CN119818163B - Guide needle capable of breaking wire - Google Patents

Abstract

The present invention discloses a breakable guide needle, belonging to the technical field of medical devices, comprising a guide structure, the guide structure comprising a needle body and a cap body, wherein a connecting head is provided inside the needle body, and a cutting component is further provided inside the needle body. The cutting component comprises a cutting element, and the annular channel between the cutting element and the needle body is a lead channel. The lead channel is provided with a wire, and a receiving part is provided on the inner wall near the tip of the needle body. The cutting element comprises a tube body, a threaded column, and a cutting end. Through the present invention, it is achieved that in the surgical process of micro wound deep placement of wire using a guide needle, if it is necessary to cut the wire in deep tissue, the opening needs to be enlarged to expose it, and the wire needs to be cut before it can be cut. Cutting, and the present invention utilizes the guide needle itself to cut the wire in situ within deep tissue, It avoids repeatedly puncturing tissue or enlarging the opening due to exposing the broken wire, which further aggravates the tissue damage. At the same time, it does not need to wait for the cooperation of an assistant, thus speeding up the pace of surgery. The implanted wire and guide needle are always in the tissue, with less contact with the air, reducing the probability of possible additional bacterial pollution. In the surgical environment with high requirements for sterile operation, the sterile state of the surgical area is maintained to the maximum extent.

Description

Guide needle capable of breaking wire

Technical Field

The invention mainly relates to the technical field of medical instruments, in particular to a guide needle capable of breaking wires.

Background

Medical devices refer to instruments, devices, appliances, in vitro diagnostic reagents and calibrators, materials and other similar or related items used directly or indirectly for the human body, including medical devices and medical consumables, the utility of which is mainly obtained by physical means, etc., for the purpose of diagnosis, prevention, monitoring, treatment or alleviation of diseases, diagnosis, monitoring, treatment, alleviation or functional compensation of injuries, examination, replacement, regulation or support of physiological structures or physiological processes, support or maintenance of life, and information for medical or diagnostic purposes by examining samples from the human body.

The guiding needle is a common medical instrument, when some complex puncture operations are performed, the guiding needle can help doctors to accurately position target tissues or organs, the guiding needle can also be used as a preliminary channel establishment tool, in vascular interventional operations such as coronary angiography or stent implantation, the guiding needle firstly punctures blood vessels, so that subsequent wires can enter the blood vessels through the guiding needle, the existing guiding needle mainly comprises a needle point, a needle body and a needle seat, after the wires are introduced, an additional cutting tool is needed to cut the wires, two to three persons are generally needed to cooperate to perform operations, besides an attending doctor, at least one assistant is needed to cut the wires, the inconvenience is very high in operation, in emergency or complex medical operation scenes, the time is a very critical factor, if one person of the main operating doctor completes the operation of cutting the wires, the time spent in communication and handover links can be reduced, for example, in cardiac interventional operations, every second is about life safety of patients, when the main operating doctor judges that the position of the wires need to be adjusted or the operation steps need to be finished, the main operating doctor can immediately execute the cutting tools, the auxiliary operations need not to wait for the operation, the heart risk of the heart assistants need to be exposed in the important cardiac surgery is reduced, and the risk of the heart is greatly reduced.

Disclosure of Invention

The technical scheme of the invention aims at the technical problem that the prior art is too single, provides a solution which is obviously different from the prior art, and particularly mainly provides a guide needle capable of breaking wire, which is used for solving the technical problems that at least two persons are required to cooperate in the process of using the guide needle to pull a wire rod in the prior art, the tissue injury is aggravated, the time consumption is increased in an urgent or complex medical operation scene, and the operation rhythm is influenced.

The technical scheme adopted for solving the technical problems is as follows:

The utility model provides a can broken wire guide needle, includes guide structure, guide structure includes the needle body and is located the cap body of needle body tail end, and the inside cavity of needle body, both ends opening, be provided with the connector in the needle body, be detachable connection between connector and the needle body, still be provided with the secant subassembly in the needle body, the secant subassembly includes the cutting part, and annular channel between cutting part and the needle body is the lead wire passageway, is provided with the wire rod in the lead wire passageway, is provided with the adapting unit on the inner wall that is close to needle body pointed end one side, the cutting part includes body, screw thread post and cutting end, and the cutting end is pressed the wire rod on the adapting unit and is cut off.

Preferably, a knob is arranged at one end of the cutting member, and the knob is connected with the cutting member through a bolt.

Preferably, the tail end of the needle body is provided with a first threaded part, and the first threaded part is in threaded connection with the cap body.

Preferably, a second threaded portion is arranged on the inner wall of the connector, and the second threaded portion is in threaded connection with the threaded column.

Preferably, a limiting part is arranged on one side of the outer wall of the needle body, a through hole is arranged on one side close to the limiting part, and one end of the wire rod penetrates through the through hole.

Preferably, an annular groove is formed in the flanging position on one side of the cap body, an anti-slip pad is arranged in the annular groove, and the anti-slip pad presses the wire rod on the limiting part for positioning.

Compared with the prior art, the invention has the beneficial effects that:

(1) According to the invention, through the arrangement of the needle body, the receiving part, the through hole, the connector, the cap body, the wire rod, the cutting part, the pipe body, the threaded column, the cutting end, the knob and the lead channel, the operation that a main operator can cut the wire rod without expanding a tissue opening to expose the wire rod and one person can be completed in the operation process by using the guide needle is realized, the tissue trauma can be reduced, the time spent by communication and handover links is reduced, the cooperation of an assistant is not required, and the operation can be immediately executed, so that the operation rhythm is quickened, for example, the wire rod is required to be separated from the wire rod in the process of placing the wire rod in deep tissues, the wire rod is required to be replaced and damaged in the vicinity, the operation can be continued only by taking out the guide needle after the wire rod is cut off by expanding the tissue opening, the tissue damage is prolonged, the burden of a patient is increased, and the guide needle or the wire rod is exposed to the air or the guide needle is repeatedly touched by gloves, so that the infection risk is increased.

(2) The application realizes that cutting can be carried out at the position of the needle point in medical operation through the needle body, the receiving part, the tube body, the threaded column, the cutting end, the knob and the lead channel, so as to accurately control the length of the lead wire, ensure the accuracy of the cutting position, and cut at the most proper position, avoid error, and when the traditional tool is used for cutting, the peripheral tissue is easily damaged due to factors such as shaking and misoperation of the tool, especially when the deep tissue or the tiny blood vessel in the body is used for operation, the application can complete cutting under the condition of reducing the interference to the peripheral tissue as much as possible, and can avoid serious complications such as nerve injury or vascular rupture caused by accidental touch of the manual cutting tool.

(3) According to the invention, through the first thread part, the limiting part, the second thread part, the annular groove and the anti-slip pad, the rapid assembly among the needle body, the connector, the cap body and the thread cutting assembly is realized, when a certain part of the guide needle is damaged or fails, only the part with a problem needs to be replaced by the design of rapid assembly, the whole guide needle does not need to be abandoned, and the medical cost and the resource waste are effectively reduced.

The invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is an exploded view of the overall structure of the present invention;

Fig. 3 is a schematic cross-sectional view of the inner structure of the needle body of the present invention.

1, A guiding structure, 11, a needle body, 111, a first threaded part, 112, a limiting part, 113, a receiving part, 114, a through hole, 13, a connector, 131, a second threaded part, 14, a cap body, 141, an annular groove, 15, an anti-slip pad, 2, a wire rod, 3, a thread cutting component, 31, a cutting piece, 311, a pipe body, 312, a threaded column, 313, a cutting end, 32, a knob, 4 and a lead channel.

Detailed Description

In order that the invention may be more fully understood, a more particular description of the invention will be rendered by reference to the appended drawings, in which several embodiments of the invention are illustrated, but which may be embodied in different forms and are not limited to the embodiments described herein, which are, on the contrary, provided to provide a more thorough and complete disclosure of the invention.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly connected to one of ordinary skill in the art to which this invention belongs, and the knowledge of terms used in the description of this invention herein for the purpose of describing particular embodiments is not intended to limit the invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, a guide needle capable of breaking wire is disclosed, and comprises a guide structure 1, wherein the guide structure 1 comprises a needle body 11 and a cap body 14 positioned at the tail end of the needle body 11, the interior of the needle body 11 is hollow, two ends of the needle body are open, a connector 13 is arranged in the needle body 11, the connector 13 is detachably connected with the needle body 11, a wire cutting assembly 3 is further arranged in the needle body 11, the wire cutting assembly 3 comprises a cutting piece 31, an annular channel between the cutting piece 31 and the needle body 11 is a wire leading channel 4, a wire rod 2 is arranged in the wire leading channel 4, a bearing part 113 is arranged on the inner wall close to one side of the tip of the needle body 11, the cutting piece 31 comprises a tube body 311, a threaded column 312 and a cutting end 313, and the cutting end 313 presses the wire rod 2 on the bearing part 113 and cuts off.

Through the structure, the operation of cutting off the guide wire by one person of a main operation doctor in the operation process by using the guide needle is realized, the time spent in the communication and handover links can be reduced, and the cooperation of an assistant is not required, so that the operation rhythm is quickened, the extra bacterial pollution possibly brought by the assistant is reduced, the aseptic state of an operation area is maintained to the greatest extent in an operation environment with extremely high aseptic operation requirement, the structure is simple, the operation is convenient, and a proper cutting point can be selected according to the requirement.

The specific operation is as follows, firstly, the wire 2 is passed through the through hole 114, so that the front end of the wire 2 enters the lead channel 4 until the front end of the wire 2 protrudes from the front end of the needle 11, then the wire can be normally used, when the wire 2 needs to be cut, the knob 32 is twisted, then the cutting member 31 is driven to approach to the bearing part 113 side of the needle 11, part of the wire 2 is pressed on the bearing part 113, the wire 2 can be cut off along with the rotation and cutting of the cutting end 313, and if the tail end of the wire 2 needs to be fixed, the cap 14 can be rotated, so that the anti-slip pad 15 on the cap 14 presses the wire 2 on the limiting part 112.

In the second embodiment, please refer to fig. 2 and 3, one end of the cutting member 31 is provided with a knob 32, and the knob 32 and the cutting member 31 are connected by a bolt, the provision of a force point is achieved by the knob 32, a medical staff can twist the cutting member 31 to cut the wire 2 conveniently, the tail end of the needle 11 is provided with a first threaded portion 111, the first threaded portion 111 is connected with the cap 14 by a thread, the needle 11 tail end can be protected by the cap 14, the inner wall of the connector 13 is provided with a second threaded portion 131, the second threaded portion 131 is connected with a threaded post 312 by a thread, so that the cutting member 31 rotates to cut, one side of the outer wall of the needle 11 is provided with a limit portion 112, one side close to the limit portion 112 is provided with a through hole 114, one end of the wire 2 passes through the through hole 114, the wire 2 is led into the lead channel 4 by the design of the through hole 114, the position of one side of the cap 14 is provided with an annular groove 141, the annular groove 141 is internally provided with an anti-slip pad 15, and the wire 2 is pressed down on the limit portion 112 by the limit pad 15, and the wire 2 is pressed down by the limit portion 112.

While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the embodiments described above, but is intended to be within the scope of the invention, as long as such insubstantial modifications are made by the method concepts and technical solutions of the invention, or the concepts and technical solutions of the invention are applied directly to other occasions without any modifications.

Claims (5)

1. A guide needle with a breakable thread, comprising a guide structure (1), wherein the guide structure (1) comprises a needle body (11) and a cap body (14) located at the tail end of the needle body (11), and the needle body (11) is hollow inside and open at both ends, characterized in that a connector (13) is provided in the needle body (11), and the connector (13) and the needle body (11) are detachably connected, and a cutting thread assembly (3) is also provided in the needle body (11), and the cutting thread assembly (3) is ) includes a cutting piece (31), an annular channel between the cutting piece (31) and the needle body (11) is a guide wire channel (4), a wire (2) is arranged in the guide wire channel (4), a receiving portion (113) is arranged on the inner wall near the tip of the needle body (11), the cutting piece (31) includes a tube (311), a threaded column (312) and a cutting end (313), and the cutting end (313) presses the wire (2) onto the receiving portion (113) and cuts it; A limiting portion (112) is provided on one side of the outer wall of the needle body (11), a through hole (114) is provided on a side close to the limiting portion (112), and one end of the wire (2) passes through the through hole (114). 2. A breakable wire guide needle according to claim 1, characterized in that a knob (32) is provided at one end of the cutting piece (31), and the knob (32) and the cutting piece (31) are connected by a bolt. 3. A breakable thread guide needle according to claim 1, characterized in that a first threaded portion (111) is provided at the tail end of the needle body (11), and the first threaded portion (111) and the cap body (14) are threadedly connected. 4. A breakable thread guide needle according to claim 1, characterized in that a second threaded portion (131) is provided on the inner wall of the connector (13), and the second threaded portion (131) is threadedly connected to the threaded column (312). 5. A breakable wire guide needle according to claim 3, characterized in that an annular groove (141) is provided at the folded edge position on one side of the cap body (14), an anti-slip pad (15) is provided in the annular groove (141), and the anti-slip pad (15) presses the wire (2) onto the limiting portion (112) for positioning.