Puncture needle assembly with quick mounting function, puncture mechanism and medical equipment

Abstract

The invention provides a puncture needle assembly with a quick mounting function, a puncture mechanism and medical equipment. The puncture needle assembly comprises a shell and a support. The shell can partially wrap the puncture needle, a connecting part is formed at the end, close to the support, of the shell, and a protrusion and a puncture needle hole allowing the puncture needle to be inserted therein are formed in the connecting part. The support comprises a through hole and a limiting notch, the through hole can at least partially accommodate the connecting part, the puncture needle can be inserted into the through hole, and the through hole is communicated with the limiting notch. The limiting notch comprises a first groove and a second groove, the extending directions of the first groove and the second groove are perpendicular to each other, the first groove extends from the end face, facing the shell, of the support to the axial center side of the support, and the first groove is communicated with the second groove. The protrusion can enter the second groove through the first groove, and the second groove can limit the protrusion in the axial direction.

Description

Technical Field

[0001] The present application relates to the technical field of puncture medical devices, and particularly to a puncture needle assembly, a puncture mechanism and a medical device with a quick installation function. Background Art

[0002] In existing puncture devices, fastening screws or other threaded fasteners are often used to install and fix the puncture needle. The method of using fastening screws to fix the puncture needle has the following defects: 1. The fastening screws need to be repeatedly rotated and tightened using tools, and the installation process is time-consuming and cumbersome. It is not suitable for occasions where the puncture needle needs to be frequently installed and disassembled or quickly installed and disassembled. 2. As the number and frequency of disassembly of the fastening screws increase, the fasteners such as screws are prone to wear and thread detachment, etc., which may affect the firmness of the threaded connection and cause the fixed item to fall off. 3. It is not easy to control the tightening force of the fastening screws. If the tightening force is too small, the item may become loose and fall off, while if the tightening force is too large, the fixed part may be deformed or even damaged.

[0003] CN201701301U discloses an ultrasonic probe puncture bracket, which includes a mounting base detachably mounted in a mounting groove on the arc-shaped handle of the ultrasonic probe. There are at least two mounting grooves on the arc-shaped handle of the ultrasonic probe, and a puncture needle holder is fixedly mounted on the mounting base. A puncture needle is installed in the puncture needle holder, and a fastening device is provided on the puncture needle holder. The mounting base is installed in different mounting grooves, the puncture needle is installed in the puncture needle holder, and the puncture needle is fixed by relying on the fastening device.

[0004] For the ultrasonic probe puncture bracket disclosed in the above-mentioned utility model patent, it still relies on fastening devices such as fastening screws to fix the puncture needle, and this fastening method still has many drawbacks of using fastening screws to fix the puncture needle as described above. Summary of the Invention

[0005] In view of the state of the above-mentioned prior art, the present application is made. The purpose of the present application is to provide a puncture needle assembly with a quick installation function. The puncture needle assembly can quickly install or disassemble the puncture needle on the medical device without the aid of auxiliary tools.

[0006] The present application also provides a puncture mechanism including the above-mentioned puncture needle assembly, and also provides a medical device including the above-mentioned puncture mechanism.

[0007] The present application provides a puncture needle assembly with a quick installation function, which includes a housing and a support

[0008] The housing can partially cover the puncture needle. One end of the housing close to the support forms a connection part, and the connection part is formed with a protrusion and a puncture needle hole for the puncture needle to insert.

[0009] The support includes a through hole and a limiting notch. The through hole can at least partially accommodate the connecting portion. The puncture needle can be inserted into the through hole. The through hole and the limiting notch communicate with each other.

[0010] The limiting notch includes a first groove and a second groove whose extending directions are perpendicular to each other. The first groove extends from the end face of the support facing the housing towards the axial center side of the support. The first groove and the second groove communicate with each other.

[0011] The protrusion can enter the second groove through the first groove. The second groove can form an axial limit for the protrusion.

[0012] In at least one possible embodiment, the connecting portion is further formed with a spring pin interface.

[0013] The support is further provided with a spring pin.

[0014] The spring pin can be snap - fitted into the spring pin interface.

[0015] In at least one possible embodiment, the spring pin interface is formed on the axial end face of the protrusion close to the support.

[0016] The spring pin is arranged along the axis of the support. The spring pin passes through the wall surface of the second groove far from the housing and extends into the second groove.

[0017] In at least one possible embodiment, the spring pin includes a retractable top bead arranged at its end.

[0018] The top bead is at least partially arranged in the second groove.

[0019] The top bead can at least partially enter the spring pin interface to snap the protrusion into the second groove.

[0020] In at least one possible embodiment, the protrusion extends from the side surface of the connecting portion towards the radially outer side of the connecting portion.

[0021] In at least one possible embodiment, the width of the second groove is the same as the thickness of the protrusion. The second groove and the protrusion form a clearance fit.

[0022] In at least one possible embodiment, a chamfer structure is formed at least at one of the edge of the entrance of the first groove, the edge of the opening of the through hole, the edge of the connecting portion, and the edge of the protrusion.

[0023] The puncture needle assembly further includes the puncture needle.

[0024] The present application also provides a puncture mechanism, which includes the aforementioned puncture needle assembly with quick installation function.

[0025] The present application also provides a medical device, which includes the aforementioned puncture mechanism.

[0026] The present application provides a puncture needle assembly, a puncture mechanism and a medical device with quick installation function, which can quickly install or disassemble the puncture needle on the medical device without the aid of auxiliary tools. The puncture needle installation and disassembly method provided by this solution is simple and fast. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of a puncture needle assembly according to an embodiment of the present application.

[0028] Figure 2 It is a partial structural schematic diagram of a puncture mechanism according to an embodiment of the present application.

[0029] Figure 3 It is a schematic structural diagram of a puncture needle and a housing according to an embodiment of the present application.

[0030] Figure 4 It is a schematic structural diagram of the puncture needle and the housing from another perspective according to an embodiment of the present application.

[0031] Figure 5 It is a schematic internal structural diagram of a support according to an embodiment of the present application.

[0032] Figure 6 It is a schematic structural diagram of a support according to an embodiment of the present application.

[0033] Figure 7 It is a schematic structural diagram of the puncture needle assembly from another perspective according to an embodiment of the present application.

[0034] Figure 8 It is a schematic internal structural diagram of a puncture needle assembly according to an embodiment of the present application.

[0035] Description of the Reference Numerals

[0036] 100 Medical device

[0037] 200 Puncture mechanism

[0038] 210 Puncture needle

[0039] 211 Needle rod

[0040] 212 Pipeline interface

[0041] 213 Cable interface

[0042] 220 Housing

[0043] 221 First Housing

[0044] 222 Second Housing

[0045] 223 First Opening

[0046] 224 Second Opening

[0047] 225 Connecting Portion

[0048] 2251 Protrusion

[0049] 2252 Spring Pin Interface

[0050] 2253 Puncture Needle Hole

[0051] 230 Support

[0052] 231 Through Hole

[0053] 232 Limit Notch

[0054] 2321 First Groove

[0055] 2322 Second Groove

[0056] 233 Spring Pin

[0057] 2331 Top Bead

[0058] 234 Support Connecting Portion Detailed Implementation Manner

[0059] The following describes the exemplary implementation manners of the present application with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, and are not used to exhaust all feasible manners of the present application, nor to limit the scope of the present application.

[0060] The implementation manner of the present application provides a puncture needle assembly with a quick installation function (hereinafter, sometimes simply referred to as "puncture needle assembly"). As Figure 1 , Figure 2 shown, the puncture needle assembly may include a puncture needle 210, a housing 220, and a support 230.

[0061] It can be understood that the puncture needle in this implementation manner can be various medical needles that need to be punctured, such as ablation needles.

[0062] Exemplarily, the puncture needle 210 can be an ablation needle. As Figure 1 and Figure 2As shown, the puncture needle 210 may include a needle shaft 211, a pipe interface 212, and a cable interface 213. One end of the puncture needle 210 may be provided with a pipe interface 212 and a cable interface 213 (this end is the head / base end of the puncture needle), and the other end of the puncture needle 210 may form a needle tip (this end is the tail end of the puncture needle). The pipe interface 212 and the cable interface 213 may be respectively used to connect a water pipe and a cable. Exemplarily, the pipe interface 212 may include a water inlet pipe interface and a water outlet pipe interface.

[0063] As Figure 1 , Figure 2 and Figure 3 shown, the housing 220 may be a columnar housing (including an approximately columnar housing), particularly a cylindrical housing, which may partially cover the puncture needle 210, particularly at least partially cover the pipe interface 212 and the cable interface 213 at the head end of the puncture needle. As Figure 1 and Figure 3 shown, the housing 220 may include a first housing 221 and a second housing 222. The first housing 221 and the second housing 222 may be connected by structures such as snap fasteners and bolts.

[0064] The housing 220 may further form a first opening 223 and a second opening 224, which are respectively used to at least partially accommodate or pass through the pipe interface 212 and the cable interface 213. Exemplarily, the first housing 221 and the second housing 222 may respectively form semicircular or semi-elliptical, semi-oval notches, and the corresponding notches may be combined to form circular or elliptical, oval first openings 223 and second openings 224.

[0065] Furthermore, as Figure 1 , Figure 3 and Figure 4 shown, the housing 220 may be in the shape of a stepped shaft. The axial end of the housing 220 facing the tail end of the puncture needle may extend out a connecting portion 225. The diameter of the connecting portion 225 may be smaller than the main body portion of the housing 220. The connecting portion 225 may form a protrusion 2251, a spring pin interface 2252, and a puncture needle hole 2253. The protrusion 2251 may extend radially outward from the side surface (cylindrical surface) of the connecting portion 225 to the radial outside of the connecting portion 225. The end surface of the protrusion 2251 extending axially outward along the housing 220 may be flush with the axial end surface of the connecting portion 225. The spring pin interface 2252 may be formed on the protrusion 2251, particularly on the axial end surface of the protrusion 2251 close to the support 230. The puncture needle hole 2253 may be formed at the center (such as the center of a circle) of the connecting portion 225, and the puncture needle 210 may be inserted into the puncture needle hole 2253.

[0066] As Figure 1 , Figure 5 and Figure 6As shown, the main body of the support 230 can be cylindrical (including similar to cylindrical). The support 230 can include a through hole 231, a limit notch 232, and a spring pin 233. The through hole 231 can be formed at or near the center of the support 230. The through hole 231 can at least partially accommodate the connecting portion 225, and the puncture needle 210 can pass through the through hole 231. The limit notch 232 can be formed on the side surface (cylindrical surface) of the support 230, and the limit notch 232 communicates with the through hole 231 (specifically, penetrates, that is, there is no blocking structure between the limit notch 232 and the through hole 231).

[0067] The limit notch 232 can be an "L-shaped" notch, that is, the limit notch 232 can include a first groove 2321 and a second groove 2322 whose extending directions are perpendicular to each other, and the first groove 2321 and the second groove 2322 can communicate. The first groove 2321 of the limit notch 232 can extend from the end surface of the support 230 facing the housing 220 toward the axial center side of the support 230. The second groove 2322 of the limit notch can extend circumferentially along the axial inner end of the first groove 2321. As Figure 5 and Figure 7 shown, the spring pin 233 can be arranged along the axis of the support 230, and the end of the spring pin 233 can have a top bead 2331 that can expand and contract. As Figure 4 、 Figure 5 shown, the spring pin 233 can extend into the second groove 2322 from the wall surface of the second groove 2322 away from the housing 220. Further, the top bead 2331 at the end of the spring pin 233 can be at least partially arranged in the second groove 2322 of the limit notch 232. It can be understood that the support 230 can support the connecting portion 225 and indirectly support the puncture needle 210.

[0068] As Figure 2 and Figure 8 shown, the connecting portion 225 can at least partially extend into the through hole 231 of the support, and the protrusion 2251 can extend into the first groove 2321 of the limit notch along with the connecting portion. After the protrusion 2251 enters the first groove 2321, after the protrusion 2251 reaches the end of the first groove 2321 (that is, the junction of the first groove 2321 and the second groove 2322), the housing 220 can be rotated to make the protrusion 2251 enter the second groove 2322. When the protrusion 2251 reaches the end of the second groove 2232 or other designed positions of the second groove 2232, the spring pin interface 2252 can be aligned with the spring pin 233, and the top bead 2331 of the spring pin 233 can be snapped into the spring pin interface 2252, that is, the top bead 2331 can at least partially enter the spring pin interface 2252 to form the extrusion of the spring pin 233 on the connecting portion 225.

[0069] It can be understood that the second groove 2322 can form an axial limit for the protrusion 2251. After the spring pin 233 is clamped with the connecting portion 225, the rotation of the housing and the puncture needle connected thereto can be restricted, so that the puncture needle will not come out of the support 230 during operation. Figure 2 and Figure 8 respectively show the structure of the puncture needle assembly when the spring pin 233 is clamped with the spring pin interface 2252. Since the puncture needle is mainly subjected to an axial thrust rather than a radial force or an axial torque, as long as a suitable spring pin is selected, its pressure is sufficient to ensure that the puncture needle will not fall off by itself.

[0070] Preferably, as Figure 3 and Figure 6 shown, the width W1 of the entrance of the first groove 2321 (located on the end face of the support 230 facing the housing 220) can be slightly larger than the width D of the protrusion 2251, so that the protrusion 2251 can smoothly enter the first groove 2321. In other words, the edge of the entrance of the first groove 2321 can form a chamfer structure. The edge of the opening of the through hole 231 can also form a chamfer structure.

[0071] Preferably, the edge of the end face of the housing 220 facing the support 230 (including the connecting portion 225 and its protrusion 2251) can form a chamfer structure to facilitate the connecting portion 225 to smoothly enter the through hole 231 of the support 230.

[0072] Preferably, as Figure 4 and Figure 6 shown, the width W2 of the second groove 2322 can be the same as the thickness H of the protrusion 2251. The second groove 2322 and the protrusion 2251 can form a clearance fit. It can be understood that a clearance fit refers to a fit with a clearance (including a minimum clearance equal to zero).

[0073] It can be understood that the specific structure of the spring pin and the form in which the spring pin connects the connecting portion to the support are not limited to the above technical solutions. Exemplarily, the spring pin can have a spring and a telescopic rod member, and the telescopic rod member can extend into a groove provided in the connecting portion to limit the housing. The telescopic state of the telescopic rod member can be controlled by a button, a buckle, etc.

[0074] Exemplarily, the puncture needle assembly can belong to a module of the puncture mechanism 200, and the puncture mechanism 200 can be applied to the medical device 100.

[0075] The usage method of the puncture needle assembly provided by the embodiment of the present application will be briefly described below.

[0076] Figure 1 What is shown is the state where the puncture needle is not yet installed in place. Figure 8The figure shows the state where the puncture needle is installed and locked. During installation, after the puncture needle 210 and the housing 220 are assembled, the connection part 225 of the puncture needle 210 and the housing 220 is aligned with the through hole 231 of the support 230, and the puncture needle 210 is passed through the through hole of the support 230. The protrusion 2251 of the connection part 225 can be aligned with the first groove 2321 of the limit notch 232. After alignment, the housing 220 is pushed into the support 230 until at least part of the connection part 225 is located in the through hole 231 of the support 230, and the protrusion 2251 is located at the end of the first groove 2321. Then the housing 220 is rotated (exemplarily, it can be rotated clockwise, and this clockwise direction is the clockwise direction observed axially from the upper left side in Figure 1 ), so that the protrusion 2251 enters the second groove 2322 until the top bead 2331 of the spring pin 233 is snapped into the spring pin interface 2252, completing the quick installation of the puncture needle.

[0077] When disassembling the puncture needle, first rotate (exemplarily, it can be rotated counterclockwise, and this counterclockwise direction is the counterclockwise direction observed axially from the upper left side in Figure 1 ) the housing 220 to cancel the snap connection between the top bead 2331 of the spring pin 233 and the spring pin interface 2252. Then the protrusion 2251 is disengaged from the first groove 2321, that is, the separation of the puncture needle from the card seat is completed.

[0078] In summary, the puncture needle assembly provided by this embodiment only needs two main steps of pushing and rotating to complete the installation or disassembly, which has better convenience compared with the traditional bolt fixing method.

[0079] An embodiment of the present application also provides a puncture mechanism. The puncture mechanism 200 may include the above-mentioned puncture needle assembly. The support 230 may be formed with a support connection part 234. As Figure 5 and Figure 6 shown, the support connection part 234 can be connected to the puncture mechanism through a plurality of bolts.

[0080] It can be understood that this puncture mechanism can be applied to medical institutions, medical equipment, etc.

[0081] An embodiment of the present application also provides a medical device. The medical device may have the above-mentioned puncture mechanism, and the puncture mechanism may include the above-mentioned puncture needle assembly with a quick installation function. Exemplarily, the puncture mechanism 200 may be arranged at the end of the medical device 100.

[0082] Preferably, the medical device may be a medical robot, a surgical robot, etc. with a puncture function.

[0083] The following briefly describes some beneficial effects of the above embodiments of the present application.

[0084] The puncture needle assembly, puncture mechanism and medical device provided by the embodiments of the present application can quickly install or disassemble the puncture needle on the medical device without the aid of auxiliary tools. The puncture needle installation and disassembly method provided by this solution is simple and fast, and the connection of the puncture needle is safe and reliable. This technical solution is more convenient and reliable than the traditional bolt fixing method.

[0085] It can be understood that in the present application, when the number of components or members is not specifically limited, the number can be one or more, and here "a plurality" means two or more. For the specific number of components or members shown in the drawings and / or described in the specification, such as two, three, four, etc., this specific number is usually exemplary rather than restrictive, and it can be understood as a plurality, that is, two or more. However, this does not mean that the present application excludes the case of one.

[0086] It should be understood that the above embodiments are merely exemplary and are not used to limit the present application. Those skilled in the art can make various modifications and changes to the above embodiments under the teaching of the present application without departing from the scope of the present application.

Claims

1. A puncture needle assembly with a quick installation function, characterized in that, It includes a housing (220) and a support (230). The housing (220) can partially cover the puncture needle (210). One end of the housing (220) close to the support (230) forms a connecting portion (225). The connecting portion (225) is formed with a protrusion (2251) and a puncture needle hole (2253) for the puncture needle (210) to be inserted. The support (230) includes a through hole (231) and a limiting notch (232). The through hole (231) can at least partially accommodate the connecting portion (225). The puncture needle (210) can be inserted into the through hole (231). The through hole (231) and the limiting notch (232) are in communication. The limiting notch (232) includes a first groove (2321) and a second groove (2322) with mutually perpendicular extending directions. The first groove (2321) extends from the end face of the support (230) facing the housing (220) towards the axial center side of the support (230). The first groove (2321) and the second groove (2322) are in communication. The protrusion (2251) can enter the second groove (2322) through the first groove (2321). The second groove (2322) can form an axial limit for the protrusion (2251).

2. The puncture needle assembly with a quick - installation function according to claim 1, characterized in that The connecting portion (225) is further formed with a spring pin interface (2252). The support (230) is further provided with a spring pin (233). The spring pin (233) can be snapped into the spring pin interface (2252).

3. The puncture needle assembly with quick installation function according to claim 2, characterized in that, The spring pin interface (2252) is formed on the axial end face of the protrusion (2251) close to the support (230). The spring pin (233) is arranged along the axis of the support (230). The spring pin (233) passes through the wall surface of the second groove (2322) far from the housing (220) and extends into the second groove (2322).

4. The puncture needle assembly with a quick installation function according to claim 2, characterized in that, The spring pin (233) includes a retractable top bead (2331) arranged at its end. The top bead (2331) is at least partially arranged in the second groove (2322). The top bead (2331) can at least partially enter the spring pin interface (2252) to snap the protrusion (2251) into the second groove (2322).

5. The puncture needle assembly with a quick installation function according to claim 1, characterized in that, The protrusion (2251) extends from the side surface of the connecting portion (225) towards the radially outer side of the connecting portion (225).

6. The puncture needle assembly with a quick installation function according to claim 1, characterized in that, The width (W2) of the second groove (2322) is the same as the thickness (H) of the protrusion (2251). The second groove (2322) and the protrusion (2251) form a clearance fit.

7. The puncture needle assembly with a quick installation function according to claim 1, characterized in that, At least one of the edge of the entrance of the first groove (2321), the edge of the opening of the through hole (231), the edge of the connecting portion (225), and the edge of the protrusion (2251) forms a chamfer structure. The puncture needle assembly further includes the puncture needle.

8. A puncture mechanism, characterized in that, Comprising the puncture needle assembly with quick installation function according to any one of claims 1 to 7.

9. A medical device, characterized in that, Comprising the puncture mechanism according to claim 8.

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