the base by a fastening member.

The guide is preferably provided with a plasma electrode along the longitudinal direction.

The shape memory member is preferably disposed at a predetermined length on the tip side of the guide.

It is preferable that the shape memory member has a circular cross section or a rectangular cross section.

The thermoelectric element includes a plurality of connection parts to which different metal thin films are connected, and the thermoelectric elements are repeatedly disposed at regular intervals.

Preferably, the thermoelectric element is coated with a film layer.

It is preferable that one or more sets of said thermoelectric elements are arrange | positioned.

The connection parts are preferably disposed outside the shape memory members.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the overall shape for explaining an embodiment of the present invention, showing a medical device for insertion of a living body. Embodiments of the medical device for insertion of a living body described in the embodiment of the present invention, which is itself inserted into the lumen of the human body may be used as a treatment or as an induction mechanism for guiding a treatment device. The medical instrument for living body insertion includes a base 1, a guide 3 coupled to the base 1, and a controller 5 coupled to the base 1.

The base 1 may be separated or combined with a guide 3 which is typically used for a single use, and a controller 5 for electrical control is connected. The base 1 may include a conduit 11 (shown in FIGS. 2 and 3) penetrating along the center in the longitudinal direction therein. The conduit 11 is to guide another medical device for the treatment of the lesion to be inserted into the lumen of the human body. As an embodiment of the present invention, an example of a medical instrument for insertion of a living body provided with a conduit 11 may serve to guide another medical device to the lumen of the human body. Therefore, the medical device such as the radio frequency treatment device 7 may be guided to the above-described conduit 11 to treat the lesion in the human body. On the other hand, the above-described conduit 11, as shown in Figure 1, may be used to inject the chemical liquid using the chemical liquid injector (9). The chemical liquid injector 9 may be a conventional one, and may have a connection structure such as fitting fitting to the conduit 11 provided on the base 1. Of course, it is preferable that another conduit 3a (shown in FIG. 2) provided in the guide 3 is connected to the conduit 11 provided in the base 1 described above. The pipeline 3a provided in the guide 3 preferably has a structure penetrating the central portion in the longitudinal direction. On the other hand, in the embodiment of the present invention has been described as an example of the guide, the plasma electrode (4, shown in Figure 2) is provided in the longitudinal direction to the guide 3, the embodiment of the present invention is a medical device that causes a plasma discharge It can be used as.

The structure in which the base 1 and the guide 3 are coupled will be described in detail with reference to FIGS. 2 and 3. The base 1 is provided with electrode terminals 13 which are electrically connected to the controller 5 to receive a current or an electrical signal. The base 1 is also provided with a groove 1a tapered in the axial direction. The electrode terminals 13 are disposed in the tapered grooves 1a of the base 1. The electrode terminals 13 are disposed on the base 1 so that an elastic force acts toward the center direction of the base 1 to facilitate contact between the terminals. The arrangement structure of the electrode terminal 13 may transmit a current or an electrical signal to the guide 3 when the base 1 and the guide 3 are coupled to each other. In addition, the base 1 is provided with a thread 1b on the outer circumferential surface of the side of the portion engaged with the guide 3. The fastening member 15 for fixing the guide 3 is coupled to the thread 1b of the base 1. The fastening member 15 is provided with a screw groove 15a on its inner circumferential surface. In addition, the fastening member 15 is provided with a hole 15b having a size such that the guide 3 is inserted into one end. The hole 15b of the fastening member 15 is preferably made smaller in diameter than the diameter provided in the other portion, and preferably made of a larger diameter having a slight tolerance with the outer diameter of the guide 3. A fixing ring 17 is provided inside the fastening member 15. The fixed ring 17 may be a conventional O-ring (O ring) made of rubber or silicon. The fixing ring 17 is for preventing the guide 3 from being separated by pressing the guide 3 when screwing the fastening member 15 to the base 1.

The guide 3 is provided with shape memory members 41, 43, 45, 47 at a portion of the tip (indicated by B in FIG. 1). The thermoelectric elements 49, 50, and thermoelectrical elements for applying temperature to the shape memory members 41, 43, 45, and 47 outside the shape memory members 41, 43, 45, and 47 are shown in FIG. 6. ) Is placed. That is, the portion 31 in which the shape memory members 41, 43, 45, and 47 are not disposed in the guide 3 and the portion 33 in which the shape memory members 41, 43, 45, and 47 are disposed in a portion of the tip portion thereof are arranged. Is divided into). As such, the shape memory members 41, 43, 45, and 47 are disposed only on the portion 33 of the guide 3, so that the shape of the shape memory members 41, 43 is mainly limited to the deformed portion of the guide 3. , 45, 47). Therefore, even if the shape memory member (41, 43, 45, 47) is disposed only in part as in the embodiment of the present invention can achieve the object of the present invention. In the exemplary embodiment of the present invention, the shape memory members 41, 43, 45, and 47 are not limited to the distal ends of the guides 3, but may be disposed on any portion of the guide that requires deformation. As such, the shape memory members 41, 43, 45, and 47 may be disposed only at the portions necessary to deform the guide 3 to achieve the object of the present invention. It is preferable that the shape memory members 41, 43, 45, 47 of the embodiment of the present invention have a circular or rectangular cross section.

A first embodiment of the present invention will be described in more detail with reference to FIGS. 4, 5, and 6. The shape memory members 41, 43, 45, 47 may be disposed at equal intervals in the longitudinal direction on the outside of the guide 3 to form an interval of 90 °. The thermoelectric elements 49 and 50 are coupled to the outer circumferential surface of the guide 3 on which the shape memory members 41, 43, 45, and 47 are installed.

In the exemplary embodiment of the present invention, the thermoelectric element 49 may repeatedly arrange two different thin metals 51 and 53 having a predetermined length in parallel with each other, and both ends of the different metals 51 and 53. It may be made of a structure connected to each of the connecting portion (55, 57). The metals 51 and 53 and the connecting portions 55 and 57 may be coated with a synthetic resin film on a portion thereof for protection. In addition, in the exemplary embodiment of the present invention, the other thermoelectric element 50 has the same structure as the aforementioned thermoelectric element 49. That is, in another thermoelectric element 50, different metals 61 and 63 are repeatedly arranged side by side, and both ends of the metals 61 and 63 are connected to another connecting portion 65 and 67, respectively. The connecting portions 55 and 57 of the thermoelectric element 49 are disposed at positions corresponding to the shape memory members 41 and 45 corresponding to 180 °, respectively. In addition, the thermoelectric element 50 is also provided with the respective connecting portions 65 and 67 at positions corresponding to the other shape memory members 43 and 47. That is, in the embodiment of the present invention, the shape memory members 41, 43, 45, 47 are arranged at a portion of the guide 3 at regular intervals, and the shape memory members 41, 43, 45 are arranged on the outer circumferential surface of the guide 3. 47 are disposed on the thermoelectric elements 49 and 50. The thermoelectric elements 49 and 50 are parts of each metal electrically connected to the controller 5. That is, the conductive wires connected to the thermoelectric elements 49 and 50 may be made of a flexible printed circuit board made of a thin film. The thin film conductive lines 61 (shown in FIG. 3) connecting the thermoelectric elements 49 and 50 are coupled to the outer circumferential surface of the guide 3 and connected to the controller 5 through the electrode terminals 13 provided in the base 1. Is preferably electrically connected to). In addition, the thermoelectric elements 49 and 50 are preferably wrapped by a separate cover 71 for protection.

An embodiment of the present invention will be described in detail an operation process.

First, the guide 3 is inserted into the hole 15b provided in the fastening member 15. Then, after the fixing ring 17 is fitted inside the fastening member 15, the fastening member 15 and the base 1 are coupled to each other. At this time, as the base 1 and the fastening member 15 are coupled to each other by the screw thread 1b and the screw groove 15a, the fixing ring 17 is pressed by the tapered surface of the fastening member 15. Therefore, the shape of the fixing ring 17 is deformed while pressing the guide 3 to firmly fix the guide 3. At this time, the electrode terminals 13 provided on the base 1 are electrically connected while being in close contact with the conductive wires 61 made of a thin film connecting the thermoelectric elements 49 and 50 provided on the outer circumference of the guide 3. Therefore, the current controlled through the controller 5 can be transferred to the thermoelectric elements 49 and 50. A radiofrequency therapy device guide derived directly from the radiofrequency therapy device may be inserted into the conduit 11. Of course, if the guide 3 itself is equipped with a radio frequency treatment device or serves as a medical device for treatment, the living body insertion medical device itself can be used as it is.

If you want to move the end of the guide (3) to the desired position in the state where the guide (3) is inserted into the human body, by operating a manipulator (not shown) so that the control value is transmitted to the controller (5). The controller 5 then delivers current to the thermoelectric element 49. For example, by absorbing heat from the connection portion 57 of the metals 51 and 53 by the current supplied to the thermoelectric element 49, the heat is absorbed by the connection portion 55 of the metals 51 and 53, resulting in forced movement of heat. Quick cold temperature control is possible. In addition, when the direction of the current is reversed, by absorbing heat from the connection portion 55, and by dissipating heat from another connection portion 57 it is possible to quickly adjust the temperature supplied to the shape memory members (41, 45). In addition, the thermoelectric element 50 can also quickly adjust the temperature supplied to the shape memory members 43 and 45 by the above mechanism.

The shape memory members 41, 43, 45, 47 are changed to the shape already stored in accordance with the change of temperature. Therefore, the tip of the guide 3 can be bent while the shape memory members 41, 43, 45, 47 are deformed to the previously memorized shape as the temperature changes. In particular, the structure in which the shape memory members 41, 43, 45, 47 are arranged in all directions can position the tip of the guide 3 in any direction. Therefore, the tip of the guide 3 can be moved in a desired direction by the control of the controller 5. And you can do the necessary treatment with a radiofrequency treatment device. This embodiment of the present invention can be precisely moved close to the tip of the guide to the location of the lesion can be applied to a variety of lesions of the patient.

7 and 8 are views corresponding to FIGS. 5 and 6, which illustrate a second embodiment of the present invention. The second embodiment of the present invention will be described only in terms of differences from the first embodiment. The second embodiment of the present invention shows the same operation and effect as the first embodiment of the present invention, but the present invention can be implemented through various configurations. That is, in the second embodiment of the present invention, the shape memory members 141 and 145 and the other shape memory members 143 and 147 are disposed at positions having different diameters from the center, respectively, and the thermoelectric elements 149 and 150 are arranged.

9 and 10 are diagrams for describing a third embodiment of the present invention. Compared with the above-described second embodiment, only the thermoelectric elements 249 and 250 have different shapes. That is, in the third embodiment of the present invention, the thermoelectric elements 249 and 250 are formed in coil shapes based on the connection parts 255 and 257 and the other connection parts 265 and 267, respectively. The structure of the third embodiment of the present invention shows that the object of the present invention can be achieved by variously implementing the embodiment of the present invention through other configurations.

11 is a view for explaining another embodiment of the present invention and corresponds to FIG. 6. In the embodiment illustrated in FIG. 6, the shape memory members 41, 43, 45, and 47 are provided in the guide 3 along the longitudinal direction, and the thermoelectric elements 49 and 50 are disposed on the outer circumferential surface thereof. It was. However, the present invention is not limited to this example, and as illustrated in FIG. 11, thermoelectric elements 349 and 350 are disposed on the outer circumferential surface of the guide 3, and guides are provided on the outer circumferential surfaces of the thermoelectric elements 349 and 350. Shape memory members 341, 343, 345, and 347 may be disposed along the length direction of (3).

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the scope of the invention.

As described above, the present invention can freely move the tip portion of the guide to a desired position near the lesion through the configuration in which the shape memory member is disposed at the tip portion, which is a part of the guide, and the thermoelectric element is disposed in this portion, so as to treat various lesions. There is an effect that can be applied.

In addition, the present invention can increase the therapeutic effect by guiding a medical device inserted into the spine to the nearest position of the lesion during the procedure such as nucleonucleus surgery through a pipe that can be provided in the guide.

Claims (10)

Base; A guide coupled to the base and inserted into the human body; A shape memory member disposed in a longitudinal direction in a portion of the guide; A thermoelectric element provided on an outer circumferential surface of the guide in a section in which the shape memory member is disposed; And A controller for controlling a current supplied to the thermoelectric element; Medical device for biological insertion comprising a. The method according to claim 1, The guide is Medical device for a living body insertion having a conduit through which the medical device inserted into the human body along the longitudinal direction in the middle portion. The method according to claim 1, The guide is Medical device for biological insertion is fixed to the base by a fastening member. The method according to claim 1, The guide is Medical device for insertion of a living body provided with a plasma electrode along the longitudinal direction. The method according to claim 1, The shape memory member Medical instruments for biological insertion is arranged at a predetermined length on the tip side of the guide. The method according to claim 1, The shape memory member A medical device for insertion of a living body, the cross section of which has a circular or square shape. The method according to claim 1, The thermoelectric element is A medical device for biological insertion, comprising a plurality of connection parts to which different metal thin films are connected, and are repeatedly arranged at regular intervals. The method according to claim 1, The thermoelectric element is Medical device for biological insertion, characterized in that the coating with a film layer. The method according to claim 1, The thermoelectric element is At least one set is a medical device for insertion of the living body, characterized in that arranged. The method according to claim 7, The connecting portion is a medical device for insertion of the living body, characterized in that disposed on the outside of the shape memory members.

Images