Puncture guide needle

Abstract

The present application provides a kind of puncture guide needle, including needle cover, needle seat assembly, first spring and support, the inside of needle cover is equipped with needle seat assembly and first spring, one end of needle cover is detachably connected with support, needle cover is equipped with first clamping structure, first clamping structure is connected with pressing portion, and pressing portion is located outside needle cover, needle seat assembly is equipped with second clamping structure, second clamping structure is engaged with first clamping structure, and one end of needle seat assembly close to support is equipped with needle tube, first spring is clamped between needle cover and one end of needle seat assembly away from support, first spring is suitable for being in compression state, support is equipped with corresponding puncture hole with needle tube, and puncture hole is used for needle tube to extend out;When pressing pressing portion, pressing portion drives first clamping structure away from second clamping structure, and first spring drives needle tube to stab into human body and insert chip into human body.Therefore, puncture guide needle can automatically complete the operation of chip implantation in human body, and it is convenient and fast to use, and it can be operated without doctor.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a puncture guide needle. Background Technology

[0002] With the advancement of medicine, humanity has mastered many medical techniques, one of which is the human microchip (hereinafter referred to as a chip). The human microchip records personal data, which can be displayed using specific machines. It can provide information such as medical history and allergy history, enabling timely handling of emergencies and avoiding diagnostic errors; it can also monitor the body's health status, promptly reporting situations to hospitals and other emergency units; and monitor the functioning of transplanted organs, among other things.

[0003] However, currently, doctors still rely on using a scalpel to cut open the skin tissue and implant the chip into the human body. The implantation process is complicated and takes up a lot of the doctor's time. Summary of the Invention

[0004] The problem solved by this invention is how to conveniently and quickly implant a chip into the human body, saving doctors' time.

[0005] To address the aforementioned problems, the present invention provides a puncture guide needle, comprising a needle sheath, a needle hub assembly, a first spring, and a support. The needle sheath contains the needle hub assembly and the first spring. One end of the needle sheath is detachably connected to the support. The needle sheath has a first locking structure connected to a pressing part located outside the needle sheath. The needle hub assembly has a second locking structure engaged with the first locking structure. A needle tube is provided at the end of the needle hub assembly near the support. The first spring is sandwiched between the needle sheath and the end of the needle hub assembly away from the support, and is adapted to be in a compressed state. The support has a puncture hole corresponding to the needle tube, which allows the needle tube to extend. When the pressing part is pressed, the pressing part drives the first locking structure away from the second locking structure.

[0006] The technical advantages of this invention are as follows: When the chip is implanted into the human body using the puncture guide needle, the chip holder can be first installed on the end of the needle holder assembly near the support, and the chip can be installed inside the needle tube. Then, the support is placed on the surface of the human skin, and the pressing part is pressed to disengage the first locking structure from the second locking structure, activating the first spring. The first spring drives the needle holder assembly to move towards the support, causing the needle tube to extend from the insertion hole and pierce the human body, inserting the chip into the human body. Finally, the needle sheath is removed from the support, the chip holder is installed on the support, the needle tube is withdrawn from the human body, and the chip remains inside the human body. Therefore, the puncture guide needle described above can automatically complete the chip implantation procedure, which is convenient and quick to use, and can even be operated without a doctor.

[0007] Furthermore, the needle hub assembly includes a slider, a needle hub, and a second spring. One end of the slider contacts the first spring, and the needle hub is engaged with the end of the slider away from the bracket. The needle tube is installed in the needle hub and passes through the slider. The second spring is disposed inside the needle hub and is sandwiched between the needle hub and the slider, and is adapted to be in a compressed state. The end of the slider near the bracket is provided with a first trigger structure, and the end of the bracket near the slider is provided with a second trigger structure. When the needle tube extends outside the needle sleeve, the first trigger structure contacts the second trigger structure, causing the slider and the needle hub to disengage from the engagement connection, and the second spring drives the needle tube to retract into the needle sleeve.

[0008] Furthermore, the slider is provided with a first limiting protrusion, the needle seat is provided with a second limiting protrusion, and the first limiting protrusion abuts against the end of the second limiting protrusion away from the bracket. The first triggering structure includes a triggering protrusion that protrudes toward the bracket. The second triggering structure includes a triggering ramp that extends obliquely toward the slider. When the needle tube extends out of the needle sheath, the triggering protrusion moves along the triggering ramp, and the triggering protrusion drives the slider to rotate.

[0009] Furthermore, the end of the trigger bump facing the trigger ramp has an inclined surface, and the inclined surface and the trigger ramp are used to fit together.

[0010] Furthermore, the end of the slider away from the bracket has a first annular protrusion and a second annular protrusion, the second annular protrusion being located inside the first annular protrusion, the first annular protrusion and the second annular protrusion being spaced apart, the needle seat being inserted between the first annular protrusion and the second annular protrusion, and the needle tube being inserted inside the second annular protrusion and used to extend out from the slider.

[0011] Furthermore, the first snap-fit ​​structure includes a connecting part and a snap-fit ​​part. One end of the connecting part is connected to the outer wall of the needle sleeve, and the other end of the connecting part is connected to the snap-fit ​​part and the pressing part. The side wall of the needle sleeve is provided with a first hollow, and the snap-fit ​​part is used to extend into the first hollow and engage with the second snap-fit ​​structure.

[0012] Furthermore, the snap-fit ​​portion is provided with a snap-fit ​​groove, and the second snap-fit ​​structure includes a snap-fit ​​block. The snap-fit ​​block engages with the snap-fit ​​groove, and the first cutout extends toward the direction close to the bracket. The first cutout is used to allow the snap-fit ​​block to move.

[0013] Furthermore, the puncture guide needle also includes a limiting ring, which is sleeved on the outside of the needle sheath and is used to rotate around the needle sheath. The limiting ring is provided with a limiting block, which is located between the pressing part and the outer wall of the needle sheath and abuts against the pressing part.

[0014] Furthermore, a magnet is provided at one end of the bracket near the pin holder assembly, and the magnet is used to attract the chip holder.

[0015] Furthermore, the needle sheath has a boss structure at one end near the bracket, and the bracket has a narrow groove and a wide groove that are interconnected. The boss structure is used to insert into the wide groove and move along the wide groove to the narrow groove, so that the bracket is fixed to the needle sheath. Attached Figure Description

[0016] Figure 1 This is a perspective view of a puncture guide needle according to an embodiment of the present invention.

[0017] Figure 2 This is a perspective view of a puncture guide needle according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of a puncture guide needle according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the needle tube extending from the needle sheath according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the needle tube retracting into the needle sheath according to an embodiment of the present invention;

[0021] Figure 6 This is a three-dimensional structural diagram of the slider according to an embodiment of the present invention;

[0022] Figure 7 This is a three-dimensional structural diagram of the bracket according to an embodiment of the present invention;

[0023] Figure 8 This is a top view of the bracket according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Needle sheath; 11-First hollow; 2-Needle base assembly; 21-Slider; 211-First limiting protrusion; 212-Trigger protrusion; 213-First circular protrusion; 214-Second circular protrusion; 22-Needle base; 221-Second limiting protrusion; 23-Second spring; 3-First spring; 4-Bracket; 41-Piercing hole; 42-Trigger ramp; 43-Narrow groove rail; 44-Wide groove rail; 45-Magnet; 5-First snap-fit ​​structure; 51-Connecting part; 52-Snap-fit ​​part; 6-Second snap-fit ​​structure; 61-Snap block; 7-Pressing part; 8-Needle tube; 9-Limiting ring; 91-Limiting block; 10-Chip assembly. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0028] See Figures 1 to 4 As shown, a puncture guide needle according to an embodiment of the present invention includes a needle sleeve 1, a needle hub assembly 2, a first spring 3, and a bracket 4. The needle sleeve 1 has the needle hub assembly 2 and the first spring 3 inside. One end of the needle sleeve 1 is detachably connected to the bracket 4. The needle sleeve 1 has a first locking structure 5, which is connected to a pressing part 7 located outside the needle sleeve 1. The needle hub assembly 2 has a second locking structure 6, which engages with the first locking structure 5. The end of the needle hub assembly 2 near the bracket 4 has a needle tube 8. The first spring 3 is sandwiched between the end of the needle sleeve 1 and the end of the needle hub assembly 2 away from the bracket 4. The first spring 3 is adapted to be in a compressed state. The bracket 4 has a puncture hole 41 corresponding to the needle tube 8, which is used for the needle tube 8 to extend out. When the pressing part 7 is pressed, the pressing part 7 drives the first locking structure 5 away from the second locking structure 6.

[0029] Specifically, the needle sleeve 1 can be cylindrical, with one end closed and the other end open. The open end of the needle sleeve 1 is detachably connected to the bracket 4. In this embodiment, the needle sleeve 1 and the bracket 4 can be detachably connected by bolts or clips. In other embodiments, the needle sleeve 1 and the bracket 4 can also be detachably connected by other methods. In this embodiment, the first snap-fit ​​structure 5 can be located in the middle region of the needle sleeve 1. There can be two first snap-fit ​​structures 5, and the two first snap-fit ​​structures 5 are symmetrically arranged about the axis of the needle sleeve 1. In other embodiments, there can be other numbers of first snap-fit ​​structures 5, and the position of the first snap-fit ​​structure 5 on the needle sleeve 1 can also be adapted according to the actual situation.

[0030] The needle hub assembly 2 is movably disposed inside the needle sheath 1 and can move along the height direction of the needle sheath 1. In this embodiment, the needle hub assembly 2 may have two second locking structures 6, which are symmetrically arranged. In other embodiments, other numbers of second locking structures 6 may be provided, and the number of second locking structures 6 is equal to the number of first locking structures 5. When the first locking structure 5 and the second locking structure 6 are engaged, a puncture space is provided between the needle hub assembly 2 and the support 4. The puncture space allows the needle hub assembly 2 to move and accommodate the needle tube 8, thus preventing the needle tube 8 from accidentally injuring a person when the puncture guide needle is not in use.

[0031] The first spring 3 can be disposed inside the needle sleeve 1, and one end of the first spring 3 can contact the inner wall of the needle sleeve 1 facing the support 4, and the other end of the first spring 3 can contact the end of the needle seat assembly 2 away from the support 4. That is, the needle seat assembly 2 and the needle sleeve 1 clamp the first spring 3, so that the first spring 3 is in a compressed state. The first spring 3 is used to drive the needle seat assembly 2 to move toward the support 4, so that the needle tube 8 extends out of the needle sleeve 1.

[0032] When a puncture guide needle is needed to implant a chip into the human body, the chip can be installed inside the needle tube 8, and the support 4 can be placed on the skin tissue where the chip needs to be implanted. Pressing the pressing part 7 disengages the first locking structure 5 from the second locking structure 6, activating the first spring 3. The first spring 3 drives the needle seat assembly 2 to move towards the support 4, allowing the needle tube 8 to pierce the human body and insert the chip. Therefore, the above-mentioned puncture guide needle can automatically implant the chip into the human body, saving doctors' time.

[0033] See Figures 3 to 8As shown, in some embodiments, the needle holder assembly 2 includes a slider 21, a needle holder 22, and a second spring 23. One end of the slider 21 contacts the first spring 3. The needle holder 22 is engaged with the end of the slider 21 away from the bracket 4. The needle tube 8 is installed in the needle holder 22 and passes through the slider 21. The second spring 23 is disposed inside the needle holder 22 and is sandwiched between the needle holder 22 and the slider 21 and is adapted to be in a compressed state. The end of the slider 21 near the bracket 4 is provided with a first trigger structure, and the end of the bracket 4 near the slider 21 is provided with a second trigger structure. When the needle tube 8 extends outside the needle sleeve 1, the first trigger structure contacts the second trigger structure, causing the slider 21 and the needle holder 22 to disengage from the engagement connection, and the second spring 23 drives the needle tube 8 to retract into the needle sleeve 1.

[0034] Specifically, the slider 21 can be cylindrical in shape. The end of the slider 21 away from the bracket 4 can contact the first spring 3, and the side wall of the slider 21 can be provided with a second snap-fit ​​structure 6. The diameter of the slider 21 is slightly smaller than the inner diameter of the needle sleeve 1, and the slider 21 can move along the height direction of the needle sleeve 1. The needle base 22 can also be cylindrical in shape. The diameter of the needle base 22 is smaller than the diameter of the first spring 3. The needle base 22 can be inserted into the first spring 3, and the inside of the needle base 22 can be provided with a cavity, into which the second spring 23 can be installed. The needle tube 8 can include a needle tube support and a thin needle tube. One end of the needle tube support is fixed to the top surface inside the needle base 22, and the needle tube support is inserted into the second spring 23. The other end of the needle tube support can pass through the slider 21, and the other end of the needle tube support is connected to a thin needle tube, which is located between the slider 21 and the bracket 4. The second spring 23 is disposed between the needle holder 22 and the slider 21. The needle holder 22 and the slider 21 can be engaged to compress the second spring 23. The second spring 23 is used to drive the needle holder 22 to move away from the bracket 4.

[0035] When the first spring 3 drives the slider 21 to a preset position (the position where the needle 8 is inserted into the human body and the chip is inserted into the appropriate place), the first trigger structure on the slider 21 can contact the second trigger structure on the support 4. During the contact between the first and second trigger structures, the slider 21 can disengage from the needle holder 22 and activate the second spring 23. The second spring 23 can drive the needle holder 22 to move away from the support 4, automatically pulling the fine needle out of the human body. The fine needle can also retract into the needle sheath 1. Therefore, after the first spring 3 is activated to insert the fine needle into the human body, the second spring 23 can be automatically activated, causing the second spring 23 to drive the fine needle out of the human body, thus automatically completing the action of pulling out the fine needle and further simplifying the process of implanting the chip in the human body.

[0036] See Figures 3 to 8 As shown, in some embodiments, the slider 21 is provided with a first limiting protrusion 211, the needle seat 22 is provided with a second limiting protrusion 221, and the first limiting protrusion 211 abuts against the end of the second limiting protrusion 221 away from the bracket 4. The first triggering structure includes a triggering protrusion 212, which protrudes toward the direction close to the bracket 4. The second triggering structure includes a triggering ramp 42, which extends obliquely toward the direction away from the slider 21. When the needle tube 8 extends out of the needle sleeve 1, the triggering protrusion 212 moves along the triggering ramp 42, and the triggering protrusion 212 drives the slider 21 to rotate.

[0037] Specifically, in this embodiment, the first limiting protrusion 211 includes a vertical protrusion and a horizontal protrusion connected to each other. The vertical protrusion is perpendicular to the end of the slider 21 away from the bracket 4, and the horizontal protrusion is perpendicular to the side wall of the vertical protrusion. The vertical protrusion, the horizontal protrusion and the end face of the slider 21 can form a U-shaped structure with the opening facing the needle holder. The second limiting protrusion 221 can be disposed on the side wall of the needle holder and can be inserted into the U-shaped structure. That is, at this time, the slider 21 is engaged with the needle seat 22, the second limiting protrusion 221 contacts the horizontal protrusion, and the first limiting protrusion 211 can restrict the needle seat 22 from moving away from the bracket 4.

[0038] A trigger protrusion 212 may be provided on one end face of the slider 21 near the bracket 4. The trigger protrusion 212 is a thin rod-shaped structure. The trigger ramp 42 is formed by the indentation of the end face of the bracket 4 in the direction away from the slider 21. The width of the trigger ramp 42 is greater than the width of the trigger protrusion 212. When viewed from above the bracket 4, the shape of the trigger ramp 42 is arc-shaped, and the axis of the arc, the axis of the slider 21 and the axis of the pin seat 22 are coaxial. The depth of the indentation of the trigger ramp 42 gradually increases from one end to the other end.

[0039] When the slider 21 moves toward the bracket 4 to the preset position, the trigger protrusion 212 inserts into the space where the trigger ramp 42 is located. The trigger protrusion 212 contacts the trigger ramp 42 and can move along the inclined direction of the trigger ramp 42. During the movement, the trigger protrusion 212 drives the slider 21 to rotate. During the rotation of the slider 21, the second limiting protrusion 221 can disengage from the above-mentioned U-shaped structure. That is, the second limiting protrusion and the first limiting protrusion 211 no longer overlap in the height direction of the needle sleeve 1. At this time, the slider 21 and the needle seat 22 disengage, and the second spring 23 is activated. The second spring 23 drives the needle seat 22 to move away from the bracket 4. Therefore, the above structure is simple, and the second spring 23 can be smoothly activated through the above structure.

[0040] See Figures 5 to 7 As shown, in some embodiments, the trigger bump 212 has an inclined surface at one end facing the trigger ramp 42, and the inclined surface and the trigger ramp 42 are used to fit together.

[0041] Specifically, the trigger bump 212 has an inclined surface at one end facing the trigger ramp 42. When the trigger bump 212 contacts the trigger ramp 42, the inclined surface can fit with the inclined surface of the trigger ramp 42, which can make the trigger bump 212 move more smoothly along the trigger ramp 42, reduce the probability of the second spring 23 failing to be activated, and reduce the failure rate of the puncture guide needle.

[0042] See Figures 3 to 5 As shown, in some embodiments, the end of the slider 21 away from the bracket 4 has a first annular protrusion 213 and a second annular protrusion 214, the second annular protrusion 214 being located inside the first annular protrusion 213, the first annular protrusion 213 and the second annular protrusion 214 being spaced apart, the needle seat 22 being inserted between the first annular protrusion 213 and the second annular protrusion 214, and the needle tube 8 being inserted inside the second annular protrusion 214 and used to extend out from the slider 21.

[0043] Specifically, the end face of the slider 21 away from the bracket 4 may have two annular protrusions, namely a first annular protrusion 213 and a second annular protrusion 214. The first annular protrusion 213 and the second annular protrusion 214 are coaxial and spaced apart, with the second annular protrusion 214 located inside the first annular protrusion 213. The diameter of the first annular protrusion 213 is equal to the diameter of the first spring 3, and one end of the first annular protrusion 213 contacts the first spring 3. The diameter of the second annular protrusion 214 is equal to the diameter of the second spring 23, and the second annular protrusion 214 contacts the second spring 23. The needle seat 22 can be inserted between the first annular protrusion 213 and the second annular protrusion 214, and the slider 21 has a hole in the area inside the second annular protrusion, through which the needle tube 8 can pass and extend out from the slider 21. The first limiting protrusion can be disposed on the inner wall of the second annular protrusion 214, and the first limiting protrusion can be perpendicular to the second annular protrusion 214.

[0044] When it is necessary to engage the needle holder 22 with the slider 21, simply insert the needle holder 22 between the first annular protrusion 213 and the second annular protrusion 214, and pass the needle tube 8 through the hole on the slider 21. The needle holder 22 can then be precisely positioned on the slider 21. By rotating the needle holder 22, the second limiting protrusion 221 contacts the first limiting protrusion 211, thus completing the engagement between the needle holder 22 and the slider 21. Therefore, the above structure allows for convenient and quick installation of the needle holder 22 onto the slider 21, making the use of the puncture guide needle more comfortable.

[0045] See Figure 1 and Figure 2 As shown, in some embodiments, the first snap-fit ​​structure 5 includes a connecting part 51 and a snap-fit ​​part 52. One end of the connecting part 51 is connected to the outer wall of the needle sleeve 1, and the other end of the connecting part 51 is connected to the snap-fit ​​part 52 and the pressing part 7. The side wall of the needle sleeve 1 is provided with a first hollow 11, and the snap-fit ​​part 52 is used to extend into the first hollow 11 and engage with the second snap-fit ​​structure 6.

[0046] Specifically, the connecting part 51 can be perpendicular to the outer wall of the needle sheath 1. The connecting part 51 can be connected to the locking part 52, which can be obliquely inserted into the first hollow 11 and can engage with the second locking structure 6. The pressing part 7 can be connected to the locking part 52, and there is a gap between the pressing part 7 and the outer wall of the needle sheath 1. The length of the pressing part 7 is greater than the length of the locking part 52. The pressing part 7 and the locking part 52 can form a structure similar to a long rod. The connecting part 51 can serve as the fulcrum of the long rod formed by the pressing part 7 and the locking part 52. Pressing the pressing part 7 towards the needle sheath 1 can drive the locking part 52 to move away from the second locking structure 6, causing the locking part 52 to disengage from the second locking structure 6 and activating the first spring 3. Therefore, the pressing part 7 can be pressed with very little effort to activate the first spring 3, making it convenient for the operator to use the puncture guide needle.

[0047] See Figure 1 and Figure 2 As shown, in some embodiments, the puncture guide needle further includes a limiting ring 9, which is sleeved on the outside of the needle sleeve 1. The limiting ring 9 is used to rotate around the needle sleeve 1. The limiting ring 9 is provided with a limiting block 91, which is located between the pressing part 7 and the outer wall of the needle sleeve 1 and abuts against the pressing part 7.

[0048] Specifically, the outer wall of the needle sleeve 1 may be provided with an annular groove, and the limiting ring 9 may be installed in the annular groove. The limiting ring 9 may be rotatable around the axis of the needle sleeve 1. The limiting ring 9 may be provided with a limiting block 91, which may be located between the pressing part 7 and the needle sleeve 1 and abut against the pressing part 7. The limiting block 91 may restrict the pressing part 7 from moving towards the needle sleeve 1, thereby preventing accidental contact with the pressing part 7 and activation of the first spring 3, and avoiding injury to personnel.

[0049] When the puncture guide needle is needed, the limiting ring 9 can be rotated to make the limiting block 91 leave the area between the pressing part 7 and the needle sleeve 1, so that the pressing part 7 can be pressed normally to activate the first spring 3.

[0050] See Figures 1 to 3As shown, in some embodiments, the snap-fit ​​part 52 is provided with a snap-fit ​​groove, the second snap-fit ​​structure 6 includes a snap-fit ​​block 61, the snap-fit ​​block 61 is engaged with the snap-fit ​​groove, the first cutout 11 extends toward the direction close to the bracket 4, and the first cutout 11 is used for the snap-fit ​​block 61 to move.

[0051] Specifically, the locking part 52 may include a vertical locking plate and a horizontal locking plate. The vertical locking plate can be connected to the connecting part 51 and can be perpendicular to the connecting part 51. The horizontal locking plate can be fixed perpendicularly to the vertical locking plate and can protrude towards the needle sleeve 1. The horizontal locking plate, the vertical locking plate, and the connecting part 51 can form a locking groove. The locking block 61 can extend into the first hollow 11 and engage with the locking groove. The first hollow 11 can extend along the height direction of the needle sleeve 1 towards the support 4. When the slider 21 moves towards the support 4, the locking block 61 can move within the first hollow 11. The first hollow 11 can guide the slider 21, preventing the slider 21 from rotating randomly inside the needle sleeve 1 and causing malfunctions, thus reducing the failure rate of the puncture guide needle.

[0052] When the first cutout 11 extends to the position where it contacts the bracket 4, it can be changed to extend along the circumference of the needle sleeve 1. This can provide room for the slider 21 to rotate within the needle sleeve 1, and can avoid the situation where the slider 21 cannot rotate due to the block 61 blocking it, thus preventing the slider 21 from disengaging from the needle seat 22.

[0053] See Figure 7 and Figure 8 As shown, in some embodiments, the support 4 is provided with a magnet 45 at one end near the needle seat assembly 2, and the magnet 45 is used to attract the chip assembly 10.

[0054] Specifically, the end of the support 4 near the needle hub assembly 2 may have a groove, and the magnet 45 can be installed in the groove. The chip assembly 10 may include a chip holder, a chip, and a magnetic metal sheet. The chip and the magnetic metal sheet are installed on the chip holder. When using the puncture guide needle, the chip holder can be installed on the end of the slider 21 near the support 4. The first spring 3 drives the slider 21 to move towards the support 4, so that the chip is implanted into the human body. The magnet 45 on the support 4 can attract the chip holder, so that the chip holder is automatically installed on the support 4 without manual operation, which can further simplify the process of implanting a chip in the human body.

[0055] See Figure 2 , Figure 7 and Figure 8As shown, in some embodiments, the needle sleeve 1 has a boss structure at one end near the bracket 4, and the bracket 4 has a narrow groove 43 and a wide groove 44 that are interconnected. The boss structure is used to insert into the wide groove 44 and move along the wide groove 44 to the narrow groove 43, so that the bracket 4 is fixed to the needle sleeve 1.

[0056] Specifically, in this embodiment, the end of the needle sleeve 1 near the support 4 may be provided with two boss structures. The support 4 is provided with two sets of narrow groove rails 43 and wide groove rails 44, each set of narrow groove rails 43 and wide groove rails 44 corresponding to one boss structure. In other embodiments, the end of the needle sleeve 1 near the support 4 may be provided with other numbers of boss structures, and the number of narrow groove rails 43 and wide groove rails 44 on the support 4 is equal to the number of boss structures.

[0057] In this embodiment, the boss structure may include two plates, which are perpendicular to each other. One plate is perpendicular to the end face of the needle sleeve 1, and the other plate is parallel to the end face of the needle sleeve 1. The two plates and the end face of the needle sleeve 1 can form a grooved structure. The two plates can be arc-shaped plates. The wide groove rail 44 and the narrow groove rail 43 are also arc-shaped. When the needle sleeve 1 is installed on the bracket 4, the boss structure is first inserted into the wide groove rail 44, and then the needle sleeve 1 is rotated to move the boss structure along the wide groove rail 44 into the narrow groove rail 43. The groove on the boss structure can engage with the side wall of the narrow groove rail 43 to temporarily fix the needle sleeve 1 to the bracket 4. When the needle sleeve 1 needs to be removed from the bracket 4, simply rotate the needle sleeve 1 in the opposite direction to move the boss structure along the narrow groove rail 43 into the wide groove rail 44, and the needle sleeve 1 can be removed from the bracket 4. In other embodiments, the boss structure may include three plates, two of which are parallel to each other, and a third plate is perpendicularly disposed between the two plates and connects the two parallel plates. The three plates can form an I-shaped structure. Therefore, by providing the boss structure, the narrow groove 43 and the wide groove 44, the needle sleeve 1 can be easily and detachably mounted on the bracket 4.

[0058] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A puncture guide needle, characterized in that, The device includes a needle sleeve (1), a needle hub assembly (2), a first spring (3), and a bracket (4). The needle sleeve (1) contains the needle hub assembly (2) and the first spring (3). One end of the needle sleeve (1) is detachably connected to the bracket (4). The needle sleeve (1) has a first snap-fit ​​structure (5) connected to a pressing part (7), which is located outside the needle sleeve (1). The needle hub assembly (2) has a second snap-fit ​​structure (6) that engages with the first snap-fit ​​structure (5). The needle hub assembly (2) is connected to the support (4) with a needle tube (8) at one end. The first spring (3) is sandwiched between the needle sleeve (1) and the end of the needle hub assembly (2) away from the support (4). The first spring (3) is adapted to be in a compressed state. The support (4) is provided with a puncture hole (41) corresponding to the needle tube (8). The puncture hole (41) is used for the needle tube (8) to extend out. When the pressing part (7) is pressed, the pressing part (7) drives the first locking structure (5) away from the second locking structure (6). The needle holder assembly (2) includes a slider (21), a needle holder (22), and a second spring (23). One end of the slider (21) contacts the first spring (3). The needle holder (22) is engaged with the end of the slider (21) away from the bracket (4). The needle tube (8) is installed in the needle holder (22) and passes through the slider (21). The second spring (23) is disposed inside the needle holder (22) and is clamped within the needle holder (22). The slider (21) is positioned between the slider (21) and the support (4), and is adapted to be in a compressed state. The slider (21) is provided with a first trigger structure at one end near the support (4), and the support (4) is provided with a second trigger structure at one end near the slider (21). When the needle tube (8) extends out of the needle sleeve (1), the first trigger structure contacts the second trigger structure, causing the slider (21) and the needle seat (22) to disengage from the locking connection. The second spring (23) drives the needle tube (8) to retract into the needle sleeve (1).

2. The puncture guide needle according to claim 1, characterized in that, The slider (21) is provided with a first limiting protrusion (211), the needle seat (22) is provided with a second limiting protrusion (221), and the first limiting protrusion (211) abuts against the end of the second limiting protrusion (221) away from the bracket (4). The first trigger structure includes a trigger protrusion (212), which protrudes toward the bracket (4). The second trigger structure includes a trigger ramp (42), which extends obliquely toward the slider (21). When the needle tube (8) extends out of the needle sleeve (1), the trigger protrusion (212) moves along the trigger ramp (42), and the trigger protrusion (212) drives the slider (21) to rotate.

3. The puncture guide needle according to claim 2, characterized in that, The trigger protrusion (212) has an inclined surface at one end facing the trigger ramp (42), and the inclined surface and the trigger ramp (42) are used to fit together.

4. The puncture guide needle according to claim 1, characterized in that, The slider (21) has a first annular protrusion (213) and a second annular protrusion (214) at one end away from the bracket (4). The second annular protrusion (214) is located inside the first annular protrusion (213). The first annular protrusion (213) and the second annular protrusion (214) are spaced apart. The needle seat (22) is inserted between the first annular protrusion (213) and the second annular protrusion (214). The needle tube (8) is inserted inside the second annular protrusion (214) and is used to extend out from the slider (21).

5. The puncture guide needle according to claim 1, characterized in that, The first snap-fit ​​structure (5) includes a connecting part (51) and a snap-fit ​​part (52). One end of the connecting part (51) is connected to the outer wall of the needle sleeve (1), and the other end of the connecting part (51) is connected to the snap-fit ​​part (52) and the pressing part (7). The side wall of the needle sleeve (1) is provided with a first hollow (11). The snap-fit ​​part (52) is used to extend into the first hollow (11) and engage with the second snap-fit ​​structure (6).

6. The puncture guide needle according to claim 5, characterized in that, The snap-fit ​​part (52) is provided with a snap-fit ​​groove, and the second snap-fit ​​structure (6) includes a snap-fit ​​block (61). The snap-fit ​​block (61) is engaged with the snap-fit ​​groove. The first cutout (11) extends toward the direction close to the bracket (4) and is used for the snap-fit ​​block (61) to move.

7. The puncture guide needle according to claim 1, characterized in that, The puncture guide needle also includes a limiting ring (9), which is sleeved on the outside of the needle sheath (1). The limiting ring (9) is used to rotate around the needle sheath (1). The limiting ring (9) is provided with a limiting block (91), which is located between the pressing part (7) and the outer wall of the needle sheath (1) and abuts against the pressing part (7).

8. The puncture guide needle according to claim 1, characterized in that, The bracket (4) has a magnet (45) at one end near the pin seat assembly (2), and the magnet (45) is used to attract the chip assembly (10).

9. The puncture guide needle according to claim 1, characterized in that, The needle sleeve (1) has a boss structure at one end near the bracket (4). The bracket (4) has a narrow groove (43) and a wide groove (44) that are connected to each other. The boss structure is used to insert into the wide groove (44) and move along the wide groove (44) to the narrow groove (43), so that the bracket (4) is fixed to the needle sleeve (1).

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