Puncture needle release device

Abstract

The present application relates to ultrasound-guided puncture equipment, in particular to a puncture needle dismounting device. The puncture needle dismounting device comprises a clamping fixing base, the clamping fixing base comprises opposite operation faces and a back face; the back face of the clamping fixing base is provided with a needle handle accommodating groove for accommodating a puncture needle handle, and a needle handle ejection hole is formed in the needle handle accommodating groove; an ejector is arranged on the operation face of the clamping fixing base; the ejector is inserted into the needle handle ejection hole and can eject the back face of the clamping fixing base along the needle handle ejection hole; a clamping movable part comprises a clamping part capable of clamping the puncture needle handle in the needle handle accommodating groove and a stop part capable of limiting the ejection of the ejector; and the clamping movable part can slide along the clamping fixing base. The puncture needle dismounting device has a simple and compact structure, can quickly replace the clamping structure of the puncture needle, and can realize the clamping and automatic ejection of the puncture needle.

Description

TECHNICAL FIELD

[0001] The present application relates to an ultrasound-guided puncture device, in particular to a puncture needle dismounting device. BACKGROUND

[0002] The puncture needle can be guided by an ultrasound probe to discharge, collect body fluid, or directly inject medicine into a specific part of the body. When performing scanning imaging, the display of the ultrasound diagnostic device displays the insertion guide of the puncture needle, and the operator can simultaneously confirm the image of the detected part and the movement of the puncture needle on the display, thereby performing a safe puncture operation. SUMMARY

[0003] In order to solve the problems existing in the prior art, the present application provides a puncture needle dismounting device, which is simple and compact in structure, can quickly replace the clamping structure of the puncture needle, and can realize clamping and automatic ejection of the puncture needle.

[0004] According to the technical scheme provided by the present application, a puncture needle dismounting device is provided, which comprises:

[0005] A clamping fixed seat comprising opposite operation faces and a back face; a needle handle containing groove for containing the needle handle of the puncture needle is arranged on the back face of the clamping fixed seat, and a needle handle ejection hole is formed in the needle handle containing groove;

[0006] An ejection piece arranged on the operation face of the clamping fixed seat; the ejection piece is inserted into the needle handle ejection hole and can eject the back face of the clamping fixed seat along the needle handle ejection hole;

[0007] A clamping movable piece comprising a clamping part capable of clamping the needle handle of the puncture needle in the needle handle containing groove and a stop part capable of limiting the ejection of the ejection piece; and the clamping movable piece is capable of sliding along the clamping fixed seat.

[0008] Further, a clamping fixed cover is arranged on the operation face of the clamping fixed seat, and the clamping movable piece and the ejection piece are covered by the clamping fixed cover.

[0009] Further, a limiting wall is formed around the needle handle containing groove, a locking gap is formed in the limiting wall at the extension end of the clamping fixed seat, and the locking gap is capable of engaging with the clamping part of the clamping movable piece.

[0010] Further, the needle handle containing groove comprises a first side part and a second side part connected as a whole, and the needle handle ejection hole is arranged in the first side part of the needle handle containing groove.

[0011] The clamping movable piece is arranged on the operation face of the clamping fixed seat opposite to the position of the second side part,

[0012] The ejecting part is provided with a blocking groove on the side of the ejection part close to the clamping movable part stopper, and the stopper can be clamped into the blocking groove on the ejection part.

[0013] Further, the blocking groove is provided with a guide groove at the position where the blocking groove is connected to the side wall of the ejection part, and the opening of the guide groove is gradually expanded from the position where the blocking groove is connected to the side wall of the ejection part.

[0014] Further, the clamping movable part is connected to the clamping fixed seat through a first elastic body, and the first elastic body applies a pulling force in the opposite direction of the X axis to the clamping movable part, so that the clamping movable part can apply a clamping force to the handle of the puncture needle in the handle accommodating groove.

[0015] Further, the clamping fixed seat is provided with a first connecting part, and the clamping movable part is also provided with a second connecting part; the second connecting part is connected to the first connecting part through the first elastic body.

[0016] Further, the ejecting part is also provided with a force applying part connected to the ejection part, and the force applying part is connected to a compressed second elastic body.

[0017] Further, a limiting part is formed between the force applying part and the ejection part of the ejecting part.

[0018] Further, the clamping movable part is provided with a pulling part for external force application.

[0019] As can be seen from the above, the puncture needle ejecting device provided by the present application has the following advantages compared with the prior art:

[0020] Firstly, the puncture needle is locked and ejected by the cooperation of the clamping movable part and the ejecting part; when the clamping movable part slides to a certain position and the ejecting part is not limited to be ejected, the ejection part of the ejecting part can push the handle of the puncture needle in the handle accommodating groove out of the back of the clamping fixed seat, so as to realize the ejection of the puncture needle.

[0021] Secondly, when the clamping movable part slides to a certain position and the ejecting part is limited to be ejected, the clamping movable part can clamp the handle of the puncture needle in the handle accommodating groove, so as to realize the locking of the puncture needle.

[0022] Thirdly, the puncture needle clamping structure is used in cooperation with the ultrasonic guided puncture equipment, so as to realize the convenient and rapid replacement of the puncture needle, and is suitable for the disposable infusion needle commonly used in the market.

[0023] Fourthly, the puncture needle clamping structure is used in cooperation with the ultrasonic guided puncture equipment, so as to realize the convenient and rapid replacement of the puncture needle. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the disassembly of the present application.

[0025] Figure 2 is a schematic diagram of the structure of the clamping fixed seat of the present application.

[0026] Figure 3 is a schematic diagram of the present application in the clamped state.

[0027] Figure 4 is a schematic diagram of the structure of the clamping movable piece of the present application.

[0028] Figure 5 is a schematic diagram of the structure of the ejecting piece of the present application.

[0029] Figure 6 is a sectional view of the puncture needle of the present application in the unlocked and ejected state.

[0030] Figure 7 is a sectional view of the puncture needle of the present application in the clamped state.

[0031] Figure 8 is a directional perspective view of the puncture needle of the present application in the clamped state.

[0032] Figure 9 is a perspective view of the puncture needle of the present application in the instant of being unlocked and not ejected (or the ejecting piece reaching the locking position in the clamped state without being locked).

[0033] Figure 10 is a perspective view of the puncture needle of the present application in the unlocked and ejected state.

[0034] 100. clamping fixed seat, 110. needle handle accommodating groove, 111. first side, 112. second side, 113. limiting wall, 114. locking gap, 120. needle handle ejection hole, 130. first connecting part, 200. ejecting piece, 210. ejection part, 211. blocking groove, 212. side wall, 213. limiting edge, 214. force applying part, 215. guide groove, 300. clamping movable piece, 310. movable piece body, 320. clamping part, 330. stop part, 340. second connecting part, 350. actuating part, 400. clamping fixed cover, 500. first elastic body, 600. second elastic body, 700. puncture needle. DETAILED DESCRIPTION

[0035] For the purpose, technical solutions and advantages of the present application to be more clearly and obviously understood, the present application is further described in detail below with specific examples and with reference to the drawings. Identical parts are denoted by identical reference numerals. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings. The words "inner" and "outer" are used to refer to the directions towards or away from the geometric center of a particular part.

[0036] The present application provides a puncture needle ejector, as shown in the drawings, the puncture needle ejector comprises: Figure 1

[0037] A clamping fixed seat 100, comprising opposite operating surfaces and back surfaces; a needle handle accommodating groove 110 for accommodating the needle handle of the puncture needle 700 is arranged on the back surface of the clamping fixed seat 100, and a needle handle ejection hole 120 is arranged in the needle handle accommodating groove 110;

[0038] A pop-up piece 200, arranged on the operating surface of the clamping fixed seat 100; the ejection part 210 of the pop-up piece 200 penetrates into the needle handle ejection hole 120 and can eject the back surface of the clamping fixed seat 100 along the needle handle ejection hole 120;

[0039] A clamping movable piece 300, comprising a clamping part 320 capable of clamping the needle handle of the puncture needle 700 in the needle handle accommodating groove 110 and a stop part 330 capable of limiting the ejection of the pop-up piece 200; and the clamping movable piece 300 is capable of sliding along the clamping fixed seat 100;

[0040] A clamping fixed cover 400, covering the clamping movable piece 300 and the pop-up piece 200 on the operating surface of the clamping fixed seat 100.

[0041] It should be explained that the present application mainly realizes the locking and ejection of the puncture needle 700 through the cooperation of the clamping movable piece 300 and the pop-up piece 200; when the clamping movable piece 300 slides to a position not limiting the ejection of the pop-up piece 200, the ejection part 210 of the pop-up piece 200 ejects the back surface of the clamping fixed seat 100, which can push out the needle handle of the puncture needle 700 in the needle handle accommodating groove 110, realizing the ejection of the puncture needle 700; when the clamping movable piece 300 slides to a position limiting the ejection of the pop-up piece 200, the clamping movable piece 300 can clamp the needle handle of the puncture needle 700 in the needle handle accommodating groove 110, realizing the locking of the puncture needle 700.

[0042] As shown in the drawings, Figure 2 and Figure 3 ​As shown in the drawings, the clamping fixed base 100 extends to the positive direction of the X axis, the needle handle containing groove 110 is located at the extending end of the clamping fixed base 100, and the needle handle containing groove 110 comprises a first side part 111 and a second side part 112 which are integrated; the needle handle ejection hole 120 is arranged in the first side part 111 of the needle handle containing groove 110.

[0043] The ejecting piece 200 is arranged in the first side part 111 of the needle handle containing groove 110, and the ejecting part 210 of the ejecting piece 200 corresponds to the position of the needle handle ejection hole 120; the second elastic body 600 is arranged on the force applying part 214 of the ejecting piece 200, the second elastic body 600 applies an elastic force in the reverse direction of the Z axis to the force applying part 214 of the ejecting piece 200, and in the case of no resistance, the elastic force can make the ejecting part 210 of the ejecting piece 200 eject the needle handle ejection hole 120.

[0044] The clamping movable piece 300 comprises a movable piece body 310, the movable piece body 310 is pressed on the operating surface of the clamping fixed base 100 opposite to the position of the second side part 112 and can slide to the positive direction of the X axis under the action of external force.

[0045] As shown in the drawings, the movable piece body 310 extends the stop part 330; one side of the ejecting part 210 of the ejecting piece 200 is provided with the blocking groove 211; the stop part 330 on the movable piece body 310 cooperates with the blocking groove 211 on the ejecting part 210 of the ejecting piece 200. Figure 4 and Figure 5 When the stop part 330 on the clamping movable piece 300 is clamped into the blocking groove 211 on the ejecting part 210, the resistance applied by the stop part 330 to the ejecting piece 200 prevents the ejecting piece 200 from ejecting, so that the ejecting piece 200 is in the retracted state; as shown in the drawings, when the clamping movable piece 300 slides to the positive direction of the X axis under the action of external force, the stop part 330 on the clamping movable piece 300 is separated from the blocking groove 211 of the ejecting part 210, the resistance preventing the ejecting piece 200 from ejecting disappears, and the ejecting part 210 of the ejecting piece 200 ejects the needle handle ejection hole 120. Figure 6

[0046] In order to facilitate the stop part 330 to enter and exit the blocking groove 211, as shown in the drawings, the blocking groove 211 and the side wall 212 of the ejecting part 210 form a guide groove 215 at the joint position, and the groove opening of the guide groove 215 gradually expands from the joint end of the blocking groove 211 to the position of the side wall 212 of the ejecting part 210. Figure 4 and Figure 5

[0047] ​​In order to make the clamping movable member 300 in the locking state when the ejector 200 is in the retracted state, so as to reliably lock the needle handle of the puncture needle 700 in the needle handle accommodating groove 110, so that the puncture needle 700 can stably and effectively puncture; Figure 4 、 Figure 5 and Figure 7 as shown;

[0048] The movable member body 310 of the clamping movable member 300 is also provided with a locking hook, which is located at the extended end of the clamping fixed seat 100 and extends to the back of the clamping fixed seat 100, so that the locking hook can hook the extended end edge of the clamping fixed seat 100 when the clamping movable member 300 is in the locking state;

[0049] The slot of the needle handle accommodating groove 110 is formed with a limiting wall 113, and the limiting wall 113 at the extended end of the clamping fixed seat 100 is provided with a locking gap 114, which can be engaged with the locking hook of the clamping movable member 300. When the clamping movable member 300 is subjected to the reverse force along the X-axis, the locking gap 114 is compressed, so that the locking hook of the clamping movable member 300 compresses the needle handle of the puncture needle 700 in the needle handle accommodating groove 110.

[0050] In order to make the locking hook of the clamping movable member 300 reliably compress the locking gap 114, that is, the clamping movable member 300 needs to be subjected to a reliable reverse force along the X-axis. In order to provide such force, the clamping fixed seat 100 is provided with a first connecting part 130 for connecting with the clamping movable member 300, and the movable member body 310 of the clamping movable member 300 is provided with a second connecting part 340, which is located at the opposite ends of the movable member body 310 respectively. The second connecting part 340 and the locking hook are connected by a first elastic body 500 between the first connecting part 130. When the clamping movable member 300 is in the locking state, the first elastic body 500 is in the stretched state, thereby giving the clamping movable member 300 a reliable reverse force along the X-axis, so that the locking hook of the clamping movable member 300 compresses the locking gap 114. The first elastic body 500 is preferably a tension spring, but is not limited to a tension spring, and can also be other elastic elements capable of giving the clamping movable member 300 a reverse force along the X-axis.

[0051] In order to facilitate the external force to be applied on the clamping movable part 300 to drive the clamping movable part 300 to slide along the clamping fixed seat 100, the movable part body 310 is further provided with a pulling part 350, and by pushing the pulling part 350, the clamping movable part slides to the direction of the needle tip of the puncture needle 700 (i.e. the positive direction of the X axis) under the action of the pushing force, overcomes the elastic force of the first elastic body 500, the stop portion 330 slides out of the stop groove 211, and the locking hook is separated from the locking gap 114, the locking of the locking hook to the needle handle is released, at the same time of the locking release, the ejecting part 200 is ejected from the needle handle top hole 120 under the action of the second elastic body 600, and the needle handle is ejected from the needle handle containing groove 110, so as to facilitate the medical staff to further operate.

[0052] After the ejecting part 200 top portion 210 ejects the clamping fixed seat 100 from the needle handle containing groove 110, the position of the stop groove 211 of the ejecting part 200 also moves, so that the stop portion 330 is blocked on the side of the ejecting part 200 close to the extending end of the clamping fixed seat 100, i.e. the side wall 212 of the top portion 210 blocks the stop portion 330 of the clamping movable part, overcomes the elastic force of the first elastic body 500, and prevents the clamping movable part from locking operation, which can prevent the movement of the clamping movable part from interfering with the operation of the medical staff behind, and facilitate the needle clamping operation again.

[0053] In order to limit the maximum position of the ejecting part 200, prevent the problem of puncture failure caused by too large ejection amplitude of the puncture needle 700, the ejecting part 200 comprises a force applying portion 214 and a top portion 210 connected with each other, a limiting edge 213 is formed between the force applying portion 214 and the top portion 210 of the ejecting part 200, the limiting edge 213 cooperates with the hole edge of the needle handle top hole 120 to limit the position of the ejecting part 200, and the length of the force applying portion 214 can limit the position of the retracting of the ejecting part 200 along the positive direction of the Z axis; when the second elastic body 600 is compressed, the ejecting part 200 is retracted, and the stop groove 211 on the ejecting part 200 is exposed on the operation surface.

[0054] In summary, the specific working state and working process of the present application are as follows:

[0055] When the puncture needle 700 is in the locked state, the ejecting part 200 is in the retracted state, and the clamping movable part 300 is in the locked state. Figure 8As shown, in this working state, the clamping active part is clamped to the second side of the needle handle under the action of the first elastic body 500, and the clamping part 320 is engaged with the locking gap 114 to lock the needle handle, which is firmly fixed in the needle handle accommodating groove 110 under the action of the clamping part 320. In this working state, the stop part 330 of the clamping active part is clamped into the stop groove 211 of the ejector 200, preventing the ejector 200 from ejecting and extruding the needle handle, and preventing the needle handle from being continuously subjected to the ejection force to cause the locking to be not firm.

[0056] When the puncture needle 700 is in the unlocked state, the ejector 200 is in the ejection state, and the clamping active part 300 is in the release state; as shown in FIG. 6. Figure 10 As shown, in this working state, the clamping active part is clamped to the second side of the needle handle under the action of the first elastic body 500, and the clamping part 320 is engaged with the locking gap 114 to lock the needle handle, which is firmly fixed in the needle handle accommodating groove 110 under the action of the clamping part 320. In this working state, the stop part 330 of the clamping active part is clamped into the stop groove 211 of the ejector 200, preventing the ejector 200 from ejecting and extruding the needle handle, and preventing the needle handle from being continuously subjected to the ejection force to cause the locking to be not firm.

[0057] When the puncture needle 700 is in the unlocked state, the ejector 200 is in the ejection state, and the clamping active part 300 is in the release state; as shown in FIG. 6. Figure 9 As shown, in this working state, the clamping active part is clamped to the second side of the needle handle under the action of the first elastic body 500, and the clamping part 320 is engaged with the locking gap 114 to lock the needle handle, which is firmly fixed in the needle handle accommodating groove 110 under the action of the clamping part 320. In this working state, the stop part 330 of the clamping active part is clamped into the stop groove 211 of the ejector 200, preventing the ejector 200 from ejecting and extruding the needle handle, and preventing the needle handle from being continuously subjected to the ejection force to cause the locking to be not firm.

[0058] Those skilled in the art should understand that the above description is only a specific embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A needle decannulation device for a puncture needle, characterized in that, The puncture needle stripping device comprises: A clamping fixed seat (100) comprises opposite operation faces and back faces; a needle handle accommodating groove (110) for accommodating a puncture needle handle is arranged on the back face of the clamping fixed seat (100), and a needle handle ejection hole (120) is arranged in the needle handle accommodating groove (110); A ejection piece (200) is arranged on the operation face of the clamping fixed seat (100); an ejection part (210) of the ejection piece (200) penetrates into the needle handle ejection hole (120) and can eject the back face of the clamping fixed seat (100) along the needle handle ejection hole (120); A clamping movable piece (300) comprises a clamping part (320) capable of clamping the puncture needle handle in the needle handle accommodating groove (110) and a stop part (330) capable of limiting the ejection of the ejection piece (200); and the clamping movable piece (300) can slide along the clamping fixed seat (100); The needle handle accommodating groove (110) comprises a first side part (111) and a second side part (112) connected as a whole, and the needle handle ejection hole (120) is arranged in the first side part (111) of the needle handle accommodating groove (110); The clamping movable piece (300) is arranged on the operation face of the clamping fixed seat (100) opposite to the position of the second side part (112), A stop groove (211) is arranged on one side of the ejection part (210) of the ejection piece (200) close to the stop part (330) of the clamping movable piece (300), and the stop part (330) can be clamped into the stop groove (211) on the ejection part (210).

2. The needle decannulation device of claim 1, wherein A clamping fixed cover (400) is further arranged, which covers the clamping movable piece (300) and the ejection piece (200) on the operation face of the clamping fixed seat (100).

3. The penetrating needle decannulation device of claim 1, wherein, A limiting wall (113) is arranged around the needle handle accommodating groove (110), a locking gap (114) is arranged on the limiting wall (113) at the extension end of the clamping fixed seat (100), and the locking gap (114) can be matched with the clamping part (320) of the clamping movable piece (300).

4. The penetrating needle decannulation device of claim 1, wherein, A guide groove (215) is formed at the position where the stop groove (211) and the side wall (212) of the ejection part (210) meet, and the groove opening of the guide groove (215) gradually expands from the position connected with the stop groove (211) to the position of the side wall (212) of the ejection part (210).

5. The penetrating needle decannulation device of claim 1, wherein, The clamping movable piece (300) is connected with the clamping fixed seat (100) through a first elastic body (500); the first elastic body (500) applies a pulling force in the opposite direction of the X axis to the clamping movable piece (300), and the pulling force can give the clamping movable piece (300) a clamping force for clamping the puncture needle handle in the needle handle accommodating groove (110).

6. The penetrating needle decannulation device of claim 5, wherein, A first connecting part (130) is arranged on the clamping fixed seat (100), and the clamping movable piece (300) further comprises a second connecting part (340); the second connecting part (340) and the first connecting part (130) are connected through the first elastic body (500).

7. The penetrating needle decannulation device of claim 1, wherein The ejecting piece (200) further comprises a force applying part (214) connected with the ejection part (210), and the force applying part (214) is connected with a compressed second elastic body (600).

8. The penetrating needle decannulation device of claim 7, wherein, The force applying part (214) of the ejecting piece (200) is formed with a limiting edge (213) between the force applying part (214) and the ejection part (210).

9. The penetrating needle decannulation device of claim 1, wherein, The clamping movable piece (300) comprises a pulling part (350) for external force application.

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