Operation guiding needle

Abstract

The utility model provides an operation guiding needle, and relates to the technical field of medical instruments. The operation guide needle comprises a needle tube and a needle head arranged at one end of the needle tube, the needle head is provided with at least two guide wire channels, and each guide wire channel is communicated with the needle tube. When the operation guide needle is used, one guide wire penetrates through one guide wire channel and then enters the needle tube, the other guide wire can be aligned to the other guide wire channel without detaching the guide needle, compared with a traditional guide needle with a single channel, the operation guide needle does not need to be frequently detached from the previous guide wire and then replaced with the other guide wire, and the operation is convenient. Therefore, the surgical operation process can be simplified in interventional therapy of complex lesions, and the surgical efficiency and the surgical safety are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a surgical guide needle. Background Art

[0002] The surgical guide needle is a widely used medical device. The following is an example of vascular interventional surgery. Vascular interventional surgery is a surgical method in which an interventional doctor operates interventional instruments such as catheters and guidewires under the guidance of medical imaging equipment, delivers the designated instruments along the human vascular pathway to the corresponding lesion site through percutaneous puncture, and performs treatment. As a minimally invasive treatment method, vascular interventional surgery has been widely used in the interventional treatment of cardiovascular diseases, cerebrovascular diseases, peripheral vascular diseases, and tumors.

[0003] Because the tip of the guidewire is soft and is shaped into a specific shape before the operation, the guidewire tip must be assisted by a guide needle when passing through the Y-valve entrance and into the catheter, otherwise it will not be able to pass through the Y-valve entrance smoothly or the shape of the guidewire tip will be damaged. In addition, since the Y-valve usually uses silicone material to seal the valve mouth to prevent blood leakage, in order to avoid adding additional resistance to the guidewire delivery process and thus affecting the tactile feedback of the guidewire tip, the guide needle will be kept at the Y-valve mouth when delivering the guidewire during surgery.

[0004] The guidewire guide needles currently used in vascular interventional surgery are all single-guidewire guide needles, while in the interventional treatment of complex vascular lesions, two or more guidewires are often used, and multiple guidewires will be operated alternately and cooperatively. When using the existing single-guidewire guide needle, only one guidewire can be sent into the catheter with the help of the single-guidewire guide needle, and the guide needle is kept at the Y-valve port to deliver the tip of the first guidewire to the designated position of the blood vessel; at this time, if the second guidewire is to be delivered, it is necessary to first remove the guide needle from the first guidewire, and then send the second guidewire into the Y-valve along the guide needle, and leave the guide needle in the Y-valve as a passage for the second guidewire to avoid friction between the second guidewire and the silicone sealing ring at the Y-valve port.

[0005] The current single-guidewire introducer needle cannot meet the needs of multi-guidewire treatment of complex vascular lesions and has the following problems: ① The single-guidewire introducer needle needs to be removed from the first guidewire to serve as the introducer needle for the second guidewire. The surgical operation is cumbersome and the position of the first guidewire may be accidentally moved during this process, bringing surgical risks; ② If the first guidewire and the second guidewire need to be operated alternately, the introducer needle needs to be repeatedly replaced between the guidewires. Otherwise, tactile feedback from the tip of a certain guidewire cannot be obtained, which directly affects the feel of the interventional physician during guidewire operation and reduces surgical efficiency and safety. Utility Model Content

[0006] The utility model provides a surgical guide needle, which is used to solve the defect in the prior art that a single guide wire guide needle needs to be repeatedly inserted and pulled out during a multi-guide wire interventional surgery, resulting in a cumbersome surgical procedure and potential safety issues.

[0007] The utility model provides a surgical guide needle, comprising a needle tube and a needle head arranged at one end of the needle tube, wherein the needle head is provided with at least two guide wire channels, and each of the guide wire channels is communicated with the needle tube.

[0008] According to a surgical guide needle provided by the utility model, the transverse cross-sectional area of ​​the guide wire channel gradually decreases from the inlet end to the outlet end of the guide wire channel.

[0009] According to a surgical guide needle provided by the utility model, the guide wire channel is in a frustum shape.

[0010] According to a surgical guide needle provided by the utility model, the needle head is also provided with a transition hole extending along the axial direction of the needle tube, one end of the transition hole is connected to the needle tube, and the other end of the transition hole is connected to the outlet end of the guide wire channel.

[0011] According to a surgical guide needle provided by the utility model, a step hole communicating with the guide wire channel is provided in the needle head, the small diameter section of the step hole serves as the transition hole, and the needle tube is inserted into the large diameter section of the step hole.

[0012] According to a surgical guide needle provided by the utility model, there is a partition between two adjacent guide wire channels, and the length of the partition is less than the longitudinal length of the guide wire channel. According to a surgical guide needle provided by the utility model, the thickness of the partition gradually decreases from the inlet end of the guide wire channel to the outlet end of the guide wire channel.

[0013] According to a surgical guide needle provided by the utility model, the number of the guide wire channels is two or three.

[0014] According to a surgical guide needle provided by the utility model, the needle head is integrally formed to form a plurality of guide wire channels.

[0015] According to a surgical guide needle provided by the utility model, a plurality of sub-pipelines are arranged in the needle tube, and the plurality of sub-pipelines are arranged in one-to-one correspondence with at least two guide wire channels.

[0016] The surgical guide needle provided by the utility model has at least two guide wire channels in the needle head, and has the function of providing guidance for two or more guide wires. Compared with the traditional single-channel guide needle, there is no need to replace the guide needle between guide wires, which effectively solves the problem of repeated replacement of the guide needle and ensures that the interventional doctor can directly obtain tactile feedback when operating each guide wire, and can also smoothly withdraw the guide needle when two or more guide wires are used, which greatly ensures the safety of the operation and improves the efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a stereoscopic diagram of the surgical guide needle provided by the utility model;

[0019] Figure 2 yes Figure 1 A cross-sectional view of a surgical guide needle is shown;

[0020] Figure 3 It is a three-dimensional diagram of another surgical guide needle provided by the utility model;

[0021] Figure 4 yes Figure 3 A partial cross-sectional view of a surgical introducer needle is shown.

[0022] Reference numerals:

[0023] 10. Needle; 11. Guide wire channel; 12. Limiting edge; 13. Transition hole; 14. Partition; 20. Needle tube. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The term "first" or "second" in the specification and claims of the utility model may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the related objects are in an "or" relationship.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Combine the following Figure 1-Figure 4 The utility model describes a surgical guide needle.

[0029] The utility model provides a surgical guide needle, such as Figure 1 and Figure 3 As shown, the surgical guide needle includes a needle tube 20 and a needle head 10 disposed at one end of the needle tube 20. Figure 2 and Figure 4 As shown, the needle 10 is provided with at least two guide wire channels 11 , and each guide wire channel 11 is communicated with the needle tube 20 .

[0030] The needle tube 20 is a metal tube, and the needle 10 is sleeved on one end of the needle tube 20. Figure 2 As shown, the end of the needle 10 away from the needle tube 20 has a limiting edge 12, which is arranged around the circumference of the needle 10 or arranged at intervals around the circumference. When the surgical guide needle is inserted into the medical device, the limiting edge 12 can abut against the end of the medical device to form a limit.

[0031] The guide wire channel 11 is used to guide the guide wire into the surgical guide needle. The number of the guide wire channels 11 is two, three or more, and each guide wire channel 11 is for a guide wire to pass through. Preferably, the number of the guide wire channels 11 is two or three to prevent the size of the needle 10 from being too large. Figure 2 As shown, two guide wire channels 11 are provided on the left and right sides of the needle 10. Figure 3 As shown, the needle 10 is provided with three guide wire channels 11, and the center points of the entrance ends of the three guide wire channels 11 are connected to form a triangle.

[0032] When in use, a guide wire passes through one of the guide wire channels 11 and enters the interior of the needle tube 20, and another guide wire can be aligned with the other guide wire channel 11 without removing the guide needle. Compared with the traditional single-channel guide needle, the surgical guide needle provided by the embodiment of the utility model does not need to be frequently removed from the previous guide wire and replaced with another guide wire during use, thereby simplifying the surgical operation process and reducing the difficulty of the operation.

[0033] From the inlet end to the outlet end of the guide wire channel 11, the transverse cross-sectional area of ​​the guide wire channel 11 gradually decreases. Figure 2 As shown, the guide wire channel 11 is in a frustum shape, so that the guide wire can be guided by the inclined inner wall of the guide wire channel 11, so that the guide wire can smoothly enter the thinner needle tube 20 from the thicker entrance end. Among them, the outer wall of the needle 10 can be an inclined surface or a vertical surface from top to bottom.

[0034] like Figure 2 and Figure 4 As shown, the needle 10 has a transition hole 13, and the hole axis of the transition hole 13 coincides with the axis of the needle tube 20. One end of the transition hole 13 is connected to the needle tube 20, and the other end of the transition hole 13 is connected to the guide wire channel 11. The transverse cross-sectional area of ​​the guide wire channel 11 gradually decreases from top to bottom, and the channel wall of the entire guide wire channel 11 is inclined relative to the vertical direction, while the needle tube 20 extends in the vertical direction. In order to facilitate the guide wire to enter the needle tube 20 from the guide wire channel 11, a transition hole 13 along the vertical direction is provided between the needle tube 20 and the guide wire channel 11.

[0035] When in use, the guide wire obliquely penetrates the guide wire channel 11 and enters the transition hole 13 downward along the guide wire channel 11. With the help of adjustment of the transition hole 13, the guide wire passes through the needle 10 in a generally vertical direction, so that it can accurately enter the needle tube 20.

[0036] Preferably, a stepped hole connected to the guide wire channel 11 is provided in the needle head 10, and the small diameter section of the stepped hole serves as a transition hole 13, and the needle tube 20 is inserted into the large diameter section of the stepped hole. That is, the inner diameter of the transition hole 13 is smaller than the inner diameter of the needle tube 20, so that the bleeding during the operation is effectively sealed by the transition hole 13 to reduce the amount of bleeding.

[0037] The large diameter section of the stepped hole is located at the end where the needle 10 is connected to the needle tube 20. After the guide wire passes through the guide wire channel 11, it first enters the thinner transition section for guide wire direction adjustment, and then smoothly enters the thicker needle tube 20 end under the push of external force.

[0038] In one embodiment, specifically, the needle 10 is integrally formed by injection molding or 3D printing, and a plurality of guide wire channels 11 are directly formed. The channel wall shared between two adjacent guide wire channels 11 is used as a partition 14. In another embodiment, the needle 10 is provided with a guide wire through hole, and the partition 14 is independent of the needle 10 and installed in the guide wire through hole, dividing the guide wire through hole into a plurality of guide wire channels 11. For example, the partition 14 is removably inserted in the needle 10. Specifically, the inner wall of the needle 10 is provided with a card slot, and the partition 14 is removably installed in the card slot. When only a single guide wire is needed, one of the guide wire channels 11 can be selected for use, or the partition 14 can be pulled out of the card slot, and the guide wire through hole can be directly used as the guide wire threading path to increase the entrance size of the guide wire. For another example, the partition 14 can slide or rotate relative to the needle 10. When in use, after the first guide wire passes through the surgical guide needle, the partition 14 is slid toward the side where the first guide wire is located to increase the size of the other guide wire channels 11, and then the second guide wire is inserted. Specifically, a cross bar is fixedly installed at the entrance end of the needle 10, and the top of the partition 14 is rotatably installed on the cross bar. The channel size inside the guide wire channel 11 is adjusted by rotating the partition 14 through external force.

[0039] like Figure 2 As shown, the length of the partition 14 is less than the axial length of the guidewire channel 11, so that at least two guidewire channels 11 are connected at the outlet end of the guidewire channel 11. It should be noted that the outlet end of the guidewire channel 11 refers to the end where the guidewire passes through the guidewire channel 11 when in use; the inlet end of the guidewire channel 11 is opposite to the outlet end.

[0040] Among them, the top of the partition 14 is flush with the inlet end of the guidewire channel 11, which is convenient for medical staff to confirm the selected guidewire channel 11. Of course, the top of the partition 14 can also be slightly lower than the inlet end of the guidewire channel 11. The bottom of the partition 14 is spaced from the outlet end of the guidewire channel 11, so that multiple guidewire channels 11 are directly connected at the outlet end of the guidewire channel 11.

[0041] It should be noted that the length of the partition 14 may also be greater than the longitudinal length of the guidewire channel 11 , and the length of the partition 14 being less than the longitudinal length of the guidewire channel 11 is only an example.

[0042] Optionally, the partition 14 is a plate with uniform thickness. Figure 2 As shown, the thickness of the partition 14 gradually decreases from the inlet end of the guide wire channel 11 to the outlet end of the guide wire channel 11, thereby facilitating the passage of the guide wire. Figure 2As shown in FIG. 1 , the longitudinal cross section of the partition 14 is an isosceles triangle. Of course, the longitudinal cross section of the partition 14 can also be a trapezoid or other shapes. It can be understood that the opposite sides of the longitudinal cross section of the partition 14 can be either straight lines or curves, as long as they are in accordance with Figure 2 The thickness of the partition 14 can be gradually reduced from top to bottom. The longitudinal cross section of the partition 14 refers to the figure obtained by cutting the partition 14 parallel to the axial direction of the needle tube 20.

[0043] In an optional embodiment, the needle tube 20 has a plurality of sub-pipelines, and the plurality of sub-pipelines are arranged one-to-one with at least two guide wire channels 11. Specifically, a plate body is arranged in the needle tube 20, and the plate body divides the needle tube 20 into a plurality of sub-pipelines. In another optional embodiment, the needle tube 20 has only one through-pipeline, and a plurality of guide wires enter the pipe from different guide wire channels 11, thereby avoiding the increase in the size of the needle tube 20 due to the plate body arranged in the needle tube 20.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A surgical guide needle, It is characterized in that It comprises a needle tube and a needle head arranged at one end of the needle tube, wherein the needle head is provided with at least two guide wire channels, each of which is connected to the needle tube, and the transverse cross-sectional area of ​​the guide wire channel gradually decreases from the inlet end to the outlet end.

2. The surgical guide needle according to claim 1, It is characterized in that The guide wire channel is in a frustum shape.

3. The surgical guide needle according to claim 1, It is characterized in that The needle head is also provided with a transition hole extending along the axial direction of the needle tube, one end of the transition hole is communicated with the needle tube, and the other end of the transition hole is communicated with the outlet end of the guide wire channel.

4. The surgical guide needle according to claim 3, It is characterized in that A stepped hole communicating with the guide wire channel is arranged in the needle head, the small diameter section of the stepped hole serves as the transition hole, and the needle tube is plugged into the large diameter section of the stepped hole.

5. The surgical guide needle according to claim 1, It is characterized in that A partition is provided between two adjacent guide wire channels, and the length of the partition is smaller than the longitudinal length of the guide wire channel.

6. The surgical guide needle according to claim 5, It is characterized in that The thickness of the partition gradually decreases from the inlet end of the guide wire channel to the outlet end of the guide wire channel.

7. The surgical guide needle according to claim 1, It is characterized in that The number of the guide wire channels is two or three.

8. The surgical guide needle according to claim 1, It is characterized in that The needle is integrally formed to form a plurality of guide wire channels.

9. The surgical guide needle according to claim 1, It is characterized in that The needle tube has a plurality of sub-pipelines therein, and the plurality of sub-pipelines are arranged in one-to-one correspondence with at least two guide wire channels.

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