CN111317549B

CN111317549B - Ultrasonic endoscope puncture needle system in power-on mode

Info

Publication number: CN111317549B
Application number: CN202010138772.7A
Authority: CN
Inventors: 刘卫辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2021-02-19
Anticipated expiration: 2040-03-03
Also published as: CN111317549A

Abstract

The invention discloses an ultrasonic endoscope puncture needle system in a power-on mode. Comprises a solid needle and a hollow needle tube; the hollow needle tube comprises a needle body section and a needle point section, a hollow needle tube handle is arranged on the outer wall of the needle body section, and a notch is formed in the end part of the needle point section, so that a cutting part capable of cutting tissues is formed at the end part of the needle point section; the hollow needle tube handle is provided with an injector interface; the solid needle comprises a needle body and a needle head, the tail part of the needle body is provided with a solid needle handle, and the solid needle handle is provided with a positive electrode interface; the outer wall of the needle body is provided with an insulating layer; the needle head is of a conical structure, and the top of the conical structure is of an arc structure; the side edge of the bottom of the needle head is provided with an arc-shaped baffle plate for covering the cutting part, the arc-shaped baffle plate comprises a fixed part and a movable part which are hinged with each other, and the fixed part is connected with the movable part through a return spring; the tail part of the needle body section is also provided with a sealing element. The invention sends the needle into the target area in the electric cutting or electric coagulation mode, which is safe and reliable and easy to operate.

Description

Ultrasonic endoscope puncture needle system in power-on mode

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to an ultrasonic endoscope puncture needle system in a power-on mode.

Background

At present, the diagnosis value of diseases under the ultrasonic endoscope, particularly for mediastinum and digestive organs, is getting higher and higher. Interventional therapy under ultrasonic endoscopy is gradually applied to multiple aspects: comprises puncture biopsy under an ultrasonic endoscope, bile duct drainage, pancreatic duct drainage, medicine injection, particle implantation and the like. Regardless of the type of interventional procedure, it is necessary to first insert an ultrasonically guided needle into the target area, and prior art sonoendoscopic needles use explosive forces to insert the needle into the target area. The main structure includes: the biopsy needle consists of a stainless steel cutting sleeve, a needle core, a plastic handle and a trigger. The QCS biopsy needle consists of a coaxial puncture needle (consisting of a needle tube and a needle core) and a QC biopsy needle.

The disadvantages of the existing needles are as follows: (1) the need for violent rapid penetration of the area is sometimes difficult to achieve, such as with novice hands, where the tissue is too hard to penetrate; (2) the purity of the tissue in the target area is interfered by the mixed tissues generated by the ways of passing through the wall of the digestive tract and the like; (3) the puncture path has the risk of blood vessel puncture bleeding; (4) by sucking tissues into the needle cylinder, the possibility of blood great pollution is brought, and the possibility is also an important factor that the tissue positive rate is influenced; (5) the needle can be taken out after the endoscope is sheathed, and when the endoscope is bent to a larger degree, such as in a descending section area of duodenum, the outer sheath tube cannot extend out, and the endoscope can be sheathed after the outer sheath tube is withdrawn.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an ultrasonic endoscope puncture needle system in a power-on mode.

An ultrasonic endoscope puncture needle system in a power-on mode comprises a solid needle and a hollow needle tube sleeved outside the solid needle;

the hollow needle tube comprises a needle body section and a needle point section, a hollow needle tube handle is arranged on the outer wall of the needle body section, and a notch is formed in the end part of the needle point section, so that a cutting part capable of cutting tissues is formed at the end part of the needle point section; the hollow needle tube handle is provided with an injector interface which is communicated with the hollow cavity inside the hollow needle tube;

the solid needle comprises a needle body and a needle head, a solid needle handle is arranged on the outer wall of the tail part of the needle body, a positive electrode interface used for connecting an external electrode tip is arranged on the solid needle handle, and the external electrode tip penetrates through the positive electrode interface to be abutted against the needle body to electrify the needle body; the outer wall of the needle body is provided with an insulating layer;

the needle head is of a conical structure, and the top of the conical structure is of an arc structure; the side edge of the bottom of the needle head is provided with an arc-shaped baffle plate which is connected with the needle head and used for covering the cutting part, the arc-shaped baffle plate comprises a fixed part connected with the needle head and a movable part hinged with the fixed part, and the fixed part and the movable part are also connected through a return spring;

the tail part of the needle body section is also provided with a sealing piece which is sleeved on the outer wall of the needle body and used for sealing a gap between the needle body and the needle body section.

By adopting the system, an outer sheath tube is not needed during puncture, the structure is simple, and when the channel in the endoscope is punctured, the damage of the cutting part of the hollow needle tube to the inner wall of the endoscope is avoided due to the design of the arc-shaped baffle plate, so that the safety of the inner wall of the endoscope is ensured; meanwhile, the solid needle head is also of an arc-shaped structure, so that the inner wall of the endoscope cannot be damaged, and the solid needle head can shuttle with the endoscope without worry. In addition, after the solid needle enters a human body, the solid needle is electrified only when contacting with the gastrointestinal wall of a patient, and is sent into a target area in an electrotomy or electrocoagulation mode, so that puncture is not needed to be performed forcibly, safety and reliability are realized, and meanwhile, the electrocoagulation function can coagulate small blood vessels to avoid bleeding and the possibility that blood pollutes a specimen.

Further, still articulated on the solid needle handle have the limiting plate, hollow needle tube is equipped with the draw-in groove that is used for holding the limiting plate tip on hand, limiting plate one end is articulated with solid needle handle, and the other end card is gone into in the draw-in groove. By adopting the design, the limiting plate can be clamped, so that the situation that the cutting part of the hollow needle tube is exposed to damage the inner wall of the endoscope due to displacement when the solid needle and the hollow needle tube shuttle in the endoscope is avoided.

Further, solid needle handle side still is equipped with the holding tank that is used for holding the limiting plate, and is equipped with the arcwall face that is used for making things convenient for to hold at solid needle handle lateral wall one. The design of the arc-shaped surface I is adopted, so that the hand can be conveniently held tightly, and the slipping condition is avoided.

Furthermore, the outer wall of the hollow needle tube handle is provided with a second arc-shaped surface for facilitating hand holding. With the design of arcwall face two, can make things convenient for the hand to hold tightly, the condition of skidding does not appear.

Further, a sealing ring is arranged between the sealing element and the needle body. The sealing ring is adopted, so that the sealing effect can be improved, and negative pressure can be generated in the hollow needle tube when the injector is used, so that tissues are sucked into the hollow needle tube.

Furthermore, the top of the needle head is of a hemispherical structure, an insulating layer is arranged on the surface of the side face of the needle head, and the end part of the free end of the movable part is an arc-shaped surface.

The cutting device further comprises a draw hook used for drawing the movable part to cover the cutting part, wherein the draw hook comprises a vertical rod, an arc-shaped hook connected with one end of the vertical rod and a circular ring connected with the other end of the vertical rod; the side of the movable part facing the needle body is provided with a slotted hole which is convenient for the arc-shaped hook to hook the movable part. The design of the draw hook is adopted for realizing repeated use, because when the puncture system needs to be repeatedly used, but not used for one time, the draw hook can easily cover the arc-shaped baffle outside the cutting part, so that the system can be restored to the initial position, and the next operation is convenient after disinfection. Of course, if reuse is not required, the retractor need not be provided.

Furthermore, an accommodating cavity for accommodating the draw hook is arranged at the tail part of the solid needle handle; the accommodating cavity is composed of a strip-shaped channel and an inclined channel communicated with the strip-shaped channel, the strip-shaped channel is used for accommodating a vertical rod, and the inclined channel is used for accommodating an arc-shaped hook. By adopting the design, the draw hook is convenient to store, can not be found when in use, and can ensure that the draw hook can not scratch an operator.

Compared with the prior art, the ultrasonic endoscope puncture needle system provided by the embodiment of the invention has the following beneficial effects:

1. the endoscope is provided with the arc-shaped baffle, so that the cutting part of the hollow needle tube can be covered, the inner wall of the endoscope cannot be damaged when the endoscope passes through the endoscope, and the direction can be changed at any time to safely reach a destination; moreover, the solid needle can be connected with a positive electrode, can carry out electrocoagulation cauterization on tissues in a puncture path, avoids biopsy interference of mixed tissues, and can also penetrate hard tissues.

2. The solid needle is delivered into a target area in an electrotomy or electrocoagulation mode, small blood vessels in a puncture path can be subjected to direct electrocoagulation, and if bleeding occurs at a puncture opening, electrocoagulation hemostasis can be performed, so that the safety is ensured; in addition, because the encountered blood can be solidified, the possibility of blood contamination becomes small.

3. The invention has no sheath tube structure, simplifies the puncture procedure, can go out of the sheath tube first and then go into the endoscope to search the target area after reaching the target area without withdrawing the endoscope, and avoids the risk of losing the target area.

Additional features of the invention will be set forth in part in the description which follows. Additional features of some aspects of the invention will become apparent to those of ordinary skill in the art upon examination of the following description and accompanying drawings or may be learned by the manufacture or operation of the embodiments. The features of the present disclosure may be realized and attained by practice or use of various methods, instrumentalities and combinations of the specific embodiments described below.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention. Like reference symbols in the various drawings indicate like elements. Wherein the content of the first and second substances,

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the present invention with the guard not covering the cutting section;

FIG. 4 is a schematic view of the present invention with a solid needle retracted into the hollow needle cannula;

FIG. 5 is a schematic view of a solid needle tip;

fig. 6 is a schematic view of the hook structure.

The reference numerals are explained below: 1-solid needle, 2-hollow needle tube, 3-hollow needle tube handle, 4-notch, 5-cutting part, 6-injector interface, 7-solid needle handle, 8-positive electrode interface, 9-arc baffle, 10-fixed part, 11-movable part, 12-reset spring, 13-sealing part, 14-limiting plate, 15-clamping groove, 16-accommodating groove, 17-arc surface I, 18-arc surface II, 19-sealing ring and 20-drag hook.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that if the terms "first", "second", etc. are used in the description and claims of the present invention and in the accompanying drawings, they are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, if the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present invention, if the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. are referred to, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

In addition, in the present invention, the terms "mounted," "disposed," "provided," "connected," "sleeved," and the like should be construed broadly if they are referred to. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in figures 1-5, an ultrasonic endoscope puncture needle system in a power-on mode comprises a solid needle 1 and a solid needle tube 2; wherein, the hollow needle tube is sleeved outside the solid needle and used for cutting and collecting tissues.

The hollow needle tube comprises a needle body section and a needle point section, wherein a hollow needle tube handle 3 is arranged on the outer wall of the needle body section, and is convenient for an operator to hold by hands, so that the hollow needle tube is pushed to move forwards or backwards integrally; the end part of the needle point section is provided with a gap 4, so that the end part of the needle point section forms a cutting part 5 capable of cutting tissues, the side surface of the gap is triangular, and the shape of the whole needle point section is similar to the shape of a shark mouth; the handle of the hollow needle tube is provided with an injector interface 6 which is communicated with the inner cavity of the hollow needle tube; by adopting the hollow needle tube, when the hollow needle tube is conveyed into a gastrointestinal wall from an endoscope channel to a target area by the solid needle, the tissue is cut by the cutting part, and meanwhile, the hollow needle tube is connected to an injector interface by the injector to suck the injector, so that the cut tissue is sucked into the hollow needle tube, and then the hollow needle tube is withdrawn, and the tissue is taken out to be detected.

The solid needle comprises a needle body and a needle head, wherein a solid needle handle 7 is arranged on the outer wall of the tail part of the needle body, and the handle is convenient for an operator to hold by a hand, so that the whole solid needle is pushed to move forwards or backwards; the solid needle handle is provided with a positive electrode interface 8 for connecting an external electrode tip, and the external electrode tip penetrates through the positive electrode interface to be abutted against the needle body so as to electrify the needle body; the outer wall of the needle body is provided with an insulating layer; the positive electrode connected with the positive electrode interface is the conventional electrode in a hospital, is the same as an electrode device used for accessories such as polypectomy and the like, adopts the design of an insulating layer, and mainly aims to generate electricity only on the needle head part and ensure the safety of the whole device because the surface of the needle body is not electrified after being electrified; in addition, the needle body is only connected with the positive electrode, and the negative electrode is attached to the skin of the surface of a human body in the prior art of a hospital, so that the needle can be electrified only after being contacted with the gastrointestinal wall, and the safety of the whole puncture process is further ensured.

In order to ensure that the whole device cannot damage the endoscope wall when running in the endoscope channel, the needle head of the embodiment adopts a conical structure, and the top of the conical structure is of an arc structure; the side edge of the bottom of the needle head is provided with an arc-shaped baffle plate 9 which is connected with the needle head and used for covering the cutting part, the arc-shaped baffle plate comprises a fixed part 10 connected with the needle head and a movable part 11 hinged with the fixed part, and the fixed part and the movable part are also connected through a return spring 12; adopt the design of above-mentioned syringe needle, can be when entire system gets into the scope passageway, no matter be solid needle or hollow needle tubing can not lead to the fact the destruction to the mirror wall, can be safe get into in the human body, get into human internal back when the front portion of whole device, and the syringe needle contacts just can the circular telegram of patient's gastrointestinal wall, carry out the electricity congeals cauterization to the tissue in the route, the biopsy interference of mixed tissue has been avoided, let the hollow needle tubing can be smooth reach the target area, only need pull hollow needle tubing backward alone a little afterwards, movable part will be rotatory inwards under reset spring's effect, at this moment the arc baffle has just not covered cutting part, after return solid needle to hollow needle tubing can, promote hollow needle tubing afterwards and organize cutting operation can.

In order to ensure that the hollow needle tube can keep sealed when the syringe sucks, the tail part of the needle body section is also provided with a sealing piece 13 which is sleeved on the outer wall of the needle body and used for sealing a gap between the needle body and the needle body section.

In order to ensure that the hollow needle tube and the solid needle keep relatively static in the moving process and do not displace, the solid needle handle of the embodiment is hinged with a limiting plate 14, the hollow needle tube handle is provided with a clamping groove 15 for accommodating the end part of the limiting plate, one end of the limiting plate is hinged with the solid needle handle, and the other end of the limiting plate is clamped into the clamping groove. By adopting the design of the limiting plate and the clamping groove, the distance between the hollow needle tube handle and the solid needle tube handle can be kept constant, so that the position between the needle head and the needle point section is kept unchanged, and the arc-shaped baffle plate can cover the cutting part; when this device punctures, because the one end of limiting plate links to each other with solid needle handle, the other end inserts in the draw-in groove, so only need promote solid needle handle or limiting plate, just can make solid needle and hollow needle tubing move forward in step to avoid the cutting part to break away from cowl, lead to exposing in the outside and cause the damage to the mirror inner wall. However, when the target area is reached, in order to facilitate the cutting part to be separated from the protection of the arc-shaped baffle plate, the limiting plate only needs to be rotated to separate from the clamping groove, at this time, the hollow needle tube handle is moved backwards slightly, so that the needle tip section is driven to move backwards for a certain distance, the cutting part is separated from the protection of the arc-shaped baffle plate, and then the solid needle is returned into the hollow needle tube, so that the tissue can be cut by the cutting part.

In order to prevent the rotated limiting plate from affecting the subsequent operation, the side of the solid needle handle of the embodiment is further provided with a receiving groove 16 for receiving the limiting plate, and the side wall of the solid needle handle is provided with a first arc-shaped surface 17 for facilitating holding. Adopt the setting of holding tank, can accomodate the limiting plate in it to make solid needle handle make things convenient for the operator to hold, and the condition that can not appear hindering.

Furthermore, the outer wall of the hollow needle tube handle is provided with a second arc-shaped surface 18 for facilitating hand holding.

In order to enhance the sealing performance of the sealing element, a sealing ring 19 is arranged between the sealing element and the needle body.

In order to make electrocoagulation more concentrated after electrification, the top of the needle head is of a hemispherical structure, the surface of the side surface of the needle head is provided with an insulating layer, and the end part of the free end of the movable part is an arc-shaped surface. After being electrified, the top of the hemisphere can perform electrocoagulation on tissues, so that damage to other tissues is reduced.

Because the general puncture needle system is disposable, the successful puncture can be realized by adopting the structure of the invention. If the puncture needle system of the present application needs to be reused in a special situation, the following structure needs to be provided:

in order to facilitate the opening of the arc-shaped baffle plate and cover the cutting part, as shown in fig. 6, the present embodiment further includes a draw hook 20 for drawing the movable part to cover the cutting part, wherein the draw hook includes a vertical rod, an arc-shaped hook connected to one end of the vertical rod, and a ring connected to the other end of the vertical rod; the side of the movable part facing the needle body is provided with a slotted hole which is convenient for the arc-shaped hook to hook the movable part. The design of the draw hook is adopted, the movable plate of the arc-shaped baffle plate can be outwards drawn open through the draw hook, and the operation is convenient and safe.

In order to store the draw hook and find the draw hook in time when in use, the tail part of the solid needle handle of the embodiment is provided with an accommodating cavity for accommodating the draw hook; the accommodating cavity is composed of a strip-shaped channel and an inclined channel communicated with the strip-shaped channel, the strip-shaped channel is used for accommodating a vertical rod, and the inclined channel is used for accommodating an arc-shaped hook. The design that the chamber was held in the adoption can put into the vertical pole and the arc hook of drag hook and hold the intracavity, avoids the fish tail operator.

Adopt the design of above-mentioned structure, can disinfect equipment after once puncturing succeeds, then adopt the drag hook to pull open cowl cover cutting portion, carry out the secondary and use.

Compared with the prior art, the system of the invention does not use an outer sheath tube structure, can still smoothly puncture, does not need to puncture tissues with violent force like before, only needs to be conventionally deepened in the application, can realize the opening of a channel by adopting electrocoagulation cauterization, is convenient for absorbing tissues or cells, and is very safe to use.

It should be noted that all of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.

In addition, the above-described embodiments are exemplary, and those skilled in the art, having benefit of this disclosure, will appreciate numerous solutions that are within the scope of the disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. An ultrasonic endoscope puncture needle system in a power-on mode comprises a solid needle (1) and a hollow needle tube (2) sleeved outside the solid needle; it is characterized in that the preparation method is characterized in that,

the hollow needle tube comprises a needle body section and a needle point section, a hollow needle tube handle (3) is arranged on the outer wall of the needle body section, and a notch (4) is formed in the end part of the needle point section, so that a cutting part (5) capable of cutting tissues is formed in the end part of the needle point section; the handle of the hollow needle tube is provided with an injector interface (6) which is communicated with the inner cavity of the hollow needle tube;

the solid needle comprises a needle body and a needle head, a solid needle handle (7) is arranged on the outer wall of the tail part of the needle body, a positive electrode interface (8) used for connecting an external electrode tip is arranged on the solid needle handle, and the external electrode tip penetrates through the positive electrode interface to be abutted against the needle body so as to electrify the needle body; the outer wall of the needle body is provided with an insulating layer;

the needle head is of a conical structure, and the top of the conical structure is of an arc structure; an arc-shaped baffle (9) which is connected with the needle head and is used for covering the cutting part is arranged on the side edge of the bottom of the needle head, the arc-shaped baffle comprises a fixed part (10) connected with the needle head and a movable part (11) hinged with the fixed part, and the fixed part is connected with the movable part through a return spring (12);

the tail part of the needle body section is also provided with a sealing piece (13), and the sealing piece is sleeved on the outer wall of the needle body and used for sealing a gap between the needle body and the needle body section.

2. The power-on mode ultrasonic endoscope puncture needle system according to claim 1, wherein the solid needle handle is further hinged with a limit plate (14), the hollow needle handle is provided with a slot (15) for accommodating an end of the limit plate, one end of the limit plate is hinged with the solid needle handle, and the other end of the limit plate is clamped in the slot.

3. The power-on mode ultrasonic endoscope puncture needle system according to claim 2, wherein the solid needle handle side is further provided with a receiving groove (16) for receiving the limiting plate, and the solid needle handle side wall is provided with a first arc-shaped surface (17) for facilitating hand holding.

4. The power-on mode endoultrasonic needle system as claimed in claim 1, wherein the outer wall of the hollow needle tube handle is provided with a second arc-shaped surface (18) for facilitating hand holding.

5. An energized mode endoultrasonic needle system according to claim 1, wherein a seal (19) is disposed between the seal and the needle body.

6. The power-on mode endoultrasonic needle system of claim 1, wherein the tip of the needle is a hemisphere, an insulating layer is formed on the surface of the side of the needle, and the free end of the movable portion is curved.

7. The power-on mode endoultrasound needle system according to any one of claims 1 to 6, further comprising a retractor (20) for pulling the movable portion apart to cover the cutting portion, the retractor comprising a vertical rod, an arcuate hook attached to one end of the vertical rod, and a circular ring attached to the other end of the vertical rod; the side of the movable part facing the needle body is provided with a slotted hole which is convenient for the arc-shaped hook to hook the movable part.

8. The power-on mode endoultrasonic needle system as claimed in claim 7, wherein the solid needle handle has a receiving cavity at a rear portion thereof for receiving the retractor; the accommodating cavity is composed of a strip-shaped channel and an inclined channel communicated with the strip-shaped channel, the strip-shaped channel is used for accommodating a vertical rod, and the inclined channel is used for accommodating an arc-shaped hook.