Guider puncture needle structure

Abstract

The utility model relates to a puncture needle structure of a guider, which is applied to the technical field of medical instruments and comprises a pagoda head, a puncture needle and a needle cap, and the needle cap is arranged at the tail of the puncture needle. When the puncture needle is used, the puncture needle penetrates into the movable hole, the clamping strip is aligned with the passing groove, then the connecting end is inserted into the movable groove until the end face of the connecting end reaches the bottom of the movable groove, the clamping strip reaches the clamping groove, the connecting end is rotated, the clamping strip enters the clamping groove, the needle cap is clamped on the pagoda head, and fixation of the puncture needle is completed. The puncture needle does not move relative to the guider; and the use convenience of doctors is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a guide puncture needle structure. Background Technology

[0002] Neurosurgery is a branch of surgery that, based on surgery as the primary treatment method, applies unique neurosurgical research methods to study the human nervous system, such as the brain, spinal cord, and peripheral nervous system, as well as related accessory structures such as the skull, scalp, cerebral blood vessels, and meninges. It investigates the causes and pathogenesis of diseases such as epilepsy, Parkinson's disease, and neuralgia, and explores new diagnostic, treatment, and preventive technologies.

[0003] Puncture needles are commonly used medical instruments in neurosurgery, used to puncture organs or tissues. When used in conjunction with other medical devices, puncture needles can directly reach the pain point and relieve patient pain, making them an indispensable medical device in hospitals. However, in current technology, when puncture needles are used in conjunction with guides during neurosurgery, after the needle is inserted into the channel within the guide, the surgeon needs to simultaneously hold both the needle and the guide to ensure stability, increasing the difficulty and inconvenience of the procedure.

[0004] In view of this, there is an urgent need for a guide needle structure to solve the above problems. Utility Model Content

[0005] In order to help solve the problems existing in the prior art, the present invention provides a guide puncture needle structure, which adopts the following technical solution, including: a pagoda head, a puncture needle, and a needle cap, wherein the needle cap is disposed at the tail of the puncture needle;

[0006] The needle cap has a movable groove extending along the axial direction of the puncture needle at one end near the puncture needle. The movable groove is cylindrical, and a retaining groove is provided circumferentially at the bottom of the movable groove. A through groove is provided on the circumferential side of the movable groove, and the through groove extends from the end face of the needle cap near the puncture needle to the retaining groove.

[0007] One end of the pagoda head is the mounting end, and the other end is the connecting end. The mounting end is set on the guide. The pagoda head has a through-hole that extends from the connecting end to the mounting end. A retaining strip is provided on the circumferential side of the connecting end. The distance from the outer side of the retaining strip to the axis of the pagoda head is greater than the distance from the outer side of the movable groove to the axis of the movable groove. The distance from the outer side of the retaining strip to the axis of the pagoda head is less than the distance from the farthest side of the groove to the axis of the movable groove.

[0008] The card strip is arc-shaped.

[0009] Two card strips are provided, and the two card strips are arranged opposite each other on the ring side of the connecting end. Two through slots are provided, and the two through slots are arranged opposite each other in the circumferential direction of the movable slot.

[0010] There are two card slots, which extend circumferentially from the through slot to the movable slot.

[0011] The card slot is connected to one of the slots.

[0012] The slot extends to the outside of the needle cap.

[0013] The movable groove is coaxially formed on the needle cap.

[0014] The bottom of the movable groove is coaxially provided with a positioning hole, and one end of the puncture needle is positioned at the positioning hole.

[0015] The connecting end is cylindrical.

[0016] The outer diameter of the connecting end is adapted to the diameter of the movable groove.

[0017] The above-described structure of this utility model can achieve the following beneficial effects:

[0018] When using the puncture needle, insert the puncture needle into the movable hole, align the retaining strip with the through groove, and then insert the connecting end into the movable groove until the end face of the connecting end reaches the bottom of the movable groove. At this point, the retaining strip reaches the retaining groove. Rotate the connecting end to allow the retaining strip to enter the retaining groove. At this point, the needle cap is locked onto the pagoda head, completing the fixation of the puncture needle. During the operation, the puncture needle will not move relative to the guide, thus improving the convenience for doctors. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of an embodiment;

[0020] Figure 2 This is a schematic diagram of the pagoda head structure in the embodiment;

[0021] Figure 3 This is a structural schematic diagram from another perspective of the embodiment;

[0022] Figure 4 This is a schematic cross-sectional view of the needle cap in the embodiment.

[0023] Reference numerals: 100, pagoda head; 110, movable hole; 120, retaining strip; 200, puncture needle; 300, needle cap; 310, movable groove; 320, retaining groove; 330, through groove; 340, positioning hole. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0025] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.

[0026] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0027] Reference Figure 1 and Figure 2 A guide puncture needle structure includes: a pagoda head 100, a puncture needle 200, and a needle cap 300, wherein the needle cap 300 is disposed at the tail of the puncture needle 200;

[0028] The needle cap 300 has a movable groove 310 extending along the axial direction of the puncture needle 200 at one end near the puncture needle 200. The movable groove 310 is cylindrical. A retaining groove 320 is provided circumferentially at the bottom of the movable groove 310. A through groove 330 is provided on the circumferential side of the movable groove 310. The through groove 330 extends from the end face of the needle cap 300 near the puncture needle 200 to the retaining groove 320.

[0029] One end of the pagoda head 100 is the mounting end, and the other end is the connecting end. The mounting end is set on the guide. The pagoda head 100 has a through-hole 110 that extends from the connecting end to the mounting end. A retaining strip 120 is provided on the circumferential side of the connecting end. The distance from the outer side of the retaining strip 120 to the axis of the pagoda head 100 is greater than the distance from the outer side of the movable groove 310 to the axis of the movable groove 310. The distance from the outer side of the retaining strip 120 to the axis of the pagoda head 100 is less than the distance from the farthest side of the through groove 330 to the axis of the movable groove 310.

[0030] Based on the above structure, the pagoda head 100 is fixed on the guide during the production and assembly of the guide and is connected to the suction channel of the guide. When using the puncture needle 200, the puncture needle 200 is inserted into the movable hole 110, the retaining strip 120 is aligned with the through groove 330, and then the connecting end is inserted into the movable groove 310 until the end face of the connecting end reaches the bottom of the movable groove 310. At this time, the retaining strip 120 reaches the retaining groove 320. The connecting end is rotated so that the retaining strip 120 enters the retaining groove 320. At this time, the needle cap 300 is locked on the pagoda head 100, completing the fixation of the puncture needle 200. During the operation, the puncture needle 200 will not move relative to the guide, thus improving the convenience of use for doctors.

[0031] like Figure 2 As shown, to ensure the smooth movement of the retaining strip 120 within the needle cap 300, the retaining strip 120 is arc-shaped, and two retaining strips 120 can be provided. The two retaining strips 120 are positioned opposite each other on the circumferential side of the connecting end. Two through grooves 330 are provided, positioned opposite each other in the circumferential direction of the movable groove 310. Two retaining slots 320 are provided, extending circumferentially from the through grooves 330 to the movable groove 310 respectively. In this way, the two retaining strips 120 are respectively engaged in the two retaining slots 320, improving the stability of the fixation. Furthermore, the retaining slot 320 is connected to one of the through grooves 330, meaning that the retaining slot 320 is not connected to the other through groove 330. When the needle cap 300 and the pagoda head 100 can no longer rotate, the assembly can be completed (the distance between the retaining strip 120 and the other through groove is the closest) or the needle cap 300 and the pagoda head 100 can be separated (the retaining strip 120 and the through groove 330 are aligned).

[0032] Further optimizations include, for example Figure 3 As shown, the slot 320 extends to the outside of the pin cap 300, so that the position of the retaining strip 120 can be directly observed from the circumference of the pin cap 300, improving the convenience of disassembly and assembly.

[0033] A further optimization is that the movable groove 310 is coaxially formed on the needle cap 300, such as... Figure 4 As shown, a positioning hole 340 is coaxially provided at the bottom of the movable groove 310, and one end of the puncture needle 200 is located at the positioning hole 340. Thus, during installation, the tail of the puncture needle 200 can be directly inserted into the positioning hole 340 for fixation, which facilitates the positioning and installation of the puncture needle 200.

[0034] A further optimization is that the connecting end is cylindrical, and the outer diameter of the connecting end is adapted to the diameter of the movable groove 310. This makes it easier to insert the connecting end into the movable groove 310 and increases the sealing between the pagoda head 100 and the needle cap 300.

[0035] In summary, when using the puncture needle 200, insert the puncture needle 200 into the movable hole 110, align the retaining strip 120 with the through groove 330, and then insert the connecting end into the movable groove 310 until the end face of the connecting end reaches the bottom of the movable groove 310. At this time, the retaining strip 120 reaches the retaining groove 320. Rotate the connecting end to make the retaining strip 120 enter the retaining groove 320. At this time, the needle cap 300 is locked on the pagoda head 100, completing the fixation of the puncture needle 200. During the operation, the puncture needle 200 will not move relative to the guide, thus improving the convenience of use for doctors.

[0036] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A guide needle structure, characterized in that, include: The device comprises a pagoda-shaped head (100), a puncture needle (200), and a needle cap (300), wherein the needle cap (300) is disposed at the tail of the puncture needle (200); The needle cap (300) has a movable groove (310) extending along the axial direction of the puncture needle (200) at one end near the puncture needle (200). The movable groove (310) is cylindrical. A retaining groove (320) is provided circumferentially at the bottom of the movable groove (310). A through groove (330) is provided on the circumferential side of the movable groove (310). The through groove (330) extends from the end face of the needle cap (300) near the puncture needle (200) to the retaining groove (320). One end of the pagoda head (100) is the mounting end, and the other end is the connecting end. The mounting end is set on the guide. The pagoda head (100) has a through-hole (110) that extends from the connecting end to the mounting end. A retaining strip (120) is provided on the circumferential side of the connecting end. The distance from the outer side of the retaining strip (120) to the axis of the pagoda head (100) is greater than the distance from the outer side of the movable groove (310) to the axis of the movable groove (310). The distance from the outer side of the retaining strip (120) to the axis of the pagoda head (100) is less than the distance from the farthest side of the groove (330) to the axis of the movable groove (310).

2. The guide puncture needle structure according to claim 1, characterized in that: The card strip (120) is arc-shaped.

3. The guide puncture needle structure according to claim 1, characterized in that: Two card strips (120) are provided, and the two card strips (120) are arranged opposite to each other on the ring side of the connecting end. Two through slots (330) are provided, and the two through slots (330) are arranged opposite to each other in the circumferential direction of the movable slot (310).

4. The guide puncture needle structure according to claim 3, characterized in that: There are two slots (320), which extend circumferentially from the through slot (330) to the movable slot (310).

5. The guide puncture needle structure according to claim 4, characterized in that: The slot (320) is in communication with one of the through slots (330).

6. The guide puncture needle structure according to claim 5, characterized in that: The slot (320) extends to the outside of the needle cap (300).

7. The guide puncture needle structure according to claim 1, characterized in that: The movable groove (310) is coaxially formed on the needle cap (300).

8. The guide puncture needle structure according to claim 7, characterized in that: The bottom of the movable groove (310) is coaxially provided with a positioning hole (340), and one end of the puncture needle (200) is located at the positioning hole (340).

9. The guide puncture needle structure according to claim 8, characterized in that: The connecting end is cylindrical.

10. The guide puncture needle structure according to claim 9, characterized in that: The outer diameter of the connecting end is adapted to the diameter of the movable groove (310).

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